WO2005008005A1

WO2005008005A1 - Latch with switch

Info

Publication number: WO2005008005A1
Application number: PCT/JP2004/010862
Authority: WO
Inventors: Takahide Ichimaru
Original assignee: Nifco Inc.
Priority date: 2003-07-23
Filing date: 2004-07-22
Publication date: 2005-01-27
Also published as: TWI264496B; JP2005042428A; TW200504274A; KR20050011666A

Abstract

A latch (L) with a switch, wherein a movable member (41) energized by a coiled spring (61) and projected from a housing (11) is pressed into the housing to lock the movable member and turn off the switch, and the movable member at the pressed position is further pressed into the housing to bring a lock mechanism into an unlocked state and the movable member is returned to the projected position to turn off the switch. The switch is formed of a pin (81) fixed to the movable member and a pair of fixed terminals (31) fixed in the housing.

Description

Description Latch with switch Technical field

The present invention relates to a switch provided with a switch provided on a latch attached to an attached member such as a main body in order to push and close an openable member such as a door of a radio cassette and to open the closed openable member again. It is about latch. Background art

The conventional switch-equipped latch pushes the movable member, which is urged by the urging member to the projecting position where the part protrudes from the housing, by pushing the movable member into the housing with the urging force of the urging member. ■ The push-type lock mechanism locks the movable member in the pushed position and locks the movable member at the pushing position, and the switch is turned on. The movable member at the pushed position is pushed by the biasing force of the biasing member and pushed into the housing. When the lock mechanism is unlocked, the movable member is returned to the protruding position by the urging force of the urging member, and the switch is turned off. (For example, Japanese Utility Model Laid-Open Publication No. 7-14062 (Paragraph [0 0 7] to Paragraph [0 0 2 0], Figs. 6 to 9 #, ½ο))

The switch in the above-described conventional switch-equipped latch includes a fixed terminal fixed to the housing and a brush-shaped elastic movable terminal which comes into contact with and separates from the fixed terminal and slides on the fixed terminal. It is configured.

These movable terminals are manufactured by cutting and bending metal sheets. In mass production, complicated cutting and bending processes are performed using expensive press dies depending on the shape, so the movable terminals to be manufactured are expensive, and the latches with switches are accordingly expensive.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described disadvantages, and an object of the present invention is to provide an inexpensive and highly reliable latch with a switch by manufacturing a movable terminal at a low cost. . Disclosure of the invention

The present invention provides a push-push type lock by pushing a movable member, which is urged by a biasing member to a projecting position at which a part thereof projects from the housing, into the housing against the biasing force of the biasing member. The mechanism is locked and the movable member is locked in the pushed position, the switch is turned on or off, and the movable member at the pushed position is pushed into the housing by being pushed by the biasing force of the biasing member and into the housing. When the mechanism is unlocked and the movable member is returned to the projecting position by the urging force of the urging member, the switch is attached to the movable member in the switch with the switch turned off or on, and the two sides of the movable member A movable terminal consisting of pins whose both ends protrude from the housing, and both movable terminals fixed in the housing when the movable member is in the protruding position. When the end is not in contact, it is in a non-conducting state or in contact and in a conducting state. And a pair of fixed terminals.

Then, the two sides of the movable member are made to be two opposite sides, the movable terminal is rotatable with respect to the movable member, the cross-sectional shape of the movable terminal is made circular, and the movable terminal is fixed to a pair of fixed members. It is desirable that the terminal side of the housing bend outwardly and be assembled into the cutout of the fixed terminal from the opening side of the housing. When the movable terminals are to be bent outward from the opening of the housing of the pair of fixed terminals so that the movable terminals can be incorporated into the cutouts of the fixed terminals from the opening of the housing, the movable terminals must be inside the opening of the housing. It is preferable to provide a concave portion 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 comprising a pin having both ends protruding from two side surfaces of the movable member, and the switch is fixed in the housing, and the movable terminal is provided when the movable member is in the protruding position. When the movable member is in the pushed-in position, both ends of the movable terminal are in contact with each other and become conductive or non-contact. The movable terminal is always urged by the urging member in the direction that it protrudes from the housing because it is composed of a pair of fixed terminals that are in a conductive state, and contacts the fixed terminal in this urged state. No contact with terminal Good strength <It is hard to generate, and the reliability of the switch can be secured.

As described above, in the switch of the present invention, since the movable terminal is constituted by a round bar-shaped pin, cutting and bending are not required, and since a mold is not required, the switch is very inexpensive and therefore manufactured. Switched latches are also inexpensive.

The two sides of the movable member are opposite to each other, and the movable terminal is rotatable with respect to the movable member, so that the portion of the movable terminal that contacts the pair of fixed terminals changes, thereby improving the reliability of the switch. 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 secured.

Furthermore, the movable terminals can be assembled into the cutouts of the fixed terminal from the opening side of the housing by bending the portion of the pair of fixed terminals on the opening side of the housing outward, so that the assembly can be easily performed. .

When the movable terminal is to be bent into the notch of the fixed terminal from the opening of the housing by bending the side of the opening of the housing of the pair of fixed terminals outward, the movable terminal is provided inside the opening of the housing. In addition, since a concave portion is provided that allows the pair of fixed terminals to bend outward on the opening side of the housing, the movable terminal can be incorporated without deforming the housing. Brief Description of Drawings

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

FIG. 3 is a plan view of the housing shown in FIG.

FIG. 4 is a front view of the housing shown in FIG.

FIG. 5 is a right side view of the housing shown in FIG.

FIG. 6 is a left side view of the housing shown in FIG.

FIG. 7 is a cross-sectional view taken along line AA of FIG.

FIG. 8 is a cross-sectional view taken along line BB of FIG.

FIG. 9 is a plan view of the movable member shown in FIG.

FIG. 10 is a front view of the movable member shown in FIG. FIG. 11 is a right side view of the movable member shown in FIG.

FIG. 12 is a left side view of the movable member shown in FIG.

FIG. 13 is a bottom view of the movable member shown in FIG.

FIG. 14 is a cross-sectional view taken along line CC of FIG.

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

FIG. 16 is an explanatory view corresponding to a front sectional view showing a state where a fixed terminal is mounted in a housing of a latch with a switch according to a first embodiment of the present invention.

FIG. 17 is an explanatory view corresponding to a front sectional view showing an assembled state of the switch-equipped latch according to the first embodiment of the present invention.

FIG. 18 is an explanatory view corresponding to a plan sectional view showing an assembled state of the switch-equipped latch according to the first embodiment of the present invention.

FIG. 19 is a diagram for explaining the operation of the switch-equipped latch according to the first embodiment of the present invention.

FIG. 20 is an explanatory diagram of the operation of the switch-equipped latch according to the first embodiment of the present invention.

FIG. 21 is an explanatory diagram of the operation of the switch-equipped latch according to the first embodiment of the present invention.

FIG. 22 is an explanatory diagram of the operation of the switch-equipped latch according to the first embodiment of the present invention.

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

FIG. 25 is a plan view of the housing shown in FIG. 24.

FIG. 26 is a front view of the housing shown in FIG.

FIG. 27 is a right side view of the housing shown in FIG.

FIG. 28 is a left side view of the housing shown in FIG.

FIG. 29 is a cross-sectional view taken along line DD of FIG.

FIG. 30 is a sectional view taken along line EE of FIG. 27.

FIG. 31 is a plan view of the movable member shown in FIG.

FIG. 32 is a front view of the movable member shown in FIG. FIG. 33 is a right side view of the movable member shown in FIG.

FIG. 34 is a left side view of the movable member shown in FIG.

FIG. 35 is a bottom view of the movable member shown in FIG.

FIG. 36 is a sectional view taken along line FF of FIG.

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

FIG. 38 is an explanatory view corresponding to a front sectional view showing a state where a fixed terminal is mounted in a housing of a switch-equipped latch according to a second embodiment of the present invention.

FIG. 39 is an explanatory view corresponding to a front sectional view showing an assembled state of the switch-equipped latch according to the second embodiment of the present invention.

FIG. 40 is an explanatory view corresponding to a plan sectional view showing an assembled state of the switch-equipped latch according to the second embodiment of the present invention.

FIG. 41 is a diagram for explaining the operation of the switch-equipped latch according to the second embodiment of the present invention.

FIG. 42 is an explanatory view of the operation of the switch-equipped latch according to the second embodiment of the present invention.

FIG. 43 is an explanatory view of the operation of the switch-equipped latch according to the second embodiment of the present invention.

FIG. 44 is a diagram for explaining the operation of the switch-equipped latch according to the second embodiment of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION

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

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

In these figures, L indicates a switch-equipped latch, a box-shaped housing 11 with one side open, a pair of fixed terminals 31 fixed in the housing 11, and a housing 11 inserted into the housing 11. The movable member 41 is loaded between the movable member 41 and the housing 11 to urge the movable member 41 in a direction to protrude from the housing 11. A coil spring 61 as an urging member, a guide lever 71 attached to the housing 11 and a movable member 41 attached to the movable member 41 to prevent the movable member 41 from coming out of the housing 11 And a pin 81 as a movable terminal having a circular cross section, which comes into contact with and separates from the fixed terminal 31.

FIG. 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, FIG. Is a left side view of the housing shown in FIG. 2, FIG. 7 is a sectional view taken along line AA of FIG. 5, and FIG. 8 is a sectional view taken along line BB of FIG.

In the following description, up, down, left, right, front and rear are those in the front view of each member.

In these figures, the housing 11 made of synthetic resin has a front wall 12 f, a rear wall 12 b, and a ceiling wall 12 so that one end (right side: right side wall) is an opening. u, bottom wall 1 2 d, left side wall 1 2 I, and a box 1 2, which is connected to the right side of the box 1 2, protrudes up and down the box 1 2, and is located in front of and behind the box 1 2 It is made up of a wide rectangular frame 24 viewed from the right side.

Then, the box portion 12 extends from the left side wall 12 I side to one end (frame portion 24) side near the frame portion 24 side of the front wall 12 f and the back wall 12 b, and the frame portion 2 An elastic holding piece 13 for holding the member to be mounted is provided between the left side wall 12 and the inner side of the front wall 12 f, and one end from the left side wall 12 I (frame part 24). The first and second cam ridges 14 A and 14 B are provided to extend horizontally to the side at a distance that allows the flat plate portion 50 of the movable member 41 to be sandwiched and move, and the ceiling wall 12 u and At the rear wall 1 2b side of the bottom wall 1 2d, a locking piece 16 extending from one end (frame part 24) side to the left side wall 12 I side is provided near the left side wall 12 I side. Have been.

The inside of each locking piece 16 is inclined from one end (frame part 24) side to the left side wall 12 I side.

There is provided a locking projection 16a slightly projecting into the box portion 12 and engaging with the engagement hole 33a of the fixed terminal 31.

In addition, the box 1 2 has an inner surface extending from the inner surface connected to the left side wall 1 2 I of the ceiling wall 1 2 u to an upper end of the upper right side of the frame 24 and a left side wall 1 2 I of the bottom wall 1 2 d. Inside Guide the fixed terminal 31 on the extension of the locking piece 16 from the end of the surface to the lower end of the lower right side surface of the frame 24 so that the fixed terminal 3 1 does not rattle. Terminal guide grooves 17 are provided facing each other, and the left side wall 1 2 I is near the ceiling wall 1 2 u and the bottom wall 1 2 d on the inner surface of the inner surface of the I side. 3 Insertion holes 18 connected to the terminal guide grooves 17 are provided, respectively, so that the connection portions 3 2 of 1 can be inserted without looseness. 2 Locking pieces 1 on the inner surface of the left side wall 1 2 I In the middle of 6, a spring receiver 19 for positioning the coil spring 61 is provided on one end (frame part 24) side in parallel with the ceiling wall 12u and the bottom wall 12d.

The right side of the frame portion 24 of each terminal guide groove 17 is engaged with the engaging recess 3 4 a of the fixed terminal 31 to prevent the right end portion of each fixed terminal 31 from moving. Engaging portions 17a are provided.

Then, inside the terminal guide groove 17 inside the opening side of the housing 11, the fixed terminal 3 1, the opening side portion of the housing 11 is bent outward, and the pin 8 1 passes through the recess 1. 7 b is provided for each.

Further, the box portion 12 is provided with a guide lever mounting portion 20 for mounting the guide hopper 71.

The guide lever mounting portion 20 communicates with an insertion hole 21 provided in the left side wall 12I for inserting the guide lever 71, and the first and second cam protrusions. Concave portion 2 2 A that is provided on the left side wall 1 2 I side of Articles 14 A and 14 B and is located far from the front wall 12 f and that pivotally positions the shaft 7 2 of the guide lever 7 1 , 22 B and an elastic pressing piece 23 for rotatably pressing the shaft 72 of the guide lever 71 into the recesses 22 A, 22 B.

In FIG. 2, reference numeral 31 denotes a fixed terminal formed by pressing a conductive metal flat plate, and a connecting portion 32 partially projecting from the inside of the housing 11 to the outside of the housing 11; A flat plate portion 3 3 that extends to the right side in the same plane as a rectangle protruding to both sides of the connecting portion 3 2 and is located in the terminal guide groove 17 of the housing 11, and is bent to the right by being bent by the flat plate portion 3 3 The housing 11 includes an engaging portion 34 located at a terminal guide groove 17 located at the opening side portion of the housing 11. The connecting portion 32 is provided with a through hole 32 a for passing through and connecting the conductive wire. The flat plate portion 33 has a rectangular engaging hole 33 a serving as an engaging portion having a locking function by which a locking projection 16 a of the housing 11 is engaged with an edge of the housing 11, and a pin 8. A terminal hole 33 b is provided as a cutout portion where 1 is in contact with and separated from the edge, and an engagement concave portion 34 a with which the engagement portion 17 a engages is provided in the engagement portion 34. ing.

The terminal hole 33b has a shape in which isosceles triangles whose tops are rounded to the right of a horizontally long rectangle are connected.

Then, the length of the right side of the rectangle of the 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, and FIG. 11 is a right side view of the movable member shown in FIG. Fig. 12, Fig. 12 is a left side view of the movable member shown in Fig. 2, Fig. 13 is a bottom view of the movable member shown in Fig. 2, and 14 is a line C-C in Fig. 12. It is sectional drawing.

In these figures, reference numeral 41 denotes a movable member formed of a synthetic resin, and a main body 42 inserted into the housing 11 and a hinge portion at the right end of the front of the main body 42 and the right end of the back surface. The striking member S is provided so as to be opposed to each other with the interposition of a striking member 5, and is constituted by two holding pieces 54 that hold a striker S described later and that release the striking force S that is held. The main body 42 described above is located at the right end, and has a rectangular front wall portion 43 viewed from the right side in which two holding pieces 54 are continuously provided, and a front upper portion of the left side surface of the front wall portion 43. The guide projection 4 4, which is lower than the upper end of the front wall 43, and has a left corner on the back side cut linearly and formed as an inclined surface (cam surface). In the left back side half, a square pillar part 45 connected to the left side with a step between the top and bottom of the front wall part 43 and the square part 45 in the left front half of the front wall part 43 It is located in the middle in the height direction, and is composed of a flat plate portion 50 horizontally connected to the left side of the front wall portion 43 and the square pillar portion 45.

The square pole portion 45 has a circular hole 46 on the left side for accommodating a coil spring 61 extending to the right side, and a right and left end portion facing the terminal guide groove 17 penetrates vertically. 8 is rotatably passed through, for example, is provided with a through hole 48 having a circular cross section, and a guide extending to the same height as the upper end of the front wall 43 at the upper and lower left ends, in the corners closer to the back side. Protrusions 49 are provided continuously.

Next, the flat plate portion 50 has a first heart cam having a first cam recess 51 a on the upper surface. 5 and a first cam projection 52 for guiding the first trace portion 73a of the guide lever 71 are connected to each other, and a second heart cam 53 having a second cam recess 53a on the lower surface. 《It is connected.

The first protrusion 14 A, the second cam protrusion 14 B, 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 When the distance between the first trace part 73a and the second trace part 74a changes, a twist or a bending force is generated in the shaft part 72 of the guide lever 71, and the twist or the bending is generated. The first trace portion 73a or the second trace portion 74a is formed to generate a restoring force in the circulation direction by the force.

The locking mechanism is composed of the first cam ridge 14A, the second cam ridge 14B, the inclined surface (cam surface) of the guide projection 44, the first heart cam 51, and the first cam projection 52. , The second heart cam 53 and the coil spring 61) and the guide lever 71.

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 first and second arm portions 73, 74 are arranged substantially horizontally and substantially parallel above and below a vertically extending shaft portion 72. The metal rod is bent in a U-shape as viewed from the front, so that the open end portions of the first and second arm portions 73, 74 are inwardly spaced from each other so that they can pass through the flat plate portion 50 of the movable member 41. The first and second trace portions 73a and 74a are bent.

In FIG. 2, reference numeral 81 denotes a pin as a movable terminal, which is a metal rod having a circular cross section and having a conductive plating, and having a length of the bottom of a parallel terminal guide groove 17. Is slightly shorter than the interval.

FIG. 16 is an explanatory view corresponding to a front sectional view showing a state where a fixed terminal is mounted in a housing of a switch-equipped latch according to a first embodiment of the present invention, and FIG. 17 is a first view of the present invention. FIG. 18 is an explanatory view corresponding to a front sectional view showing the assembled state of the switch-equipped latch according to the embodiment, and FIG. 18 is a plan sectional view showing the assembled state of the switch-equipped latch according to the first embodiment of the present invention. FIGS. 19 to 22 are explanatory views of the operation of the switch-equipped latch according to the first embodiment of the present invention.

In FIGS. 20 and 21, S denotes a switch provided on an opening / closing member such as a door. Shows try ability.

Next, an example of assembling the switch-equipped latch will be described.

First, 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 left side of the connecting portion 32 and the flat plate portion 33 is raised on the locking piece 16 and presses the locking projection 16a, so that the locking piece 16 radially outwards, and the connecting portion 3 2 It can be inserted into the inlet 18.

When the left end of the flat plate portion 33 comes into contact with the inner surface of the left side wall 12 I, most of the connecting portion 32 projects from the housing 11 to the left as shown in FIG. 6 returns to its original state due to its own elasticity, and the locking projections 16a protrude into the engagement holes 33a of the flat plate portion 33 and engage with the edges of the engagement holes 33a. .

At this time, as shown in FIG. 16, the engaging portion 34 fits into the right end of the terminal guide groove 17 and the engaging portion 17a engages with the engaging concave portion 34a. The fixed terminal 31 is prevented from moving into the terminal guide groove 17 and is fixed so as not to fall out of the housing 11.

When a pair (two) of the fixed terminals 31 is fixed in the housing "I1" in this way, the fixed terminals 31 are fixed in a state of facing vertically and in parallel.

Next, one end of the coil spring 61 is inserted into the circular hole 46 of the movable member 41, and the pin 81 is inserted into the through hole 48. The movable member 41 is moved from the guide protrusion 49 side to the housing with the both ends of the pin 81 corresponding to the terminal holes 3 3 b of the pair of fixed terminals 31 while corresponding to the spring receiver 19 of the housing 11. When inserted into 1 1, the spring support 19 enters the coil spring 61 as shown in Fig. 17, and the coil spring 61 guides the force << The opening portion of the housing 11 of the terminal 3 1 is pushed at both ends of the pin 8 1 and bent outward, and retreats into the recess 17 b, so that the pin 8 1 passes between the fixed terminals 3 1. be able to.

When the right end of the pin 81 reaches the terminal hole 3 3b, each fixed terminal 31 returns to its original state by its own elasticity, so that both ends of the pin 81 enter the terminal hole 33 b. It enters and faces the right end, the rounded top of an isosceles triangle. When the movable member 41 is inserted into the housing 11 in this manner, the flat plate portion 50 becomes, as shown in FIG. 18, a first cam ridge 14A and a second cam ridge 14B. And is supported up and down.

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 thus, as shown in FIG. As shown in FIG. 18 and FIG. 18, both ends of the pin 81 abut against the edge of the terminal hole 33 b to move to a position (protruding position) at which the movable member 41 cannot come out of the housing 11, and Is turned on (conducting) as shown in FIGS. 18 and 19.

Next, the first and second trace portions 73 a and 74 a sides of the guide lever 71 are directed toward the left side wall 12 I side of the housing 11 and the flat plate portion 50 of the movable member 41 is clamped. With the first trace portion 73a facing upward and the second trace portion 74a facing downward, the housing 11 is moved from the first and second trace portions 73a, 74a. When the shaft part 72 is pushed into the insertion hole 21, the shaft part 72 expands the elastic pressing piece 23, so that the shaft part 72 can be inserted into the concave parts 22 A and 22 B.

When the shaft portion 72 is inserted into the concave portions 22A and 22B, the elastic pressing piece 23 returns to its original state by its own elasticity as shown in FIG. The shaft 72 between 22 A and the recess 2 2 B is pressed toward the first and second cam ridges 14 A and 14 B, so that the guide lever 71 is attached so that it does not come off. As a result, the guide lever 71 is rotatable in the recesses 22A and 22B, and the assembly is completed.

Next, an example of attachment of the switch-equipped latch to the housing will be described.

First, the left side wall 12 I side of the box portion 12 is made to correspond to a member to be mounted, for example, a mounting hole of a bracket provided in a main body so as to correspond to a rotating end of a door of a radio cassette, and a latch L with a switch is attached. When inserted into the mounting hole from the left side wall 1 2 I side and pushed in, each elastic holding piece 13 is pressed by the edge of the mounting hole and bends inward, so the box part 1 2 is pushed into the mounting hole be able to.

When the frame portion 24 comes into contact with one surface of the bracket, each elastic holding piece 13 projects to the back side of the bracket and returns to its original state by its own elasticity, so that each elastic holding piece 13 comes into contact with the bracket. Engage with the periphery of the mounting hole on the back side of the rack. Accordingly, the switch-equipped latch L is attached to the bracket with the bracket held between the elastic holding pieces 13 and the frame portion 24.

Next, the operation of the switch-equipped latch will be described.

First, in a state where the latch with the switch is assembled as shown in FIGS. 17 and 18, that is, in a state where the movable member 41 is located at the projecting position, as shown in FIG. When both ends of the pin 81 via the movable member 41 biased by the biasing force of the spring 61 contact the respective fixed terminals 31, the switch is turned on.

In this state, when the front wall portion 43 of the movable member 41 is pushed by the strike force S and the movable member 41 is pushed into the housing 11 against the urging force of the coil spring 61, each holding piece When the frame 54 is pressed by the frame portion 24 and bent inward at the hinge portion 55, each of the holding pieces 54 holds the striker S so as not to come out as shown in FIG.

Then, when the movable member 41 is pushed into the housing 11, the trace portions 73 a and 74 a of the guide lever 71 move the lower sides of the heart cams 51 and 53 in FIG. 18. The movable member 41 is swung so as to trace, and the movable member 41 is pushed to the deepest portion of the housing 11 as shown in FIG.

In this state, when the force for pushing 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 to protrude from the housing 11.

Therefore, the second trace portion 74a is the restoring force induced by the cam surface at the tip of the second heart cam 53, and as shown in FIG. 21, the trace portions 73a and 74a correspond to each other. The locking mechanism is locked by engaging the cam concave portions 51a and 53a to face each other to lock the movable member 41 at 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 81 do not come into contact with the fixed terminal 31. Move in the terminal hole 33b.

Therefore, as shown in FIGS. 21 and 22, when the movable member 41 is located at the pushed-in position, both ends of the pin 81 are not in contact with the respective fixed terminals 31. The switch turns off.

With the lock mechanism locked, the movable member 41 is pushed again into the housing 11 via the striker S against the urging force of the coil spring 6 1, and each of the trace portions 7 3 a, 7 4 a is guided by the inclined surface (cam surface) of the guide projection 44, as shown by a two-dot chain line in FIG. 20, and the lock mechanism is unlocked.

Therefore, when the force for pushing the movable member 41 into the housing 11 via the striker S is released in the unlocked state of the lock mechanism, the direction in which the movable member 41 protrudes from the housing 11 by the coil spring 61 is released. The movable member 41 is returned to the protruding position shown in FIGS. 17, 18 and 19.

When the movable member 41 returns to the projecting position, as shown in FIGS. 18 and 19, both ends of the pin 81 are moved through the movable member 41 biased by the coil spring 61. The switch is turned on by contacting each fixed terminal 31.

As described above, according to the first embodiment of the present invention, the switch is attached to the movable member 41, and the pins 81, both ends of which protrude from two opposing side surfaces of the movable member 41, and the housing 111. When the movable member 41 is in the protruding position, both ends of the pin 81 are in contact with each other to be in a conductive state, and when the movable member 41 is in the pushed-in position, both ends of the pin 81 are in non-contact. The pin 81 is always urged by the coil spring 61 in the direction in which it protrudes from the housing 11, and the fixed terminal 3 is urged in this urged state. Since contact is made with 1, the contact failure between the pin 81 and the fixed terminal 31 is unlikely to occur, and the reliability of the switch can be secured.

And since the pin 81 is made rotatable with respect to the movable member 41, the reliability of the switch can be secured by changing the portion of the pin 81 that comes into contact with the pair of fixed terminals 31.

Further, since the cross-sectional shape of the pin 81 is circular, the state of contact between the fixed terminal 31 and the pin 81 can be stabilized, and the reliability of the switch can be secured.

Further, a recess 17 b is provided inside the opening side of the housing 11 so that the opening side portion of the housing 11 of the pair of fixed terminals 31 can be bent outward. The pins 81 can be incorporated without deformation. FIG. 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 figures, L indicates a switch-equipped latch, a box-shaped housing 11 A having one side open, a pair of fixed terminals 31 A fixed in the housing 11 A, and a housing 11 A A movable member 41A inserted into the inside, and a bias that is loaded between the movable member 41A and the housing 11A and urges the movable member 41A in a direction protruding from the housing 11A. A coil spring 61 as a member, a guide lever 71 attached to the housing 11A, a movable member 41A attached to and separated from the fixed terminal 31A. It is composed of pins 81 as movable terminals.

Figure 25 is a plan view of the housing shown in Figure 24, Figure 26 is a front view of the housing shown in Figure 24, and Figure 27 is a right side view of the housing shown in Figure 24 Fig. 28 is a left side view of the housing shown in Fig. 24, Fig. 29 is a sectional view taken along line D-D of Fig. 27, and Fig. 30 is E- It is sectional drawing by E line.

In these figures, a housing 11A made of synthetic resin has a front wall 12f, a rear wall 12b, and a ceiling wall 12u such that one end (right side: right side wall) is an opening. , A bottom wall 1 2d, a left side wall 1 2I, and a box 1 2 that is connected to the side of the box 1 2 and protrudes up and down the box 1 2 It is made up of a wide rectangular frame 24 viewed from the right side.

Then, the box portion 12 extends from the left side wall 12 I side to one end (frame portion 24) side toward the frame portion 24 side of the front wall 12 f and the rear wall 12 b, and the frame portion 2 An elastic holding piece 13 for holding the member to be mounted is provided between the left side wall 1 2I and the inner side of the front wall 12 f, and one end from the left side wall 1 2 I (frame part 2 4). The first and second cam ridges 14 A and 14 B are provided horizontally and horizontally, and the first and second cam ridges 14 A and 14 B are provided so as to extend parallel to each other with an interval at which the flat portion 50 of the movable member 41 A can be sandwiched therebetween. A rectangular guide slot 15 extending from the left side wall 12 I side to the frame 24 is provided near one end (frame 24) near the front wall 12 f side of the ceiling wall 1 2 u A locking piece 16 extending from one end (frame part 24) side to the left side wall 12 I side is provided near the left side wall 12 I side near the back wall 1 2 b side of the bottom wall 1 2 d. Have been. Note that a guide groove 15a is provided inside the ceiling of the frame portion 24 so as to be continuous with the guide boss L15 and reach the right end of the frame portion 24.

The inside of each locking piece 16 projects slightly into the box part 12 while being inclined from one end (frame part 24) side to the left side wall 12 I side, and the engaging terminal of the fixed terminal 31 A A locking projection 16a that engages with the hole 33c is provided.

In addition, the box 1 2 has an inner surface extending from the inner surface connected to the left side wall 1 2 1 of the ceiling wall 1 2 u to an upper end of the upper right side of the frame portion 24 and a left side wall 1 2 I of the bottom wall 1 2 d. Guide the fixed terminal 31A so that it does not rattle on the extension of the locking piece 16 extending from the end of the continuous inner surface to the lower end of the lower right side of the frame 24.The thickness of the fixed terminal 31A The terminal guide grooves 17 with a depth of 17 mm are provided opposite each other, and the left side wall 1 2 I is closer to the ceiling wall 1 2 u and the bottom wall 1 2 d on the inner surface of the left side wall 1 2 I. In addition, there are provided insertion holes 18 connected to the terminal guide grooves 17 so that the connection portions 3 2 of the fixed terminals 3 1 A can be inserted without rattling, and the inner surfaces of the left side wall 1 2 I are provided. A spring receiver 19 for positioning the coil spring 6 1 is provided in the middle of the two locking pieces 16 to the end (frame part 24) side in parallel with the ceiling wall 1 2 u and the bottom wall 1 2 d. I have.

The right end of each fixed terminal 31A moves in the right side of the frame 24 of each terminal guide groove 17 by engaging with the engagement recess 34a of the fixed terminal 31A. Engagement portions 17a for preventing the air flow are provided.

Then, inside the terminal guide groove 17, inside the housing 11 A opening side, the fixed terminal 31 A housing 11 A opening side portion is bent outward to allow the pins 81 to pass. One b is provided for each.

Further, the box part 12 is provided with a guide lever mounting part 20 for mounting the guide lever 71.

The guide lever mounting portion 20 communicates with the insertion hole 21 provided in the left side wall 1 21 for inserting the guide lever 71, and the first and second cams. A recess 2 2 that is provided on the left side wall 12 I side of the ridges 14 A and 14 B and is located far from the front wall 12 f and that pivotally positions the shaft portion 72 of the guide lever 7 1 A, 22B, and elastic pressing pieces 23 for rotatably pressing the shaft 72 of the guide lever 71 into the recesses 22A, 22B. In FIG. 24, reference numeral 31 A denotes a fixed terminal formed by pressing a conductive metal flat plate, and a connection portion partially protruding from the inside of the housing 11 A to the outside of the housing 11 A. 3 2 A and a flat plate portion 3 3 A, which extends to the right side in the same plane as a rectangle protruding to both sides of the connecting portion 3 2 and is located in the terminal guide groove 17 of the housing 11 A, and a flat plate portion 3 The housing 11A is bent to 3A and connected to the right side, and the engaging portion 34 is located at the terminal guide groove 17 located at the opening side portion of the housing 11A.

The connecting portion 32 is provided with a through hole 32 a for passing through and connecting a conducting wire, and the flat plate portion 33 A is provided with a locking projection 16 a of the housing 11 A on an edge thereof. An engaging terminal hole 33c is provided as a notch for engaging and disengaging the pin 81, as well as having an engaging and stopping function, and an engaging portion 17a is formed in the engaging portion 34. An engaging recess 34a to be engaged is provided.

The engagement terminal hole 33c is a horizontally long rectangular hole.

Then, the flat plate portion 33A is pressed so that the elastic contact portions 33d, which come into contact with and separate from the passing pins 81, face the front and rear and project into the engagement terminal holes 33c. Therefore, the flat portion 33A is provided on the same plane as the flat portion.

FIG. 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, and FIG. 33 is a movable member shown in FIG. 24. 34 is a left side view of the movable member shown in FIG. 24, FIG. 35 is a bottom view of the movable member shown in FIG. 24, and FIG. It is sectional drawing by the FF line of the figure.

In these figures, reference numeral 41A denotes a movable member molded of synthetic resin, and a housing 42 inserted into the housing 11A, and hinge portions at the right end of the front and back of the main body 42. It is composed of two holding pieces 54, which are connected to each other via 55, and hold the striker S, and release the holding force S.

The main body 42 described above is located at the right end, and has a rectangular front wall portion 43 viewed from the right side in which two holding pieces 54 are continuously provided, and a front upper portion of the left side surface of the front wall portion 43. The upper surface is an inclined surface that descends to the left in correspondence with the guide slot 15 and the guide groove 15a of the housing 11A, and the left corner on the back side is linearly notched. The guide locking projection 4 4 A, which is slightly higher than the upper end of the front wall portion 43, which is formed as an inclined surface (cam surface), A square pillar part 45 connected to the left side with a step on the left back side half of the front wall part 43 at the top and bottom of the front wall part 43 and a left front half of the front wall part 43, A flat plate portion 50 is provided in the middle of the prism portion 45 in the height direction, and is horizontally connected to the left side of the front wall portion 43 and the square pillar portion 45.

The square pole portion 45 has a circular hole 46 on the left side for accommodating a coil spring 61 extending to the right side, and a right and left end portion facing the terminal guide groove 17 penetrates vertically. 8 1 is rotatably inserted, for example, is provided with a through hole 4 8 having a circular cross section, and a guide extending to the same height as the height of the front wall portion 43 at the upper and lower left ends, at the corners closer to the back side. Protrusions 49 are provided continuously.

Next, the flat plate portion 50 has a first heart cam 51 having a first cam recess 51 a on the upper surface, and a first cam protrusion 5 for guiding the first trace portion 73 a of the guide lever 71. 2 and a second heart cam 53 having a second cam recess 53 a on the lower surface.

The first cam ridge 14A, the second cam ridge 14B, the inclined surface (cam surface) of the guide locking projection 44A, the first heart cam 51, the first cam protrusion 52, the first 2 When the distance between the first trace portion 73a and the second trace portion 74a changes, the heart cam 53 generates a torsion or bending force on the shaft portion 72 of the guide lever 71, and this torsion Alternatively, it is formed so as to generate a multiple force in the circulation direction in the first trace portion 73a or the second trace portion 74a by bending force.

The locking mechanism includes the first cam ridge 14A, the second cam ridge 14B, the inclined surface (cam surface) of the guide locking projection 44A, the first heart cam 51, and the first cam. It comprises a projection 52, a second heart cam 53, a coil spring 61) and a guide lever 71.

FIG. 37 is a plan view of the guide repeller shown in FIG. 24.

In FIG. 24 or FIG. 37, reference numeral 71 denotes a guide lever, and first and second arm portions 73, 74 are vertically and substantially parallelly arranged above and below a shaft portion 72, respectively. The metal rods are bent in a U-shape as viewed from the front so that the open ends of the first and second arm portions 73 and 74 are respectively inwardly moved to the inside of the flat plate portion 50 of the movable member 41A. The first and second trace portions 73a and 74a were bent at intervals so that they could be inserted. In FIG. 24, reference numeral 81 denotes a pin as a movable terminal, which is a metal rod having a circular cross section and provided with conductive plating, and having a parallel terminal guide groove.

It is slightly shorter than the bottom spacing of 17.

FIG. 38 is an explanatory view corresponding to a front sectional view showing a state where a fixed terminal is mounted in a housing of a switch-equipped latch according to a second embodiment of the present invention, and FIG. 39 is a second embodiment of the present invention. FIG. 40 is an explanatory view corresponding to a front sectional view showing an assembled state of a latch with a switch according to an embodiment, and FIG. 40 is a plan sectional view showing an assembled state of a latch with a switch according to a second embodiment of the present invention. FIG. 41 to FIG. 44 are explanatory diagrams of the operation of the switch-equipped latch according to the second embodiment of the present invention.

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

Next, an example of assembling the switch-equipped latch will be described.

First, 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 connection portion 32 side. When it is inserted, the left side of the connecting portion 32 and the flat plate portion 33A rides on the locking piece 16 and presses the locking protrusion 16a, so that the locking piece 16 radiates outward, and the connecting portion 3 2 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 12I, most of the connecting portion 32 projects leftward from the housing 11A as shown in FIG. The piece 16 returns to its original state due to its own elasticity, and the locking projection 16a protrudes into the engaging terminal hole 33c of the flat plate part 33a, and the edge of the engaging terminal hole 33c. Engage.

At this time, as shown in FIG. 38, the engaging portion 34 fits into the end of the terminal guide groove 17 and the engaging portion 17a engages with the engaging concave portion 34a. The fixed terminal 31A is prevented from moving into the terminal guide groove 17 and is fixed so as not to fall out into the housing 11A.

When a pair (two) of the fixed terminals 31 A is fixed in the housing 11 A in this manner, the fixed terminals 31 A are fixed in a state of facing vertically and in parallel.

Next, one end of the coil spring 61 is inserted into the circular hole 46 of the movable member 41A, and the pin 81 is inserted into the through hole 48. The ends correspond to the spring receivers 19 of the housing 11A, and the movable members 41A guide locking projections 44A correspond to the housing 11A guide slots 15 and guide grooves 15a. The movable member 41A is inserted into the housing 11A from the guide projection 49 side, with both ends of the pin 81 corresponding to the engagement terminal holes 33c of the pair of fixed terminals 31A. Then, as shown in FIG. 39, the spring receiver 19 enters the coil spring 61, guides the coil spring 61 so as not to buckle when it expands and contracts, and the housing of each fixed terminal 31A. The opening portion of 11A is pushed at both ends of the pin 81 and bent outward, and retracts into the recess 17b, so that the pin 81 can pass between the fixed terminals 31A. The guide locking projection 44A can be pushed into the housing 11A by pushing up the frame 24 with the slope. .

When the right end of the guide locking projection 44A crosses the frame portion 24 and faces the guide elongated hole 15, the frame portion 24 returns to its original state due to its own elasticity. 44 A faces the right edge of the guide slot 15 (the left end of the frame portion 24).

When the right end of the pin 81 reaches the engagement terminal hole 33c, each fixed terminal 31A returns to its original state due to its own elasticity, so that both ends of the pin 81 are engaged with the engagement terminal. It enters hole 3 3 c and faces the right end.

When the movable member 41A is inserted into the housing 11A in this manner, the flat plate portion 50 becomes a first cam protrusion 14A and a second cam protrusion 14B as shown in FIG. Enter between and is supported up and down.

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. However, the guide locking projection 44A abuts on the right edge of the guide slot 15 (the left end of the frame 24) so that the movable member 41A does not come out of the housing 11A (projection Position).

In the state where the movable member 41A is located at the protruding position, as shown in FIGS. 40 and 41, both ends of the pin 81 are not in contact with the flat plate portion 33A and the contact portion 33d. The switch is in the off (non-conducting) state because it is in the tactile state.

Next, the first and second trace portions 73 a and 74 a of the guide lever 71 are directed toward the left side wall 12 I of the housing 11 A, and the flat plate portion 50 of the movable member 41 A is moved. I will pinch With the first trace part 73a facing upward and the second trace part 74a facing downward, the housing 11A from the first and second trace parts 73a, 74a side When the shaft portion 72 is pushed into the insertion hole 21, the shaft portion 72 can be inserted into the concave portions 22 A and 22 B by pushing and expanding the elastic force piece 23.

When the shaft portion 72 is inserted into the concave portions 22A and 22B, the elastic pressing piece 23 returns to its original state by its own elasticity as shown in FIG. The shaft 72 between 22 A and the recess 2 2 B is pressed toward the first and second cam ridges 14 A and 14 B, so that the guide lever 71 is attached so that it does not come off. As a result, the guide lever 71 can rotate within the recesses 22A and 22B, and the assembly is completed.

The mounting of the switch-equipped latch L of the second embodiment is the same as that of the switch-equipped latch of the first embodiment, and a description thereof will be omitted.

Next, the operation of the switch-equipped latch will be described.

First, in the assembled state as shown in FIGS. 39 and 40, that is, in a state where the movable member 41A is located at the protruding position, as shown in FIG. Since both ends of the pin 81 via the movable member 41 A urged by the urging force are not in contact with the respective fixed terminals 31 A, the switch is in the off state.

In this state, when the front wall portion 43 of the movable member 41A is pushed by the strike force S, and the movable member 41A is pushed into the housing 111A against the urging force of the coil spring 61, Each holding piece 54 is pushed by the frame part 24 and bent inward at the hinge part 55 so that each holding piece 54 does not come out of the striper S as shown in FIG. Pinch.

When the movable member 41A is pushed into the housing 11A, the traces 73a and 74a of the guide lever 71 are moved to the respective hard cams 51 and 53 in FIG. It swings so as to trace the lower side, and as shown in FIG. 42, the movable member 41A is pushed into the deepest portion of the housing 11A.

In this state, when the force for pushing the movable member 41A into the housing 11A via the striker S is released, the movable member 41A is protruded from the housing 11A by the coil spring 61. Be energized.

Therefore, the second trace part 7 4 a is guided by the cam surface at the tip of the second heart cam 53. With the induced restoring force, as shown in Fig. 43, each trace portion 73a, 74a is engaged with the corresponding cam concave portion 51a, 53a so as to lock. The mechanism is locked, and the movable member 41A is locked at the pushed position.

In the process of moving the movable member 41A into the housing 11A from the state shown in FIG. 40 to the state shown in FIG. 43, both ends of the pin 81 are connected as shown in FIG. As shown in Fig. 42, after making contact with both contact parts 3 3d, the fixed terminal 31A and both contact parts 3 3d are not contacted as shown in Fig. 42, but as shown in Fig. 43 As described above, the contact portions 3 3 d come into contact again and maintain the contact state.

Accordingly, as shown in FIGS. 43 and 44, when the movable member 41A is located at the pushed-in position, both ends of the pin 81 contact the contact portions 33d. , The switch is turned on.

With the lock mechanism locked, when the movable member 41A is pushed again into the housing 11A via the striker S against the urging force of the coil spring 61, the traces 7 3a and 7 4 As shown by the two-dot chain line in FIG. 42, a is guided by the inclined surface (cam surface) of the guide locking projection 44A, and the lock mechanism is unlocked. Therefore, when the force for pushing the movable member 41A into the housing 11A via the striker S in the unlocked state of the lock mechanism is released, the movable member 41A is moved from the housing 11A by the coil spring 61. The movable member 41A is urged in the protruding direction, and returns to the protruding position shown in FIG. 39, FIG. 40, and FIG. In the process in which the movable member 41A returns to the protruding position, both ends of the pin 81 come into contact with and separate from the fixed terminal 31A and the contact portions 33d through a process reverse to that described above. As shown in FIG. 0 and FIG. 41, both ends of the pin 81 are not in contact with the respective fixed terminals 31 A, 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 at the protruding position, and the switch is turned on when the movable member 41A is at the pushed-in position. However, the same effect as that of the first embodiment described above can be obtained.

In the embodiment described above, a pair of fixed terminals are disposed in the housing corresponding to the two opposing sides of the movable member, and both ends of the movable terminal project from the two opposing sides of the movable member. An example is shown in which the movable terminal is rotatable with respect to the movable member. However, by molding the movable terminal into a shape that is bent at a substantially right angle, both ends of the movable terminal are adjacent to the movable member. A similar effect can be obtained by a configuration in which a pair of fixed terminals are protruded from the side surface and a pair of fixed terminals are arranged in the housing so as to correspond to two adjacent side surfaces of the movable member.

Further, although an example in which the cross-sectional shape of the movable terminal is circular has been described, the cross-sectional shape of the movable terminal may be other than circular.

Furthermore, an example is shown in which a recess is provided inside the opening side of the housing so that the opening side portion of the housing of the pair of fixed terminals can be bent outward, but the elasticity of the housing and the fixed terminal is utilized. Thus, if the movable member and the movable terminal can be incorporated into the housing, the concave portion described above need not be provided. Industrial applicability

The switch-equipped latch of the present invention can be applied to other devices having a force opening / closing door described in the specification of an example applicable to a radio cassette, devices having a moving body that moves between a pushed position and a projected position, and the like. .

Claims

The scope of the claims

1. The movable member 41 urged by the urging member 71 to a projecting position where a part thereof protrudes from the housing 11 is piled by the urging force of the urging member and pushed into the housing. As a result, the push-push locking mechanism is locked to lock the movable member at the pushing position, and the switch is turned on or off, and the urging force of the biasing member pushes the movable member at the pushing position. The movable member is returned to the protruding position by the urging force of the urging member, and the switch is turned on or off by pushing the pile into the housing and pushing the locking mechanism into the unlocked state. With latch with

The switch is attached to the movable member 41, a movable terminal comprising a pin having both ends protruding from two side surfaces of the movable member, and a fixed terminal in the housing, wherein the movable member is in a protruding position. Both ends of the movable terminal are in non-contact and are in a non-conductive state or in contact with each other to be in a conductive state, and when the movable member is in the pushed-in position, both ends of the movable terminal are in a conductive state or in a non-contact state. And a pair of fixed terminals 31 that are in a non-conductive state.

A latch with a switch, characterized in that:

2. The two sides of the movable member are two opposite sides,

The movable terminal is rotatable with respect to the movable member;

The switch-equipped latch according to claim 1, wherein:

3. the cross-sectional shape of the movable terminal is circular;

3. The latch with a switch according to claim 1 or claim 2, wherein:

4. The movable terminal is bent into the opening side of the housing of the pair of fixed terminals 31 outward, and assembled into the cutout of the fixed terminal from the opening side of the housing.

4. The latch with a switch according to claim 1, wherein:

5. Inside the opening side of the housing, there is provided a concave portion capable of bending the opening side portion of the housing of the pair of fixed terminals outward.

5. The switch-equipped latch according to claim 4, wherein: