CN201532911U

CN201532911U - Snap-action manual reset travel switch

Info

Publication number: CN201532911U
Application number: CN2009201812595U
Authority: CN
Inventors: 张水坤
Original assignee: Suns Electric (Zhangzhou) Co Ltd
Current assignee: Suns Electric (Zhangzhou) Co Ltd
Priority date: 2009-11-02
Filing date: 2009-11-02
Publication date: 2010-07-21
Anticipated expiration: 2019-11-02

Abstract

The utility model discloses a snap-action manual reset travel switch, which mainly comprises a casing body, a round-head plunger, a connecting rod and a snap-action movable mechanism. The snap-action movable mechanism mounted inside the casing body consists of a movable contact frame, a movable block, a movable rod, movable rod springs and swing copper sheets; the movable contact frame is arranged on the movable block; the middle portion of the movable rod transversely movably penetrates into the movable block; the movable rod springs respectively penetrate into transverse blind holes of the movable rod; two ends of each swing copper sheet are respectively abutted to two through holes arranged on the inner wall of the movable rod and the inner wall of the movable block; the outer end of the connecting rod is connected to the round-head plunger; and the inner end of the connecting rod is connected and sleeved onto the movable rod. Two different stations of the movable rod are realized by pushing through the swing copper sheets abutted to two ends of the movable rod. As a reset mechanism of the structure is not provided with wear parts of sliding friction, mechanical life can reach more than ten million times, and work is safer and more reliable.

Description

Speedy moving type hand-reset travel switch

Technical field

The utility model relates to a kind of safety protection switch, particularly relates to a kind of speedy moving type hand-reset travel switch.

Background technology

Hand-reset travel switch (as shown in Figure 1) should meet low tension switch GB14048.5-2001, is installed on the equipment that safeguard protection need be arranged.Because the manual reset switch (as shown in Figure 1) that uses in the market majority is the slow motion formula, and have the hand-reset button, have the following disadvantages: switch is hand-reset button 1 ' wearing and tearing easily when work, and the switch resetting device was lost efficacy, and generally can only reach below 100,000 times mechanical endurance; Owing to have hand-reset button 1 ', be installed in and occur the phenomenon that interferes with machine on the machine.

The utility model content

The purpose of this utility model is to provide a kind of simple in structure, with low cost, reliability is high, the life-span is long speedy moving type hand-reset travel switch.

For achieving the above object, technical solution of the present utility model is:

The utility model is a kind of speedy moving type hand-reset travel switch, and it mainly is made up of housing, round end plunger, connecting rod and snap-action movable device; Described snap-action movable device is installed in the housing, and it is made up of moving contact frame, movable block, motion bar, motion bar spring, swing copper sheet; On forward and backward of movable block, be respectively equipped with the moving contact frame that can contact with forward and backward contact; The middle part of motion bar is set in the movable block along horizontal activity, and the edge laterally offers the blind hole of two symmetries on motion bar; Two motion bar springs are located in this horizontal blind hole respectively and its two ends lean respectively in the blind hole bottom surface; Described swing copper sheet has two, and the two ends of swing copper sheet lean respectively on the spring base of motion bar inwall and on the two through hole of movable block inwall; The outer end of described connecting rod connects the round end plunger, and the inner adapter sleeve of connecting rod is connected on the motion bar.

2, speedy moving type hand-reset travel switch according to claim 1, it is characterized in that: it also comprises headstock, sealing shroud and fairlead; Described fairlead is socketed on the connecting rod, and its two ends lean respectively on the cascaded surface of snap-action movable device motion bar and the inner face of round end plunger; Described headstock is installed in the connecting rod traversing through end of housing; The connecting rod that described sealing shroud is socketed in housing passes between end face and the fairlead and is positioned at the headstock inner chamber.

After adopting such scheme; motion bar in the utility model snap-action movable device is to realize that by the swing copper sheet ejection that leans on its two ends motion bar is in two different stations of protection operating state and normal condition; because the resetting device of this structure does not have the wearing terrain of sliding friction; can reach mechanical endurance more than 10,000,000 times, it is more safe and reliable to work.In addition, because the hand-reset button is not with at back of the present utility model, better be fit to the installation of machinery equipment.

Below in conjunction with the drawings and specific embodiments the utility model is further described.

Description of drawings

Fig. 1 commonly uses the hand-reset travel switch;

Fig. 2 is a forward cutaway view of the present utility model;

Fig. 3 is a vertical view of the present utility model;

Fig. 4 is the axonometric drawing of the utility model snap-action movable device;

Figure 51, Figure 52, Figure 53 are normal condition figure of the present utility model, equilibrium state diagram, guard mode figure.

Embodiment

As Fig. 2, shown in Figure 3, the utility model is a kind of speedy moving type hand-reset travel switch, and it mainly is made up of housing 1, round end plunger 2, connecting rod 3, headstock 4, sealing shroud 5, fairlead 6, elastic cylindrical pin 7, snap-action movable device 8, guiding bull stick 9.

With reference to shown in Figure 3, described snap-action movable device 8 is installed in the housing 1 as Fig. 4, and it is made up of moving contact frame 81, movable block 82, motion bar 83, motion bar spring 84, swing copper sheet 85.On forward and backward of movable block 82, be respectively equipped with the moving contact frame 81 that can contact with forward and backward

contact

91,92; The middle part of motion bar 83 is set in the movable block 82 along horizontal activity, and the edge laterally offers the blind hole of two symmetries on motion bar 83.Two motion bar springs 84 are located in this horizontal blind hole respectively and its two ends lean respectively in the blind hole bottom surface.Described swing copper sheet 85 has two, and the two ends of swing copper sheet 85 lean respectively on the spring base 831 of motion bar 83 inwalls and on the two through hole 821 of movable block 82 inwalls.When motion bar 83 moved downward, spring base 831 was by the effect inwardly compression down of swing copper sheet 85.

As shown in Figure 2, the outer end of described connecting rod 3 connects round end plunger 2, and the inner adapter sleeve of connecting rod 3 is connected on the motion bar 83.Described fairlead 6 is socketed on the connecting rod 3, and its two ends lean respectively on the cascaded surface of the motion bar 83 of snap-action movable device 8 and the inner face of round end plunger 2; Described headstock 4 is installed in connecting rod 83 traversing through end of housing 1; The connecting rod 83 that described sealing shroud 5 is socketed in housing 1 passes between end face and the fairlead 6 and is positioned at headstock 4 inner chambers.Described elastic cylindrical pin 7 radially is set on the round end plunger 2 and can penetrates short slot 41 (as shown in Figure 3) on the headstock 4.

Operation principle of the present utility model:

With reference to shown in Figure 3, normally-closed contact of the present utility model is forced the disjunction function, and is inoperative in normal operation, just plays the disjunction effect when the excessive switch silver point of electric current is bonded together as Fig. 4.

When external force by round end plunger 2, connecting rod 3, motion bar 83 is moved downward, when motion bar 83 operation 3 millimeter, the inclined-plane of motion bar 83 just in time pushes up the working face of guiding bull stick 9.Guiding bull stick 9 rotates, and the cambered surface of guiding bull stick 9 is pushed up moving contact frame 81, makes moving contact frame 81 and switch back contact 92 force to separate.

The utility model speedy moving type hand-reset travel switch has two operating states.Shown in Figure 51, be the normal condition of switch, switch front contact 91 disconnects switch back contact 92 closures; Figure 53 is the protection operating state of switch, switch front contact 91 closures, and switch back contact 92 disconnects.Figure 52 is poised state for the theoretical balance point of switch movable device.

When equipment breaks down; joystick by equipment drives 2 actions of round end plunger; switch is transformed into poised state by normal condition when stroke reaches 2.5 ± 0.3mm; under the effect of motion bar spring 84, jump immediately and be protection operating state (shown in Figure 53), controllable device parking, warning.After the fault of remover apparatus, hand-reset the utility model again during hand-reset is pulled out round end plunger 2 and is got final product (shown in Figure 51), and equipment just can reuse.

The above, it only is the utility model preferred embodiment, so can not limit the scope that the utility model is implemented with this, i.e. the equivalence of doing according to the utility model claim and description changes and modifies, and all should still belong in the scope that the utility model patent contains.

Claims

1. speedy moving type hand-reset travel switch, it is characterized in that: it mainly is made up of housing, round end plunger, connecting rod and snap-action movable device; Described snap-action movable device is installed in the housing, and it is made up of moving contact frame, movable block, motion bar, motion bar spring, swing copper sheet; On forward and backward of movable block, be respectively equipped with the moving contact frame that can contact with forward and backward contact; The middle part of motion bar is set in the movable block along horizontal activity, and the edge laterally offers the blind hole of two symmetries on motion bar; Two motion bar springs are located in this horizontal blind hole respectively and its two ends lean respectively in the blind hole bottom surface; Described swing copper sheet has two, and the two ends of swing copper sheet lean respectively on the spring base of motion bar inwall and on the two through hole of movable block inwall; The outer end of described connecting rod connects the round end plunger, and the inner adapter sleeve of connecting rod is connected on the motion bar.

2. speedy moving type hand-reset travel switch according to claim 1, it is characterized in that: it also comprises headstock, sealing shroud and fairlead; Described fairlead is socketed on the connecting rod, and its two ends lean respectively on the cascaded surface of snap-action movable device motion bar and the inner face of round end plunger; Described headstock is installed in the connecting rod traversing through end of housing; The connecting rod that described sealing shroud is socketed in housing passes between end face and the fairlead and is positioned at the headstock inner chamber.