CN201247988Y - Motor - Google Patents

Abstract

The utility model relates to an electric motor, in particular to a fit structure between an electric motor cabinet and an end cap, which solves the problem brought by the way that the cabinet and the end cap are made of different materials and the cabinet and the end cap adopt a single spigot fit way, i.e. because the heat expansion coefficients of two materials are different, the fit type of the single spigot fit changes, and the fit strength is influenced. The electric motor comprises a cabinet and an end cap, wherein the end surface of the end cap matched with the cabinet is provided with a spigot ring, the end surface of the cabinet matched with the end cap is provided with an annular groove, the spigot ring on the end cap extends into the annular groove on the end surface of the cabinet so as to cause the outer circle surface or the inner circle surface of the spigot ring of the end cap to form the spigot fit together with the annular groove on the end surface of the cabinet. Through changing the fit structure between the electric motor cabinet and the end cap, even the double-spigot fit way is adopted between the electric motor cabinet and the end cap, when the cabinet and the end cap are made of different materials, the fit strength between the cabinet and the end cap is increased under the environment of temperature change, thereby the integral property of the electric motor is improved.

Description

A kind of motor

Technical field

The utility model relates to motor, particularly the fit structure between electric machine stand and the end cap.

Background technology

On electric motor end cap and the end face that support cooperates the seam ring is arranged.When the end cap of existing motor cooperated with electric machine stand, the outer round surface of the seam ring on the end cap cooperated with the support surface of internal cavity, cooperated (as shown in Figure 1) and form single seam.When support and end cap were made by different materials, when variations in temperature, because two kinds of material coefficient of thermal expansion coefficient differences, the cooperation type that this single seam is cooperated changed, thereby influence cooperates intensity.

Summary of the invention

The utility model for solve when support and end cap is made by different materials and support and end cap between cooperate the problem of being brought for single seam, a kind of motor is provided.For double stopper cooperates, when making support and end cap be different materials, in the variations in temperature environment, increase the intensity that cooperates between support and the end cap between this electric machine stand and the end cap.

The utility model is to adopt following technical scheme to realize: a kind of motor, comprise support and end cap, on end cap and the end face that support cooperates the seam ring is arranged, on support and end face that end cap cooperates, have cannelure, seam ring on the end cap stretches in the cannelure on the support end face, and makes the outer round surface of end cap seam ring or internal circular surfaces and cannelure on the support end face form seam to cooperate.By architecture advances, make and form the double stopper structure between the support of motor described in the utility model and the end cap.During concrete the manufacturing, normal temperature is selected the outer round surface of end cap seam ring down, and still to be internal circular surfaces cooperate with cannelure formation seam on the support end face, decide according to the thermal coefficient of expansion of support and cap material; When the thermal coefficient of expansion of support during greater than the thermal coefficient of expansion of end cap, the outer round surface of end cap seam ring forms seam with cannelure on the support end face and cooperates; Otherwise the cannelure on the internal circular surfaces of end cap seam ring and the support end face forms seam and cooperates.

The utility model cooperates even form double stopper between the two by changing the fit structure between electric machine stand and the end cap, when making support and end cap be different materials, in the variations in temperature environment, has increased cooperation intensity between the two.Thereby improved the overall performance of motor.

Description of drawings

Fig. 1 is the support of existing motor and the fit structure schematic diagram between the end cap;

Fig. 2 is the support of motor described in the utility model and the fit structure schematic diagram between the end cap (is example greater than the thermal coefficient of expansion of end cap with the thermal coefficient of expansion of support);

Fig. 3 is a motor temperature described in the utility model structural representation when it goes up the seam inefficacy when raising;

Fig. 4 is elevated to structural representation after to a certain degree seam forms at present for motor temperature described in the utility model;

Embodiment

A kind of motor, comprise support 1 and end cap 2, on end cap and the end face that support cooperates seam ring 3 is arranged, on support and end face that end cap cooperates, have cannelure 4, seam ring 3 on the end cap stretches in the cannelure 4 on the support end face, and makes the outer round surface of end cap seam ring 3 or internal circular surfaces and cannelure 4 on the support end face form seams to cooperate.This embodiment is example with the thermal coefficient of expansion of support greater than the thermal coefficient of expansion of end cap, be under the normal temperature when assembling select the outer round surface of end cap seam ring 3 to cooperate with cannelure 4 formation seams on the support end face, promptly form and go up seam (as shown in Figure 2), along with the rising of temperature and support thermal coefficient of expansion greater than the end cap thermal coefficient of expansion, the last seam of support and end cap ineffective gradually (as shown in Figure 3); Along with the further rising of temperature, following seam forms and plays a supportive role (as shown in Figure 4).

Claims (1)

1, a kind of motor, comprise support (1) and end cap (2), on end cap and the end face that support cooperates seam ring (3) is arranged, it is characterized by: on support and end face that end cap cooperates, have cannelure (4), seam ring (3) on the end cap stretches in the cannelure (4) on the support end face, and makes the outer round surface of end cap seam ring (3) or internal circular surfaces and cannelure (4) on the support end face form seam to cooperate.

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