Composite product of high-filling plastic part

Abstract

The utility model discloses a composite product of a high-filling plastic part, which relates to the technical field of composite products and comprises a basic part, a middle part, a plastic part, a first positioning mechanism and a second positioning mechanism, the back surface of the middle part is connected with the front surface of the basic part, and the back surface of the plastic part is connected with the front surface of the middle part. The first positioning mechanism is arranged between the basic part and the middle part, and the second positioning mechanism is arranged between the middle part and the plastic part. According to the utility model, the vibration transmitted from the basic part to the plastic part is reduced through the middleware, so that the stability of the assembly is improved, and meanwhile, the middleware can provide thermal insulation or electric insulation between the basic part and the plastic part, so that the middleware can reduce mechanical stress caused by thermal expansion or non-uniform stress; in other words, the middle part can absorb most stress generated by shrinkage of the plastic part under the temperature change condition, so that cracks of the plastic part are effectively prevented from being generated within the range of the second positioning mechanism.

Description

TECHNICAL FIELD

[0001] The utility model relates to composite product technical field, especially a kind of composite product of high filling plastic parts. BACKGROUND

[0002] High filling plastic parts refer to the parts embedded with a kind of material in plastic matrix, and the embedded material can include permanent magnetic particles for manufacturing adhesive permanent magnets, soft magnetic particles (whose magnetic performance is determined by surrounding electromagnetic field), ceramic powder for manufacturing sealing gasket, and other powder or granular material, which is usually manufactured by injection molding process.

[0003] Since glueing cannot meet the safety requirements of plastic part fixation in many cases, plastic parts are usually directly injection molded onto the base body, however, under temperature change conditions, especially during the cooling process of high filling plastic after injection molding, shrinkage stress can be generated, which can cause cracks in the connecting area of plastic parts, and eventually can cause the plastic parts to tear off from the base body, for this purpose, a kind of composite product of high filling plastic parts is proposed. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of composite product of high filling plastic parts to solve the problems raised in the above background.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a kind of composite product of high filling plastic parts, comprising:

[0006] base piece;

[0007] intermediate piece, the back surface of the intermediate piece is connected with the front surface of the base piece;

[0008] plastic piece, the back surface of the plastic piece is connected with the front surface of the intermediate piece;

[0009] first positioning mechanism, the first positioning mechanism is arranged between the base piece and the intermediate piece;

[0010] second positioning mechanism, the second positioning mechanism is arranged between the intermediate piece and the plastic piece.

[0011] Preferably, the first positioning mechanism includes a support column, the support column is fixedly connected to the front surface of the base piece, and the base piece is embedded in the back surface of the intermediate piece.

[0012] Preferably, the first positioning mechanism includes:

[0013] second protruding piece, the second protruding piece is fixedly connected to the front surface of the base piece, the second protruding piece is arranged in annular array, and the second protruding piece is arranged with gradually widening free end.

[0014] The second clamping groove is arranged on the back surface of the intermediate part, and the second protruding part is arranged in the inner wall of the second clamping groove.

[0015] Preferably, the second positioning mechanism comprises:

[0016] The first protruding part is fixedly connected to the front surface of the intermediate part, and the first protruding part is arranged in an annular array, and the first protruding part is arranged in a gradually widened manner from the free end.

[0017] The first clamping groove is arranged on the back surface of the plastic part, and the first protruding part is arranged in the inner wall of the first clamping groove.

[0018] Preferably, the outer diameter of the plastic part is the same as the outer diameter of the intermediate part, and the inner diameter of the plastic part is the same as the inner diameter of the intermediate part.

[0019] Preferably, the outer diameter of the intermediate part is the same as the maximum outer diameter of the base part, and the inner diameter of the intermediate part is greater than the inner diameter of the base part.

[0020] The technical effects and advantages of the utility model are as follows:

[0021] The utility model discloses an intermediate part reduces the vibration of the base part to the plastic part, thereby improving the stability of the assembly, and the intermediate part can provide thermal insulation or electrical insulation between the base part and the plastic part, so that the intermediate part can reduce the mechanical stress caused by thermal expansion or uneven stress, that is, the intermediate part can absorb most of the stress generated by the shrinkage of the plastic part under the condition of temperature change, thereby preventing the crack of the plastic part in the range of the second positioning mechanism. DRAWINGS

[0022] Fig. 1 It is the structure schematic view of the utility model embodiment one.

[0023] Fig. 2 It is the structure schematic view of the utility model embodiment two.

[0024] In the drawing: 101, base part;102, intermediate part;103, plastic part;201, support;301, first protruding part;302, first clamping groove;401, second protruding part;402, second clamping groove. CONCRETE IMPLEMENTATION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application.

[0026] The present application provides a composite product of a high-filled plastic part as shown in Figs. 1-2 The present application provides a composite product of a high-filled plastic part as shown in

[0027] Embodiment one:

[0028] The first positioning mechanism is arranged between the base piece 101 and the intermediate piece 102, and the second positioning mechanism is arranged between the intermediate piece 102 and the plastic piece 103. The outer diameter of the plastic piece 103 is the same as the outer diameter of the intermediate piece 102, the inner diameter of the plastic piece 103 is the same as the inner diameter of the intermediate piece 102, the outer diameter of the intermediate piece 102 is the same as the maximum outer diameter of the base piece 101, and the inner diameter of the intermediate piece 102 is greater than the inner diameter of the base piece 101. The base piece 101 can be an integrally formed structure, preferably made of metal or plastic. The base piece 101 can also be manufactured by bending, turning or splicing technology. The base piece 101 in the present application is a metal stamping and bending part, which includes a sleeve-shaped part and an outwardly extending flange part. The base piece 101 is connected with the intermediate piece 102 through the first positioning mechanism, and the intermediate piece 102 is connected with the plastic piece 103 through the second positioning mechanism. The vibration transmitted from the base piece 101 to the plastic piece 103 can be reduced through the intermediate piece 102, thereby improving the stability of the assembly. At the same time, the intermediate piece 102 can provide thermal or electrical insulation between the base piece 101 and the plastic piece 103, thereby reducing the mechanical stress caused by thermal expansion or uneven stress. That is, the intermediate piece 102 can absorb most of the stress generated by the shrinkage of the plastic piece 103 under temperature changes, thereby preventing the generation of cracks in the plastic piece 103 within the range of the second positioning mechanism.

[0029] In this embodiment, the intermediate piece 102 is directly formed on the front surface of the base piece 101 by an injection molding process, so that the support 201 is potentially formed in the intermediate piece 102 during the injection molding process, thereby fixing the intermediate piece 102 to the base piece 101 and improving the stability of the intermediate piece 102.

[0030] The second positioning mechanism comprises a first protruding piece 301 and a first clamping groove 302. The first protruding piece 301 is fixedly connected to the front surface of the intermediate piece 102. The first protruding piece 301 is arranged in an annular array. The first protruding piece 301 is arranged in a gradually widened manner at the free end. The first clamping groove 302 is formed in the back surface of the plastic piece 103. The first protruding piece 301 is inserted into the inner wall of the first clamping groove 302. The shape of the first clamping groove 302 is matched with the shape of the first protruding piece 301. After the intermediate piece 102 is formed on the front surface of the base piece 101, the combined unit of the base piece 101 and the intermediate piece 102 is inserted into a mold. The plastic piece 103 is connected with the intermediate piece 102 in a compression molding manner. The first protruding piece 301 is inserted into the first clamping groove 302. Thus, the plastic piece 103 and the intermediate piece 102 are fixed. The stability of the plastic piece 103 is improved. The first protruding piece 301 arranged in an annular array can make the stress transmission more uniform, and the protection effect is better.

[0031] The utility model is especially suitable for fixing the annular or disc type plastic piece 103 such as a plastic bonded permanent magnet to the sleeve-shaped base piece 101. However, it is also applicable to other high filling degree plastic part fixing scenes. These plastic parts can be isotropic or anisotropic magnets. Thermoplastic or thermosetting plastic can be used as a bonding agent to embed permanent magnetic particles.

[0032] Embodiment two:

[0033] The utility model provides a kind of component, including base piece 101, intermediate piece 102, plastic piece 103, first positioning mechanism and second positioning mechanism, the back of intermediate piece 102 is connected with the front of base piece 101, the back of plastic piece 103 is connected with the front of intermediate piece 102, first positioning mechanism is arranged between base piece 101 and intermediate piece 102, second positioning mechanism is arranged between intermediate piece 102 and plastic piece 103, base piece 101 can be integrally formed structure, preferably made of metal or plastic, base piece 101 can also be manufactured by bending, turning or splicing technology, base piece 101 in the utility model is metal stamping bending component, its structure includes sleeve portion and outwardly extending flange portion, the outer diameter of plastic piece 103 is same with the outer diameter of intermediate piece 102, the inner diameter of plastic piece 103 is same with the inner diameter of intermediate piece 102, the outer diameter of intermediate piece 102 is same with the maximum outer diameter of base piece 101, the inner diameter of intermediate piece 102 is greater than the inner diameter of base piece 101, base piece 101 is connected with intermediate piece 102 by first positioning mechanism, intermediate piece 102 is connected with plastic piece 103 by second positioning mechanism, that is, vibration transmitted from base piece 101 to plastic piece 103 can be reduced by intermediate piece 102, so as to improve the stability of assembly, meanwhile, intermediate piece 102 can provide thermal insulation or electrical insulation between base piece 101 and plastic piece 103, so that intermediate piece 102 can reduce mechanical stress caused by thermal expansion or uneven stress, that is, intermediate piece 102 can absorb most of the stress generated by shrinkage of plastic piece 103 under temperature change condition, so as to be within the scope of second positioning mechanism, so as to effectively prevent crack generation of plastic piece 103.

[0034] Wherein, second positioning mechanism includes first protruding piece 301 and first clamping groove 302, first protruding piece 301 is fixedly connected to the front of intermediate piece 102, first protruding piece 301 is arranged in annular array, first protruding piece 301 is gradually widened at free end, first clamping groove 302 is opened in the back of plastic piece 103, first protruding piece 301 is inserted into the inner wall of first clamping groove 302, the shape of first clamping groove 302 matches the shape of first protruding piece 301, insert the combination unit of base piece 101 and intermediate piece 102 into mold, connect plastic piece 103 with intermediate piece 102 by compression molding, and first protruding piece 301 is inserted into first clamping groove 302, so as to fix plastic piece 103 with intermediate piece 102, so as to improve the stability of plastic piece 103, and first protruding piece 301 arranged in annular array, stress transmission is more uniform, and protection effect is better.

[0035] The first positioning mechanism comprises a second protruding piece 401 and a second clamping groove 402, the second protruding piece 401 is fixedly connected to the front face of the base piece 101, the second protruding piece 401 is arranged in an annular array, the second protruding piece 401 is arranged in a gradually widened manner at a free end, the second clamping groove 402 is formed in the back face of the intermediate piece 102, the second protruding piece 401 is inserted into the inner wall of the second clamping groove 402, the shape of the second clamping groove 402 is matched with the shape of the second protruding piece 401, in the second embodiment, the plastic piece 103 is connected with the intermediate piece 102 by compression molding, and then the intermediate piece 102 is connected with the base piece 101 by compression molding, so that the stability of the plastic piece 103 and the intermediate piece 102 is improved.

[0036] The utility model is especially suitable for fixing the annular or disc type plastic piece 103 such as a plastic bonded permanent magnet to the sleeve-shaped base piece 101, but is also suitable for other high filling degree plastic part fixing scenes, these plastic parts can be isotropic or anisotropic magnets, and thermoplastic or thermosetting plastic can be used as a bonding agent to embed permanent magnetic particles.

[0037] Finally, it should be noted that: the above only for preferred embodiment of the utility model has described, and does not limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiment, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part technical features, any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model, should be contained in the protection scope of the utility model.

Claims

1. A composite article of a high filled plastic part characterized in that, The utility model relates to a kind of plastic parts, including: Base piece (101); Middle piece (102), the back of the middle piece (102) is connected with the front of base piece (101); Plastic piece (103), the back of the plastic piece (103) is connected with the front of middle piece (102); First positioning mechanism, the first positioning mechanism is arranged between base piece (101) and middle piece (102); Second positioning mechanism, the second positioning mechanism is arranged between middle piece (102) and plastic piece (103).

2. A composite article of a high filled plastic part according to claim 1, wherein, The first positioning mechanism includes support (201), the support (201) is fixedly connected to the front of base piece (101), and the base piece (101) is embedded in the back of middle piece (102).

3. A composite article of a high filled plastic part according to claim 1, wherein, The first positioning mechanism includes: Second protruding piece (401), the second protruding piece (401) is fixedly connected to the front of base piece (101), the second protruding piece (401) is arranged in annular array, and the second protruding piece (401) is gradually widened at free end and arranged; Second clamping groove (402), the second clamping groove (402) is opened in the back of middle piece (102), the second protruding piece (401) is inserted in the inner wall of second clamping groove (402), and the shape of second clamping groove (402) is matched with the shape of second protruding piece (401).

4. A composite article of a high filled plastic part according to claim 1, wherein, The second positioning mechanism includes: First protruding piece (301), the first protruding piece (301) is fixedly connected to the front of middle piece (102), the first protruding piece (301) is arranged in annular array, and the first protruding piece (301) is gradually widened at free end and arranged; First clamping groove (302), the first clamping groove (302) is opened in the back of plastic piece (103), the first protruding piece (301) is inserted in the inner wall of first clamping groove (302), and the shape of first clamping groove (302) is matched with the shape of first protruding piece (301).

5. A high filled plastic part composite article according to claim 1, wherein, The outer diameter of the plastic piece (103) is same with the outer diameter of middle piece (102), and the inner diameter of the plastic piece (103) is same with the inner diameter of middle piece (102).

6. A high filled plastic part composite article according to claim 1, wherein, The outer diameter of the middle piece (102) is same with the maximum outer diameter of base piece (101), and the inner diameter of the middle piece (102) is greater than the inner diameter of base piece (101).

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