CN107484271A - Packaging method and structure of heat conducting strip with power terminal - Google Patents

Abstract

The invention discloses a packaging method and structure of a heat conduction strip with a power terminal, the packaging method of the invention enables the structure of the heat conduction strip with the power terminal to comprise: a carbon fiber yarn unit having a carbon fiber bonding end portion; a plastic sleeve, the length of which is shorter than that of the carbon fiber unit and coats the carbon fiber unit, and the plastic sleeve is provided with a plastic combination fracture part which shields a part of the carbon fiber combination end part; and a power terminal which is fixedly sleeved on the plastic combined fracture part and the carbon fiber combined end part and is provided with a terminal clamping section clamped with the plastic combined fracture part and a terminal conductive section in conductive contact with the carbon fiber combined end part. The invention mainly clamps the power terminal part on the thermoplastic plastic and partially contacts with the carbon fiber wire in a conductive manner, thereby improving the yield of manufacture and prolonging the service life of bending.

Description

Encapsulation method and structure of heat conducting strip with power terminal

technical field

The invention relates to a heat conduction strip, in particular to a packaging method and structure of a heat conduction strip with power terminals.

Background technique

Generally, thermal strips with flexible and thin characteristics are generally installed on clothing, knee pads, waist pads, gloves, insoles, earmuffs, or waist rests, etc., so as to provide warm covering for the human body.

Refer to the Chinese Taiwan Patent Application No. 99109336 to provide a "manufacturing method of a flexible flat strip heater using carbon fiber filaments as a heat source", which includes the following steps: (a) using a carbon fiber filament; (b) ) placing a thermoplastic material on opposite sides of the carbon fiber filaments; (c) bonding the thermoplastic materials to each other and wrapping the carbon fiber filaments therein by rolling and heating; and (d) having the carbon fiber filaments A power terminal is provided at opposite ends. The flexible flat strip heater can be widely used on small items such as clothes, waist protectors, gloves, etc., and large items such as blankets, quilts, etc., as a source of human body heating.

However, as shown in FIG. 1 , before the power terminal 11 of the heat conduction strip 10 is packaged, the carbon fiber filament 12 will have a bonding section 121 exposed at both ends of the thermoplastic sleeve 13 , and the power terminal 11 is packaged. In this case, the joint section 121 of the carbon fiber filament 12 is directly clamped and contacted. Therefore, the power terminal 11 is easy to pinch off the joint section 121 of the carbon fiber filament 12 during the packaging process, which highlights the defect of low manufacturing yield. In addition, just because the power terminal 11 is directly sandwiched and contacted with the bonding section 121 of the carbon fiber filament 12 during packaging, when the power terminal 11 is repeatedly bent relative to the thermoplastic sleeve 13, part of the carbon fiber The wire 12 is easily torn off by the power terminal, and even all the carbon fiber wires 12 will break, highlighting the defect of insufficient service life.

Contents of the invention

The object of the present invention is to provide a packaging method and structure of a heat conducting strip with power terminals, which mainly clamps the power terminals partly to thermoplastics and partly makes conductive contact with carbon fiber filaments, so as to improve the production yield and increase the bend. folded service life.

In order to achieve the aforementioned object, according to the present invention, a method for packaging a heat-conducting strip with power terminals includes the following steps: (a) taking a plastic sleeve wrapped with a carbon fiber unit, and the plastic sleeve has a plastic joint end The carbon fiber unit and the carbon fiber unit have a carbon fiber joint end covered by the plastic joint end; (b) use a positioning mold to clamp on the plastic sleeve, so that one end of the plastic sleeve is fixed; (c) use a The breaking mold is clamped on the plastic joint end, and the carbon fiber joint end is not clamped by the breaking mold; (d) pulling the breaking mold away from the positioning mold, so that the plastic joint end Partially fractured to form a plastic bonding fracture, and expose the carbon fiber bonding end to the plastic sleeve, wherein the plastic bonding fracture covers a part of the carbon fiber bonding end; and (e) take a power terminal sleeve to the The plastic joint fracture part and the carbon fiber joint end are pressurized so that the power supply terminal has a terminal clamping section clamped with the plastic joint fracture part and a terminal conductive section in conductive contact with the carbon fiber joint end.

In addition, in order to achieve the aforementioned purpose, according to the present invention, a structure of a heat conducting strip with power terminals is provided, comprising: a carbon fiber unit having a carbon fiber joint end; a plastic sleeve whose length is shorter than the length of the carbon fiber unit and cover the carbon fiber filament unit, and have a plastic joint fracture part that covers a part of the carbon fiber joint end; and a power terminal, which is fixed on the plastic joint fracture part and the carbon fiber joint end, and has a A terminal clamping section clamped by the combined fractured portion, and a terminal conductive section in conductive contact with the carbon fiber joint end.

Preferably, the maximum length of the plastic joint breaking portion is 3 mm, and the length of the power terminal is between greater than 3 mm and less than or equal to 10 mm.

Preferably, the power terminal has a thickness of at least 0.3mm.

Preferably, in step (d), the pulling force of the breaking die is at least 3kg/cm ² .

Preferably, in step (e), the width of the power terminal after being pressed is smaller than the width of the plastic sleeve.

Regarding the technology, means and other effects adopted in order to achieve the above-mentioned purpose in the present invention, a preferred feasible embodiment is given and described in detail in conjunction with the drawings as follows.

Description of drawings

Fig. 1 is a partial three-dimensional sectional view of a conventional heat conducting strip.

Fig. 2 is a flow chart of the present invention.

Fig. 3 is a schematic diagram of the present invention, showing the state that one end of the plastic sleeve is clamped by the positioning mold and the other end is clamped by the breaking mold.

FIG. 4 is a cross-sectional view taken along line 4-4 of FIG. 3 .

Fig. 5 is a schematic diagram of the present invention, showing the state where the plastic joint end of the plastic sleeve is pulled off to form a plastic joint fracture.

Fig. 6 is a schematic diagram of the present invention, showing the state before the power terminal is set.

Fig. 7 is a schematic diagram of the present invention, showing the state of the power terminal cover after being pressurized.

Fig. 8 is a schematic diagram of the present invention, showing the cross-sectional state of the power terminal after being pressurized.

Explanation of symbols in the accompanying drawings:

10 is a heat conducting strip; 11 is a power terminal; 12 is a carbon fiber wire; 121 is a joint section; 13 is a thermoplastic sleeve; 20 is a carbon fiber wire unit; 21 is a carbon fiber joint end; 211 is a length; 212 is a width; 30 is a plastic 31 is the plastic joint end; 311 is the length; 32 is the plastic breaking part; 321 is the length; 322 is the width; 33 is the width; 41 is the positioning mold; 42 is the breaking mold; 50 is the power terminal; 51 is the terminal Clamping section; 52 is the terminal conductive section; 53 is the length; 54 is the thickness; 55 is the width.

detailed description

The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In the following description, similar components are denoted by the same reference numerals.

Referring to Fig. 2 to Fig. 8, a method for packaging a heat conduction strip with power terminals provided by an embodiment of the present invention includes the following steps:

(a) Take a plastic sleeve 30 coated with a carbon fiber filament unit 20, and the plastic sleeve 30 has a plastic bonding end 31 and the carbon fiber filament unit 20 has a carbon fiber bonding end covered by the plastic bonding end 31 part 21; in this embodiment, the lengths 311, 211 of the plastic joint end 31 and the carbon fiber joint end 21 are both 6 mm.

(b) Utilize a positioning mold 41 to clamp on the plastic sleeve 30, so that one end of the plastic sleeve 30 is fixed.

(c) Utilize a breaking die 42 to clamp the plastic joint end 31, and the carbon fiber joint end 21 is not clamped by the breaking die 42; The end portion 21 is clamped on both sides of the plastic joint end portion 31, so as to avoid breaking the carbon fiber joint end portion 21 while performing the following steps.

(d) Pull the breaking mold 42 away from the positioning mold 41 to partially break the plastic joint end 31 to form a plastic joint fracture 32, and expose the carbon fiber joint end 21 to the plastic sleeve 30 , wherein the plastic joint fracture part 32 covers a part of the carbon fiber joint end part 21, that is, the plastic joint fracture part 32 has a part width 322 that is greater than the width 212 of the carbon fiber joint end part 21; in this embodiment, the The tensile force of the breaking die 42 is at least 3 kg/cm ² , and the length 321 of the plastic joint breaking portion 32 is 3 mm.

(e) Take a power terminal 50 and put it on the plastic joint fracture part 32 and the carbon fiber joint end part 21, and make the power terminal 50 have a terminal clamping section 51 clamped with the plastic joint fracture part 32 after pressurization , and a terminal conductive section 52 in conductive contact with the carbon fiber joint end 32; in the present embodiment, the length 53 of the power supply terminal 50 is 6 millimeters, but not limited thereto, between greater than 3 millimeters and less than or equal to 10 millimeters The thickness 54 of the power terminal 50 is 0.3 mm, and the width 55 of the power terminal 50 after pressure is smaller than the width 33 of the plastic sleeve 30 .

The above is the description of the flow of each step in the embodiment of the present invention. Therefore, the structure of a heat conducting strip with power terminals provided by the present invention is mainly composed of a carbon fiber unit 20, a plastic sleeve 30, and a power terminal 50, wherein:

The carbon fiber unit 20 has a carbon fiber joint end 21 .

The plastic sleeve 30 has a length 321 shorter than the length 211 of the carbon fiber unit 21 and covers the carbon fiber unit 20, and has a plastic joint breaking portion 32 that covers a part of the carbon fiber joint end 21; and

The power terminal 50 is sleeved on the plastic joint fracture portion 32 and the carbon fiber joint end portion 21, and has a terminal clamping section 51 clamped with the plastic joint fracture portion 32, and a joint end portion 21 with the carbon fiber The terminal conductor segment 52 is electrically contacted.

According to this, since the present invention forms the plastic cover 30 with a plastic joint breaking portion 32 that covers a part of the carbon fiber joint end 21, and exposes a part of the carbon fiber joint end 21 to the plastic cover 30, and makes the power supply When the terminal 50 is packaged, its terminal clamping section 51 is clamped on the plastic joint fracture part 32, and its terminal conductive section 52 is in conductive contact with the carbon fiber joint end 21 exposed on the plastic sleeve 20. Therefore, the power supply The terminal 50 is clamped on the plastic joint breaking part 32 and is in conductive contact with the carbon fiber joint end part 21 . The present invention prevents the power terminal 50 from being directly clamped to the carbon fiber unit 20 during the packaging process to cause the carbon fiber unit 20 to break through the design of the power terminal 50 being clamped on the plastic joint breaking portion 32, and Avoiding that when the power terminal 50 is repeatedly bent relative to the plastic sleeve 30, part or all of the carbon fiber unit 20 will be torn off by the power terminal 50. Accordingly, the present invention can indeed improve the production yield and increase the The purpose of the service life of the bend.

It is worth noting that, since the present invention sets the length 321 of the plastic joint fracture portion 32 to be the longest at 3 millimeters, it is mainly because when the length 321 of the plastic joint fracture portion 32 exceeds 3 millimeters, the power terminal 50 is in progress. During the welding process, the plastic joint breaking portion 32 will be melted, which will affect the stability of the power terminal 50 and the plastic sleeve 30 clamping each other.

Secondly, the present invention sets the length 53 of the power terminal 50 to be greater than 3 millimeters and less than 10 millimeters, which mainly enables the power terminal 50 to be clamped with the plastic joint fracture part 32 and can be connected with the carbon fiber filament when packaged. The unit 20 is in conductive contact, so that the heat-conducting strip has the effect of improving the yield rate of production and increasing the service life of bending on the basis of heat generation.

Furthermore, the present invention sets the thickness 54 of the power terminal 50 to at least 0.3 mm, which mainly avoids the defects of excessive resistance and excessive local heat storage caused by the heat conducting strip after the power terminal 50 is packaged.

In summary, the above-mentioned embodiments and accompanying drawings are only preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Any modifications made within the spirit and principles of the present invention, Equivalent replacements, improvements, etc., should all be included in the protection scope of the present invention.

Claims (9)

1. a kind of method for packing for the heat conduction bar for having power supply terminal, it is characterised in that comprise the steps of：

(a) plastic sheath for being coated with carbon fiber wire unit is taken, and the plastic sheath has a plastics combination end and the carbon fiber wire list Member has a carbon fiber combination end coated by the plastics combination end；

(b) it is clamping on the plastic sheath using a jig, fixed the plastic sheath one end；

(c) to break mould using one clamping in the plastics combination end, and by this, to break mould institute not clamping for the carbon fiber combination end；

(d) this is broken into mould to pull towards away from the jig direction, makes the plastics combination end portion fractures and form a plastics With reference to fracture, and the carbon fiber combination end is set to be exposed to the plastic sheath, wherein the plastics combination fracture covered carbon fibre A part of the dimension with reference to end；And

(e) a power end sub-set is taken extremely in the plastics combination fracture and the carbon fiber combination end, to have the power supply terminal after pressurization Have one conductive with the terminal of the carbon fiber combination end conductive contact with clamping section of the clamping terminal of the plastics combination fracture and one Section.

2. the method for packing of the heat conduction bar of tool power supply terminal as claimed in claim 1, it is characterised in that the plastics combine disconnected Up to 3 millimeters of the length in portion is split, the length of the power supply terminal is between more than 3 millimeters and less than or equal to 10 millimeters.

3. the method for packing of the heat conduction bar of tool power supply terminal as claimed in claim 1, it is characterised in that the power supply terminal Thickness is at least 0.3 millimeter.

4. the method for packing of the heat conduction bar of tool power supply terminal as claimed in claim 1, it is characterised in that in the step (d), The pulling force for breaking mould is at least 3kg/cm²。

5. the method for packing of the heat conduction bar of tool power supply terminal as claimed in claim 1, it is characterised in that in the step (e), Width after power supply terminal pressurization is less than the width of the plastic sheath.

6. a kind of structure for the heat conduction bar for having power supply terminal, it is characterised in that include：

One carbon fiber wire unit, there is a carbon fiber combination end；

One plastic sheath, is shorter in length than the length and cladding carbon fiber wire unit of the carbon fiber wire unit, and covers the carbon with one The plastics combination fracture of a fiber combination end part；And

One power supply terminal, the plastics combination fracture and the carbon fiber combination end are fixed in, and are combined and broken with the plastics with one Split clamping section of the clamping terminal in portion and one with the terminal conductive segment of the carbon fiber combination end conductive contact.

7. the structure of the heat conduction bar of tool power supply terminal as claimed in claim 6, it is characterised in that the plastics combination fracture Up to 3 millimeters of length, the length of the power supply terminal is between more than 3 millimeters and less than or equal to 10 millimeters.

8. the structure of the heat conduction bar of tool power supply terminal as claimed in claim 6, it is characterised in that the thickness of the power supply terminal At least 0.3 millimeter.

9. the structure of the heat conduction bar of tool power supply terminal as claimed in claim 6, it is characterised in that the width of the power supply terminal Less than the width of the plastic sheath.