Tool bit module, tool bit device and hair trimmer

Abstract

The utility model relates to a tool bit module, a tool bit device and a hair trimmer. The tool bit module is used for the hair trimmer, the hair trimmer comprises a body, the body comprises a shell, a transmission rod and a sealing piece, the transmission rod penetrates out of a through hole of the shell to be connected with the tool bit module, and the sealing piece surrounds the periphery of the transmission rod and seals the through hole; the cutter head module comprises a static cutter assembly and a movable cutter assembly, the static cutter assembly comprises a static cutter and a static cutter frame, the static cutter frame comprises frame bodies and a connecting piece, the two frame bodies are fixedly connected with the two opposite ends of the static cutter, the connecting piece is connected with the two frame bodies, and the connecting piece is arranged on one side of the static cutter; the movable cutter assembly is arranged in the static cutter assembly and can move in the preset direction relative to the static cutter assembly, the movable cutter assembly comprises a movable cutter frame and a movable cutter, the movable cutter frame is connected with the transmission rod, and the outer side face of the movable cutter is attached to the inner side face of the static cutter. The non-sharp surface structure is at least formed at the end, close to the transmission rod, of the connecting piece in the preset direction. The tool bit module and the hair trimmer are long in service life.

Description

Technical Field

[0001] This application relates to the field of hair trimming technology, specifically to a blade module, a blade device, and a hair trimmer. Background Technology

[0002] Common hair trimmers consist of a moving blade and a stationary blade that fit together. A drive mechanism moves the moving blade back and forth relative to the stationary blade to cut and trim the hair. A seal is located around the drive rod of the drive mechanism. This seal elastically deforms with the movement of the drive rod to seal the through-hole, preventing moisture from entering the hair trimmer. However, after a period of use or in extreme environments, the seal may bulge towards the stationary blade, increasing the risk of it being punctured and shortening the lifespan of the hair trimmer. Utility Model Content

[0003] In view of this, this application provides a blade module, a blade device, and a hair trimmer. The blade module can prevent the connector from cutting the seal and has good performance and long service life.

[0004] This application provides a blade head module applied to a hair trimmer. The hair trimmer further includes a main body, which comprises a housing, a transmission rod, and a seal. The transmission rod extends through a through hole in the housing to connect with the blade head module. The seal surrounds the outer periphery of the transmission rod and seals the through hole. The blade head module includes a stationary blade assembly and a moving blade assembly. The stationary blade assembly includes a stationary blade and a stationary blade holder. The stationary blade holder includes two frames and a connecting member. The two frames are respectively fixedly connected to opposite ends of the stationary blade. The connecting member... Two frames are connected to opposite ends respectively. The connector is located on the side of the stationary knife near the seal. The moving knife assembly is located inside the stationary knife assembly and can reciprocate relative to the stationary knife assembly in a preset direction. The moving knife assembly includes a moving knife holder and a moving knife fixed to the moving knife holder. The moving knife holder is used to connect the transmission rod. The outer side of the moving knife is fitted against the inner side of the stationary knife. The connector has a non-sharp surface structure, which is formed at least at the end of the connector near the transmission rod along the preset direction.

[0005] Furthermore, along the arrangement direction of the cutter head module and the main body, the minimum distance L1 between the connector and the seal meets the range: 0.8mm≤L1≤5mm.

[0006] Furthermore, the non-sharp surface structure is an arc-shaped structure.

[0007] Furthermore, the connector satisfies at least one of the following conditions: the connector includes a first flat portion and two arc-shaped portions, the two arc-shaped portions being respectively disposed at two opposite ends of the first flat portion along the preset direction, the arc-shaped portions constituting the arc-shaped structure; the connector includes a first flat portion and two arc-shaped folds, the two arc-shaped folds being respectively disposed at two opposite ends of the first flat portion along the preset direction, the arc-shaped folds constituting the arc-shaped structure.

[0008] Furthermore, when the connector includes the first flattening part and two arc-shaped folds, the arc-shaped folds include connected arc-shaped bending parts and the second flattening part. The arc-shaped bending parts are connected to the end of the first flattening part. The second flattening part is located closer to the moving blade assembly than the first flattening part. The length L2 of the second flattening part satisfies the range: 0.4mm≤L2≤0.8mm.

[0009] Furthermore, the cutter head module also includes an elastic element. The connecting member has a first guide post on the side facing the stationary cutter, and the moving cutter holder has a second guide post. One end of the elastic element is sleeved on the first guide post, and the other end of the elastic element is sleeved on the second guide post. The elastic element is in a compressed state so that the moving cutter fits against the stationary cutter.

[0010] Furthermore, the cutter head module satisfies at least one of the following conditions: the distance L3 between the second flattening part and the elastic element satisfies the range: 0.2mm≤L3≤1mm; the length h1 of the first guide post satisfies the range: 1mm≤h1≤2.5mm; the length h2 of the second guide post satisfies the range: 1mm≤h2≤2.5mm.

[0011] Furthermore, the stationary blade includes an arc-shaped mesh portion and two mounting portions. The arc-shaped mesh portion has multiple mesh holes. The two mounting portions are located at opposite ends of the arc-shaped mesh portion. The connecting member is located on the side of the moving blade assembly away from the arc-shaped mesh portion. The frame includes a first clamping member and a second clamping member. The first clamping member and the second clamping member are respectively located on two opposite surfaces of the mounting portion to clamp the mounting portion, and the first clamping member is located closer to the moving blade assembly. The connecting member includes a connecting portion and two welding portions. The connecting portion has the arc-shaped structure and the first guide post. The two welding portions are located on opposite sides of the connecting portion, and the welding portions are welded to the second clamping member.

[0012] Furthermore, the second clamping member includes a clamping portion and an extension portion. The clamping portion is disposed on the surface of the mounting portion opposite to the first clamping member. The extension portion is connected to the side of the clamping portion opposite to the arc-shaped mesh portion. The two welding portions of the connector are respectively welded to the two extension portions of the two second clamping members.

[0013] Furthermore, the connector satisfies at least one of the following conditions: the connecting portion has a clearance hole along its thickness direction, the clearance hole being disposed on at least one side of the welded portion; the connecting portion has a positioning hole, the positioning hole penetrating two opposing surfaces of the connecting portion along its thickness direction, the positioning hole being used for positioning tools.

[0014] Furthermore, the thickness d of the connector is in the range of 0.2mm≤d≤1mm.

[0015] This application provides a cutting head device, which includes a cutting head housing assembly and a cutting head module provided in this application, wherein the cutting head module is disposed within the cutting head housing assembly.

[0016] This application provides a hair trimmer, which includes the blade head device and the main body provided in this application. The main body includes a housing, a transmission rod and a seal. The transmission rod extends through a through hole in the housing to connect with the blade head module. The seal is disposed around the outer periphery of the transmission rod and seals the through hole.

[0017] In the cutter head module provided in this application, two frames respectively clamp the opposite ends of the stationary cutter, and the opposite ends of the connector are respectively connected to the two frames to install and position the stationary cutter. The connector is positioned close to the seal. After a period of use or under extreme environments such as high temperatures, the seal may expand and bulge away from the main body, thus reducing the distance between the seal and the connector. Furthermore, the motor module provides power to the moving cutter assembly and drives it to reciprocate relative to the stationary cutter assembly in a preset direction via the transmission rod. In other words, when the moving cutter assembly reciprocates in the preset direction, the transmission rod and the seal also reciprocate in the preset direction. Therefore, at the extreme position of the moving cutter assembly in the preset direction, the distance between the connector and the seal in the preset direction is minimized. The connector is provided with a non-sharp surface structure at the end near the transmission rod along the preset direction. The surface of the connector near the transmission rod is relatively smooth, which can prevent the connector from cutting the seal and reduce the probability of the seal being damaged. This ensures the sealing performance of the seal on the through hole and prevents moisture from entering the main body. This improves the performance of the blade module when used in a hair trimmer and also extends the service life of the seal, the blade module, and the hair trimmer. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the implementation will be briefly introduced below. Obviously, the drawings described below are some implementations of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a cutter head module according to an embodiment of this application;

[0020] Figure 2 This is an exploded view of the cutter head module according to an embodiment of this application;

[0021] Figure 3 This is a schematic diagram of the structure of a hair trimmer according to an embodiment of this application;

[0022] Figure 4 This is an exploded view of a hair trimmer according to an embodiment of this application;

[0023] Figure 5 for Figure 2 Enlarged view of the dashed box in section B;

[0024] Figure 6This is a top view of a cutter head module according to an embodiment of this application;

[0025] Figure 7 for Figure 6 A schematic diagram of the cross-sectional structure along the CC direction;

[0026] Figure 8 for Figure 6 Schematic diagram of the cross-sectional structure in the DD direction;

[0027] Figure 9 This is a schematic diagram of the structure of a static knife according to an embodiment of this application;

[0028] Figure 10 This is a partial structural schematic diagram of a hair trimmer according to an embodiment of this application;

[0029] Figure 11 This is a partial structural schematic diagram of a cutter head module according to an embodiment of this application;

[0030] Figure 12 This is a partial structural schematic diagram of a cutter head module according to another embodiment of this application;

[0031] Figure 13 This is a schematic diagram of the moving tool holder according to an embodiment of this application;

[0032] Figure 14 This is a perspective view of a moving tool holder according to an embodiment of this application;

[0033] Figure 15 This is an exploded structural diagram of a cutter head module according to another embodiment of this application;

[0034] Figure 16 This is a schematic diagram of the structure of the second clamping member according to an embodiment of this application;

[0035] Figure 17 This is a partial structural schematic diagram of a cutter head module according to another embodiment of this application;

[0036] Figure 18 This is a schematic diagram of the cutter head device according to an embodiment of this application;

[0037] Figure 19 This is a schematic diagram of the cutter head device according to another embodiment of this application.

[0038] Explanation of reference numerals in the attached figures:

[0039] 100-Cutter head module, 110-Stationary cutter assembly, 111-Stationary cutter, 1111-Arc-shaped mesh section, 1112-Mounting section, 112-Frame, 1121-First clamping member, 1122-Second clamping member, 1123-Clamping section, 1124-Extension section, 113-Connector, 1131-Arc-shaped structure, 1132-First flattening section, 1133-Arc-shaped section, 1134-Arc-shaped bending section, 1135-Second flattening section, 1136-First guide post, 1137-Connector, 1 138-Welding part, 1139a-Void hole, 1139b-Positioning hole, 1139c-Arc-shaped fold, 115-Stationary blade holder, 120-Moving blade assembly, 121-Moving blade holder, 1211-Second guide post, 122-Moving blade, 130-Elastic element, 140-Decorative cover, 200-Blade head assembly, 210-Blade head housing assembly, 300-Hair trimmer, 310-Main body, 311-Motor module, 3111-Transmission rod, 312-Housing, 3121-Through hole, 313-Sealing element. Detailed Implementation

[0040] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0041] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0042] In this document, references to "embodiment" or "implementation" mean that a particular feature, structure, or characteristic described in connection with an embodiment or implementation may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0043] Common hair trimmers consist of a moving blade and a stationary blade that fit together. A drive mechanism moves the moving blade back and forth relative to the stationary blade to cut and trim the hair. The drive mechanism's transmission rod is surrounded by a seal, typically made of silicone or rubber. This seal elastically deforms with the movement of the transmission rod, sealing the through-hole and preventing moisture from entering the trimmer. However, after a period of use or in extreme environments, the seal may bulge towards the stationary blade, increasing the risk of it being punctured and reducing the trimmer's performance.

[0044] The hair trimmer includes a stationary blade assembly, which includes a stationary blade and a mounting structure for the stationary blade. When the moving blade reciprocates relative to the stationary blade, the seal also reciprocates relative to the stationary blade and the mounting structure for the stationary blade, and the seal bulges towards the stationary blade, so that the seal may be scratched by the stationary blade or the mounting structure for the stationary blade.

[0045] Please see Figures 1 to 8 This application provides a blade module 100, which is applied to a hair trimmer 300. The hair trimmer 300 further includes a main body 310, which includes a housing 312, a transmission rod 3111, and a sealing member 313. The transmission rod 3111 extends through a through hole 3121 in the housing 312 to connect with the blade module 100. The sealing member 313 is disposed around the outer periphery of the transmission rod 3111 and seals the through hole 3121. The blade module 100 includes a stationary blade assembly 110 and a moving blade. Component 120, the stationary blade assembly 110 includes a stationary blade 111 and a stationary blade holder 115. The stationary blade holder 115 includes two frame bodies 112 and a connector 113. The two frame bodies 112 are respectively fixedly connected to opposite ends of the stationary blade 111. The opposite ends of the connector 113 are respectively connected to the two frame bodies 112. The connector 113 is located on the side of the stationary blade 111 near the seal 313. The moving blade assembly 120 is located within the stationary blade assembly 110 and can move relative to the stationary blade assembly 110 in a preset direction (e.g., Figure 1 (As shown in the X direction) reciprocating motion; the moving blade assembly 120 includes a moving blade holder 121 and a moving blade 122 fixed to the moving blade holder 121. The moving blade holder 121 is used to connect the transmission rod 3111. The outer side of the moving blade 122 is disposed in contact with the inner side of the stationary blade 111. The connecting member 113 has a non-sharp surface structure. The non-sharp surface structure is formed at least at the end of the connecting member 113 near the transmission rod 3111 along the preset direction.

[0046] Understandably, the cutter head module 100 is disposed on one side of the main body 310, and the moving cutter assembly 120 of the cutter head module 100 is connected to the transmission rod 3111.

[0047] Understandably, the hair trimmer 300 also includes a motor module 311, which is disposed within the housing 312. The motor module 311 includes a transmission rod 3111, which is connected to the moving blade holder 121 of the moving blade assembly 120. The motor module 311 provides power to the moving blade assembly 120, which reciprocates relative to the stationary blade assembly 110 under the drive of the transmission rod 3111.

[0048] Understandably, the sealing element 313 surrounds the outer periphery of the transmission rod 3111 and seals the through hole 3121. The sealing element 313 can undergo elastic deformation with the movement of the transmission rod 3111 to improve the sealing performance of the through hole 3121, prevent moisture from entering the body 310, and facilitate the improvement of the performance of the hair trimmer 300 and the extension of its service life.

[0049] Understandably, the two frames 112 are respectively fixedly connected to the opposite ends of the stationary blade 111, and the opposite ends of the connector 113 are respectively connected to the two frames 112. The two frames 112 fix the opposite ends of the stationary blade 111, and the connector 113 limits the relative position of the two frames 112. The stationary blade holder 115 constitutes the mounting structure of the stationary blade 111 for mounting the stationary blade 111.

[0050] Understandably, the outer side of the moving blade 122 is fitted to the inner side of the stationary blade 111. The moving blade assembly 120 is used to cooperate with the stationary blade assembly 110 and can reciprocate relative to the stationary blade assembly 110 in a preset direction. When the blade module 100 is applied to the hair trimmer 300 and used to trim hair, the hair enters from the stationary blade 111 into the gap between the moving blade 122 and the stationary blade 111. The moving blade assembly 120 reciprocates relative to the stationary blade assembly 110 in a preset direction to trim the hair.

[0051] Understandably, the preset direction is the length direction of the cutter head module 100.

[0052] Optionally, in some embodiments, the non-sharp surface structure is formed at one end of the connector 113 near the transmission rod 3111 along the preset direction; in other embodiments, if the length of the connector 113 along the preset direction is too small, or the length of the seal 313 along the preset direction is too large, or the length of the seal 313 along the preset direction is greater than the length of the connector 113 along the preset direction, when the moving blade assembly 120 moves relative to the stationary blade assembly 110 along the preset direction, the two opposite ends of the seal 313 in the preset direction may contact the two opposite ends of the connector 113 along the preset direction, then the non-sharp surface structure is formed at the two opposite ends of the connector 113 along the preset direction.

[0053] In the cutter head module 100 provided in this embodiment, two frames 112 respectively clamp the opposite ends of the stationary cutter 111, and the opposite ends of the connector 113 are respectively connected to the two frames 112 to install and position the stationary cutter 111. The connector 113 is located close to the seal 313. After a period of use or under extreme environments such as high temperatures, the seal 313 may expand and bulge away from the main body 310, thereby reducing the distance between the seal 313 and the connector 113. Furthermore, the motor module 311 is used to provide power to the moving blade assembly 120, and drives the moving blade assembly 120 to reciprocate relative to the stationary blade assembly 110 in a preset direction via the transmission rod 3111. In other words, when the moving blade assembly 120 reciprocates in the preset direction, the transmission rod 3111 and the sealing member 313 also reciprocate in the preset direction. Therefore, when the moving blade assembly 120 is at its limit position in the preset direction, the distance between the connecting member 113 and the sealing member 313 in the preset direction is minimized. The connector 113 is provided with a non-sharp surface structure at its end near the transmission rod 3111 along the preset direction. The surface of the connector 113 near the transmission rod 3111 is relatively smooth, which can prevent the connector 113 from cutting the seal 313, reduce the probability of the seal 313 being damaged, and thus ensure the sealing performance of the seal 313 on the through hole 3121, preventing moisture from entering the main body 310. This improves the performance of the blade module 100 when applied to the hair trimmer 300, and also extends the service life of the seal 313, the blade module 100, and the hair trimmer 300.

[0054] Understandably, the extreme position of the moving blade assembly 120 along the preset direction can be the reciprocating movement of the moving blade assembly 120 relative to the stationary blade assembly 110 in the preset direction for a preset stroke, and the extreme position is the starting position or the ending position of the preset stroke.

[0055] Understandably, the moving blade 122 has an arc-shaped shearing edge, and when the outer side of the moving blade 122 is set to fit against the inner side of the stationary blade 111, the arc-shaped shearing edge can cut the hair.

[0056] Understandably, compared to the scheme where the two opposite ends of the connector 113 along the preset direction are straight or sharp, the non-sharp surface structure of this application has a smooth surface that contacts the seal 313, which can reduce the right-angle edges that directly interact with the seal 313, thereby significantly reducing the risk of damaging the seal 313.

[0057] Please see Figure 9 In some embodiments, the stationary blade 111 includes an arc-shaped mesh portion 1111 and two mounting portions 1112. The arc-shaped mesh portion 1111 has multiple mesh holes. The two mounting portions 1112 are located at opposite ends of the arc-shaped mesh portion 1111. The two frame bodies 112 respectively clamp the two mounting portions 1112. The connector 113 is provided on the side of the moving blade assembly 120 away from the arc-shaped mesh portion 1111.

[0058] Understandably, the arc-shaped mesh portion 1111 and the two mounting portions 1112 form a U-shaped structure.

[0059] Understandably, in the terminology of this application, "multiple" means two or more.

[0060] Understandably, in the illustrations of this application, for the sake of simplifying the schematic diagram, the arc-shaped mesh portion 1111 of the stationary knife 111 is not shown with mesh holes, and should not be construed as the arc-shaped mesh portion 1111 of the stationary knife 111 not having the mesh holes.

[0061] In this embodiment, the stationary blade 111 includes an arc-shaped mesh portion 1111 with multiple mesh openings to allow hair to pass through and enter the gap between the stationary blade 111 and the moving blade 122. Specifically, the outer surface of the moving blade 122 is fitted to the inner surface of the arc-shaped mesh portion 1111. When the moving blade 122 moves relative to the stationary blade assembly 110 in a preset direction, it trims the hair entering the blade head module 100. Two frame bodies 112 respectively clamp two mounting portions 1112, and the two ends of the connector 113 are respectively connected to the two frame bodies 112. The connector 113 is located on the side of the moving blade assembly 120 away from the arc-shaped mesh portion 1111. In other words, the two frame bodies 112, the arc-shaped mesh portion 1111, and the connector 113 enclose a setting space, and the moving blade assembly 120 is located within the setting space. That is, the stationary blade assembly 110 and the moving blade assembly 120 are an integral structure, which can be disassembled or installed as a whole. Specifically, when the blade module 100 is applied to the hair trimmer 300, the stationary blade assembly 110 and the moving blade assembly 120 can be installed on the main body 310 or removed from the main body 310 at the same time, which can avoid exposing the moving blade assembly 120 and causing user cuts, thus improving the safety performance of the blade module 100.

[0062] Please see also Figure 10 In some embodiments, along the arrangement direction of the cutter head module 100 and the main body 310, the minimum distance L1 between the connector 113 and the seal 313 satisfies the range: 0.8mm≤L1≤5mm.

[0063] Specifically, the minimum distance L1 between the connector 113 and the seal 313 can be, but is not limited to, 0.8mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm and 5mm.

[0064] Understandably, the arrangement direction of the blade module 100 and the main body 310 can be the height direction of the hair trimmer 300.

[0065] Understandably, the minimum distance between the connector 113 and the seal 313 defined here is the minimum distance between the connector 113 and the seal 313 under normal use conditions. When the seal 313 deforms and expands, the minimum distance between the connector 113 and the seal 313 will become smaller.

[0066] In this embodiment, along the arrangement direction of the cutter head module 100 and the main body 310, when the minimum distance L1 between the connector 113 and the seal 313 satisfies the range of 0.8mm≤L1≤5mm, the minimum distance between the connector 113 and the seal 313 is within a reasonable range. Under normal use of the seal 313, the connector 113 can be prevented from contacting the seal 313, and the length of the transmission rod 3111 is ensured to be within a reasonable range, so that the transmission rod 3111 can drive the moving cutter assembly 120 to reciprocate stably relative to the stationary cutter assembly 110. When the seal 313 deforms and expands, a certain gap may exist between the connector 113 and the seal 313. If the seal 313 is infinitely close to the connector 113, the arc-shaped structure 1131 of the connector 113 can also reduce the wear on the seal 313, thereby helping to extend the service life of the seal 313, the blade module 100, and the hair trimmer 300. When the minimum distance between the connector 113 and the seal 313 is too large, the transmission rod 3111 becomes too long, which reduces the stability of the moving blade assembly 120 driven by the transmission rod 3111, resulting in a poor hair cutting effect when the blade module 100 is applied to the hair trimmer 300. When the minimum distance between the connector 113 and the seal 313 is too small, when the moving blade assembly 120 reciprocates relative to the stationary blade assembly 110 in a preset direction, the seal 313 may come into contact with the connector 113, thereby increasing the probability of the connector 113 wearing down the seal 313, shortening the service life of the seal 313, the blade module 100, and the hair trimmer 300. Furthermore, if the seal 313 is damaged, it is difficult to prevent moisture from entering the body 310, which may damage the internal structure of the body 310, resulting in poor performance and a short service life when the blade module 100 is used in the hair trimmer 300.

[0067] Optionally, in some embodiments, the non-sharp surface structure is an arc-shaped structure 1131.

[0068] In this embodiment, the non-sharp surface structure is an arc-shaped structure 1131, so that when the moving blade assembly 120 moves relative to the stationary blade assembly 110, the surface of the arc-shaped structure 1131 that contacts the seal 313 is an arc surface. This avoids the connecting member 113 directly cutting the seal 313, which helps to extend the service life of the seal 313. This ensures the sealing effect of the seal 313 on the through hole 3121 of the main body 310, so that when the blade module 100 is applied to the hair trimmer 300, the hair trimmer 300 also has a longer service life.

[0069] Please see also Figure 8 , Figure 11 and Figure 12 In some embodiments, the connector 113 satisfies at least one of the following conditions: In a first embodiment, the connector 113 includes a first flat portion 1132 and two arc-shaped portions 1133, the two arc-shaped portions 1133 being respectively disposed at two opposite ends of the first flat portion 1132 along the preset direction, and the arc-shaped portions 1133 constituting the arc-shaped structure 1131; In a second embodiment, the connector 113 includes a first flat portion 1132 and two arc-shaped folds 1139c, the two arc-shaped folds 1139c being respectively disposed at two opposite ends of the first flat portion 1132 along the preset direction, and the arc-shaped folds 1139c constituting the arc-shaped structure 1131.

[0070] Understandably, in some embodiments, the connector 113 satisfies the structure in the first scheme; in other embodiments, the connector 113 satisfies the structure in the second scheme; in still other embodiments, there are multiple connectors 113, which are arranged at intervals along the preset direction, and each connector 113 is connected to the frame 112 at both ends. Some of the connectors 113 satisfy the structure in the first scheme, and other connectors 113 satisfy the structure in the second scheme.

[0071] In the first embodiment provided in this application, the connector 113 includes a first flat portion 1132 and two arc-shaped portions 1133. The two arc-shaped portions 1133 are respectively disposed at two opposite ends of the first flat portion 1132 along the preset direction. In other words, along the preset direction, one arc-shaped portion 1133, the first flat portion 1132, and the other arc-shaped portion 1133 are sequentially connected, and the arc-shaped portions 1133 constitute the arc-shaped structure 1131. The arc-shaped structure 1131 is formed by chamfering at the two ends of the connector 113 along the preset direction. This processing method is simple and facilitates the manufacture of the connector 113. When the seal 313 touches one of the arc-shaped portions 1133 of the connector 113, the surface of the arc-shaped portion 1133 in contact with the seal 313 is relatively smooth, which can avoid direct wear on the seal 313 and help extend the service life of the seal 313.

[0072] In the second solution provided in this application, one of the arc-shaped folds 1139c, the first flattening part 1132, and the other arc-shaped fold 1139c are connected in sequence. The arc-shaped folds 1139c constitute the arc-shaped structure 1131. The arc-shaped folds 1139c are formed by bending the two ends of the connector 113 along a predetermined direction toward the stationary blade 111. The formation method of the arc-shaped structure 1131 is simple and facilitates the preparation of the connector 113. When the sealing member 313 touches one of the arc-shaped folds 1139c of the connector 113, the surface of the arc-shaped fold 1139c in contact with the sealing member 313 is relatively smooth, which can avoid direct wear on the sealing member 313 and help extend the service life of the sealing member 313.

[0073] Furthermore, the arc-shaped fold 1139c includes a connected arc-shaped bending portion 1134 and a second flattening portion 1135. The arc-shaped bending portion 1134 is connected to the end of the first flattening portion 1132, and the second flattening portion 1135 is disposed closer to the moving blade assembly 120 than the first flattening portion 1132.

[0074] In this embodiment, the second flattening portion 1135 of one arc-shaped fold 1139c, the arc-shaped bending portion 1134 of one arc-shaped fold 1139c, the first flattening portion 1132, the arc-shaped bending portion 1134 of another arc-shaped fold 1139c, and the second flattening portion 1135 of another arc-shaped fold 1139c are sequentially connected. The second flattening portion 1135 is located closer to the moving blade assembly 120 than the first flattening portion 1132. That is, along the arrangement direction of the stationary blade 111 and the moving blade 122, the second flattening portion 1135 and the first flattening portion 1132 are sequentially arranged. The arc-shaped bending portion 1134 constitutes the arc-shaped structure 1131. The second flattening portion 1135 is convenient for clamping during processing, which facilitates the manufacture of the arc-shaped structure 1131. When the seal 313 touches one of the arc-shaped bends 1134 of the connector 113, the surface of the arc-shaped bend 1134 that contacts the seal 313 is relatively smooth, which can avoid direct wear on the seal 313 and help extend the service life of the seal 313.

[0075] In some embodiments, when the connector 113 includes the first flattening portion 1132 and two arc-shaped folds 1139c, the length L2 of the second flattening portion 1135 satisfies the range: 0.4mm≤L2≤0.8mm.

[0076] Specifically, the length L2 of the second flattening part 1135 can be, but is not limited to, 0.4mm, 0.45mm, 0.5mm, 0.55mm, 0.6mm, 0.65mm, 0.7mm, 0.75mm and 0.8mm.

[0077] In this embodiment, when the connector 113 meets the structure in the second scheme, the length of the second flattening part 1135 is within a reasonable range, so that when the two ends of the connector 113 along the preset direction are bent toward the direction close to the stationary tool 111 to form the arc structure 1131, the second flattening part 1135 is easy to clamp during processing, the arc bending part 1134 can form the arc structure 1131, and the second flattening part 1135 is not too long and occupies too much length of the connector 113 in the preset direction, so that the connector 113 is easy to process the arc structure 1131, and the consumables of the connector 113 can be reduced, and the manufacturing cost of the connector 113 can be reduced. When the length of the second flattening portion 1135 is too large, the second flattening portion 1135 occupies too much length of the connector 113 when the two ends of the connector 113 along the preset direction are bent toward the stationary blade 111 to form the arc structure 1131, thus wasting the connector 113 and increasing the material consumption of the connector 113. When the length of the second flattening portion 1135 is too small, the second flattening portion 1135 is not conducive to the clamping of the clamping tool when the two ends of the connector 113 along the preset direction are bent toward the stationary blade 111 to form the arc structure 1131, thus increasing the difficulty of manufacturing the connector 113.

[0078] Please see also Figure 13 In some embodiments, the cutter head module 100 further includes an elastic element 130, the connector 113 has a first guide post 1136 on the side facing the stationary cutter 111, the moving cutter holder 121 has a second guide post 1211, one end of the elastic element 130 is sleeved on the first guide post 1136, and the other end of the elastic element 130 is sleeved on the second guide post 1211. The elastic element 130 is in a compressed state so that the moving cutter 122 is set to fit against the stationary cutter 111.

[0079] Understandably, the opposite ends of the elastic element 130 are respectively sleeved on the outer periphery of the first guide post 1136 and the outer periphery of the second guide post 1211.

[0080] Understandably, the elastic element 130 is a spring.

[0081] In this embodiment, one end of the elastic member 130 is sleeved on the first guide post 1136, and the other end of the elastic member 130 is sleeved on the second guide post 1211. The elastic member 130 is in a compressed state so that the elastic member 130 abuts against the moving blade holder 121 and the connecting member 113 respectively, thereby making the moving blade 122 fit against the stationary blade 111, ensuring the working cooperation between the moving blade 122 and the stationary blade 111 for the hair cutting effect. Furthermore, when the moving blade assembly 120 reciprocates relative to the stationary blade assembly 110 in a preset direction, the second guide post 1211 reciprocates relative to the first guide post 1136 in a preset direction, and the elastic member 130 has a certain elastic deformation capability, so that the opposite ends of the elastic member 130 can still be sleeved on the first guide post 1136 and the second guide post 1211, so that the moving blade 122 is set to fit against the stationary blade 111, thereby ensuring the cutting effect of the blade module 100 on the hair.

[0082] In some embodiments, the distance L3 between the second flattening portion 1135 and the elastic member 130 satisfies the range: 0.2mm≤L3≤1mm.

[0083] Specifically, the value of the distance L3 between the second flattening part 1135 and the elastic member 130 can be, but is not limited to, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm and 1mm.

[0084] In this embodiment, when the distance L3 between the second flattening part 1135 and the elastic member 130 satisfies the range of 0.2mm≤L3≤1mm, the distance between the second flattening part 1135 and the elastic member 130 is within a reasonable range. On the one hand, the length of the second flattening part 1135 is also within a reasonable range, so that when the two ends of the connecting member 113 are bent towards the stationary blade 111 along a preset direction to form the arc-shaped structure 1131, the second flattening part 1135 is easy to clamp during processing, and the arc-shaped bending part 1134 can form the arc-shaped structure 1131. On the other hand, the second flattening part 1135 can avoid interfering with the elastic member 130, and the elastic member 130 can fully exert its function of pressing against the moving blade 122 and the stationary blade 111, thereby ensuring the cutting effect of the blade module 100 on the hair. When the distance between the second flattening part 1135 and the elastic member 130 is too large, the length of the second flattening part 1135 is correspondingly too small. Therefore, when the two ends of the connecting member 113 are bent towards the stationary blade 111 along a predetermined direction to form the arc-shaped structure 1131, the second flattening part 1135 is not conducive to tool clamping, increasing the difficulty of manufacturing the connecting member 113. When the distance between the second flattening part 1135 and the elastic member 130 is too small, the second flattening part 1135 may interfere with the elastic member 130, preventing the elastic member 130 from undergoing elastic deformation or movement. The elastic member 130 cannot function, making it difficult for the moving blade 122 to conform to the stationary blade 111, ultimately affecting the hair-cutting effect of the blade module 100.

[0085] Please see also Figure 14 In some embodiments, the length h1 of the first guide post 1136 satisfies the range: 1mm≤h1≤2.5mm, and / or the length h2 of the second guide post 1211 satisfies the range: 1mm≤h2≤2.5mm.

[0086] Specifically, the length h1 of the first guide post 1136 can be, but is not limited to, 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2mm, 2.1mm, 2.2mm, 2.3mm, 2.4mm, and 2.5mm.

[0087] Specifically, the length h2 of the second guide post 1211 can be, but is not limited to, 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2mm, 2.1mm, 2.2mm, 2.3mm, 2.4mm, and 2.5mm.

[0088] In this embodiment, during the reciprocating movement of the moving blade assembly 120 relative to the stationary blade assembly 110 in a preset direction, the second guide post 1211 reciprocates relative to the first guide post 1136 in the same preset direction. One end of the elastic member 130 sleeved on the second guide post 1211 also moves along with the second guide post 1211, causing the elastic member 130 to deform to a certain extent. This ensures that the moving blade 122 and the stationary blade 111 are pressed together while adapting to changes in the position of the moving blade 122. When the length h1 of the first guide post 1136 is within the range of 1mm ≤ h1 ≤ 2.5mm, the length of the first guide post 1136 is within a reasonable range. On the one hand, this prevents the elastic member 130 from detaching from the first guide post 1136, allowing the first guide post 1136 to guide the position of the first elastic member 130 and to function as abutment against the moving blade 122 and the stationary blade 111. On the other hand, this avoids the first guide post 1136 being too long, which could affect the deformation of the elastic element 130. The elastic element 130 can undergo elastic deformation and press against the moving blade 122 and the stationary blade 111, thereby giving the cutter head module 100 better performance. When the length of the first guide post 1136 is too long, it may affect the deformation of the elastic element 130, thus weakening its effect on pressing against the moving blade 122 and the stationary blade 111. When the length of the first guide post 1136 is too short, the elastic element 130 may detach from it, preventing the moving blade 122 from fitting tightly against the stationary blade 111 and resulting in poor performance of the cutter head module 100.

[0089] Please see also Figure 8 , Figure 15 and Figure 16 In some embodiments, the frame 112 includes a first clamping member 1121 and a second clamping member 1122, which are respectively disposed on two opposite surfaces of the mounting portion 1112, with the first clamping member 1121 being disposed closer to the moving blade assembly 120; the connector 113 includes a connecting portion 1137 and two welding portions 1138, the connecting portion 1137 having the arc-shaped structure 1131 and the first guide post 1136, and the two welding portions 1138 being located on opposite sides of the connecting portion 1137, and the welding portions 1138 being welded to the second clamping member 1122.

[0090] Understandably, the first clamping member 1121 is an inner clamping member, and the second clamping member 1122 is an outer clamping member.

[0091] Understandably, in some embodiments, the connecting portion 1137 includes the first flat portion 1132 and two arc-shaped portions 1133; in another embodiment, the connecting portion 1137 includes the first flat portion 1132, two arc-shaped bending portions 1134 and two second flat portions 1135.

[0092] In this embodiment, the first clamping member 1121 and the second clamping member 1122 cooperate to clamp the mounting part 1112. Furthermore, there are two frames 112, respectively located on opposite sides of the moving blade assembly 120, to clamp the two mounting parts 1112. Further, the two welded portions 1138 of the connecting member 113 are respectively connected to the second clamping member 1122, so that the second clamping member 1122 of one frame 112, the connecting member 113, the second clamping member 1122 of the other frame 112, and the arc-shaped mesh portion 1111 are connected and enclose a setting space, surrounding the outer periphery of the moving blade assembly 120, so that the moving blade assembly 120 is located within the setting space, thereby making the stationary blade assembly 110 and the moving blade assembly 120 an integral structure, allowing for overall disassembly or installation. Furthermore, compared to the solution where the welding part 1138 is directly welded to the mounting part 1112, the welding part 1138 in this embodiment is welded to the second clamping member 1122, which can avoid deformation of the mounting part 1112 during the welding process, thereby avoiding affecting the structure of the arc-shaped mesh part 1111 or the structural stability of the stationary blade assembly 110 disposed on the blade module 100.

[0093] Optionally, the cutter head module 100 further includes a decorative cover 140, and the second clamping member 1122 of the frame 112 of the progress high component is connected to the decorative cover 140.

[0094] In some embodiments, please also refer to Figure 17 The second clamping member 1122 includes a clamping portion 1123 and an extension portion 1124. The clamping portion 1123 is disposed on the surface of the mounting portion 1112 away from the first clamping member 1121. The extension portion 1124 is connected to the side of the clamping portion 1123 away from the arc-shaped mesh portion 1111. The two welding portions 1138 of the connector 113 are respectively connected to the two extension portions 1124 of the two second clamping members 1122.

[0095] Understandably, the extension 1124 protrudes from the surface of the clamping part 1123 away from the surface of the arc-shaped mesh part 1111, the extension 1124 protrudes from the surface of the first clamping member 1121 away from the surface of the arc-shaped mesh part 1111, and the extension 1124 protrudes from the surface of the mounting part 1112 away from the surface of the arc-shaped mesh part 1111.

[0096] In this embodiment, the extension 1124 is connected to the side of the clamping part 1123 away from the arc-shaped mesh part 1111. In other words, the extension 1124 protrudes from the side of the clamping part 1123 away from the arc-shaped mesh part 1111. The two welding parts 1138 of the connector 113 are connected to the extensions 1124 of the two second clamping parts 1122, so that the connector 113 is spaced apart from the clamping part 1123 and the moving tool holder 121, so that there is enough space in the stationary tool assembly 110 to facilitate the setting of the moving tool holder 121 and avoidance of the moving tool holder 121.

[0097] In some embodiments, the connector 113 satisfies at least one of the following conditions: the connecting portion 1137 has a clearance hole 1139a along its thickness direction, the clearance hole 1139a being disposed on at least one side of the welding portion 1138; the connecting portion 1137 has a positioning hole 1139b, the positioning hole 1139b penetrating two opposing surfaces of the connecting portion 1137 along its thickness direction, the positioning hole 1139b being used for positioning tools.

[0098] Understandably, in some embodiments, the connecting portion 1137 has a clearance hole 1139a. In other embodiments, the connecting portion 1137 has a positioning hole 1139b. In still other embodiments, the connecting portion 1137 has both a clearance hole 1139a and a positioning hole 1139b.

[0099] Understandably, the thickness direction of the connecting portion 1137 is the same as the arrangement direction of the arc-shaped mesh portion 1111 of the stationary blade 111 and the moving blade 122.

[0100] In this embodiment, when the welding part 1138 is welded to the second clamping member 1122, the side of the connecting part 1137 is close to the side of the second clamping member 1122. In order to achieve welding between the welding part 1138 and the second clamping member 1122, the connecting part 1137 needs to be avoided to avoid the second clamping member 1122. If a chamfer is made at the connection between the connecting part 1137, the second clamping member 1122, and the welding part 1138, high manufacturing precision is required to ensure a tight fit between the connecting part 1137, the second clamping member 1122, and the welding part 1138. The connecting portion 1137 in this embodiment has a clearance hole 1139a along its thickness direction, and the clearance hole 1139a is provided on at least one side of the welding portion 1138. The clearance hole 1139a replaces the technical solution of chamfering. The clearance hole 1139a is directly provided at the connection of the connecting portion 1137, the second clamping member 1122 and the welding portion 1138 to avoid the second clamping member 1122. Moreover, it does not require high manufacturing precision and can improve the manufacturing performance of the connecting member 113.

[0101] Furthermore, the connecting part 1137 has a positioning hole 1139b, which penetrates two surfaces of the connecting part 1137 along its thickness direction. During the processing of the connector 113, the positioning hole 1139b is used to set a positioning tool to facilitate the processing of the welding part 1138 and the clearance hole 1139a, thereby improving the processing accuracy of the connector 113.

[0102] In some embodiments, the thickness d of the connector 113 is in the range of 0.2mm≤d≤1mm.

[0103] Specifically, the thickness d of the connector 113 can be, but is not limited to, 0.2mm, 0.25mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, and 1mm.

[0104] Understandably, the thickness of the connector 113 is the same as the thickness of the connecting portion 1137, and further, the thickness of the connector 113 is the same as the thickness of the first flattening portion 1132.

[0105] In this embodiment, when the thickness d of the connector 113 satisfies the range of 0.2mm ≤ d ≤ 1mm, the thickness of the connector 113 is within a reasonable range. On the one hand, the connector 113 has good structural strength to support the elastic member 130, allowing the elastic member 130 to press against the moving blade 122 and the stationary blade 111, thereby ensuring the cutting effect of the blade module 100 on the hair. On the other hand, the connector 113 is not too large and occupies too much space in the blade module 100. When the blade module 100 is applied to the hair trimmer 300, it is beneficial to the lightweight and miniaturized design of the hair trimmer 300. When the thickness of the connector 113 is too large, the connector 113 occupies too much space and increases the weight of the blade module 100. When the blade module 100 is applied to the hair trimmer 300, it is not conducive to the lightweight and miniaturized design of the hair trimmer 300. When the thickness of the connector 113 is too small, the structural strength of the connector 113 is too low, making it difficult for the connector 113 to press against the elastic member 130. This weakens the effect of the elastic member 130 pressing against the moving blade 122 and the stationary blade 111, which may reduce the hair trimming effect of the hair trimmer 300 when the blade module 100 is applied to the hair trimmer 300.

[0106] Please see Figure 18 and Figure 19 This application provides a cutting head device 200, which includes a cutting head housing assembly 210 and a cutting head module 100 provided in this application, wherein the cutting head module 100 is disposed within the cutting head housing assembly 210.

[0107] Understandably, in the cutter head device 200, the number of cutter head modules 100 is at least one, and may be, but is not limited to, one, two, three, etc., and at least one of the cutter head modules 100 is disposed within the cutter head housing assembly 210.

[0108] In the blade head device 200 provided in this embodiment, the blade head module 100 is disposed inside the blade head housing assembly 210. The connector 113 of the blade head module 100 has an arc-shaped structure 1131 at its two opposite ends along the preset direction, which can prevent the connector 113 from cutting the seal 313 and reduce the probability of the seal 313 being damaged. This ensures the sealing effect of the seal 313 on the through hole 3121 and prevents moisture from entering the main body 310. The blade head module 100, the blade head device 200, and the hair trimmer 300 all have a long service life.

[0109] Please see also Figures 1 to 19This application provides a hair trimmer 300, which includes a blade head device 200 and a main body 310 provided in this application. The main body 310 includes a housing 312, a transmission rod 3111 and a sealing member 313. The transmission rod 3111 extends through a through hole 3121 in the housing 312 to connect with the blade head module 100. The sealing member 313 is disposed around the outer periphery of the transmission rod 3111 and seals the through hole 3121.

[0110] Understandably, the main body 310 is located on one side of the cutter head device 200, and the transmission rod 3111 of the main body 310 is connected to the moving cutter holder 121 in the cutter head module 100 of the cutter head device 200.

[0111] Understandably, the hair trimmer 300 also includes a motor module 311, which is disposed within the housing 312. The motor module 311 includes a transmission rod 3111, which is connected to the moving blade holder 121 of the moving blade assembly 120. The motor module 311 provides power to the moving blade assembly 120, which reciprocates relative to the stationary blade assembly 110 under the drive of the transmission rod 3111.

[0112] In the hair trimmer 300 provided in this embodiment, the motor module 311 provides power to the moving blade assembly 120 and drives the moving blade assembly 120 to reciprocate relative to the stationary blade assembly 110 in a preset direction via the transmission rod 3111. At the extreme position of the moving blade assembly 120 in the preset direction, the distance between the connecting member 113 and the sealing member 313 in the preset direction is minimized. The connecting member 113 is provided with arc-shaped structures 1131 at its two opposite ends along the preset direction. This prevents the connecting member 113 from cutting the sealing member 313, reducing the probability of damage to the sealing member 313. This ensures the sealing performance of the sealing member 313 to the through hole 3121, preventing moisture from entering the main body 310 and avoiding damage to the internal structure of the main body 310. This improves the usability of the hair trimmer 300 and extends its service life.

[0113] In this application, the terms "embodiment" and "implementation" mean that a specific feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of this application. The appearance of these phrases in various locations throughout the specification does not necessarily refer to the same embodiment, nor are they independent or alternative embodiments mutually exclusive with other embodiments. Those skilled in the art will understand, explicitly and implicitly, that the embodiments described in this application can be combined with other embodiments. Furthermore, it should be understood that the features, structures, or characteristics described in the various embodiments of this application can be arbitrarily combined to form another embodiment that does not depart from the spirit and scope of the technical solution of this application, provided there is no contradiction between them.

[0114] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of this application should not depart from the spirit and scope of the technical solutions of this application.

Claims

1. A tool bit module, characterized in that, The blade module is used in a hair trimmer, which also includes a main body. The main body includes a housing, a transmission rod, and a seal. The transmission rod extends through a through hole in the housing to connect with the blade module. The seal surrounds the outer periphery of the transmission rod and seals the through hole. The blade module includes: A stationary blade assembly, comprising a stationary blade and a stationary blade holder, the stationary blade holder comprising two frames and a connector, the two frames being fixedly connected to opposite ends of the stationary blade, and the connector being connected to the two frames at opposite ends, the connector being located on the side of the stationary blade near the sealing element; and A moving blade assembly is disposed within a stationary blade assembly and is capable of reciprocating relative to the stationary blade assembly in a preset direction. The moving blade assembly includes a moving blade holder and a moving blade fixed to the moving blade holder. The moving blade holder is used to connect the transmission rod, and the outer surface of the moving blade is fitted against the inner surface of the stationary blade. The connector has a non-sharp surface structure, which is formed at least at the end of the connector near the transmission rod along the preset direction.

2. The tool bit module of claim 1, wherein, Along the arrangement direction of the cutter head module and the main body, the minimum distance L1 between the connector and the seal meets the range: 0.8mm≤L1≤5mm.

3. The tool bit module of claim 1, wherein, The non-sharp surface structure is an arc-shaped structure.

4. The tool bit module of claim 3, wherein, The connector satisfies one of the following conditions: The connector includes a first flat part and two arc-shaped parts. The two arc-shaped parts are respectively disposed at two opposite ends of the first flat part along the preset direction, and the arc-shaped parts constitute the arc-shaped structure. The connector includes a first flattening part and two arc-shaped folds. The two arc-shaped folds are respectively located at two opposite ends of the first flattening part along the preset direction, and the arc-shaped folds constitute the arc-shaped structure.

5. The tool bit module of claim 4, wherein, When the connector includes the first flattening part and two arc-shaped folds, the arc-shaped folds include connected arc-shaped bending parts and the second flattening part. The arc-shaped bending parts are connected to the end of the first flattening part. The second flattening part is located closer to the moving blade assembly than the first flattening part. The length L2 of the second flattening part satisfies the range: 0.4mm≤L2≤0.8mm.

6. The tool bit module of claim 5, wherein, The cutter head module also includes an elastic element. The connecting member has a first guide post on the side facing the stationary cutter, and the moving cutter holder has a second guide post. One end of the elastic element is sleeved on the first guide post, and the other end of the elastic element is sleeved on the second guide post. The elastic element is in a compressed state so that the moving cutter fits against the stationary cutter.

7. The tool bit module of claim 6, wherein, The cutter head module satisfies at least one of the following conditions: The distance L3 between the second flattening part and the elastic element satisfies the range: 0.2mm≤L3≤1mm; The length h1 of the first guide post satisfies the range: 1mm ≤ h1 ≤ 2.5mm; The length h2 of the second guide post satisfies the range: 1mm≤h2≤2.5mm.

8. The tool bit module of claim 6, wherein, The stationary blade includes an arc-shaped mesh portion and two mounting portions. The arc-shaped mesh portion has multiple mesh holes. The two mounting portions are located at opposite ends of the arc-shaped mesh portion. The connector is located on the side of the moving blade assembly away from the arc-shaped mesh portion. The frame includes a first clamping member and a second clamping member, which are respectively disposed on two opposite surfaces of the mounting portion to clamp the mounting portion, and the first clamping member is disposed closer to the moving blade assembly. The connector includes a connecting part and two welding parts. The connecting part is provided with the arc-shaped structure and the first guide post. The two welding parts are located on opposite sides of the connecting part, and the welding parts are welded to the second clamping member.

9. The tool bit module of claim 8, wherein, The second clamping member includes a clamping portion and an extension portion. The clamping portion is disposed on the surface of the mounting portion opposite to the first clamping member. The extension portion is connected to the side of the clamping portion opposite to the arc-shaped mesh portion. The two welding portions of the connector are respectively welded to the two extension portions of the two second clamping members.

10. The tool bit module of claim 8, wherein, The connector satisfies at least one of the following conditions: The connecting portion has a clearance hole along its thickness direction, and the clearance hole is provided on at least one side of the welded portion; The connecting part has a positioning hole that penetrates two opposing surfaces of the connecting part along the thickness direction, and the positioning hole is used to be set in a positioning tool.

11. The tool bit module according to any one of claims 1 to 10, characterized in that The thickness d of the connector is in the range of 0.2mm≤d≤1mm.

12. A tool bit assembly comprising: The cutting head assembly includes: The cutter head housing assembly; and The cutter head module according to any one of claims 1 to 11, wherein the cutter head module is disposed within the cutter head housing assembly.

13. A hair trimmer characterized by The hair trimmer includes: The cutting head device according to claim 12; and The main body includes a housing, a transmission rod, and a seal. The transmission rod extends through a through hole in the housing to connect with the cutter head module. The seal is arranged around the outer periphery of the transmission rod and seals the through hole.

Images