JP2020119846A - Waterproof connector - Google Patents

Abstract

To obtain a waterproof structure provided integrally with a resolver, and preventing water from entering into a connector housing having multiple terminals.SOLUTION: A waterproof connector comprises a connector housing (4A) formed integrally with the annular insulation cover (3) of a resolver (2), and having multiple terminals (4), an opening (6) formed on one side (5) of the connector housing (4A), where the terminals (4) are located, an external surface opening (8) formed in a part of the external surface (8a) of the connector housing (4A), where the opening direction (B) is orthogonal to the axial direction (A) of the connector housing (4A), and a resin (10) filled into the external surface opening (8). The terminals (4) penetrate a bottom part (21), the external surface opening (8) and the end wall (20), and the terminals (4) can be filled with the resin (10) from the external surface opening (8).SELECTED DRAWING: Figure 1

Description

The present invention relates to a waterproof connector, and more particularly, to a new improvement for sealing a waterproof connector with a resolver stator having a fixed orientation.

As a waterproof structure of this type of resolver connector that has been conventionally used, for example, the configuration of FIG. 2 of Patent Document 1 can be cited as an in-house product of FIGS. 4 and 5 described later.
That is, the reference numeral 2 in FIG. 4 is a known resolver, and a part of the ring-shaped insulating cover 3 of the resolver 2 is bulged at the time of molding to form a bulged portion 3A.

A plurality of terminals 4 connected to the stator windings (not shown) of the resolver 2 are insert-molded in the bulging portion 3A, and the tip end portions 4a of each of these terminals 4 are formed in the bulging portion 3A. It extends into the front end cylinder portion 5A attached to the front end.
An opening 6a is formed by the tip tube portion 5A and the tip portion 4a of the terminal 4.

Therefore, the connector structure of the resolver of FIG. 4 described above has a thicker opening than the resolver 2 because it is configured as described above, and the opening 6A is reinforced at that time. It was done.

Further, the conventional example of FIG. 5 shows a connector housing 4A made of resin molding having a bottomed inner hole 7A, and the inner hole 7A is formed along the axial center of the connector housing 4A.
Further, the bottomed portion 9 formed at one end of the inner hole 7A has a front terminal portion 4b, which is a portion of the terminal 4, extending therethrough.

A resin 10 such as a potting material is filled in the inner hole 7A, and the terminal 4 and the connector housing 4A are closely joined by the resin 10, but the connector housing 4A is changed from horizontal to vertical. Therefore, the resin 10 could only be filled from the inlet 7a of the inner hole 7A.

JP, 2014-92483, A

The conventional waterproof structure of the resolver connector has the following problems because it is configured as described above.
That is, in the case of the first conventional configuration shown in FIG. 4, liquid such as resin for sealing is injected from the opening 6a of the opening 6 in order to prevent the leak at the interface between the connector housing and the terminal like the opening 6. In order to do so, it is necessary to rotate the resolver 2 by 90 degrees and to set the connector housing 4A upright to perform the work, which becomes a factor of impeding productivity in the resolver manufacturing process.

Further, since the connector housing 4A is integrally molded on the same horizontal plane in a part of the ring-shaped insulating cover (not shown) of the normal resolver shown in FIG. 5, in this state, the connector housing 4A is laterally extended from the inlet 7a of the inner hole 7A. When the liquid resin 10 is supplied to, it is very difficult to supply this resin to the depth of the gap 4G of the inner hole 7A. Therefore, after the connector housing and the resolver are erected vertically in the final process of manufacturing, The liquid resin 10 had to be filled in the cavity 7.
Therefore, the same problem as the above-mentioned conventional example has occurred.

The present invention has been made to solve the above problems, and particularly an object thereof is to seal a waterproof connector in a state where the posture of the resolver stator remains horizontal.

A waterproof connector according to the present invention is integrally molded with a ring-shaped insulating cover of a resolver, has a connector housing having a plurality of terminals, an opening formed on one side of the connector housing, in which the terminals are located, and an outer surface of the connector housing. An outer surface opening formed in a part of the connector housing and having an opening direction orthogonal to the axial direction of the connector housing, and a resin filled in the outer surface opening, the terminal penetrating the bottom portion, the outer surface opening and the end wall. However, the resin is configured to be able to fill the terminal from the outer surface opening, and the outer surface opening is located between the opening and the end wall of the connector housing, A ring-shaped insulating cover of a resolver is integrally formed in the connector housing, and the resin filled in the outer surface opening is a gap between the connector housing and the peripheral surface of the terminal. And the gap is filled with the resin.

Since the waterproof connector according to the present invention is configured as described above, the following effects can be obtained.
That is, a connector housing having a plurality of terminals integrally formed with a ring-shaped insulating cover of a resolver, an opening formed on one side of the connector housing, in which the terminals are located, and a part of an outer surface of the connector housing. An outer surface opening whose opening direction is orthogonal to the axial rear of the connector housing and a resin filled in the outer surface opening, the terminal penetrates the bottom portion, the outer surface opening and the end wall, and the resin is Since the terminals can be filled through the outer surface opening, the liquid resin can be supplied and solidified in the state where the connector housing is in the same horizontal or horizontal position as the resolver as shown in FIG. Therefore, the manufacturing process can be simplified and the productivity can be improved.
Further, since the outer surface opening is configured to be located between the opening portion and the end wall of the connector housing, it is extremely easy to fill the liquid resin from the outer surface opening that opens upward. The terminal can be waterproofed.
Further, since the ring-shaped insulating cover of the resolver is integrally formed with the connector housing, it can be applied to a resolver similar to a known terminal pin holding portion.
Further, the resin filled in the outer surface opening enters the gap between the connector housing and the peripheral surface of the terminal, and the gap is filled with the resin. The resin can be filled only by the work.

It is sectional drawing which shows the structure of the waterproof connector by this invention. It is a top view of FIG. It is a perspective view which shows only the principal part of FIG. It is sectional drawing which shows the whole structure of the conventional waterproof connector. It is sectional drawing which shows the other prior art example different from FIG.

The waterproof connector according to the present invention is formed on one side of the connector housing, has an opening in which the terminal is located, and a part of an outer surface of the connector housing, and has a shape obtained by removing a part of the connector housing. An outer surface opening and an end wall through which a part of the terminal penetrates while forming the outer surface opening, and the outer surface opening is filled with a liquid resin in the same horizontal state as the resolver stator, and the terminal portion is connected to the connector housing. It is to waterproof inside.

Hereinafter, preferred embodiments of a waterproof connector according to the present invention will be described with reference to the drawings.
The same or equivalent parts as those of the conventional example will be described using the same reference numerals.
In FIG. 1, reference numeral 1 denotes an overall shape which is a bottomed tubular shape, and is insert-molded in a state in which a terminal 4 and a ring-shaped stator (not shown) are integrated with a ring-shaped insulating cover 3 of a known resolver 2. It is a waterproof connector structure.

FIG. 1 shows a sectional view of a connector housing 4A insert-molded as described above, and a bottomed cylindrical opening 6 is formed on one side 5 of the connector housing 4A.
On the other side 7 of the connector housing 4A opposite to the one side 5, a part of the outer surface 8a (including a round shape and a square shape) of the connector housing 4A is cut out by cutting or the like. And an outer surface opening 8 that is open to the outside air is formed.

The outer surface opening 8 has a semicircular (or angular) shape having a width W along the longitudinal axial direction A and a depth D along the opening direction B, and the outer surface opening 8 is adjacent to the outer surface opening 8. An end wall 20 of the connector housing 4A for forming a part of the above is formed.
After insert molding, the terminal 4 provided in the opening 6 penetrates the bottom portion 21 of the connector housing 4A, penetrates the end wall 20, and the tip portion 4b thereof extends along the axial direction A, It is extended inside the resolver 2 which is the outside.
In the above-mentioned state, the terminal 4 penetrates the bottom portion 21, the outer surface opening 8 and the end wall 20.

Next, in the above-mentioned state, the connector housing 4A connected to the resolver 2 is sent to an assembly position on a not-shown assembly table in a horizontal state, but when the connector housing 4A arrives in front of an operator. When the worker slowly pours the liquid resin 10 from the outer surface opening 8 from above, it solidifies, and the terminal tip 4a is solidified in the outer surface opening 8 in the state of FIG.

When the resin 10 is solidified, it intrudes into the slight gap 4G generated between the bottom portion 21, the end wall 20 and the peripheral surface 4e of the terminal 4 by the action similar to the capillary phenomenon. Later solidified.
Therefore, as shown in FIG. 1, not only one terminal 4 but also a plurality of terminals 4 in many cases as shown in FIG. 2, and when viewed from the outer surface opening 8, the resin 10 and the terminals 4 are alternately arranged. It is clear that it is set up.

According to the above-described waterproof connector of the present invention, even if the resolver 2 is used in water or in a position where a large amount of water is applied, the water from the outside will not come into contact with the bottom portion 21 and the terminal 4 as shown in FIG. The end wall 20 and the terminal 4 are completely sealed, and even when the resolver 2 is operating in water, water reaches the opening 6 side of the connector housing 4 and functions as a resolver or the like. Is never lost.
Further, the outer surface opening 8 has a shape as shown in the perspective view of FIG.

Since the waterproof connector according to the present invention has the outer surface opening 8 formed on the other side of the connector housing connected to the resolver, the liquid resin can be supplied from this outer surface opening in the same posture as in the case of assembling, so that the waterproof work can be performed. Becomes extremely easy.

2 resolver 3 ring-shaped insulating cover 4 terminal 4A connector housing 4a terminal tip 4b tip part 4e peripheral surface 4G gap 5 one side 6 opening 7 other side 8 outer surface opening 8a outer surface 10 resin 20 end wall 21 bottom A axial direction B opening direction D depth W width

Claims (4)

A connector housing (4A) integrally formed with the ring-shaped insulating cover (3) of the resolver (2) and having a plurality of terminals (4), and formed on one side (5) of the connector housing (4A). 4) is located in the opening (6) and part of the outer surface (8a) of the connector housing (4A), and the opening direction (B) is orthogonal to the axial direction (A) of the connector housing (4A). An outer surface opening (8) and a resin (10) filled in the outer surface opening (8),
The terminal (4) penetrates through the bottom (21), the outer surface opening (8) and the end wall (20),
The waterproof connector, wherein the resin (10) can be filled into the terminal (4) through the outer surface opening (8). The waterproof connector according to claim 1, wherein the outer surface opening (8) is located between the opening (6) and an end wall (20) of the connector housing (4A). .. The waterproof connector according to claim 1, wherein the connector housing (4A) is integrally formed with a ring-shaped insulating cover (3) of the resolver (2). The resin (10) filled in the outer surface opening (8) enters the gap (4G) between the connector housing (4A) and the peripheral surface (4e) of the terminal (4), and the resin (10). 4. The waterproof connector according to claim 1, wherein the gap (4G) is filled with the waterproof connector.

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