Patent Publication Number: US-2009226703-A1

Title: Adhesive bonding assembly and method for making the same

Description:
BACKGROUND 
     1. Technical Field 
     The present disclosure generally relates to an adhesive bonding assembly and a method for making the same. 
     2. Description of the Related Art 
     Generally, two components of an electronic device may be bonded to each other by means such as hot-pressure welding, cold-pressure welding, or rivet jointing. However, if the components are small or a nice appearance is required, the components may be bonded to each other by an adhesive bonding technique to form an adhesive bonding assembly. 
     Referring to  FIG. 8 , one such adhesive bonding assembly  100  includes a first component  101  having a first bonding surface  103  and a second component  105  having a second bonding surface  107  corresponding to the first bonding surface  103 . The first bonding surface  103  and the second bonding surface  107  are both coated with an adhesive (not labeled). The first component  101  is bonded to the second component  105  by the adhesive. However, if the first component  101  is not precisely positioned to a predetermined area of the second bonding surface  107 , the adhesives are removed from the first and second bonding surfaces  103 ,  107 . After the adhesives are removed, the first and second bonding surfaces  103 ,  107  are coated with the adhesive again so that the first component  101  may be repositioned to the predetermined area of the second surface  107 . If the first component  101  is not precisely positioned to the predetermined area of the second surface  107 , it is troublesome to adjust the first component  101  and an efficiency of manufacturing the adhesive bonding assembly  100  is relatively low. In addition, if too much of the adhesive is coated on the first bonding surface  103  or the second bonding surface  107 , the adhesive may overflow, resulting in an unattractive appearance of the adhesive bonding assembly. Therefore, the overflowing adhesive is removed from the adhesive bonding assembly further decreasing the efficiency of manufacturing the adhesive bonding assembly  100 . 
     Therefore, a new adhesive bonding assembly and a method for making the same is desired to overcome the above-described shortcomings. 
     SUMMARY 
     An adhesive bonding assembly includes a first component, a second embodiment, and an adhesive substance. The first component includes a first bonding surface and an operation surface opposite to the first bonding surface. A channel is defined in the first component extending from the first bonding surface to the operation surface. The second component includes a second bonding surface contacting the first bonding surface. The adhesive substance is received in the channel for bonding the first component and the second component together. 
     A method for making an adhesive bonding assembly, includes providing a first component including a first bonding surface and an operation surface opposite to the first bonding surface, a second component including a second bonding surface, and an adhesive substance for bonding the first component and the second component together, wherein a channel is defined in the first component extending from the first bonding surface to the operation surface; positioning the first component on the second component such that the first bonding surface contacts the second bonding surface of the second component, and injecting the adhesive substance into the channel of the first component such that the first component is bonded to the second component by the adhesive substance. 
     Other advantages and novel features will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present adhesive bonding assembly. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views, and all the views are schematic. 
         FIG. 1  is an isometric view of a first embodiment of an adhesive bonding assembly. 
         FIG. 2  is a top view of the adhesive bonding assembly shown in  FIG. 1 . 
         FIG. 3  is a cross-sectional view of the adhesive bonding assembly shown in  FIG. 1 , taken along line III-III thereof. 
         FIG. 4  is a top view of a second embodiment of the adhesive bonding assembly. 
         FIG. 5  is a cross-sectional view of the adhesive bonding assembly shown in  FIG. 4 , taken along line V-V thereof. 
         FIG. 6  is a top view of a third embodiment of the adhesive bonding assembly. 
         FIG. 7  is a cross-sectional view of the adhesive bonding assembly shown in  FIG. 6 , taken along line VII-VII thereof. 
         FIG. 8  is an isometric view of a typical adhesive bonding assembly. 
     
    
    
     DETAILED DESCRIPTION OF THE EMBODIMENTS 
     Reference will now be made to the drawings to describe various inventive embodiments of the present adhesive bonding assembly in detail. 
     Referring to  FIG. 1 , a first embodiment of an adhesive bonding assembly  10  includes a first component  11 , a second component  13 , and an adhesive substance  14  for bonding the first component  11  and the second component  13  together tightly. 
     The first component  11  includes a first bonding surface  15  and an operation surface  17  opposite to the first bonding surface  15 . The first component  11  defines a plurality of channels  19  extending from the first bonding surface  15  to the operation surface  17 . In the first embodiment, the channels  19  are circular through holes. The second component  13  includes a second bonding surface  21  contacting the first bonding surface  15 . The first bonding surface  15  is smaller than the second bonding surface  21 . 
     Referring to  FIGS. 2 and 3 , when the first bonding surface  15  abuts the second bonding surface  21 , the adhesive substance  14  in a liquid state is injected into the channels  19  and the adhesive substance  14  flows into a portion of the second bonding surface  21 . Thus, the first component  11  is bonded to the second component  13  by the adhesive substance  14 . If too much of the adhesive substance  14  is injected, the excessive adhesive substance  14  is retained in the channels  19 , thus preventing the excessive adhesive substance  14  from overflowing out of the first bonding surface  15 . 
     Referring to  FIGS. 4 and 5  together, a second embodiment of an adhesive bonding assembly  20  is similar in principle to the first embodiment of the adhesive bonding assembly  10 . The adhesive bonding assembly  20  includes a first component  25 , a second component  26 , and an adhesive substance  14  for bonding the first component  25  and the second component  26  together tightly. The first component  25  defines a plurality of channels  29  and includes a first bonding surface  31  and an operation surface  33  opposite to the first bonding surface  31 . The channels  29  extend from the first bonding surface  31  to the operation surface  33 . The second component  26  includes a second bonding surface  35  contacting the first bonding surface  31 . However, in the second embodiment, the channels  29  are frustoconical-shaped through holes. A diameter of each channel  29  decreases from the first bonding surface  31  to the operation surface  33 . Therefore, contact surfaces between the second bonding surface  35  and the adhesive substance  14  are increased thereby increasing the bonding area between the first and second component  25 ,  26 . 
     Referring to  FIGS. 6 and 7 , a third embodiment of an adhesive bonding assembly  30  includes a first component  37 , a second component  38 , and an adhesive substance  14  for bonding the first component  37  and the second component  38  together tightly. The first component  37  defines a channel  41  and includes an operation surface  43  and a first bonding surface  45  opposite to the operation surface  43 . The channel  41  extends from the operation surface  43  to the first bonding surface  45 . The second component  38  includes a second bonding surface  47  contacting the first bonding surface  45 . In the third embodiment, the channel  41  is a through hole extending through to a cavity  44  defined in the first bonding surface  45 . The cavity  44  does not extend past the first bonding surface  45 . The cavity  44  allows the bonding area between the first and second component  37 ,  38  to be large. Therefore, a bonding strength between the first component  37  and the second component  38  is enhanced. 
     An embodiment of a method for making the above-described adhesive bonding assemblies  10 ,  20 ,  30  includes the steps described below. Depending on the embodiment, certain of the steps described below may be removed, others may be added, and the sequence of steps may be altered. 
     In a first step, a first component  11 ,  25 ,  37 , a second component  13 ,  26 ,  38 , and an adhesive substance  14  for bonding the first component  11  and the second component  13  together are provided. In a second step, the first component  11 ,  25 ,  37  is positioned on the second component  13 ,  26 ,  38  with the first bonding surface  15 ,  31 ,  45  abutting a predetermined area of the second bonding surface  21 ,  35 ,  47 . In a third step, the adhesive substance  14  in a liquid state is injected into the channels  19 ,  29 ,  41 . The adhesive substance  14  flows into a portion of the predetermined area of the second bonding surface  21 . When the adhesive substance  14  in a liquid state solidifies, the first component  11  is bonded to the second component  13  by the adhesive substance  14 . 
     In this method the first component  11  is positioned on the predetermined area on of the second bonding surface  21  of the second component  13  prior to injecting the adhesive substance  14  into the channels  19 , so that the first component  11 ,  25 ,  37  may be positioned on the predetermined area of the second bonding surface  21 ,  35 ,  47 . Therefore, an efficiency of making the adhesive bonding assembly  10  is greatly improved. 
     It may be appreciated that the channels  19 ,  29 ,  41  may be other shapes, such as rectangular holes and triangular holes. 
     It is believed that the present embodiments and their advantages will be understood from the foregoing description, and it will be apparent that various changes may be made thereto without departing from the spirit and scope of the disclosure or sacrificing all of its material advantages, the examples hereinbefore described merely being exemplary embodiments of the disclosure.