JPH0234745Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field This invention relates to an improvement of a relay device for a hermetic compressor.

(b) Prior Art A conventional relay device for this type of hermetic compressor is constructed as proposed in Japanese Utility Model Application No. 57-87580. Therefore, a conventional example will be explained with reference to the drawings described in this publication. In FIGS. 1 to 3, reference numeral 1 denotes an airtight container housing an electric compressor (not shown) therein, and an airtight terminal 2 is attached to the airtight container by penetrating the container wall.
Reference numeral 3 denotes a starting relay that is fitted and attached to the airtight terminal 2, and this starting relay has a holder 4 which will be described later.
A locking hole 5 for locking is provided. The holder 4 includes an annular portion 9 that holds a columnar overload relay 8 having a collar portion 6 and a pin terminal 7, and a mounting portion 11 that has an engaging protrusion 10 that is engaged with the locking hole 5 of the starting relay 3. It is formed by 12 is the annular portion 9
This is a notch for letting out the pin terminal 7 formed in the hole. The pin terminal 7 is formed by a connecting portion 13 connected to the overload relay 8, a receptacle portion 14 into which the airtight terminal 2 is fitted, and an arm portion 15 connecting the connecting portion and the receptacle portion. 16 is a receptacle portion 14 of the pin terminal 7 into which the airtight terminal 2 is fitted;
This is a recess formed in the mounting part 11 to which the receptacle part 14 is locked, and this recess has a projection part that restricts the movement of the receptacle part 14 in the direction of arrow A in FIG. 1 when the starting relay 3 is inserted into the airtight terminal 2. 17 are provided.

In the relay device of this structure, the receptacle portion of the pin terminal 7 connected to the overload relay 8 is placed in the recess 16 of the mounting portion 11 of the holder 4 which is attached by engaging the engagement protrusion 10 with the locking hole 5 of the starting relay 3. 14 is pressed and locked, and when the starting relay 3 is fitted into the airtight terminal 2, the receptacle portion 14 of the pin terminal 7 is fitted into this airtight terminal.

However, the receptacle part 1 of the pin terminal 7
4 is a recess 16 bored in the mounting part 11 of the holder 4
If the arm portion 15 of the pin terminal 7 is deformed, the receptacle portion 14
is removed from the recess 16, and the airtight terminal 2 is no longer rejected by the receptacle.

(c) Purpose of the invention In view of the above points, the purpose of this invention is to directly press the receptacle portion of the pin terminal to prevent the receptacle portion from slipping out of the recess.

(d) Structure of the device The structure of the device is such that a holder is formed by a notched annular portion that holds the overload relay and a mounting portion that is attached to the starting relay, and a receptacle portion of the pin terminal that is connected to the overload relay is formed into a holder. A recessed portion to be locked is provided in the mounting portion, and a protrusion that projects into the recess and serves as a stopper for the receptacle portion is formed integrally with the mounting portion.

A relay device having this structure directly presses the receptacle part, which is locked in the recess provided in the mounting part of the holder, with the protrusion projecting into the recess, so that the receptacle part is fitted into the airtight terminal. .

(E) Embodiments This invention will be explained below based on embodiments shown in FIGS. 4 to 7. The relay device of this invention includes a starting relay 18 that is fitted and attached to an airtight terminal 2 provided through the wall of a closed container 1, and an engaging protrusion 10 that is engaged with an engaging hole 19 of this starting relay. A recess 16 for locking the receptacle part 14 bored in the mounting part 11 of the holder restricts the receptacle part from moving in the direction of arrow A in FIG. 4. The protrusion 17 and the protrusion 20 that restricts movement in the direction of arrow B in FIG. It is provided.

In the relay device for a hermetic compressor configured as described above, the order of assembling the relay device is explained. The holder 4 connects the starting relay 18 with the engaging protrusion 10 of the mounting portion 11 in the engaging hole 19 of the starting relay. Installed by engaging. An overload relay 8 having a pin terminal 7 is connected to the receptacle portion 1 of this pin terminal 7.
4 into the recess 16 of the mounting part 11 of the holder 4, press the arm part 15 of the pin terminal 77, and press the notch 21.
It is fitted into the annular portion 9 from above. Then, the starting relay 18 is fitted into the airtight terminal 2, and the relay device is completed.

The receptacle part 14 inserted into the recess 16 of the mounting part 11 is prevented from moving in the direction of arrow A by the protrusion 17.
Movement in the direction of arrow B is restricted by the protrusions 20, respectively,
When the starting relay 18 is attached to the airtight terminal 2, this airtight terminal is fitted into the airtight terminal 2. Moreover, the receptacle portion 14 is directly pressed by the protrusion 20, so that it will not come off from the recess 16 even if the arm portion 15 of the pin terminal 7 is deformed.

(f) Effects of the invention The relay device for a hermetic compressor of this invention forms a holder with a notched annular part that holds the overload relay and a mounting part that is attached to the starting relay, and is connected to the overload relay. A recess into which the receptacle of the pin terminal is locked is provided in the mounting part, and a protrusion that protrudes into the recess and serves as a stopper for the receptacle is formed integrally with the mounting part, so that the receptacle can be directly pressed by the protrusion. Therefore, the receptacle portion inserted into the recess can be prevented from coming off from the recess. Moreover, it is possible to prevent the receptacle portion from shifting within the recess and not fitting into the airtight terminal due to deformation of the pin terminal, as in the conventional case.

[Brief explanation of the drawing]

1 to 3 show a conventional example, FIG. 1 is a side cross-sectional view showing the state in which the relay device is installed, and FIG. 2 is a cutaway plan view of essential parts showing the state in which the starting relay and overload relay are connected. Fig. 3 is a plan view showing the pin terminal of the overload relay assembled into the holder, Figs. FIG. 5 is a cutaway plan view of essential parts showing a state in which the starting relay and overload relay are connected, FIG. 6 is a plan view showing a state in which the overload relay is assembled into the holder, and FIG. 7 is a side view of the holder. 1... Airtight container, 2... Airtight terminal, 4... Holder, 7... Pin terminal, 8... Overload relay, 9
... Annular part, 11 ... Mounting part, 14 ... Receptacle part, 16 ... Recessed part, 18 ... Starting relay, 2
0... Protrusion, 21... Notch.

Claims (1)

[Scope of utility model registration request] It is equipped with a starting relay that is fitted and attached to an airtight terminal provided through the wall of a sealed container, and a holder that holds an overload relay that is locked to this starting relay, and the holder holds the overload relay. The mounting part is formed by a notched annular part and a mounting part to be attached to the starting relay. A relay device for a hermetic compressor, characterized in that a protrusion serving as a stopper is integrally formed in a mounting portion.