Shaver

By using a positioning frame design where the first and second seats are integrally molded and a two-color injection molding process is adopted, the problems of complex molding and high cost of existing shaver positioning frames are solved, and low-cost, high-stability shaver production is achieved.

CN223820581UActive Publication Date: 2026-01-23SHANGHAI FLYCO ELECTRICAL APPLIANCE
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Patent Information

Application Number
CN202520452385.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-14
Publication Date
2026-01-23
Estimated Expiration
2035-03-14

AI Technical Summary

Technical Problem

The existing shaver positioning frame has a complex molding process, high cost, and is difficult to adapt to large-scale production.

Method used

The positioning frame design adopts an integrated molding of the first and second seats, and combines rigid and soft plastics through a two-color injection molding process, which simplifies the assembly process and reduces costs.

Benefits of technology

This design achieves a low-cost, highly stable connection for the positioning frame, making it suitable for mass production and improving the overall performance and lifespan of the shaver.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the field of shavers, and provides a shaver which comprises a shell, a tool bit assembly, a transmission assembly and a positioning frame, the transmission assembly is arranged in the shell and is suitable for being in transmission connection with the tool bit assembly, the positioning frame comprises a first seat body and a second seat body, the first seat body is arranged at the top of the shell, a plurality of first through holes are formed in the first seat body in a penetrating mode, and the second seat body is provided with a plurality of second through holes. The second seat body and the first seat body are integrally formed and relatively located at the top of the first through hole of the first seat body, a second through hole is formed in the second seat body in a penetrating mode, and the transmission assembly is suitable for penetrating through the first through hole and the second through hole to be connected with the tool bit assembly. The positioning frame comprises the first seat body and the second seat body, the second seat body and the first seat body are integrally formed and relatively located at the top of the first through hole of the first seat body, the transmission assembly is suitable for being connected with the tool bit assembly behind the first through hole and the second through hole, and at the moment, the positioning frame is few in assembling procedure, low in cost and suitable for large-scale production.
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Description

TECHNICAL FIELD

[0001] The utility model relates to the field of shavers, further relates to a shaver. BACKGROUND

[0002] In the existing shaver, the transmission head of the transmission assembly is mostly suitable for connecting the cutter head assembly through the through hole in the middle of the positioning frame, at this time, soft rubber material needs to be used around the transmission head of the positioning frame to avoid hard contact between the transmission head and the positioning frame. The existing positioning frame mostly adopts die forming, that is, the soft rubber is fixed on the bottom of the hard rubber through the gasket. In the process of die forming, the gasket is in interference fit with the hard rubber and fixes the soft rubber on the hard rubber. At this time, the positioning frame forms a three-layer firm structure of hard rubber, soft rubber and gasket. However, the forming steps of the positioning frame in this way are complex and the cost is high. SUMMARY

[0003] In view of the above technical problems, the utility model aims at providing a shaver. The positioning frame comprises a first seat body and a second seat body. The second seat body is integrally formed with the first seat body and is located at the top of the first through hole of the first seat body. The transmission assembly is suitable for connecting the cutter head assembly after passing through the first through hole and the second through hole. At this time, the positioning frame has few assembly procedures, low cost and is suitable for large-scale production.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a shaver, which comprises a shell, a cutter head assembly, a transmission assembly and a positioning frame. The transmission assembly is arranged in the shell and is suitable for driving connection with the cutter head assembly. The positioning frame comprises a first seat body and a second seat body. The first seat body is arranged at the top of the shell. A plurality of first through holes are arranged through the first seat body. The second seat body is integrally formed with the first seat body and is located at the top of the first through hole of the first seat body. A second through hole is arranged through the second seat body. The transmission assembly is suitable for connecting the cutter head assembly after passing through the first through hole and the second through hole.

[0005] In some embodiments, the first seat body is made of hard plastic, the second seat body is made of soft plastic, and the first seat body and the second seat body are integrally formed by a two-color injection molding process.

[0006] In some embodiments, the first seat body is provided with a first mounting portion at the top. The first mounting portion is provided with a first mounting groove. The groove bottom of the first mounting groove is provided with the first through hole. The second seat body is abutted and mounted in the first mounting groove, and the second through hole is in communication with the first through hole.

[0007] In some embodiments, the groove bottom of the first mounting groove is further provided with a second mounting groove. The second seat body is further provided with a second mounting portion at the bottom. The second mounting portion is abutted and mounted in the second mounting groove.

[0008] In some embodiments, the positioning frame sidewall is further provided with a plurality of snap-fit ​​grooves, the groove wall of the snap-fit ​​groove is provided with an abutment portion, the snap-fit ​​groove is provided with a snap-fit ​​member and an elastic member, the snap-fit ​​member is adapted to abut against the abutment portion and the snap-fit ​​member is at least partially adapted to extend out of the snap-fit ​​groove and snap-fit ​​and fix to the cutter head assembly, and the elastic member elastically connects the snap-fit ​​member and the bottom of the snap-fit ​​groove.

[0009] In some embodiments, the bottom of the first base is provided with a first fixing post, and the top of the housing is provided with a second fixing post. The locking member is adapted to fix the first fixing post and the second fixing post, so that the first base and the housing are fixedly connected.

[0010] In some embodiments, the bottom of the first fixing post is provided with a first fixing groove, and the top of the second fixing post is adapted to be inserted into the first fixing groove.

[0011] In some embodiments, the bottom of the first base is provided with a plurality of first limiting portions, each of which has a first limiting groove, and the top of the housing is provided with a plurality of second limiting portions, the second limiting portions being adapted to be snapped and fixed in the first limiting groove.

[0012] In some embodiments, the bottom of the first seat is provided with a plurality of third limiting parts, and the top of the housing is provided with a plurality of fourth limiting parts. The fourth limiting parts are provided with second limiting grooves, and the third limiting parts are adapted to be snapped and fixed in the second limiting grooves.

[0013] In some embodiments, a plurality of first snap-fit ​​blocks are provided on the outer side wall of the first seat, and a second snap-fit ​​block is provided at the inner edge of the housing. The first snap-fit ​​blocks are adapted to snap-fit ​​and fix to the inner side of the second snap-fit ​​block.

[0014] Compared with the prior art, the razor provided by this utility model has at least one of the following beneficial effects:

[0015] 1. The positioning frame includes a first base and a second base. The second base and the first base are integrally formed and are located opposite each other at the top of the first through hole of the first base. The transmission component is adapted to connect the cutter head assembly after the first through hole and the second through hole. At this time, the positioning frame has fewer assembly steps, lower cost, and is suitable for mass production.

[0016] 2. The first mounting part is provided with a first mounting groove, and the second seat is abutted and installed in the first mounting groove. Its bottom is tightly fitted with the bottom of the first mounting groove, which ensures the stability of the structure. At the same time, it also ensures that the second through hole and the first through hole are precisely aligned and connected, which provides a guarantee for the smooth passage of the transmission component.

[0017] 3. A second mounting groove is added to the bottom of the first mounting groove, and the second mounting part of the second seat is precisely embedded therein, which significantly increases the contact area between the first seat and the second seat. This not only improves the overall stability and firmness of the positioning frame, but also effectively reduces the risk of loosening caused by vibration or external force. Attached Figure Description

[0018] The preferred embodiments will be described below in a clear and easy-to-understand manner, in conjunction with the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages and implementation methods of this utility model.

[0019] Figure 1 This is a cross-sectional view of a razor;

[0020] Figure 2 This is a diagram showing the location of the positioning frame;

[0021] Figure 3 This is an exploded view of the positioning frame;

[0022] Figure 4 This is a cross-sectional view of the first structure;

[0023] Figure 5 This is the bottom view of the first structure;

[0024] Figure 6 This is a top view of the casing.

[0025] Explanation of icon numbers:

[0026] Housing 1, second fixing post 11, second limiting part 12, fourth limiting part 13, second limiting groove 131, second locking block 14, cutter head assembly 2, transmission assembly 3.

[0027] Positioning bracket 4, first base 41, first through hole 410, first mounting part 411, first mounting groove 412, second mounting groove 413, first fixing post 414, locking member 4141, first fixing groove 4142, first limiting part 415, first limiting groove 4151, third limiting part 416, first snap-fit ​​block 417, snap-fit ​​groove 418, abutment part 4181, snap-fit ​​member 4182, elastic member 4183.

[0028] Second base 42, second through hole 420, second mounting part 421. Detailed Implementation

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0030] To keep the drawings concise, each figure only schematically shows the parts relevant to the utility model, and these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of the components with the same structure or function is schematically depicted, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0031] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0032] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] Furthermore, in the description of this application, the terms "first," "second," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance. It should be noted that the above embodiments can be freely combined as needed. The above are merely preferred embodiments of this utility model. It should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

[0034] refer to Figures 1 to 4This utility model provides a shaver, including a housing 1, a blade assembly 2, a transmission assembly 3, and a positioning frame 4. The transmission assembly 3 is disposed inside the housing 1 and is adapted to drive and connect the blade assembly 2. The positioning frame 4 includes a first seat 41 and a second seat 42. The first seat 41 is disposed on the top of the housing 1 and has a plurality of first through holes 410. The second seat 42 is integrally formed with the first seat 41 and is located opposite to the top of the first through holes 410 of the first seat 41. The second seat 42 has a second through hole 420. The transmission assembly 3 is adapted to pass through the first through holes 410 and the second through holes 420 and then connect to the blade assembly 2.

[0035] In this embodiment, the positioning frame 4 includes a first base 41 and a second base 42. The second base 42 is integrally formed with the first base 41 and is located on top of the first through hole 410 of the first base 41. The transmission component 3 is adapted to connect the cutter head component 2 after the first through hole 410 and the second through hole 420. At this time, the positioning frame 4 has fewer assembly steps, lower cost, and is suitable for mass production.

[0036] Specifically, the shaver mainly includes a housing 1, a blade assembly 2, and a transmission assembly 3. The transmission assembly 3 is located inside the housing 1 and is used to achieve a transmission connection with the blade assembly 2, ensuring the efficient operation of the shaver. It also includes a positioning frame 4, which consists of a first base 41 and a second base 42. The first base 41 is stably mounted on the top of the housing 1 and has several first through holes 410 extending through it. The second base 42 is integrally formed with the first base 41 and is positioned opposite to the first base 41 at the top of the first through holes 410, while the second base 42 has a second through hole 420 extending through it. The transmission assembly 3 can accurately pass through the first through holes 410 and the second through holes 420, thereby achieving a stable connection with the blade assembly 2. Preferably, the first seat 41 is made of rigid plastic and the second seat 42 is made of soft plastic. The first seat 41 and the second seat 42 are integrally molded by a two-color injection molding process. This not only simplifies the assembly process and reduces the assembly steps of parts (gaskets), but also effectively reduces the error risk in the production process and improves the overall stability and reliability of the product.

[0037] It is worth noting that the use of a two-color injection molding process for the second seat 42 and the first seat 41 reduces the use of shims required in traditional assembly, thereby significantly lowering production costs. This also makes the positioning frame 4 more compact, with higher space utilization, further improving the overall performance and lifespan of the shaver. Furthermore, this positioning frame 4 gives the shaver a significant advantage in mass production, significantly improving production efficiency, reducing unit production costs, enhancing the product's market competitiveness, and providing consumers with a higher-quality, more efficient, and more affordable shaving experience. The transmission assembly 3 and the blade assembly 2 are prior art in this application and will not be further described here.

[0038] Further, refer to Figure 4 The first base 41 has a first mounting part 411 on its top, a first mounting groove 412 on its first mounting part 411, a first through hole 410 at the bottom of the first mounting groove 412, and the second base 42 is abutted and installed in the first mounting groove 412 and the second through hole 420 communicates with the first through hole 410.

[0039] In this embodiment, the first mounting part 411 is provided with a first mounting groove 412, and the second seat 42 is abutted and installed in the first mounting groove 412. Its bottom is tightly fitted with the bottom of the first mounting groove 412, which ensures the stability of the structure. At the same time, it also ensures that the second through hole 420 and the first through hole 410 are precisely aligned and connected, which provides a guarantee for the smooth passage of the transmission component 3.

[0040] Specifically, the first mounting part 411 is provided with a first mounting groove 412 for precise positioning and installation of the second seat 42. The bottom of the first mounting groove 412 has a first through hole 410 that penetrates the first seat 41, providing a passage for the transmission assembly 3. The second seat 42 is abutted and installed within the first mounting groove 412, with its bottom tightly fitted to the bottom of the groove, ensuring structural stability. Simultaneously, the second seat 42 is provided with a second through hole 420, which is precisely aligned with and connected to the first through hole 410, forming a continuous channel penetrating the positioning frame 4, ensuring the smooth passage of the transmission assembly 3. At this point, the connection between the first seat 41 and the second seat 42 is tighter and more stable, avoiding potential loosening or misalignment. The first mounting groove 412 not only provides a precise mounting position for the second seat 42, but also achieves seamless connection on the positioning frame 4 through the communication between the first through hole 410 of the first mounting groove 412 and the second through hole 420 of the second seat 42. This improves the overall strength and stability of the positioning frame 4, ensures the smoothness of the transmission component 3 when passing through the through hole, reduces running resistance, and improves the performance of the shaver.

[0041] Preferably, the bottom of the first mounting groove 412 is further provided with a second mounting groove 413, and the bottom of the second base 42 is further provided with a second mounting part 421, which is abutted and installed in the second mounting groove 413.

[0042] In this embodiment, a second mounting groove 413 is added to the bottom of the first mounting groove 412, and the second mounting part 421 of the second seat 42 is precisely embedded therein, which significantly increases the contact area between the first seat 41 and the second seat 42. This not only improves the overall stability and firmness of the positioning frame 4, but also effectively reduces the risk of loosening caused by vibration or external force.

[0043] Specifically, the second mounting groove 413 is located on the outer ring of the first mounting groove 412, i.e., on the side away from the first through hole 410. During the molding process, the second mounting part 421 of the second seat 42 can be precisely molded into the second mounting groove 413 of the first seat 41, forming a nested connection. This ensures a tight fit between the second mounting part 421 and the second mounting groove 413, significantly increasing the contact area between the first seat 41 and the second seat 42. This allows for a more even distribution of stress during assembly, thereby greatly improving the overall robustness and stability of the positioning frame 4. During the use of the shaver, it can also effectively resist external forces caused by vibration, impact, or frequent use, ensuring that the positioning frame 4 remains stable during long-term use and reducing the risk of loosening or falling off.

[0044] Further, refer to Figure 2 , Figure 5 and Figure 6 The positioning frame 4 is suitable for detachable connection with the cutter head assembly 2. The detachable connection method is diverse. In this application, the side wall of the positioning frame 4 is also provided with several snap-fit ​​grooves 418. An abutment portion 4181 is provided on the groove wall of each snap-fit ​​groove 418. A snap-fit ​​element 4182 and an elastic element 4183 are provided within each snap-fit ​​groove 418. The snap-fit ​​element 4182 is adapted to abut against the abutment portion 4181, and at least partially extends out of the snap-fit ​​groove 418 to snap and fix the cutter head assembly 2. The elastic element 4183 elastically connects the snap-fit ​​element 4182 and the bottom of the snap-fit ​​groove 418. In this embodiment, the application utilizes the elastic deformation capability of the elastic element 4183 to enable the snap-fit ​​element 4182 to quickly snap and fix the cutter head assembly 2 during assembly, while ensuring the reliability and stability of the connection. Through the buffering effect of the elastic element 4183, it can also effectively absorb external impacts and vibrations, reducing loosening or damage caused by external forces during use. Furthermore, the mating design of the latching member 4182 and the abutment part 4181 further improves assembly accuracy and firmness, simplifies the assembly process, and reduces production costs. It is worth noting that the connection between the cutter head assembly 2 and the housing 1 can also be achieved through magnetic attraction or other methods, which will not be further elaborated here.

[0045] Further, refer to Figure 5 and Figure 6 The first base 41 is provided with a first fixing post 414 at the bottom and a second fixing post 11 at the top of the housing 1. The locking member 4141 is adapted to fix the first fixing post 414 and the second fixing post 11, so that the first base 41 and the housing 1 are fixedly connected.

[0046] In this embodiment, the cooperation of the first fixing post 414, the second fixing post 11 and the locking member 4141 can effectively enhance the connection strength and stability between the first base 41 and the housing 1, ensuring that the two can fit tightly together during use and will not loosen or fall off.

[0047] Specifically, the first fixing post 414 and the second fixing post 11 are tightly connected by the locking member 4141, which can effectively disperse and withstand various external forces generated during the use of the shaver, including vibration, impact and torsional force, thereby significantly improving the connection strength and stability between the positioning frame 4 and the housing 1. The locking member 4141 includes, but is not limited to, screws, bolts, clips or rivets. Moreover, both the first fixing post 414 and the second fixing post 11 are hidden inside or on the side of the positioning frame 4 and the housing 1, making the overall appearance of the shaver simpler and more beautiful, while reducing the safety hazards that may be caused by external connecting parts. Preferably, the bottom of the first fixing post 414 is provided with a first fixing groove 4142, and the top of the second fixing post 11 is adapted to be inserted into the first fixing groove 4142. The top of the second fixing post 11 is inserted into the first fixing groove 4142, so that the second fixing post 11 is nested within the first fixing groove 4142 of the first fixing post 414. This increases the contact area between the first base 41 and the housing 1, and effectively limits the relative displacement between the first fixing post 414 and the second fixing post 11, significantly improving the stability and vibration resistance of the connection. Furthermore, the cooperation between the first fixing groove 4142 and the second fixing post 11 provides precise positioning for the installation of the locking component 4141. During assembly, after the second fixing post 11 is inserted into the first fixing groove 4142, the relative positions of the two are essentially determined, eliminating the need for additional alignment operations. This greatly simplifies the assembly process, improves assembly efficiency, reduces potential human errors during assembly, and ensures consistent quality standards in every assembly, making it particularly suitable for large-scale industrial production.

[0048] It is worth noting that the positioning and fixing methods of the first seat 41 and the housing 1 are diverse. Through various positioning structure designs, the first seat 41 can be accurately positioned and securely installed on the housing 1, thereby providing reliable support and convenient operating conditions for the fixed connection of the locking member 4141. In this application, the positioning structure is not further limited.

[0049] In one embodiment, the bottom of the first base 41 is provided with a plurality of first limiting portions 415, and the first limiting portions 415 are provided with first limiting grooves 4151. The top of the housing 1 is provided with a plurality of second limiting portions 12, and the second limiting portions 12 are adapted to be snapped and fixed in the first limiting grooves 4151.

[0050] In this embodiment, the precise positioning and stable connection between the first seat 41 and the housing 1 are achieved through the snap-fit ​​cooperation of the first limiting part 415 and the second limiting part 12.

[0051] Specifically, the cooperative design of the first limiting groove 4151 and the second limiting part 12 ensures that the first seat 41 can be accurately aligned with the housing 1 during assembly, avoiding shaking or misalignment caused by assembly errors and improving the overall assembly accuracy of the product. Through the snap-fit ​​fixing method, the connection between the first seat 41 and the housing 1 is more robust, effectively resisting vibrations and impacts generated during the use of the shaver, enhancing the stability and reliability of the product. It is worth noting that the snap-fit ​​cooperation of the first limiting part 415 and the second limiting part 12 not only provides lateral limiting but also further enhances longitudinal stability through the depth and shape design of the limiting groove, making the entire positioning frame 4 more tightly integrated with the housing 1.

[0052] In another modified embodiment, the bottom of the first base 41 is provided with a plurality of third limiting parts 416, and the top of the housing 1 is provided with a plurality of fourth limiting parts 13. The fourth limiting parts 13 are provided with second limiting grooves 131, and the third limiting parts 416 are adapted to be snapped and fixed in the second limiting grooves 131.

[0053] In this embodiment, the cooperation between the third limiting part 416 and the second limiting groove 131 provides clear guidance and positioning for the assembly of the first base 41 and the housing 1. During the assembly process, the third limiting part 416 can be quickly inserted into the second limiting groove 131 of the corresponding fourth limiting part 13, ensuring that the relative positions of the two are accurate, thereby greatly simplifying the assembly steps and improving the assembly efficiency.

[0054] In another modified embodiment, a plurality of first locking blocks 417 are provided on the outer wall of the first base 41, and a second locking block 14 is provided at the inner edge of the housing 1. The first locking blocks 417 are adapted to be locked and fixed to the inner side of the second locking block 14. Specifically, the first locking blocks 417 are located on the left and right sides of the latching groove 418, and the first locking blocks 417 are adapted to abut against the inclined surface of the second locking block 14, so that the second locking block 14 is adapted to drive the first locking blocks 417 to press the elastic member 4183 inward. The specific structure is not further described here.

[0055] It should be noted that the above embodiments can be freely combined as needed. The above are merely preferred embodiments of this utility model. It should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A razor, characterized in that, The device includes a housing, a cutter head assembly, a transmission assembly, and a positioning frame. The transmission assembly is disposed inside the housing and is adapted to drive the cutter head assembly. The positioning frame includes a first base and a second base. The first base is disposed on the top of the housing and has a plurality of first through holes. The second base is integrally formed with the first base and is located opposite to the top of the first through holes of the first base. The second base has a second through hole. The transmission assembly is adapted to pass through the first through holes and the second through holes and then connect to the cutter head assembly.

2. The razor according to claim 1, characterized in that, The first seat is made of rigid plastic, and the second seat is made of soft plastic. The first seat and the second seat are integrally formed by a two-color injection molding process.

3. A razor according to claim 1, characterized in that, The first base has a first mounting part on its top, a first mounting groove on its first mounting part, a first through hole at the bottom of the first mounting groove, and the second base is abutted and installed in the first mounting groove, with the second through hole communicating with the first through hole.

4. A razor according to claim 3, characterized in that, The bottom of the first mounting groove is further provided with a second mounting groove, and the bottom of the second base is further provided with a second mounting part, which is installed in the second mounting groove.

5. A razor according to claim 1, characterized in that, The positioning frame sidewall is also provided with several snap-fit ​​grooves. The snap-fit ​​groove wall is provided with an abutment part. The snap-fit ​​groove is provided with a snap-fit ​​element and an elastic element. The snap-fit ​​element is adapted to abut against the abutment part and the snap-fit ​​element is at least partially adapted to extend out of the snap-fit ​​groove and snap-fit ​​and fix to the cutter head assembly. The elastic element elastically connects the snap-fit ​​element and the bottom of the snap-fit ​​groove.

6. A razor according to claim 1, characterized in that, The first base is provided with a first fixing post at the bottom, and the housing is provided with a second fixing post at the top. The locking member is adapted to fix the first fixing post and the second fixing post, so that the first base and the housing are fixedly connected.

7. A razor according to claim 6, characterized in that, The bottom of the first fixing post is provided with a first fixing groove, and the top of the second fixing post is adapted to be inserted into the first fixing groove.

8. A razor according to claim 6, characterized in that, The bottom of the first seat is provided with a plurality of first limiting parts, and the first limiting parts are provided with first limiting grooves. The top of the housing is provided with a plurality of second limiting parts, and the second limiting parts are adapted to be snapped and fixed in the first limiting grooves.

9. A razor according to claim 6, characterized in that, The bottom of the first seat is provided with several third limiting parts, and the top of the housing is provided with several fourth limiting parts. The fourth limiting parts are provided with second limiting grooves, and the third limiting parts are adapted to be snapped and fixed in the second limiting grooves.

10. A razor according to claim 6, characterized in that, The outer wall of the first seat is also provided with a plurality of first snap-fit ​​blocks, and the inner edge of the housing is also provided with a second snap-fit ​​block. The first snap-fit ​​blocks are adapted to snap-fit ​​and fix to the inner side of the second snap-fit ​​block.