CN1026624C

CN1026624C - Pedal switch

Info

Publication number: CN1026624C
Application number: CN 90106752
Authority: CN
Inventors: 张芳雄
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-08-03
Filing date: 1990-08-03
Publication date: 1994-11-16
Anticipated expiration: 2005-08-03
Also published as: CN1058660A

Abstract

The present invention relates to a foot switch which is mainly provided with a switch base for a switch box, a pedal and a switch cover, wherein the switch box is used for installing a switch; the pedal can reset automatically; when stepped, the pedal transmits the motion of electrical connection to the switch through a pushing rod; the switch cover is used for covering the switch box. The present invention is characterized in that a cross slot room is arranged in the switch; an insulating block is arranged in a pod channel; one longitudinal end of the insulating block is pushed by an elastic element, while the other end of the insulating block pushes a priming rod which is longitudinally controlled to slide; the insulating block is also provided with a transversal slot hole which is used for installing a moving connecting sheet, and the moving connecting sheet moves in a perpendicular channel, both ends of which are provided with fixed connecting sheets. When the pedal is stepped, the insulating block is pushed by the pushing rod and the priming rod, so the moving connecting sheet and the fixed connecting sheet are electrically connected with each other in an alternating mode.

Description

Pedal switch

The present invention relates on a kind of industrial machine in order to easy operation and can make user's both hands can be engaged in the foot-switch of other operation.

On the industry for to make the operator that preferable conversion degree of freedom can be arranged when machine run, with some for example the modulation of speed by manually changing foot-propelled into, thus, operator's both hands just can spare each operating mechanism of flexible manipulation (button), this shows its effect especially in industrial machines such as lathe or shoemaking facility, one of this type of foot-operated switch example that is shown in Figure 1, this foot-operated switch side one of on a base plate 1 forms the switch enclosure 2 of the saturating sky of an end face, be coated with a pivot 3 by switch enclosure 2 one sides near base plate 1 place, this pivot 3 has a slurcam 4 at switch enclosure 2 internal fixation, the ear arm 5 of the two ends of pivot pass-out switch enclosure 2 and a pedal 5 ' fixedly connected, one spring 6 is arranged with the pedal ejection between pedal 5 and base plate, so that the recuperability of these pedal 5 pressurizeds to be provided, establish a vertical installing plate 7 in the switch enclosure 2 to fix a derailing switch 8, this derailing switch 8 have a citation rod 8 ' with slurcam 4 by pasting, with citation rod 8 ' relative side three leading foots 8 are being arranged " in order to wire bonds.So, step on pedal 5 and promptly touch citation rod 8 ' and in derailing switch 8, finish conducting with swing slurcam 4.But, if the operating performance that canvasses this derailing switch 8 with cooperate benefit, the following shortcoming of being not difficult to find to have:

(1) be the action signal of derailing switch 8 shown in Fig. 1 (A), when citation rod 8 ' pushed to is capable, spring leaf 8a in the derailing switch 8 promptly produce flexural deformation and with is connected leading foot 8 " interior contact pin 8b contact; cause the conducting of circuit; because this spring leaf 8a system is with the fulcrum of a stiff end as bending; so in the indefinite impulsive force next; then cause one after another spring leaf 8a; and the degree of accuracy when little by little influencing it and stepping on, even fracture and can't use the flexible deformation who causes metal fatigue with respect to stiff end by pedal 5.

(2) because citation rod 8 ' action to follow the connection of interior contact pin 8b with spring leaf 8a only be single step, even several derailing switches 8 arranged side by side in switch enclosure 2, the operation of the single slurcam 4 of mat also can't reach the sequential control purpose of each derailing switch 8 by means of each derailing switch 8 with different wiring, because the start of each derailing switch 8 only is a single step, thereby fail to do the use that sequencing cooperates, therefore, its opereating specification is more to become narrow and function also becomes simple.

For the purpose of figure improved the stationarity of foot-operated switch in action, it was the patent of No. 51890 " foot-operated oil pressure electric switch " that the bulletin number is promptly arranged before the inventor, and its practical effect is affirmed.Right be intended to throw off existing pattern in industrial community and reach value person on the industry all over sight switch apparatus, the creation of its invention promptly has " the symmetrical impact switch of equipment is exceeded at the use dead point " of No. the 096016th, bulletin number, No. 096017 " switch of breech locked " etc. all to be.The invention of this case promptly is existing foot-switch general layout, and bring into play the operation usefulness of its continuity, sequencing, therefore, the inventor furthers investigate energetically, develops, repeatedly, realize a kind of the present invention that can overcome above-mentioned weak point finally through constantly analyzing and improvement.

The present invention's fundamental purpose is to provide a kind of foot-switch, its be pedal the indirect derailing switch of action, be to provide the connection of advancing of the moving contact pin and the forward of static joining-pin, so can guarantee the uniform accuracy of derailing switch in connection by the two-level spring device.

The present invention's secondary objective is to provide a kind of foot-switch, have spring assembly between its moving contact pin and can provide it to make the stroke of two-way throwing, therefore when arranged side by side derailing switch, be to reach single pedal according to the default distance of positions of its citation rod and slurcam to realize the purpose that stylizes and control.

In view of the above, the foot-switch according to the present invention includes substantially: a switch base is formed with a switch enclosure with the installing derailing switch on it; One pedal is one to have the plate of automatic restorability, will connect action to the derailing switch transmission in the switch enclosure by a catch bar when it is jammed on; One switch cover is with the involution switch enclosure.This foot-switch is characterised in that: this switch apparatus has the housing that is formed with the cross bath chamber, in the one conduit, hold and place collets, these collets are headed on by a flexible member at this conduit direction one end, the other end then leans one and passes its shell wall, can do suitable displacement then by the citation rod of stop, on these collets and be provided with a horizontal cross slotted eye, adorn within it with two moving contact pin backup slotted eye walls for a flexible member, described moving contact pin is designed to put into the conduit orthogonal thereto with above-mentioned conduit, then is provided with static joining-pin in the both sides at these quadrature conduit two ends; The structure of the above-mentioned composition of mat, when stepping on pedal, the effect by catch bar promotes citation rod, is can stablize freely to promote collets suitablely, and dress moving contact pin is within it carried out and alternately the connecting of static joining-pin.

Now be described as follows to purpose of the present invention, feature and effect in conjunction with the accompanying drawings with regard to two preferred embodiments:

Fig. 1 is a kind of perspective diagram of conventional foot-switch;

Fig. 2 is the perspective exploded view of a preferred embodiment of the present invention;

Fig. 3 is the contact synoptic diagram of preferred embodiment shown in Figure 2;

Fig. 4 is the perspective diagram of another preferred embodiment of the present invention;

Fig. 5 is the contact synoptic diagram of preferred embodiment shown in Figure 4.

At first referring to Fig. 2, the present invention's foot-switch includes substantially: a switch base 10, a pedal 20 and two derailing switches 30; Wherein:

This switch base 10 is on a rectangular basically base plate 11, at one end form pre-sizing, the saturating empty switch enclosure 12 in top, on base plate 11, longitudinal extension direction along switch enclosure 12 is provided with the pivot suspension piece 13 integrally formed with the box wall, be provided with the pivot hole parallel 130 at pivot suspension piece 13 near the upper limb place with this lateral box wall, below pivot hole 130, be provided with a stepped hole 131 that can feed in the switch enclosure 12, the miner diameter end of this stepped hole 131 enters switch enclosure 12 by bottom circumferential lamella 132, this stepped hole is used for a catch bar 14 and is slided within it, catch bar 14 has a wide path 140 and a narrow footpath bar section 141, on 140 1 end faces of wide path, be provided with dimple 142 and go into a steel ball 143 in order to sliding sleeve, be exposed to side outside the switch enclosure 12, then be equipped with a spring 144 on the narrow footpath bar section 141, these spring 144 1 ends abut against the other end of wide path 140, an other end then is pressed against on the bottom circumferential lamella when bottom circumferential lamella 132 is passed in bar section 141 slips in narrow footpath, narrow footpath bar section 141 enters on the bar section in the switch enclosure 12 and is connected with a C shape spring clip 145, as the backstop of catch bar 14 when spring 144 restores.

The area of this pedal 20 basically with base plate 11 on be switch enclosure 12 occupied beyond area suitable, pedal can be tabular or has to 11 one-tenth suitably crooked curved arc shapes of base plate, it can be provided with some raised lines 21 with anti-skidding for trampling on face, on its back side, then be provided with a sagging wall 22 that pushes away, be formed with two otic placodes 23 in its two side ends, pivot 24 is installed in pedal 20 on the pivot suspension piece 13 by otic placode 23, and this pushes away wall 22 and just contacts with the steel ball 143 of catch bar 14 at that time.

This derailing switch 30 is formed with cross recess chamber 32 in rectangular haply housing 31 inside, corresponding to what longitudinal channels 320 was stretched in housing 31 outsides preceding hole seat 321 and metapore seat 322 arranged, collets 33 slide in this longitudinal channels 320, one end of collets 33 engages with the rod end flange 340 of a correcting bar 34, be with a spring 341 on the correcting bar 34, when with it when metapore seat 322 passes, this spring 341 will push away and make 340 pairs of collets of rod end flange 33 produce thrusts; Collets 33 other ends then engage with a citation rod 35, this citation rod 35 can slide in preceding hole seat 321, and the one C shape spring clip 350 of clamping thereon, make this citation rod 35 when correcting bar 34 promotes collets 33, be promoted a predetermined stroke and be subjected to stop, these collets 33 and correcting bar 34, being formed with correcting shrinkage pool 330 on the abutting end of citation rod 35 packs into for each corresponding rod end with priming shrinkage pool 331, to guarantee the continuity of action relationships, in collets 33, be provided with the slotted eye 332 that horizontal cross connects, vertical wall of this slotted eye 332 is provided with the locating pin 333 of projection in opposite directions, and vertically be provided with projection guide rail 334 on the bottom surface, two moving contact pin 36 with predetermined length are installed in the slotted eye 332, it is movable that the Design of length of moving contact pin becomes to make it to put into quadrature conduit 323, respectively be provided with a protruding contact 360 at moving contact pin two ends, be shaped on slip breach 362 on a locating slot 361 and the side in lamellar body central authorities, this locating slot 361 matches with locating pin 333, should slip breach 362 then just on guide rail 334, be provided with a spring 363 in two moving 36 of contact pin, the be positioned projection of groove 361 of this spring is located, and two moving contact pin are pushed against on the wall of slotted eye 332; Be provided with the static joining-pin of fixing with screw 37 38 in the both sides at these quadrature conduit 323 two ends, this static joining-pin 38 is bent angle shape approximately, one end enters in the quadrature conduit 323 and is posted by on its sidewall, be formed with four cornerites by the screw 37 securing other ends, these cornerites are designed to surround the pawl angle 381 of screw 37.

In the embodiment of Fig. 2, two derailing switches 30 in switch enclosure 12, have been installed, therefore the end that enters in the box at this catch bar 14 is fixed with a slurcam 146, the termination and the slurcam 146 of the citation rod 35 of two derailing switches 30 have the predetermined distance of positions, one does not contact with slurcam 146 when moving, another then has the pre-determined bit distance with slurcam 146, and its action routine is shown in figure three, and 4 groups of static joining-pins 38 in two derailing switches 30 are respectively with A ₁, A ₂And B ₁, B ₂Expression, therefore:

(I) slurcam 146 is at supplying position not, and moving contact pin 36 is with A ₁With B ₁Two groups of static joining-pin 38 contacts (the static joining-pin group at contact condition is marked with ⊙); Be to be phase one control.

The 146 beginning feedings of (II) slurcam make contact pin 36 break away from A ₁The group static joining-pin, and with A ₂Group static joining-pin contact (⊙), slurcam 146 just touches the citation rod 35 of B derailing switch 30, B when being ₁The group static joining-pin still is in contact condition (⊙); This is subordinate phase control.

(III) slurcam 146 continues feeding, but is not fed into the end, A ₂The group static joining-pin is still at contact condition (⊙), and B ₁The group static joining-pin is separating contacting state, because slurcam 146 is not fed into the end, makes B ₁, B ₂Two groups of static joining-pins all are in contactless state; Be to be phase III control.

(IV) slurcam 146 is fed into the end, at this moment the B of B derailing switch ₂The group static joining-pin enters contact condition (⊙), at this moment the A of A derailing switch ₂The group static joining-pin still remains on contact condition (⊙) certainly; This is the control of quadravalence section.

When hereat in switch enclosure 12, implementing with two derailing switches 30 of the present invention, can produce 2 * 2 times stage control program as mentioned above, but then needn't be when single derailing switch 30 is installed in the termination of catch bar 14 fixing slurcam 146, and catch bar 14 is got final product with capable contact of citation rod 35 Jing.Importantly, when this citation rod 35 is pushed away, the stroke system of collets 33 is determined by the decrement of the spring on the correcting bar 34 341, and when collets 33 in motion and during by stop, can absorbing by the compression deformation of the spring 363 that moves 36 of contact pin of moving 36 pairs of static joining-pins 38 of contact pin against pressure, cause any permanent damage distortion that produces because of acting force is too quickly and be unlikely, thus the constant lasting accuracy of its use that detracts.Meaning promptly, the collets 33 of the present invention's derailing switch 30 are in movement travel, it is damping (damping) effect that forward is subjected to two-level spring 341,363, and the contacting of moving contact pin 36 and static joining-pin 38, all the time all be difficult the stiff end of any point, remove so the accuracy error that causes thus can be kept away as bending.

That shown in Figure 4 is the embodiment that one group three derailing switches 30 arranged side by side and a single derailing switch 30 are installed in the switch enclosure 42 of switch base 40 of the present invention, these three derailing switches 30 fix by predetermined jump, there is the different distance of positions termination that is its citation rod 35 with slurcam 41, and it acts on shown in figure five:

(I) this slurcam 41 is in original (Original) position, and A, the B of its A, B and three derailing switches of C and C group all are in contact condition (⊙).

41 feedings of (II) slurcam touch citation rod 35 terminations of B derailing switch, and the A derailing switch is from A ₁Contact condition (⊙) is transferred to A ₂Contact condition (⊙) is so cause A ₂, B ₁With C ₁Be in contact condition.

(III) slurcam 41 continues feeding, makes the B of B derailing switch ₁With B ₂All throw off for two groups, but contact with the C derailing switch not yet, that is A ₂With C ₁Be in contact condition (⊙).

The 41 further feedings of (IV) slurcam make it to contact with citation rod 35 terminations of C derailing switch, at this moment B ₂Group has entered contact condition (⊙), and and A ₂, C ₁Be in contact condition together.

(V) slurcam 41 is further feeding again, makes C ₁With C ₂All throw off for two groups, therefore, A is only arranged ₂, B ₂Two groups are in contact condition (⊙).

(VI) is fed into the end with slurcam 41 at last, so A ₂, B ₂With C ₂Three groups all are in contact condition (⊙).

Therefore, when in switch enclosure 42, implementing with three derailing switches 30 of the present invention, can produce aforesaid 3! Inferior stage control formula.

And the static joining-pin 38 of aforementioned two embodiment is formed with four pawl angles 381 at screw 37 fixing ends, its purpose is to guarantee to be fixed by the contact that its fixing lead can obtain more than 3, and keep this lead firm contact betwixt, one can prevent that conventional structure from taking place because of pullling getting loose of being caused easily improperly, two can increase lead institute definitely effective osculatory, face of acquisition on static joining-pin 38.Moreover, for the action that pushes away 22 pairs of catch bars 14 of wall that makes pedal 20 keep consistently smooth along for the purpose of, be provided with rolling steel ball 143 at catch bar 14 with the end that pushes away wall 22 contacts, so, more can guarantee the continuity of relative motion therebetween.

In sum, the present invention's foot-switch, have in fact consistently safety action stable smooth along with effect accurately, can cooperate the rank of generating routineization to advance control again, show the progressive that has had the monobasic multioperation and implement, the real patent of invention condition that met with value on the industry.

Claims

1, a kind of foot-switch includes substantially: a switch base is formed with a switch enclosure with the installing derailing switch on it; One pedal is one to have the plate of automatic restorability, will connect action to the derailing switch transmission in the switch enclosure by a catch bar when it is jammed on; One switch cover is with the involution switch enclosure; It is characterized in that:

This switch apparatus has the housing that is formed with the cross recess chamber, in the one conduit, hold and place collets, these collets are headed on by a flexible member at this conduit direction one end, the other end then leans one and passes its shell wall, can do suitable displacement then by the citation rod of stop, on these collets and be provided with a horizontal cross slotted eye, adorn within it with two moving contact pin backup slotted eye walls for a flexible member, described moving contact pin is designed to put into the conduit orthogonal thereto with above-mentioned conduit, then is provided with static joining-pin in the both sides at these quadrature conduit two ends;

The structure of the above-mentioned composition of mat, when stepping on pedal, the effect by catch bar promotes citation rod, is can stablize freely to promote collets suitablely, and dress moving contact pin is within it carried out and alternately the connecting of static joining-pin.

2, by the described foot-switch of claim 1, it is characterized in that described static joining-pin is a kind of bent angle shape conductor piece, the one end enters the quadrature conduit to connect with moving contact pin, the other end then is fixed on the open side of groove chamber by screw, and this end of static joining-pin is formed with four cornerites, and these cornerites are designed to surround the pawl angle of screw.

3, by the described foot-switch of claim 1, it is characterized in that an end that is headed on by flexible member of described collets, can establish the correcting bar of a break-through derailing switch housing wallboard, make these collets can make positive movement with respect to this flexible member.

4, by the described foot-switch of claim 1, it is characterized in that to establish on the termination of the catch bar in described switch enclosure one with the catch bar quadrature and have the slurcam of predetermined length, and at the switch enclosure internal fixation some derailing switches are arranged, and the tip position of the citation rod of each derailing switch is arranged to slurcam the preposition distance is arranged.

5, by the described foot-switch of claim 1, it is characterized in that on described guide rod one precalculated position, being provided with a C shape spring clip to control its stroke.

6, by the foot-switch of claim 3, it is characterized in that the termination that described correcting bar and collets lean is a rod end flange, lean for the flexible member that wears thereon.

7, by claim 1 or 6 described foot-switchs, the abutting end that it is characterized in that described collets and citation rod, correcting bar is provided with the priming shrinkage pool and the correcting shrinkage pool is packed into for each corresponding rod end.

By the described foot-switch of claim 1, it is characterized in that in the slotted eye of described collets that 8, the sidewall that passive contact pin abuts against is provided with the locating pin of projection, and on the vertical bottom surface between two locating pins, be provided with the guide rail of projection.

9, by claim 1 or 8 described foot-switchs, it is characterized in that being formed with a locating slot cooperating with locating pin in described moving contact pin central authorities, and with a side of locating slot corresponding site on be formed with a slip breach and on guide rail, be beneficial to leading.

10, by any one the described foot-switch in the claim 1 to 6, it is characterized in that this catch bar has a wide path and a narrow footpath bar section, being provided with dimple on end face of wide path goes into for a steel ball sliding sleeve, be exposed to the switch enclosure outside, then be equipped with a spring on its narrow footpath bar section, be connected with a C shape spring clip on the precalculated position on the bar section in penetrating switch enclosure, as catch bar by the predetermined backstop of spring when the steel ball direction is passed.

11, by the described foot-switch of claim 7, it is characterized in that this catch bar has a wide path and a narrow footpath bar section, being provided with dimple on end face of wide path goes into for a steel ball sliding sleeve, be exposed to the switch enclosure outside, then be equipped with a spring on its narrow footpath bar section, be connected with a C shape spring clip on the precalculated position on the bar section in penetrating switch enclosure, as catch bar by the predetermined backstop of spring when the steel ball direction is passed.

12, by the described foot-switch of claim 8, it is characterized in that this catch bar has a wide path and a narrow footpath bar section, being provided with dimple on end face of wide path goes into for a steel ball sliding sleeve, be exposed to the switch enclosure outside, then be equipped with a spring on its narrow footpath bar section, be connected with a C shape spring clip on the precalculated position on the bar section in penetrating switch enclosure, as catch bar by the predetermined backstop of spring when the steel ball direction is passed.

13, by the described foot-switch of claim 9, it is characterized in that this catch bar has a wide path and a narrow footpath bar section, being provided with dimple on end face of wide path goes into for-steel ball sliding sleeve, be exposed to the switch enclosure outside, then be equipped with a spring on its narrow footpath bar section, be connected with a C shape spring clip on the precalculated position on the bar section in penetrating switch enclosure, as catch bar by the predetermined backstop of spring when the steel ball direction is passed.