Torque rod manufacturing method

Abstract

The present invention relates to a method for manufacturing a torque rod, and Step 1: Forming the upper plate (100) and the lower plate (200) with a mold; Step 2: Placing the upper plate (100) on the upper surface of the lower plate (200); Step 3, in which the outer rib of the lower plate (200) is folded and joined to wrap around the outer perimeter of the upper plate; It consists of, The present invention has a significant effect of reducing weight by manufacturing a torque rod from aluminum and joining it without welding, thereby limiting and absorbing torque generated in the powertrain during vehicle acceleration while simultaneously preventing the transmission of vibration and noise.

Description

Technology Field

[0001] The present invention relates to a method for manufacturing a torque rod, and more specifically, to a method for manufacturing a torque rod, which is a component for connecting a powertrain device such as a motor, transmission, or engine to a vehicle body, and which serves to limit and absorb torque generated from the powertrain during vehicle acceleration while simultaneously preventing the transmission of vibration and noise. Background Technology

[0002] Generally, according to the combined structure of a torque rod and a connecting pin disclosed in Patent Publication No. 10-2009-0074842, in the rear suspension system of a large vehicle, a torque rod is connected to the rear power transmission device and the lead spring using a connecting pin to absorb shocks or vibrations transmitted from the road surface during driving, thereby mitigating the impact.

[0003] According to the prior art disclosed in Patent Publication No. 10-2009-0074842, a coupling structure of a torque rod and a connecting pin is disclosed, wherein a ball (3) of a connecting pin (2) is coupled to a coupling hole (4) formed at both ends of a torque rod (1), a plurality of bushes (6) are seated inside a ball cage (5), and the ball (3) of the connecting pin (2) is fastened to the inside of the bushes (6); and the ball cage (5) is installed to be press-fitted and fixed to the coupling hole (4) of the torque rod (1).

[0004] According to Registered Patent Publication No. 10-0140277, which describes a torque rod bushing coupling device for a large vehicle, a torque rod (16) bushing (20) coupling device for absorbing and transmitting axle loads of a large vehicle is disclosed, wherein a step (19) is integrally formed on one side and a snap ring insertion groove (17) is formed on the other side of the inner periphery of the torque rod (16), a rubber (11) is tightly inserted into the periphery of a bushing shaft (21) coupled to the torque rod (16), and a support (13) is inserted into each side of the rubber (11) and press-fitted to the torque rod (16), and the support (13) on one side is fixed to the step (19), and a ring (15) and a snap ring (14) are inserted into the outer side of the support (13) on the other side.

[0005] However, the aforementioned conventional technologies had the disadvantage of being heavy because they manufactured the torque rod by welding rather than manufacturing it from aluminum, and they could not limit / absorb the torque generated by the powertrain during vehicle acceleration while simultaneously preventing the transmission of vibration / noise. The problem to be solved

[0006] Therefore, the present invention has been devised to solve the above-mentioned problems and aims to provide a method for manufacturing a torque rod that reduces weight by manufacturing the torque rod from aluminum and joining it without welding, thereby limiting and absorbing the torque generated in the powertrain during vehicle acceleration while simultaneously preventing the transmission of vibration and noise. means of solving the problem

[0007] The present invention relates to a method for manufacturing a torque rod, and

[0008] Step 1: Forming the upper plate (100) and the lower plate (200) with a mold;

[0009] Step 2: Placing the upper plate (100) on the upper surface of the lower plate (200);

[0010] Step 3, in which the outer rib of the lower plate (200) is folded and joined to wrap around the outer perimeter of the upper plate;

[0011] It consists of,

[0012] The lower plate (200) is placed in a lower mold, and after placing the upper plate (100) on the upper surface of the lower plate (200) placed in the lower mold, the upper mold is lowered to combine the upper and lower plates (100, 200).

[0013] In a method for manufacturing a torque rod in which the upper and lower plates (100, 200) are made of aluminum,

[0014] The upper plate (100) comprises a plate-shaped upper body (110) having first left and right holes (120, 130) of different sizes formed on the left and right sides, a ring-shaped first left flange portion (121) protruding upward from the first left hole (120) of the upper body (110), a ring-shaped first right flange portion (131) protruding upward from the first right hole (130) of the upper body (110), and an upper rib portion (140) formed between the first left hole (120) and the first right hole (130) on the upper surface of the upper body (110).

[0015] The outer perimeter of the upper body (110), excluding the first seat, right hole (120, 130), first seat, right flange portion (121, 131), and upper rib portion formed therein, is called the upper rib (111).

[0016] The first left hole (120) formed on the left side of the upper body (110) is formed with a larger diameter than the first right hole (130) formed on the right side, and the upper rib section (140) is formed with a first straight section (141) and a second straight section (142) formed below the first straight section (141), and the first and second straight sections (141, 142) are connected to each other at the middle, and the first and second straight sections (141, 142) are each connected to the first left flange section (121) and the first right flange section (131).

[0017] The lower plate (200) comprises a plate-shaped lower body (210) having second left and right holes (220, 230) of different sizes formed on the left and right sides, a ring-shaped second left flange portion (221) protruding downward from the second left hole (220) of the lower body (210), a ring-shaped second right flange portion (231) protruding downward from the second right hole (230) of the lower body (210), and a lower rib portion (240) formed between the second left hole (220) and the second right hole (230) on the lower surface of the lower body (210).

[0018] The outer perimeter of the lower body (210), excluding the portion where the second seat, right hole (220, 230), second seat, right flange portion (221, 231), and lower rib portion (240) are formed, is called the lower rib (211).

[0019] A fixing rib (212) is formed extending from the upper and lower outer sides of the lower rib (211), and the fixing rib (212) is folded 90 degrees upward from the lower rib (211) by a separate press, and the second left hole (220) formed on the left side of the lower body (210) is formed with a larger diameter than the second right hole (230) formed on the right side, and the lower rib portion (240) is connected to the third straight section (241) and the fourth straight section (242) formed below the third straight section (241) at the middle part, and the third and fourth straight sections (241, 242) are connected to the second left flange portion (221) and the second right flange portion (231), respectively, and the outer side of the lower body (210) of the lower plate (200). The perimeter is formed to be larger than the outer edge of the upper body (110) of the upper plate (100), and

[0020] The above mold (300) is composed of an upper mold (310) and a lower mold (320), and the upper mold (310) has an upper mold body (311), and a first upper groove (312) is formed at the center of the lower surface of the upper mold body (311) to correspond to the shape of the upper plate (100), and a second upper groove (313) is formed in a stepped manner in the first upper groove (312), and the second upper groove (313) is formed in a shape corresponding to the upper rib (111) of the upper body (110), and one side of the second upper groove (313) is connected to the first upper groove (312), the upper surface (313-1) is formed convexly upward, and the other side is formed as a rounded portion (313-2).

[0021] The lower mold (320) comprises a lower mold body (321), and a first lower groove (322) is formed at the center of the upper surface of the lower mold body (321) in a manner corresponding to the shape of the lower plate (200). A second lower groove (323) is formed in the first lower groove (322) in a stepped manner, and the second lower groove (323) is formed in a manner corresponding to the lower rib (211) of the lower body (210). One side of the second lower groove (323) is connected to the first lower groove (322), the lower surface (323-1) is horizontal, and the other side has a rounded portion (323-2).

[0022] The method of combining the upper and lower plates (100, 200) using the above mold (300) is to place the lower plate (200) in the lower mold (320), place the second seat, right flange portion (221, 231), and lower rib portion (240) formed on the lower body (210) of the lower plate (200) in the first lower groove (322) of the lower mold (320), place the lower rib (211) in the second lower groove (323), place the upper plate (100) so as to contact the upper surface of the lower plate (200), and move the upper mold (310) downward.

[0023] When the upper mold (310) moves downward, the fixing rib (212) of the lower plate (200) comes into contact with the second upper groove (313) of the upper mold (310), and as the upper mold (310) moves downward, the fixing rib (212) folds along the shape of the second upper groove (313), so that the lower rib (211) of the lower plate (200) and the fixing rib (212) wrap around the upper rib (111) of the upper plate (100) and are fixedly coupled. Effects of the invention

[0024] Therefore, the present invention has a significant effect of reducing weight by manufacturing a torque rod from aluminum and joining it without welding, thereby limiting and absorbing torque generated in the powertrain during vehicle acceleration while simultaneously preventing the transmission of vibration and noise. Brief explanation of the drawing

[0025] FIG. 1 is a planar perspective view of the upper plate of the torque rod of the present invention. FIG. 2 is a bottom perspective view of the upper plate of the torque rod of the present invention. FIG. 3 is a cross-sectional view of the torque rod of the present invention. FIG. 4 is a detailed view of the upper plate of the torque rod of the present invention. FIG. 5 is a detailed view of the torque rod lower plate of the present invention. FIG. 6 is a detailed view showing the state in which the upper and lower plates of the torque rod of the present invention are combined. FIG. 7 is a cross-sectional view of the torque rod mold of the present invention. FIG. 8 is a detailed view of the torque rod mold of the present invention. Specific details for implementing the invention

[0026] The present invention relates to a method for manufacturing a torque rod, and

[0027] Step 1: Forming the upper plate (100) and the lower plate (200) with a mold;

[0028] Step 2: Placing the upper plate (100) on the upper surface of the lower plate (200);

[0029] Step 3, in which the outer rib of the lower plate (200) is folded and joined to wrap around the outer perimeter of the upper plate;

[0030] It is characterized by being composed of.

[0031] In addition, the lower plate (200) is placed in a lower mold, and after placing the upper plate (100) on the upper surface of the lower plate (200) placed in the lower mold, the upper mold is lowered to combine the upper and lower plates (100, 200).

[0032] In addition, the upper and lower plates (100, 200) are characterized by being made of aluminum.

[0034] The present invention will be described in detail below with reference to the attached drawings.

[0035] FIG. 1 is a planar perspective view of the upper plate of the torque rod of the present invention, FIG. 2 is a bottom perspective view of the upper plate of the torque rod of the present invention, FIG. 3 is a cross-sectional view of the torque rod of the present invention, FIG. 4 is a detailed view of the upper plate of the torque rod of the present invention, FIG. 5 is a detailed view of the lower plate of the torque rod of the present invention, FIG. 6 is a detailed view showing the state in which the upper and lower plates of the torque rod of the present invention are combined, FIG. 7 is a cross-sectional view of the torque rod mold of the present invention, and FIG. 8 is a detailed view of the torque rod mold of the present invention.

[0037] The present invention relates to a method for manufacturing a torque rod, wherein an upper plate (100) and a lower plate (200) are formed using a mold to produce a semi-finished product.

[0038] The upper and lower plates (100, 200) are made of aluminum.

[0039] The upper plate (100) comprises a plate-shaped upper body (110) having first left and right holes (120, 130) of different sizes formed on the left and right sides, a ring-shaped first left flange portion (121) protruding upward from the first left hole (120) of the upper body (110), a ring-shaped first right flange portion (131) protruding upward from the first right hole (130) of the upper body (110), and an upper rib portion (140) formed between the first left hole and the first right hole on the upper surface of the upper body.

[0040] The outer perimeter of the upper body, excluding the first seat, right hole, first seat, right flange portion, and upper rib portion formed therein, is called the upper rib (111).

[0041] The first left hole (120) formed on the left side of the upper body is formed with a larger diameter than the first right hole (130) formed on the right side.

[0042] The upper steel member (140) is a first straight section (141), a second straight section (142) formed at the bottom of the first straight section (141), and the first and second straight sections (141, 142) are connected to each other at the middle, and the first and second straight sections are each connected to a first left flange section and a first right flange section.

[0044] The lower plate (200) comprises a plate-shaped lower body (210) having second left and right holes (220, 230) of different sizes formed on the left and right sides, a ring-shaped second left flange portion (221) protruding downward from the second left hole (220) of the lower body (210), a ring-shaped second right flange portion (231) protruding downward from the second right hole (230) of the lower body (210), and a lower rib portion (240) formed between the second left hole and the second right hole on the lower surface of the lower body.

[0045] The outer perimeter of the lower body, excluding the portion where the second seat, right hole, second seat, right flange, and lower rib portion are formed, is called the lower rib (211).

[0046] A fixed rib (212) is formed extending from the upper and lower outer sides of the lower rib, and the fixed rib is folded 90 degrees upward from the lower rib by a separate press.

[0047] The second left hole (220) formed on the left side of the lower body is formed with a larger diameter than the second right hole (230) formed on the right side.

[0048] The lower reinforcing member (240) is connected to the third straight member (241), and the fourth straight member (242) formed below the third straight member (241) is connected to the middle of each other, and the third and fourth straight members are each connected to the second left flange and the second right flange.

[0049] The outer perimeter of the lower body of the above lower plate is formed to be larger than the outer perimeter of the upper body of the upper plate.

[0051] Then, the upper plate (100) is placed on the upper surface of the lower plate (200).

[0052] And the outer lower rib of the lower plate (200) is folded and joined so as to wrap the outer upper rib of the upper plate with the mold (300).

[0053] That is, the lower plate (200) is placed in the lower mold, and after placing the upper plate on the upper surface of the lower plate placed in the lower mold, the upper mold comes down to combine the upper and lower plates.

[0055] The above mold (300) consists of an upper mold (310) and a lower mold (320).

[0056] The upper mold (310) comprises an upper mold body (311), and a first upper groove (312) is formed at the center of the lower surface of the upper mold body (311) in a manner corresponding to the shape of an upper plate, and a second upper groove (313) is formed in the first upper groove (312) in a stepped manner.

[0057] The second upper groove (313) is formed in a shape corresponding to the upper rib of the upper body.

[0058] At this time, one side of the second upper groove (313) is connected to the first upper groove, the upper surface (313-1) is formed convexly upward, and the other side is formed as a rounded portion (313-2).

[0060] The lower mold (320) comprises a lower mold body (321), and a first lower groove (322) is formed at the center of the upper surface of the lower mold body (321) in a manner corresponding to the shape of a lower plate, and a second lower groove (323) is formed in the first lower groove in a stepped manner.

[0061] The second lower groove (323) is formed as a phenomenon corresponding to the lower rib of the lower body.

[0062] At this time, one side of the second lower groove is connected to the first lower groove, the lower surface (323-1) is horizontal, and the other side has a rounded portion (323-2) formed.

[0064] In addition, the end portion of the second upper groove (313) communicating with the first upper groove (312) is formed with a finishing portion (313-3) protruding downward.

[0065] The above finishing portion (313-3) is formed such that the slope becomes lower as it goes from the upper surface (313-1) of the second upper groove toward the finishing portion, and a vertical portion (313-3a) protruding downward is formed, and a curved portion (313-3b) protruding upward in an arc shape is formed from the vertical portion (313-3a), and the end portion of the curved portion (313-b) is connected to the first upper groove (312).

[0066] By forming the above finishing portion (313-3), when the fixing rib (212) of the lower rib (211) is folded 90 degrees and wraps around the upper rib (111), there is no gap between the fixing rib (212) and the upper rib (111).

[0067] Accordingly, due to the finishing portion (313-3) formed at the end of the second upper groove (313), the fixing rib (212) of the lower rib (211) is folded to wrap around the upper rib (111), and thus the fixing rib (212) and the upper rib (111) are tightly joined without gaps, thereby improving fastening stability.

[0068] In addition, as the contact area between the fixed rib (212) and the upper rib (111) increases, play or shaking after assembly is prevented, thereby increasing the rigidity of the entire joint structure. Furthermore, by dispersing the stress generated during the folding process of the fixed rib (212) due to the curved shape of the finishing part (313-3), stress is prevented from concentrating in a specific area, thereby suppressing breakage and deformation even under repeated loads or long-term use, and thus improving durability.

[0070] Meanwhile, the method of joining the upper and lower plates using a mold is explained as follows.

[0071] First, the lower plate is placed in the lower mold, and the second seat, right flange portion, and lower reinforcing portion formed on the lower body of the lower plate are placed in the first lower groove of the lower mold.

[0072] And a lower rib is placed in the second lower groove.

[0073] Then, the upper plate is placed so that it contacts the upper surface of the lower plate.

[0074] Then, the upper mold is moved to the lower position.

[0075] At this time, when the upper mold moves downward, the fixing rib of the lower plate comes into contact with the second upper groove of the upper mold, and as the upper mold moves downward, the fixing rib folds along the shape of the second upper groove, so that the lower rib of the lower plate and the fixing rib wrap around the upper rib of the upper plate, thereby forming a fixed connection.

[0077] Therefore, the present invention has a significant effect of reducing weight by manufacturing a torque rod from aluminum and joining it without welding, thereby limiting and absorbing torque generated in the powertrain during vehicle acceleration while simultaneously preventing the transmission of vibration and noise. Explanation of the symbols

[0079] 100 : Top plate 110 : Upper body 111 : Upper rib 120 : 1st left hole 121 : 1st left flange section 130 : 1st right hole 131 : 1st right flange section 140: Upper rib section 141: First straight line section 142 : 2nd straight line section 200 : Bottom plate 210 : Lower body 211 : Lower rib 212 : Fixed rib 220 : 2nd left hole 221 : 2nd left flange section 230 : Second right hole 231 : Second right flange section 240: Lower rib section 241: Third straight line section 242 : 4th straight line section 300 : Mold 310 : Upper mold 311 : Upper mold body 312 : 1st upper groove 313 : 2nd upper groove 313-1 : Top surface 320 : Lower mold 321 : Lower mold body 322 : 1st lower groove 323 : 2nd lower groove 323-1 : Under 313-2, 323-2 : Round part 313-3 : Finishing section 313-3a Vertical section 313-3b : Curved part

Claims

Claim 1 A method for manufacturing a torque rod comprises: a first step of forming an upper plate (100) and a lower plate (200) using a mold; a second step of placing the upper plate (100) on the upper surface of the lower plate (200); and a third step of folding and joining the outer ribs of the lower plate (200) so as to wrap around the outer perimeter of the upper plate; wherein the lower plate (200) is placed in a lower mold, and after placing the upper plate (100) on the upper surface of the lower plate (200) placed in the lower mold, the upper mold is lowered to join the upper and lower plates (100, 200); and wherein the upper and lower plates (100, 200) are made of aluminum. In this method, the upper plate (100) is a plate-shaped plate having first left and right holes (120, 130) of different sizes formed on the left and right sides. The upper body (110), a ring-shaped first left flange portion (121) protruding upward from the first left hole (120) of the upper body (110), a ring-shaped first right flange portion (131) protruding upward from the first right hole (130) of the upper body (110), and an upper rib portion (140) formed between the first left hole (120) and the first right hole (130) on the upper surface of the upper body (110), and the outer circumference excluding the first left and right holes (120, 130), the first left and right flange portions (121, 131), and the upper rib portion formed thereon of the upper body (110) is called the upper rib (111), and the first left hole (120) formed on the left side of the upper body (110) is formed on the right side The upper reinforcing member (140) is formed with a diameter larger than that of the first right hole (130), and is composed of a first straight section (141) and a second straight section (142) formed below the first straight section (141), wherein the upper reinforcing member (140) has the first and second straight sections (141, 142) connected to each other at the middle, and the first and second straight sections (141, 142) are connected to the first left flange section (121) and the first right flange section (131), respectively, and the lower plate (200) has second left and right holes (220) of different sizes on the left and right sides,The lower body (210) in the shape of a plate, formed with 230), a ring-shaped second left flange portion (221) protruding downward from the second left hole (220) of the lower body (210), a ring-shaped second right flange portion (231) protruding downward from the second right hole (230) of the lower body (210), and a lower rib portion (240) formed between the second left hole (220) and the second right hole (230) on the lower surface of the lower body (210), and the outer perimeter excluding the portion where the second left and right holes (220, 230), the second left and right flange portions (221, 231), and the lower rib portion (240) of the lower body (210) are formed is called the lower rib (211), and the lower rib (211) A fixed rib (212) is formed extending from the upper and lower outer sides of the lower rib (211), and the fixed rib (212) is folded 90 degrees upward from the lower rib (211) by a separate press, and the second left hole (220) formed on the left side of the lower body (210) is formed with a larger diameter than the second right hole (230) formed on the right side, and the lower rib section (240) is composed of a third straight section (241) and a fourth straight section (242) formed below the third straight section (241), wherein the third and fourth straight sections (241, 242) of the lower rib section (240) are connected to each other at the middle, and the third and fourth straight sections (241, 242) are respectively connected to the second left flange section (221) and the second right flange section (231). The lower body (210) of the lower plate (200) is connected, and the outer circumference of the lower body (210) of the upper plate (100) is formed to be larger than the outer circumference of the upper body (110) of the upper plate (100). The mold (300) is composed of an upper mold (310) and a lower mold (320). The upper mold (310) has an upper mold body (311), and a first upper groove (312) is formed at the center of the lower surface of the upper mold body (311) to correspond to the shape of the upper plate (100). A second upper groove (313) is formed in the first upper groove (312) with a step.The second upper groove (313) is formed in a shape corresponding to the upper rib (111) of the upper body (110), and one side of the second upper groove (313) is connected to the first upper groove (312), the upper surface (313-1) is formed convexly upward, and the other side is formed as a rounded portion (313-2). The lower mold (320) has a lower mold body (321), and a first lower groove (322) is formed at the center of the upper surface of the lower mold body (321) in a shape corresponding to the shape of the lower plate (200). A second lower groove (323) is formed in the first lower groove (322) with a step, and the second lower groove (323) is formed in a shape corresponding to the lower rib (211) of the lower body (210). The second lower groove (323) One side is connected to the first lower groove (322), the lower surface (323-1) is horizontal, and the other side has a rounded portion (323-2) formed thereon, and the end portion of the second upper groove (313) connected to the first upper groove (312) has a finishing portion (313-3) protruding downwardly formed thereon, and the finishing portion (313-3) is formed such that the slope becomes lower as it goes from the upper surface (313-1) of the second upper groove (313) to the finishing portion (313-3), and then a vertical portion (313-3a) protruding downwardly is formed, and a curved portion (313-3b) protruding upwardly in an arc shape is formed from the vertical portion (313-3a), and the end portion of the curved portion (313-b) is connected to the first upper groove (312), and by forming the finishing portion (313-3), the When the fixed rib (212) of the lower rib (211) is folded 90 degrees to wrap around the upper rib (111), the fixed rib (212) and the upper rib (111) come into contact without any gaps between them, and due to the finishing portion (313-3) formed at the end of the second upper groove (313), the fixed rib (212) and the upper rib (111) are tightly joined without any gaps during the process in which the fixed rib (212) of the lower rib (211) is folded to wrap around the upper rib (111), thereby improving fastening stability.As the contact area between the fixed rib (212) and the upper rib (111) increases, play or shaking after assembly is prevented, thereby increasing the rigidity of the entire combined structure, and the stress generated during the folding process of the fixed rib (212) is dispersed by the curved shape of the finishing part (313-3), thereby preventing stress from concentrating in a specific area, and the method of combining the upper and lower plates (100, 200) using the mold (300) is to place the lower plate (200) in the lower mold (320), and the second seat, right flange part (221, 231), and lower reinforcing part (240) formed on the lower body (210) of the lower plate (200) are placed in the first lower groove (322) of the lower mold (320), and the lower rib (211) is placed in the second lower groove (323), and the A method for manufacturing a torque rod characterized by placing an upper plate (100) so as to contact the upper surface of a lower plate (200) and moving the upper mold (310) downward, wherein when the upper mold (310) moves downward, the fixing rib (212) of the lower plate (200) comes into contact with the second upper groove (313) of the upper mold (310), and as the upper mold (310) moves downward, the fixing rib (212) folds along the shape of the second upper groove (313), so that the lower rib (211) of the lower plate (200) and the fixing rib (212) wrap around the upper rib (111) of the upper plate (100) and are fixedly coupled.

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