JPH0453180Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a device for fixing a thermal safety device used in an electric compressor.

[Conventional technology]

Figures 4 and 5 are diagrams showing a conventional thermal safety device fixing device for an electric compressor. Figure 4 is a plan view, Figure 5 is a plan view,
The figure is a side view.

In the figure, 1 is an airtight container in which an electric compression element is housed, 2 is a support rod protruding from the surface of the airtight container 1, and 3
4 is a thermal safety device placed on the surface of the airtight container 1 and has a large diameter portion 3a; 4 is made of an elastic plate and has an approximately V-shaped tip;
It is a mounting tool formed in a letter shape, and has legs 4a that come into contact with the surface of the airtight container 1 at the end opposite to the V-shape and on both sides.
is bent and has a locking claw 4 in the center to prevent it from coming out.
The support rod 2 is inserted into the insertion hole. Further, the V-shaped opening piece 4c holds the thermal safety device 3.

The conventional thermal safety equipment fixing device for an electric compressor is constructed as described above, in which the mounting tool 4 inserted into the support rod 2 is prevented from moving downward by the legs 4a, and from moving upward by the locking claw. 4b. The thermal safety device 3 is inserted through the opening of the mounting tool 4 and the opening piece 4
c is pressed and fixed to the surface of the closed container 1.

[Problem that the invention attempts to solve]

In the conventional electric compressor thermal safety device fixing device,
The mounting tool 4 is formed in a V shape and has an opening on one side, so it is easy to attach the thermal safety device 3. However, since it is easily detached by external force, the thermal safety device 3 has a lead wire. It is necessary to avoid pointing toward the opening direction of the mounting tool 4. Further, there are other problems, such as that the protective equipment covering the thermal safety device 3 must have a special structure to prevent the above-mentioned detachment.

This idea was made to solve the above problems. It has good assembly, has excellent holding power, allows the direction of the lead wire of the thermal safety device to be freely set, and is a protective device that does not have a detachment prevention structure. An object of the present invention is to provide a thermal safety device fixing device for an electric compressor that can be used even with a covered thermal safety device.

[Means for solving problems]

The thermal safety device fixing device for an electric compressor according to this invention includes a thermal safety device that is held by a support rod protruding from the surface of a closed container and has a stepped column-shaped outer peripheral surface with a larger diameter on the side of the closed container. The mounting tool that presses and holds the closed container has a plate-like member whose tip is opened in an almost V-shape with a small diameter of the thermal safety device, and engages with the step on the outer circumferential surface of the thermal safety device. an opening piece that presses and holds the thermal safety device against the side of the closed container; and the inside end of at least one side of this opening piece is bent and is locked to the outer peripheral surface of the large diameter part of the thermal safety device. It is equipped with a thermal safety device falling-off prevention part.

[Effect]

The thermal safety device mounting tool according to this invention makes it difficult for the thermal safety device to come off by causing the large diameter portion of the thermal safety device to come into contact with the thermal safety device falling-off prevention portion.

〔Example〕

Figures 1 and 2 are views showing an embodiment of this invention, with Figure 1 being a plan view and Figure 2 being a side view.
The same reference numerals as in FIGS. 4 and 5 of the conventional apparatus described above are the same as or correspond to those in each figure.

In the figure, reference numeral 5 denotes a thermal safety device falling-off prevention portion that is integrally formed at the inner tip of one side of the opening piece 4c of the mounting tool 4 by bending in the same direction as the leg 4c.

In the thermal safety device fixing device for an electric compressor configured as described above, in the assembly process, when the thermal safety device 3 is attached to the mounting tool 4 held on the support rod 2, the opening of the opening piece 4c is opened by the small diameter width of the thermal safety device 3, so the thermal safety device drop-off prevention portion 5 that contacts the large diameter portion 3a of the thermal safety device 3 contacts the large diameter portion 3a and bends in the direction of bending. The thermal safety device 3 can be smoothly attached to the attachment tool 4. At this time, since the opening piece 4c itself is not deformed in any way, the opening piece 4c can be set to have sufficient strength to press and hold the thermal safety device 3 against the closed container. After the thermal safety device is attached, the thermal safety device fall prevention part 5 provided at the inner tip of the opening piece 4c is restored to its original bent state, and is attached to the outer peripheral surface of the large diameter portion 3a of the thermal safety device 3. It is locked. With this configuration, it is possible to easily install the thermal safety device 3 without applying any external force to the opening piece 4c, and furthermore, after installation, the thermal safety device 3 is prevented from being subjected to force in the direction of the opening. When the thermal safety device 3 is attached and tries to move, the large diameter portion 3a of the thermal safety device 3 comes into contact with the thermal safety device fall prevention portion 5 of the attachment device 4, so the holding force of the attachment device 4 to the thermal safety device 3 is increased. This makes it difficult to withdraw.

FIG. 3 is a diagram showing another embodiment of this invention. Thermal safety device fall-off prevention part 5 formed on the mounting tool 4
is bent and formed with an angle 6 facing the thermal safety device insertion direction, which improves the insertability of the thermal safety device 3 and reduces the size of the thermal safety device 3 when fixed. Since the angle of contact with the diameter portion 3a is increased, the non-separation property is improved.

[Effect of idea]

As explained above, in this invention, a thermal safety device is held by a support rod protruding from the surface of a closed container of an electric compressor, and has a stepped column-shaped outer circumferential surface with a larger diameter on the closed container side, and is pressed against the closed container. The distal end of the thermal safety device is formed of a plate-like member with a small diameter and opened in an almost V-shape, and it engages with the stepped part on the outer circumferential surface of the thermal safety device. an opening piece that presses and holds the container toward the closed container; and an inner tip of at least one side of the opening piece that is bent.
Equipped with a thermal safety device fall-off prevention part that is locked to the outer circumferential surface of the large diameter part of the thermal safety device, it is easy to assemble, and the opening piece itself will not be deformed, so the strength of the opening piece can be increased. It can be set appropriately, has excellent holding power to prevent the thermal safety device from detaching, allows the direction of the lead wire of the thermal safety device to be freely set, and also simplifies the protective equipment that covers the thermal safety device. effective.

[Brief explanation of the drawing]

1 and 2 are a plan view and a side view of an embodiment of the thermal safety device fixing device for an electric compressor according to this invention, FIG. 3 is a diagram showing another embodiment of the invention, and FIG. 4 is a diagram showing another embodiment of the invention. , FIG. 5 is a plan view and a side view of a conventional thermal safety device fixing device for an electric compressor. In the figure, 1 is an airtight container, 2 is a support rod, 3 is a thermal safety device, 4 is an attachment device, 4a is a leg, 4b is a locking claw, 4
c is an opening piece, 5 is a thermal safety device fall prevention part, and 6 is an orientation angle. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Claims for Utility Model Registration] (1) A support rod protruding from the surface of an airtight container in which an electric compression element is housed, and a support rod that is arranged on the surface of the airtight container and has a larger diameter on the side that contacts the surface of the airtight container,
A thermal safety device having a stair-column-shaped outer peripheral surface with a smaller diameter on the opposite side, and a mounting that is held by a fitting hole having a locking claw on the support rod and that presses and holds the thermal safety device against the sealed container. The fitting has a tip portion formed of a plate-like member having a substantially V-shaped opening with a small diameter width of the thermal safety device, and a stepped portion on the outer peripheral surface of the thermal safety device. an opening piece that presses and holds the thermal safety device toward the closed container side; and an inner tip of at least one side of the opening piece is bent, and the outer periphery of the large diameter part of the thermal safety device is bent. 1. A thermal safety device fixing device for an electric compressor, comprising: a thermal safety device falling-off prevention part that is latched to a surface. (2) Thermal safety of an electric compressor as set forth in claim 1 of the utility model registration claim, characterized in that the thermal safety device fall-off prevention part is formed with an angle to the insertion direction of the thermal safety device. Instrument fixation device.