A handheld ultrasonic cutting knife head fixing device

Abstract

The utility model relates to ultrasonic cutting knife technical field discloses a handheld ultrasonic cutting knife head fixing device, including handheld shell, ultrasonic transducer, tool bit and nut, the front end extension rod of ultrasonic transducer is variable amplitude rod, the end of variable amplitude rod stretches out handheld shell, the end of variable amplitude rod is equipped with center hole, the tool bit includes blade and inserts the pole, inserts the pole with center hole matching and inserts the pole and inserts into center hole, the end of variable amplitude rod is equipped with screw thread, the end of nut is equipped with end face hole, the aperture of end face hole is less than the aperture of nut inner hole, the outer periphery of end face hole is radial extension, the blade stretches out end face hole, in the process of screwing nut, radial extension will inserts the pole and press tightly in center hole, the utility model provides a handheld ultrasonic cutting knife head fixing device, has solved the problem that the existing chuck installs blade and is easy to cause abrasion to violent friction.

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 cutter head, 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. The end of the amplitude transformer has a central hole. The cutter head includes a blade and an insertion rod. The insertion rod matches the central hole and is inserted into the central hole. The end of the amplitude transformer has a thread. The end of the nut has an end hole. The diameter of the end hole is smaller than the diameter of the inner hole of the nut. The outer periphery of the end hole is a radial extension. The blade extends out of the end hole. During the tightening of the nut, the radial extension presses the insertion rod into the central hole. The nut is located outside the handheld housing.

[0006] In this technical solution, the end of the amplitude transformer is threaded, allowing the insertion rod to be inserted into the central hole. By tightening the nut, the blade can be directly secured to the amplitude transformer, eliminating intermediate connecting parts, reducing high-frequency vibration friction and heat generation, resulting in higher energy efficiency and easier blade replacement. The nut and amplitude transformer are pre-fixed as a single unit, preventing detachment and ensuring a secure hold. Because the ultrasonic cutting blade vibrates axially, each component in this solution experiences axial action and reaction forces, eliminating relative friction, reducing the number of parts, extending lifespan, and reducing heat generation. Simultaneously, the thickened and strengthened blade tail allows for the application of ceramic blades, significantly improving blade 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, to facilitate the installation of the ultrasonic transducer, the ultrasonic transducer is provided with a connecting flange, which is fixed inside the handheld housing.

[0009] Furthermore, for ease of molding, the insertion rod is a cylindrical rod.

[0010] The beneficial effects of this utility model are as follows: In this technical solution, because the end of the amplitude transformer is threaded, the insertion rod is inserted into the central hole, and the blade can be directly fastened to the amplitude transformer by tightening the nut. This eliminates the need for intermediate connecting parts, reduces high-frequency vibration friction, reduces heat generation, and improves working efficiency. Furthermore, blade replacement is more convenient. The nut and amplitude transformer are pre-fixed as a single unit, preventing them from easily falling off and ensuring a good fastening effect. Since the ultrasonic cutting blade vibrates back and forth along the axial direction, each component in this solution experiences action and reaction forces in the axial direction, resulting in no relative friction. This reduces the number of parts, increases lifespan, and reduces heat generation. Simultaneously, the thickened and strengthened tail of the blade allows for the application of ceramic blades, greatly improving the blade's sharpness and durability. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0013] Figure 3 This is a side view of the exploded structure of this utility model;

[0014] Figure 4 This is a cross-sectional view of the end of the amplitude transformer in this utility model;

[0015] Figure 5 This is a structural diagram of the present invention in use.

[0016] In the figure: 1. Ultrasonic transducer; 2. Nut; 3. Amplifier rod; 4. Center hole; 5. Blade; 6. Insert rod; 7. Thread; 8. End hole; 9. Radial extension; 10. Neck; 11. Step; 12. Handheld housing; 13. Connecting flange. Detailed Implementation

[0017] 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.

[0018] Example 1:

[0019] like Figures 1-5 As shown, this embodiment provides a handheld ultrasonic cutting knife head fixing device, including a handheld shell 12, an ultrasonic transducer 1, a cutting head, 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 shell 12. The end of the amplitude transformer 3 is provided with a central hole 4. The cutting head includes a blade 5 and an insertion rod 6. The insertion rod 6 matches the central hole 4 and is inserted into the central hole 4. For ease of forming, the insertion rod 6 is a cylindrical rod. The end of the amplitude transformer 3 is provided with a thread 7. The end of the nut 2 is provided with an end hole 8. The diameter of the end hole 8 is smaller than the diameter of the inner hole of the nut 2. The outer periphery of the end hole 8 is a radial extension 9. The blade 5 extends out of the end hole 8. During the process of tightening the nut 2, the radial extension 9 presses the insertion rod 6 into the central hole 4. The nut 2 is located outside the handheld shell 12, which facilitates the replacement of the blade 5.

[0020] In this technical solution, because the end of the amplitude transformer 3 is threaded 7, the insertion rod 6 is inserted into the central hole 4, 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. Furthermore, replacing the blade 5 is more convenient. The nut 2 and amplitude transformer 3 are pre-fixed as a single unit, preventing them from easily falling off and ensuring a good fastening effect. Since the ultrasonic cutting blade vibrates back and forth along the axial direction, each component in this solution experiences action and reaction forces in the axial direction, resulting in no relative friction. This reduces the number of parts, increases lifespan, and reduces heat generation. Simultaneously, 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.

[0021] Example 2:

[0022] This embodiment is an optimization based on the above embodiment 1.

[0023] 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 10 at its end, thread 7 is provided on the narrow neck 10, and a step 11 is formed at the tail of the narrow neck 10.

[0024] Example 3:

[0025] This embodiment is an optimization based on the above embodiment 2.

[0026] 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.

[0027] 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 handheld ultrasonic cutting blade head fixing device, characterized in that: The device includes a handheld housing, an ultrasonic transducer, a 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 housing. The end of the amplitude transformer has a central hole. The blade includes a blade and an insertion rod, which matches the central hole and is inserted into it. The end of the amplitude transformer has a thread. The end of 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 the tightening of the nut, the radial extension presses the insertion rod into the central hole. The nut is located outside the handheld housing.

2. The handheld ultrasonic cutting blade head fixing device according to claim 1, characterized in that: 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 handheld ultrasonic cutting blade head fixing device according to claim 1, characterized in that: The ultrasonic transducer is equipped with a connecting flange, which is fixed inside the handheld housing.

4. The handheld ultrasonic cutting blade head fixing device according to claim 1, characterized in that: The insertion rod is a cylindrical rod.

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