A heat plate, a manufacturing process thereof, a sealing knife and an electronic product

Abstract

The application discloses a vapor chamber and a processing technology, a sealing knife and an electronic product, wherein the vapor chamber comprises a first cover plate, a first cover plate body and a first sealing tail connected to one side of the first cover plate body; a second cover plate, a second cover plate body and a second sealing tail connected to one side of the second cover plate body; the first cover plate body and the second cover plate body are covered, a first sealing convex rib is formed on a first sealing surface of the first sealing tail facing the second sealing tail; and / or a second sealing convex rib is formed on a second sealing surface of the second sealing tail facing the first sealing tail; the first sealing convex rib is sealed and abuts against the second sealing surface of the second sealing tail, and / or the second sealing convex rib is sealed and abuts against the first sealing surface of the first sealing tail. The technical scheme of the application is beneficial to improving the sealing reliability of the vapor chamber.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heat plate, in particular to a heat plate, a manufacturing process thereof, a sealing knife and an electronic product. BACKGROUND

[0002] The heat plate is a two-phase flow heat transfer element, which is generally used in products with high power. The structure of the heat plate generally includes an upper cover plate and a lower cover plate. In order to avoid leakage of the working medium in the heat plate, the upper cover plate and the lower cover plate are required to be sealingly connected. The existing sealing mode of the upper cover plate and the lower cover plate is unreasonable, resulting in low sealing tail yield of the heat plate. SUMMARY

[0003] The main purpose of the present application is to provide a heat plate, which aims to provide sealing reliability of the heat plate.

[0004] To achieve the above purpose, the heat plate provided by the present application comprises:

[0005] A first cover plate, the first cover plate comprising a first plate body and a first sealing tail connected to one side of the first plate body;

[0006] A second cover plate, the second cover plate comprising a second plate body and a second sealing tail connected to one side of the second plate body;

[0007] The first plate body and the second plate body are covered, and a first sealing rib is formed on a first sealing surface of the first sealing tail facing the second sealing tail; and / or, a second sealing rib is formed on a second sealing surface of the second sealing tail facing the first sealing tail;

[0008] The first sealing rib sealingly abuts against the second sealing surface of the second sealing tail, and / or the second sealing rib sealingly abuts against the first sealing surface of the first sealing tail.

[0009] Optionally, the first sealing rib and the second sealing rib are arranged in parallel and are arranged at intervals along the length direction of the first sealing tail.

[0010] Optionally, the first sealing rib has a first abutting surface on the side facing the second sealing surface, and the first abutting surface abuts against the second sealing surface; and / or,

[0011] The second sealing rib has a second abutting surface on the side facing the first sealing surface, and the second abutting surface abuts against the first sealing surface.

[0012] Optionally, the width of the first sealing rib is 0.2mm-0.3mm; and / or,

[0013] The width of the second sealing rib is 0.2mm-0.3mm.

[0014] Optionally, a first sealing groove is formed on the first sealing surface near the first sealing convex rib; and / or,

[0015] A second sealing groove is formed on the second sealing surface near the second sealing convex rib.

[0016] Optionally, the first sealing groove is located on both sides of the area of the first sealing surface where the first sealing convex rib is formed; and / or,

[0017] The second sealing groove is located on both sides of the area of the second sealing surface where the second sealing convex rib is formed; and / or,

[0018] The groove depth of the first sealing groove is 0.05-0.07mm; and / or,

[0019] The groove depth of the second sealing groove is 0.05-0.07mm.

[0020] The application further provides a sealing cutter for manufacturing a uniform heating plate.

[0021] The sealing cutter comprises a first cutter body and a second cutter body.

[0022] The first cutter body has a first sealing body, and the side of the first sealing body facing the second cutter body has a first sealing convex rib; and / or,

[0023] The second cutter body has a second sealing body, and the side of the second sealing body facing the first cutter body has a second sealing convex rib.

[0024] The uniform heating plate comprises:

[0025] A first cover plate comprises a first plate body and a first sealing tail connected to one side of the first plate body.

[0026] A second cover plate comprises a second plate body and a second sealing tail connected to one side of the second plate body.

[0027] The first plate body and the second plate body are covered, the first sealing surface of the first sealing tail facing the second sealing tail is provided with a first sealing convex rib; and / or, the second sealing surface of the second sealing tail facing the first sealing tail is provided with a second sealing convex rib.

[0028] The first sealing convex rib sealingly abuts against the second sealing surface of the second sealing tail, and / or the second sealing convex rib sealingly abuts against the first sealing surface of the first sealing tail.

[0029] The application further provides a manufacturing process of a uniform heating plate, which comprises the following steps:

[0030] Obtain a first cover plate and a second cover plate, and close the first cover plate and the second cover plate; wherein, the first cover plate includes a first plate body and a first sealing end connected to one side of the first plate body; the second cover plate includes a second plate body and a second sealing end connected to one side of the second plate body;

[0031] Obtain a sealing and sealing knife; wherein the sealing and sealing knife includes a first knife body and a second knife body; the first knife body has a first sealing body, and the side of the first sealing part facing the second knife body has a first sealing boss; the second knife body has a second sealing body, and the side of the second sealing part facing the first knife body has a second sealing boss;

[0032] The first blade of the sealing knife presses the preset position of the first sealing end, and the second blade presses the preset position of the second sealing end, so as to form a first sealing rib on the first sealing surface of the first sealing end and make the first sealing rib seal connection with the second sealing end; and form a second sealing rib on the second sealing surface of the second sealing end and make the second sealing rib seal connection with the first sealing end.

[0033] The heat spreader includes:

[0034] The first cover plate includes a first plate body and a first sealing end connected to one side of the first plate body;

[0035] The second cover plate includes a second plate body and a second sealing end connected to one side of the second plate body;

[0036] The first plate body and the second plate body are covered together, and a first sealing rib is formed on the first sealing surface of the first sealing end facing the second sealing end; and / or, a second sealing rib is formed on the second sealing surface of the second sealing end facing the first sealing end.

[0037] The first sealing rib abuts against the second sealing surface of the second sealing end, and / or the second sealing rib abuts against the first sealing surface of the first sealing end.

[0038] Optionally, the step of obtaining the first cover plate and the second cover plate includes:

[0039] A first cover plate is manufactured, and a preset position of the first sealing surface at the first sealing end is etched to form a first sealing groove, so that the area of ​​the first sealing surface forming the first sealing rib protrudes.

[0040] A second cover plate is manufactured, and a preset position of the second sealing surface at the second sealing end is etched to form a second sealing groove, so that the area of ​​the second sealing surface forming the second sealing rib protrudes.

[0041] This application further proposes an electronic product, including a heat-generating electronic component and a heat spreader, wherein the heat spreader abuts against the heat-generating electronic component;

[0042] The heat spreader includes:

[0043] The first cover plate includes a first plate body and a first sealing end connected to one side of the first plate body;

[0044] The second cover plate includes a second plate body and a second sealing end connected to one side of the second plate body;

[0045] The first plate body and the second plate body are covered together, and a first sealing rib is formed on the first sealing surface of the first sealing end facing the second sealing end; and / or, a second sealing rib is formed on the second sealing surface of the second sealing end facing the first sealing end.

[0046] The first sealing rib abuts against the second sealing surface of the second sealing end, and / or the second sealing rib abuts against the first sealing surface of the first sealing end.

[0047] In the technical solution of this invention, by setting the first sealing rib or the second sealing rib, the sealing area required for the first sealing part and the second sealing part is significantly reduced. That is, during the sealing process, it is no longer necessary to squeeze and seal the entire sealing part, but only to seal the positions corresponding to the first sealing rib and the second sealing rib. Thus, when the pressure applied by the sealing tool to the first sealing part or the second sealing part is equal, the pressure on the first sealing rib and the second sealing rib increases due to the significant reduction in the force-bearing area. This is beneficial to improving the sealing effect between the first sealing rib and the second sealing surface, and improving the sealing effect between the second sealing rib and the first sealing surface. At the same time, by accurately sealing the position to the first sealing rib and the second sealing rib, the reliability of the seal is improved, and the flow channels for air or liquid to pass through between the first sealing surface and the second sealing surface are avoided. It is worth noting that the first and second sealing ends in this embodiment are very thin and cannot withstand excessive impact force (when the sealing end bears a large impact force over a large area, it is easy to cause the sealing end to break). Under the condition that the impact force remains unchanged, the compressive force of the first and second sealing ribs can be greatly increased, ensuring that the first and second sealing ends will not be damaged by impact, and ensuring the sealing connection between the first sealing rib and the second sealing surface, as well as the second sealing rib and the first sealing surface. Attached Figure Description

[0048] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0049] Figure 1 This is a schematic diagram of the structure of an embodiment of the first cover plate of the heat spreader of the present invention;

[0050] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0051] Figure 3 This is a schematic diagram of the structure of an embodiment of the second cover plate of the heat spreader of the present invention;

[0052] Figure 4 for Figure 3 A magnified view of a section at point B in the middle;

[0053] Figure 5 A partial structural schematic diagram of the sealing end of the heat spreader plate;

[0054] Figure 6 This is a schematic diagram of the structure of an embodiment of the first blade of the sealing knife of the present invention;

[0055] Figure 7 This is a schematic diagram of the structure of an embodiment of the second blade of the sealing knife of the present invention;

[0056] Figure 8 This is a schematic diagram of the structure of an embodiment of the sealing knife of the present invention;

[0057] Figure 9 for Figure 8 A magnified view of a section at point C.

[0058] Explanation of icon numbers:

[0059] Reference Name Reference Name 100 First cover plate 110 First sealing portion 111 First sealing surface 112 First sealing rib 200 Second cover plate 210 Second sealing portion 211 Second sealing surface 212 Second sealing rib 130 First non-sealing area 131 First sealing groove 150 First sealing area 230 Second non-sealing area 231 Second sealing groove 250 Second sealing area 300 First blade body 310 First sealing body 311 First sealing boss 500 Second blade body 510 Second sealing body 511 Second sealing boss

[0060] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0061] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0062] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0063] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the term "and / or" throughout the text includes three solutions; taking A and / or B as an example, it includes technical solution A, technical solution B, and a technical solution that simultaneously satisfies A and B. Furthermore, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0064] This invention primarily proposes a vapor chamber, mainly used in electronic products to enhance their heat dissipation. These electronic products refer to devices such as mobile phones and tablets that require heat dissipation during operation. Taking a vapor chamber comprising a first cover plate 100 and a second cover plate 200 as an example, during operation, when the second cover plate 200 comes into contact with a heat source, such as a heat-generating electronic component, the working medium acting within the sealed cavity (the vapor channel or heat-conducting space enclosed by the first cover plate 100 and the second cover plate 200) changes from liquid to gas and is transferred towards the first cover plate 100. Finally, it is transferred out through heat dissipation components on the outside of the first cover plate 100. At this point, the working medium changes from gaseous to liquid and flows back to the lower plate, restarting the next cycle.

[0065] The following section will mainly describe the specific structure of the heat spreader.

[0066] Reference Figures 1 to 9 In this embodiment of the invention, the heat spreader includes:

[0067] The first cover plate 100 includes a first plate body and a first sealing end connected to one side of the first plate body;

[0068] The second cover plate 200 includes a second plate body and a second sealing end connected to one side of the second plate body;

[0069] The first plate body and the second plate body are covered together, and a first sealing rib 112 is formed on the first sealing surface 111 facing the second sealing surface; and / or, a second sealing rib 212 is formed on the second sealing surface 211 facing the first sealing surface.

[0070] The first sealing rib 112 is in sealing contact with the second sealing surface 211 of the second sealing end, and / or the second sealing rib 212 is in sealing contact with the first sealing surface 111 of the first sealing end.

[0071] Specifically, in this embodiment, the first cover plate 100 and the second cover plate 200 enclose a sealed heat-conducting space, providing a path for the movement of the medium and the transfer of heat. The first cover plate 100 and the second cover plate 200 can have various forms, as long as they can facilitate the transfer of heat energy between the gas and liquid phases. For example, the first cover plate 100 may have a flange on the side facing the second cover plate 200, and the second cover plate 200 may be a flat plate; or, the second cover plate 200 may have a flange on the side facing the first cover plate 100, and the first cover plate 100 may be a flat plate, etc.

[0072] In this application, the first cover plate 100 includes a first plate body and a first sealing tail portion located on one side of the first plate body, the first plate body and the first sealing tail portion being integrally formed. The thickness of the first cover plate 100 is 0.13 to 0.16 mm, taking 0.15 mm as an example. The width D of the first sealing tail portion is 6.8 to 7.2 mm, taking 7 mm as an example. The width d of the preset area used to form the first sealing rib 112 is 1.8 to 2.2 mm, taking 2 mm as an example. Similarly, the second cover plate 200 includes a second plate body and a second sealing tail portion located on one side of the second plate body, the second plate body and the second sealing tail portion being integrally formed. The thickness of the second cover plate 200 is 0.13 to 0.16 mm, taking 0.15 mm as an example. The width E of the second sealing tail portion is 6.8 to 7.2 mm, taking 7 mm as an example. The width e of the preset area used to form the second sealing rib 212 is 1.8 to 2.2 mm, taking 2 mm as an example.

[0073] The first sealing portion includes a first sealing area and a first non-sealing area. The first non-sealing area comprises two parts, located on either side of the first sealing area. In the actual sealing process, only the first sealing area needs to be sealed; the first non-sealing area increases the strength and sealing performance of the first sealing portion. A first sealing rib 112 is disposed in the first sealing area and extends along the width direction of the first sealing area. The first sealing rib 112 can take many forms; in this embodiment, the first sealing rib 112 is shaped like a boss. There can be multiple first sealing ribs 112, which are arranged in parallel and along the length direction of the first sealing area.

[0074] Similarly, the second sealing portion includes a second sealing area and a second non-sealing area. The second non-sealing area comprises two parts, located on either side of the second sealing area. In the actual sealing process, only the second sealing area needs to be sealed; the second non-sealing area can increase the strength and sealing performance of the second sealing portion. A second sealing rib 212 is disposed in the second sealing area and extends along the width direction of the second sealing area. The second sealing rib 212 can take many forms; in this embodiment, it is exemplified as a boss-shaped rib. There can be multiple second sealing ribs 212, arranged in parallel along the length direction of the second sealing area.

[0075] When the first sealing rib 112 and the second sealing rib 212 are present simultaneously, they are arranged in parallel and spaced apart along the length of the first sealing tail. This means the contact position between the first sealing rib 112 and the second sealing surface 211 is staggered from the contact position between the second sealing rib 212 and the first sealing surface 111, increasing the complexity of the path and preventing water, gas, or other external contaminants from entering the heat spreader, as well as preventing the medium inside the heat spreader from flowing out.

[0076] In this embodiment, by setting the first sealing rib 112 or the second sealing rib 212, the sealing area required for the first sealing part 110 and the second sealing part 210 is greatly reduced. That is, during the sealing process, it is no longer necessary to squeeze and seal the entire sealing part, but only to seal the positions corresponding to the first sealing rib 112 and the second sealing rib 212. Thus, when the pressure applied by the sealing tool to the first sealing part 110 or the second sealing part 210 is equal, the pressure on the first sealing rib 112 and the second sealing rib 212 increases due to the significant reduction in the force-bearing area. This is beneficial to improving the sealing effect between the first sealing rib 112 and the second sealing surface 211, and also improving the sealing effect between the second sealing rib 212 and the first sealing surface 111. At the same time, by precisely sealing the position to the first sealing rib 112 and the second sealing rib 212, the reliability of the seal is improved, and the flow channels for air or liquid between the first sealing surface 111 and the second sealing surface 211 are avoided.

[0077] It is worth noting that the first and second sealing ends in this embodiment are very thin and cannot withstand excessive impact force (when the sealing end bears a large impact force over a large area, it is easy to cause the sealing end to break). Under the condition that the impact force remains unchanged, the compressive force of the first sealing rib 112 and the second sealing rib 212 can be greatly increased. This ensures that the first and second sealing ends will not be damaged by impact, and guarantees the sealing connection between the first sealing rib 112 and the second sealing surface 211, as well as between the second sealing rib 212 and the first sealing surface 111.

[0078] In some embodiments, to improve the sealing performance between the first sealing rib 112 and the second sealing surface 211, and to improve the sealing performance between the second sealing rib 212 and the first sealing surface 111, the first sealing rib 112 has a first contact surface on the side facing the second sealing surface 211, and the first contact surface is in contact with the second sealing surface 211; and / or, the second sealing rib 212 has a second contact surface on the side facing the first sealing surface 111, and the second contact surface is in contact with the first sealing surface 111. In this embodiment, the first sealing rib 112 is provided as a trapezoidal boss, and its top first contact surface is a plane, so that the cooperation between the first sealing rib 112 and the second sealing surface 211 is a surface-to-surface contact, which is beneficial to improving the sealing reliability between the first sealing rib 112 and the second sealing surface 211. The second sealing rib 212 is a trapezoidal boss, and its top second contact surface is a plane, ensuring that the second sealing rib 212 and the first sealing surface 111 make surface-to-surface contact, which improves the sealing reliability between the second sealing rib 212 and the first sealing surface 111. The width of the first sealing rib 112 is 0.2mm to 0.3mm; and / or, the width of the second sealing rib 212 is 0.2mm to 0.3mm. In this embodiment, by setting the width of the first sealing rib 112 to 0.2mm to 0.3mm, sufficient contact area for sealing is ensured, while avoiding insufficient sealing impact force due to excessive area. Similarly, by setting the width of the second sealing rib 212 to 0.2mm to 0.3mm, sufficient contact area for sealing is ensured, while avoiding insufficient sealing impact force due to excessive area. It is worth noting that, compared with the existing stamping method, the width of the stamping seal has been changed from 7mm to less than 0.6mm, which significantly reduces the area of ​​the extrusion seal, which is conducive to improving the yield of the extrusion seal and improving the sealing performance of the heat spreader.

[0079] In some implementations, in order to further improve the sealing performance of the first sealing rib 112 and the second sealing rib 212, a first sealing groove 131 is formed on the first sealing surface 111 near the first sealing rib 112; and / or, a second sealing groove 231 is formed on the second sealing surface 211 near the second sealing rib 212.

[0080] In this embodiment, the first sealing groove 131 is located within the first non-sealing area 130, and the first sealing groove 131 is located on both sides of the first sealing area 150, causing the first sealing area 150 to protrude from the first non-sealing area 130. Similarly, the second sealing groove 231 is located within the second non-sealing area 230, and the second sealing groove 231 is located on both sides of the first sealing area 150, causing the second sealing area 250 to protrude from the second non-sealing area 230. Thus, during the compression sealing process, only the sealing areas are in surface contact. During the sealing process of the sealing blade, a first sealing rib 112 is formed in the first sealing area 150, and a second sealing rib 212 is formed in the second sealing area 250. Furthermore, the first sealing rib 112 is in contact with and sealed against the second sealing surface 211, and the second sealing rib 212 is in contact with and sealed against the first sealing surface 111. Specifically, the first sealing groove 131 is located on both sides of the area on the first sealing surface 111 where the first sealing rib 112 is formed. The second sealing groove 231 is located on both sides of the second sealing surface 211 where the second sealing rib 212 is formed. The groove depth of the first sealing groove 131 is 0.05-0.07 mm; and / or, the groove depth of the second sealing groove 231 is 0.05-0.07 mm.

[0081] The depth of the first sealing groove 131 should not be too deep, as this will affect the strength of the first sealing end; nor should it be too shallow, as this will cause the first non-sealing area 130 and the second non-sealing area 230 to prematurely contact each other during the sealing process, resulting in insufficient pressure and poor sealing performance. Similarly, the depth of the second sealing groove 231 should not be too deep, as this will affect the strength of the second sealing end; nor should it be too shallow, as this will also cause the first non-sealing area 130 and the second non-sealing area 230 to prematurely contact each other during the sealing process, resulting in insufficient pressure and poor sealing performance. The first sealing groove 131 and the second sealing groove 231 can be formed in various ways, including machining, corrosion by chemical substances, or etching.

[0082] This application further proposes a sealing knife for sealing a heat spreader. The sealing knife includes a first knife body 300 and a second knife body 500; the first knife body 300 has a first sealing body 310, and the side of the first sealing body 310 facing the second knife body 500 has a first sealing boss 311; and / or, the second knife body 500 has a second sealing body 510, and the side of the second sealing body 510 facing the first knife body 300 has a second sealing boss 511. In this embodiment, the first sealing boss 311 is provided on the first sealing body 310, and the second sealing boss 511 is provided on the second sealing body 510. During the sealing process, the first sealing boss 311 presses against the side of the first sealing tail portion facing away from the first sealing surface 111, and the second sealing boss 511 presses against the side of the second sealing tail portion facing away from the second sealing surface 211. This results in a first sealing rib being formed on the first sealing surface 111, and a second sealing rib being formed on the second sealing surface 211, with the first sealing rib and the second sealing rib being fitted and sealed together.

[0083] This invention also proposes a manufacturing process for a heat spreader, comprising the following steps:

[0084] Obtain a first cover plate 100 and a second cover plate 200, and close the first cover plate 100 and the second cover plate 200; wherein, the first cover plate 100 includes a first plate body and a first sealing end connected to one side of the first plate body; the second cover plate 200 includes a second plate body and a second sealing end connected to one side of the second plate body.

[0085] A sealing knife is obtained; wherein the sealing knife includes a first knife body 300 and a second knife body 500; the first knife body 300 has a first sealing body 310, and the first sealing part 310110 has a first sealing boss 311 on the side facing the second knife body 500; the second knife body 500 has a second sealing body 510, and the second sealing part 510210 has a second sealing boss 511 on the side facing the first knife body 300;

[0086] The first blade 300 of the sealing knife presses the preset position of the first sealing tail, and the second blade 500 presses the preset position of the second sealing tail, so as to form a first sealing rib 112 on the first sealing surface 111 of the first sealing tail and make the first sealing rib 112 sealably connected with the second sealing tail; and form a second sealing rib 212 on the second sealing surface 211 of the second sealing tail and make the second sealing rib 212 sealably connected with the first sealing tail.

[0087] In this embodiment, the sealing blade is configured to include a first blade body 300 and a second blade body 500. The first blade body 300 has a first sealing body 310, and the side of the first sealing portion 310110 facing the second blade body 500 has a first sealing boss 311. The second blade body 500 has a second sealing body 510, and the side of the second sealing portion 510210 facing the first blade body 300 has a second sealing boss 511. During the sealing process, it is not necessary to seal the entire first and second sealing portions; only the first sealing rib 112 and the second sealing rib 212 need to be sealed in the sealing area. Thus, under the same extrusion pressure, the sealing blade and sealing method in this application can significantly improve the reliability and yield of the sealing, thereby improving the production efficiency of the heat spreader.

[0088] In some embodiments, to improve the sealing effect, the step of obtaining the first cover plate 100 and the second cover plate 200 includes: manufacturing the first cover plate 100 and etching a predetermined position of the first sealing surface 111 at the first sealing end to form a first sealing groove 131, such that the area of ​​the first sealing surface 111 forming the first sealing rib 112 protrudes; manufacturing the second cover plate 200 and etching a predetermined position of the second sealing surface 211 at the second sealing end to form a second sealing groove 231, such that the area of ​​the second sealing surface 211 forming the second sealing rib 212 protrudes. That is, by etching, the first sealing groove 131 and the second sealing groove 231 are formed in the non-sealing area, thereby significantly improving the sealing effect of the first sealing rib 112 and the second sealing rib 212 during sealing.

[0089] This invention also proposes an electronic product comprising a heat-generating electronic component and a heat spreader. The specific structure of the heat spreader is as described in the above embodiments. Since the electronic product adopts all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated upon here. The heat spreader abuts against the heat-generating electronic component.

[0090] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A vapor chamber, characterized by, The utility model relates to a sealing structure of a first cover plate and a second cover plate, comprising: a first cover plate comprising a first plate body and a first tail connected to one side of the first plate body; a second cover plate comprising a second plate body and a second tail connected to one side of the second plate body; the first plate body and the second plate body are overlapped, and a first sealing rib is formed on a first sealing surface of the first tail facing the second tail; a second sealing rib is formed on a second sealing surface of the second tail facing the first tail; the first sealing rib is in sealing abutment with the second sealing surface of the second tail, and the second sealing rib is in sealing abutment with the first sealing surface of the first tail; the first sealing rib and the second sealing rib are arranged in parallel and are spaced apart along the length direction of the first tail; one side of the first sealing rib facing the second sealing surface has a first abutting surface which is in abutment with the second sealing surface; one side of the second sealing rib facing the first sealing surface has a second abutting surface which is in abutment with the first sealing surface; a first sealing groove is formed on the first sealing surface near the first sealing rib; a second sealing groove is formed on the second sealing surface near the second sealing rib; the first sealing groove is located on both sides of the area of the first sealing surface where the first sealing rib is formed; the second sealing groove is located on both sides of the area of the second sealing surface where the second sealing rib is formed; the depth of the first sealing groove is 0.05-0.07 mm; the depth of the second sealing groove is 0.05-0.07 mm.

2. The vapor chamber of claim 1, wherein the width of the first sealing rib is 0.2-0.3 mm; the width of the second sealing rib is 0.2-0.3 mm.

3. A manufacturing process of the vapor chamber as claimed in claim 1 or 2, characterized by, The utility model relates to a sealing structure of a first cover plate and a second cover plate, comprising: obtaining a first cover plate and a second cover plate and overlapping the first cover plate and the second cover plate; the first cover plate comprises a first plate body and a first tail connected to one side of the first plate body; the second cover plate comprises a second plate body and a second tail connected to one side of the second plate body; obtaining a sealing and sealing cutter; the sealing and sealing cutter comprises a first cutter body and a second cutter body; the first cutter body has a first sealing body, one side of the first sealing body facing the second cutter body has a first sealing boss; the second cutter body has a second sealing body, one side of the second sealing body facing the first cutter body has a second sealing boss; the first cutter body of the sealing and sealing cutter stamps a preset position of the first tail, the second cutter body stamps a preset position of the second tail, so as to form a first sealing rib on a first sealing surface of the first tail and make the first sealing rib sealingly connected with the second tail; form a second sealing rib on a second sealing surface of the second tail and make the second sealing rib sealingly connected with the first tail.

4. The manufacturing process of the vapor chamber of claim 3, wherein the step of obtaining the first cover plate and the second cover plate comprises: manufacturing the first cover plate and etching a preset position of the first sealing surface of the first tail, so as to form a first sealing groove and make the area of the first sealing surface where the first sealing rib is formed protrude; The second cover plate is manufactured, and a preset position of a second sealing surface of the second sealing tail is etched to form a second sealing groove, so that the area of the second sealing surface forming a second sealing convex rib is protruded.

5. An electronic product, characterized by comprising: The heat-generating electronic component and the vapor chamber according to claim 1 or 2 are in abutment.

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