An aluminum alloy die-cast base structure

Abstract

The present invention discloses an aluminum alloy die-cast base structure, which includes a base and rubber layers wrapped around the top and bottom surfaces of the base. An installation boss is provided at the center of the upper end surface of the base, and a baffle surrounding the base is arranged at the edge of the upper end surface of the base. A glue groove is provided between the baffle and the installation boss, and a plurality of glue passing openings are formed in the glue groove. The plurality of glue passing openings are arranged on the baffle at intervals, and the glue passing openings are used to connect the rubber layers on both sides of the top and bottom surfaces of the base together in an integral overmolding die. The present invention provides an aluminum alloy die-cast base structure, which improves production efficiency, reduces processes, enables two rubber layers to be integrally coated on the base, and makes the combination with the base more reliable.

Description

Technical Field

[0001] The present invention relates to a structure of an aluminum alloy die-cast base. Background Art

[0002] The base of an automotive antenna is an aluminum alloy die-casting. To meet the requirement that the antenna is installed on the top of the vehicle without water leakage, a rubber layer needs to be installed around the aluminum alloy die-casting to achieve the functions of buffering and waterproofing. In the prior art with the authorized publication number CN106099310B, the rubber layer is formed on the base through a rubber coating process. The rubber layer on the top surface and the rubber layer on the bottom surface are connected by a number of rubber through-holes. However, a plurality of through-holes need to be opened around the base of the aluminum alloy die-casting, which makes the process complex and reduces the metal strength of the base. The rubber columns in the through-holes connect the rubber layer on the top surface and the rubber layer on the bottom surface. The rubber columns will deform or break under stress and are prone to aging. Therefore, the positioning function of the rubber columns is not reliable. Summary of the Invention

[0003] The purpose of the present invention is to provide a structure of an aluminum alloy die-cast base, which improves production efficiency, reduces processes, enables two rubber layers to be integrally coated on the base, and makes their combination with the base more reliable.

[0004] To achieve the above purpose, the technical solution of the present invention is to design a structure of an aluminum alloy die-cast base, including a base and rubber layers wrapped around the top surface and the bottom surface of the base. An installation boss is provided at the center of the upper end surface of the base, and a baffle surrounding the base is provided at the edge of the upper end surface of the base. A rubber groove is provided between the baffle and the installation boss. The rubber groove is provided with a number of rubber through-holes. The rubber through-holes are arranged at intervals on the baffle. The rubber through-holes are used to connect the rubber layers on both sides of the top surface and the bottom surface of the base in an integrally molded rubber coating mold.

[0005] By adopting the above technical solution, the rubber groove is used to accommodate the rubber layer on the top surface of the base, and the rubber through-holes are used to connect the rubber layer on the top surface of the base and the rubber layer on the bottom surface of the base, so that the rubber layers on the upper and lower sides of the base are connected into a whole and coated on the outside of the base. The rubber groove plays a role of limiting and fixing the integral rubber layer, making the integral rubber layer more reliably combined with the base; the installation boss is used to install the antenna main board, and installation holes and installation posts for fixing the antenna main board are provided at both ends of the installation boss.

[0006] Preferably, the rubber through-holes include main rubber through-holes and auxiliary rubber through-holes. The number of the main rubber through-holes is 4, and the 4 main rubber through-holes are respectively located at the four corners of the base. The number of the auxiliary rubber through-holes is 6. Through the interval arrangement of the rubber through-holes in the circumferential direction of the base, the rubber layers on the top surface and the bottom surface of the base are more tightly connected.

[0007] Preferably, glue layer positioning posts are provided in each of the four main glue passing openings. Through the glue layer positioning posts, the glue layer is more firmly arranged in the glue groove.

[0008] Preferably, glue layer positioning blocks are provided on the lower end surface of the base. The number of the glue layer positioning blocks is four, and the positions of the glue layer positioning blocks correspond to the positions of the glue layer positioning posts one by one. Through the glue layer positioning blocks, the combination of the glue layer and the bottom surface of the base is more reliable.

[0009] Preferably, a groove for accommodating the antenna element is formed on the mounting boss. The antenna element is arranged on the antenna main board and is received in the groove, which can effectively avoid the interference of other components to the antenna element and has a protective effect on the antenna element.

[0010] The advantages and beneficial effects of the present invention are as follows: The structure of the aluminum alloy die-cast base is locally changed. A glue groove and glue passing openings on the side wall of the glue groove are provided on the base. During the process of covering with rubber, the rubber on both the top surface and the bottom surface of the base is connected to each other, so that it is integrally covered on the base. Through the cooperation of the glue groove, the glue layer positioning posts and the glue layer positioning blocks, the integrally formed rubber glue layer is more firmly covered on the aluminum alloy die-cast base. Description of the Drawings

[0011] Figure 1 is a schematic diagram of the present invention.

[0012] Figure 2 is a side schematic diagram of the present invention. Detailed Embodiments

[0013] The following combines the drawings and embodiments to further describe the detailed embodiments of the present invention. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention, and cannot be used to limit the protection scope of the present invention.

[0014] The technical solution specifically implemented by the present invention is:

[0015] As Figure 1 and Figure 2 shown, an aluminum alloy die-cast base structure includes a base 1 and a glue layer (not shown) wrapped on the top surface and the bottom surface of the base. Specifically, a mounting boss 2 is provided at the center of the upper end surface of the base 1, a baffle 3 surrounding the base is arranged at the edge of the upper end surface of the base 1, a glue groove 4 is provided between the baffle 3 and the mounting boss 2, the glue layer on the top surface of the base 1 is arranged in the glue groove 4, and a plurality of glue passing openings 5 are formed on the side wall of the glue groove 4. The glue passing openings 5 do not need to punch holes in the base 1 and will not affect the metal strength of the base 1. The glue layer on the top surface of the base 1 is connected to the glue layer on the bottom surface of the base 1 through the plurality of glue passing openings 5, so that the glue layers on both the upper and lower sides of the base 1 are connected into a whole.

[0016] In this embodiment, the base 1 is installed on the roof (not shown), and a cylindrical hole 6 is provided at the center of the bottom surface of the base 1, and the base 1 is connected to the roof through the cylindrical hole 6. A cover body (not shown) is installed on the top surface of the base 1, and the cover body can be in the shape of a shark fin. The cover body is clamped on the top surface of the base 1. Specifically, a card slot and a plug-in hole can be provided at the lower end of the cover body, and a plurality of cover body mounting buckles 7 are respectively provided on the vertical side surfaces of the baffle 3 of the base 1, and the cover body mounting buckles 7 are clamped with the card slots. A pin 8 is provided at the top end of the adhesive layer positioning column 11, and the pin 8 is plugged with the plug-in hole, thereby realizing the connection between the cover body and the base 1.

[0017] The glue ports 5 include a main glue port 9 and an auxiliary glue port 10. The number of the main glue ports 9 is 4, and the 4 main glue ports 9 are respectively located at the four corners of the base 1. The number of the auxiliary glue ports 10 is 6. The glue ports 5 are arranged at intervals in the circumferential direction of the base 1, so that the glue layer in the glue groove 4 and the glue layer on the bottom surface of the base 1 are connected as a whole.

[0018] The four main glue-passing ports 9 are each provided with a glue-layer positioning column 11. The glue-layer positioning column 11 enables the glue layer to be more stably arranged in the glue groove 4.

[0019] The lower end surface of the base 1 is provided with a glue layer positioning block 12, and the number of the glue layer positioning blocks 12 is 4, and the positions of the glue layer positioning blocks 12 correspond to the positions of the glue layer positioning columns 11. Through the glue layer positioning blocks 12, the combination of the glue layer and the bottom surface of the base 1 is more secure.

[0020] The mounting boss 2 is provided with a groove 13 for accommodating the antenna element. The antenna element is arranged on the antenna mainboard and is accommodated in the groove 13. Specifically, the antenna element can be arranged on a circuit board (not shown) by mechanical fasteners or welding, and the circuit board provided with or supporting the antenna element is arranged on the mounting boss 2, so that the antenna element extends upward approximately in a direction perpendicular to the mounting boss to be accommodated in the groove 13. The circuit board can be fixed on the mounting boss 2 by bolts. Specifically, the mounting boss 2 can be provided with a mounting hole 14 and a mounting column 15 for fixing the circuit board, a bolt can be passed through the mounting hole 14, and the mounting column 15 is plugged with the circuit board to fix the circuit board.

[0021] The production process of the aluminum alloy die-casting base comprises:

[0022] Step 1: Prepare the aluminum alloy base 1. Press the liquid aluminum alloy in the furnace into the mold in the die-casting machine to form the base 1 by die-casting. After taking out the part, perform deburring, removing overflow wells, shot peening, tapping, full inspection, and electroplating after cooling to obtain the aluminum alloy base 1 (where the components and component percentages of the aluminum alloy base 1 are the same as those in the prior art).

[0023] Step 2: Place the base 1 in Step 1 into the cavity of the integrated overmolding mold, close the mold, and inject the fluid rubber into the cavity of the integrated overmolding mold on the injection molding machine, so that the base 1 is overmolded in the integrated overmolding mold. At this time, the rubber forms a rubber layer in the rubber groove 4 and on the bottom surface of the base 1, and the rubber in the rubber groove 4 is connected to the rubber on the bottom surface through a plurality of rubber passing ports 5 on the side wall.

[0024] Step 3: Open the mold and take out the base 1 with overmolding completed.

[0025] The advantages and beneficial effects of the present invention are as follows: The structure of the aluminum alloy die-cast base is locally changed. There is a rubber groove 4 and rubber passing ports 5 on the side wall of the rubber groove on the base 1, which connect the rubber on the upper and lower sides of the base 1 during the process of overmolding the rubber, so that it is integrally overmolded on the base 1. Through the cooperation of the rubber groove 4, the rubber layer positioning posts 11, and the rubber layer positioning blocks 12, the integrated rubber layer is more firmly overmolded on the aluminum alloy die-cast base 1.

[0026] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the technical principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. An aluminum alloy die-cast base structure, comprising a base and a rubber layer wrapped around the top and bottom surfaces of the base, characterized in that, An installation boss is provided at the center of the upper end surface of the base. A baffle surrounding the base is provided at the edge of the upper end surface of the base. A glue groove is provided between the baffle and the installation boss. The glue groove is provided with a plurality of glue passing openings. The plurality of glue passing openings are arranged at intervals on the baffle. The glue passing openings are used to connect the glue layers on both the top surface and the bottom surface of the base in an integral overmolding die. The glue passing openings include main glue passing openings and auxiliary glue passing openings. The number of the main glue passing openings is 4, and the 4 main glue passing openings are respectively located at the four corners of the base. The number of the auxiliary glue passing openings is 6. Glue layer positioning columns are provided in all of the 4 main glue passing openings.

2. The structure of an aluminum alloy die-cast base according to claim 1, characterized in that, Glue layer positioning blocks are provided on the lower end surface of the base. The number of the glue layer positioning blocks is 4, and the positions of the glue layer positioning blocks correspond to the positions of the glue layer positioning columns one by one.

3. A structure of an aluminum alloy die-cast base according to claim 2, characterized in that, A groove for accommodating antenna elements is provided on the installation boss.

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