JPH051978Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention relates to improvements in lead wire holders for hermetic electric compressors, etc., and in particular, for hermetic electric compressors equipped with a lead wire fixing structure. This relates to a lead wire holder for the machine.

[Prior Art] FIG. 4 is an exploded perspective view showing a terminal box of a conventional hermetic electric compressor disclosed, for example, in Japanese Utility Model Publication No. 55-11078.

In the figure, 1 is a terminal box board attached to a hermetically sealed jacket (not shown) near the motor of a hermetic electric compressor, 2 is an airtight terminal fixed to the hermetically sealed jacket, 3 is a lead wire for power supply, and 4 5 is a connection terminal for connecting the airtight terminal 2 and the lead wire 3, 5 is an outlet for the lead wire 3 formed on the terminal box board 1, and 6 is the terminal box board 1.
A cover 7 covers the upper opening of the terminal box board 1, and a clip 7 fixes the cover 6 to the terminal box board 1.

The terminal box of a conventional hermetic electric compressor is constructed as described above, and includes, for example, an elastic clip 7.
has an engaging portion 7a, which engages with the engaging hole 1a of the terminal box substrate 1 and fixes the cover 6 in a removable manner. The terminal box of this type of hermetic electric compressor was located outside the hermetically sealed jacket and was used for connecting the lead wire 3.

[Problems to be Solved by the Invention] In the terminal box of the conventional hermetic electric compressor as described above, the lead wire 3 and the connecting terminal 4 are generally connected by caulking. Further, the lead wire 3 was loosely inserted into the outlet 5 and was not fixed within the terminal box board 1.

Therefore, the lead wire 3 extending from the outlet 5 of the terminal box board 1 pulls the terminal box board 1 with a strong force when installing the terminal box board 1 to the sealing jacket of the compressor or during maintenance and inspection. There was a problem that the cable could come off from the connection terminal 4.

Therefore, this invention was devised to solve this problem, and even if the lead wire extending from the outlet of the terminal box board is pulled with abnormal force, it will not come off from the connection with the connecting terminal. The object of the present invention is to obtain a lead wire holder for a hermetic electric compressor that is free of lead wires.

[Means for Solving the Problems] The lead wire holder for the hermetic electric compressor according to this invention includes a flange provided at one end of the terminal box board, a lead wire fixing and holding member attached to the flange, and a lead wire holding member attached to the flange. The device includes a lead wire fixing device that forms an outlet for the lead wire together with a lead wire fixing and holding member, and a bolt that is screwed into a bolt hole screwed into the outlet to press and fix the lead wire.

[Function] In this device, the lead wire is inserted into the outlet formed by the lead wire fixing and holding member and the lead wire fixing device, and is pressed and fixed by the flange of the bolt. Even if force is applied, the force does not reach the connecting terminal, so the connection to the connecting terminal will not come loose.

[Embodiment] Fig. 1 is an exploded perspective view of a lead wire holder for a hermetic electric compressor showing an embodiment of this invention, and Fig. 2 is a perspective view showing its assembled state. In addition, in the figure, numerals 1 to 5 are the same or equivalent components as those of the conventional example described above.

8 is a lead wire fixing and holding member fixed perpendicularly to the terminal box board 1; 9 is a lead wire fixing auxiliary piece having an approximately E-shape in plan view having a mounting groove 9a; and 10 is a lead wire fixing auxiliary piece having a groove 10a formed at one end. Flange 10 on the other end
The bolt 11 formed by b is a bolt hole 11 for a bolt 10 provided in the lead wire fixing auxiliary piece 9.

Next, the assembly of the lead wire holder for the hermetic electric compressor configured as described above will be explained.

The lead wire fixing and holding member 8 fits into a flange 1b formed by bending one end of the terminal box board 1 at right angles, and has an engagement hole 1c provided in the flange 1b and an engagement piece provided in the lead wire fixing and holding member 8. 8a are engaged and fixed. Further, a lead wire fixing auxiliary piece 9 is inserted into the engaging hole 8b of the lead wire fixing and holding member 8, and the clamping part 8c of the engaging hole 8b and the engaging part 9b of the lead wire fixing auxiliary piece 9 are engaged. By making the state
Connect the lead wire fixing auxiliary piece 9 to the lead wire fixing holding member 8
and the outlet 5 of the lead wire 3 between them.
form. And the bolt 10 is the bolt hole 11
to be screwed together.

Note that, after completing the connection of the lead wires 3, covering the terminal box board 1 with a cover 6 and fixing it with clips 7 (not shown) is the same as in the conventional example.
The explanation will be omitted.

In the terminal box of the hermetic electric compressor assembled in this way, the lead wire 3 connected to the airtight terminal 2 via the connecting terminal 4 is formed by the lead wire fixing and holding member 8 and the lead wire fixing auxiliary piece 9. Outlet 5
The lead wire fixing member 8 is further pressed and fixed between the flange 10b of the bolt 10 screwed into the bolt hole 11 of the lead wire fixing auxiliary piece 9 and the lead wire fixing holding member 8. Note that the bolt 10 can be tightened using a tool such as a screwdriver using the groove 10a of the bolt 10.

By fixing the lead wire 3 to the outlet 5 in this way, a strong force is applied to the lead wire 3 when attaching the terminal box board 1 to the compressor's sealing jacket or during maintenance and inspection. Even if the lead wire 3 is pulled, the connecting terminal 4 will not come off from the airtight terminal 2.

Therefore, the lead wire 3 is extremely safe and reliable.
The lead wire holder can be used as a highly reliable hermetic compressor lead wire holder.

Next, other embodiments will be described.

The number of outlet ports 5 in the above embodiment, that is, the number of outlet ports 5 formed by the lead wire fixing and holding member 8 and the lead wire fixing auxiliary piece 9 is as follows: By using the approximately E-shaped lead wire fixing auxiliary pieces 9, two pieces were formed. However, the number of the outlets 5 is not limited to two, and may be one or more. For example, a plurality of outlets 5 may be formed depending on the number of lead wires 3. The same applies to the number of bolt holes 11.

Note that workability can be improved by doubling the number of bolt holes 11. for example,
Figure 3 shows an example of the installation work of the embodiment of this invention, a is an example of work from one side of the lead wire fixing aid, and b
FIG. 3 is a front view showing an example of work from the lead wire fixing and holding member side.

That is, bolt holes 11 for bolts 10 are provided in both the lead wire fixing and holding member 8 and the lead wire fixing auxiliary piece 9. By providing the bolt holes 11 on both sides in this way, the lead wire 3 can be fixed either from the lead wire fixing auxiliary piece 9 side or from the lead wire fixing and holding member 8 side, depending on the shape of the device.

In the above embodiment, this bolt hole 11 is provided in either the lead wire fixing/holding member 8 or the lead wire fixing auxiliary piece 9, and the structure is such that the bolt hole 11 is fixed by pressing the bolt 10 against the component facing these members. ing. However, if, for example, a bolt 10 is screwed onto the side surface of the lead wire fixing auxiliary piece 9, it becomes possible to fix it using only the lead wire fixing auxiliary piece 9 and the bolt 10. However, in this case, the number of outlet ports 5 is 2.
Limited to no more than 1.

As described above, the lead wire holder for the hermetic electric compressor of this embodiment includes the terminal box board 1, the cover 6 that covers the terminal box board 1, and the cover 6 that is removably attached to the terminal box board 1. a fixing clip 7; a flange 1b provided at one end of the terminal box board 1;
A lead wire fixing and holding member 8 attached to this flange 1b, a lead wire fixing auxiliary piece 9 which together with this lead wire fixing and holding member 8 forms an outlet 5 for the lead wire 3, and a bolt hole provided in the outlet 5. A flange 10b that is screwed onto 11 and presses and fixes the lead wire 3.
The bolt 10 is provided with a bolt 10 having a diameter.

However, when carrying out the present invention, the cover 6 that covers the terminal box board 1 and the clip 7 that removably fixes the cover 6 to the terminal box board 1 may be used as only the cover 6, or as , cover 6 and clip 7 can be omitted.

In addition, the flange 1b provided at one end of the terminal box board 1 in the above embodiment is bent at right angles from the surface of the terminal box board 1, but it is further bent to form a U-shape to securely hold the lead wire. It is also possible to have a structure in which the member 8 is attached to the terminal box board 1.

The bolt 10 having the flange 10b for pressing and fixing the lead wire 3 in the above embodiment may also be replaced with a bolt 10 having no flange 10b. In addition, a separate member can be used as a substitute for the flange 10b,
It is possible to create a structure in which stress is not directly applied to the lead wires 3.

Next, a method for forming each component of the lead wire holder of the hermetic electric compressor of the above embodiment will be described.

The lead wire fixing and holding member 8, the lead wire fixing auxiliary piece 9, and the bolt 10 can be easily formed from synthetic resin by injection molding. These parts may be formed as separate parts and assembled together as in the above embodiment, or they may be formed as an integral part.

That is, the terminal box board 1 and the lead wire fixing and holding member 8
The lead wire fixing member 8 and the lead wire fixing auxiliary piece 9 may be integrally formed.
When the lead wire fixing and holding member 8 and the lead wire fixing auxiliary piece 9 are integrally formed in this way, the lead wire 3
It is necessary to change the shape of the mounting groove 9a of the lead wire fixing auxiliary piece 9 so that it can be easily inserted into the outlet 5.

[Effects of the invention] As explained above, the lead wire holder for the hermetic electric compressor of this invention includes a lead wire fixing and holding member attached to a flange provided at one end of the terminal box board, and the lead wire fixing and holding member. This includes a lead wire fixing auxiliary piece that also forms an outlet for the lead wire, and a bolt that screws into a bolt hole provided in the outlet and presses and fixes the lead wire.
Since the lead wire is pressed and fixed with a bolt at the outlet, even if an abnormal force is applied to the lead wire, it will not be disconnected from the connection terminal. Therefore, extremely safe and reliable connection of the lead wires can be ensured, and a highly reliable lead wire holder for a hermetic electric compressor can be obtained.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing a lead wire holder for a hermetic electric compressor according to an embodiment of this invention, Fig. 2 is a perspective view showing the assembled state of the embodiment of Fig. Fig. 4 is a front view showing an example of work from the lead wire fixing and holding member side, and Fig. 4 shows a terminal box of a conventional hermetic electric compressor. It is an exploded perspective view. In the figure, 1... terminal box board, 3... lead wire, 5... outlet, 8... lead wire fixing and holding member, 9... lead wire fixing auxiliary piece, 10... bolt, 11... bolt hole In the figures, the same reference numerals and symbols indicate the same or equivalent parts.

Claims (1)

[Claims for Utility Model Registration] (1) A flange provided at one end of a terminal box board, a lead wire fixing and holding member attached to the flange,
A lead wire fixing auxiliary piece that forms a lead wire outlet together with the lead wire fixing and holding member, and a bolt that screws into a bolt hole provided in the outlet and presses and fixes the lead wire. A lead wire holder for a hermetic electric compressor. (2) The lead wire holder for a hermetic electric compressor according to claim 1, wherein a plurality of lead wire outlets are formed. (3) The utility model according to claim 1, characterized in that the bolt hole drilled in the lead wire outlet is provided in both the lead wire fixing and holding member and the lead wire fixing auxiliary piece. Lead wire holder for hermetic electric compressor. (4) The lead wire holder for a hermetic electric compressor according to claim 1, wherein the bolt for press-fixing the lead wire has a flange at its end.