JP5686562B2 - Flat heat pipe sealing structure - Google Patents

Description

The present invention relates to a sealing structure of a flat-type heat pipe, especially when combined with the heat radiating member and the flat heat pipe, by sealing edge and the tube of the flat-type heat pipe protrudes, the way of assembling work industry The present invention relates to a sealing structure for a flat heat pipe that can be prevented from becoming.

  A flat heat pipe has characteristics such as high thermal conductivity, light weight, simple structure, many uses, and easy processing. Further, the flat heat pipe can transmit a large amount of heat without consuming electric power.

  Accordingly, flat heat pipes are widely applied in various industries and are used to transfer heat. Further, the flat heat pipe can quickly remove the heat generated from the electronic element, and effectively prevents the occurrence of the heat concentration phenomenon of the electronic element at the present stage.

  The operation principle of the flat heat pipe is to transfer heat by utilizing a phenomenon in which a working fluid injected into a vacuum environment changes phase by absorbing heat. Further, the vaporized working fluid returns to a liquid by being cooled and is circulated and reused. That is, the evaporation part of the flat heat pipe is bonded to the surface of the electronic element, so that a part of the heat generated from the electronic element is absorbed from the evaporation part of the flat heat pipe, thereby releasing heat. .

  A conventional flat heat pipe has a sealed end to which a tubular body is connected, and the sealed end and the tubular body are configured to protrude from a rectangular portion constituting the main body of the flat heat pipe.

  As such a conventional flat heat pipe, for example, as shown in Patent Document 1, a core material is inserted and arranged from the opening end of the copper pipe in a posture along the axial direction, and the core material protrudes from the opening end. In this state, there is a flat heat pipe in which the open end is sealed by crimping, welding, or the like.

JP 2001-208491 A

Current electronic device, to enhance the portability, further lightweight has been required. Therefore, as the apparatus main body is further reduced in size, flat heat pipes used for heat dissipation of electronic elements are also required to be lighter and lighter.

  However, the conventional flat heat pipe has a sealed end and a tube projecting from the rectangular part of the flat heat pipe, so when combining the flat heat pipe and the heat radiating member, it interferes with work or breaks. There is a risk that. Therefore, the conventional flat heat pipe is inconvenient to attach to the heat radiating member, and has a problem that it interferes with the assembly work due to the protruding sealing end and tube.

  The flat heat pipe described in Patent Document 1 also has the same problem as described above, and does not have a configuration for solving this problem.

Therefore, purpose of the present invention, by sealing edge and the tube of the flat-type heat pipe projecting, flat, which can be prevented from impede work combining the heat radiation unit and flat-type heat pipe It is in providing the sealing structure of a heat pipe.

In order to achieve the above object, a flat heat pipe sealing structure according to an aspect of the present invention includes a first side, a second side, a third side, a fourth side, and a notch. The portion where the first side portion and the third side portion intersect has a first intersection portion, and the portion where the first side portion and the fourth side portion intersect is A portion having a second intersecting portion, where the second side portion and the third side portion intersect, has a third intersecting portion, and the second side portion and the fourth side The portion intersecting with the portion has a fourth intersecting portion, and the notch includes the first side portion, the second side portion, the first intersecting portion, the second intersecting portion, and the third intersecting portion. Or provided at the fourth intersection, and inside the main body having a chamber, and one end is sealed and arranged in the notch, and the other end is inserted and connected to the notch. A tube communicating with the chamber; Serial includes a sealing portion of non-sealing portions sealed by the notch, and sealed the one end of the tube body of said first side or said second side of said main body It does not protrude from the end face.
According to another aspect of the present invention, there is provided a flat heat pipe sealing structure in which a notch is provided in a main body of the flat heat pipe, a tube body is inserted into the notch and connected to the main body of the heat pipe. When an unsealed portion is sealed and the tubular body is inserted and connected to the main body, one end of the tubular body does not protrude from the side end face of the main body.

  Also, the flat heat pipe sealing structure according to the present invention is provided with a cutout in the main body of the flat heat pipe, and a tube body is inserted into the cutout portion to connect to the main body of the heat pipe. Is sealed.

According to Futome構forming of the flat heat pipe of the present invention, since the sealing end and the tube does not protrude from the rectangular portion of the flat heat pipe, hinder the work of combining the heat radiation unit and flat-type heat pipe Can be prevented, and the flexibility of assembly of the flat heat pipe can be enhanced.

It is a perspective view which shows the flat type heat pipe by the 1st Embodiment of this invention. It is a perspective view which shows the flat type heat pipe by the modification 1 of 1st Embodiment. It is a perspective view which shows the flat type heat pipe by the modification 2 of 1st Embodiment. It is sectional drawing which shows the flat type heat pipe by 1st Embodiment. It is sectional drawing which shows the flat type heat pipe by the modification 3 of 1st Embodiment. It is a flowchart which shows the manufacturing method of the sealing structure of the flat type heat pipe by the 1st Embodiment of this invention. It is a flowchart which shows the manufacturing method of the sealing structure of the flat type heat pipe by the 2nd Embodiment of this invention.

  DESCRIPTION OF EMBODIMENTS Embodiments showing the objects, features and effects of the present invention will be described in detail with reference to the drawings.

(First embodiment)
Please refer to FIG. As shown in FIGS. 1 to 5, the flat heat pipe 1 according to the first embodiment of the present invention includes a main body 11 and a tube body 12.

  The main body 11 includes a first side portion 111, a second side portion 112, a third side portion 113, a fourth side portion 114, and a notch 115. The first side portion 111 and the second side portion 112 are disposed to face each other. A third side portion 113 and a fourth side portion 114 are provided at both ends of the first side portion 111. At both ends of the second side portion 112, a third side portion 113 and a fourth side portion 114 are provided.

  A portion where the first side portion 111 and the third side portion 113 intersect has a first intersection portion 1111. A portion where the first side portion 111 and the fourth side portion 114 intersect has a second intersecting portion 1112. A portion where the second side portion 112 and the third side portion 113 intersect has a third intersecting portion 1113. A portion where the second side portion 112 and the fourth side portion 114 intersect has a fourth intersecting portion 1114. That is, the first to fourth intersecting portions 1111 to 1114 are disposed at the four corners of the main body 11, respectively.

  The notch 115 is provided at the first side 111, the second side 112, the first intersection 1111, the second intersection 1112, the third intersection 1113, or the fourth intersection 1114. . The inside of the main body 11 has a chamber 13 (see FIG. 4).

  In addition, when providing the notch 115 in the 1st side part 111 or the 2nd side part 112, it is not limited to the position shown in FIG. 1, The arrangement position is changed suitably according to the arrangement position of the tubular body 12. You may do it.

  The notch 115 is formed in a triangle or a rectangle. The notch 115 is rectangular when provided in the first side 111 or the second side 112 (see FIG. 1). Further, when the notch 115 is provided in the first intersecting portion 1111, the second intersecting portion 1112, the third intersecting portion 1113, or the fourth intersecting portion 1114, the notch 115 is rectangular (see Modification 1 shown in FIG. 2) Or it is a triangle (refer the modification 2 shown in FIG. 3).

Incidentally, the notch 11 5 has been described as being formed in a triangular or rectangular, is not limited to these shapes may be configured to other shapes.

  The tube body 12 is disposed in the notch with one end sealed, and the other end is inserted and connected through the notch 115 to communicate with the chamber 13. The tube body 12 is preferably provided so as not to protrude from the end surface of the first side portion 111 or the second side portion 112 in the longitudinal direction of the main body 11.

  The chamber 13 has a flow guiding structure 14 and a working fluid. The diversion structure 14 is a wick structure (see FIG. 4) or a plurality of diversion channel groups (see Modification 3 shown in FIG. 5). The wick structure is a sintered body 141 and a mesh body 142. The guide channel group is configured by a plurality of guide fluids 143 spaced apart from each other, and has at least one channel 144 between the plurality of guide fluids 143.

  Therefore, according to such a configuration, the first side portion 111 and the tube body 12 constituting the sealed end of the flat heat pipe 1 do not protrude from the rectangular portion of the flat heat pipe 1. Therefore, it is possible to prevent the work of combining the flat heat pipe 1 and the heat radiating unit from being obstructed.

  Next, a method for manufacturing a flat heat pipe sealing structure according to the first embodiment of the present invention will be described with reference to FIGS.

  As shown in FIG. 6, the flat heat pipe sealing structure manufacturing method according to the first embodiment of the present invention includes the following steps.

  The operator prepares a flat heat pipe in step S11. In step S11, the flat heat pipe 1 having the flow guide structure 14 therein is prepared.

  Next, an operator provides the notch 115 in the main body 11 of the flat heat pipe 1 by step S12. In step S12, a notch 115 is provided in the main body 11 of the flat heat pipe 1 by a machining method (for example, pressing, wire cutting, milling, etc.).

Thereafter, in step S13, the operator inserts the tube body 12 into an unsealed portion (hereinafter referred to as the notch 115 portion ) by the notch 115 and connects it to the main body 11, and at the same time seals the notch 115 portion as a sealing portion. To do. In this step S <b> 13, the tubular body 12 is inserted through the notch 115 portion, and the tubular body 12 and the main body 11 are connected. In this case, the tubular body 12 is disposed in the notch 115 and is disposed so as not to protrude from the end face of the first side portion 111 or the second side portion 112 in the longitudinal direction of the main body 11.

At the same time, the operator seals the notch 115 portion. Method for sealing a cutout 115 portion is more performed in the high-frequency method.

  Therefore, as described above, according to the flat heat pipe sealing structure and the manufacturing method thereof according to the first embodiment, the sealing end and the tube do not protrude from the rectangular portion of the flat heat pipe. It is possible to prevent the work of combining the mold heat pipe and the heat radiating unit from being obstructed, and to increase the flexibility of assembly of the flat heat pipe.

(Second Embodiment)
Next, a method for manufacturing a flat heat pipe sealing structure according to a second embodiment of the present invention will be described with reference to FIGS. FIG. 7 is a flowchart showing a method of manufacturing a flat heat pipe sealing structure according to the second embodiment of the present invention. As shown in FIG. 7, the method for manufacturing the flat heat pipe sealing structure according to the second embodiment includes the following steps.

  The operator prepares a flat heat pipe in step S21. In step S21, the flat heat pipe 1 having the flow guide structure 14 therein is prepared.

  Next, an operator inserts and connects the tubular body 12 to the unsealed portion of the main body of the flat heat pipe in step S22. In this step 22, the tubular body 12 is inserted and disposed in the unsealed portion of the main body 11 of the flat heat pipe 1, and the tubular body 12 and the flat heat pipe 1 are connected.

Thereafter, in step S23, the operator cuts out the portion of the flat heat pipe 1 through which the tubular body 12 is inserted to form the cutout 115 and simultaneously seals the cutout 115 portion . In this step S23, a portion where the tubular body 12 of the flat heat pipe 1 is inserted and cut is cut out by a machining method (for example, pressing, wire cutting, milling, etc.) to form a notch 115. At the same time, the worker thus sealing the notch 115 portion to the high-frequency method.

  Therefore, according to the sealing structure of the flat heat pipe and the manufacturing method thereof according to the second embodiment, the sealing end and the tube body protrude from the rectangular portion of the flat heat pipe, as in the first embodiment. Therefore, it is possible to prevent the work of combining the flat heat pipe and the heat radiating unit from being obstructed, and the flexibility of assembly of the flat heat pipe can be increased.

  The present invention is not limited to the above-described embodiments and modifications, and various changes and modifications can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 ... Flat type heat pipe 11 ... Main body 111 ... 1st side part 1111 ... 1st crossing part 1112 ... 2nd crossing part 1113 ... 3rd crossing part 1114 ... 4th crossing part 112 ... 2nd side Part 113 ... Third side part 114 ... Fourth side part 115 ... Notch 12 ... Tube 13 ... Chamber 14 ... Conducting structure 141 ... Sintered body 142 ... Mesh body 143 ... Conducting fluid 144 ... Channel

Claims (9)

A portion having a first side, a second side, a third side, a fourth side, and a notch, and a portion where the first side and the third side intersect, A portion having one intersection, and a portion where the first side portion and the fourth side portion intersect each other has a second intersection portion, and the second side portion and the third side portion. The portion where the crossing part has a third crossing part, the part where the second side part and the fourth side part cross each other has a fourth crossing part, and the notch The first side portion, the second side portion, the first intersection portion, the second intersection portion, the third intersection portion, or the fourth intersection portion are provided. A body having;
A tube that is disposed in the notch with one end sealed and the other end is inserted and connected through the notch and communicates with the chamber;
A sealing portion that seals an unsealed portion due to the notch;
Equipped with a,
When the one end of the tubular body is sealed and disposed in the notch, and the other end is inserted and connected to the chamber through the notch, the one end of the tubular body The flat heat pipe sealing structure is characterized in that an end portion does not protrude from an end surface of the first side portion or the second side portion of the main body .   2. The flat heat pipe sealing structure according to claim 1, wherein the chamber has a flow guiding structure and a working fluid, and the flow guiding structure is a wick structure or a plurality of guiding flow path groups. .   3. The flat heat pipe sealing structure according to claim 2, wherein the wick structure includes a sintered body and a mesh body.   The first side portion and the second side portion are disposed to face each other, and the third side portion and the fourth side portion are connected to both ends of the first side portion, and the second side portion is connected to the second side portion. The flat heat pipe sealing structure according to claim 1, wherein the third side portion and the fourth side portion are connected to both ends of the side portion.   3. The flat heat pipe according to claim 2, wherein the guide channel group includes a plurality of guide fluids spaced apart from each other, and has at least one channel between the plurality of guide fluids. Sealing structure. A flat heat pipe body is provided with a notch,
At the same time and inserted the tube into the notches to connect the body of the heat pipe, and sealing the non-sealing portion by the notch, said when connected by inserted the tube body relative to the body A flat heat pipe sealing structure characterized in that one end of the tubular body does not protrude from the side end face of the main body .   The flat heat pipe sealing structure according to claim 6, wherein one end of the tubular body is a sealing end.   The flat heat pipe sealing structure according to claim 6, wherein the notch provided in the main body of the flat heat pipe is formed by a press method.   The unsealed part by the notch of the said main body is sealed by the high frequency method, The sealing structure of the flat type heat pipe of Claim 6 characterized by the above-mentioned.

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