JPS5963618A - Method of coupling divided partial cases - 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 The present invention relates to divided parts of a storage case for electrical equipment, etc., which are divided into partial cases and connected from the outside by a connecting means provided at the parts where the partial cases are joined to each other. Concerning how to connect cases to each other.

A case for an electromagnetic contactor is well known as a typical example of this type of storage case. Demand for magnetic contactors is rapidly increasing in the industrial world due to the increase in automension equipment and electric motor application equipment to improve production. Along with the demand for miniaturization and miniaturization, there is an increasing demand for the necessary maintenance and inspection of electromagnetic contactors when they are used in large quantities, for example, for as much labor savings and promptness as possible when replacing electromagnetic coils and contacts. Inevitably, it has become necessary to make the disassembly and assembly of the electromagnetic contactor case as simple and easy as possible.

A case as shown in FIG. 1 is known as a case for an electromagnetic contactor. That is, of the case consisting of two upper and lower parts, the upper case 1 includes a fixed contact 3, a movable contact 5 supported by a contact support 4 via a contact spring 6, a movable iron core 7 connected to the contact support 4, and a contact support. The return spring 10 attached to 4 is housed. On the other hand, a fixed iron core 8 is fixed to the lower case 2 so as to face the movable iron core 7, and an electromagnetic coil 9 is inserted into the fixed iron core 8. Upper case 1 like this
In order to connect the lower case 2 and the lower case 2, connecting means are provided on both sides of the joint of each case. In the case of the storage case shown in FIG.
A screw hole 15 is provided in 13a, and a screw 16 is used to connect the upper case 1 and the lower case 2. According to this method, the external dimensions of the storage case are increased by the amount that the protrusions 12, 128 and 13.13a formed on the side surfaces of the upper case 1 and the lower case 2 protrude from the side surfaces of the storage case. When arranging a large number of arrays, extra space is required.

In another conventional method shown in Fig. 2, the walls on both sides of the upper case 1 and lower case 2 of the storage case are thickened, contrary to the conventional method shown in Fig. 1. Upper case 1
Screw holes 15 are formed in the walls on both sides of the lower case 2 and holes 14 are formed in the walls on both sides of the lower case 2.
6 to connect the upper case 1 and lower case 2. With this method, unlike the conventional example shown in Figure 1, it is possible to reduce the degree of increase in the external dimensions of the storage case, but when assembling the storage case or disassembling it to replace internal parts, the magnetic contactor must be removed each time. The inconvenience of having to operate the screw 16 by turning it over causes a decrease in work efficiency.

Furthermore, even when the conventional coupling means shown in FIGS.
As long as 6 is used, time is required to tighten and loosen it, and this time cannot be ignored when dealing with a large number of electromagnetic contactors, especially when producing them. The rising cost is a problem.

In view of the above-mentioned drawbacks of the conventional method of joining the upper case and the lower case of a storage case, the present invention provides an extremely simple method that suppresses an increase in the external dimensions of the storage case and requires almost no labor and time when joining and disassembling the case. It is an object of the present invention to provide an economical method for connecting an upper case and a lower case of a storage case using a connecting means.

According to the present invention, in the method for connecting divided partial cases of a storage case, protrusions are provided on both sides of the joint between the partial cases, and the projections are provided on both sides of one partial case or This is achieved by having a coupling spring movably held in a projection on one of the side surfaces engage the projection on the other partial case with a single touch.

Next, the present invention will be explained in detail based on embodiments shown in the drawings.

In the embodiment shown in FIG. 3, the upper case 1 has fixed contacts 3. A movable contact 5 supported by a contact support 4 via a contact spring 6, a movable core 7 connected to the contact support 4, a return spring 10 attached to the contact support 4, etc. are housed, while the lower case 2 houses a movable contact 5 supported by a contact support 4. A fixed iron core 8 is fixed opposite to the iron core 7, and an electromagnetic coil 9 is inserted into the fixed iron core 8, as in the case of the conventional magnetic contactor storage case shown in FIG. . However, in the embodiment shown in FIG. It fits within the dimensions. Projections 18, 18aJ of lower case 2
This is the recess 2 provided at the bottom of these as shown in Figure 4.
A connecting spring 19 made of a 04 wire is movably held in place. On the other hand, a groove 21 adapted to the diameter of the wire of the coupling spring 19 is provided on the upper surface of the projections 17, 17a of the upper case 1.

To assemble such an electromagnetic contactor, simply combine the upper case 1 and the lower case 2 in which the various parts are housed as described above at the joint, and push the coupling spring 19 in the direction P as shown in Fig. 3. The coupling spring 19 fits into the groove 21 provided on the upper surface of the projections 17, 17a, and the upper case 1 and the lower case 2 are easily coupled. In addition, when disassembling the storage case for some reason, such as replacing the electromagnetic coil 9, use a screwdriver 2 as shown in Figure 5.
2 etc. to connect the coupling spring 19 to the protrusion 17.17 of the upper case 1.
It can be easily removed from the groove 21 on the upper surface of a.

Therefore, the assembly and disassembly of the electromagnetic contactor storage case can be performed very easily and quickly.

Next, FIGS. 6 and 7 show another embodiment of the present invention.

In this case, a connecting spring 23 made of a strip material is used instead of the spring 19 made of a wire rod in the embodiment shown in FIGS. 3 and 4, and a hook portion 24 formed at the lower part of the connecting spring 23 is A receiver provided on the lower surface of the lower case 2 movably engages with the opening 25, and presses a tongue 26 formed on the upper part of the coupling spring 23 into a groove 21 formed on the protrusion 17.17a of the upper case. Case 1 and lower case 2 are connected. In this case as well, to disassemble the storage case, use the screwdriver 22 or the like to remove the coupling spring 23 as explained in the embodiment shown in FIG.
can be easily removed from the groove 21 on the upper surface of the projection 17.degree. 17a of the upper case 1. In this embodiment, the electromagnetic contactor can be easily assembled and disassembled, and it is difficult to use a wire as a spring to connect the upper case and the lower case as in the embodiment shown in FIG. 3 in a narrow space. There is an advantage that ζ can also be adopted.

Furthermore, in the embodiment shown in FIG. 8, the coupling spring 19 or 23 in the embodiment shown in FIG. 3 or FIG.
is a combination of protrusions 17, 17a and 18.18a provided on the side surface of the joint between upper case 1 and lower case 2, that is, protrusions 17 and 18 and protrusions 17a and 1.
8a, and the protrusion related to the other combination is provided with an engaging portion formed by fitting a hook 27 formed on one protrusion into a socket 28 provided on the other protrusion. will be established. In this case, do we lose the above-mentioned advantages when assembling and disassembling the electromagnetic contactor? Although the case of an electromagnetic contactor has been described as an embodiment of the present invention relating to the method of connecting the upper case and the lower case of the storage case, the use side i of the connecting spring 19 or 23 can be saved. It goes without saying that the method of the invention is generally applicable to storage cases that are divided into partial cases and are connected from the outside by means of connecting means provided on the side surfaces of the joints of the partial cases.

As described above, the present invention provides for mutually connecting the divided partial cases of a storage case for electrical equipment, etc., which is divided into partial cases and connected from the outside by means of connecting means provided at the parts where the partial cases are joined to each other. In the joining method of
Protrusions are provided on both sides of the joint between the partial cases, and a coupling spring movably held and held by the protrusions on both sides or either side of one partial case is connected to the joint spring of the other case. By engaging the protrusion with a single touch, the external dimensions of the storage case for electric and magnetic contactors can be reduced by 1', making it extremely easy to connect and disassemble with almost no effort or time. Since a simple coupling means can be obtained, the space required for arranging a large number of electromagnetic contactors can be saved, and the cost for producing and maintaining them can also be reduced.

4. Figures 1 and 2 are a vertical cross-sectional view and a partial cross-sectional view showing a method of connecting divided partial cases in a conventional storage case for an electromagnetic contactor; Figures 3 to 8 are longitudinal sectional views and partial sectional views, respectively, showing a method of connecting the divided partial cases in the storage case of the present invention for an electromagnetic contactor and procedures for assembling or disassembling them. represents.

1... Dobe case, 2... Lower case, 17, 17
8...Protrusion provided on the side of the upper case, 18°1
8a...Lower)-1-Protrusion provided on the side of the space, 1
9゜23...Connection spring, 20...Recess, 24, 27
... Kagabe, 25.28... Uke is mouth.

7z diagram ＞S circle Figure 6 T et al. T7 figure

Claims (1)

[Claims] 1) The mutual connection of divided partial cases of a storage case for electrical equipment, etc., which is divided into partial cases and connected from the outside by a connecting means provided at the parts where the partial cases are joined to each other. In the coupling method, protrusions are provided on both sides of the joint between the partial cases, and a coupling spring movably engaged and held by the protrusions on both sides or either side of one partial case is connected to the coupling spring of the other partial case. A method for connecting divided partial cases to each other, characterized in that the protrusions of the partial cases are engaged with each other with a single touch. 2. A method for connecting divided partial cases to each other according to claim 1, wherein the connecting spring is formed from a linear spring material. 3) A method for connecting divided partial cases to each other according to claim 1, wherein the connecting spring is formed from a band-shaped spring material. 4) In the method according to any one of claims 1 to 3, among the respective protrusions provided on both sides of the joint part of the partial case, the protrusions on the side where the coupling spring is not provided are mutually A method for connecting divided partial cases, characterized in that they are connected by a retaining part formed by fitting a key formed on one protrusion into a hole provided in the other protrusion.