A handheld ultrasonic cutter head fixing device

Abstract

This utility model relates to the field of ultrasonic cutting knife technology and discloses a handheld ultrasonic cutting knife head fixing device, including a handheld shell, an ultrasonic transducer, a flange blade, and a nut. The front extension rod of the ultrasonic transducer is an amplitude transformer, the end of which extends out of the handheld shell and is threaded. The flange blade includes a blade and a flange, the flange being sized and matched to the end of the amplitude transformer. The end of the nut has an end hole, the diameter of which is smaller than the diameter of the nut's inner hole. The outer periphery of the end hole is a radial extension, and the blade extends out of the end hole. During the tightening of the nut, the radial extension presses the flange against the end face of the amplitude transformer. The nut is located outside the handheld shell. This utility model provides a handheld ultrasonic cutting knife head fixing device that solves the problem of excessive friction and wear caused by existing chuck-mounted blades.

Description

Technical Field

[0001] This utility model relates to the field of ultrasonic cutting knife technology, specifically to a handheld ultrasonic cutting knife head fixing device. Background Technology

[0002] Existing ultrasonic cutting tools often lack quick-change blades, or while detachable designs exist (such as the Chinese Utility Model Patent Publication No. CN104254431A, titled "Ultrasonic Tool"), the chuck with slits is prone to severe friction and wear during actual ultrasonic applications, necessitating replacement and placing an economic burden on users. Furthermore, the numerous components and the relative friction under high-frequency vibration can cause significant heat generation, posing a risk of burns. Solutions where side screws directly hold the blade in place risk shattering the ceramic blade, limiting the material requirements for the blade. Utility Model Content

[0003] The purpose of this invention is to provide a handheld ultrasonic cutter head fixing device to solve at least one of the aforementioned problems in the prior art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A handheld ultrasonic cutter head fixing device includes a handheld housing, an ultrasonic transducer, a flange cutter, and a nut. The front extension rod of the ultrasonic transducer is an amplitude transformer, the end of which extends out of the handheld housing and is threaded. The flange cutter includes a blade and a flange, the flange being sized and matched to the end of the amplitude transformer. The end of the nut has an end hole, the diameter of which is smaller than the diameter of the nut's inner hole. The outer periphery of the end hole is a radial extension, the blade extending out of the end hole. During the tightening of the nut, the radial extension presses the flange against the end face of the amplitude transformer. The nut is located outside the handheld housing.

[0006] In this technical solution, the end of the amplitude transformer is threaded. The blade tail is pressed against the head end face of the amplitude transformer, and the blade can be directly fastened to the amplitude transformer by tightening the nut. This eliminates intermediate connecting parts, reduces high-frequency vibration friction and heat generation, resulting in higher working efficiency and easier blade replacement. The nut and amplitude transformer are pre-fixed as a single unit, preventing easy detachment and ensuring a good tightening effect. Because the ultrasonic cutting blade vibrates back and forth along the axial direction, each component in this solution experiences axial action and reaction forces, eliminating relative friction. This reduces the number of parts, increases lifespan, and reduces heat generation. Simultaneously, the thickened and strengthened blade tail allows for the application of ceramic blades, greatly improving the blade's sharpness and durability.

[0007] Furthermore, in order to facilitate the installation of the nut and ensure that the nut is flush with the luffing rod, the end of the luffing rod is provided with a narrow neck, the thread is provided on the narrow neck, and the tail of the narrow neck forms a step.

[0008] Furthermore, in order to improve the fit between the flange and the inner cavity of the nut, the front cavity inside the nut is a flange receiving cavity, and the rear cavity wall inside the nut is threadedly connected to the end of the amplitude transformer.

[0009] Furthermore, in order to better secure the blade, the inner wall of the flange receiving cavity abuts against the outer peripheral wall of the flange.

[0010] Furthermore, to facilitate the installation of the ultrasonic transducer, the ultrasonic transducer is provided with a connecting flange, which is fixed inside the handheld housing.

[0011] The beneficial effects of this utility model are as follows: In this technical solution, the end of the amplitude transformer is threaded, and the tail of the blade abuts against the head end face of the amplitude transformer. By tightening the nut, the blade and amplitude transformer can be directly fastened together, eliminating the need for intermediate parts, reducing high-frequency vibration friction, reducing heat generation, improving working efficiency, and making blade replacement more convenient. The nut and amplitude transformer are pre-fixed as one unit, making it less likely to fall off and ensuring a good fastening effect. Because the ultrasonic cutting blade vibrates back and forth along the axial direction, each component in this solution is subjected to action and reaction forces in the axial direction, with no relative friction. This reduces the number of parts, increases lifespan, and reduces heat generation. At the same time, the thickened and strengthened tail of the blade allows for the application of ceramic blades, greatly improving the sharpness and durability of the blade. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0014] Figure 3 This is a side view of the exploded structure of this utility model;

[0015] Figure 4 This is a cross-sectional view of the end of the amplitude transformer in this utility model;

[0016] Figure 5 This is a structural diagram of the present invention in use.

[0017] In the figure: 1. Ultrasonic transducer; 2. Nut; 3. Amplifier rod; 4. Thread; 5. Blade; 6. Flange; 7. End hole; 8. Radial extension; 9. Neck; 10. Step; 11. Flange receiving cavity; 12. Handheld housing; 13. Connecting flange. Detailed Implementation

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the present utility model will be briefly introduced below in conjunction with the accompanying drawings and descriptions of the embodiments or the prior art. Obviously, the following description of the structure of the accompanying drawings is only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. It should be noted that the description of these embodiments is used to help understand this utility model, but does not constitute a limitation on this utility model.

[0019] Example 1:

[0020] like Figures 1-5 As shown, this embodiment provides a handheld ultrasonic cutter head fixing device, including a handheld housing 12, an ultrasonic transducer 1, a flange cutter, and a nut 2. The front extension rod of the ultrasonic transducer 1 is an amplitude transformer 3, the end of which extends out of the handheld housing 12. The end of the amplitude transformer 3 is provided with a thread 4. The flange cutter includes a blade 5 and a flange 6. The flange 6 matches the shape and size of the end of the amplitude transformer 3. The end of the nut 2 is provided with an end hole 7. The diameter of the end hole 7 is smaller than the diameter of the inner hole of the nut 2. The outer periphery of the end hole 7 is a radial extension 8. The blade 5 extends out of the end hole 7. During the process of tightening the nut 2, the radial extension 8 presses the flange 6 against the end face of the amplitude transformer 3. The nut 2 is located outside the handheld housing 12, which facilitates the replacement of the blade 5.

[0021] In this technical solution, the end of the amplitude transformer 3 is provided with a thread 4. The tail of the blade 5 is pressed against the head end face of the amplitude transformer 3, and the blade 5 can be directly fastened to the amplitude transformer 3 by tightening the nut 2. This eliminates the need for intermediate connecting parts, reduces high-frequency vibration friction, reduces heat generation, and improves working efficiency. It also makes replacing the blade 5 more convenient. The nut 2 and the amplitude transformer 3 are pre-fixed as one piece, making it less likely to fall off and ensuring a good fastening effect. Because the ultrasonic cutting blade vibrates back and forth along the axial direction, each component in this solution is subjected to action and reaction forces in the axial direction, with no relative friction. This reduces the number of parts, increases lifespan, and reduces heat generation. At the same time, the tail of the blade 5 is thickened and strengthened, allowing the application of ceramic blades, which greatly improves the sharpness and durability of the blade 5.

[0022] Example 2:

[0023] This embodiment is an optimization based on the above embodiment 1.

[0024] To facilitate the installation of nut 2 and ensure that nut 2 is flush with luffing rod 3, luffing rod 3 has a narrow neck 9 at its end, thread 4 is provided on the narrow neck 9, and a step 10 is formed at the tail of the narrow neck 9.

[0025] Example 3:

[0026] This embodiment is an optimization based on the above embodiment 1.

[0027] To improve the fit between the flange 6 and the inner cavity of the nut 2, the front cavity inside the nut 2 is the flange receiving cavity 11, and the rear cavity wall inside the nut 2 is threaded to the end of the amplitude rod 3.

[0028] Example 4:

[0029] This embodiment is an optimization based on the above embodiment 3.

[0030] To better secure the blade 5, the inner wall of the flange receiving cavity 11 abuts against the outer peripheral wall of the flange 6.

[0031] Example 5:

[0032] This embodiment is an optimization based on the above embodiment 1.

[0033] To facilitate the installation of the ultrasonic transducer 1, the ultrasonic transducer 1 is provided with a connecting flange 13, which is fixed inside the handheld housing 12.

[0034] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A hand-held ultrasonic cutting blade head fixation device, characterized by: The device includes a handheld housing, an ultrasonic transducer, a flange cutter, and a nut. The front extension rod of the ultrasonic transducer is an amplitude transformer, the end of which extends out of the handheld housing and is threaded. The flange cutter includes a blade and a flange, the flange being sized and shaped to match the end of the amplitude transformer. The nut has an end face hole, the diameter of which is smaller than the diameter of the nut's inner hole. The outer periphery of the end face hole is a radial extension. The blade extends out of the end face hole. During tightening of the nut, the radial extension presses the flange against the end face of the amplitude transformer. The nut is located outside the handheld housing.

2. The hand-held ultrasonic cutting blade head fixation device of claim 1, wherein: The end of the amplitude rod is provided with a narrow neck, the thread is provided on the narrow neck, and the tail of the narrow neck forms a step.

3. The hand-held ultrasonic cutting blade head fixation device of claim 1, wherein: The front cavity inside the nut is a flange receiving cavity, and the rear cavity wall inside the nut is threadedly connected to the end of the amplitude transformer.

4. The hand-held ultrasonic cutting blade head fixation device of claim 3, wherein: The inner wall of the flange receiving cavity abuts against the outer peripheral wall of the flange.

5. The hand-held ultrasonic cutting blade head fixation device of claim 1, wherein: The ultrasonic transducer is equipped with a connecting flange, which is fixed inside the handheld housing.

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