CN2805061Y

CN2805061Y - Module type thermal relay

Info

Publication number: CN2805061Y
Application number: CN 200520060829
Authority: CN
Inventors: 任健成; 吴世泉
Original assignee: ABB Xinhui Low Voltage Switchgear Co Ltd
Current assignee: ABB Xinhui Low Voltage Switchgear Co Ltd
Priority date: 2005-06-28
Filing date: 2005-06-28
Publication date: 2006-08-09
Anticipated expiration: 2015-06-28

Abstract

The utility model discloses a module type thermal relay, which comprises a relay main body, wherein the relay main body is provided with a cover plate and a main terminal cover. The relay unit main body is composed of an actuating mechanism unit and a thermal base unit which are connected. The actuating mechanism unit and the thermal base unit are assembled by screws. The utility model adopts a modular structure, and thus the versatility of the components of the actuating mechanism is stronger. The utility model is suitable for thermal relays in different model numbers. Moreover, storehouse material management is more convenient. In addition, certain gaps are arranged between a left elastic piece, a right elastic piece and a push plate, thus, the push plate has to move in a certain distance and then the elastic pieces can move. Therefore, pressure between contacts can not drop down. At the same time, because the product use the reasonable structural module, lesser parts and simple machining and assembly methods, the product is much safer and the cost of the product is much lower.

Description

A kind of modular type thermal relay

Technical field

The utility model relates to a kind of electric motor protecting relay, particularly a kind of thermal relay.

Background technology

At present, cover plate and main terminal lid generally peg graft to be installed on the relay main body in existing thermal relay to combine, the relay main body generally is divided into actuating mechanism unit and hot radical seat unit two parts, because can adapting to the thermal relay of different model, uses the actuating mechanism unit, when with itself and heating base unit during as integral production, greatly reduce its versatility, and the also difficulty comparatively of installation of accessory during integral production, in addition, all there is the problem that has pressure to descend before the contact action in existing thermal relay, thereby is difficult to satisfy people's instructions for use.

Summary of the invention

In order to overcome the deficiencies in the prior art, the utility model provides a kind of modular type thermal relay simple in structure, easy for installation.

The technical scheme that its technical problem that solves the utility model adopts is:

A kind of modular type thermal relay, it comprises the relay main body, and cover plate and main terminal lid is installed on the relay main body, described relay main body is connected with hot radical seat unit two parts by the actuating mechanism unit and combines; Adopt screw to install between described actuating mechanism unit and the hot radical seat unit;

As improvement of the technical scheme, be provided with certain interval between left and right sides shell fragment that drives by push pedal in the described actuating mechanism unit and the push pedal;

As further improvement in the technical proposal, binding post uses the mounting means of draw-in groove boss to be installed in the actuating mechanism shell; Manually, automechanism and reset, shut-down mechanism is provided with Ka Tai, described actuating mechanism shell is provided with the U type location notch that cooperatively interacts with Ka Tai; Electric current is adjusted knob and is adopted spring to lock and be pressed in the actuating mechanism shell; Wink actuation mechanism clamping is installed in the actuating mechanism shell, and uses screw to lock; Pushing mechanism and shut-down mechanism are pegged graft and are installed on the actuating mechanism shell in the notched cylinder.

The beneficial effects of the utility model are: the utility model adopts modular construction, makes that the versatility of actuating mechanism assembly of elements is stronger, and the thermal relay that is fit to different model uses, and also more convenient for the warehouse handling of goods and materials; In addition, be provided with certain interval between left and right sides shell fragment and the push pedal, make push pedal to move to drive shell fragment after certain distance and move, thereby guaranteed that pressure can not descend between contact; Simultaneously, this product uses the rational structure pattern, and less part and simple processing and assembly method make product more safe and reliable, make the cost of product lower.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the fractionation structural representation of Fig. 1;

Fig. 3 is the structural representation after of the present utility model the uncapping;

Fig. 4 is the structural representation of actuating mechanism of the present utility model unit;

Fig. 5 is the fractionation structural representation of Fig. 4.

Embodiment

With reference to Fig. 1, Fig. 2, a kind of modular type thermal relay, it comprises relay main body 1, cover plate 2 and main terminal lid 3 is installed on the relay main body 1, described relay main body 1 is connected with hot radical seat unit 5 two parts by actuating mechanism unit 4 and combines, and the utility model adopts modular construction, makes that the versatility of actuating mechanism unit 4 parts is stronger, the thermal relay that is fit to different model uses, and also more convenient for the warehouse handling of goods and materials.

During installation; at first actuating mechanism unit 4 is assemblied on the heating support unit 5 by hook on the mechanism shell and screw 11; thereby form relay main body 1; the hook and the screw 12 that re-use on the mechanism shell are installed in cover plate 2 on the relay main body 1; at last main terminal lid 3 is installed in the heating support unit 5 and gets final product; wherein actuating mechanism unit 4 is not limited to above-mentioned screw with mounting means between the hot support unit 5 and is connected; can also use other common mechanical connection manner; as long as it reaches technique effect of the present utility model with essentially identical means, all should belong to protection range of the present utility model.

With reference to Fig. 3, Fig. 4, Fig. 5, the operation principle of thermal relay is: when thermal relay is subjected to overload current, the heat that heating wire produces deforms the active bimetal leaf 13 on the heating support unit 5, thereby drive differential attachment 14 motions, and the pushing mechanism 49 that differential attachment 14 drives in the actuating mechanism unit 4, pushing mechanism 49 promotion wink actuation mechanism 48 are moved, when the bow spring on the wink actuation mechanism 48 moves to zero point, unstable equilibrium will appear, it is zero that force vector appears in sleeve mechanism, flop phenomenon can appear when the bow spring moves again, upset appears in force vector, drive wink actuation mechanism 48 generation moment motions simultaneously, wink actuation mechanism 48 drive push pedals 41 are moved, and push pedal 41

drives shell fragments

42,43 move, thereby normally closed interlock is opened, normally open contact is closed, in order to have guaranteed that pressure can not descend between contact, with left and right

sides shell fragment

42,43 and push pedal 41 between be provided with certain interval, make push pedal 41 to move and could drive left and right sides shell fragment 42 after certain distance, 43 move.

Functions such as this product also has hand-reset, automatically resets, stops, thermal compensation, electric current adjustment, so accessories such as binding post 44, electric current adjustment knob 47 also are installed in the actuating mechanism unit 4, convenient when product is installed, binding post 44 uses draw-in groove boss mounting meanss to be installed in the actuating mechanism shell 6; In addition, manually, automechanism 45 and reset, shut-down mechanism 46 is provided with card platform 7, described actuating mechanism shell 6 is provided with and blocks the U type location notch 61 that platform 7 cooperatively interacts, this mounting means has guaranteed that displacement and loosening possibility can not take place thermal relay in the environment of vibrations, simultaneously, the Mould Machining of shell can be fairly simple; Adjust knob 47 as for electric current and adopt spring 8 to lock and be pressed in the actuating mechanism shell 6, it is more reliable to make product use; The thermal compensation sheet metal 15 of this product has adopted the intuitive manner of straight sheet rotation to carry out temperature-compensating, reduce the error that complicated structure is brought, and on bimetal leaf 13, added holddown spring 16, guaranteed that bimetal leaf 13 is in contact with one another with electric current adjustment knob 47 always; Wink, actuation mechanism 48 was connected in the actuating mechanism shell 6, and used screw to lock, thereby more accurate and reliable when having guaranteed mechanism kinematic; At last, pushing mechanism 49 and shut-down mechanism 40 pegged graft and is installed on the actuating mechanism shell 6 in the notched cylinder 62, makes that the installation of product is more simple and convenient.

Claims

1. modular type thermal relay, it comprises relay main body (1), cover plate (2) and main terminal lid (3) is installed on the relay main body (1), it is characterized in that: described relay main body (1) is connected with hot radical seat unit (5) two parts by actuating mechanism unit (4) and combines.

2. a kind of modular type thermal relay according to claim 1 is characterized in that: adopt screw to install between described actuating mechanism unit (4) and the hot radical seat unit (5).

3. a kind of modular type thermal relay according to claim 1 is characterized in that: be provided with certain interval between left and right sides shell fragment (42,43) that is driven by push pedal (41) in the described actuating mechanism unit (4) and the push pedal (41).

4. a kind of modular type thermal relay according to claim 1 is characterized in that: the binding post (44) in actuating mechanism unit (4) uses the mounting means of draw-in groove boss to be installed in the actuating mechanism shell (6).

5. a kind of modular type thermal relay according to claim 1, it is characterized in that: in actuating mechanism unit (4) manually, automechanism (45) and reset, shut-down mechanism (46) is provided with Ka Tai (7), described actuating mechanism shell (6) is provided with the U type location notch (61) that cooperatively interacts with Ka Tai (7).

6. a kind of modular type thermal relay according to claim 1 is characterized in that: the electric current in actuating mechanism unit (4) is adjusted knob (47) and is adopted spring (8) to lock and be pressed in the actuating mechanism shell (6).

7. a kind of modular type thermal relay according to claim 1 is characterized in that: wink actuation mechanism (48) clamping in actuating mechanism unit (4) is installed in the actuating mechanism shell (6), and uses screw to lock.

8. a kind of modular type thermal relay according to claim 1 is characterized in that: pushing mechanism (49) in actuating mechanism unit (4) and shut-down mechanism (40) grafting are installed in actuating mechanism shell (6) and go up in the notched cylinder (62).