CN203289232U

CN203289232U - Insert structure

Info

Publication number: CN203289232U
Application number: CN2013202859218U
Authority: CN
Inventors: 江思敏; 金国华; 叶鹏; 李斌斌; 林海
Original assignee: HANGZHOU WAHAHA TECHNOLOGY Co Ltd
Current assignee: HANGZHOU WAHAHA TECHNOLOGY Co Ltd
Priority date: 2013-05-23
Filing date: 2013-05-23
Publication date: 2013-11-13
Anticipated expiration: 2023-05-23

Abstract

The utility model discloses an insert structure which comprises an annular main body, and an annular projection and three bar-shaped projections arranged on the outer surface of the main body. The annular projection is distributed along the circumferential direction of the main body, and each bar-shaped projection is distributed along the axial direction of the main body. The cross section of the bar-shaped projection is of an isosceles trapezoid, wherein the tail end of the annular projection is placed in the upper side of the trapezoid, and the end where the annular projection contacts with the outer surface of the main body is placed in the lower side of the trapezoid. The insert structure is tightly combined with die castings to prevent axial sliding and radial rotation of an insert, thereby avoiding loosening and falling off of the insert during use; and the insert structure is simple, cheap and highly practical.

Description

A kind of insert structure

Technical field

The utility model relates to a kind of securing member, refers in particular to a kind of insert structure of die casting for the servomotor end cap.

Background technology

The end cap of servomotor is generally the die casting aluminum component, and because end cap inner ring need contact with bearing, for intensity and the resistance to wear that improves the bearing junction, common need embedding ratio casting aluminium material intensity on the end cap die casting is higher, the better metal insert of resistance to wear.Inserts and foundry goods body in conjunction with tightness degree, most important to the performance of the quality of whole of end cap and motor.But traditional insert structure, on the one hand, while being pressed into bearing on end cap, can produce very large axial force, can cause endwisely slipping of inserts even to come off; On the other hand, in motor operation course, be subject to the effect of axial force and the circumferencial direction power of bearing due to inserts, exist inserts and end cap body circumferentially mobile phenomenon occurs.China Patent Publication No. CN201181615Y, open day on January 14th, 2009, name is called in the utility model patent of " inserts " and discloses a kind of inserts, its structure comprises body, in the middle of body, a screwed hole is set, its main points are that described body upper end also is provided with expansion face, body exterior also is provided with groove, and it is excessive that described body outer ring surface also is provided with circular arc.This insert structure is simple, is combined with epoxy insulator closely, and the junction of inserts and epoxy insulator, be difficult for discharge, be not prone to crackle.But this structure is comparatively complicated, and the scope of application is less, can not apply on the die casting aluminum component of servomotor.

The utility model content

The purpose of this utility model is to overcome the defect that the inserts of die casting in prior art easily endwisely slips or comes off, provide a kind of and the compact inserts of die casting body, this inserts can bear larger axial and circumferential active force, and the phenomenon that inserts is loosening or come off does not in use occur.

The purpose of this utility model is to be achieved by following technical proposals:

A kind of insert structure, comprise body, and body is shape ringwise, and described external surface or inner surface are provided with at least one annular protrusion and several strip bulges, and single annular protrusion distributes along the body circumferencial direction, and single strip bulge is along the axial distribution of body.Inserts machines in advance, then is molded into whole together with the die casting body when the foundry goods body is cast, and annular protrusion is used for preventing endwisely slipping of inserts, and the bar shaped inserts is used for preventing the radial rotating of inserts; Inserts can be combined with die casting by annular protrusion and the strip bulge of outer surface, also can be by annular protrusion and strip bulge and the die casting laminating of inner surface, and the structure of concrete inserts is adjusted flexibly according to different die castings.

As a kind of preferred version, be uniformly distributed between a plurality of annular protrusions, be uniformly distributed between a plurality of strip bulges.Equally distributed being designed with is beneficial to more convenient the reaching firmly that inserts is combined with die casting.

As a kind of preferred version, the cross section of annular protrusion is rectangle or trapezoidal.

As a kind of preferred version, the cross section of strip bulge is isosceles trapezoid, and trapezoidal upper base is the end of strip bulge, and trapezoidal bottom is the contacted end of strip bulge and this external surface.Trapezoidal design transition is mild, is not prone to crackle.

As a kind of preferred version, the quantity of strip bulge is at least 3.Design more than 3 further makes inserts occur that the possibility of radial rotating reduces, and has reduced strip bulge by the possibility of fatigue rupture.

The beneficial effects of the utility model are that insert structure is combined with die casting closely, can prevent endwisely slipping and radial rotating of inserts, the phenomenon that in having avoided using, the inserts generation is become flexible or come off.And this insert structure is simple, and is cheap, practical.

Description of drawings

Fig. 1 is the insert structure schematic diagram that this external surface of the utility model is provided with projection;

Fig. 2 is the insert structure schematic diagram that the utility model body internal surface is provided with projection;

Fig. 3 is the schematic cross-section of strip bulge of the present utility model;

Fig. 4 is the schematic cross-section of annular protrusion of the present utility model.

Wherein: 1, body, 2, strip bulge, 3, annular protrusion.

Embodiment

Below in conjunction with drawings and Examples, the utility model is further described.

Embodiment 1: a kind of insert structure, its structural representation as shown in Figure 1, comprise body 1, body is shape ringwise, described external surface is provided with 1

annular protrusion

2 and 3 strip bulges 3, and single annular protrusion distributes along the body circumferencial direction, and single strip bulge is along the axial distribution of body.As shown in Figure 3, the cross section of strip bulge is isosceles trapezoid to the schematic cross-section of strip bulge, and trapezoidal upper base is the end of annular protrusion, and trapezoidal bottom is the contacted end of annular protrusion and this external surface; As shown in Figure 4, the cross section of annular protrusion is rectangle to the schematic cross-section of annular protrusion.

Inserts machines in advance, then when casting, the foundry goods body is molded into whole together with the die casting body, inserts is combined with die casting by annular protrusion and the strip bulge of outer surface, prevents endwisely slipping and radial rotating of inserts, and in having avoided using, phenomenon loosening or that come off occurs inserts.

Embodiment 2: a kind of insert structure, its structural representation as shown in Figure 2, body internal surface is provided with 1 annular protrusion and 3 strip bulges, inserts is combined with die casting by annular protrusion and the strip bulge of inner surface, prevent endwisely slipping and radial rotating of inserts, in having avoided using, phenomenon loosening or that come off occurs in inserts.Other structure and using method are identical with embodiment 1.

The above embodiment only expresses one embodiment of the present invention, and so it is not intended to limiting the invention, and all employings are equal to replaces or technical scheme that the mode of equivalent transformation obtains, in protection range of the present utility model.

Claims

1. an insert structure, comprise body, and body is shape ringwise, it is characterized in that, described external surface or inner surface are provided with at least one annular protrusion and several strip bulges, and single annular protrusion distributes along the body circumferencial direction, and single strip bulge is along the axial distribution of body.

2. a kind of insert structure according to claim 1, is characterized in that, is uniformly distributed between a plurality of annular protrusions, is uniformly distributed between a plurality of strip bulges.

3. a kind of insert structure according to claim 2, is characterized in that, the cross section of described annular protrusion is rectangle or trapezoidal.

4. a kind of insert structure according to claim 2, is characterized in that, the cross section of described strip bulge is isosceles trapezoid, and trapezoidal upper base is the end of strip bulge, and trapezoidal bottom is the contacted end of strip bulge and this external surface.

5. according to claim 3 or 4 described a kind of insert structures, is characterized in that, the quantity of described strip bulge is at least 3.