CN1176476A

CN1176476A - Heat overload protector

Info

Publication number: CN1176476A
Application number: CN97117374A
Authority: CN
Inventors: 乔格·伊登哈特; 伯索得·赫尔得曼
Original assignee: Siemens AG
Current assignee: Siemens AG
Priority date: 1996-09-09
Filing date: 1997-08-14
Publication date: 1998-03-18
Anticipated expiration: 2017-08-14
Also published as: DE59710950D1; DE19636562B4; EP0828276B1; CN1068969C; EP0828276A2; EP0828276A3; DE19636562A1

Abstract

The present invention provides a thermal overload protective device, wherein, a conductive stent (2) used in a pair of metal breaking devices is successfully fixed in a shell (1) of the overload protective device, that is, the stent (2) is pressed into the shell (1) by clamping and fixing.

Description

Heat overload protector

The present invention relates to a kind of overload-alarm and/or overload protection arrangement, it has one and is fixed on the conducting bracket that is used for the bimetallic tripper in the housing.

This overload-alarm and/or overload protection arrangement are open by the equipment on the market, and the support of bimetallic tripper is by being threaded in these devices, and rivet or bonding way are fixed on the housing.The shortcoming of all these fixed forms is that owing to used plastic casing, the original pretightning force part of these fixed forms can be lost.

Existing another shortcoming is in the present technical solution, need additional installation finally to fit snugly in the support of bimetallic tripper in the housing, should additional installation comprise: the bimetallic tripper that has support is placed in the housing, locating support, take fixation, produce necessary pretightning force or make the bonding agent age-hardening.

The objective of the invention is to, the set-up time that reduces bimetallic tripper support, can realize the same with the present fixation of taking at least good connection.

The object of the present invention is achieved like this, and a kind of overload-alarm and/or overload protection arrangement promptly are provided, and it has one and is fixed on the conducting bracket that is used for the bimetallic tripper in the housing, and support is pressed in the housing with the clamping ways of connecting.

Reduced installation steps like this, and realized same at least good being connected between support and the housing, even if external loading is arranged, for example load on the terminals and adopt the influence that plastic housing brought still can keep its original closely cooperating.

The present invention is described in further detail by means of embodiment shown in the accompanying drawing below, in the accompanying drawing:

Fig. 1 is the three-dimensional diagrammatic sketch that has the housing of the bimetallic tripper support that is pressed into;

Fig. 2 is the unlimited front view of housing that has the bimetallic tripper support that is pressed into;

Fig. 3 is the cut-away view along the line of cut III-III in Fig. 2 front view;

Figure 4 and 5 are the embodiment that has the support of bimetallic strip.

Fig. 1 and Fig. 2 represent the thermoplastic shell of the heating chamber of this class protective device, and each in the housing is pressed into a bimetallic tripper that has support shown in Figure 4 mutually respectively.

The axial insertion depth of support 2 is determined by the stopper point 3 that forms by injection molding technology on the connection end plate 4 on the housing of heating chamber 1.

In the thermoplasticity stiffened shell of protective device heating chamber 1; each all has two opposed grooves 5 in mutually; this groove 5 has width (size between supporting point 6 and the opposed supporting point 6) and the material thickness 7 defined dimensional tolerance range lower limits with respect to support 2, can obtain so better to closely cooperate.When adopting support shown in Figure 4, lug plate 8 clamping connections of chamfer angle provide additional stability on the leg 9 in the groove of housing 10.This leg 9 parallels with the support 2 that is wound with bimetallic strip 11.When wiring end plate 4 and/or bimetallic tripper (shown in Fig. 4 or 5) aspect did not have to produce additional torque load to support 2, support 2 can not established leg as shown in Figure 5.For reducing moment of torsion to close-fitting influence, also have other technical measures, for example the structure of support 2 can be designed to form 12 (taillierter Form) with a tight waist.

Arrive its final positions at support 2, perhaps or rather, before connecting the stopper points 3 that end plate 4 arrives as shown in Figure 3, when support 2 has only supporting point 6 below 3 on cell wall 13, when being pressed into groove 5, may cause support 2 crimping too early in groove 5.

The lug plate 8 of butt joint stitch 9 is made chamfering, on support 2, select enough supporting points 6, these supporting points are because defined dimensional tolerance range lower limit can be pressed into groove 5, perhaps be pressed in the cell wall 13 more precisely, pre-determine and connect the stopper point 3 that is used for the restrictive axial insertion depth on the end plate 4, all these measures all allow can pack into housing 1 of support 2 and bimetallic tripper (Fig. 4 or shown in Figure 5) interior and fine and fit snugly in enduringly in the housing 1 with stretching.

Claims

1. overload-alarm and/or overload protection arrangement, it has one and is fixed on the conducting bracket that is used for the bimetallic tripper in the housing, it is characterized in that, and support (2) is pressed in the housing (1) with the clamping ways of connecting.

2. overload-alarm as claimed in claim 1 and/or overload protection arrangement is characterized in that, at least one support (2) is pressed in the housing (1) in the interior mode of at least one groove (5) that clamping is connected on the housing (1).

3. overload-alarm as claimed in claim 1 or 2 and/or overload protection arrangement is characterized in that, supporting (2) is pressed on the housing in the mutual opposed groove (5) with the clamping ways of connecting.

4. as described overload-alarm of above-mentioned each claim and/or overload protection arrangement; it is characterized in that; support (2) has a supporting point (6) that is bearing on the relevant cell wall (13) at least in a side, has at least two Ys along support (2) separated by a distance and be bearing in supporting point (6) on the relevant cell wall (13) at opposite side.

5. overload-alarm as claimed in claim 4 and/or overload protection arrangement is characterized in that, support (2) has the leg (9) of at least one bending, and this leg (9) is positioned at a plane that parallels with the holder part that is wound with bimetallic strip (1).

6. overload-alarm as claimed in claim 5 and/or overload protection arrangement is characterized in that, at least one leg (9) has at least one lug plate (8).

7. overload-alarm as claimed in claim 6 and/or overload protection arrangement is characterized in that, the supporting point (6) of lug plate (8) and/or support (2) is along the direction of insertion chamfer angle of support (2).

8. as claim 4 or 5 described overload-alarm and/or overload protection arrangements, it is characterized in that the axial restraint of insertion depth is determined by the length of groove (5).

9. as claim 4 or 5 described overload-alarm and/or overload protection arrangements, it is characterized in that the axial restraint of insertion depth is determined by a stopper point (3) that connects end plate (4) on the housing.

10. overload-alarm as claimed in claim 1 and/or overload protection arrangement is characterized in that, support (2) has the version (12) of many places (taillierte) with a tight waist.