Split type die casting non-demolding direction positioning structure, instrument desk pipe beam and vehicle

Abstract

The invention provides a split type die casting non-demolding direction positioning structure, an instrument desk pipe beam and a vehicle. The split type die casting positioning structure in the non-demolding direction comprises a die casting and a positioning device, the positioning pin is arranged in the non-demolding direction of the die casting, the positioning pin is integrally formed and comprises a positioning end part, a middle part and a connecting end part which are sequentially arranged, and a flange protruding outwards is formed at the joint of the connecting end part and the middle part; the die casting is provided with an installation hole which extends in the non-die-stripping direction and is used for installing the connecting end, an annular groove used for being connected with the flange in a clamping mode is formed in the edge of the end of the installation hole, the connecting end is fixedly installed in the installation hole, and the end face, facing the die casting, of the flange is attached to the bottom wall of the annular groove.

Description

Technical Field

[0001] The invention belongs to the technical field of die casting structure, and in particular relates to a split die casting non-mold-out direction positioning structure, an instrument panel pipe beam and a vehicle. Background Art

[0002] In an integrated die-cast product, the die-cast product body and its main locating pin in the ejection direction are integrally formed by the mold; and when the product is assembled, the main locating pin is usually not subjected to load.

[0003] However, for some one-piece die-cast products with more complex structures, the direction of the main locating pin is not in the direction of the die-casting; moreover, when the product is installed, the main locating pin needs to bear a large bending load. In order to meet this product demand, the die-casting mold needs to add a side-to-side core pulling mechanism when developing the die-casting mold, which leads to a sharp increase in the cost of the product mold.

[0004] In addition, since the main positioning pin in the existing one-piece die-cast product is a slender cantilever beam, there is usually stress concentration at the root where the slender cantilever beam is connected to the die-cast product, so it is easy to break during transportation and use. Summary of the invention

[0005] In order to solve the above-mentioned deficiencies of the prior art, the purpose of the present invention is to provide a split-type die-casting non-mold-out direction positioning structure, an instrument panel tube beam and a vehicle.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] <Option 1>

[0008] The present invention provides a split-type die-casting non-demolding direction positioning structure, which has the following characteristics: a die-casting; and a positioning pin, which is arranged along the non-demolding direction of the die-casting, wherein the positioning pin is made of an integral molding, and comprises a positioning end portion, a middle portion and a connecting end portion arranged in sequence, a flange protruding outward is formed at the connection between the connecting end portion and the middle portion, a mounting hole extending along the non-demolding direction for mounting the connecting end portion is provided on the die-casting, an annular groove for clamping the flange is formed at the end edge of the mounting hole, the connecting end portion is fixedly installed in the mounting hole, and the end face of the flange facing the die-casting is in contact with the bottom wall of the annular groove.

[0009] In the non-mold-out direction positioning structure of the split die-casting provided by the present invention, it can also have the following characteristics: wherein the connecting end and the die-casting are connected by one or more of a threaded connection, an interference fit connection, a riveted connection and a welding connection.

[0010] The split die casting non-mold-out direction positioning structure provided by the present invention may also have the following features: wherein the threaded connection method is a metric fine thread connection, a conical thread connection, a rectangular thread connection, a diamond thread connection or a corrugated thread connection.

[0011] The non-mold-out direction positioning structure of the split die casting provided by the present invention may also have the following feature: an annular groove for clamping by an installation tool is formed on the outer surface of the middle part.

[0012] The split type die casting non-mold-out direction positioning structure provided by the present invention may also have the following feature: wherein the die casting is a magnesium alloy die casting.

[0013] The non-mold-out direction positioning structure of the split die casting provided by the present invention may also have the following characteristics: wherein the positioning pin is made of a low-carbon alloy steel material that has been quenched and tempered.

[0014] The non-mold-out direction positioning structure of the split die casting provided by the present invention may also have the following feature: wherein the outer surface of the positioning pin has an anti-electrochemical reaction film.

[0015] The non-mold-out direction positioning structure of the split die casting provided by the present invention may also have the following feature: wherein the anti-electrochemical reaction film is a galvanized film.

[0016] <Option 2>

[0017] The present invention also provides an instrument panel tube beam having the following characteristics, including the non-mold-out direction positioning structure of the split die-casting part of <Scheme 1>.

[0018] <Scheme 3>

[0019] The present invention also provides a vehicle having the following characteristics, including the instrument panel tube beam of <Solution 2>.

[0020] Function and Effect of the Invention

[0021] According to the split die-casting non-demolding direction positioning structure, instrument panel tube beam and vehicle involved in the present invention, since a flange protruding outward is formed at the connection end and the middle part of the locating pin, a mounting hole extending along the non-demolding direction is provided on the die-casting, and the connecting end of the locating pin can be installed. An annular groove is formed at the end edge of the mounting hole, and the flange of the locating pin can be clamped. The connecting end is fixedly installed in the mounting hole, and the end face of the flange facing the die-casting is in contact with the bottom wall of the annular groove. Therefore, the present invention adopts a structural design in which a split die-casting and a directional pin are matched, which can well realize the positioning structure of the one-piece die-casting product in the non-demolding direction, reduce the mold development cost, and simplify the mold structure; moreover, the design of matching the flange with the annular groove for installation enhances the overall ability of the locating pin to withstand radial bending loads, thereby avoiding the problem of easy breakage during transportation and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic cross-sectional structure diagram of a split die casting directional structure in an embodiment of the present invention; and

[0023] Figure 2 It is a schematic diagram of the three-dimensional structure of the positioning pin in the embodiment of the present invention. DETAILED DESCRIPTION

[0024] The concept, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the present invention.

[0025] <Example>

[0026] Figure 1 It is a schematic cross-sectional structure diagram of the directional structure of the split die casting in an embodiment of the present invention.

[0027] like Figure 1 As shown, in this embodiment, the split-type die-casting non-mold-out direction positioning structure 10 is used for a vehicle instrument panel tube beam, and includes a die-casting 11 and a positioning pin 12.

[0028] like Figure 1 As shown, the die casting 11 is provided with a mounting hole 111 extending along its non-mold-out direction for mounting the connecting end 123 of the positioning pin 12; the die casting 11 is formed with an annular groove 112 at the end edge of the mounting hole 111 for clamping the flange 124 of the positioning pin 12. In this embodiment, the die casting 11 is an integrally die-cast magnesium alloy die casting; the mounting hole 111 and the annular groove 112 are processed by CNC (numerical control machine tool processing center).

[0029] Figure 2 It is a schematic diagram of the three-dimensional structure of the positioning pin in the embodiment of the present invention.

[0030] like Figure 1 and Figure 2 As shown, the positioning pin 12 is arranged along the non-mold-out direction of the die casting 11 and is an integrally formed part processed by CNC. The positioning pin 12 includes a positioning end portion 121, a middle portion 122 and a connecting end portion 123 arranged in sequence.

[0031] The positioning end portion 121 is a cone and is used to position the die casting 11 on the mounted component.

[0032] The middle portion 122 is a cylinder, and an annular groove 122a is formed on its outer surface near the positioning end portion 121, so as to facilitate the clamping of the installation tool during installation. In this embodiment, a flange 124 protruding outward is formed at the connection between the connection end portion 121 and the middle portion 122.

[0033] The connecting end portion 123 is used to connect the positioning pin 12 to the die casting 11, and is a cylinder with a diameter slightly smaller than the diameter of the middle portion 122. The connecting end portion 123 is fixedly installed in the mounting hole 111 of the die casting 11; at the same time, the flange 124 is embedded in the annular groove 122 and its end surface facing the die casting 11 is in contact with the bottom wall of the annular groove 122; thus, the design of the matching installation of the flange 124 and the annular groove 122 enhances the ability of the positioning pin 12 to bear bending loads and reduces the stress concentration at the root of the positioning pin 12.

[0034] In this embodiment, the connection end 123 and the die casting 11 are connected by a threaded connection method such as a metric fine pitch thread connection, a conical thread connection, a rectangular thread connection, a diamond thread connection or a corrugated thread connection, and the commonly used triangular metric fine pitch thread connection is preferred to enhance the self-locking performance between the locating pin 12 and the die casting. Of course, according to actual needs, the connection end 123 and the die casting 11 can also be connected by one or more of an interference fit connection method, a riveting connection method and a welding connection method, which has a good self-locking function.

[0035] In this embodiment, the positioning pin 12 is made of low-carbon alloy steel material that has been quenched and tempered, so that the overall strength of the positioning pin 12 is enhanced to avoid the risk of breakage due to impact during transportation and use. In order to prevent electrochemical corrosion between the positioning pin 12 and the die casting 11, the outer surface of the positioning pin 12 has an anti-electrochemical reaction film (not shown in the figure), and the anti-electrochemical reaction film is preferably a galvanized film with a thickness of 24μm or more. Of course, according to actual needs, in order to prevent electrochemical corrosion between the positioning pin 12 and the die casting 11, electroplating process, spraying process or anode protection and other measures can also be adopted.

[0036] Example Function and Effect

[0037] According to the split die-casting non-demolding direction positioning structure, instrument panel tube beam and vehicle involved in this embodiment, since a flange protruding outward is formed at the connection between the connecting end and the middle part of the locating pin, a mounting hole extending along the non-demolding direction is provided on the die-casting, and the connecting end of the locating pin can be installed. An annular groove is formed at the end edge of the mounting hole, and the flange of the locating pin can be clamped. The connecting end is fixedly installed in the mounting hole, and the end face of the flange facing the die-casting is in contact with the bottom wall of the annular groove. Therefore, this embodiment adopts a structural design in which a split die-casting and a directional pin are matched, which can well realize the positioning structure of the one-piece die-casting product in the non-demolding direction, reduce the mold development cost, and simplify the mold structure; moreover, the design of the flange and the annular groove being installed in combination enhances the overall ability of the locating pin to withstand radial bending loads, thereby avoiding the problem of easy breakage during transportation and use.

[0038] In addition, because the connection end and the die casting are connected by one or more of a threaded connection, an interference fit connection, a riveted connection, and a welding connection, the self-locking performance between the locating pin and the die casting is enhanced.

[0039] In addition, since the outer surface of the middle part is formed with an annular groove for clamping by an installation tool, it is convenient to clamp and install the positioning pin when installing it with the die casting.

[0040] In addition, because the positioning pin is made of low-carbon alloy steel material that has been quenched and tempered, the overall strength of the positioning pin is enhanced, avoiding the risk of breakage due to impact during transportation and use.

[0041] In addition, because the outer surface of the locating pin has an anti-electrochemical reaction film, which is a galvanized film, it ensures that no electrochemical corrosion occurs between the locating pin and the die casting made of different materials, thereby extending the service life of the product.

[0042] The above-mentioned embodiments are preferred examples of the present invention and are not intended to limit the protection scope of the present invention.

Claims

1. A split type die casting non-mold direction positioning structure, characterized in that: include: Die castings; as well as A positioning pin is arranged along the non-mold-out direction of the die casting, The positioning pin is integrally formed and comprises a positioning end portion, a middle portion and a connecting end portion which are arranged in sequence. A flange protruding outward is formed at the connection between the connection end and the middle portion. The die casting is provided with a mounting hole extending along the non-mold-out direction for mounting the connecting end portion. An annular groove for clamping the flange is formed at the end edge of the mounting hole. The connecting end portion is fixedly mounted in the mounting hole, and the end surface of the flange facing the die casting is in contact with the bottom wall of the annular groove.

2. The non-mold-out direction positioning structure of the split die casting according to claim 1 is characterized in that: in, The connection end portion and the die casting are connected by one or more of a threaded connection, an interference fit connection, a riveted connection and a welding connection.

3. The non-mold-out direction positioning structure of the split die casting according to claim 2 is characterized in that: in, The thread connection method is a metric fine thread connection, a tapered thread connection, a rectangular thread connection, a diamond thread connection or a corrugated thread connection.

4. The non-mold-out direction positioning structure of the split die casting according to claim 1, characterized in that: in, An annular groove for clamping by an installation tool is formed on the outer surface of the middle portion.

5. The non-mold-out direction positioning structure of the split die casting according to claim 1, characterized in that: in, The die casting is a magnesium alloy die casting.

6. The non-mold-out direction positioning structure of the split die casting according to claim 1, characterized in that: in, The positioning pin is made of low-carbon alloy steel material that has been quenched and tempered.

7. The non-mold-out direction positioning structure of the split type die casting according to claim 1, characterized in that: in, The outer surface of the positioning pin is provided with an electrochemical reaction-proof film.

8. The non-mold-out direction positioning structure of the split type die casting according to claim 7, characterized in that: in, The anti-electrochemical reaction film is a galvanized film.

9. An instrument panel tube beam, characterized in that: It comprises the non-mold-out direction positioning structure of the split die casting as claimed in any one of claims 1 to 8.

10. A vehicle, characterized in that: It comprises the instrument panel tube beam as claimed in claim 9.

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