CN2433728Y

CN2433728Y - Relay constituting of regulating connecting pressure gap

Info

Publication number: CN2433728Y
Application number: CN 00243809
Authority: CN
Inventors: 吴颂仁
Original assignee: Song Chuan Precision Co Ltd
Current assignee: Song Chuan Precision Co Ltd
Priority date: 2000-07-24
Filing date: 2000-07-24
Publication date: 2001-06-06
Anticipated expiration: 2010-07-24

Abstract

The utility model relates to a relay constituting a regulating connecting pressure gap. The utility model is proposed for providing a relay which can keep connection points in an optimum electrical connection effect and has the advantages of high rate of products meeting standards, low cost and long service life. The relay comprises a base which forms a containing chamber on the back end, a switch part which is assembled on the front end of the base, a magnetic pole member which is fixedly arranged in the containing chamber, and an inserting disk and a cover body which are arranged above. The switch part comprises a front fixed connecting point, a back fixed connecting point, and an elastic connecting point which is pushed by the magnetic pole member. The length of the containing chamber on the back end of the base is slightly longer than the length of the magnetic pole member which is fixedly arranged in the containing chamber, and therefore, a gap is formed for regulating contact pressure between the elastic connecting point and the front fixed connecting point.

Description

Constitute the relay of adjusting the contact pressure gap

The utility model belongs to relay, particularly a kind of relay that constitutes adjustment contact pressure gap.

As shown in Figure 1, the relay of commonly using comprises pedestal 1a, switch portion 2a, pole pieces 3a, inserted sheet 4a and lid.But pedestal 1a front end has the terminal hole 11a of a group or more switch portion of several supplying apparatus 2a, and pedestal 1a rear end then has rectangular accommodation chamber 12a.

Fixed contact 21a, elastic contact 22a and back fixed contact 23a before each group switch portion 2a comprises.It is inserted in respectively on the terminal hole 11a of pedestal 1a, makes terminal supportor expose the bottom surface of pedestal 1a, and elastic contact 22a upper end is receded, and keeps contacting with back fixed contact 23a and constituting normally closed contact; Then constitute normal opened contact between elastic contact 22a and the preceding fixed contact 21a.

Pole pieces 3a system is installed forward in accommodation chamber 12a by pedestal 1a rear end, it comprises plastic rubber bracket 31a and is set around coil 32a on the plastic rubber bracket 31a, and in support 31a and bottom, support 31a rear end be installed with magnetic pole 33a respectively and be pivoted with metal push pedal 34a.When coil 32a two ends imported electric current, above-mentioned push pedal 34a can be subjected to the attraction of magnetic pole 33a and swing forward.

Inserted sheet 4a system is made by insulating material, answers side provided thereon after pedestal 1a and pole pieces 3a combination, and the rear and front end of inserted sheet 4a is supported in respectively between the push pedal 34a of the elastic contact 22a of switch portion 2a and pole pieces 3a.

Cover plate system makes with plastic material, its with base combination after, above-mentioned other part can be coated on wherein becomes an independently individuality.

Yet, as above-mentioned known relay, wherein normally closed contact system is against on the fixed contact 23a of back naturally backward by the elastic force of elastic contact 22a, and wherein inserted sheet 4a and push pedal 34a to retreat the space bigger so that all do not have the problem generation for contact pressure and its mobile space etc.; But with regard to normal opened contact, because of the degree of depth of the accommodation chamber 12a of pedestal 1a identical with the length of pole pieces 3a, just no unnecessary space can be adjusted behind the accommodation chamber 12a of pedestal 1a that pole pieces 3a is packed into, and it is inserting fixing immediately glutinous being integral of back quilt, so known relay is in manufacture process, its each details and accessory size all need to do quite accurately, otherwise the above-mentioned normal opened contact that is made of elastic contact 22a and preceding fixed contact 21a is when pole pieces 3a moves, very easily produce the displacement deficiency and come in contact bad situation, and then influence the quality and the useful life of relay, even can increase the fraction defective of product, cause the increase of manufacturing cost.

But in the manufacturing process of reality, accomplishing not have fully error is very difficult in fact, especially the copper coin material of forward and backward fixed contact 21a, 23a and elastic contact 22a is too thin, all there is not dependence again, so also be easy to distortion in the time of in being inserted in the terminal hole 11a of pedestal 1a, and for to make normally closed contact can possess preferable electric contact effect, often elastic contact 22a is curved a bigger angle, and make its deflection back fixed contact 23a as far as possible.Therefore, when if the size of pole pieces 3a and plate 4a too early is fixed, plate 4a is to the actuating quantity of elastic contact 22a ejection, promptly Zuo Yong effective travel might be too little, even can't reach and force elastic contact 22a and preceding fixed contact 21a to reach the purpose that is electrically connected, and make relay be easy to generate loose contact or arcing, or the situation that at all must scrap with regard to not reaching.

The purpose of this utility model provides a kind of contact that makes and all can keep the best effect, product percent of pass height, cost formation low, long service life of being electrically connected to adjust the relay in contact pressure gap.

The utility model comprise the rear end constitute the pedestal of accommodation chamber, be mounted on the pedestal front end switch portion, be fixedly arranged on pole pieces in the accommodation chamber, be mounted on the inserted sheet and the lid of top; Switch portion comprises forward and backward fixed contact and the elastic contact that is promoted by pole pieces; The length of pedestal rear end accommodation chamber is approximately greater than the length that is fixedly arranged on the pole pieces in it; Make and constitute the gap of adjusting contact pressure between elastic contact and the preceding fixed contact between pole pieces front end and the accommodation chamber internal face.

Wherein:

The gap is about 0.5～3mm.

The gap is at least 0.5～1.5mm.

Since the utility model comprise the rear end constitute the pedestal of accommodation chamber, be mounted on the pedestal front end switch portion, be fixedly arranged on pole pieces in the accommodation chamber, be mounted on the inserted sheet and the lid of top; Switch portion comprises forward and backward fixed contact and the elastic contact that is promoted by pole pieces; The length of pedestal rear end accommodation chamber is approximately greater than the length that is fixedly arranged on the pole pieces in it; Make and constitute the gap of adjusting contact pressure between elastic contact and the preceding fixed contact between pole pieces front end and the accommodation chamber internal face.During assembling, by the length of accommodation chamber greater than pole pieces length, make between pole pieces front end and the accommodation chamber internal face and constitute the gap, and by the gap of measuring when making elastic contact produce best contact pressure to preceding fixed contact apart from the driver adjustment, with the effect of guaranteeing that it is electrically connected, prevent loose contact and produce the phenomenon of spark, carbon distribution and short circuit, not only make contact all can keep the best effect that is electrically connected, and product percent of pass height, low, the long service life of cost, thereby reach the purpose of this utility model.

Fig. 1, be known relay construction schematic sectional view.

Fig. 2, be the utility model decomposition texture schematic isometric

Fig. 3, be the utility model structural representation stereogram.

Fig. 4, be the utility model structural representation cutaway view.

Below in conjunction with accompanying drawing the utility model is further elaborated.

As Fig. 2, Fig. 3, shown in Figure 4, the utility model comprises pedestal 1, switch portion 2, pole pieces 3, inserted sheet 4 and lid 5.

But pedestal 1 front end has the terminal hole 11 of a group or more switch portion 2 of several supplying apparatus, and pedestal 1 rear end then has rectangular length approximately greater than the accommodation chamber 12 of pole pieces 3 length 0.5～3mm.

Fixed contact 21, elastic contact 22 and back fixed contact 23 before each group switch portion 2 comprises.It is inserted in respectively on the terminal hole 11 of pedestal 1, and the bottom surface that makes terminal supportor expose pedestal 1 makes elastic contact 22 contact and constitute normally closed contact with back fixed contact 23; Then constitute normal opened contact between elastic contact 22 and the preceding fixed contact 21.

Pole pieces 3 is to be installed forward in accommodation chamber 12 by pedestal 1 rear end, and formation is about 0.5～3mm between its front end and accommodation chamber 12 internal faces 14, is at least the gap 6 of 0.5～1.5mm.Pole pieces 3 comprises plastic rubber bracket 31 and is set around coil 32 on the plastic rubber bracket 31, and in support 31 and bottom, support 31 rear ends be installed with magnetic pole 33 respectively and be pivoted with metal push pedal 34.When coil 32 two ends imported electric current, above-mentioned push pedal 34 can be subjected to the attraction of magnetic pole 33 and swing forward.

Inserted sheet 4 is to be made by insulating material, when side provided thereon is answered in pedestal 1 and pole pieces 3 combination backs, and the rear and front end of inserted sheet 4 is supported between the push pedal 34 of the elastic contact 22 of switch portion 2 and pole pieces 3 respectively.

Cover plate 5 is to make with plastic material, and after itself and pedestal 1 made up, above-mentioned other part can be coated on wherein became an independently individuality.

When pole pieces 3 is inserted in the accommodation chamber 12 of pedestal 1, by the length of accommodation chamber 12 length greater than pole pieces 3, make to constitute between pole pieces 3 front ends and accommodation chamber 12 internal faces 14 and be about 0.5～3mm, be at least the gap 6 of 0.5～1.5mm, and do not stick together when being located at inserted sheet 4 device card between elastic contact 22 and the push pedal 34 between being fixed in the accommodation chamber 12 at it, utilize and measure apart from driver, promptly have pneumatic, motor screw drives or manually driven is finely tuned or the driving mechanism of stepping mechanism, push ahead by push pedal 34 rear sides, whole pole pieces 3 is moved forward, and through push pedal 34 and inserted sheet 4 promote elastic contacts 22 forward fixed contact 21 directions move, until elastic contact 22 just with till preceding fixed contact 21 contacts, the support 31 that makes the support 31 of only clamping pole pieces of driver 3 further promote pole pieces 3 more again moves forward to the distance that sets, stop the action of driver behind about 0.1～0.5mm, and establish quick-drying gelatin by 13 of apertures on pedestal 1 end face, make pole pieces 3 and pedestal 1 connect to one.

As mentioned above, the adjustment pole pieces 3 that the utility model can reach easily is fixed in the most correct position in pedestal 1 accommodation chamber 12, and before elastic contact 22 just can be touched during fixed contact 21, can make inserted sheet 4 push ahead a suitable spacing again, so that fixed contact 21 produces best contact pressure before 22 pairs of the elastic contacts, promptly adjust the contact pressure of elastic contact 22 and preceding fixed contact 21 by the gap 6 that constitutes between pole pieces 3 front ends and accommodation chamber 12 internal faces 14, with the effect of guaranteeing that it is electrically connected, prevent loose contact and produce spark, the phenomenon of carbon distribution and short circuit.

Claims

1, a kind ofly constitute the relay of adjusting the contact pressure gap, it comprise the rear end constitute the pedestal of accommodation chamber, be mounted on the pedestal front end switch portion, be fixedly arranged on pole pieces in the accommodation chamber, be mounted on the inserted sheet and the lid of top; Switch portion comprises forward and backward fixed contact and the elastic contact that is promoted by pole pieces; The length that it is characterized in that described pedestal rear end accommodation chamber is approximately greater than the length that is fixedly arranged on the pole pieces in it; Make and constitute the gap of adjusting contact pressure between elastic contact and the preceding fixed contact between pole pieces front end and the accommodation chamber internal face.

2, formation according to claim 1 is adjusted the relay in contact pressure gap, it is characterized in that described gap is about 0.5～3mm.

3, formation according to claim 1 and 2 is adjusted the relay in contact pressure gap, it is characterized in that described gap is at least 0.5～1.5mm.