JPH0132271Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field This invention relates to a mounting device for a thermal relay applied to a hermetic electric compressor, etc.

(b) Conventional technology Conventionally, this type of thermal relay mounting device was
As disclosed in Publication No. 38-7247, etc., a terminal fence is fixed to the outer wall of a hermetic electric compressor and has a rising wall and a notch, and a relay holding plate has an accommodation hole for a thermal relay inside. By accommodating the thermal relay in the housing hole of this holding plate and inserting and locking the end of the holding plate into the notch of the terminal fence from the horizontal direction (direction along the outer wall), the thermal relay is compressed. It was designed to press elastically against the outer wall of the aircraft.

(c) Problems to be solved by the invention However, according to the above configuration, the notch of the terminal fence and the relay holding plate interlock in the horizontal direction, so there is a large space on the holding plate insertion side of the notch (a space wider than the holding plate). is required, and if the rising wall of the fence is formed all around the circumference by drawing, etc., the space between the notch and the rising wall on the side where the retainer plate is inserted becomes wide, and the fence and the cover that covers it become There was a problem with the size.

This proposal was developed in view of this point, and even if the rising wall of the fence is formed all around, there is no need to take up a large space inside the fence on the side where the relay holding plate is inserted, and the fence and this It is an object of the present invention to provide a mounting device for a thermal relay that can reduce the size of a cover that covers the relay and has good installation workability.

Also, when installing a relay retaining plate, it prevents the retaining plate from flipping over or shifting laterally as the thermal relay is pulled by the lead wires etc. attached to the relay, causing the relay to float up. , the purpose is to stabilize the operating characteristics of thermal relays.

(d) Means for solving the problem This proposal consists of a terminal fence that is fixed to the outer wall of a hermetic electric compressor and has a bottom wall, a rising wall extending all around the circumference, and a pair of holding arms, and a thermal relay housed inside. A relay retaining plate having a hole and having an end inserted into and locked into the presser arm to elastically press the thermal relay and the outer wall of the compressor, wherein the presser arm has an outer wall of the compressor. While providing a protrusion that protrudes toward the
Engagement holes with which the protrusions engage are provided at the insertion end of the relay holding plate, and the engagement holes of the relay holding plate are provided within the range where the accommodation holes are located on a straight line connecting these two engagement holes. A guide plate is formed to be offset from the center toward the front in the insertion direction, and a guide plate is provided on the holding plate to abut on the side surfaces of both presser arms to restrict lateral displacement of the holding plate, and a guide plate is provided at the front in the insertion direction. A rotation inhibiting portion is provided that comes into contact with the bottom wall of the terminal fence and inhibits the holding plate from reversing using the engagement hole as a fulcrum.

(e) Effect The thermal relay mounting device of the present invention has the above structure, so when installing the relay holding plate on the terminal fence, the front end of the holding plate on the insertion side does not get in the way, so the holding plate can be held down. The terminal fence can be inserted diagonally into the arm, the rising wall of the terminal fence extends over the entire circumference, and even if the space between the presser arm and the rising wall in the fence is narrow, the holding plate can be smoothly attached. In addition, since the thermal relay is arranged on a straight line connecting the engagement holes of the retaining plate, the elastic force of the retaining plate applied to the relay is not impaired, and the relay can be placed in close contact with the outer wall of the compressor. The operating characteristics can be maintained.

Furthermore, the holding plate includes a guide plate that comes into contact with the sides of both presser arms to restrict lateral displacement of the holding plate, and a guide plate that is provided at the front in the insertion direction and comes into contact with the bottom wall of the terminal fence to engage the holding plate. A rotation prevention part is provided to prevent the holding plate from reversing using the dowel hole as a fulcrum, so when installing the relay holding plate, the holding plate can be smoothly guided to the protruding part, and the thermal relay can be attached to the relay. This prevents the holding plate from flipping over or shifting laterally as if the relay were lifted up by being pulled by lead wires, etc., and the thermal relay is securely fixed in place for operation. Characteristics can be stabilized.

(F) Embodiment The present invention will be explained below based on the drawings. Reference numeral 1 is a hermetic electric compressor in which an electric compressor body (not shown) is housed in a hermetic container 2. 3 is the airtight container 2
This is a terminal fence having a rising wall 4 fixed to the outer wall of the terminal by welding or the like, and a relief part 7 for a terminal terminal 6 attached to the closed container 2 is formed in the bottom wall 5 of the fence. Reference numerals 8 and 8 denote a pair of presser arms having protrusions 9, 9 which are cut and raised from the bottom wall 5 of the terminal fence 3 and project toward the closed container 2. 10 is a cylindrical thermal relay 1
1 is a relay holding plate which is elastically attached to the bottom wall 5 in the terminal fence 3.
2, and two rib portions 14, 14 formed on the side wall of the thermal relay 11 in the holding portion.
a rotation stopper 15 cut out so as to sandwich the
claws 16, 16 at opposing positions that abut against the side wall of the relay 11 to prevent rattling; and engagement holes 17 that engage the protrusions 9, 9 of the presser arms 8, 8;
17, and a guide plate 18, which is formed by bending the end of the holding part 13 toward the side opposite to the bottom wall 5, and whose inner surface abuts the presser arms 8, 8 to restrict lateral displacement of the holding plate 10. 18. Further, the insertion end sides of the guide plates 18, 18 are expanded outward.

Therefore, the engagement holes 17, 17 of the relay holding plate 10
Like the guide, the guide is provided at the end of the holding plate on the insertion side. That is, engagement hole 1
7 and 17 are the accommodation holes 19 on the straight line connecting both the engagement holes.
It is formed to be shifted toward the front in the insertion direction from the center of the relay holding plate 10 in the range where the relay holding plate 10 is located.

Further, the relay holding plate 10 is provided with rotation suppressing parts 19, 19 continuous to the guide plates 18, 18 at the front part of the holding plate in the insertion direction. The distal end of this restraining portion is in contact with the bottom wall 5 of the terminal fence 3, and prevents the holding plate 10 from being reversed using the engagement holes 17, 17 as fulcrums.

In the thermal relay mounting device configured as described above, the thermal relay 11 is attached to the terminal fence 3.
The method of mounting is to insert the thermal relay 11 into the housing hole 19 of the relay holding plate 10, and then
While holding the flange portion 12 of the relay holding plate 10 with the holding portion 13 of the relay holding plate 10, the relay holding plate 10 is attached to the projections 9, 9 of the presser arms 8, 8 of the terminal fence 3 in the order shown in FIGS. engagement holes 17, 17
The holding plate is inserted obliquely so that the holding plate is engaged with the holding plate, and is elastically held by the fence 3. Here, the engagement holes 17, 17 of the relay holding plate 10, which are engaged with the projections 9, 9 of the presser arms 8, 8, are offset from the center in the front part in the direction of insertion into the presser arms 8, 8. Because of this shape, the front end of the retaining plate 10 does not get in the way when inserting the retaining plate 10, and the retaining plate can be inserted from a considerable angle. Moreover, even if the space between the presser arms 8, 8 and the rising wall 4 (the wall on the insertion side of the holding plate) of the terminal fence 3 is narrow, the presser arms can be attached without increasing the height of the terminal fence 3. The whole can be made smaller. The projections 9, 9 of the presser arms 8, 8 are connected to the engagement holes 17, 17 of the relay holding plate 10.
It engages to prevent it from coming off. Further, the thermal relay 11 is connected to the two engagement holes 17 and 1 of the holding plate 10.
7, the elastic force of the holding plate 10 applied to the relay 11 is not impaired, and the relay 11 can be brought into close contact with the bottom wall 5 of the terminal fence 3 to maintain operating characteristics.

Further, the retaining plate 10 includes guide plates 18, 18 that come into contact with the side surfaces of both presser arms 8, 8 to restrict lateral displacement of the retainer plates, and guide plates 18, 18 that are connected to the guide plates in the insertion direction. The engaging hole 1 is provided in the front part and its tip is brought into contact with the bottom wall 5 of the terminal fence 3.
7, 17 and the holding plate 10 with the protrusions 9, 9 as fulcrums.
Since it is equipped with a rotation prevention part that prevents the reversal of the
When attaching the relay holding plate 10 to the terminal fence 3, the thermal relay 11 is pulled by the lead wire attached to the relay, and the holding plate 10 is inverted or shifted laterally so that the relay 11 floats up. The thermal relay 11 can be reliably fixed in a predetermined position and its operating characteristics can be stabilized.

Furthermore, since the guide plates 18, 18 have their tips open outward, they can be easily inserted even if the fitting dimensions between the guide plates and the presser arms 8, 8 are only small.

In addition, in the above description, the guide plates 18, 18
Although it is configured to be inserted on the outside of the presser arms 8, 8, the same effect can be obtained even if it is provided on the inside of the presser arms, and there is no deviation from the present invention.

(g) Effect of the invention As described above, according to the present invention, when the relay holding plate is attached to the terminal fence, the front end of the holding plate on the insertion side does not get in the way, so the holding plate can be placed diagonally. The holding plate can be inserted into the presser arm with the terminal fence, and the rising wall of the terminal fence extends all the way around, and even if the air between the presser arm and the rising wall inside the fence is narrow, the holding plate can be attached and removed smoothly. can. In addition, since the thermal relay is arranged on a straight line connecting the engagement holes of the retaining plate, the elastic force of the retaining plate applied to the relay is not impaired, and the relay can be placed in close contact with the outer wall of the compressor. Operating characteristics can be maintained.

Furthermore, the holding plate includes a guide plate that comes into contact with the sides of both presser arms to restrict lateral displacement of the holding plate, and a guide plate that is provided at the front in the insertion direction and has its tip abutted against the bottom wall of the terminal fence. In addition, we have provided a rotation prevention part that prevents the holding plate from reversing using the engagement hole as a fulcrum, so that not only can the holding plate be smoothly guided to the protruding part, but also when installing the relay holding plate, the thermal relay can be easily connected to the relay. This prevents the retaining plate from flipping over or shifting laterally as if the relay were lifted up by being pulled by the lead wires etc. attached to it, and it securely fixes the thermal relay in its designated position. The operating characteristics can be stabilized by

[Brief explanation of the drawing]

Figure 1 is a plan view of a terminal case showing an embodiment of the present invention, Figure 2 is a sectional view taken along the -' line in Figure 1, and Figure 3 is a diagram showing a terminal case with a thermal relay, etc. A plan view, FIG. 4 is a sectional view taken from the -' line direction in FIG. 3, FIG. 5 is a perspective view showing the relay holding plate, FIG. FIG. 7 is a sectional view of a main part showing a state in which the rotation suppressing portion of the relay holding plate is in operation. 1... Hermetic electric compressor, 3... Terminal fence, 4... Standing wall, 8, 8... Presser arm,
9, 9... Projection, 10... Relay holding plate, 11
...Thermal relay, 17,17...Engagement hole, 18,
18... Guidance guide, 19, 19... Rotation suppressing part, 20... Accommodating hole.

Claims (1)

[Scope of utility model registration request] A terminal fence is fixed to the outer wall of the hermetic electric compressor and has a bottom wall, a rising wall extending around the entire circumference, and a pair of presser arms, and has an accommodation hole for a thermal relay inside and has an end portion inserted into the presser arm. and a relay holding plate that elastically presses the thermal relay against the outer wall of the compressor, wherein the holding arm is provided with a protrusion that projects toward the outer wall of the compressor; An engagement hole is provided at the insertion end of the relay holding plate, and the engagement hole is inserted from the center of the relay retaining plate to the extent that the accommodation hole is located on a straight line connecting the two engagement holes. A guide plate is formed to be shifted toward the front in the direction of insertion, and a guide plate is provided on the holding plate to abut against the side surfaces of both presser arms to restrict lateral displacement of the holding plate, and a guide plate is provided at the front in the insertion direction of the terminal fence. 1. A mounting device for a thermal relay, characterized in that a rotation inhibiting portion is provided which abuts against a bottom wall and inhibits reversal of a retaining plate using an engagement hole as a fulcrum.