JP2001346362A - Water-cooling structure of motor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To freely independently attach an annular water-jacket to a motor by a method wherein the water-jacket is dividably composed of a plurality of bent-shaped jackets. SOLUTION: This water-cooling structure of a motor includes an annular water jacket (1) which can be independently detachably attached to the outer circumference of the motor. The annular water jacket (1) is composed of at least two bent-shaped jackets (2 and 3) and water is introduced into the bent- shaped spaces (10) in the bent-shaped jackets (2 and 3) for cooling.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water cooling structure for a motor, and more particularly, to a motor-cooling structure in which at least two bent jacket portions formed by press working or sheet metal working are connected to each other around a motor case. And a new improvement for providing the motor completely independent of the motor.

[0002]

2. Description of the Related Art Conventionally, as this type of motor water cooling structure, as a first conventional example, a method of forming a water cooling portion by casting a bent straight pipe into aluminum or the like is used. 2 As a conventional example, a method of forming a water-cooled hollow portion in a casting without using a pipe, as a third conventional example, a method of forming a water-cooled portion by drilling, and as a fourth conventional example, a water-cooled portion by groove processing and an O-ring. A method of forming a water-cooled portion by groove processing and welding as a fifth conventional example,
A sixth conventional example is a method of winding a pipe.

[0003]

Since the conventional motor water cooling structure is configured as described above, there are the following problems. That is, in the case of the first conventional example,
Not only is it extremely difficult to bend the pipe itself, but it is also extremely difficult to bend the pipe so that it fits on the outer periphery of the motor, for example. Further, in the case of the second conventional example, it is difficult to form a fine shape in order to form a hollow portion for water cooling in a cast motor case, and it is difficult to prepare each type for various types of motors and the like. .
Further, in the case of the third conventional example, since the water cooling portion is formed in the motor case by drilling, it is costly to process, and it is extremely difficult to prepare various types according to each motor and the like. . Further, in the case of the fourth conventional example, since the water cooling portion is formed by groove processing and an O-ring on the motor case, it is difficult to prepare various types as described above, and the reliability of the O-ring increases. It was extremely difficult to ensure sufficient quality. Further, in the case of the fifth conventional example, forming a water-cooled portion by groove processing and welding in the motor case is not easy in welding work, and it is extremely difficult to prepare various types according to various shapes of the motor. Was. Further, in the case of the sixth conventional example, in order to wind a pipe around various motors or the like, the pipe must be bent in accordance with the outer shape of the motor or the like. It was extremely difficult.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and in particular, has a ring-shaped water shape in which at least two bent jacket portions formed by press working or sheet metal processing are connected in a loop. It is an object of the present invention to provide a motor water cooling structure in which a jacket is provided on the outer periphery of a motor case in a state completely independent of the motor.

[0005]

A motor water cooling structure according to the present invention is a motor water cooling structure having a water jacket formed in a ring shape on the outer periphery of a motor case, wherein the water jacket has a bent shape as a whole and has a water jacket therein. At least two bent jackets having bent gaps are connected in a ring shape to supply water into each of the bent jackets, and each of the bent jackets has an axial direction. A pair of bent members having an open end surface with an open end surface and having a concave cross section are integrated by welding so that the open end surfaces are joined together, and the bent members are A small-diameter wall and a large-diameter wall outside the small-diameter wall, the small-diameter wall has an arc shape, and the large-diameter wall of each bent member has a plurality of planes. The outer periphery of Takesu, said a configuration recess for positioning of the water jacket is formed, also the bent-shaped jacket portion has a configuration which forms a water jacket of a plurality of non-two,
Further, the small-diameter wall and the large-diameter wall of each of the bent members have an arc shape.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a motor water cooling structure according to the present invention will be described below with reference to the drawings. 6 and 7, a reference numeral 1 denotes a water jacket having a substantially box-like overall shape and a ring shape. The water jacket 1 includes first and second bent jacket portions 2 and 3, each flange portion 4 of which is shown in FIG. 5 are connected by welding or the like. Each of the bent jacket portions 2 and 3 has a shape shown in FIG. 3 when viewed from a right side or a left side in FIG. 7, and has a substantially semicircular bent shape.

Each of the bent jacket portions 2 and 3 is shown in FIG.
As shown in FIG. 4, a pair of first and second bent portions each having an open end face 6 whose one end face is open in an axial direction orthogonal to the radial direction and having a concave cross section as shown in FIG. Each of the bent members 7, 8
Each open end face 6 of FIG.
It is integrated as follows.

Since each of the bent members 7 and 8 has a concave cross section, a bent space 10 is formed in the shape of a semicircle by this concave shape, and cooling water flows into and out of the first bent jacket portion 2. Part 11 and outlet part 1
In the case where each of the bent jacket portions 2 and 3 is integrated as shown in FIG. 7 to form a ring-shaped water jacket 1 as a whole, each of the bent jacket portions 2 and 3 has each of the bent gaps. The cooling water supplied from the inlet 11 circulates in a loop around each of the bent gaps 10 of the water jacket 1 and returns from the outlet 12 to a cooling water supply source (not shown). The cooling water supply source is configured to circulate in a ring shape.

Since each of the bent members 7 and 8 has a concave cross-sectional shape as shown in FIG. 5, the concave shape has a small-diameter wall 20 formed on the inner side, that is, on the small-diameter side in the radial direction. The large-diameter wall 21 is formed outside the small-diameter wall 20, that is, on the large-diameter side. The small diameter wall 20 has an arc shape as a whole, and the large diameter wall 21 is constituted by a plurality of flat surfaces 21a, 21b, 21c.

In the above-described embodiment, the case where two semicircular bent jacket portions 2 and 3 are used to form the annular water jacket 1 has been described. The number of 2, 3 is not limited to two, and for example, it may be configured as six, such as a 60-degree arc-shaped bent shape.

Since the water jacket 1 can be divided into a plurality of parts and mounted on the outer periphery of the motor case 1A of the motor, for example, the water jacket 1 is positioned on the outer periphery of the motor 30 shown in FIGS. Recess 40 for performing
Is provided. When the water jacket 1 is attached to the outer periphery of the motor 30,
The above-mentioned divided bent jacket portions 2 and 3 are attached to each other by using the concave portion 40 of the positioning body 41 provided on the outer periphery of the motor 30 as a guide and are joined in a ring shape, whereby the annular water jacket 1 is formed on the outer periphery of the motor. Be attached.

Therefore, the water jacket 1 described above
Since it is completely independent of the motor 30 and is divided, the water jacket can be easily attached to motors of various sizes by preparing several types of sizes. Further, both the small diameter wall 20 and the large diameter wall 21 may be formed in an arc shape or an arc shape.

[0013]

Since the motor water cooling structure according to the present invention is configured as described above, the following effects can be obtained. That is, since the water jacket is constituted by a plurality of bendable bent jacket portions and is independent of the motor, it can be easily attached to and detached from the motor. Further, since each bent jacket portion is formed by press working and sheet metal working, manufacture is easy and inexpensive.

[Brief description of the drawings]

FIG. 1 is a sectional view of a motor showing a motor water cooling structure according to the present invention.

FIG. 2 is a configuration diagram showing a state where a water jacket is attached to the motor of FIG. 1;

FIG. 3 is a configuration diagram showing a first bent member of the water jacket of FIG. 2;

FIG. 4 is a configuration diagram showing a second bent member joined to the first bent member of FIG. 3;

FIG. 5 is a sectional view taken along line A-A ′ of FIGS. 3 and 4;

FIG. 6 is a bottom view showing each bent jacket portion of the water jacket in FIG. 2;

FIG. 7 is a configuration diagram illustrating the water jacket of FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Water jacket 1A Motor case 2, 3 Bent-shaped jacket part 6 Open end surface 7, 8 Bent-shaped member 20 Small diameter wall 21 Large diameter wall 21a Flat surface 40 Depression

Claims (6)

[Claims] 1. A motor water cooling structure having a water jacket (1) formed in a ring shape on the outer periphery of a motor case (1A), wherein the water jacket (1) has a bent shape in its entirety and a bent space inside. At least 2 having (10)
A motor water cooling structure characterized in that a plurality of bent jacket portions (2, 3) are connected in a ring shape and water is supplied into each of the bent jacket portions (2, 3). 2. Each of the bent jacket portions (2, 3) has a pair of bent members (7, 8) having an open end surface (6) having one end surface opened in the axial direction and having a concave cross section. The open end faces
(6) The motor water cooling structure according to claim 1, wherein the motor water cooling structure has a configuration in which the members are integrated by welding so as to join each other. 3. Each of the bent members (7, 8) has a small-diameter wall (20) and a large-diameter wall (21) outside the small-diameter wall (20).
(20) is an arc, and the large-diameter wall of each of the bent members (7, 8)
The motor water cooling structure according to claim 1 or 2, wherein (21) has a plurality of planes (21a). 4. A recess (4) for positioning the water jacket (1) is formed on the outer periphery of the motor case (1A).
0) is formed.
Motor water cooling structure as described. 5. The motor water cooling according to claim 1, wherein the water jacket (2) is constituted by a plurality of bent jacket portions (2, 3) other than two. Construction. 6. The small-diameter wall (2) of each of the bent members (7, 8).
The motor water cooling structure according to any one of claims 1, 2, 4, and 5, wherein the (0) and the large-diameter wall (21) form an arc.