Abstract:
A heat plate fixing structure is provided, suitable for being used in the heatsink structure of the heating element for an electronic device, which is provided with a support part and a fixing piece, wherein the fixing piece is fixed onto the internal side of the top plate of the support part, pressing against the heat plate, such that the heat plate and the heating element are tightly attached to each other, thereby achieving good heat conductive integration.

Description:
BACKGROUND OF THE INVENTION 
   1. Field of Invention 
   The present invention relates to a heat plate fixing structure, and more particularly to a heat plate fixing structure used in the heatsink structure of the heating element for an electronic device. 
   2. Related Art 
   With the progress of information technology, the computer has become widely used. Along with the ever-enhancing operating functionality and speed of electronic elements, such as the central processing unit (CPU) or display chip of a computer, the problem of high temperature occurs due to the high-speed or mass operations of the electronic elements. As the working temperature of each electronic element is limited to some extent, a high temperature may not only affect the work efficiency of electronic elements, but also cause problems, such as damage to or even burning of the electronic elements. Therefore, the problem of heat dissipation has become an indispensable part of that which is to be solved during the product design. To make a computer work normally under a normal temperature, a heatsink has become a necessary means for the computer. 
   An ordinary circuit structure of a computer takes a CPU and a display chip as the main operation units. The high temperature resulted from the high-speed or mass operations of CPU or display chip is indeed an important subject to be overcome as for a notebook computer. However, as the notebook computer is limited to be light in weight, compact in size, and limited in the internal space, how to effectively utilize the space becomes extremely important in the circuit design and the layout arrangement of the internal mechanism. 
   As shown in  FIG. 1 , it is a conventional heat plate fixing device  70 , wherein each of the fixing plates  71  is supported by a foot rest  72 , and then installed by pressing against the middle of the heat plate via a single point; therefore, the force is non-uniformly applied to the heat plate due to the over-concentration of the force-applying point. The structural design of the fixing plate  71  pressing against the middle of the heat plate via a single point also results in the situation that the heat plate cannot be steadily integrated with and tightly attached to the heating element, thereby causing problems, such as unsteady structure and poor heat conduction, etc. 
   SUMMARY OF THE INVENTION 
   The present invention provides a heat plate fixing structure with a support part and a fixing piece, applied to the heatsink structure of the heating element for an electronic device, wherein the fixing piece is fixed onto the internal side of the top plate of the support part, further pressing against the heat plate, such that the heat plate and the heating element are attached to each other tightly, thereby achieving good heat conductive integration. 
   To fulfill the above object, the present invention provides a heat plate fixing structure, applied to the heatsink structure of the heating element for an electronic device, wherein the heatsink structure at least includes a heat plate and at least one heat pipe. The heat plate fixing structure includes a support part and at least one fixing piece. 
   The support part is of an inverted U-shaped structure, provided with a top plate and a side plate respectively formed at both sides of the top plate. The support part is disposed across both sides of the support part and is fixed onto the circuit board or the body of the electronic device. The fixing piece is an elastic sheet with the top end fixed onto the internal side of the top plate, and the fixing piece is pressed against the four sides of the upper surface of the heat plate, such that the heat plate and the heating element are attached to each other tightly. 
   The present invention further provides a heat plate fixing structure, applied to the heatsink structure of the heating element for an electronic device, wherein the heatsink structure at least includes a heat plate and at least one heat pipe. The heat plate fixing structure includes a support part with a bracket, and at least one fixing piece. 
   The support part with a bracket is provided with a top plate, side plates respectively formed at both sides of the top plate, and a bracket formed at one side of the side plates. The support part is disposed across the external side of the heat plate and is fixed onto the circuit board or the body of the electronic device. The at least one fixing piece is an elastic sheet with the top end fixed onto the internal side of the top plate, and the fixing piece presses against the upper surface of the heat plate, such that the heat plate and the heating element are attached to each other tightly. 
   Through implementing the present invention, at least the following functions can be achieved: 
   First, the forces are uniformly applied to the heat plate, such that it can be integrated with the heating element with more steady heat conductivity. 
   Second, the stability of the structure can be improved through the structural operation with multiple force-applying points. 
   To further understand the objects, structural features, and functions of the present invention, it will be illustrated in detail below with reference to the embodiments and accompanying drawings. 
   Further scope of applicability of the present invention will become apparent from the detailed description given hereinafter. However, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description. 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
     The present invention will become more fully understood from the detailed description given herein below for illustration only, and which thus is not limitative of the present invention, and wherein: 
       FIG. 1  is a conventional heat plate fixing device; 
       FIG. 2  is an exploded stereogram of a heat plate fixing structure according to a first embodiment of the present invention; 
       FIG. 3  is an exploded stereogram of an embodiment of the heat plate fixing structure of  FIG. 2  further provided with a reinforcing plate; 
       FIG. 4  is an integrated stereogram of a heat plate fixing structure according to an embodiment of the present invention; 
       FIG. 5  is a cross-sectional view of the heat plate fixing structure of  FIG. 4 ; and 
       FIG. 6  is an exploded stereogram of a heat plate fixing structure according to a second embodiment of the present invention. 
   

   DETAILED DESCRIPTION OF THE INVENTION 
   The First Embodiment 
   As shown in  FIG. 2 , it is an exploded stereogram of a heat plate fixing structure  10  according to a first embodiment of the present invention. As shown in  FIG. 3 , it is an exploded stereogram of an embodiment of the heat plate fixing structure  10  of  FIG. 2  further provided with a combining plate  421  and a reinforcing plate  422 . As shown in  FIG. 4 , it is an integrated stereogram of a heat plate fixing structure  10  according to an embodiment of the present invention. As shown in  FIG. 5 , it is a cross-sectional view of the heat plate fixing structure  10  of  FIG. 4 . 
   Referring to  FIGS. 2 ,  3 ,  4 , and  5 , the present embodiment is a heat plate fixing structure  10 , applied to the heatsink structure  30  of the heating element  20  for an electronic device. The heatsink structure  30  at least includes a heat plate  31  and at least one heat pipe  32 . The heat plate fixing structure  10  includes a support part  40  and at least one fixing piece  50 . 
   The support part  40  is of an inverted U-shaped structure, provided with a top plate  41  and a side plate  42  respectively formed at both sides of the top plate  41 . Generally, the support part  40  can be made of a plastic material with excellent heat durability, or other metallic materials. The support part  40  is disposed across both sides of the heat plate  31 , for providing support when the fixing piece  50  exerts pressure onto the heat plate  31 . Besides, the support part  40  can be fixed onto the circuit board or the body  60  of the electronic device via a gel. Alternatively, when the junction parts between the support part  40  and the circuit board or the body  60  are of materials that can be welded, the support part  40  also can be fixed onto the circuit board or the body  60  of the electronic device by way of welding. 
   Referring to  FIG. 3 , the top plate  41  of the support part  40  is further provided with a groove  411  for enhancing the structural strength of the support part  40 . Besides, a combining plate  421  can be further disposed at the external side of each side plate  42 . A hole is disposed in each of the combining plates  421 , such that the support part  40  can be fixed onto the circuit board or the body  60  of the electronic device via a screw  423 . To achieve a higher structural strength, at least one reinforcing plate  422  can be further disposed between the combining plate  421  and the side plate  42 . 
   The fixing piece  50  is an elastic sheet, for example, an elastic steel sheet. The top central part of the fixing piece  50  is of a flat shape, so it can be attached to the internal side of the top plate  41  of the support part  40 . Besides, the fixing piece  50  can be integrated with the top plate  41  via a rivet  412  or by way of welding. Alternatively, if the support part  40  is a plastic piece, the plastic piece can go through the opening part of the fixing piece  50 , and then it is melted, such that the fixing piece  50  is fixed onto the support part  40 . The fixing piece  50  has a first bent part  51 , for providing the fixing piece  50  with a downward bent structure, thereby enabling the fixing piece  50  to exert pressures onto the heat plate  31 . Besides, a second bent part  52  is formed at the position where the fixing piece  50  contacts the heat plate  31 . When the second bent part  52  contacts the heat plate  31 , the contact between the fixing piece  50  and the heat plate  31  can be made much smoother and easier. The fixing piece  50  can be steadily pressed against the four sides of the upper surface of the heat plate  31  via the first bent part  51  and the second bent part  52 , such that the heat plate  31  and the heating element  20  are attached to each other tightly. 
   The Second Embodiment 
   As shown in  FIG. 6 , it is an exploded stereogram of a heat plate fixing structure  10 ′ according to a second embodiment of the present invention. The present embodiment is a heat plate fixing structure  10 ′, applied to the heatsink structure  30  of the heating element  20  for an electronic device. The heatsink structure  30  at least includes a heat plate  31  and at least one heat pipe  32 . The heat plate fixing structure  10 ′ includes a support part  40 ′ with a bracket and at least one fixing piece  50 . 
   The support part  40 ′ with a bracket is also of an inverted U-shaped structure, provided with a top plate  41 , side plates  42  respectively formed at both sides of the top plate  41 , and a bracket  43  further formed at one side of the side plates  42 . The support part  40 ′ with a bracket is disposed across the external side of the heat plate  31  and fixed onto the circuit board or the body  60  of the electronic device. 
   The support part  40 ′ with a bracket is generally made of plastic materials with the excellent heat durability, or other metallic materials. The support part  40 ′ is disposed across the external side of the heat plate  31 , for providing support when the fixing piece  50  exerts pressures onto the heat plate  31 . Besides, the support part  40 ′ with a bracket can be fixed onto the circuit board or the body  60  of the electronic device via a gel. Alternatively, when the junction parts between the support part  40 ′ with a bracket and the circuit board or the body  60  are of materials that can be welded, the support part  40 ′ with a bracket also can be fixed onto the circuit board or the body  60  of the electronic device by way of welding. As the bracket  43  can be attached to the circuit board or the body  60  of the electronic device, the fixing area for the support part  40 ′ with a bracket can be significantly enlarged, such that the structure of the support part  40 ′ with a bracket is much steadier. 
   Similarly, as shown in  FIG. 3 , a groove  411  can be further disposed in the top plate  41  of the support part  40 ′ with a bracket for enhancing the structural strength. Besides, a combining plate  421  can be further disposed at the external side of each side plate  42 . A hole is disposed in each combining plate  421 , such that the support part  40 ′ with a bracket can be fixed onto the circuit board or the body  60  of the electronic device via a screw  423 . Furthermore, to achieve a higher structural strength, at least one reinforcing plate  422  can be further disposed between the combining plate  421  and the side plate  42 . 
   The fixing piece  50  is an elastic sheet, for example, an elastic steel sheet. The top central part of the fixing piece  50  is of a flat shape, so it can be attached to the internal side of the top plate  41  of the support part  40 ′ with a bracket. Besides, the fixing piece  50  can be integrated with the top plate  41  via a rivet  412  or by way of welding. Alternatively, if the support part  40 ′ with a bracket is a plastic piece, the plastic piece can go through the opening part of the fixing piece  50 , and then it is melted, such that the fixing piece  50  is fixed onto the support part  40 ′ with a bracket. The fixing piece  50  has a first bent part  51 , for providing the fixing piece  50  with a downward bent structure, thereby enabling the fixing piece  50  to exert pressures onto the heat plate  31 . Besides, a second bent part  52  is formed at the position where the fixing piece  50  contacts the heat plate  31 . When the second bent part  52  contacts the heat plate  31 , the contact between the fixing piece  50  and the heat plate  31  can be made much smoother and easier. The fixing piece  50  can be steadily pressed against the four sides of the upper surface of the heat plate  31  through the first bent part  51  and the second bent part  52 , such that the heat plate  31  and the heating element  20  are attached to each other tightly. 
   The invention being thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the invention, and all such modifications as would be obvious to one skilled in the art are intended to be included within the scope of the following claims.