JPH0132273Y2 - - 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., the terminal fence is fixed to the outer wall of the 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, since the notch of the terminal fence and the relay holding plate interlock in the horizontal direction, a large space is created 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 retaining plate is inserted becomes wider, making it difficult for the fence and the cover that covers it to 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 the way 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 thermal relay and has good mounting workability.

(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 rising wall extending all around the circumference and a pair of holding arms, and a hole for accommodating a thermal relay inside. and a relay holding plate whose end is inserted into and locked in the presser arm to elastically press the thermal relay against the outer wall of the compressor, the presser arm having a relay holding plate that is inserted into and locked in the presser arm to elastically press the thermal relay against the outer wall of the compressor. A protruding protrusion is provided, and an engagement hole is provided at the insertion end of the relay holding plate in which each of the protrusions engages, and the accommodation hole is located on a straight line connecting these two engagement holes. The engagement hole is formed to be offset from the center of the relay holding plate toward the front in the insertion direction.

(e) Effect The thermal relay mounting device of the present invention has the above configuration, so 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 held down. It 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. Operating characteristics can be maintained.

(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.

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 offset from the center of the relay holding plate 10 toward the front in the insertion direction.

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.

(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 terminal fence can be inserted into the presser arm, and the rising wall of the terminal fence spans the entire circumference, 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 with one touch. Can be installed freely. 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.

[Brief explanation of the drawing]

Figure 1 is a plan view of a terminal fence 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 terminal fence with a thermal relay, etc. A plan view, FIG. 4 is a perspective view showing the relay holding plate, and FIGS. 5 to 8 are main part sectional views showing the order in which the thermal relay is assembled into the terminal fence. 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, 19...
...Accommodation 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 rising wall extending around the entire circumference and a pair of presser arms, and has an accommodation hole for a thermal relay inside, and an end portion thereof is inserted and locked into the presser arms. and a relay holding plate that elastically presses the thermal relay against the outer wall of the compressor, wherein the presser arm is provided with a protrusion that projects toward the outer wall of the compressor, and the insertion end of the relay holding plate is The engagement holes are provided in the parts to which the protrusions engage, and the engagement holes are located at the front of the relay holding plate in the insertion direction within the range where the accommodation holes are located on a straight line connecting the two engagement holes. 1. A mounting device for a thermal relay, characterized in that it is formed in a staggered manner.