JP3024721U - PCMCIA card case cover - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide an excellent case cover for a PCMCIA card. A case cover of a PCMCIA card obtained by mainly combining a metal cover and a plastic frame, wherein the metal cover is joined by a joint portion to form a flat cover. It is composed of a cover 11 and a second cover 12, and a plurality of convex structures 14 are formed on both sides of the first cover 11 and the second cover 12,
The plastic frame 20 is directly mounted on the metal cover 10 using an injection molding technique. In the injection molding process, the convex structures 14 on both sides of the metal cover 10 join the metal cover 10 and the plastic frame 20. For this purpose, it is entirely embedded in the plastic frame 20.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to a case cover for a peripheral card of a personal computer, and particularly to a case cover for a memory card that meets the standards specified by PCMCIA.

[0002]

[Prior art]

 The size of computer-related equipment has become smaller as technology has advanced, and the space for storing memory has become quite limited. Plug-in peripheral cards have been developed to avoid errors and improve portability. The printed circuit board is stored in the cover, making it a convenient and easy-to-use card. The PCMCIA (Personal Computer Memory Card International Association) has established standards for the specifications of cases for storing memory cards. This type of peripheral card is commonly called a PCMCIA card.

Due to operational needs, the cover of the PCMCIA card must house the printed circuit board and be insertable into the personal computer, ie it must be robust and have an insertion function. With current technology, the package structure consists of a plastic frame that protects the two metal plates and houses the printed circuit board in the center. After assembly, the two metal plates are welded together. In such a process, the number of parts to be assembled is not so large, and while assembling time and cost can be saved, problems such as deformation, dropout and poor quality are likely to occur.

In order to remedy the above drawbacks, a technique of ultrasonic welding was devised. For example, Taiwan Patent Nos. 232 and 392, "Improvement of PCMCIA Card Structure," and US Patent No. 5,397,857, "PCMCIA standard memory card frame," refer to this technology. The method used in these patents is to attach two metal plates to a plastic frame, then form the upper and lower lids and join the two lids into a case. Although this method solves some problems, at least the following problems remain as drawbacks.

[0005]

[Problems to be solved by the device]

 1． The problem of many assembly parts still exists in the case consisting of two covers. As far as material management and transportation is concerned, costs are relatively high and error prone. For example, a package maker must manufacture two types of products, an upper lid and a lower lid, and must ship two types of parts to a memory card maker. This is also inconvenient for memory card manufacturers.

2. It is easy to make mistakes in assembling the two parts of the cover. The upper and lower lids must be completely joined together, which can be a mistake in assembly line work. This is especially true if the case covers come from different manufacturers. If a defective product is found, it will be a large loss.

[0007] 3. The combination of a metal plate and a plastic frame is not ideal. For example, in the case of US Pat. No. 5,397,857, the ends of the metal plate of the stainless steel must be bent at multiple points in order to join the plastic frame. This is extremely expensive and yet such shapes are susceptible to damage.

[0008] 4. The quality of ultrasonic welding is not good. For example, in US Pat. No. 5,397,857, a large number of welding bubbles adhered to the welding edge by ultrasonic welding. Since this has to be removed manually, the cost is high and the memory card maker is forced into a great deal of trouble.

The main purpose of the present invention is to provide an excellent case cover for a PCMCIA card. The case cover is a unit in which a plastic frame is joined to one case cover by using injection molding technology.It completely eliminates the drawbacks of the two case covers, and at the same time eliminates the problem of grounding the cover body. Solve.

Another object of the present invention is to eliminate the inconvenience when joining the case cover and the plastic frame. Technically, the impact press technology is used to form convex portions on both sides of the case cover. To achieve the best bonding effect, this convex part is perforated and embedded in the same frame during injection molding of the plastic frame. The method of forming a convex portion on the case cover using the technology of impact pressing is economical in terms of production cost. Further, by forming a hole on the convex portion, the maximum bonding effect can be obtained.

Yet another object of the present invention is to provide a pioneering structure useful for case making work. It is a convex block made on a plastic frame. Assemble the PCMC IA card case cover automatically by aligning the guide slots on the top of the block with the flanges on both sides of the convex block.

Another object of the present invention is to show a new method of ultrasonic welding. It is a method of forming a groove and an energy director in the upper part of the plastic frame to effectively absorb the molten plastic material generated during ultrasonic welding. This completely solves the previously unsolved problem of dissolved bubbles.

A final object of the invention is to provide a fixed structure. The plastic frame has a fixed button and a fixed recess, and by joining the fixed button and the fixed recess, the case cover can be folded quickly and accurately. This improves assembly speed and efficiency, reduces operational errors and improves product quality.

[0014]

[Means for Solving the Problems]

 The invention according to claim 1 is a case cover of a PCMCIA card, which is obtained mainly by combining a metal cover and a plastic frame, wherein the metal cover is joined by a joint portion to form a flat cover. It is composed of a first cover and a second cover to be formed, a plurality of convex structures are formed on both sides of the first cover and the second cover, and a plastic frame is formed on the metal cover using an injection molding technique. In the process of injection molding, the convex structures on both sides of the metal cover are all embedded in the plastic frame to join the metal cover and the plastic frame, which is the first frame and the second frame. The first frame is joined to the first cover, the second frame is joined to the second cover, and the first frame and the second frame are made of gold. Coupled by folding the entire cover, finally the first frame and the second frame using the technology of ultrasonic welding is a case cover of the PCMCIA card, characterized in that it is completely sealed.

According to a second aspect of the present invention, the PCMCIA card according to the first aspect is characterized in that an arch-shaped convex structure is formed by impact pressing on both side portions of the metal cover. It is a case cover. The invention according to claim 3 is characterized in that vertical convex structures are formed on both sides of the metal cover by an impact press, and the vertical structures are pre-drilled. The case cover of the PCMCIA card according to claim 1. The invention according to claim 4 is the case cover for a PCMCIA card according to any one of claims 1 to 3, wherein the plastic frame includes a convex block formed at a joint portion. The invention according to claim 5 is characterized in that the joint portion is pre-impacted to form a collar for joining and holding the convex block. It is a case cover of PCMCIA card.

The invention according to claim 6 is the case cover of the PCMCIA card according to claim 5, characterized in that it has a protruding portion of an upright “T” -shaped structure. The invention according to claim 7 has a guide slot formed on the surface of the convex block, wherein a pawl located near the convex block and contacting the first frame and the second frame has a case cover. 7. The PCMCIA card case cover according to claim 6, wherein the PCMCIA card case cover is adapted to enter and slide into a guide slot when being bent. The invention according to claim 8 has an energy director formed on the first frame, and the energy director serves as an entrance of ultrasonic energy during ultrasonic welding. The case cover of the PCMCIA card described in any one of 1 to 3. The invention according to claim 9 has a groove formed on the second frame, and the groove completely overlaps with the energy director when the metal cover is bent to join the first frame and the second frame. The case cover of the PCMC IA card according to claim 8, characterized in that the groove can accommodate the plastic material melted by ultrasonic welding.

According to a tenth aspect of the present invention, a fixing button and a fixing recess are formed on the first frame and the second frame, respectively, and the fixing button and the fixing recess are formed by bending a metal cover. The PCMCIA card case cover according to any one of claims 1 to 3, wherein the case cover and the second frame are joined to each other when they are superposed, and the case cover joining operation can be performed accurately and quickly. Is. The invention according to claim 11 has a "T" -shaped projection portion formed by an impact press, and the projection portion is embedded in a process of injection molding to form a convex block, and each of the convex blocks is formed. Adjacent to the first and second frames with pawls and having a guide slot at the top, and folding the case cover, the pawls enter the guide slots and slide to the first and second frames respectively. The formed fixing buttons and fixing recesses are designed to be joined well when the metal cover is bent to stack the first frame and the second frame, and are formed on the first frame and the second frame, respectively. The energy director and groove are now fully overlapped when the metal cover is folded to fit the first and second frames together. The PCMCIA card case cover according to claim 2, wherein the groove can accommodate the plastic material melted by ultrasonic welding.

[0018]

[Embodiment of device]

 1 and 2 show the structure of the metal plate in the present invention. The single plate metal cover (10) consists of the first cover (11) and the second cover (12), and the two covers are joined by the joint part (13) to form a roughly flat case cover. To do. FIG. 1 is a view of the cover (10) to which the plastic frame is attached as seen from the inside. In order to increase the strength of the joint, both sides of the first cover (11) and the second cover (12) are provided with convex portions (15) formed by direct impact pressing from the cover (10). FIG. 2 is a view as seen from the outside of the cover (10), and the slot (16) forms an indentation that remains after the convex portion is formed by impact pressing.

The joint part (13) is used not only as a unit for connecting the first cover (11) and the second cover (12) but also as a curved part in the subsequent assembly. There is a protruding portion (14) at the upper part of the joint portion (13), and its detailed structure is shown in FIG. The portion is approximately "T" shaped and is also formed by direct impact pressing from the joint (13).

FIG. 4 is a view of the joint portion (13) viewed from the back. The protrusions (14) will also be used to join and hold the convex blocks in future impact presses. Figure 5 is a view of the state after joining, viewed from the back. The protruding portion (14) is completely embedded. Details of the structure of the convex block will be described later. By using the joint part (13) for joining the first cover and the second cover, the grounding problem of the cover can be solved at the same time.

As shown in FIG. 6, the convex portions (15) on both sides of the metal cover (10) have an arch shape formed by directly impact-pressing the metal plate of the cover (10). This convex part is embedded in the plastic frame in the next injection molding. There is a hole (17) formed on the convex portion (15) by an impact press, and a plastic material is packed in at the stage of injection molding. Therefore, the joining state between the metal cover (10) and the plastic frame is extremely good, and the cost of the impact press can be considerably reduced. FIG. 7 is a view of the slot (16) formed after the convex portion (15) is formed by impact pressing as viewed from the back of the metal cover (10).

FIG. 8 is a view of another cover (10) in which the structure of the convex portion (15) is different. As shown in FIG. 9, the holes (17) made on the metal cover (10) are impact pressed to form vertical convex portions (15). In addition, these vertical ridges (15) are perforated, providing excellent strength when joining with plastic frames. That is, the convex portion proposed by the present invention is formed by directly impact-pressing the metal cover, and all of them have holes. Its structure is free and the above two types are only used as examples and the types are unlimited.

As shown in FIGS. 10 to 12, the frame (20) on the upper part of the cover (10), which is made by injection molding, has a role of fixing the printed circuit board, and is folded to perform ultrasonic wave welding. Also useful when doing. Joining the frame (20) to the cover (10) using injection molding not only reduces the number of parts to assemble, but also avoids problems that occur during the assembly process. The frame (20) is composed of the first frame (21) and the second frame (22) corresponding to the first cover (11) and the second cover (12), respectively, and has a role to hold each other when making a card. There is. The convex block (23) is formed on the upper part of the joint part (13) so as to wrap the protruding part well. The mechanical strength is dramatically improved by combining the protrusions and convex blocks.

13 to 20 show various types of plastic frames used by many connector manufacturers such as MOLEX, METHOD, FOXCONN, AMP (15 pin), AMP (33 pin), BERG, HONDA, HIROSE. . All the plastic frames shown here can adopt the technology introduced by the present invention. In other words, the invention applies to all devices that meet the PCMCIA standard.

In order to increase efficiency and accuracy in assembly, one guide structure has been devised by the present invention. As shown in FIG. 21, guide slots (24) are formed on the surface of the convex block (23) so as to correspond to the collars (25) on both sides. The function of the guide structure can be seen clearly in Fig. 22. The mechanical strength at the end of the convex block (23) is relatively weak and bending marks are likely to remain. With the guide slot (24) that naturally draws the collar (25), mistakes in work can be avoided and the bending work can be performed smoothly. Figure 22 shows the first bending operation. The work process of the case cover maker ends here, and the work thereafter is handed over to the memory card maker. Thanks to the integrated case cover, it is easy to manage, transport and assemble without any operational errors.

At the final stage of the work, the printed circuit board is attached to the plastic frame (20) and the second cover (12) is bent. FIG. 22 shows a fixing recess (28) on the first frame (21) and a fixing button (29) on the second frame (22). Figures 23 and 24 show the detailed structure. When bending the first cover (11) and the second cover (12), using the convex block (23), the guide slot (24) and the brim (25), the work progresses accurately and effectively, Quality is also improved. Looking at FIG. 22, it can be seen that the energy director (26) is on the first frame (21) for efficient ultrasonic welding. The groove (27) in the position where it engages with the energy director (26) absorbs the melted plastic material and can prevent the generation of welding bubbles during ultrasonic welding. FIG. 25 is a completed view of the case.

[0027]

[Effect of device]

 The effects of the present invention are listed below. 1． As a result of the integrated cover, mistakes in assembly work can be prevented and the work of material transportation and management can be simplified. 2. Since the metal cover is connected, it is not necessary to ground the entire cover. 3. Since the plastic frame is directly injection molded on the metal cover and the number of parts is small, the whole assembly work can be simplified and there is no fear of missing parts. Four. Since the convex structure is formed by impact pressing directly from the metal cover, cost can be reduced and excellent mechanical strength can be obtained in joining with the plastic frame. Five. By taking full advantage of the mechanical structure of the convex blocks, precise, smooth and perfect folds are created when the cover is folded.

[0028] 6. The guide slots on the surface of the convex block slide and join in unison with the collars located on both sides of the convex block, so that the bending work proceeds quickly and easily, and the fixing and assembling work also proceeds smoothly. 7. Due to the use of grooves and energy directors that absorb the melted plastic material, ultrasonic welding does not create welding bubbles. 8. The case cover has a fixing recess and a fixing button, so folding can be done quickly and accurately. 9. As ultrasonic welding is used in the sealing process, the whole joint is fast and good with no distortion or chipping and excellent quality is obtained.

In summary, it can be seen that the present invention is unique and creative, not found in any available publication, and meets all the criteria set forth by the Utility Model Law. The above-mentioned examples are merely examples of relatively excellent applications of the present invention, and do not limit the scope of the claims for utility model registration. Therefore, all similar products and modifications thereof that can be regarded as within the scope of the utility model registration request of the present invention are also included within the scope of the utility model registration request of the present invention.

[Brief description of drawings]

FIG. 1 is a view showing the inside and the outside of a metal plate.

FIG. 2 is a view showing the inside and the outside of a metal plate.

FIG. 3 is a diagram showing a structure of a connection portion.

FIG. 4 is a diagram showing a structure of a connecting portion.

FIG. 5 is a diagram showing a structure of a connection portion.

FIG. 6 is a view showing a convex portion of a metal plate.

FIG. 7 is a view showing a convex portion of a metal plate.

FIG. 8 is a diagram showing another type of metal plate and a convex portion.

FIG. 9 is a view showing another type of metal plate and a convex portion.

FIG. 10 is a diagram showing the inside and the outside of a metal plate to which a plastic frame is joined.

FIG. 11 is a view showing the inside and the outside of a metal plate to which a plastic frame is joined.

FIG. 12 is a diagram showing the inside and the outside of a metal plate to which a plastic frame is joined.

FIG. 13 is a view showing plastic frames having various structures.

FIG. 14 is a view showing plastic frames having various structures.

FIG. 15 is a diagram showing plastic frames of various structures.

FIG. 16 is a view showing plastic frames of various structures.

FIG. 17 is a diagram showing plastic frames of various structures.

FIG. 18 is a view showing plastic frames having various structures.

FIG. 19 is a view showing plastic frames having various structures.

FIG. 20 is a view showing plastic frames having various structures.

FIG. 21 is a view showing a guide structure useful for an assembly work.

FIG. 22 is an intermediate view of assembly.

FIG. 23 is a view showing a fixing recess and a fixing button.

FIG. 24 is a diagram showing a fixing recess and a fixing button.

FIG. 25 is a completed drawing.

[Explanation of Codes] 10 Metal Cover 11 First Cover 12 Second Cover 13 Joining Part 14 Projecting Part 15 Convex Structure 16 Slot 17 Hole 20 Plastic Frame 21 First Frame 22 Second Frame 23 Convex Block 24 Guide Slot 25 Collar 26 Energy director 27 Groove 28 Fixed recess 29 Fixed button

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Office reference number FI technical display location H05K 5/03 A 7301-4E // B29K 105: 22 B29L 31:34

Claims (11)

[Scope of utility model registration request] 1. A case cover for a PCMCIA card, which is obtained mainly by combining a metal cover and a plastic frame, wherein the metal cover is joined by a joint portion to form a flat cover. Consisting of a second cover,
A plurality of convex structures are formed on both sides of the first cover and the second cover, and a plastic frame is directly mounted on the metal cover by using an injection molding technique. The convex structures on both sides of the cover are all embedded in the plastic frame to join the metal cover and the plastic frame, and this plastic frame consists of the first frame and the second frame, and the first frame is the first cover, The second frame is joined to the second cover, the first frame and the second frame are folded and joined through the whole metal cover, and finally the technology of ultrasonic welding is used to completely seal the first frame and the second frame. A case cover for PCMCIA cards. 2. The case cover for a PCMCIA card according to claim 1, wherein arc-shaped convex structures formed by impact pressing are formed on both sides of the metal cover. 3. A vertical convex structure is formed by impact pressing on both sides of the metal cover, and the vertical structure is pre-drilled. PCMCIA card case cover described in. 4. The case cover for a PCMCIA card according to claim 1, wherein the plastic frame encloses a convex block formed at a joint portion. 5. The case cover for a PCMCIA card according to claim 4, wherein the joint portion is pre-impacted to form a collar for joining and holding the convex block. 6. The case cover for a PCMCIA card according to claim 5, wherein the case cover has a protruding portion of an upright “T” -shaped structure. 7. A claw that has a guide slot formed on the surface of the convex block, is located near the convex block, and is in contact with the first frame and the second frame when the case cover is bent. The PCMCIA card case cover according to claim 6, wherein the PCMCIA card case cover is adapted to enter and slide into. 8. The method according to claim 1, further comprising an energy director formed on the first frame, wherein the energy director serves as an approach path for ultrasonic energy during ultrasonic welding. PCMCIA described in
Card case cover. 9. A groove formed on the second frame,
This groove completely overlaps the energy director when the metal cover is bent and the first frame and the second frame are joined, so that the groove can accommodate the plastic material melted by ultrasonic welding. The case cover for a PCMCIA card according to claim 8, wherein. 10. A fixing button and a fixing recess formed on the first frame and the second frame, respectively, wherein the fixing button and the fixing recess are formed when the metal cover is bent and the first frame and the second frame are overlapped with each other. The case cover for a PCMCIA card according to any one of claims 1 to 3, wherein the case cover can be joined accurately and quickly. 11. A "T" shaped protrusion made by impact pressing, the protrusion being embedded in an injection molding process to form a convex block, each convex block having a pawl. Adjacent to the 1st frame and 2nd frame, and having a guide slot in the upper part, when the case cover is bent, the claws enter the guide slot and slide, fixing with the fixing buttons formed on the 1st frame and 2nd frame respectively. The recesses are designed to fold up the metal cover so that they fit well when the first and second frames are stacked together, and the energy directors and grooves formed on the first and second frames, respectively, have metal covers. It is designed to be completely overlapped when the first frame and the second frame are folded by bending the , Case cover of the PCMCIA card of claim 2, characterized in that is adapted to accommodate the plastic material having grooves melted by ultrasonic welding.