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, screw and blade, the front end extension rod of ultrasonic transducer is variable amplitude rod, the end of variable amplitude rod stretches out handheld shell, be equipped with central hole on variable amplitude rod, be equipped with side screw hole on variable amplitude rod, side screw hole communicates with central hole, the rear end of blade is the conformal section matched with central hole, the conformal section inserts central hole, the screw is connected with side screw hole threadedly, the end of screw and conformal section abut tightly, the screw is located outside handheld shell, the utility model provides a handheld ultrasonic cutting knife head fixing device has solved the problem that the machining difficulty of the gap of existing chuck is high, and the replacement use cost is too high.

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 one described in Chinese Utility Model Patent Publication No. CN104254431A (Ultrasonic Tool), which uses a chuck with gaps. In practical ultrasonic applications, this chuck is prone to severe friction and wear, necessitating replacement. The gaps in the chuck are difficult and costly to manufacture, placing a financial burden on users. Furthermore, the excessively large contact area between parts in this patent leads to intense friction and heat generation during ultrasonic applications, particularly between the retaining component and the inner hole of the amplitude transformer, affecting ultrasonic efficiency. Additionally, designs where side screws directly hold the blade can shatter 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 shell, an ultrasonic transducer, a screw, and a blade. The front extension rod of the ultrasonic transducer is an amplitude transformer, the end of which extends out of the handheld shell. The amplitude transformer has a central hole and a side threaded hole that communicates with the central hole. The rear end of the blade is a conformal section that matches the central hole and is inserted into the central hole. The screw is threadedly connected to the side threaded hole, the end of which abuts against the conformal section. The screw is located outside the handheld shell.

[0006] In this technical solution, the rear end of the blade is a conformal section that matches the central hole. The conformal section is inserted into the central hole, allowing the blade to be easily removed and replaced. The amplitude transformer has both a central hole and a side threaded hole that communicates with the central hole. A screw is threaded into the side threaded hole, and the end of the screw abuts against the conformal section. The user inserts the conformal section into the central hole and secures the blade by pressing the screw against it, resulting in a strong and effective fastening. The conformal section is integrally formed on the blade, and its shape matches the central hole, allowing the amplitude transformer to be directly fixed to the blade. This eliminates clamping parts, reduces friction between components under high-frequency vibration, improves lifespan, and reduces heat. Simultaneously, the thickened and strengthened tail of the blade allows for the application of ceramic blades, significantly improving the blade's sharpness and durability.

[0007] Furthermore, to increase the mating area with the screw, the conformal segment is provided with an abutting plane, and the screw abuts against the abutting plane.

[0008] Furthermore, the conformal section is provided with a countersunk hole, and the screw abuts against the countersunk hole.

[0009] Furthermore, the countersunk hole has a bevel that matches the end of the screw.

[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, since the rear end of the blade is a conformal section that matches the central hole, the blade can be easily removed from the central hole after the conformal section is inserted into it, making replacement convenient. Because the amplitude transformer has a central hole and a side threaded hole that communicates with the central hole, and the screw is threaded into the side threaded hole with its end abutting against the conformal section, the user can easily fix the blade by inserting the conformal section into the central hole and securing it with the screw, resulting in a good fastening effect. In this solution, the conformal section is integrally formed on the blade, and its shape matches the central hole, allowing the amplitude transformer to be directly fixed to the blade, eliminating clamping parts, reducing friction between parts under high-frequency vibration, improving lifespan, and reducing heat. 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

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

[0013] Figure 2 This is a side view of the structure of this utility model;

[0014] Figure 3This invention provides a schematic diagram of the exploded structure of two types of blades.

[0015] Figure 4 This invention presents a side view of the exploded structure of two types of blades.

[0016] Figure 5 This is a schematic cross-sectional view of the first type of blade of this utility model;

[0017] Figure 6 This is a schematic cross-sectional view of the second type of blade of this utility model;

[0018] Figure 7 This is a schematic cross-sectional view of the second type of blade of this utility model;

[0019] Figure 8 This is a schematic diagram of the structure of this utility model in use.

[0020] In the diagram: 1. Ultrasonic transducer; 2. Screw; 3. Blade; 4. Amplifier rod; 5. Center hole; 6. Side threaded hole; 7. Conformal section; 8. Abutment plane; 9. Countersunk hole; 10. Bevel; 11. Handheld housing; 12. Connecting flange. Detailed Implementation

[0021] 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.

[0022] Example 1:

[0023] like Figures 1-8 As shown, this embodiment provides a handheld ultrasonic cutting blade head fixing device, including a handheld housing 11, an ultrasonic transducer 1, a screw 2, and a blade 3. The front extension rod of the ultrasonic transducer 1 is an amplitude transformer 4, the end of which extends out of the handheld housing 11. The amplitude transformer 4 is provided with a central hole 5. It should be noted that the shape of the central hole 5 can be a round hole, a racetrack-shaped hole, or a square hole. The round hole is the easiest to process. The amplitude transformer 4 is provided with a side threaded hole 6, which communicates with the central hole 5. The rear end of the blade 3 is a conformal section 7 that matches the central hole 5. The conformal section 7 is inserted into the central hole 5. The screw 2 is threadedly connected to the side threaded hole 6, and the end of the screw 2 abuts against the conformal section 7. The screw 2 is located outside the handheld housing 11, which facilitates the replacement of the blade head components.

[0024] In this technical solution, the rear end of the blade 3 is a conformal section 7 that matches the central hole 5. The conformal section 7 is inserted into the central hole 5, allowing the blade 3 to be easily removed and replaced. The amplitude transformer 4 has a central hole 5 and a side threaded hole 6 that communicates with the central hole 5. The screw 2 is threaded into the side threaded hole 6, with its end abutting against the conformal section 7. The user inserts the conformal section 7 into the central hole 5 and secures the blade 3 by pressing the screw 2 against the conformal section 7, achieving a good fastening effect. In this solution, the conformal section 7 is integrally formed on the blade 3, and its shape matches the central hole 5, allowing the amplitude transformer 4 to be directly fixed to the blade 3. This eliminates clamping parts, reduces friction between components under high-frequency vibration, improves lifespan, and reduces heat. Simultaneously, the thickened and strengthened tail of the blade 3 allows for the application of ceramic blades, greatly improving the sharpness and durability of the blade 3.

[0025] Example 2:

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

[0027] To increase the mating area with screw 2, the conformal section 7 is provided with an abutting surface 8, and screw 2 abuts against the abutting surface 8.

[0028] Example 3:

[0029] This embodiment is an optimization based on the above embodiment 1.

[0030] The conformal section 7 is provided with a countersunk hole 9, and the screw 2 abuts against the countersunk hole 9.

[0031] Example 4:

[0032] This embodiment is an optimization based on the above embodiment 3.

[0033] The countersunk hole 9 has a bevel 10 that matches the end of the screw 2.

[0034] Example 5:

[0035] This embodiment is an optimization based on the above embodiment 1.

[0036] To facilitate the installation of the ultrasonic transducer 1, a connecting flange 12 is provided on the ultrasonic transducer 1, and the connecting flange 12 is fixed inside the handheld housing 11.

[0037] 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 screw, and a blade. The front extension rod of the ultrasonic transducer is an amplitude transformer, the end of which extends out of the handheld housing. The amplitude transformer has a central hole and a side threaded hole that communicates with the central hole. The rear end of the blade is a conformal section that matches the central hole and is inserted into the central hole. The screw is threaded into the side threaded hole, and the end of the screw abuts against the conformal section. The screw is located outside the handheld housing.

2. The handheld ultrasonic cutting blade head fixing device according to claim 1, characterized in that: The conformal section is provided with an abutting surface, and the screw abuts against the abutting surface.

3. The handheld ultrasonic cutting blade head fixing device according to claim 1, characterized in that: The conformal section is provided with a countersunk hole, and the screw abuts against the countersunk hole.

4. The handheld ultrasonic cutting blade head fixing device according to claim 3, characterized in that: The countersunk hole has a bevel that matches the end of the screw.

5. 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.

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