Mechanical gear shifting manual shaver

Abstract

The manual shaver comprises a handle, a shaver head, a rotary knob and a connecting rod, the shaver head comprises a base, a shaver seat and a shaver cover, the base is arranged at one end of the handle, the shaver seat is installed on the side, away from the handle, of the base, the shaver seat and the base are provided with reset structures, the shaver cover is arranged on the side, away from the base, of the shaver seat, and the shaver cover is provided with a connecting part. The connecting part is detachably arranged on the tool apron in a penetrating manner; the knob is rotationally mounted at one end of the handle away from the base; the connecting rod rotatably penetrates through the handle, is connected with the knob and is in threaded transmission connection with the connecting part; a first limiting structure is arranged between the tool apron and the base, and a second limiting structure is arranged between the tool apron and the tool cover. According to the mechanical gear shifting manual shaver, gear shifting can be carried out through the rotary knob at the end, away from the shaver head, of the handle, gear shifting operation is more convenient, meanwhile, the operation of disassembling and assembling the shaver cover can be carried out through the rotary knob, and use is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of razor technology, and in particular to a mechanically adjustable manual razor. Background Technology

[0002] Currently, some manual razors on the market with adjustable settings generally include a razor head and a handle. The razor head includes a base, a blade holder, and a blade cap. The base is rotatably connected to the handle, one end of the blade holder passes through the base and is screwed onto the handle, and the blade cap is located on the side of the blade holder facing away from the base. The blade cap and blade holder cooperate to clamp and fix the blade. With this type of manual razor, adjusting the distance between the blade and the base (i.e., adjusting the setting) requires one hand to hold the base of the razor head and the other hand to hold the handle, then rotating the handle relative to the base to adjust the setting. Due to the interference of the razor head, the setting adjustment operation is relatively inconvenient. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a mechanically adjustable manual razor, which allows for gear adjustment using a knob on the end of the handle away from the razor head, making gear adjustment more convenient. Simultaneously, the knob can also be used to remove and install the razor cover, further enhancing usability.

[0004] A mechanically adjustable manual razor according to an embodiment of the present invention includes a handle, a razor head, a knob, and a connecting rod. The razor head includes a base, a blade holder, and a blade cover. The base is disposed at one end of the handle, and the blade holder is mounted on the side of the base away from the handle. The blade holder and the base are provided with a reset structure. The blade cover is disposed on the side of the blade holder away from the base and has a connecting portion. The connecting portion is detachably inserted through the blade holder, and the blade cover and the blade holder are used to cooperate to clamp the blade. The knob is rotatably mounted at the end of the handle away from the base. The connecting rod is rotatably inserted through the handle, and the connecting rod is connected to the base. The knob is connected to drive the connecting rod to rotate. The connecting rod is threadedly connected to the connecting part. At least one of the connecting rod and the connecting part passes through the base. A first limiting structure is provided between the tool holder and the base to limit the relative rotation of the tool holder and the base. A second limiting structure is provided between the tool holder and the tool cover to limit the relative rotation of the tool holder and the tool cover. The connecting rod can drive the tool cover to move up and down along the rotation axis of the connecting rod. The tool cover can push the tool holder to move closer to the base. The reset structure can drive the tool holder to move away from the base.

[0005] A mechanically adjustable manual razor according to an embodiment of the present invention has at least the following beneficial effects: In the mechanically adjustable manual razor provided by the present invention, by rotating the knob in the direction of unscrewing the razor cover, the razor cover can be raised away from the knob along the rotation axis of the connecting rod; by rotating the knob in the direction of tightening the razor cover, the razor cover can be lowered towards the knob along the rotation axis of the connecting rod. When it is necessary to remove the razor cover, the knob can be rotated in the direction of unscrewing until the razor cover is unscrewed; when installing the razor cover, the knob can be rotated in the direction of tightening the razor cover to screw the razor cover onto the connecting rod. Thus, the razor cover can be disassembled and installed for blade replacement; when adjusting the speed, the knob can be rotated in the direction of tightening the razor cover. During this process, the razor cover can push the razor holder closer to the base, thereby reducing the distance between the blade and the base. Alternatively, the knob can be turned in the direction of unscrewing the razor cover. Before unscrewing the razor cover, the razor cover can rise away from the base, and the razor holder can rise synchronously with the razor cover under the drive of the reset structure. Thus, while ensuring that the razor cover and razor holder can clamp and fix the blade, the distance between the blade and the base can also be increased. With the above settings, the mechanically adjustable manual razor provided by this utility model can be adjusted using a knob. The knob is located at the end of the handle away from the razor head, which can avoid interference from the razor head and make the adjustment operation more convenient. At the same time, the razor cover can also be removed and installed using the knob, making it more convenient to use.

[0006] According to some embodiments of this utility model, the handle has multiple gear slots arranged circumferentially around the rotation axis of the connecting rod, and the knob or the connecting rod is equipped with an automatic telescopic positioning device. During the rotation of the connecting rod driven by the knob, the automatic telescopic positioning device can be inserted into any one of the gear slots; or, the knob or the connecting rod has multiple gear slots arranged circumferentially around the rotation axis of the connecting rod, and the handle is equipped with an automatic telescopic positioning device. During the rotation of the connecting rod driven by the knob, the automatic telescopic positioning device can be inserted into any one of the gear slots.

[0007] According to some embodiments of the present invention, a stroke limiting device is provided between the tool holder and the handle, the stroke limiting device being used to limit the range of the tool holder's rise and fall along the rotation axis of the connecting rod.

[0008] According to some embodiments of the present invention, the travel limiting device includes an anti-detachment component, which is rotatably inserted into the base or the handle. The anti-detachment component is screwed to the blade holder. The anti-detachment component is capable of moving up and down along the rotation axis of the connecting rod. An anti-detachment protrusion is provided between the anti-detachment component and the handle or the base, which is used to restrict the anti-detachment component from detaching from the base.

[0009] According to some embodiments of this utility model, the base has a first insertion hole, the knife holder has an annular protrusion inserted into the first insertion hole, at least one of the connecting part and the connecting rod passes through the inner side of the annular protrusion, the anti-disengagement component is screwed to the annular protrusion, the anti-disengagement component is sleeved on the connecting rod, and the reset structure includes a reset spring, the reset spring is located in the first insertion hole and sleeved on the annular protrusion and the anti-disengagement component.

[0010] According to some embodiments of the present invention, the first limiting structure includes a slot and a limiting protrusion. One of the slot and the limiting protrusion is disposed on the base, and the other is disposed on the tool holder. The limiting protrusion is inserted into the slot and can move up and down along the rotation axis of the connecting rod.

[0011] According to some embodiments of the present invention, the second limiting structure includes a positioning protrusion and a positioning groove. The positioning groove is disposed on the blade cover, and the positioning protrusion is disposed on one side of the blade holder facing the blade cover. The positioning protrusion is inserted into the positioning groove and is used to pass through and position the blade.

[0012] According to some embodiments of the present invention, a first compensation member is provided between the connecting rod and the knob. One of the connecting rod and the knob is first screwed to the first compensation member and then fixedly connected, while the other is inserted into the first compensation member.

[0013] According to some embodiments of the present invention, a second compensating member is provided between the connecting rod and the connecting part. One of the connecting rod and the connecting part is first screwed and then fixedly connected to the second compensating member, and the other is threadedly connected to the second compensating member.

[0014] According to some embodiments of this utility model, the base and the handle are first threaded together and then fixedly connected.

[0015] According to some embodiments of the present invention, the handle includes a main handle and a third compensating member. The third compensating member is first rotatably inserted into the main handle and then fixedly connected. The third compensating member is first threadedly connected to the base and then fixedly connected.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1This is a cross-sectional view of a mechanically adjustable manual razor according to an embodiment of the present utility model.

[0019] Figure 2 for Figure 1 An external schematic diagram of a mechanically adjustable manual razor is shown.

[0020] Figure 3 for Figure 1 An exploded view of a mechanically adjustable manual razor is shown.

[0021] Figure 4 for Figure 1 An exploded view of the blade head of a mechanically adjustable manual razor is shown.

[0022] Figure label:

[0023] Handle 100, main handle 110, second insertion hole 111, stop groove 1111, third compensation component 120, limiting cavity 130, cutter head 200, base 210, first insertion hole 211, slot 212, cutter holder 220, annular protrusion 221, limiting protrusion 222, positioning protrusion 223, cutter cover 230, connecting part 231, positioning groove 232, second compensation component 233, knob 300, automatic telescopic positioning device 310, connecting rod 400, first compensation component 410, reset structure 500, anti-detachment component 600, anti-detachment protrusion 610. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0025] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0027] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0028] In existing manual razors, the base 210 of the razor head 200, near the handle 100, is typically designed for hand gripping. However, due to cost considerations, this end of the base 210 is relatively short, and the end of the base 210 away from the handle 100 protrudes more than the end near the handle 100, making it inconvenient to grip. Furthermore, users need to be careful when gripping the base 210 to avoid accidental contact with the blades and potential injury. Therefore, the speed adjustment operation of existing manual razors is inconvenient. Additionally, in existing manual razors, the razor cap 230 is removed and the speed adjustment is performed separately, which is also inconvenient to use.

[0029] Reference Figures 1 to 3 According to an embodiment of the present invention, a mechanically adjustable manual razor includes a handle 100, a razor head 200, a knob 300, and a connecting rod 400. The razor head 200 includes a base 210, a blade holder 220, and a blade cover 230. The base 210 is disposed at one end of the handle 100, and the blade holder 220 is mounted on the side of the base 210 away from the handle 100. The blade holder 220 and the base 210 are provided with a reset structure 500. The blade cover 230 is disposed on the side of the blade holder 220 away from the base 210, and the blade cover 230 is provided with a connecting part 231. The connecting part 231 is detachably inserted through the blade holder 220. The blade cover 230 and the blade holder 220 are used to cooperate to clamp the blade. The knob 300 is rotatably mounted at the end of the handle 100 away from the base 210. The connecting rod 400 is rotatably inserted through the handle 100. The handle 100, connecting rod 400 and knob 300 are connected. Knob 300 can drive connecting rod 400 to rotate. Connecting rod 400 is threadedly connected to connecting part 231. At least one of connecting rod 400 and connecting part 231 passes through base 210. A first limiting structure for limiting relative rotation between tool holder 220 and base 210 is provided. A second limiting structure for limiting relative rotation between tool holder 220 and tool cover 230 is provided. Connecting rod 400 can drive tool cover 230 to move up and down along the rotation axis of connecting rod 400. Tool cover 230 can push tool holder 220 to move closer to base 210. Reset structure 500 can drive tool holder 220 to move away from base 210.

[0030] In the mechanically adjustable manual razor provided by this utility model, rotating the knob 300 in the direction of unscrewing the blade cover 230 causes the blade cover 230 to rise away from the knob 300 along the rotation axis of the connecting rod 400. Rotating the knob 300 in the direction of tightening the blade cover 230 causes the blade cover 230 to fall closer to the knob 300 along the rotation axis of the connecting rod 400. When it is necessary to remove the blade cover 230, the knob 300 can be rotated in the direction of unscrewing until the blade cover 230 is unscrewed. When installing the blade cover 230, the knob 300 can be rotated in the direction of tightening the blade cover 230 to screw the blade cover 230 onto the connecting rod 400. Thus, the blade cover 230 can be removed and installed for blade replacement. When adjusting the speed, the knob 300 can be rotated in the direction of tightening the blade cover 230. During this process, the blade cover 230 can push the blade holder 2. Move the handle 100 closer to the base 210, thereby reducing the distance between the blade and the base 210. Alternatively, rotate the knob 300 in the direction of unscrewing the blade cap 230. Before unscrewing the blade cap 230, the blade cap 230 can rise away from the base 210, and the blade holder 220 can rise synchronously with the blade cap 230 under the drive of the reset structure 500. Thus, while ensuring that the blade cap 230 and the blade holder 220 can clamp and fix the blade, the distance between the blade and the base 210 can also be increased. With the above settings, the mechanically adjustable manual razor provided by this utility model can be adjusted using the knob 300. The knob 300 is located at the end of the handle 100 away from the blade head 200, which can avoid interference from the blade head 200 and make the adjustment operation more convenient. At the same time, the knob 300 can also be used to remove and install the blade cap 230, making it more convenient to use.

[0031] Reference Figure 1 and Figure 3 According to some embodiments of this utility model, the handle 100 has multiple gear slots 1111 arranged circumferentially around the rotation axis of the connecting rod 400. The knob 300 or the connecting rod 400 is equipped with an automatic telescopic positioning device 310. During the rotation of the knob 300 and the connecting rod 400, the automatic telescopic positioning device 310 can be inserted into any one of the gear slots 1111. Through the cooperation between the automatic telescopic positioning device 310 and the multiple gear slots 1111, the damping of the knob 300 during rotation can be increased, preventing the user from rotating the knob 300 too quickly and improving the feel during operation. Simultaneously, during gear adjustment, each gear slot 1111 corresponds to a gear, thereby making gear adjustment more precise, and a mechanical sound can be generated to indicate gear adjustment.

[0032] Of course, in other embodiments, the knob 300 or the connecting rod 400 may also have multiple gear slots 1111 arranged around the rotation axis of the connecting rod 400. In this case, the handle 100 is equipped with an automatic telescopic positioning device 310. During the rotation of the knob 300 and the connecting rod 400, the automatic telescopic positioning device 310 can be inserted into any gear slot 1111.

[0033] Reference Figure 1 and Figure 3 According to some embodiments of the present invention, the automatic telescopic positioning device 310 is configured as an elastic telescopic column, thereby the automatic telescopic positioning device 310 has a simple structure and low cost.

[0034] Of course, in other embodiments, the automatic telescopic positioning device 310 may also be configured as a spring top ball assembly, a magnetic telescopic device, a gas spring, or other similar devices.

[0035] Reference Figure 1 and Figure 3 According to some embodiments of the present invention, a stroke limiting device is provided between the tool holder 220 and the handle 100. The stroke limiting device is used to limit the range of the tool holder 220 rising and falling along the rotation axis of the connecting rod 400, thereby preventing the tool holder 220 from detaching from the base 210.

[0036] Specifically, the travel limiting device includes an anti-detachment component 600, which is rotatably inserted into the base 210 or the handle 100. The anti-detachment component 600 is screwed to the blade holder 220. The anti-detachment component 600 can move up and down along the rotation axis of the connecting rod 400. An anti-detachment protrusion 610 is provided between the anti-detachment component 600 and the handle 100 or the base 210. The anti-detachment protrusion 610 is used to prevent the anti-detachment component 600 from detaching from the base 210. With the above configuration, the anti-detachment protrusion 610 can limit the range of movement of the anti-detachment component 600 along the rotation axis of the connecting rod 400, thereby preventing the anti-detachment component 600 from detaching from the base 210. The anti-detachment component 600 is screwed to the tool holder 220, which also prevents the tool holder 220 from detaching from the base 210. The relative rotation of the anti-detachment component 600 and the tool holder 220 can adjust the thread engagement length between the anti-detachment component 600 and the tool holder 220, thereby compensating for the machining errors of the anti-detachment component 600 and the tool holder 220, making the installation position of the tool holder 220 relative to the base 210 accurate, and ensuring the accuracy of gear adjustment.

[0037] Reference Figure 1 and Figure 4According to some embodiments of this utility model, the base 210 has a first insertion hole 211, the knife holder 220 has an annular protrusion 221 inserted into the first insertion hole 211, at least one of the connecting part 231 and the connecting rod 400 passes through the inner side of the annular protrusion 221, the anti-disengagement member 600 is screwed to the annular protrusion 221, the anti-disengagement member 600 is sleeved on the connecting rod 400, and the reset structure 500 includes a reset spring, the reset spring is located in the first insertion hole 211 and sleeved on the annular protrusion 221 and the anti-disengagement member 600. Thus, the annular protrusion 221 can separate the reset spring from the connecting rod 400, avoiding interference between the reset spring and the connecting rod 400. In addition, the reset spring can be sleeved on the annular protrusion 221 to facilitate the installation of the reset spring.

[0038] Reference Figure 1 and Figure 3 In some embodiments, a second insertion hole 111 is provided at the end of the handle 100 away from the blade 200, and one end of the knob 300 is rotatably installed in the second insertion hole 111. To prevent the knob 300 from disengaging from the second insertion hole 111, a fastening structure is provided between the knob 300 and the inner wall of the second insertion hole 111.

[0039] In the specific implementation process, the gear groove 1111 is evenly arranged on the inner wall of the second socket 111.

[0040] Reference Figure 1 and Figure 4 According to some embodiments of the present invention, the first limiting structure includes a slot 212 and a limiting protrusion 222. One of the slot 212 and the limiting protrusion 222 is disposed on the base 210, and the other is disposed on the tool holder 220. The limiting protrusion 222 is inserted into the slot 212. The limiting protrusion 222 can rise and fall along the rotation axis of the connecting rod 400. Thus, through the cooperation between the limiting protrusion 222 and the slot 212, the rising and falling of the tool holder 220 can be guided, making the gear adjustment more stable, and the rotation of the tool holder 220 relative to the base 210 can be prevented.

[0041] Of course, in other embodiments, the first limiting structure described above can also be configured in other ways. For example, the first limiting structure may include the inner wall of the first insertion hole 211 and the outer peripheral surface of the annular protrusion 221. The cross-sectional profiles of both the inner wall of the first insertion hole 211 and the outer peripheral surface of the annular protrusion 221 are hexagonal. Thus, the rotation of the knife holder 220 relative to the base 210 can be restricted by the cooperation between the inner wall of the first insertion hole 211 and the outer peripheral surface of the annular protrusion 221.

[0042] Reference Figure 1 , Figure 3 and Figure 4According to some embodiments of this utility model, the second limiting structure includes a positioning protrusion 223 and a positioning groove 232. The positioning groove 232 is disposed on the blade cover 230, and the positioning protrusion 223 is disposed on the side of the blade holder 220 facing the blade cover 230. The positioning protrusion 223 is inserted into the positioning groove 232 and is used to insert and position the blade. Thus, the positioning protrusion 223 on the blade holder 220 for positioning and installing the blade can be used to limit the rotation of the blade cover 230 relative to the blade holder 220.

[0043] Typically, the handle 100 has some gear numbers set, which correspond to the gears adjusted by the knob 300 in the design drawings. However, due to the existence of manufacturing errors, the gear numbers may not correspond to the actual gears adjusted by the knob 300, resulting in inaccurate gear adjustment.

[0044] Reference Figure 1 and Figure 3 According to some embodiments of this utility model, a first compensating member 410 is provided between the connecting rod 400 and the knob 300. The connecting rod 400 and the first compensating member 410 are first screwed together and then fixedly connected, and the knob 300 is inserted into the first compensating member 410. Thus, in the process of assembling the connecting rod 400 and the knob 300 together, the connecting rod 400 and the first compensating member 410 are first screwed together. By rotating the connecting rod 400 and the first compensating member 410 relative to each other, the engagement length of the connecting rod 400 and the first compensating member 410 is adjusted, thereby adjusting the overall length of the connecting rod 400 and the first compensating member 410 after connection. Then, the connecting rod 400 and the first compensating member 410 are fixed by means of adhesive bonding, welding, etc. Finally, the first compensating member 410 and the connecting rod 400 are inserted together. In this way, the connection error between the connecting rod 400 and the knob 300 can be compensated, ensuring the accuracy of gear adjustment.

[0045] Of course, in other embodiments, the knob 300 and the first compensation member 410 can be screwed together and then fixedly connected, while the connecting rod 400 is plugged into the first compensation member 410. In this way, error compensation can also be performed to ensure the accuracy of gear adjustment.

[0046] Reference Figure 1 and Figure 3According to some embodiments of this utility model, a second compensating member 233 is provided between the connecting rod 400 and the connecting part 231. One of the connecting rod 400 and the connecting part 231 is first screwed and then fixedly connected to the second compensating member 233, while the other is threadedly connected to the second compensating member 233. With the above arrangement, during the assembly process, after the second compensating member 233 is screwed to the connecting rod 400 or the connecting part 231, the engagement length between the second compensating member 233 and the connecting rod 400 or the connecting part 231 can be adjusted by rotation to compensate for the connection error between the knife cover 230 and the connecting rod 400. Then, the second compensating member 233 is fixed to the connecting rod 400 or the connecting part 231, thereby ensuring the accuracy of gear adjustment.

[0047] Reference Figure 1 and Figure 3 According to some embodiments of the present invention, the base 210 and the handle 100 are first threaded together and then fixedly connected. Thus, the base 210 and the handle 100 are first threaded together so as to rotate and adjust the engagement length between the base 210 and the handle 100, thereby adjusting the connection error between the handle 100 and the base 210, ensuring that the installation position of the base 210 is accurate, and ultimately ensuring the accuracy of gear adjustment.

[0048] Reference Figure 1 and Figure 3 According to some embodiments of this utility model, the handle 100 includes a main handle 110 and a third compensating member 120. The third compensating member 120 is first rotatably inserted into the main handle 110 and then fixedly connected. The third compensating member 120 is first threadedly connected to the base 210 and then fixedly connected. With the above configuration, the third compensating member 120 can be inserted into main handles 110 with different appearance shapes. During the assembly process, the main handle 110 can be rotated relative to the third compensating member 120 to adjust to the required angle and position before the third compensating member 120 is fixedly connected to the main handle 110. This allows for positional adjustment of different main handles 110, ensuring that the gear numbers on different main handles 110 accurately correspond to the gear positions actually adjusted by the knob 300.

[0049] The third compensating member 120 and the main handle 110 form a limiting cavity 130. One end of the anti-detachment member 600 is inserted into the limiting cavity 130, and the anti-detachment protrusion 610 is connected to the anti-detachment member 600 and located within the limiting cavity 130. Through the cooperation between the anti-detachment protrusion 610 and the limiting cavity 130, the travel range of the anti-detachment member 600 can be limited, preventing the anti-detachment member 600 from falling off. In addition, the above arrangement also facilitates the installation of the anti-detachment member 600.

[0050] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0051] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A mechanically adjustable manual razor, characterized in that, include: Handle (100); The blade head (200) includes a base (210), a blade holder (220), and a blade cover (230). The base (210) is disposed at one end of the handle (100). The blade holder (220) is installed on the side of the base (210) away from the handle (100). The blade holder (220) and the base (210) are provided with a reset structure (500). The blade cover (230) is disposed on the side of the blade holder (220) away from the base (210). The blade cover (230) is provided with a connecting part (231). The connecting part (231) is detachably inserted through the blade holder (220). The blade cover (230) and the blade holder (220) are used to cooperate with each other to clamp the blade. A knob (300) is rotatably mounted on the end of the handle (100) away from the base (210); A connecting rod (400) is rotatably inserted through the handle (100). The connecting rod (400) is connected to the knob (300). The knob (300) can drive the connecting rod (400) to rotate. The connecting rod (400) is threadedly connected to the connecting part (231). At least one of the connecting rod (400) and the connecting part (231) is inserted through the base (210). The tool holder (220) and the base (210) are provided with a first limiting structure for restricting the relative rotation of the tool holder (220) and the base (210), and the tool holder (220) and the tool cover (230) are provided with a second limiting structure for restricting the relative rotation of the tool holder (220) and the tool cover (230). The connecting rod (400) can drive the tool cover (230) to move up and down along the rotation axis of the connecting rod (400). The tool cover (230) can push the tool holder (220) to move closer to the base (210), and the reset structure (500) can drive the tool holder (220) to move away from the base (210).

2. The mechanically adjustable manual razor according to claim 1, characterized in that: The handle (100) has multiple gear slots (1111) arranged circumferentially around the rotation axis of the connecting rod (400). An automatic telescopic positioning device (310) is installed on the knob (300) or the connecting rod (400). During the rotation of the connecting rod (400) driven by the knob (300), the automatic telescopic positioning device (310) can be inserted into any one of the gear slots (1111); or... The knob (300) or the connecting rod (400) is circumferentially arranged with multiple gear slots (1111) around the rotation axis of the connecting rod (400). The handle (100) is equipped with an automatic telescopic positioning device (310). During the rotation of the knob (300) and the connecting rod (400), the automatic telescopic positioning device (310) can be inserted into any one of the gear slots (1111).

3. A mechanically adjustable manual razor according to claim 1, characterized in that, A stroke limiting device is provided between the tool holder (220) and the handle (100), which is used to limit the range of the tool holder (220) moving up and down along the rotation axis of the connecting rod (400).

4. A mechanically adjustable manual razor according to claim 3, characterized in that, The travel limiting device includes an anti-detachment component (600), which is rotatably inserted into the base (210) or the handle (100). The anti-detachment component (600) is screwed to the blade holder (220). The anti-detachment component (600) is capable of moving up and down along the rotation axis of the connecting rod (400). An anti-detachment protrusion (610) is provided between the anti-detachment component (600) and the handle (100) or the base (210). The anti-detachment protrusion (610) is used to restrict the anti-detachment component (600) from detaching from the base (210).

5. A mechanically adjustable manual razor according to claim 4, characterized in that, The base (210) has a first insertion hole (211), the knife holder (220) has an annular protrusion (221) inserted into the first insertion hole (211), at least one of the connecting part (231) and the connecting rod (400) passes through the inner side of the annular protrusion (221), the anti-disengagement member (600) is screwed to the annular protrusion (221), the anti-disengagement member (600) is sleeved on the connecting rod (400), the reset structure (500) includes a reset spring, the reset spring is located in the first insertion hole (211) and sleeved on the annular protrusion (221) and the anti-disengagement member (600).

6. A mechanically adjustable manual razor according to claim 1, characterized in that, The first limiting structure includes a slot (212) and a limiting protrusion (222). One of the slot (212) and the limiting protrusion (222) is disposed on the base (210), and the other is disposed on the blade holder (220). The limiting protrusion (222) is inserted into the slot (212) and can be raised and lowered along the rotation axis of the connecting rod (400). The second limiting structure includes a positioning protrusion (223) and a positioning groove (232). The positioning groove (232) is disposed on the blade cover (230), and the positioning protrusion (223) is disposed on one side of the blade holder (220) facing the blade cover (230). The positioning protrusion (223) is inserted into the positioning groove (232) and is used to insert and position the blade.

7. A mechanically adjustable manual razor according to claim 1, characterized in that, A first compensation member (410) is provided between the connecting rod (400) and the knob (300). One of the connecting rod (400) and the knob (300) is first screwed and then fixedly connected to the first compensation member (410), and the other is inserted into the first compensation member (410).

8. A mechanically adjustable manual razor according to claim 7, characterized in that, A second compensation member (233) is provided between the connecting rod (400) and the connecting part (231). One of the connecting rod (400) and the connecting part (231) is first screwed and then fixedly connected to the second compensation member (233), and the other is threadedly connected to the second compensation member (233).

9. A mechanically adjustable manual razor according to claim 7, characterized in that, The base (210) and the handle (100) are first threaded together and then fixedly connected.

10. A mechanically adjustable manual razor according to claim 9, characterized in that, The handle (100) includes a main handle (110) and a third compensation member (120). The third compensation member (120) is first rotatably inserted into the main handle (110) and then fixedly connected. The third compensation member (120) is first threadedly connected to the base (210) and then fixedly connected.

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