CN219144007U - Improved structure of sealing travel control switch - Google Patents

Abstract

The utility model provides an improvement structure of sealed travel control switch, relate to a control switch, including the cavity, the fixed contact that has first wiring foot, the shell fragment that has the movable contact, the second wiring foot, the push rod, the pressurized shell fragment, the top is felt to the top, adjusting screw, be provided with the pendulum rod, one of them one end swing of pendulum rod is connected in the appearance chamber department of bow-shaped energy storage shell fragment middle part top, the other end and the contact connecting rod other end of pendulum rod are connected, the pendulum rod can be followed the other end of pendulum rod and the relative swing of tie point that the contact connecting rod other end is connected with the contact connecting rod other end, the top of push rod is leaned on the contact connecting rod other end department. Compared with the prior art, the utility model has the advantages of small volume, simple structure, low manufacturing cost, convenient switch-off and switch path stroke adjustment and accurate control.

Description

Improved structure of sealing travel control switch

Technical Field

The utility model relates to a control switch, in particular to a spring sheet type travel control switch.

Background

The existing spring sheet type travel control switch comprises an arc-shaped energy storage spring sheet, a movable contact connecting rod driven by the arc-shaped energy storage spring sheet and a push rod driven by the spring sheet, wherein a top is arranged on the spring sheet, the push rod drives the movable contact connecting rod to swing up and down with a movable contact on the movable contact connecting rod, one end of the arc-shaped energy storage spring sheet is leaned against the movable contact connecting rod at the movable contact, and the other end of the arc-shaped energy storage spring sheet is positioned on a certain positioning point; when the switch works, the top drives the elastic sheet to swing up and down, the elastic sheet drives the push rod to move up and down, the push rod drives the movable contact connecting rod to swing up and down with the movable contact on the movable contact connecting rod, when the movable contact connecting rod passes over the locating point upwards, the arc-shaped energy storage elastic sheet is pulled to store energy under the action of the movable contact connecting rod, at the moment, the arc-shaped energy storage elastic sheet can drive the movable contact to move upwards, so that the arc-shaped energy storage elastic sheet opens to release energy storage, and simultaneously drives the movable contact connecting rod to swing up, and the movable contact rapidly leaves the fixed contact below along with the upward movement of the movable contact, thereby realizing the purpose of switching off the switch; when the movable contact connecting rod passes through the positioning point downwards, the arc-shaped energy storage elastic sheet opens to release energy storage, and drives the movable contact connecting rod to swing downwards, so that the movable contact is rapidly leaned against the fixed contact below along with the downward movement of the movable contact, and the purpose of closing the switch is realized; when the movable contact is rapidly separated from the lower fixed contact, if the movable contact is not restrained, the movable contact is kept away from the fixed contact, so that the movable contact needs to be re-leaned against the lower fixed contact, the movable contact connecting rod moves downwards for a long distance so as to cross the positioning point again, the opening and closing actions of the switch are caused, the distance of the upward and downward movement of the ejector is required to be large, the prior art is determined by the structure of the movable contact, the upward movement distance of the movable contact can be limited only at a fixed position, the upward movement distance of the movable contact cannot be regulated, and the upward and downward movement distance of the ejector for controlling the opening and closing of the switch is regulated, so that the purpose of opening and closing of the micro-motion control switch is realized.

Patent CN 201410749763.6 discloses a pressure travel switch working in a closed manner, comprising a base with a cavity, a cover fixed on the mouth of the cavity, a pressed spring piece with one end connected to the cover, a fixed contact fixed on one side of the cavity, a spring piece with a contact fixed on the other side of the cavity, an insulating push rod sliding through the cover, one end of the insulating push rod is connected to the pressed spring piece, the other end of the insulating push rod leans against the spring piece, the fixed contact comprises a conductive plate with a contact, a binding post connected with the conductive plate and arranged outside the base, the spring piece is connected with a binding post arranged outside the base, the contact of the spring piece always leans against the contact of the fixed contact, the spring piece comprises a contact connecting rod and an arched energy storage spring piece, the contact is arranged at one end of the contact connecting rod, the other end of the contact connecting rod is fixed on the binding post, the locating point of the arched energy storage elastic sheet is positioned at the middle part of the contact connecting rod, the other end of the insulating push rod leans against the contact connecting rod between the locating point and the binding post, thus, the fixed contact, the elastic sheet with the contact fixed on the other side of the containing cavity are sealed in the containing cavity, meanwhile, the insulating push rod which passes through the wall of the containing cavity and the adjusting screw which passes through the wall of the containing cavity and is used for controlling the closing stroke of the switch are not obstructed and directly reach the back of the contact connecting rod and the contact respectively, thereby conveniently adjusting the position of the pressure sensing top by adjusting the moving distance of the pressed elastic sheet and the insulating push rod to adjust the opening stroke of the switch and adjusting the closing stroke of the switch by adjusting the distance from the screw to the contact. The structure is characterized in that the insulation push rod is positioned between the positioning point and the binding post, meanwhile, the insulation push rod needs to be separated from the binding post for effective response, so that the insulation push rod can push the contact connecting rod to swing without great pressure, and therefore, the contact connecting rod is necessarily longer in length, the whole pressure travel switch is large in size, the use of the pressure travel switch is limited, and the manufacturing cost is high. In addition, in the technology, as the distance between the movable contact and the fixed contact is constant, the opening/closing stroke of the regulating switch and the opening/closing stroke of the switch are realized by regulating the positioning point of the arched energy storage elastic piece, and the opening/closing stroke of the switch are influenced simultaneously when the positioning point of the arched energy storage elastic piece is regulated, so that the opening/closing stroke of the switch and the opening/closing stroke of the switch are required to be regulated, and the regulation is complicated.

Disclosure of Invention

The utility model aims to provide an improved structure of a sealing travel control switch, which has the advantages of small volume, simple structure and low manufacturing cost, is convenient to adjust the circuit breaking of the switch and the passage travel of the switch, and can realize accurate control.

The utility model is realized by the method, which comprises a cavity, a fixed contact arranged at the bottom of the cavity and provided with a first wiring pin penetrating out of the upper part of the cavity, an elastic piece arranged in the cavity and provided with a movable contact positioned above the fixed contact, a second wiring pin penetrating out of the cavity from the upper part, a push rod driving the elastic piece and penetrating out of the cavity from the lower part, a pressed elastic piece arranged below the cavity and driving the push rod, a susceptor arranged on the pressed elastic piece, wherein the elastic piece comprises a contact connecting rod and an arched energy storage elastic piece, the movable contact is arranged at one end of the contact connecting rod, one end of the arched energy storage elastic piece is positioned on the contact connecting rod at the movable contact, the other end of the arched energy storage elastic piece is a positioning point and is communicated with the second wiring pin.

When the switch works, the sensing top moves up and down to drive the pressed elastic piece to swing up and down, the pressed elastic piece drives the push rod to move up and down, the push rod drives the other end of the contact connecting rod to move up and down, when a connecting line from the other end of the contact connecting rod to one end of the arc-shaped energy storage elastic piece upwards passes over a locating point, under the action of the arc-shaped energy storage elastic piece, the contact connecting rod swings upwards along a connecting point where the other end of the swing rod is connected with the other end of the contact connecting rod, so that the movable contact leaves the fixed contact, and the disconnection of the switch is realized; when a connecting line from the other end of the contact connecting rod to one end of the arched energy storage elastic piece passes through a locating point downwards, the contact connecting rod swings downwards along a connecting point where the other end of the swinging rod is connected with the other end of the contact connecting rod under the action of the arched energy storage elastic piece, so that the movable contact is abutted against the fixed contact, and the switch is closed; when the breaking travel of the switch is required to be regulated, the position of the sensing top on the pressed elastic sheet is regulated up and down, and the larger the downward moving distance of the sensing top is, the smaller the breaking travel of the switch is, and the larger the reverse is; when the closing stroke of the switch is required to be adjusted, the distance between the adjusting screw and the movable contact is adjusted up and down, and the larger the distance of the adjusting screw moving downwards is, the smaller the closing stroke of the switch is, and otherwise, the larger the distance is. Because the disconnection stroke of the regulating switch and the closing stroke of the regulating switch are respectively carried out and do not interfere with each other, the purpose of accurate control can be realized, for example, when the pressure of the pressure cooker needs to be accurately controlled, when the pressure reaches the set pressure, the disconnection stroke of the regulating switch and the closing stroke of the regulating switch are respectively carried out, so that the change range of pressure lifting (reflected in the deformation range of the cooker) after the pressure reaches the set value can be controlled in a tiny change range, meanwhile, the regulation of the pressure reaching the set value can be finished firstly, then the regulation of the change range of the pressure lifting after the pressure reaching the set value is finished, the regulation is convenient, and the purpose of accurate control is easy to realize.

The swing rod is adopted, so that no large driving force is needed, the contact connecting rod can move up and down along the connection point of the contact connecting rod and the swing rod, the on-off reliability of the switch is guaranteed, meanwhile, the length of the contact connecting rod is effectively shortened, and the small containing cavity can also contain the elastic sheet component, so that the purposes of small size, simple structure and low manufacturing cost are achieved.

Preferably, the second wire connecting pin is in an inverted Z shape, the upward vertical part of the inverted Z-shaped second wire connecting pin upwards penetrates out of the accommodating cavity from the upper part of the middle part of the arched energy storage elastic piece, the other end of the arched energy storage elastic piece is connected to the downward vertical part of the inverted Z-shaped second wire connecting pin, and the connection point of the arched energy storage elastic piece and the downward vertical part of the inverted Z-shaped second wire connecting pin is a positioning point.

The inverted Z-shaped second wire connecting pin is adopted, so that the positioning points of the arched energy storage elastic pieces are conveniently arranged, and the assembly and the manufacture of products are convenient.

Preferably, the swing rod is in an inverted L shape, the free end of the transverse part of the inverted L-shaped swing rod is hooked on the upward vertical part of the inverted Z-shaped second wiring pin, and the free end of the vertical part of the inverted L-shaped swing rod bypasses the downward vertical part of the inverted Z-shaped second wiring pin and is hooked on the other end of the contact connecting rod.

The inverted L-shaped swing rod is adopted, so that the connection between the swing rod and the contact connecting rod is facilitated, and the assembly and the manufacture of products are facilitated.

Compared with the prior art, the utility model has the advantages of small volume, simple structure, low manufacturing cost, convenient switch-off and switch path stroke adjustment and accurate control.

Drawings

FIG. 1 is a schematic structural view (without a cover) of an improved structure of the sealing travel control switch of the present utility model;

FIG. 2 is a front view of a cover of the improved construction of the sealed travel control switch of the present utility model;

FIG. 3 is a top view of the contact link of FIG. 1;

FIG. 4 is a right side view of the first pin of FIG. 1;

FIG. 5 is a left side view of the second pin of FIG. 1;

FIG. 6 is a bottom view of the arcuate stored energy dome of FIG. 1;

FIG. 7 is a top view of the pendulum of FIG. 1;

fig. 8 is a top view of the pressed spring of fig. 1.

Description of the figure: 1. a cavity; 2. a first wire connecting pin; 201. a first wing; 3. a fixed contact; 4. a movable contact; 5. a spring plate; 501. a contact link; 5011. a notch; 502. an arcuate energy storage spring; 5021. a T-shaped structure; 6. a second wire connecting pin; 601. an upward vertical portion; 6011. a clamping hole; 602. a downward vertical portion; 6021. a bayonet; 603. a second wing; 7. a push rod; 8. a pressed spring plate; 801. third wing 801; 9. a feeling top; 10. an adjusting screw; 11. swing rod; 1101. a lateral portion; 1102. a free end; 1103. a vertical portion; 1104. a hook; 1105. a middle part; 12. a first insert groove; 13. a second embedded groove; 14. a third embedded groove; A. positioning points; B. the connection point.

Detailed Description

The improved structure of the sealing travel control switch of the present utility model will now be described in further detail with reference to the accompanying drawings and examples:

as shown in fig. 1, the device comprises a cavity 1, a fixed contact 3 arranged at the inner bottom of the cavity 1 and provided with a first wire connecting pin 2 penetrating out of the upper side of the cavity 1, a spring piece 5 arranged in the cavity 1 and provided with a movable contact 4 positioned above the fixed contact 3, a second wire connecting pin 6 penetrating out of the cavity 1 from the upper side, a push rod 7 driving the spring piece 5 and penetrating out of the cavity 1 from the lower side, a pressed spring piece 8 driving the push rod 7 arranged below the cavity 1, a sensing top 9 arranged on the pressed spring piece 8, an adjusting screw 10 penetrating into the cavity 1 from the upper side of the cavity 1 and capable of adjusting the moving distance of the limited braking contact 4, wherein the spring piece 5 comprises a contact connecting rod 501, an arc-shaped energy storage spring piece 502, the movable contact 4 is arranged at one end of the contact connecting rod 501, one end of the arc-shaped energy storage spring piece 502 is positioned on the contact connecting rod 501 at the movable contact 4 (as shown in fig. 6, the two ends of the arc-shaped energy storage elastic sheet 502 are in a T-shaped structure 5021, as shown in fig. 3, a notch 5011 is arranged at one end of the contact connecting rod 501, the T-shaped structure 5021 at one end of the arc-shaped energy storage elastic sheet 502 is clamped on the notch 5011 at one end of the contact connecting rod 501), the other end of the arc-shaped energy storage elastic sheet 502 is a positioning point A and is communicated with the second wiring pin 6, the arc-shaped energy storage elastic sheet is characterized in that a swinging rod 11 is arranged, one end of the swinging rod 11 is connected to the position of the containing cavity 1 above the middle part of the arc-shaped energy storage elastic sheet 502 in a swinging manner, the other end of the swinging rod 11 is connected with the other end of the contact connecting rod 501, the swinging rod 11 and the contact connecting rod 501 can swing relatively along the connecting point B at which the other end of the swinging rod 11 is connected with the other end of the contact connecting rod 501, the top of the pushing rod 7 leans against the other end of the swinging rod 11 or the other end of the contact connecting rod 501, and the adjusting screw 10 is positioned right above the movable contact 4.

Preferably, the second wire connecting pin 6 is in an inverted Z shape, the upward vertical portion 601 of the inverted Z-shaped second wire connecting pin 6 passes through the cavity 1 from the upper part of the middle of the arcuate energy storage elastic sheet 502, the other end of the arcuate energy storage elastic sheet 502 is connected to the downward vertical portion 602 of the inverted Z-shaped second wire connecting pin 6 (as shown in fig. 5, the downward vertical portion 602 of the second wire connecting pin 6 is provided with a bayonet 6021, the T-shaped structure 5021 of the other end of the arcuate energy storage elastic sheet 502 is clamped on the bayonet 6021), and the connection point of the arcuate energy storage elastic sheet 502 and the downward vertical portion 602 of the inverted Z-shaped second wire connecting pin 6 is a positioning point a.

Preferably, the swing link 11 is in an inverted L shape, the free end of the transverse portion 1101 of the inverted L-shaped swing link 11 is hooked on the upward vertical portion 601 of the inverted Z-shaped second wire connecting pin 6 (as shown in fig. 5, a detent hole 6011 is provided on the upward vertical portion 601 of the second wire connecting pin 6, as shown in fig. 7, the free end 1102 of the transverse portion 1101 of the inverted L-shaped swing link 11 is in a T shape, and the free end 1102 of the inverted L-shaped swing link is snapped on the detent hole 6011), as shown in fig. 1 and 7, after the free end of the vertical portion 1103 of the inverted L-shaped swing link 11 bypasses the downward vertical portion 602 of the inverted Z-shaped second wire connecting pin 6, the free end of the inverted L-shaped swing link 1103 is hooked on the other end of the contact link 501 by a hook 1104 bent at 90 degrees.

Preferably, the middle 1105 of the lateral portion 1101 of the inverted L-shaped pendulum 11 is dumbbell-shaped. In this way, the lateral portion 1101 of the inverted-L-shaped swing link 11 is easily elastically bent at the middle portion so as to exert a downward pressure on the other end of the contact link 501 to maintain contact with the push rod 7.

Preferably, the cavity 1 comprises a cavity 101 with an opening on the front side and a cover 102, wherein a first embedded groove 12, a second embedded groove 13 and a third embedded groove 14 which respectively correspond to the first wiring pin 2, the second wiring pin 6 and the pressed elastic piece 8 are arranged on the side wall of the cavity 101, and the first wiring pin 2, the second wiring pin 6 and the pressed elastic piece 8 are embedded into the first embedded groove 12, the second embedded groove 13 and the third embedded groove 14 from the side surface respectively, and then are positioned and fixed through the cover 102 with the opening on the front side. In this way, after the preassembled first terminal pin 2 with the fixed contact 3, the preassembled second terminal pin 6, the spring plate 5 with the movable contact 4, the swing rod 11 and the push rod 7 are installed in the cavity 101, the cover 102 is covered, and then the pressed spring plate 8 and the adjusting screw 10 are installed, the assembly is completed, so that the manufacturing process is simple and convenient, and the production efficiency is high.

As shown in fig. 4, 5 and 8, the first wings 201 are disposed on two sides of the first terminal pin 2, the second wings 603 are disposed on two sides of the second terminal pin 6, the third wings 801 are disposed on two sides of the pressed spring 8, and the corresponding cavities 101 and the cover 102 are provided with positioning slots (not shown in the drawings). In this way, the first terminal pin 2, the second terminal pin 6 and the pressed elastic sheet 8 are positioned on the accommodating cavity 1 through the positioning slot and the wing.

Claims (6)

1. The utility model provides an improvement structure of sealed travel control switch, including the cavity, the fixed contact that sets up in the cavity bottom have the first wiring foot that wears out the cavity top outside, the shell fragment that sets up in the cavity that has the movable contact that is located the fixed contact top, wear out the second wiring foot outside the cavity from above, drive the shell fragment and wear out the push rod outside the cavity from below, the pressurized shell fragment of drive push rod that sets up in the cavity below, the impression top that sets up on the pressurized shell fragment, the shell fragment includes the contact connecting rod, the bow-shaped energy storage shell fragment, the movable contact sets up in one of them end of contact connecting rod, one of them end of bow-shaped energy storage shell fragment is located the contact connecting rod of movable contact department, the other end of bow-shaped energy storage shell fragment is the setpoint and communicates with the second wiring foot, a serial communication, wherein, the pendulum rod one end of which swings and the contact connecting rod other end is connected with the contact connecting rod other end, the pendulum rod and contact connecting rod other end relatively swing along the tie point that the pendulum rod other end and contact other end are connected, the top of push rod leans on the other end of pendulum rod or contact other end department of contact, be provided with from cavity top and wear out the movable contact point adjusting screw and move forward in the movable contact.

2. The improvement of a sealed travel control switch according to claim 1, wherein the second leg is inverted Z-shaped, an upward vertical portion of the inverted Z-shaped second leg passes out of the cavity from above the middle of the arcuate energy storage spring, the other end of the arcuate energy storage spring is connected to a downward vertical portion of the inverted Z-shaped second leg, and a connection point of the arcuate energy storage spring and the downward vertical portion of the inverted Z-shaped second leg is a positioning point.

3. The improvement of the sealing stroke control switch according to claim 1 or 2, wherein the swing link is in an inverted L shape, and a free end of a lateral portion of the inverted L-shaped swing link is hooked on an upward vertical portion of the inverted Z-shaped second terminal pin, and a free end of the vertical portion of the inverted L-shaped swing link is hooked on the other end of the contact link after bypassing the downward vertical portion of the inverted Z-shaped second terminal pin.

4. The improvement of a sealing stroke control switch as recited in claim 3 wherein the middle of the lateral portion of the inverted L-shaped rocker is dumbbell-shaped.

5. The improvement of the sealing travel control switch according to claim 1, 2 or 4, wherein the cavity comprises a cavity and a cover, the front side of which is open, a first embedded groove, a second embedded groove and a third embedded groove which are respectively corresponding to the first wire connecting pin, the second wire connecting pin and the pressed spring piece are arranged on the side wall of the cavity, and the first wire connecting pin, the second wire connecting pin and the pressed spring piece are respectively embedded into the first embedded groove, the second embedded groove and the third embedded groove from the side surface and then are positioned and fixed through the cover, the cover is arranged at the opening part of the front side surface.

6. The improvement of a sealing travel control switch according to claim 5, wherein first wings are provided on both sides of the first terminal pin, second wings are provided on both sides of the second terminal pin, third wings are provided on both sides of the pressed spring, and positioning slots are provided on the corresponding cavities and covers.

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