CN1649057A - Switch - Google Patents

Abstract

The invention provides a switch in which connection work of outside electric wires can be carried out regardless of connection wires of a display lamp block. A terminal plate housed in the container body, composed of a body having a front aperture, and a cover joined in the front face side of the body is provided with a contact piece with which the outside electric wires are elastically contacted, a chain locking piece that pinches the outside electric wires between the contact pieces, and a coupling piece of L shape to couple the contact pieces to the chain locking piece. The contact pieces and chain locking pieces compose an outside electric wire connecting part to connect the outside electric wires, and the rear end part of the site arranged along the partition wall in the body in the coupling piece compose a connect line connect part to connect the end part side of the connect line of the display lamp block.

Description

Switch

Technical field

The present invention relates to a kind of switch.

Background technology

At embedded type termination commonly used, in switch or wall socket, be well known that the guide pillar binding post as the terminal that is connected with external cable (for example, Japanese uncensored patent publications No.2003-249282, [0015]-[0018] section, Figure 13).

Herewith, the single-pole double throw switch with guide pillar terminals that as shown in figure 18, is referred to as " three-way cock " is by the device body 100 with three contactors, forms at the body 110 of its rear side formation with at the lid 120 that its front end forms.At the front end of device body 100, that is, and at the front end of lid 120, three joysticks 160 are installed are carried out the contact conversion of each contactor, at the back side of device body 100, promptly, at the back side of body 110, three guide pillar binding posts 130 that are connected with each contactor are installed.Guide pillar binding post 130 obtains by binding post screw 132 is screwed in the screwed hole (not shown), and screwed hole passes the wall on every side of circular terminal framework 131.The external cable that passes the perforated surface of terminal-framework 131 from the back side of device body 100 inserts and is installed with between the front end face of wall and binding post screw 132 around the terminal-framework 131.

With the switch shown in Figure 18-with work structure in, the screw (not shown) that is inserted into respectively in the hole 127 that forms on the left and right sides of lid 120 is threaded with switch enclosure in being embedded in building surface, and perhaps screw directly is threaded with this building surface.The decorative panel 190 that is provided with the window that is used for exposing joystick 160 is installed in the front end of lid 120.

Switch shown in Figure 180 comprises indicator light group 170 shown in Figure 19.Indicator light group 170 comprises: by the indicator light 171 that neon lamp is formed, this neon lamp is luminous in response to the contact conversion of contactor; The a pair of connecting line 175 that is connected with indicator light 171; Light cover 173 with part codan lamp 171.And the lid jack (not shown) that light cover 173 can insert is formed on the lid 120.On joystick 160, the illumination that makes indicator light 171 has been installed has been mapped to outside indicating device.Herewith, the end of a pair of connecting line 175 that is connected with indicator light 171 is connected with two guide pillar binding posts 130 respectively.

Except three-way cock, the switch as embedded type electric wire interconnect device for example, has the single pole single throw switch, is referred to as isolating switch; Double pole single throw switch is referred to as four-way cock, wherein two terminals of two terminals and all the other in four terminals one by one correspondence be connected, and can select two kinds of connections, etc.

In switch shown in Figure 180, realize with external cable be connected with guide pillar binding post 130 be connected work the time, therefore connecting line 175 must, just not need the connection work of external cable through extruding so that the connecting line 175 of indicator light group 170 can not break away from terminal-framework 131.And by during alternately two ends execution contacts of extrusion operation joystick are changed, during end of extruding joystick 160, load just is switched on or is disconnected at three-way cock.Be installed at indicating device under the situation of joystick 160 1 ends, be difficult to state by indicator light identification load.

Summary of the invention

Therefore, purpose of the present invention just provides a kind of switch that allows to finish external cable connection task and do not consider indicator light group connecting line.

According to specific embodiment, the invention provides a kind of switch, comprising: the device body that is installed with contactor; Many binding posts, these binding posts are electrically connected with contactor, are used to connect external cable; Joystick, this joystick is installed in the front end of device body, is used to carry out the contact conversion of contactor; With the indicator light group, be arranged on the outside of device body, comprise luminous indicator light and a pair of connecting line that is connected with indicator light in response to the contact conversion of contactor.Wherein a terminal in the many terminals that are connected with connecting line is provided with the connecting line connector of the external cable connector that is used to connect external cable and the end that is used to be connected connecting line.

For having said structure, because connecting the external cable connector of external cable and the structure of the connecting line connector that is connected the connecting line end is arranged on the connected terminal of connecting line, when therefore externally electric wire is connected with terminal, the connecting line of indicator light group just needn't push with ccontaining, do not consider that the connecting line of indicator light group also can carry out the connection task of external cable, the connection work that external cable is provided convenience thus.

Preferably, the indicator light group can comprise light cover, it is formed by the synthetic resin mould, be used to be installed with codan lamp, connecting line is derived from light cover, and this light cover by being engaged and be coupled with device body by the couple bead of the idol that forms in the contact pin on connecing the hole and being installed in another of light cover and device body that couple that is installed on one of them of light cover and device body.

For said structure, in the indicator light group, the light cover with indicator light detachably is installed on the device body, the assembly working of providing convenience thus.

Preferably, contactor, have as arrangements of terminal, the joystick of many terminals of one group and have and install side by side as two housing installed part per three difference on identical direction that couple sheet of one group, device body can comprise the anti-mis-insertion rib, is used to prevent that light cover from mispluging coupling between the sheet relatively of adjacent mutually in the same direction housing installed part.

For said structure, can avoid light cover to be fixed on the errors present of device body.

Preferably, light cover can comprise insulation strip, is used to isolate the pair of lead wires of indicator light.

For said structure, can guarantee the isolation distance between the pair of lead wires of indicator light at an easy rate.

Preferably, terminal can be arranged on the terminal plate of device body inside, can comprise: contact chip, form Elastic Contact with the external cable that enters into device body by cable jack, and cable jack passes device body; Locking plate is being extruded on the direction of contact chip, is used to keep the external cable between locking plate and the contact chip; And brace, being used to connect contact chip and locking plate, the external cable connector is made up of contact chip and locking plate, and the connecting line connector is made up of brace.

For said structure, because the connecting line connector is made up of brace, to compare with locking plate with contact chip, brace is not yielding, so safe connection can be carried out in the end of connecting line.

Preferably, the indicator light group can comprise interface unit, can receive a part of contactor in the inside of body, this contactor is electrically connected with the end of each connecting line, and with connecting line connector Elastic Contact, device body can comprise the insertion recess, this insertion recess be formed on the corresponding position of the connector of connecting line on, this body is inserted into by the elastic force that uses body and inserts in the recess; And from the body side outstanding connection pawl can engage with holding tank, it connects by inserting recess.

For said structure, because can being inserted at an easy rate, inserts in the recess body of interface unit, be inserted in the insertion recess by body interface unit, contactor just forms Elastic Contact with the connector of connecting line, so that the end of connecting line is connected with the connector of connecting line, with this connection work of providing convenience for the connector of connecting line.

Preferably, device body can comprise indicating device, is used for the illumination that indicator light sends is mapped to the outside, and this indicating device is installed as the annex of joystick.

For said structure, the state of indicator light can be discerned by indicating device, and no matter the operating position of joystick.

Description of drawings

Above-mentioned and further feature of the present invention and effect will become more apparent to those skilled in the art by detailed with reference to the accompanying drawings description preferred embodiment, wherein:

Fig. 1 is the cutaway view with the necessary parts of the connected switch of external cable according to first embodiment of the invention;

Fig. 2 is the cutaway view according to the necessary parts of first embodiment of the invention;

Fig. 3 (a) is the cutaway view of the necessary parts of switch, and Fig. 3 (b) is the zoomed-in view of the necessary components A of the Fig. 3 (a) according to first embodiment of the invention;

Fig. 4 is the decomposition diagram according to first embodiment of the invention;

Fig. 5 is the front view according to first embodiment of the invention;

Fig. 6 is the end view according to first embodiment of the invention;

Fig. 7 is the cutaway view according to first embodiment of the invention;

Fig. 8 is the cutaway view according to first embodiment of the invention;

Fig. 9 is the perspective view according to first embodiment of the invention;

Figure 10 is the cutaway view according to first embodiment of the invention;

Figure 11 (a) and 11 (b) are the cutaway views according to the necessary parts of first embodiment of the invention;

Figure 12 is the front view according to the necessary parts of the switch of the removal lid of first embodiment of the invention;

Figure 13 is the rearview according to the lid of first embodiment of the invention;

Figure 14 is the partial sectional view according to the indicator light group of first embodiment of the invention;

Figure 15 is the perspective view according to two terminal plates of first embodiment of the invention;

Figure 16 is the decomposition diagram according to the switch of second embodiment of the invention;

Figure 17 is the front view according to second embodiment of the invention;

Figure 18 (a) is the rearview of switch commonly used; Figure 18 (b) is the end view of switch commonly used; With

Figure 19 is the plan view of the indicator light group of switch commonly used.

Embodiment

Describe the present invention in further detail below with reference to Fig. 1 to 15, what wherein these accompanying drawings showed is preferred embodiment of the present invention.But the present invention also can embody with different forms, and should not be considered as the restriction that is subjected to following these embodiment that propose.On the contrary, these embodiment that provided are for the technical program will be more readily apparent to one skilled in the art with complete, have expressed protection scope of the present invention fully.Identical in this manual reference number is represented components identical.

(specific embodiment 1)

Hereinafter, will be referring to figs. 1 to 5 switches of describing according to first embodiment of the invention.

According to the first embodiment of the present invention, a kind of switch comprises device body 1, and it is made up of body 10 and lid 20, here body 10 is synthetic resin moulds of cube shaped, its front side (upside of Fig. 4) is open, and lid 20 also is the synthetic resin mould, engages with the front surface of body 10.Four assembly claw 11a and 11b are provided with on the horizontal direction of body 10 at interval, and the lateral surface from body 10 is outstanding respectively on the vertical direction of body 10.From the back of lid 20, be provided with outstanding assembling sheet 21, this assembling sheet 21 is provided with stop claw (not shown) that engages with assembly claw 11b and the assembly hole 21a that engages with assembly claw 11a.

Body 10 along horizontal direction within it portion be provided with three assembly chambers being divided by two next doors 12.Each assembly chamber 13 comprises three terminal plates 31,32 and 33 that are connected with external cable 5; With contactor 40, external cable 5 is inserted in the device body 1 by the cable jack 15 (Fig. 7 and 11 (a)) that forms on the rear wall of body 10.Each assembly chamber 13 along the vertical direction of body 10 within it portion be provided with three chambers, divided by two next doors 14.Last septal area is the terminal shell 13a that comprises terminal plate 31 and 32, and following septal area is the terminal shell 13b that comprises terminal plate 33, and septal area is the middle case 13c that comprises contactor 40.According to present embodiment, each terminal plate 31,32 has the terminal that is connected with external cable 5 with 33.

In order to ensure the space of shaking of following described joystick 60, the formation of lid 20 will make the front surface of the central unit on the vertical direction compare with the front surface of upper and lower end parts to cave in.On the vertical centre at lid two ends, form the connecting hole 27 of long hole shape, wherein attachment screw can insert and pass connecting hole 27, and the plate that couples that forms on the perforation side of this attachment screw and the switch-box (embedded type switch) in being embedded in building surface such as outside wall surface is spirally connected.And, be removably mounted on the front surface of lid 20 as the decorative panel 90 of the quadra type of synthetic resin mould.Joystick 60 is arranged in the square fenestra 91 of decorative panel 90.The size that fenestra 91 forms is enough to cover three joysticks 60.In other words, the size that joystick 60 forms is 1/3 of fenestra 91 sizes at their left and right sides respectively, and the size of the vertical direction of joystick 60 is slightly less than the size of the vertical direction of window 91.Respectively form brake hole 26 near four end angles of lid 20, the brake(-holder) block 92 (Fig. 9) outstanding from the back of decorative panel 90 is inserted into the brake hole 26.The switch of present embodiment directly is fixed on the building wall, is inserted into that attachment screw and building wall are spirally connected in the connecting hole 27.

Be provided with recessed part 22 on the front surface of lid 20 part between corresponding to connecting hole 27, recessed part 22 is provided with three fenestras 23 of spacing in the horizontal direction on its diapire.In fenestra 23, carry out activity with respect to lid 20 and install as the reverse bar 50 of synthetic resin mould is the same with pivot.Contactor 40 relies on the mobile of reverse bar 50 to open or closure.Oppositely bar 50 is arranged on front end obliquely, the connecting rod 54 that combines with joystick 60 with between the ladder sheet between them 53 formation one continuously.Be superimposed upon the joystick 60 that is formed by the synthetic resin mould on the front surface of lid 20 and be connected with the front surface of connecting rod 54, operate by using joystick 60, oppositely bar 50 is through moving the contact conversion of carrying out contactor.The size of the connecting rod 54 on the vertical direction of lid 20 is greater than the size of reverse bar 50.

The terminal plate 31 and 32 that is installed with in terminal shell 13a is formed by conductive metal sheet, and it comprises contact chip 31a and 32a, and these contact chips form Elastic Contact with the external cable 5 that passes through in the cable jack 15 access to plant bodies 1; Locking plate 31b and 32b, they are pressurizeing towards the direction of contact chip 31a and 32a, and external cable 5 inserts and remains between contact chip 31a and the 32a; With brace 31c and 32c, be used for contact chip 31a and 32a and locking plate 31b and 32b are connected as one continuously.In terminal plate 31 and 32, brace 31c and 32c form L shaped shape, and be installed with in terminal shell 13a with can be along the next door 14 hole surface and body 10 distribute, and remain between the inner surface of next door 14 and the body 10 relative with the next door.Terminal plate 31 and 32 is to bend to the L type by the metallic plate with band shape to obtain, and the one end is bent into the S shape, forms contact chip 31a and 32a thus, and the other end is bent into the J-shaped shape, forms locking plate 31b and 32b thus.

The terminal plate 33 that is installed with in terminal shell 13b is formed by conductive metal sheet, and it comprises two contact chip 33a, these contact chips with form Elastic Contact by the external cable in the cable jack 15 access to plant bodies 15; Two locking plate 33b, they are pushing towards the direction of each contact chip 33a, and external cable 5 inserts and remains between each contact chip 33a; With a brace 33c, be used for two contact chip 33a are connected with two locking plate 33b.In terminal plate 33, brace 332c forms L shaped shape, and is installed with in terminal shell 13b, with can be along the next door 14 hole surface and body 10 distribute, and remain between next door 14 and body 10 inner surfaces relative with next door 14.Terminal plate 33 is to bend to the L type by the strip metal plate that will have the crack on the two ends of length direction to obtain, and the one end is bent into the S shape, forms two contact chip 33a thus, and the other end is bent into the J-shaped shape, forms two locking plate 33b thus.

Cable jack 15 is formed on corresponding on the part between contact chip 31a, the 32a of the terminal plate on the rear wall of body 10 31,32 and 33 and 33a and locking plate 31b, 32b and the 33b, that is, two cable jacks 15 are formed on the rear wall of each terminal shell 13a and 13b.External cable 5 is inserted in the device body 1 by cable jack 15, and the leading section of external cable 5 inserts and remains between contact chip 31a, 32a and 33a and locking plate 31b, 32b and the 33b.External cable 5 forms with 33a with contact chip 31a, 32a and contacts, and terminal plate 31,32,33 and external cable 5 are electrically connected thus.And the front-end edge of locking plate 31b, 32b and 33b is connected with external cable 5.Therefore, external cable 5 is kept through machineries and can release unit body 1.Herewith, external cable 5 is insulating case electric wires, and its insulating case that inserts device body 1 partly is removed, can expose insulated electric conductor 5b.Therefore, external cable 5 remains on and just is meant between contact chip 31a, 32a and 33a and locking plate 31b, 32b and the 33b that insulated electric conductor 5b inserts between them, and maintains between them.Herewith, each terminal that is made of each terminal plate 31,32,33 is formed spring clip.

Each terminal shell 13a, 13b comprise that respectively electric wire discharges the releaser 34 of usefulness.The releaser 34 of terminal shell 13a is arranged between locking plate 31b, the 32b that installs in each terminal plate 31,32.Be installed with releaser 34 in terminal shell 13a and form and will make with the contacted compressing tablet 34a in the back of each locking plate 31b, 32b all outstandingly from its each left and right sides surface, and the control surface 34b that electric wire discharges usefulness integrally tilts outstanding from behind.Simultaneously, be installed with releaser 34 in terminal shell 13b and form and will make with the contacted compressing tablet 34a in the back of each locking plate 33b respectively outstandingly from its each left and right sides surface, and the control surface 34b that electric wire discharges usefulness integrally tilts outstanding from behind.

Operation seam 16 part corresponding to releaser 34 on the top and bottom sidewall of body 10 forms, and its front-end edge is opened, and operating surface 34b is exposed on the upper and lower side of body 10 by operation seam 16.Releaser 34 is kept must be in the swing of the inside of device body 1.When the front end of operating surface 34b moved up, releaser 34 just can be swung, and locking plate 31b, 32b and 33b are pushed by compressing tablet 34a, and crooked on away from the direction of contact 31a, 32a and 33a.In aforesaid structure, when the external cable 5 of operating surface 34b and splicing ear sheet 31,32 and 33 moves up together, locking plate 31b, 32b and 33b are bent and away from external cable 5, therefore, the mechanical grip of external cable 5 is released, and allows external cable 5 to take out from device body 1 thus.

Contactor 4 comprises two contact retention tabs 45 and 46 that are separately positioned on mesochite 13c inside, are formed with fixed contact 41a, 41b at the one end; With described later be to open/close part 43 by what the template conducting strip formed.The other end of each contact retention tab 45,46 is fixed corresponding to the front surface of body 10 hole faces by the stack of joint filling in the brace 31c of terminal plate 31,32.One end of contact retention tab 45,46 be arranged to mutually over against, fixed contact 41a and 41b be arranged to mutually over against.And, opening/close part 43 and on two surfaces on the thickness direction, be provided with moving contact 42a and 42b, each moving contact 42a forms with each fixed contact 41a or 41b selectively according to the swing of opening/closing part 43 with 42b and contacts.That is, when moving contact 42a contacted with fixed contact 41a formation, moving contact 42b was just away from fixed contact 41b, and when moving contact 42b contacted with fixed contact 41b formation, moving contact 42a was just away from fixed contact 41a.

Contactor 40 comprises contact chip 47, and this contact chip 47 is fixed to the front surface of the part that is provided with along the hole face of body 10 by joint filling in the brace 33c of terminal plate 33.From end edge low end face extension along the inside of body 10 of brace 48, brace 48 extends back from the ora terminalis of mesochite 13c side support chip 49 in shape.In the end of support chip 49, the V-shaped support slot (not shown) in cross section forms on the direction perpendicular to support chip 49 bearing of trends, and its front surface is opened.Here, the regulative mode of contact chip 40 will make out/close the end edge of part 43 to be inserted in the support slot that forms in support chip 49 and open/close part 43 around the support slot pivoted.On the inner bottom surface of each mesochite 13c of each assembly chamber 13 of body 10, a pair of maintenance wall 19 that keeps opening/close part 43 is outstanding forward.On the opposite face of maintenance wall 19, the rotation that forms V-type limits groove 19a, is inserted into the rotation qualification groove 19a from opening/close the outstanding tab 43a of part 43 lateral margins.Therefore, opening/close part 43 is rotated and limits groove 19a and be limited in the pivot rotating range.The counteracting spring 44 that is made of helical spring maintains out/closes between part 43 and the reverse bar 50.Being inserted into spring leaf 43b in counteracting spring 44 1 ends, to open/closing the front end of part 43 outstanding.

The other end of counteracting spring 44 is inserted in the sleeve pipe 51 that is installed on reverse bar 50 rear surfaces.On two side surfaces of the reverse bar 50 on the horizontal direction of device body 1, outstanding bearing flange 52, the front end of each bearing flange 52 forms slim gradually.On the left and right sides of each fenestra 23 on recessed part 22 bottoms that form on the lid 20, pair of bearings tab 24 is outstanding forward from the long ora terminalis of enclosing of fenestra 23.Form the recessed part 25 of bearing on the opposite face of bearing tab 24, wherein oppositely the bearing flange 52 of bar 50 is inserted in the recessed part 25 of bearing.The recessed part 25 pivoted bearing flanges 52 of bearing are can make it at least in its front end swing.

On two end faces of connecting rod 54 in the longitudinal direction, it is outstanding engaging with the pawl 61a that is connected on the leading section that is installed in connection leg 61 (Fig. 7) (rearward end) to connect pawl 54a, and connection leg 61 is outstanding from the rear surface of action bars 60.The middle part of connecting rod 54 in the longitudinal direction forms groove 54b, and the rib 63 (Figure 10) outstanding from the rear surface of action bars 54b is inserted into the groove 54b.On the rear surface of action bars 60, the outstanding contact rib 62 that contacts with the front surface of connecting rod 54.Therefore, action bars 60 can be fixed on the connecting rod 54 and can not rock.In addition, connecting rod 54 forms the inner bottom surface of the recessed part 22 that can not interfere lid 20 under the situation of rocking.

End on lid 20 vertical direction forms three transmission holes 28, is used to transmit the light that the indicator light 71 of the described indicator light group 70 in back sends, and three transmission holes 28 are the space in the horizontal direction.Banded prism group 80 is installed on the front end of lid 20, and prism group 80 comprises three prisms 81 on a body, and each rear portion of prism is inserted in each transmission hole 28.Therefore, the light that sends of indicator light 71 is transferred to the outside by prism 81.Herewith, prism group 80 is positioned at above the action bars 60, and between the outer surface of the interior perimeter surface of the fenestra 91 of decorative panel 90 and action bars 60.According to an embodiment, prism 81 as the indicating device of transmission indicator light 71 light is installed as the annex of action bars 60 on the vertical direction of device body 1, so that the state of indicator light can discern by indicating device, and do not consider the operating position (going up or the bottom) of action bars 60.

Indicator light group 70 is positioned at the outside of device body 1, and it comprises indicator light 71, by luminous neon lamp constitutes in response to the contact conversion of contactor; A pair of connecting line 75 is connected with the pair of lead wires 71a of indicator light 71; Current-limiting resistance 72 is between the connecting line 75 of the lead-in wire 71a of an end and a side; Light cover 73 is formed by the synthetic resin mould, is installed with indicator light 71 and resistance 72, and a pair of connecting line 75 is derived from light cover; With interface unit 76, be installed with a part of connector 77 in the inside of the body 76a of synthetic resin mould product, connector 77 is by the electrical connection of each end of connecting line 75 and brace 31c, the 32c formation Elastic Contact of terminal plate 31,32.In the inside of light cover 73, be used to separate indicator light 71 pair of lead wires 71a insulation strip 73a continuously and integrally outstanding from its inner surface so that obtain insulation distance between the pair of lead wires 71a of indicator light 71 easily, and needn't use other annex.And, according to an embodiment, two terminal plates 31 in three terminal plates 31,32 and 33 with 32 by constituting with the distolateral terminal that is connected of connecting line 75; Terminal plate 31 and 32 is made of connecting line connector 31d, 32d, and wherein the 14 part rearward end that are provided with are connected with the end of connecting line 75 along the next door.But according to present embodiment, the connecting line connector 31d that the external cable connector that is connected with external cable is connected with the end with electric wire 75, that 32d is installed in is 75 that be connected with each connecting line, on the terminal plate 31,32 as terminal, so that do not need pressure to keep the connecting line 75 of indicator light group 70 when externally electric wire 5 is connected with terminal plate 31,32, and, no matter the connection work of external cable 5 can be finished and the connecting line 75 of indicator light group 70, with this external cable 5 is provided to connect work easily.And, owing to connecting line connector 31d, 32d form as the part of brace 31c, 32c respectively, compare with locking plate 31b, 32b with contact chip 31a, 32a and to be difficult for deforming, the connector 77 of the interface unit 76 that forms on connecting line 75 ends can form with connecting line connector 31d, 32d safely and contact, thereby is electrically connected with its formation.

At the left and right sides of light cover 73 sidewall, two notch 73b that open at their front ends are provided with in vertical direction, and curved tabs 73c is arranged between two notch 73b, and curved tabs 73c can be crooked on thickness direction.Connecting flange 73d is outstanding from the outside of the leading section of curved tabs 73c, and connecting flange 73d engages with the connecting hole 29b that forms on every couple of brace 29a of housing installed part 29, and housing installed part 29 is outstanding from the rear surface of lid 20.Therefore, in light cover 73, connecting flange 73d engages with the connecting hole 29b that forms on brace 29a by the elasticity of using twisted plate 73c, so that light cover 73 combines with the lid 20 of device body 1.In the case, indicator light 71 is used for relative with the end edge of prism 81.In addition, in the present embodiment, as one group contactor 40, have the terminal member of three terminal plates 31,32 and 33, install together as per three of one group action bars 60 and the housing installed part 29 with two brace 29a (horizontal direction of device body 1) on identical direction.In device body 1, anti-error cutting 29c (Figure 13) be used to prevent light cover 73 insert housing installed parts 29 mutually over against brace 29a between, over against brace 29a is contiguous mutually on identical direction mutually.Therefore, light cover 73 prevents on its wrong position and being connected of device body 1.And on the connecting flange 73d of light cover 73, the inclined plane forms the raised face that will make from curved tabs 73c outside also less than its front, and therefore, connecting flange 73d can combine with the connecting hole 29b of brace 29a at an easy rate.In the present embodiment, the connecting hole 29b that forms on the brace 29a of lid 20 engages with the connecting flange 73d that forms on light cover 73, but but the another kind selection scheme is, by on the brace 29a of lid 20, forming connecting flange, and by form connecting hole on light cover 73, they can be bonded with each other.

In the connector 77 of interface unit 76, the part leading section outstanding from body 76a bends to the J-shaped shape, connector 77 is applicable to that face relative with locking plate 31b, 32b on the thickness direction of part forms Elastic Contact, and this part is 14 settings along the next door on brace 31c, the 2c of terminal plate 31,32.

According to present embodiment, on the rear surface of body 10, on corresponding to the position of each connecting line connector 31d, 32d, form insertion recess 10a, body 76a is inserted among the insertion recess 10a by the elasticity of the body 76a of use interface unit 76.The connection pawl 76b outstanding from the side surface of body 76a engages with the holding tank 10b that is connected by inserting recess 10a.Therefore, the body 76a of interface unit 76 can be inserted at an easy rate and insert among the recess 10a, and be inserted into by body 76a and insert among the recess 10a interface unit 76, connector 77 can form Elastic Contact with connecting line connector 31d, 32d, then, the end of connecting line 75 is connected with connecting line connector 31d, 32d, connects work easily for connecting line connector 31d, 32d provide thus.

As mentioned above, according to one embodiment of present invention, each interface unit 76 is connected with terminal plate 31,32 from the rear side of device body 1, and the series circuit of resistance 72 and indicator light 71 can be inserted between fixed contact 41a, the 41b.Three-way cock is mainly used in the ON/OFF of middle lamps such as stair.Can be installed in any position according to three-way cock of the present invention, as on the step or under the step, and can be on the step or operate the lamp of ON/OFF stair under the step.The annexation of these circuit is known, has therefore just omitted its description.

(specific embodiment 2)

Below with reference to Figure 16 and 17 switches of describing according to second embodiment of the invention.

The basic structure of the switch almost construction of switch with first specific embodiment is identical, and the horizontal direction size of body 10 approximately is 1/3 of the first specific embodiment body, 10 sizes.The difference of second embodiment and first embodiment is contactor 40, and terminal plate 31,32,33, reverse bar 50, back-moving spring 44, action bars 60 and indicator light group 70 etc. only respectively are provided with one.Meanwhile, the size that is provided with according to the action bars 60 of second embodiment approximately is three times of horizontal direction size of the first specific embodiment action bars 60.The size of action bars 60 settings will be enough to cover the fenestra 91 of a decorative panel 90.Identical in other structure among second embodiment and first specific embodiment.In Figure 16 and 17, with the identical reference number of parts use identical among first embodiment.

As mentioned above, embodiments of the invention are described as an example with three-way cock, but the present invention is not limited to three-way cock, for example, and applicable to isolated form switch etc.And the contact conversion of contactor 40 and the state variation of indicator light 70 can not be subjected to special restriction.

Though the present invention has done special demonstration and description with reference to its specific embodiment; but those of ordinary skill in the art should be understood that under the situation that does not break away from spirit of the present invention that the back claim limited and protection range, can make variations and modifications in form and details to it.

Claims (7)

1. switch comprises:

Be installed with the device body of contactor;

Many binding posts, these binding posts are electrically connected with contactor, are used to connect external cable;

Joystick, this joystick is installed in the front end of device body, is used to carry out the contact conversion of contactor; With

The indicator light group, this indicator light group is arranged on the outside of device body, comprises indicator light, the luminous indicator light and a pair of connecting line that is connected with indicator light in response to the contact conversion of contactor, wherein:

A terminal in the many terminals that are connected with connecting line is provided with the connecting line connector of the external cable connector that is used to connect external cable and the end that is used to be connected connecting line.

2. switch as claimed in claim 1, it is characterized in that: the indicator light group comprises: light cover, it is formed by the synthetic resin mould, be used for being installed with codan lamp within it, connecting line is derived from light cover, and this light cover engages and couples with device body by the bead that couples on will being connect the hole and be installed in another of light cover and device body by the idol that forms in the brace that is installed on one of them of light cover and device body.

3. switch as claimed in claim 2, it is characterized in that: contactor, have as arrangements of terminal, the joystick of many terminals of one group and have and install side by side as two housing installed part per three difference on identical direction that couple sheet of one group, device body can comprise the anti-mis-insertion rib, is used to prevent that light cover from mispluging coupling between the sheet relatively of adjacent mutually in the same direction housing installed part.

4. switch as claimed in claim 2 is characterized in that: light cover can comprise the insulation rib, is used to isolate the pair of lead wires of indicator light.

5. switch as claimed in claim 1, it is characterized in that: terminal can be arranged on the terminal plate of device body inside, can comprise: contact chip, this contact chip forms Elastic Contact by cable jack that passes device body and the external cable that enters into device body; Locking plate, this locking plate is being extruded on the direction of contact chip, is used to keep the external cable between locking plate and the contact chip; And brace, be used to connect contact chip and locking plate, wherein:

The external cable connector is made up of contact chip and locking plate, and the connecting line connector is made up of brace.

6. switch as claimed in claim 5, it is characterized in that: the indicator light group can comprise interface unit, can receive a part of contactor in the inside of body, this contactor is electrically connected with the end of each connecting line, and with connecting line connector Elastic Contact, device body can comprise the insertion recess, this insertion recess be formed on the corresponding position of the connector of connecting line on, this body is inserted into by the elastic force that uses body and inserts in the recess; And from the body side outstanding connection pawl can engage with holding tank, holding tank is connected with the insertion recess.

7. switch as claimed in claim 1 is characterized in that: device body can comprise indicating device, is used for the illumination that indicator light sends is mapped to the outside, and this indicating device is installed as the annex of joystick.

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