CN201311877Y

CN201311877Y - Snap action bipolar temperature controller with double operating rods

Info

Publication number: CN201311877Y
Application number: CNU2008202038465U
Authority: CN
Inventors: 曾小军
Original assignee: 黎智文; 陈健敏
Priority date: 2008-11-17
Filing date: 2008-11-17
Publication date: 2009-09-16
Anticipated expiration: 2018-11-17

Abstract

The utility model relates to a snap action bipolar temperature controller with double operating rods, which belongs to the technical field of automatic control of electric appliances. Two operating rods are connected in two operating rod holes of a basal cover; a movable contact point, a movable contact piece, a static contact point and a static contact piece are respectively connected at the lower ends of the operating rods; a bimetallic strip is heated to reversely rotate so as to push a passive disconnection piece to reversely rotate; and the passive disconnection piece rotates reversely to push the two operating rods to vertically move downwards. Therefore, the two movable contact pieces are separated from the two static contact pieces, so as to achieve the purpose of cutting off the current. The utility model has the advantages of reasonable structure, stable performance, simple components, excellent consistent actions, long service life and wide application range. The snap action bipolar temperature controller comprises a base (1), a movable contact piece (2), a movable contact point (3), a static contact point (4), a static contact piece (5), a long rivet (6), a basal cover (7), a sealing cover (8), a bimetallic strip (9), a passive disconnection piece (10), a short rivet (11), a connecting terminal (12) and a restoring push rod (13), and is characterized in that operating rods (15) are connected in two operating rod holes (7-1) of a basal cover (1).

Description

A kind of bipolar thermostat of Kick type with two actuating struts

[technical field]

The utility model is the thermostat that electric heater is used, and particularly a kind of bipolar thermostat of Kick type with two actuating struts belongs to the electrical equipment automatic control technology.

[background technology]

The thermostat that electric heater is used uses general, and special national regulation must assemble bipolar thermostat for large-scale electric heater, to guarantee the safety of electric heater.But because therefore the bipolar thermostat of the Kick type necessary in use live wire and the zero line of deenergization simultaneously require the action consistency of thermostat to get well, the two poles of the earth will disconnect simultaneously, otherwise can be because the safety utilization of electric power accident takes place easily in the loop of circuit.And the bipolar thermostat of existing Kick type all is to adopt an actuating strut to control the (see figure 7) at the two poles of the earth on the market, simultaneously actuating strut and hand-reset bar is combined (see figure 9), and this structure is difficult to carry out accurate machining; So during fabrication, can only rely on the workman to process by hand, so not only efficient is low, and can not guarantee the accuracy of fit dimension, and the hardware height is different, and deviation is arranged, thereby, firmly irregular during promotion.The quality of fit of thermostat product is required to reach ± 0.05mm, otherwise the consistency just can not guarantee the disconnection of thermostat the two poles of the earth the time; And in two groups of dynamic and static parts, each parts all have the dimensions deviation man-hour adding, guarantee quality of fit reach ± 0.05mm is impossible, the manual debugging method can only be adopted, loosening, a series of quality problems such as elastic force is little, service behaviour instability of binding post will be occurred like this.Its operation principle is such: bimetal leaf 30 is heated to reverse and promotes passive disconnection sheet 31 counter-rotatings, by actuating strut 34 two moving contacts 23 and two fixed contacts 24 is separated again, thereby reaches the effect (as Fig. 8) of deenergization.Existing technology exists production efficiency low, and machining accuracy is poor, weakness such as product service behaviour instability, and the utility model is developed under a kind of like this background technology.

[utility model content]

The purpose of this utility model provides a kind of bipolar thermostat of Kick type with two actuating struts, and it is a kind of new improvement to prior art.It is to connect two actuating struts in two actuating strut holes of Ji Gai, connect two groups of moving contacts, movable contact spring, fixed contact and static contacts two actuating strut lower ends, promote passive disconnection sheet counter-rotating by the bimetal leaf counter-rotating of being heated, passive disconnection sheet counter-rotating promotes two actuating strut translations vertically downward simultaneously, two movable contact springs are separated with two static contacts, thereby reach the purpose of turn-off current.The utility model is rational in infrastructure, stable performance, and parts are simple, and action consistency is good, long service life, applied range.

The technical scheme of the utility model technical solution problem is such: the inventor conceives the cross-bar structure that prior art adopts actuating strut and the combination of hand-reset bar, its weakness is many, the machining difficulty, thus the inventor adopts the way that actuating strut and hand-reset bar are separately made to solve the problems referred to above.Therefore, the utility model comprises pedestal, moving contact, movable contact spring, fixed contact, static contact, long rivet, Ji Gai, capping, bimetal leaf, passive disconnection sheet, short rivet, binding post and the catch bar that resets, and its first design feature is to connect two actuating struts in two actuating strut holes of Ji Gai.Its second design feature is that Ji Gai is dish-like, and 5 holes are arranged on it, and the middle part is the catch bar hole that resets, and both sides are location hole and actuating strut hole; The Ji Gai bottom connects pedestal, there is the rectangle boss at the middle part of pedestal, and there is reference column both sides on boss, and there is the catch bar of resetting hole at the middle part, the location hole of Ji Gai is connected on the reference column, the catch bar that resets pass Ji Gai reset the catch bar hole, be connected pedestal and reset in the catch bar hole; Connect two groups of moving contacts, movable contact spring and binding posts at boss both sides short rivet; Two group leader's rivets connect two groups of fixed contacts, static contact and binding posts; The end of actuating strut is connected on the movable contact spring, at base lid middle part passive disconnection sheet of overlapping connection and bimetal leaf; Connect capping in the base portion of covering.Its 3rd design feature is that columniform actuating strut adopts pottery or other exotic material manufacturing.Its 4th design feature is that pedestal and Ji Gai adopt pottery or other exotic material manufacturing.

In sum, the utility model has been compared following advantage with prior art:

1, use two independently actuating struts, the length of every group of used actuating strut of dynamic and static assembly independent measurement, the production efficiency height can guarantee quality of fit, guarantees the consistency when thermostat the two poles of the earth disconnect.

2, actuating strut adopts the same specification of common one pole thermostat, is a ceramic cylinder, and processing can guarantee precision, and at high temperature also can not be out of shape easily.

3, pedestal, basic lid can be made with pottery or other temperature-resistant material, select materials extensively.

4, two backstays are arranged on the pedestal boss, the location hole that covers with base is corresponding, guarantees that Ji Gai in use can not rotate, thereby guarantees the performance of product.

5, the hand-reset push rod is a simple two-stage cylinder, acts directly on disconnection by on the moving plate, and it can use pottery or other temperature-resistant material to make equally, and is easy to manufacture.

[description of drawings]

Below in conjunction with description of drawings and embodiment structure of the present utility model is described in further detail:

Fig. 1 is the generalized section of the utility model when on-state;

Fig. 2 is the generalized section of the utility model when off-state;

Fig. 3 is the vertical view of parts pedestal of the present utility model and parts;

Fig. 4 is the vertical view of parts Ji Gai of the present utility model;

Fig. 5 is the front view of parts actuating strut of the present utility model;

Fig. 6 is the vertical view of accompanying drawing 5;

Fig. 7 is the generalized section of existing bipolar thermostat when on-state;

Fig. 8 is the generalized section of existing bipolar thermostat when off-state;

Fig. 9 is the front view of the cross composite move bar of the parts of existing bipolar thermostat.

In the accompanying drawing: 1, pedestal, 2, movable contact spring, 3, moving contact, 4, fixed contact, 5, static contact, 6, long rivet, 7, Ji Gai, 7-1, actuating strut hole, 7-2, location hole, 7-3, the catch bar hole that resets, 8, capping, 9, bimetal leaf, 10, passive disconnection sheet, 11, short rivet, 12, binding post, 13, the catch bar that resets, 15, actuating strut, 16, boss, 17, backstay, 18, the catch bar hole resets.

In accompanying drawing 7 to 9:

21, pedestal, 22, movable contact spring, 23, moving contact, 24, fixed contact, 25, static contact, 26, basic cage, 27, Ji Gai, 28, capping, 30, bimetal leaf, 31, passive disconnection sheet, 32, rivet, 33, binding post, 34, cross compound catch bar.

[embodiment]

Make each parts of the utility model as Fig. 1 to Fig. 6, and carried out Integration Assembly And Checkout, here it needs to be noted, there is a rectangular boss 16 at pedestal of the present utility model 1 middle part, two cylinders are arranged in the both sides of boss 16, be reference column 17, there is the promotion hole 18 that resets at the middle part, and there are five holes at base lid 7 middle parts, interstitial hole is to reset to promote hole 7-3, vertically there are 4 holes both sides, and a side is location hole 7-2, and opposite side is actuating strut hole 7-1, the location hole 7-2 here be with pedestal 1 on backstay 17 corresponding, when base lid 7 is connected on the pedestal 1, can fixed base cover 7, guarantee that base lid 7 can not rotate.And assembling actuating strut 15 among the 7-1 of actuating strut hole, passive disconnection sheet 10 is pressed close in its upper end, and following end device is on movable contact spring 2.Operating position of the present utility model is such; be assemblied on the electric heater debugging the bipolar thermostat of qualified basis; energising back electric heater normally heats up; when this bipolar thermostat was heated to set point of temperature, bimetal leaf 9 was heated to reverse and promotes two catch bar 15 downward translations of passive disconnection sheet 10 counter-rotating promotions, thereby promotes movable contact spring 2 respectively; moving contact 3 is separated with fixed contact 4; thereby open circuit reaches the effect that stops to heat up, and plays the protective effect to electric heater like this.

Claims

1, a kind of bipolar thermostat of Kick type with two actuating struts comprises pedestal (1), movable contact spring (2), moving contact (3), fixed contact (4), static contact (5), long rivet (6), Ji Gai (7), capping (8), bimetal leaf (9), passive disconnection sheet (10), short rivet (11), binding post (12) and the catch bar that resets (13), it is characterized in that connecting two actuating struts (15) in the lining, two actuating strut holes (7-1) of Ji Gai (1).

2, a kind of bipolar thermostat of Kick type with two actuating struts according to claim 1 is characterized in that described Ji Gai (7) for dish-like, has 5 holes on it, and the middle part is for resetting catch bar hole (7-3), and both sides are location hole (7-2) and actuating strut hole (7-1); Ji Gai (7) bottom connects pedestal (1), there is rectangle boss (16) at the middle part of pedestal (1), there is reference column (17) both sides on boss, there is the catch bar of resetting hole (18) at the middle part, the location hole (7-2) of Ji Gai (7) is connected on the reference column (17), the catch bar that resets (13) pass Ji Gai reset catch bar hole (7-3), be connected the pedestal lining, catch bar hole (18) that resets; Connect two groups of movable contact springs (2), moving contact (3) and binding post (12) at boss (16) both sides short rivets (11), the long rivets in both sides (6) connect two groups of fixed contacts (4), static contact (5) and binding post (12); The end of actuating strut (15) is connected on the movable contact spring (2), at Ji Gai (7) middle part passive disconnection sheet of overlapping connection (10) and bimetal leaf (9); Connect capping (8) on Ji Gai (7) top.

3, a kind of bipolar thermostat of Kick type with two actuating struts according to claim 1 is characterized in that columniform actuating strut (15) adopts pottery or other exotic material to make.

4, a kind of bipolar thermostat of Kick type with two actuating struts according to claim 1 and 2 is characterized in that pedestal (1) and Ji Gai (7) adopt pottery or other exotic material to make.