Potable ultrasonic welding

Abstract

An invention regarding a portable ultrasonic welding machine is disclosed. The disclosed portable ultrasonic welding machine is characterized by comprising: a first mounting member provided in a body and mounting a first wire harness so that a first conductor, which is coated with a first wire harness, is positioned at a set position for welding; a second mounting member provided in a body corresponding to the first mounting member and mounting a second wire harness so that a second conductor, which is coated with a second wire harness, is positioned close to a corresponding first conductor for welding; an ultrasonic oscillator provided in a body and generating ultrasonic waves by external operation; and a welding tip provided in a body and simultaneously in contact with a corresponding first conductor and a second conductor, generating frictional heat in the first conductor and the second conductor through mechanical vibration converted from an electric frequency from the ultrasonic oscillator to weld them.

Description

Technology Field

[0001] The present invention relates to a portable ultrasonic welding machine, and more specifically, to a portable ultrasonic welding machine that aims to safely and securely secure the rework of joining (welding) between conductors caused by a wire breakage problem in a wire harness inside a finished vehicle through a portable ultrasonic welding machine for wires. Background Technology

[0002] Ultrasonic waves refer to sound waves that are higher than the audible frequency range and are approximately 15,000 to 20,000 Hz or lower. They are widely used in fish detection, ultrasonic inspection or thickness measurement, surgical ultrasonic diagnosis, and industrial cleaning. Ultrasonic spot welding using such ultrasound is a welding process in which the workpiece is placed between a base plate and a welding tip, heated, and subjected to ultrasonic vibrations. This process involves the destruction and removal of the oxide film on the contact surface of the workpiece by the ultrasonic vibrations, allowing the clean metal surfaces to come into contact and close enough for interatomic attraction to occur, thereby completing the welding.

[0003] This type of ultrasonic welding machine is a welding method widely used in places where very precise and strong welding is required.

[0004] Related technology is disclosed in Korean Registered Patent Publication No. 10-1012146 (Title of invention: Ultrasonic welding machine).

[0005] The technical configuration described above is provided as background technology to aid in understanding the present invention and does not constitute prior art widely known in the technical field to which the present invention belongs. The problem to be solved

[0006] Wire harnesses mounted on vehicles are located inside various electrical components and trims of the vehicle that are not exposed to the driver, and due to a lack of workspace and interference with other parts, there is a problem in that the welding workability of the broken wire area is significantly reduced using an ultrasonic welding machine.

[0007] In addition, conventional ultrasonic welding machines have the problem of being difficult to carry due to their relatively large volume.

[0008] Therefore, there is a need to improve this.

[0009] The present invention was devised to improve the above-mentioned problems, and aims to provide a portable ultrasonic welding machine that safely and securely ensures the rework of joining (welding) between conductors caused by wire breakage in the wire harness inside a finished vehicle. means of solving the problem

[0010] A portable ultrasonic welding machine according to the present invention comprises: a body; a first mounting member provided on the body for mounting a first wire harness so that a first conductor, which is coated and welded, is positioned at a set position; a second mounting member provided on the body corresponding to the first mounting member for mounting a second wire harness so that a second conductor, which is coated and welded, is positioned close to the corresponding first conductor; an ultrasonic oscillator provided on the body for generating ultrasonic waves by external operation; and a welding tip provided on the body for welding by generating frictional heat between the first conductor and the second conductor through mechanical vibration converted from an electric frequency from the ultrasonic oscillator while simultaneously contacting the corresponding first conductor and the second conductor.

[0011] The portable ultrasonic welding device according to the present invention includes: a handle provided on the body to provide convenience of use.

[0012] The first mounting member comprises: a first leg extending from the body; a first alignment groove formed in the first leg to accommodate and align the alignment position of the first wire harness in the first leg; and a first pad extending from the first leg and supporting the first conductor located on the welding tip side.

[0013] The second mounting member comprises: a second leg extending from the body; a second alignment groove formed in the second leg to accommodate and align the alignment position of the second wire harness on the second leg; and a second pad extending from the second leg and supporting the second conductor located on the welding tip side. Effects of the invention

[0014] As explained above, unlike conventional technology, the portable ultrasonic welding device according to the present invention can safely and securely ensure the rework of joining (welding) between conductors caused by wire breakage problems in the wire harness inside a finished vehicle through a portable ultrasonic welding device for wires. Brief explanation of the drawing

[0015] FIG. 1 is a perspective view of a portable ultrasonic welding device according to one embodiment of the present invention. FIG. 2 is a front view of a portable ultrasonic welding device according to one embodiment of the present invention. FIG. 3 is a side view of a portable ultrasonic welding device according to one embodiment of the present invention. FIG. 4 is a bottom perspective view of a portable ultrasonic welding device according to one embodiment of the present invention. Specific details for implementing the invention

[0016] Hereinafter, an embodiment of a portable ultrasonic welding device according to the present invention will be described with reference to the attached drawings. In this process, the thickness of lines or the size of components shown in the drawings may be exaggerated for clarity and convenience of explanation. Furthermore, the terms described below are defined considering their functions in the present invention, and these may vary depending on the intention or convention of the user or operator. Therefore, the definitions of these terms should be based on the content throughout this specification.

[0017] FIG. 1 is a perspective view of a portable ultrasonic welding device according to one embodiment of the present invention, and FIG. 2 is a front view of a portable ultrasonic welding device according to one embodiment of the present invention.

[0018] FIG. 3 is a side view of a portable ultrasonic welding device according to one embodiment of the present invention, and FIG. 4 is a bottom perspective view of a portable ultrasonic welding device according to one embodiment of the present invention.

[0019] Referring to FIGS. 1 to 4, a portable ultrasonic welding device (100) according to one embodiment of the present invention includes a body (110), a first mounting member (120), a second mounting member (130), an ultrasonic oscillator (140), a welding tip (150), and a handle (160).

[0020] The body (110) forms the outer shape of the portable ultrasonic welding machine (100) according to the present invention and can be modified into various shapes. In addition, the body (110) is made of an insulating material.

[0021] And, the first mounting member (120) is provided in the body (110) and serves to mount the first wire harness (10) so that the first conductor (12) for welding the first wire harness (10) while it is covered is positioned at a set position.

[0022] In addition, the second mounting member (130) is provided in the body (110) to correspond to the first mounting member (120) and serves to mount the second wire harness (20) so that the second conductor (22), which is coated and fused with the second wire harness (20), is positioned close to the corresponding first conductor (12).

[0023] With the first wire harness (10) mounted on the first mounting member (120) and the second wire harness (20) mounted on the second mounting member (130), the first conductor (12) and the second conductor (22) are positioned close to each other.

[0024] In addition, the ultrasonic oscillation unit (140) is provided in the body (110), particularly on the inside of the body (110), and generates (oscillates) ultrasonic waves by external operation.

[0025] In other words, the ultrasonic oscillation unit (140) includes a vibrator (142) as a source for generating ultrasonic waves. Thus, the ultrasonic oscillation unit (140) operates on the principle that when an alternating current voltage is applied to both sides of the vibrator (142), expansion and contraction occur according to the polarity of the current to generate ultrasonic waves, and is a device that converts an electrical signal of AC 200~240V provided from the outside into an electrical signal of 20kHz or higher.

[0026] And, the welding tip (150) is provided in the body (110) and simultaneously contacts the corresponding first conductor (12) and second conductor (22), and plays the role of welding by generating frictional heat on the first conductor (12) and second conductor (22) through mechanical vibration converted from an electric frequency from the ultrasonic oscillator (140).

[0027] At this time, the vibrator (142) converts the electric frequency of the electric signal provided from the ultrasonic oscillation unit (140) into mechanical vibration, and in the present invention, a piezoelectric type, which is the most efficient type of vibrator (142), can be applied.

[0028] And, when the mechanical vibration converted by the vibrator (142) is amplified, the fusion tip (150) locally melts the overlapping connection portion of the first conductor (12) and the second conductor (22) to be fused using the amplified mechanical vibration, so that the first conductor (12) and the second conductor (22) to be fused are joined together.

[0029] At this time, the fusion tip (150) includes a heating part (152) or connects the heating part (152).

[0030] The heating unit (152) is for converting the electric frequency of the ultrasound provided from the ultrasonic oscillation unit (140) into thermal energy.

[0031] Due to the heating part (152), the mutual bonding portion of the first conductor (12) and the second conductor (22) that the welding tip (150) contacts is melted, thereby increasing the welding efficiency.

[0032] In addition, a handle (160) is provided on the body (110) to provide convenience of use. At this time, the handle (160) can be transformed into various shapes.

[0033] Meanwhile, the first mounting member (120) may include a first leg (122), a first alignment groove (124), and a first pad (126).

[0034] The first leg (122) is formed to extend downward from one side of the body (110), particularly from the lower edge. At this time, the first leg (122) can be integrally or detachably coupled to the body (110) and can be formed in various shapes.

[0035] And, the first alignment groove (124) is formed in the first leg (122) to receive and align the alignment position of the first wire harness (10) in the first leg (122).

[0036] For example, the first alignment groove (124) is formed by being recessed on the side of the first leg (122) to guide the entry of the circumferential surface of the first wire harness (10). At this time, the first alignment groove (124) can be formed in various ways to align and fix the entered first wire harness (10).

[0037] In addition, the first pad (126) extends from the first leg (122) and serves to support the first conductor (12) located on the side of the first wire harness (10) and the fusion tip (150). This is to increase fusion efficiency by preventing the first conductor (12) from bending when the fusion tip (150) pressurizes and fuses the first conductor (12).

[0038] Likewise, the second mounting member (130) may include a second lag, a second alignment groove (134), and a second pad (136).

[0039] The second leg (132) is formed to extend downward from the other side of the body (110), particularly from the lower edge. At this time, the second leg (132) can be integrally or detachably coupled to the body (110) and can be formed in various shapes.

[0040] And, the second alignment groove (134) is formed in the second leg (132) to accommodate and align the alignment position of the second wire harness (20) in the second leg (132).

[0041] For example, the second alignment groove (134) is formed by being recessed on the side of the second leg (132) to guide the entry of the circumferential surface of the second wire harness (20). At this time, the second alignment groove (134) can be formed in various ways to align and fix the entered second wire harness (20).

[0042] In addition, the second pad (136) extends from the second leg (132) and serves to support the second conductor (22) located on the side of the second wire harness (20) and the fusion tip (150). This is to increase the fusion efficiency by preventing the second conductor (22) from bending when the fusion tip (150) pressurizes and fuses the second conductor (22).

[0043] In particular, the first pad (126) and the second pad (136) may be connected or formed as a single unit.

[0044] Of course, the first pad (126) and the second pad (136) can be transformed into various shapes.

[0045] Accordingly, the portable ultrasonic welding device (100) according to the present invention is relatively small and portable, and can weld the circuit disconnection of the first conductor (12) of the first wire harness (10) and the second conductor (22) of the second wire harness (20), thereby preventing the reduction in workability and the failure to ensure the reliability of the product's welding due to working with conventional hand tools or soldering work in a confined space.

[0046] Although the present invention has been described with reference to the embodiments illustrated in the drawings, this is merely illustrative, and those skilled in the art will understand that various modifications and equivalent alternative embodiments are possible therefrom. Accordingly, the true technical scope of protection of the present invention should be determined by the claims below. Explanation of the symbols

[0047] 10: 1st wire harness 12: 1st conductor 20: Second wire harness 22: Second conductor 100: Portable ultrasonic welder 110: Body 120: First mounting member 122: First leg 124: 1st alignment groove 126: 1st pad 130: Second mounting member 132: Second lag 134: 2nd alignment groove 136: 2nd pad 140: Ultrasonic oscillator 142: Vibrator 150: Fusion tip 152: Heating part 160: Handle

Claims

Claim 1 A body; a first mounting member provided on the body and mounting the first wire harness so that a first conductor, for welding the first wire harness while it is coated, is positioned at a set position; a second mounting member provided on the body corresponding to the first mounting member and mounting the second wire harness so that a second conductor, for welding the second wire harness while it is coated, is positioned close to the corresponding first conductor; and an ultrasonic oscillator provided on the body and generating ultrasonic waves by external operation; A portable ultrasonic welding machine comprising a welding tip provided on the body and simultaneously in contact with the corresponding first conductor and second conductor, and generating frictional heat on the first conductor and the second conductor through mechanical vibration converted from an electric frequency from the ultrasonic oscillator to weld them, wherein the first mounting member comprises: a first leg extending from the body; a first alignment groove formed on the first leg to accommodate and align the alignment position of the first wire harness on the first leg; and a first pad extending from the first leg and supporting the first conductor located on the welding tip side. Claim 2 A portable ultrasonic welding machine according to claim 1, characterized by including a handle provided on the body to provide convenience of use. Claim 3 delete Claim 4 A portable ultrasonic welder according to claim 1 or 2, wherein the second mounting member comprises: a second leg extending from the body; a second alignment groove formed in the second leg to accommodate and align the alignment position of the second wire harness on the second leg; and a second pad extending from the second leg and supporting the second conductor located on the welding tip side.

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