CN111741636B - High-strength PBT/PC plastic alloy shell for household appliances - Google Patents

High-strength PBT/PC plastic alloy shell for household appliances Download PDF

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Publication number
CN111741636B
CN111741636B CN202010763971.7A CN202010763971A CN111741636B CN 111741636 B CN111741636 B CN 111741636B CN 202010763971 A CN202010763971 A CN 202010763971A CN 111741636 B CN111741636 B CN 111741636B
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CN
China
Prior art keywords
side wall
heat dissipation
cover plate
rod
wall
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Application number
CN202010763971.7A
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Chinese (zh)
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CN111741636A (en
Inventor
房强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Zhapu Plastic Products Co ltd
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Zhejiang Zhapu Plastic Products Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Priority to CN202010763971.7A priority Critical patent/CN111741636B/en
Publication of CN111741636A publication Critical patent/CN111741636A/en
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Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00Casings, cabinets or drawers for electric apparatus
    • H05K5/02Details
    • H05K5/0217Mechanical details of casings
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/64Constructional details of receivers, e.g. cabinets or dust covers
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00Casings, cabinets or drawers for electric apparatus
    • H05K5/02Details
    • H05K5/0213Venting apertures; Constructional details thereof
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00Casings, cabinets or drawers for electric apparatus
    • H05K5/02Details
    • H05K5/03Covers
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00Constructional details common to different types of electric apparatus
    • H05K7/20Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20009Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
    • H05K7/20127Natural convection
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00Constructional details common to different types of electric apparatus
    • H05K7/20Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2039Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
    • H05K7/20409Outer radiating structures on heat dissipating housings, e.g. fins integrated with the housing

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Air-Flow Control Members (AREA)

Abstract

The invention discloses a high-strength PBT/PC plastic alloy shell of a household appliance, which comprises a top wall, a bottom wall, a rear side wall, a left side wall and a right side wall, wherein the top wall, the bottom wall, the rear side wall, the left side wall and the right side wall are enclosed to form a heat dissipation cavity, a heat dissipation hole is formed in the top wall, a heat dissipation cover plate is arranged on the heat dissipation hole, the heat dissipation cover plate is connected with a supporting rod, the supporting rod stretches into the heat dissipation cavity, and the left side wall and/or the right side wall are provided with thermal bimetal which is connected with the supporting rod.

Description

High-strength PBT/PC plastic alloy shell for household appliances
Technical Field
The invention belongs to the field of household appliances, and particularly relates to a high-strength PBT/plastic alloy shell of a household appliance.
Background
Most of the electric appliances can generate heat after long use, so that the normal operation of the electric appliances can be guaranteed through timely heat dissipation, the heat dissipation requirements of most of the electric appliances are higher, the thickness of the electric appliances is thinner and thinner due to the limitation of the volume of the electric appliances, such as a current household intelligent television, the electric appliances are strong in performance, large in power consumption and large in heat productivity, the space is small, an active heat dissipation fan cannot be installed usually, and a plurality of heat dissipation holes are formed in the rear side face of the current television shell.
Some televisions have radiating holes facing the wall behind the televisions horizontally, the mode is unfavorable for the flow of hot air, and the other radiating holes are vertical upwards, so that heat flows upwards along the natural movement direction of the televisions, the mode dissipates heat faster, but the radiating holes also become inlets for dust to enter in families, particularly when the televisions are placed in a horizontal type for use, dust such as fluff generated by various cloths in the horizontal type enters the televisions through the radiating holes and is attached to a circuit board of the televisions, the back of the televisions is like a cotton quilt, the radiating effect is poorer and worse, and the service life of the televisions is greatly reduced.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the electric heating device which can automatically open or close the heat dissipation holes according to the use heating condition of the electric appliance, namely, the electric heating device can effectively dissipate heat, has small occupied space, does not need extra power, and can prevent dust from entering and attaching to a circuit board when the electric heating device is not used for a long time.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a high strength household electrical appliances PBT/PC plastic alloy casing, includes roof, diapire, back lateral wall, left side wall and right side wall, and roof, diapire, back lateral wall, left side wall and right side wall enclose and close and form the heat dissipation chamber, the louvre has been seted up on the roof, be provided with the heat dissipation apron on the louvre, the heat dissipation apron is connected with the bracing piece, and the bracing piece stretches into the heat dissipation intracavity, be provided with hot bimetal on left side wall and/or the right side wall, hot bimetal connecting support pole.
Further, the left side wall and the right side wall are respectively provided with a support shaft, the support shafts are rotatably connected with a swing rod, one end of each support rod is hinged with the swing rod, and the end of each thermal bimetal is connected with the swing rod.
Further the hot bimetal spiral winding takes a spiral shape.
And one side of the heat dissipation cover plate is hinged with the top wall.
Further, an air inlet hole is formed in the bottom wall, an air inlet cover plate is arranged on the air inlet hole, one side of the air inlet cover plate is hinged with the bottom wall, a connecting rod is hinged between the air inlet cover plate and the swing rod, the connecting rod and the supporting rod are respectively located at two ends of the swing rod, and the middle of the swing rod is connected with the supporting shaft.
Further, the moment of the connecting rod to the swinging rod is not smaller than the moment of the supporting rod to the swinging rod.
Further, grooves for accommodating the heat dissipation cover plate and the air inlet cover plate are respectively formed in the top wall and the bottom wall.
And a plurality of radiating fins are further arranged on the rear side wall towards the radiating cavity, and the radiating fins are arranged along the vertical direction.
Further, a connecting plate is arranged on one side of the plurality of radiating fins, which faces the rear side wall, and the connecting plate is embedded into the rear side wall.
Further, the top wall, the bottom wall, the rear side wall, the left side wall and the right side wall are formed by injection molding of PBT or PC plastic.
Compared with the prior art, the invention has the beneficial effects that:
The openable heat radiation cover plate is arranged, so that when the temperature in the shell is low, the heat radiation cover plate covers the heat radiation holes to prevent dust from falling onto devices such as a circuit board and the like in the heat radiation cavity from the heat radiation holes;
the heat bimetal is used as a power source for driving the heat radiating cover plate, so that the heat radiating cover plate occupies small space, can be automatically opened or closed according to the temperature, and has low use and maintenance cost;
the spiral winding of the spiral-shaped hot bimetal can increase the extension length of the hot bimetal in a limited space, so that the opening angle of the heat radiation cover plate is ensured to be enough;
The air inlet cover plate arranged at the air inlet hole can be synchronously opened or closed with the heat radiation cover plate, and meanwhile, the gravity of the heat radiation cover plate can be balanced, so that the force required by the hot bimetal when driving the swing rod is smaller, and the heat radiation cover plate and the air inlet cover plate are more sensitive to open or close;
When the air inlet cover plate is opened, the air inlet hole and the heat dissipation hole form an air flow channel, and cold air enters from the air inlet hole at the lower part and leaves from the heat dissipation hole at the upper part, so that heat is quickly taken away to achieve the cooling purpose;
The heat dissipation fins are arranged without additionally increasing the size of the shell, and the heat dissipation efficiency can be increased;
the shell formed by injection molding of PBT or PC plastic has high strength and small creep.
Drawings
FIG. 1 is a cross-sectional view of a PBT/PC plastic alloy housing for a high-strength household appliance according to the present invention;
fig. 2 is a top view of the PBT/PC plastic alloy housing of the high strength household appliance of the present invention.
Reference numerals: 1. a top wall; 12. a heat radiation hole; 2. a rear sidewall; 3. a bottom wall; 31. an air inlet hole; 4. a heat radiation fin; 5. a left side wall; 6. a right side wall; 7. a heat-dissipating cover plate; 8. an air inlet cover plate; 9. a support shaft; 10. swing rod; 11. a thermal bimetal; 107. a support rod; 108. and (5) connecting a rod.
Detailed Description
An embodiment of the PBT/PC plastic alloy housing for a high strength household appliance according to the present invention will be further described with reference to fig. 1 and 2.
In the description of the present invention, it should be noted that, for the azimuth words such as the terms "center", "transverse (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the azimuth and positional relationships are based on the azimuth or positional relationships shown in the drawings, only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and should not be construed as limiting the specific protection scope of the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features. Thus, the definition of "a first", "a second" feature may explicitly or implicitly include one or more of such feature, and in the description of the present invention, the meaning of "a number", "a number" is two or more, unless otherwise specifically defined.
The utility model provides a high strength household electrical appliances PBT/PC plastic alloy casing, includes roof 1, diapire 3, back lateral wall 2, left side wall 5 and right lateral wall 6, and roof 1, diapire 3, back lateral wall 2, left side wall 5 and right lateral wall 6 enclose and close and form the heat dissipation chamber, the louvre 12 has been seted up on the roof 1, be provided with heat dissipation apron 7 on the louvre 12, heat dissipation apron 7 is connected with bracing piece 107, and bracing piece 107 stretches into the heat dissipation intracavity, be provided with hot bimetal 11 on left side wall 5 and/or the right lateral wall 6, hot bimetal 11 connect bracing piece 107.
As shown in fig. 2, in this embodiment, the preferred heat dissipation holes 12 are in the shape of a strip, and one or more heat dissipation cover plates 7 may be connected to each other by a connecting rod if there are a plurality of heat dissipation holes, in this embodiment, a heat dissipation hole 12 and a heat dissipation cover plate 7 are taken as an example, and preferably, a thermal bimetal 11 is disposed on each of the left side wall 5 and the right side wall 6.
When the electric appliance is not used, the temperature in the heat dissipation cavity is low, the heat bimetal 11 is almost not deformed, when the electric appliance works, the temperature in the heat dissipation cavity rises, the heat bimetal 11 deforms, so that the support rod 107 pushes up the heat dissipation cover plate 7, the heat dissipation cover plate 7 enables the heat dissipation hole 12 to be opened, and heat rapidly flows upwards and is dissipated through the heat dissipation hole 12; after the temperature is reduced, the thermal bimetal 11 is restored, the supporting rod 107 loses the drive of the thermal bimetal 11 to jack up, the heat radiation cover plate 7 is covered on the heat radiation hole 12, and the heat radiation hole 12 is closed.
The preferred left side wall 5 and right side wall 6 of this embodiment are provided with the back shaft 9, set up on the back shaft 9 and rotate and be connected with pendulum rod 10, bracing piece 107 one end is articulated with pendulum rod 10, and the tip and the pendulum rod 10 of hot bimetal 11 are connected, that is to say, when having pendulum rod 10, hot bimetal 11 is not directly connected with bracing piece 107, and hot bimetal 11 is through driving pendulum rod 10, and pendulum rod 10 drives bracing piece 107 again and moves in proper order.
The preferable hot bimetal 11 is spirally wound in a spiral shape, and when the spiral shape is installed, one end of a spiral shape bimetal inner ring is fixed with the left side wall 5, the right side wall 6 or the supporting shaft 9, and one end of an outer ring is fixedly connected with the swing rod 10; the overall deformation of the volute-shaped thermal bimetal 11 is larger when the temperature changes, particularly one end of the outer end, which is in contact with the swing rod 10, is deformed greatly, and the opening angle of the heat radiating cover plate 7 is larger.
Preferably, one side of the heat dissipating cover 7 is hinged to the top wall 1, and the supporting rod 107 is also hinged to the heat dissipating cover 7.
Of course, the heat dissipating cover plate 7 may be not hinged to the top wall 1, but rather, may be covered above, and at this time, the support rod 107 is fixedly connected to the heat dissipating cover plate 7, and a guiding through hole is formed in the top wall 1, the support rod 107 penetrates through the guiding through hole, and when the support rod 107 is lifted up, the heat dissipating cover plate 7 integrally moves upward to be separated from the top wall 1.
An air inlet hole 31 is formed in the bottom wall 3, an air inlet cover plate 8 is arranged on the air inlet hole 31, one side of the air inlet cover plate 8 is hinged with the bottom wall 3, a connecting rod 108 is hinged between the air inlet cover plate 8 and the swing rod 10, the connecting rod 108 and the supporting rod 107 are respectively located at two ends of the swing rod 10, and the middle part of the swing rod 10 is connected with the supporting shaft 9.
When the thermal bimetal 11 stretches, the thermal bimetal 11 pushes the swing rod 10 to rotate anticlockwise, at the same time, the heat radiating cover plate 7 is opened, and meanwhile, the air inlet cover plate 8 is also opened, so that the air inlet hole 31 is communicated with the heat radiating hole 12, a heat radiating channel communicated with the heat radiating cavity is formed, and heat is quickly taken away; and through setting up air inlet cover plate 8 and connecting rod 108, can also balance the heat dissipation apron 7 and the applied power of bracing piece 107 to pendulum rod 10, the hot bimetal 11 only need less power can make pendulum rod 10 clockwise or anticlockwise swing.
The moment of the connecting rod 108 to the swing rod 10 is preferably not less than the moment of the supporting rod 107 to the swing rod 10, when the electric appliance does not work, the volute-shaped thermal bimetal 11 is in a contracted state, and the swing rod 10 can rotate clockwise by the pressure of the heat radiation cover plate 7 and the supporting rod 107, namely, the heat radiation cover plate 7 and the air inlet cover plate 8 are ensured to be in a closed state at the moment; in this embodiment, the difference between the moment of the swing rod 10 and the moment of the swing rod 107 and the moment of the connecting rod 108 are not too large, so that the thermal bimetal 11 can conveniently drive the swing rod 10 to rotate.
The support rods 107 and the connecting rods 108, which are preferred in this embodiment, are symmetrically arranged about the support shaft 9.
In this embodiment, grooves for accommodating the heat dissipating cover plate 7 and the air inlet cover plate 8 are respectively formed in the top wall 1 and the bottom wall 3, the grooves on the top wall 1 are used for accommodating the heat dissipating cover plate 7, and the grooves on the bottom wall 3 are used for accommodating the air inlet cover plate 8, so that when the heat dissipating cover plate 7 and the air inlet cover plate 8 close the heat dissipating holes 12 and the air inlet holes 31, the surfaces of the top wall 1 and the bottom wall 3 are flat, and leakage is prevented.
In this embodiment, a plurality of heat dissipation fins 4 are preferably disposed on the rear sidewall 2 toward the heat dissipation cavity, the heat dissipation fins 4 are disposed along the vertical direction, the heat dissipation fins 4 in this embodiment are made of aluminum, the heat dissipation fins 4 are disposed in the heat dissipation cavity, the volume and the occupied space of the housing do not need to be additionally increased, a heat dissipation channel can be formed between two adjacent heat dissipation fins 4, a chimney effect can be formed when the heat dissipation hole 12 and the air inlet hole 31 are opened, and the heat dissipation efficiency is increased.
The preferred side of the plurality of heat dissipation fins 4 facing the rear side wall 2 is provided with a connecting plate, the connecting plate is embedded into the rear side wall 2, the top wall 1, the bottom wall 3, the rear side wall 2, the left side wall 5 and the right side wall 6 are preferably formed by injection molding of PBT or PC plastic alloy, and the connecting plate is directly wrapped by the fused rear side wall 2 during injection molding production.
In this embodiment, the top wall 1, the bottom wall 3, the rear side wall 2, the left side wall 5 and the right side wall 6 are integrally formed.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above examples, and all technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to the present invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.

Claims (4)

1. A high strength household electrical appliances PBT/PC plastic alloy casing, its characterized in that: the heat dissipation device comprises a top wall, a bottom wall, a rear side wall, a left side wall and a right side wall, wherein the top wall, the bottom wall, the rear side wall, the left side wall and the right side wall are enclosed to form a heat dissipation cavity, a heat dissipation hole is formed in the top wall, a heat dissipation cover plate is arranged on the heat dissipation hole, the heat dissipation cover plate is connected with a support rod, the support rod stretches into the heat dissipation cavity, and the left side wall and/or the right side wall are provided with thermal bimetal which is connected with the support rod;
The left side wall and the right side wall are respectively provided with a support shaft, the support shafts are rotatably connected with a swing rod, one end of each support rod is hinged with the swing rod, and the end of each hot bimetal is connected with the swing rod;
the hot bimetal spiral winding is in a volute shape;
One side of the heat dissipation cover plate is hinged with the top wall;
An air inlet hole is formed in the bottom wall, an air inlet cover plate is arranged on the air inlet hole, one side of the air inlet cover plate is hinged with the bottom wall, a connecting rod is hinged between the air inlet cover plate and the swing rod, the connecting rod and the supporting rod are respectively positioned at two ends of the swing rod, and the middle part of the swing rod is connected with a supporting shaft;
The moment of the connecting rod to the swinging rod is not smaller than the moment of the supporting rod to the swinging rod;
Grooves for accommodating the heat radiation cover plate and the air inlet cover plate are respectively formed in the top wall and the bottom wall.
2. The high strength household appliance PBT/PC plastic alloy housing of claim 1, wherein: and a plurality of radiating fins are arranged on the rear side wall towards the radiating cavity, and the radiating fins are arranged along the vertical direction.
3. The high strength household appliance PBT/PC plastic alloy housing of claim 2, wherein: and a connecting plate is arranged on one side of the plurality of radiating fins, facing the rear side wall, and is embedded into the rear side wall.
4. A high strength household appliance PBT/PC plastic alloy housing according to any of claims 1-3, characterized in that: the top wall, the bottom wall, the rear side wall, the left side wall and the right side wall are formed by injection molding of PBT or PC plastics.
CN202010763971.7A 2020-08-01 2020-08-01 High-strength PBT/PC plastic alloy shell for household appliances Active CN111741636B (en)

Priority Applications (1)

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CN202010763971.7A CN111741636B (en) 2020-08-01 2020-08-01 High-strength PBT/PC plastic alloy shell for household appliances

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Application Number Priority Date Filing Date Title
CN202010763971.7A CN111741636B (en) 2020-08-01 2020-08-01 High-strength PBT/PC plastic alloy shell for household appliances

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CN111741636B true CN111741636B (en) 2024-05-28

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1162110A (en) * 1995-04-19 1997-10-15 大宇电子株式会社 Device for opening-closing radiating component using marmen
KR19990012491A (en) * 1997-07-29 1999-02-25 배순훈 V Sial's Automatic Chiller
JP2008300925A (en) * 2007-05-29 2008-12-11 Funai Electric Co Ltd Heat discharge structure, and television receiver with heat discharge structure
CN207410654U (en) * 2017-10-27 2018-05-25 新乡市振源电器股份有限公司 A kind of soft start controller radiator structure
CN212786163U (en) * 2020-08-01 2021-03-23 浙江乍浦塑料制品股份有限公司 High-strength PBT/PC plastic alloy shell for household appliances

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1162110A (en) * 1995-04-19 1997-10-15 大宇电子株式会社 Device for opening-closing radiating component using marmen
KR19990012491A (en) * 1997-07-29 1999-02-25 배순훈 V Sial's Automatic Chiller
JP2008300925A (en) * 2007-05-29 2008-12-11 Funai Electric Co Ltd Heat discharge structure, and television receiver with heat discharge structure
CN207410654U (en) * 2017-10-27 2018-05-25 新乡市振源电器股份有限公司 A kind of soft start controller radiator structure
CN212786163U (en) * 2020-08-01 2021-03-23 浙江乍浦塑料制品股份有限公司 High-strength PBT/PC plastic alloy shell for household appliances

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