JPS60178601A - Contactless starter - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a plug-in type or separate type non-contact starting device incorporating a positive characteristic heat-sensitive resistance element used for starting an electric compressor such as a refrigerator. In particular, the present invention relates to a method of assembling a positive temperature resistance element.

[Background of the invention]

A non-contact starting device incorporating a positive temperature sensitive resistance element, which is generally used to start an electric compressor such as a refrigerator, is installed in the outer shell 1a of the electric compressor 1 as shown in FIG. 1, depending on the purpose of use. The plug-in type, in which the cylindrical input terminal 2 and the plug-in terminal 3a of the non-contact starting device 3 are inserted and fitted to perform electrical connection and installation at the same time, and the electric compressor 1 as shown in FIG. Inserting and fitting the input terminal 2 provided on the outer shell 1 m with the plug-in terminal 48 with electric wire of the connecting device 4, electrical connection and installation are performed simultaneously, and the electric wire 43' of the plug-in terminal 4a with wire There are two types: a separate type that is used by connecting the electric wire connection terminal 5a of the non-contact starting device @5. In either case, the internal structure is as shown in Figs. The PTC heat-sensitive resistance element 8 is housed, and the PTC heat-sensitive resistance element 8 is stored as a main component.
Both electrodes 8a and 8b coated with a conductive material such as silver paste
An elastic body 9.10 having a substantially U-shaped bent portion 98.10a is brought into contact with each of the elastic bodies 9.10, and a wire connection portion 11. ．． Conductive metal fittings 11, 12 having electrically conductive metal fittings 11, 12a are arranged facing each other and connected to each other, and wire connecting terminal portions 11, . After protruding 12a from the housing 6,
In addition, the lid 13 could be turned over and secured to the housing 6 with a stopper 14.

Therefore, the assembly manufacturing method is as shown in FIG.
After housing the elastic bodies 9 and 10, the PTC heat-sensitive resistance element 8 is slid together with the support frame 7 between the elastic bodies 9 and 10, and the support frame 7 is inserted into the housing 6 as shown in FIG. At the same time, an assembly method has been adopted in which after the PTC heat-sensitive resistance element 8 is housed, elastic bodies 9 and 10 are simultaneously slid into the spaces of both the PTC heat-sensitive resistance element 8 and the housing 60, respectively.

In this assembly method, in both cases, both electrodes 8a and 8b of the PTC thermosensitive resistor cord 8 are connected to the contact surface 9c of the elastic body 9.10,
10C, and the electrodes 8'a and 8b are damaged. In the worst case, peeling of the electrodes 8a and 8b would cause the PTC heat-sensitive resistance element 8 to lose electrical continuity and stop functioning. In particular, since it is a blind assembly, the confirmation has to depend on the continuity check in the post-process, which leads to uncertainty in the confirmation and high costs (which may have been a drawback. The assembly method also caused an accident in which the elastic bodies 9 and 10 buckled and lost their elasticity.

As a countermeasure to this problem, an assembly method was adopted in which the positive temperature sensitive resistance element 8 was sandwiched between elastic bodies 9 and 10 via the support frame 7, and then pushed into the housing 6, as shown in FIG. .

In this assembly method, the supporting frame 7 is sandwiched between the elastic body 9 integrated with the conductive metal fitting 11 and the elastic body 10 integrated with the conductive metal fitting 12, which have poor stability, together with the positive characteristic heat-sensitive resistance cord 8, and the external shape is Since it is necessary to hold the conductive metal fittings 11, 12 or the elastic bodies 9, 10, which are not simple, during assembly, the workability is significantly reduced and the cost is increased.

In addition, when carrying out automatic assembly, there is a drawback that a large number of parts are assembled at the same time, making the equipment complex, large in size, and expensive. Furthermore, since the tips of the elastic bodies are separated, there are problems such as variations in contact pressure due to step differences between the contact surfaces 9C and IOCs, and entanglement during plating work.

[Purpose of the invention]

An object of the present invention is to provide a simple non-contact starting device that can be assembled without damaging both electrodes of a positive temperature resistance element.
We aim to provide products at low prices.

[Summary of the invention]

That is, a dogleg-shaped bent part is provided at the tip of the contact surface in contact with the electrode of the elastic body, which has a substantially U-shaped bent part that contacts both electrodes of the PTC heat-sensitive resistance element, and this dogleg-shaped bent part. A connecting portion is provided at the tip of the portion, and a gap is provided between the connecting portion and both electrodes of the PTC heat-sensitive resistance element so that elastic action is provided between the connecting portion and the contact surface in contact with the inner wall surface of the casing. After inserting a beak-shaped jig that divides the case into two from the center by utilizing this gap, the jig is pushed out in the direction of the inner wall of the casing to create a gap in the center of the jig, and at the same time, A gap is also created between the contact surfaces that are in contact with the electrodes of the elastic body, and between this gap, the PTC heat-sensitive resistor element is allowed to fall naturally into the housing using its own weight and is then stopped at a predetermined position. , by pushing the jig back in the opposite direction to the direction in which it was pushed out to bring the contact surfaces of both elastic bodies into contact with both electrodes of the PTC heat-sensitive resistance element, and then removing the jig by an operation opposite to the insertion. This is an attempt to eliminate the above drawbacks.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIGS. 7 to 13. The same reference numerals as in the past indicate the same items.

The difference from the conventional one is that doglegged bent portions 9d and 10d are provided at the tips of the contact surface 9c and lQc of the elastic body 9.10 that are in contact with both electrodes 8a and 8b of the PTC heat-sensitive resistance element 8. Connecting portions 9e, 1 are provided at the tips of the letter-shaped bent portions 9d, 10d.
0e, and the inner wall surface 5 of the housing 6 is provided between the connecting portions 9e, 10e and both electrodes 8a, 8b of the PTC heat-sensitive resistance element 8.
A gap is provided so as to act elastically between the contact surfaces 9f and 101 in contact with a and 5b. After inserting into this spacer a crow's beak-shaped jig 15 that is divided into two directions as shown in FIG. The contact surface 9C1IO is pushed out in the direction of the inner wall surfaces 5a and 5b to generate a gap 0, and at the same time contacts the electrode of the elastic body 9.10.
A gap is also generated between the C-spaces, and after this gap 0, the Di-positive heat-sensitive resistance element 8 is dropped into the housing 6 together with the support frame 7 using its own weight, and then the beak-shaped jig 1
5 and push it back in the opposite direction to the spreading direction and both elastic bodies 9.10
After contacting the contact surfaces 9C and IOC with both electrodes 8a and 8b of the PTC heat-sensitive resistance element 8, the divided portions 15a and 15b of the beak-shaped jig 15 are inserted between the respective divided portions 15a and 15b. The gap E provided.

This is because it is separated from F upwards.

In such an assembly manufacturing method, the dimension B of the beak-shaped jig 15 before division is defined as the dimension B of the beak-shaped jig 15. Dimension Bl<gap E and divided portion 15b dimension B, <gap F and gap D>
By setting the relationship between the thickness T of the PTC heat-sensitive resistor element 8, the PTC heat-sensitive resistor element 8 can be prevented from falling and the beak shape can be cured without damaging both electrodes 8a18b of the PTC heat-sensitive resistor element. It becomes possible to take out the tool 15.

As a result, the PTC heat-sensitive resistance element 8 does not lose electrical continuity and stop functioning, and it is possible to omit a continuity check in a subsequent process. Moreover, since the assembly work is simple, it can be manufactured at low cost.

In addition, in the assembly method of the present invention, the shape of the jig is simplified for automatic assembly, and the operation of the jig is controlled by a robot using a control circuit such as a microcomputer.
Nowadays, various operations can be easily obtained, so it is easy to implement them. Furthermore, since the tips of the elastic bodies are connected by respective connecting portions, a step is less likely to occur between the contact surface 9c and the IOC, and the contact pressure is stabilized. Moreover, there are no problems that can occur during plating work.

The present invention can be applied to all methods of assembling and manufacturing non-contact starting devices as long as a jig insertion gap is provided so as to retain elastic action, and the elastic body is restored by the elastic action. It has a characteristic that it does not depend on the shape of the ship.

〔Effect of the invention〕

According to the present invention, there is an effect that a non-contact starting device with high contact reliability can be obtained easily and inexpensively without damaging both electrodes of a PTC heat-sensitive resistance element.

Moreover, it can be done without changing the basic structure of the conventional non-contact starting device, and its practical effects are significant.

[Brief explanation of the drawing]

Fig. 1 shows the conventional plug-in type non-contact starting device and the present invention? Figure 2 is a perspective view of the installation configuration of the conventional and inventive separate type non-contact starting devices, and Figure 3 is an exploded view of the plug-in type non-contact starting device used in the conventional manufacturing method. A perspective view, FIG. 4 is an explanatory sectional view of the main part of FIG. 3, FIGS. 5, 6, and 7 are an explanatory sectional view of the main part of FIG.
The figure is an exploded perspective view of a non-contact starting device used in the manufacturing method of the present invention, FIGS. The figure is a perspective view of a jig showing one embodiment used for assembly of the present invention. 6... Housing, 7... Support frame, 8... Positive characteristic heat sensitive resistance element, 8a, 8b... Electrode, 9.10... Elastic body, 9a, 10... Approximately U Letter-shaped bent part, 9b, 10b・
...Connection part, 9C, IOC...Contact surface, 9d, 10d
... doglegged bent part, 9e, 10e... connection part, 9f
, 10f...Contact surface, 11.12...Conductive metal fitting, 11a, 12. ...Wire connection terminal, 13...Lid,
14... Stopper, 15... Jig, A... Gap,
B... Dimensions of the jig 15 before division, 13, B... Dimensions of the divided part of the jig ↓↓15, C... Gap of the jig 15, 1)
...Contact surfaces 9b, 10 b lil air gap, B, F
...Gap, T...Thickness of positive characteristic heat-sensitive resistance element 2
Fig. 3 Fig. 4 Fig. 5 Fig. ↓ Fig. 6 Non-Fig. 7 Fig. 2 Fig. 8 Fig. 10 // Fig. 12 Fig. Rod 13 Fig. (A)

Claims (1)

[Claims] 1. Conductive metal fittings (11, 12) are connected to iih (8a, 8b) of the positive temperature sensitive resistance element (8) housed in the space of the casing (6) via the support frame (7). Elastic bodies (9, 10
) are brought into contact with each other and the wire connection terminals (11a, 12a) provided on the conductive metal fittings (11, 12) are made to protrude from the casing (6), and then the lid (13) is covered with the metal fittings (14).
), the non-contact activation device is fixed to the housing (6) with a dogleg-shaped 4Ji curve at the tip of the contact surface (9c11oc) in contact with the electrodes (8, 8b) of the elastic body (9, 10). Part (9
d, 10d), and this dogleg-shaped bent part (9d
, 10d) are provided with connecting portions (9e, 10e) at their tips,
A non-contact starting device characterized in that a gap (A) is created between the connecting portion (9e, 10e) and both electrodes (8a, 8b) of the positive temperature resistance element (8). 2. Connecting parts (9e, 10e) and inner wall surface (6) of casing (6)
The non-contact starting device according to claim 1, which acts elastically between the contact surfaces (9r, 10f) in contact with the contact surfaces (9r, 10f).