CN2793902Y - Button switch with forced escaping - Google Patents

Abstract

The utility model relates to a button switch with forced escaping. The utility model is composed of a base, an extension pull rod, an upper cover and an actuator. The actuator is buttoned, and a strong spring between the upper cover and the actuator is compressed, which leads the extension pull rod and a pressure terminal to move downwards until two movable contacts respectively contact fixed contacts of an input terminal/an output terminal at both sides of the inner part of the base. Therefore, a power supply is conducted. When the actuator is loosened, the strong spring stretches, which leads the extension pull rod and the pressure terminal to move upwards, the two movable contacts forcedly escape from the fixed contacts of the input terminal/the output terminal at both sides, and the power supply is cut off. The utility model can ensure the using safely of an electric appliance, such as a tool machine.

Description

Tool is forced the push switch of disengaging

Technical field

The utility model is a kind of push switch, refers to that especially a kind of tool forces the push switch that breaks away from, to guarantee electric equipment products, and the safety used of toolroom machine for example.

Background technology

Switch is used for power taking for us, row year arranged, also, see through the setting of switch for the necessary device of control power supply supply, people can be cut off when supply for power supply in not intending, avoid supplying and grow disaster because of power supply is lasting.Then have in operation constant for connecting, but the Live switch that cuts off again during not power taking, and constant be open close, but the normally closed switch of just connecting during power taking.So, use the product of electric power all to have the setting of switch such as, and the basic start principle of switch mainly is the connection that sees through two electrodes, forming the power taking state of path, and during two electrode access failures, be disconnection, be can't the power taking state this moment.

Generally speaking, switch is pursued, except that conducting and disconnection really, fail safe also be important considerations, for example, must make its leakproof reach not misconnection.Promptly with toolroom machine, for example electric drill, electric saw or mill are example, because it has the danger of operation, normally adopt normally closed switch for it, that is the user is not during push switch, it is to be in off-position, and this measure can provide toolroom machine unlikely continued power when non-operating state really, to guarantee considering of personal safety.But toolroom machine often makes two contact terminals (silver point) because of fusion, and becomes tacky state, and then cause power supply short circuit at high electric current or under the high temperature that contact is produced repeatedly.Because existing normally closed switch mostly adopts the way of contact power taking of single fulcrum,, because of can't separating, and the danger that jeopardizes property safety is arranged when two contact terminals during in tacky state.So, how to improve the structure of existing push switch, it is possessed forces to break away from, with the contact terminal that overcomes toolroom machine at high electric current or under the high temperature that contact is produced repeatedly, institute forms the short circuit phenomenon of adhering, and is the difficult problem that the dealer demands urgently breaking through.

In view of this, the utility model applicant this in being engaged in the experience of various switches and electronic product research and development for many years with production and marketing, phase can overcome the serious disappearance that existing single fulcrum push switch causes short circuit easily, through experiment and test repeatedly, and then develop and " tool force break away from push switch " of the present utility model.

The utility model content

The utility model main purpose is to provide a kind of tool to force the push switch that breaks away from, it comprises: a base, hollow base frame for open-top, be provided with at least one room in it, so that for an input that connects utmost point device/go out terminal ccontaining with the location, this terminal is respectively equipped with a fixed contact, then hangs down relatively therebetween and establishes a pair of guide posts; One telescopic lever, its top is a depression bar, stage casing horizontal expansion one driven disc, and combine with at least one crimp type terminal, two fixed contacts of correspondence below, this terminal two ends have a movable contact respectively, and this telescopic lever and crimp type terminal be socketed on a pair of guide posts, and are able to lifting; One loam cake is that base is covered and seals, and its top voltage supply bar stretches out, and an end is provided with an axial region; One actuator, one end are coupling in an axial region, and inwall then is connected with depression bar, in addition a brute spring are located between loam cake and the actuator; By pushing actuator, and the compression brute spring, telescopic lever and crimp type terminal thereof are moved down, contact with the fixed contact of the input of both sides/go out terminal respectively up to two movable contacts, with turn-on power; When unclamping actuator, then the stretching, extension by this brute spring makes on telescopic lever and the crimp type terminal thereof and carries, thereby makes two movable contacts force to break away from the input of both sides/go out the fixed contact of terminal, to cut off the electricity supply.

Secondary objective of the present utility model is to provide a kind of tool to force the push switch that breaks away from, wherein be respectively equipped with an arc spring lamination between this crimp type terminal outside and guide posts, its movable end because of length travel apart from the change effect, make telescopic lever and crimp type terminal after crossing a critical point, promptly change self radian, and then produce crimp force and elastic force effect, make each movable contact can closely contact or break away from the fixed contact of both sides, and make power turn-on or disconnection.

The another purpose of the utility model is to provide a kind of tool to force the push switch that breaks away from, it further comprises an auxiliary resilience mechanism, it is located between two guide posts, and be vertical interlaced with it, this mechanism is with coil tension spring two ends difference socket one sliding shoe, this two sliding shoe is to be placed between the horse of telescopic lever, the prominent relatively diagonal form awl piece of establishing in it; By this awl piece is subjected to two sliding shoes and pushes its inclined-plane, and produce the kinetic energy that moves on moment, to assist separating of two movable contacts and two fixed contacts.

The utility model purpose again is to provide a kind of tool to force the push switch that breaks away from, it further comprises a clamping and drawing device, this device is to be coupling in the movable end of actuator with a toggle, and one side socket one props up the stretching, extension spring of actuator inwall, and side is then extended a button hook downwards in addition; So that by stirring this toggle, it is the compressing and stretching spring, in addition the button hook of end then gos deep into the clamping groove that loam cake institute vertically presets, and makes the actuator clasp joint in loam cake, and can't resilience.

Description of drawings

Be further to disclose concrete technology contents of the present utility model, at first see also graphic, wherein:

Fig. 1 is the three-dimensional exploded view of the utility model push switch;

Fig. 2 shows off-state for the profile of the utility model group after showing;

Fig. 3 shows on-state for another profile of the upright back of the utility model group;

Fig. 4 is the local amplification profile of the utility model base and telescopic lever;

Fig. 5 is another local amplification profile of the utility model base and telescopic lever;

Fig. 6 is the stereogram of the utility model group after upright.

Embodiment

As shown in Figures 1 to 4, basically, the utility model push switch is by a base 1, one telescopic lever 2, one loam cakes 3, and an actuator 4 combines.

Wherein, base 1 is for a top is open hollow base frame, and it has a horizontal strip room 11, connects the ccontaining of utmost point device 12 and location so that chat after supplying.As shown in the figure, for forming a loop, so this room 11 is separated into front and rear portions via a next door 111, but not as limit, it also must constitute the power control switch of a three-phase via the next door of two flat shapes, but this is a prior art, does not intend giving unnecessary details at this.The utility model only discloses a winding utmost point and is illustrated.Wherein, these anterior room 11 two ends confess that respectively one connects the ccontaining and location of an input terminal 121 and a lead-out terminal 122 of utmost point device 12, this top, inboard opposite end of importing/going out terminal 121,122 is respectively equipped with a fixed contact 121a, 122a, then hang down relatively therebetween and establish a pair of guide posts 13, so that, it is able in 13 length travels of two guide posts for socket telescopic lever 2.

These input terminal 121 outsides are riveted joint one wiring guide bracket 121b, and the exposed end of power line is to insert its line hole 121c that laterally offers, then with a coupling unit 121e, for example screw by with the vertical conjugate foramen 121d that communicates of this line hole 121c, can push this exposed end, it is fixed in the wiring guide bracket 121b, so that make external power source be supplied to input terminal 121.And this lead-out terminal 122 outside convergence part 122b is a protuberate basic unit 1, so that link apace with the intercalation terminal of power line in the toolroom machine.In addition, this lead-out terminal 122 has one and is vertical to the L shaped pressure contact portion 122c that extends, so that press the triangle elastomer 122d in one depression of room 11 bottoms, makes this lead-out terminal 122 slightly have elastic displacement ability longitudinally basically.

Telescopic lever 2 tops are provided with a depression bar 21, stage casing horizontal expansion one driven disc 22,23 of the horses that itself and below are  shape have a gap 24, the prominent tenon 241 (because of the projection angle relation is not shown) of establishing in horse 23 tops in this gap 24, so as with the wearing and combining of the microscler film trap 251 of a crimp type terminal 25.These crimp type terminal 25 two ends are respectively equipped with outstanding downwards movable contact 252, so that form contact with aforesaid fixed contact 121a, 122a or separate.Moreover this crimp type terminal 25 is unlikely significantly to be moved to both sides in order to make, so this gap 24 and piece tenon 241 must be via being provided with fin 242 so that the rib groove 253 that is oppositely arranged with crimp type terminal 25 snapping each other, make this crimp type terminal 25 unlikely about skew.

As shown in the figure, this rib groove 253 is to be located at crimp type terminal 25 edges and/or film trap 251 medial margin stage casings.And this driven disc 22 forms a recessed guide channel 221 respectively corresponding to two guide posts, 13 positions, via this two guide channel 221 and film trap 251 formed hollow outs, can easily telescopic lever 2 be socketed on the guide posts 13, makes it be able to length travel successfully.And for providing this telescopic lever 2 in the displacement process, can form crimp force and the downward effect of elastic force automatically in a critical point, so, these crimp type terminal 25 outsides and 13 of guide posts are respectively equipped with an arc spring lamination 26, see also Fig. 2, when telescopic lever 2 was not stressed, the movable end of this arc spring lamination 26 (that is crimp type terminal 25 outsides) was a little more than its stiff end (that is guide posts 13 tops), and the radian of this arc spring lamination 26 is less.See also Fig. 3 and Fig. 4, when telescopic lever 2 is bestowed external force, crimp type terminal 25 is moved down synchronously, when crossing a critical point, the radian that this arc spring lamination 26 is bigger because of distortion forms, so that crimp type terminal 25 is applied a pressure, that is the downward effect of formation elastic force, at this moment, the movable end of this arc spring lamination 26 is a little less than its stiff end, make the movable contact 252 of crimp type terminal 25 both sides closely prop up fixed contact 121a, the 122a of input terminal 121 and lead-out terminal 122 respectively, form the conducting of power supply according to this.Wherein, for increasing the intensity and the rigidity at guide posts 13 tops, so it is set a metal stator 131, the then oblique respectively fin 254 that stretches out in crimp type terminal 25 outsides, both are equipped with catching groove 132,255 for it, so that with the coak 261 of arc spring lamination 26 both sides institute projection snapping each other, to increase the fastness of combination.

See also Fig. 1 and Fig. 5, the utility model is provided with an auxiliary resilience mechanism 14 in addition, it is located between two guide posts 13, and be vertical interlaced with it, this mechanism is with a coil tension spring 141 two ends difference socket one sliding shoe 142, wherein, this auxiliary resilience mechanism 14 is to combine with room 11 with a capping 143, in order to define the activity space of this coil tension spring 141 and two sliding shoes 142.This two sliding shoe 142 is to be placed between the horse 23, and the prominent relatively diagonal form awl piece 231 of establishing in the horse 23, be when pressing down with telescopic lever 2, this pushes sliding shoe 142 to awl piece 231 belows, make its compression spring 141, touch room 11 diapires up to horse 23 root edges, spring 141 stretches, and this moment, sliding shoe 142 was to be positioned at this to awl piece 231 tops.But when this telescopic lever 2 is subjected to moving up when brute spring 35 stretches, then this is subjected to two sliding shoes 142 to awl piece 231 and pushes its inclined-plane, and the kinetic energy that generation moved on moment, and help separating of movable contact 252 and two fixed contact 121a, 122a, and be difficult for producing the phenomenon that contact terminal is melting.In addition, the horse 23 of this telescopic lever 2 is set a metal fixed mount 27 for gaining in strength and rigidity with it.

Loam cake 3 is that base 1 is covered and seals, for example is combined as a whole in the mode of clasp 15 between the two with catching groove 31, but not as limit.This loam cake 3 is opened a perforation 32 corresponding to telescopic lever 2 tops, for its usefulness of stretching out,, be to get socket one dirt-proof boot 33 with this outstanding perforation 32 in addition for avoiding dust to enter in the base 1, its tool hole also stretches out for telescopic lever 2, with avoid because of dust the short circuit phenomenon that may cause.These loam cake 3 one distal process are established an axial region 34, and it is to be coupling with an actuator 4, in addition a brute spring 35 are assembled in the location lug 36,43 between loam cake 3 and the actuator 4, when this actuator 4 is not operated, are to be in the extratensive type attitude.

Actuator 4 is a strip lever, and the axis hole 41 of one end is to be coupling in fulcrum 34, and inner have a handle hook 42 corresponding to depression bar 21 top short slots 211 positions, and clasp joint each other, and this short slot 211 highly is slightly larger than handle hook 42, so that has a gap therebetween.As shown in Figure 2, when not operating, this handle hook 42 is to hook short slot 211 upper limbs, make whole group telescopic lever 2 be subjected to actuator 4 outer Zhang Zuoyong and on carry.As shown in Figure 3, during operation, push actuator 4, then prop up short slot 211 lower edges behind its this gap of first line displacement, at this moment, telescopic lever 2 just moves down synchronously along with pushing of actuator 4.

And need long-time the use for taking into account in some occasion, the utility model further comprises a clamping and drawing device 5, it is to be coupling in the movable end of actuator 4 with a toggle 51, and one side socket one props up the stretching, extension spring 52 of actuator 4 inwalls, and side is then extended a button hook 53 downwards in addition.When stirring this toggle 51, it is a compressing and stretching spring 52, and in addition the button hook 53 of end then gos deep into 3 vertical default clamping grooves 36 of loam cake, make this actuator 4 because of clasp joint in loam cake 3, and can't resilience, and then make push switch be in lasting "on" position.So via aforementioned description and operating principle analysis to each assembly, the space kenel after the utility model group is upright promptly as shown in Figure 6.

Please consult Fig. 2 and Fig. 3 again, the utility model is when operation, only need push actuator 4, can make telescopic lever 2 to bottom offset, and by by two be provided with relatively arc spring lamination 26 because of the movable end length travel apart from the change effect, after crossing a critical point, promptly change self radian, and then produce crimp force and elastic force effect, make each movable contact 252 can closely contact or break away from fixed contact 121a, the 122a of both sides, and make power turn-on or disconnection.Otherwise if when not intending using, then hand is decontroled actuator 4, at this moment, by the extensional process of brute spring 35, makes actuator 4 propose the supply that can cut off the electricity supply on the whole telescopic lever 2.

So via enforcement of the present utility model, because of the crimp type terminal two ends of telescopic lever below have movable contact, so that desire is when forming power turn-on, this two movable contact must contact with the fixed contact of importing/go out terminal respectively; If wherein one group of activity, when fixed terminal is melting, organizing activity, fixed terminal separately still can be by the extensional process by a brute spring, and the synchronization lifting of telescopic lever and crimp type terminal, and forms the effect of desired pressure disengaging.In addition, by by two be provided with relatively arc spring lamination because of the movable end length travel apart from the change effect, make telescopic lever and crimp type terminal after crossing a critical point, promptly change self radian, and then generation crimp force and elastic force effect, make each movable contact can closely contact or break away from the fixed contact of both sides, and make power turn-on or disconnection.Moreover the utility model is provided with an auxiliary resilience mechanism in addition, and it can provide a kinetic energy, breaks away from fixed contact to assist movable contact.Particularly, the utility model is tool one clamping and drawing device in addition, and it can make push switch be in lasting "on" position, can be rated as a big innovation and breakthrough of push switch.

That the utility model disclosed is a kind of of preferred embodiment, and patent right category of the present utility model is not all taken off in Ju Bu change or modification and come from technological thought of the present utility model and be easy to the person of knowing by inference by the people who has the knack of this skill such as.

Claims (10)

1. a tool is forced the push switch that breaks away from, it is characterized in that comprising:

One base is the hollow base frame of open-top, is provided with at least one room in it, so as for an input that connects utmost point device/go out terminal ccontaining with the location, this terminal is respectively equipped with a fixed contact, then hangs down relatively therebetween and establishes a pair of guide posts;

One telescopic lever, its top is a depression bar, stage casing horizontal expansion one driven disc, and combine with at least one crimp type terminal, two fixed contacts of correspondence below, this terminal two ends have a movable contact respectively, and this telescopic lever and crimp type terminal be socketed on a pair of guide posts, and are able to lifting;

One loam cake is that base is covered and seals, and its top voltage supply bar stretches out, and an end is provided with an axial region;

One actuator, one end are coupling in an axial region, and inwall then is connected with depression bar, in addition a brute spring are located between loam cake and the actuator;

By pushing actuator, and the compression brute spring, telescopic lever and crimp type terminal thereof are moved down, contact with the fixed contact of the input of both sides/go out terminal respectively up to two movable contacts, with turn-on power; When unclamping actuator, then the stretching, extension by this brute spring makes on telescopic lever and the crimp type terminal thereof and carries, thereby makes two movable contacts force to break away from the input of both sides/go out the fixed contact of terminal, to cut off the electricity supply.

2. tool as claimed in claim 1 is forced the push switch of disengaging, it is characterized in that described this input terminal outside is to connect a wiring guide bracket, it laterally offers a line hole, in addition with a coupling unit by with the vertical conjugate foramen that communicates in this line hole so that connect external power source; And this convergence part, lead-out terminal outside is a protuberate basic unit, and it has one in addition and is vertically to the pressure contact portion that extends, so that press the interior elastomer of room bottom one depression.

3. tool as claimed in claim 1 is forced the push switch that breaks away from, it is characterized in that the driven disc of described this telescopic lever and the horse of below have a gap, and the horse top is prominent establishes a tenon, so as with the wearing and combining of the film trap of a crimp type terminal; And this gap and piece tenon are provided with fin, so that the rib groove that is oppositely arranged with crimp type terminal snapping each other.

4. tool as claimed in claim 1 is forced the push switch of disengaging, it is characterized in that, be respectively equipped with an arc spring lamination between described this crimp type terminal outside and guide posts, its movable end because of length travel apart from the change effect, make telescopic lever and crimp type terminal after crossing a critical point, promptly change self radian, and then produce crimp force and elastic force effect, make each movable contact can closely contact or break away from the fixed contact of both sides, and make power turn-on or disconnection.

5. tool as claimed in claim 4 is forced the push switch of disengaging, it is characterized in that, a metal stator is set at described this guide posts top, and this metal stator and the crimp type terminal outside is equipped with catching groove, so as with the coak of arc spring lamination both sides institute projection snapping each other.

6. tool as claimed in claim 1 is forced the push switch of disengaging, it is characterized in that, further comprise an auxiliary resilience mechanism, it is located between two guide posts, and be vertical interlaced with it, this mechanism is that this two sliding shoe is to be placed between the horse of telescopic lever with coil tension spring two ends difference socket one sliding shoe, the prominent relatively diagonal form awl piece of establishing in it; By this awl piece is subjected to two sliding shoes and pushes its inclined-plane, and produce the kinetic energy that moves on moment, to assist separating of two movable contacts and two fixed contacts.

7. tool as claimed in claim 6 is forced the push switch of disengaging, it is characterized in that, described this horse inner peripheral is set a metal fixed mount, and should auxiliary resilience mechanism combine with room with a capping in addition, in order to define the activity space of this coil tension spring and two sliding shoes.

8. tool as claimed in claim 1 is forced the push switch of disengaging, it is characterized in that a prominent perforation and socket one dirt-proof boot of establishing of described this loam cake, this dustproof tackling hole stretching out for telescopic lever.

9. tool as claimed in claim 1 is forced the push switch of disengaging, it is characterized in that described this actuator inwall is provided with a handle hook, and it is to be placed in the short slot at depression bar top.

10. tool as claimed in claim 1 is forced the push switch of disengaging, it is characterized in that, further comprise a clamping and drawing device, this device is to be coupling in the movable end of actuator with a toggle, one side socket one props up the stretching, extension spring of actuator inwall, and side is then extended a button hook downwards in addition; So that by stirring this toggle, it is the compressing and stretching spring, in addition the button hook of end then gos deep into the clamping groove that loam cake institute vertically presets, and makes the actuator clasp joint in loam cake, and can't resilience.

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