CN2767994Y

CN2767994Y - Device for testing endurance life of electrical switch

Info

Publication number: CN2767994Y
Application number: CN 200420026399
Authority: CN
Inventors: 史长杰
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-04-16
Filing date: 2004-04-16
Publication date: 2006-03-29
Anticipated expiration: 2014-04-16

Abstract

The utility model relates to a device for testing endurance life of an electrical switch, which is designed to overcome a defect that the existing test device is only suitable for testing button type electrical switches; racks are in engagement installation at both sides of the spur gear which is alternatively rotated clockwise and counter clockwise; the racks alternatively move up and down. Different cramping tools are arranged on extension rods of the racks; accordingly, the utility model can test electrical switches of different structures; the racks adopt compound rack structures and a baffle plate and a limit switch are arranged, which enhances accuracy and reliability of the test.

Description

The viability test unit of electric switch

(1) technical field: the utility model relates to the reliability test of electric switch element, specifically belongs to the viability test unit of electric switch.

(2) background technology: electric switch is the often action of conversion Push And Release in use, to its permanance or testing requirements and inspection provision are arranged in national standard serviceable life.For implementing national standard, the test unit that needs corresponding Pass Test to require.Test unit of the prior art is as shown in Figure 1 and Figure 2: see Fig. 1, motor and speed reduction unit 1 by synchronous band power wheel 2, drive main shaft 3 and do directed rotation, and eccentric wheel 4 is housed on the main shaft, follow main shaft 3 rotations.Spring 6 and orienting lug 7 device transmission push rods 5 are passed through in eccentric wheel 4 belows, are installing on pedestal 9 by test switch 8 below the push rod 5, and are making the lower end of the button aligning push rod 5 of switch.See Fig. 1, Fig. 2, with eccentric wheel 4 rotations, push rod 5 periodically pumps, and the viability test periodically to carried out the action of Push And Release by the button of test switch 8, is carried out in the lower end of push rod 5.Because the eccentric throw of eccentric wheel 4 is definite values, single push rod 5 also can only move up and down, above-mentioned test unit only is fit to do the viability test of button electric switch, and the electric switch (as toggle switch, rocker switch, many grades of keyswitches etc.) that can not satisfy multiple version carries out the viability test.

(3) summary of the invention: the purpose of this utility model is to provide a kind of viability test unit that is applicable to the electric switch of multiple version.

The technical solution of the utility model is as follows:

Motor is connected with main drive shaft by gearing with speed reduction unit, it is characterized in that device is meshed on main drive shaft and driven shaft respectively driving gear and follower gear, on driven shaft, install spur gear, the both sides of spur gear and tooth bar engagement, tooth bar is positioned to install anchor clamps on the extension rod of tooth bar between the internal face and rail plate of gear case.Its further feature is: described tooth bar is superimposed by two tooth bar sheets, constitutes compound tooth bar, flexibly connect along tooth bar direction of motion between the two tooth bar sheets, between the two tooth bar sheets along tooth bar direction of motion device spring; On the described tooth bar postive stop baffle is installed, below postive stop baffle, is installed limit switch.

The utility model replaces forward and backward by spur gear, the tooth bar that drives its both sides replaces upper and lower motion, the various anchor clamps of device on the extension rod of tooth bar, can there be a plurality of execution bar controls to be carried out the conversion of Push And Release, thereby make the utility model be applicable to that the electric switch of multiple structure carries out the viability test by the relevant button of test switch.The utility model adopts compound tooth bar, installs postive stop baffle on tooth bar, the action that more makes tooth bar accurately, reliable.

(4) description of drawings:

Fig. 1 has electric switch viability test unit figure now;

Fig. 2 is that the A-A of Fig. 1 is to cut-open view;

Fig. 3 is the front elevation (wherein the gear case front face is cut open) of the utility model structure;

Fig. 4 is the vertical view (wherein bevel gear and gear case are analysed and observe) of the utility model structure;

Fig. 5 is the enlarged drawing of facing of the utility model tooth bar;

Fig. 6 is that the B-B of the utility model Fig. 5 is to cut-open view.

(5) embodiment:

See Fig. 3, motor 1 is connected with main shaft 4 by pulley gear 3 with speed reduction unit 2.See Fig. 4, on main drive shaft 4 and driven shaft 20, install intermeshing drive bevel gear 18 and driven wheel of differential 19 respectively, driven shaft 20 by bearing arrangement in the wall of gear case 9, gear case 9 is installed on frame, in gear case 9, install spur gear 11 on the driven shaft 20, in the engagement of the both sides of spur gear 11

tooth bar

8 and 10 is installed,

tooth bar

8 and 10 difference location and installation are between the internal face and rail plate 21,22 of gear case 9.See Fig. 3, install anchor clamps 15 respectively on

tooth bar

8 and 10 the extension rod 14.Among Fig. 3, Fig. 4,5 and 12 are respectively the bearing spider of supporting spindle 4.See Fig. 5 and Fig. 6,

tooth bar

8 and 10 is respectively compound tooth bar, both are superimposed by

tooth bar sheet

23,24 respectively, upper and lower position at tooth bar sheet 24 has elongated hole 25 along tooth bar direction of motion, device screw 26 on the hole 25, screw 26 passes hole 25 and is fastenedly connected with tooth bar sheet 23, and loose fit between screw 26 and the hole 25 flexibly connects along tooth bar direction of motion thereby make between tooth bar sheet 23 and 24.See Fig. 5 and Fig. 6, middle part at tooth bar sheet 24 has bar hole 27 along tooth bar direction of motion, device spring fixed block 28 in the hole 27, spring fixed block 28 is fixedlyed connected in the riveted mode with tooth bar sheet 23, mounting rod is extended in the bottom of spring fixed block 28, installs spring 13 on the mounting rod in bar hole 27.14 is the extension rod of tooth bar among Fig. 5 and Fig. 6, and 11 is the spur gear that meshes with tooth bar among Fig. 5.

See Fig. 3 and Fig. 5, gear 11 has certain interval with the engagement of

tooth bar

8 and 10, the utility model replaces forward and backward drive

tooth bar

8 and 10 by gear 11 and alternately does upper and lower motion, the performance of this gap is more obvious, with the rotating that makes the commutation that moves up and down of saw blade and the gear not strict synchronism that commutates, influence the accuracy of electric switch test.See Fig. 5, Fig. 6, the utility model is designed to compound tooth bar with

tooth bar

8 and 10, when the gap appears in wheel and rack, because

tooth bar sheet

24 and 23 flexibly connects along tooth bar direction of motion, the spring fixed block is fixedlyed connected with tooth bar sheet 23, spring 13 is installed in the bar hole 27 of tooth bar sheet 24, its upper end contacts is fixed in fixed block 28, under the effect of spring 13, make to produce between the tooth of tooth bar sheet 24 and tooth bar sheet 23 and grind one's teeth, the shift amount of grinding one's teeth equals the gap value of wheel and rack, makes gear 11 just, counter-rotating whenever with all tightly interlocks of

tooth bar

8 or 10, thereby make switch accurately carry out in test the "on" and "off" conversion.See Fig. 1, postive stop baffle 7 is installed respectively on

tooth bar

8 and 10, limit switch 6 is installed below baffle plate, make

tooth bar

8 and 10 upper and lower amplitudes onside, further the reliability of warranty test.17 is the test specimen support platform among Fig. 1, and frame of broken lines 16 expressions are by the test switch.Electrical control among Fig. 1 connects by prior art.

Claims

1. the viability test unit of electric switch, motor is connected with main drive shaft by gearing with speed reduction unit, it is characterized in that device is meshed on main drive shaft and driven shaft respectively driving gear and follower gear, on driven shaft, install spur gear, mesh with tooth bar respectively the both sides of spur gear, tooth bar is positioned to install anchor clamps on the extension rod of tooth bar between the internal face and rail plate of gear case.

2. press the viability test unit of the described electric switch of claim 1, it is characterized in that described tooth bar is superimposed by two tooth bar sheets, constitute compound tooth bar, flexibly connect along tooth bar direction of motion between the two tooth bar sheets, between the two tooth bar sheets along tooth bar direction of motion device spring.

3. press the viability test unit of the described electric switch of claim 2, it is characterized in that having elongated hole along tooth bar direction of motion at the upper and lower position of the first tooth bar sheet, install screw on the elongated hole, loose fit between the two, described screw passes elongated hole and the second tooth bar sheet is fastenedly connected; Middle part at the first tooth bar sheet has bar hole along tooth bar direction of motion, device spring fixed block in the hole, the spring fixed block is fixedlyed connected with the second tooth bar sheet, in described bar hole on the extension rod of spring fixed block mounting spring.

4. by the viability test unit of claim 1 or 2 described electric switches, it is characterized in that on described tooth bar, postive stop baffle being installed, below postive stop baffle, install limit switch.