TWM454702U - The third material is formed by molding waterproof device - Google Patents

Description

Waterproof component formed by three-die molding

The present invention relates to a waterproof component, in particular to a waterproof component formed by three-die molding by means of die-bonding to achieve dissimilar material bonding.

With the advancement of communication technology and electronic technology, electronic devices with various functions, such as mobile phones, multimedia players, notebook computers, etc., have become indispensable tools for modern people, and different kinds of electronic devices are nowadays. It has been integrated into one, making it impossible to use the mobile phone to listen to music, surf the Internet, edit files, or use a personal computer to make calls. The electronic devices are composed of a plurality of different precision electronic components, which greatly improve the aforementioned performance of each of the electronic devices, but are most afraid of contact with water to cause short circuit or moisture in use. Corrosion damage occurs.

In a general design, usually a circuit board is disposed in the electronic device, and the connectors and electronic components are respectively soldered and fixed on the circuit board to be electrically connected to each other and perform information transmission and calculation, and most of the electronic devices Although they are covered with a beautifully designed outer casing to prevent external dust and moisture from coming into contact with the internal precision electronic components, the electronic devices usually have external interfaces in order to receive external electronic signals and power sources. Department configuration Electronic components that are transceived or docked, such as antennas, connectors, etc., because the electronic components are not closedly assembled on the electronic devices, so if the user uses the electronic device in a wet weather, or accidentally hits When the water-containing object (such as a water cup) is turned around the electronic device, moisture and moisture from the outside can penetrate into the interior of each electronic device through the gap in the connector, resulting in the precision electronic components in the electronic device. The problem of short circuit or erosion damage due to contact with water or moisture causes great inconvenience to the user.

Taking an electronic device as an example, such as a mobile phone, a tablet computer or a digital camera, etc., such an electronic device is provided with a transmission port for connecting a transmission line, and when one of the transmission ports is in a non-use state, a cover body is used. Covering the interface of the transfer port, or further providing a plug body on one side of the cover body, so that the cover body covers the interface of the transfer port, and the plug body can be stuffed in the joint groove of the transfer port, so that the transfer port can be reached. The effect of external closure, but with basic waterproof function.

Generally, the waterproof cover system for electronic devices is formed by double injection molding of plastic, and the waterproof cover body is formed by a one-time construction method, and the waterproof cover body after molding has different soft and hard parts through the characteristics of different plastics. The soft plastic part is a rotatable part that is connected to the body, and the hard plastic part is used for the cover part of the enclosure, and can be used for the transmission port of the electronic device. However, when different plastics are injected and joined, because of their different chemical properties, the compatibility will affect the bonding strength and bonding effect of the joint surface. Therefore, the two materials will select plastics with better compatibility, so that plastics can be achieved. Good joint. If the waterproof cover is to be joined to a third plastic that is not compatible (the different materials are connected), the third plastic must be formed first, and then the formed waterproof cover and the third plastic are adhered with an adhesive to prevent the waterproof cover. The joint between the body and the third plastic is not stable, so it is against In the process of the water cover body, it is necessary to add a plurality of steps, and it is impossible to form it at one time.

Since the prior art is still unable to perfect such problems, it is necessary to break through and solve them. Therefore, how to improve convenience, practicability and economic benefits is a key project that the industry should strive to solve and overcome.

Therefore, the creator of this case has started to develop its solution in view of the fact that the waterproof components are not ideal, and hopes to develop a more convenient, practical and economical use of three materials. The molded waterproof components are used to promote the development of this industry.

The purpose of the present invention is to provide a rubber material which is poorly compatible with other plastics by using a low temperature bridging agent, so that the rubber material can be stably bonded to the plastic to be joined at a thermosetting temperature similar to that of other plastics. In order to improve the compatibility of the rubber material with other plastics, a three-shot injection method is used to form a finished product in one shot, and the rubber material is mixed with the low temperature bridging agent to make the rubber material compatible with other plastics. Ascending, the rubber material and the plastic can be tightly joined to achieve the purpose of the dissimilar material joining, and the number of times of execution of the component injection molding is reduced.

For the purpose of the above, the present invention provides a waterproof component formed by three-die molding, which comprises a first injection member, a second injection member molded to the first injection member, and a rubber waterproof member. The mold is connected to one side of the first injection member.

1‧‧‧Waterproof components

10‧‧‧Cleaning pieces

20‧‧‧Connecting parts

22‧‧‧ Positioning parts

30‧‧‧Waterproof plugs

32‧‧‧矽Rubber material

34‧‧‧Low temperature bridging agent

36‧‧‧ convex ring

40‧‧‧Interactive surfactant

50‧‧‧Electronic devices

52‧‧‧ slots

54‧‧‧ interface

56‧‧‧ Sockets

The first drawing is a schematic structural view (1) of the first preferred embodiment of the present invention; the second drawing is a schematic structural view of the first preferred embodiment of the present invention (2); A schematic diagram of the implementation of the preferred embodiment; and a fourth diagram is a schematic structural view of the second preferred embodiment of the present invention.

In order to give your reviewers a better understanding and understanding of the structural features and the efficacies achieved, please refer to the preferred embodiment diagrams and detailed descriptions to illustrate the following: due to the use of conventional waterproof components In the case of injection molding, it is necessary to select a plastic with better compatibility. If the plastic is not compatible with the joint, it is limited by the chemical properties of the plastic (such as the thermoplastic temperature), and direct injection molding may result in Since the joint surface is unstable, it is usually made of an adhesive-bonded plastic to stabilize the joint surface and achieve the purpose of joining the different materials. However, it is necessary to add a plurality of processes.

In view of this, this creation proposes a technique for improving the shortcomings of the prior art, using a three-material molded one-time molded waterproof component, and solving the problem of compatibility between materials, which mainly includes a first shot, a first a second injection member and a rubber waterproof member, wherein the second injection member is molded to the first injection member in an injection molding manner, and the rubber waterproof member is molded on one side or the periphery of the first injection member by hot pressing or injection molding. The series are successively molded by injection, hot pressing/ejection, and the creation is further illustrated by taking waterproof components as an example: First, please refer to the first figure and the second figure, which is the first of the creation. The schematic diagram (1) of the preferred embodiment and the schematic diagram (2) of the structure are in an electronic device. For example, the waterproof cover 1 of the present embodiment includes a cover member 10, a connector member 20 and a waterproof plug member 30. The cover member 10 is formed by injection molding, and the connector member 20 is molded and molded to the cover member 10. The waterproof plug member 30 is molded on the inner side of the cover member 10 by hot pressing or injection molding; that is, The creation is performed in a mold (not shown) for the first time to form the cover member 10, and the connector member 20 is secondarily injection molded in the mold, so that the connector member 20 is molded to the cover member. 10, after the hot plug or the third injection molding the waterproof plug 30, the waterproof plug 30 is molded to the cover member 10; wherein the first injection molded cover member 10 and the second injection molding The connectors 20 can also be reversed in sequence.

Referring to the third figure, the cover member 10, the connecting member 20 and the waterproof plug member 30 are formed in one piece through a three-material mold. The cover member 10 is a rigid plastic member for covering an electronic device 50. The connector 54 is configured to provide a basic waterproof function. The connector 20 is a soft plastic member that is inserted into the insertion hole 56 of the electronic device 50 to form a torque-proof member. The waterproof plug 30 is connected to the inside of the cover member 10 through a hot press or injection molding die for filling the slot 52 of the electronic device 50 to improve the waterproofness of the electronic device 50. In other embodiments, the waterproof plug 30 can be heat-pressed or injection molded on the periphery of the cover member 10, or a peripheral portion of the waterproof plug member 30 can be further provided with a convex ring portion 36.

The waterproof plug member 30 includes a rubber material 32 and a low temperature bridging agent 34. The low temperature bridging agent 34 is disposed and mixed with the rubber material 32. The low temperature bridging agent 34 is a platinum bridging agent. When the cover member 10 and the waterproof plug member 30 are joined, if the temperature of the rubber is too high, the structure of the plastic is broken, so the rubber After the material 32 is mixed with the low temperature bridging agent 34, it can be stably joined (molded) at a temperature close to the connecting member 20 and the cover member 10, and the joint surface formed by hot pressing or injection molding has good stability.

The slot shape of the slot 52 of the electronic device 50 is similar to or different from the shape and size of the waterproof plug 30, so that the waterproof plug 30 can be stuffed into the slot 52 and pressed by the collar portion 36. The watertightness is increased, and the shape and size of the interface 54 are similar to or the same as the waterproof member formed by the cover member 10 and the connecting member 20 protruding from the insertion hole 56. The connector can cover the interface 54 to achieve the function of sealing the socket 52 and waterproofing. In addition, the connector 20 is further provided with a positioning member 22, and the positioning member 22 is inserted into the insertion hole of the electronic device 50. In the 56, the waterproof member is fixed to the interface 54 without falling off, and the cover member 10 can be moved by the soft plastic property of the connecting member 20. Of course, the connecting member 20 is connected to the electronic device 50. The composition may also be implemented in other ways, without being limited thereto.

Please refer to the fourth figure, which is a structural schematic diagram of a second preferred embodiment of the present invention, which is based on the structure of the first preferred embodiment; as shown, in order to lift the cover member 10 and the The sealing member 30 is further provided with a stabilizer. The side of the cover member 10 is further provided with a surfactant 40 connected to the waterproof plug member 30. The surfactant 40 can weld the cover member 10 to the plastic before the molding and the waterproof plug. The rubber material 32 containing the low temperature bridging agent 34 before the forming of the member 30 achieves good bonding during hot pressing or injection sintering, and the structure of the bonding is stabilized. The surfactant is only for further lifting the cover member 10 and the The sealing of the waterproof plug 30 is stable.

In addition, the waterproof plug 30 can be not only padded in the joint groove 52, Further, a notch (not shown) may be further disposed, and the notch is disposed corresponding to the shape of the component in the slot 52, so that the waterproof plug 30 is disposed in the slot 52 and can be connected to the slot 52. The components are closely attached to each other to reduce the occurrence of gaps and improve water repellency.

In summary, the creation of the plastic and rubber materials with poor compatibility, by the rubber material mixed bridging agent, the rubber material can be stably connected to the plastic at a thermosetting temperature similar to that of the plastic, and through The three-material injection molding is one-time molding, so that the plastic and the rubber material can be stably joined, and the conventional method of bonding the dissimilar materials by the adhesive is improved, thereby omitting the process and cost required for the manufacturing process.

Although the present invention has been disclosed in the above preferred embodiments, it is not intended to limit the present invention, and anyone skilled in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of protection is subject to the definition of the scope of the patent application.

1‧‧‧Waterproof components

10‧‧‧Cleaning pieces

20‧‧‧Connecting parts

22‧‧‧ Positioning parts

30‧‧‧Waterproof plugs

Claims (14)

A waterproof member formed by three-material molding, comprising: a first injection member; a second injection member coupled to the first injection member; and a rubber waterproof member molded to the first injection member One side or the periphery. The waterproof member formed by the three-material molding as described in claim 1, wherein the first injection member is a cover member. A waterproof member formed by three-die molding as described in claim 2, wherein the cover member is a rigid plastic member. The waterproof member formed by the three-material molding as described in claim 3, wherein the second injection member is a connecting member. The waterproof member formed by the three-material molding as described in claim 4, wherein the connecting member is a soft plastic member. The waterproof member formed by the three-material molding as described in claim 5, wherein the rubber waterproof member is a waterproof plug. The waterproof member formed by the three-material molding as described in claim 1, wherein one side of the first injection member is provided with a surfactant, and the rubber waterproof member is molded to the surfactant. The waterproof member formed by the three-material molding as described in claim 1, wherein the rubber waterproof member further comprises a low temperature bridging agent, and the low temperature bridging agent is disposed and mixed with the rubber waterproof member. Waterproof component formed by three-die molding as described in claim 8 The rubber waterproof member is a rubber waterproof member. The waterproof member formed by the three-material molding as described in claim 8 wherein the low temperature bridging agent is a platinum bridging agent. The water-repellent component formed by the three-material molding as described in claim 6 , wherein a periphery of the waterproof plug is further provided with a convex ring portion. The waterproof member formed by the three-material molding as described in claim 1, wherein the rubber waterproof member is molded to the first injection member by hot pressing or injection molding. The waterproof member formed by the three-material molding as described in claim 1, wherein the rubber waterproof member is provided with a convex ring portion around the periphery. The waterproof member formed by the three-material molding as described in claim 1, wherein the rubber waterproof member is provided with a notch.