Cutter head assembly and shaving equipment with same

Abstract

The utility model discloses a tool bit assembly and shaving equipment with the same. The tool bit assembly comprises a cutting device, the cutting device comprises a center support and a peripheral elastic piece, the center support is provided with a center hole site and a plurality of peripheral hole sites distributed around the center hole site, a center cutter capable of floating up and down is arranged in the center hole site, and rotatable outer cutters are arranged in the peripheral hole sites. The peripheral elastic piece abuts against the outer cutter and is used for resetting the outer cutter to the initial position, the center cutter is provided with a plurality of connecting holes, a first connecting piece is arranged on the side, close to the center cutter, of the outer cutter, and the first connecting piece is connected with the connecting holes and used for achieving linkage between the center cutter and the outer cutter. The linkage structure is arranged on the tool bit assembly, so that the problem of idling of the tool bit is solved, and the shaving effect of the tool bit is improved.

Description

Technical Field

[0001] The present application relates to the field of electric shavers, and in particular to a cutter head assembly and a shaving device having the same. Background Art

[0002] In order to improve shaving efficiency, a plurality of blade heads are usually provided in a razor structure to increase the shaving area per unit time. In order to make the plurality of blade heads fully fit the user's face or other positions to be shaved, the blade heads are often provided in a floating structure.

[0003] In the related prior art, in order to achieve floating installation of multiple cutter heads, a split cutter head bracket structure is usually adopted, that is, each cutter head corresponds to a cutter head frame, and is installed with the cutter head frame located in the center through the cutter head frame. In this structure, since the cutter head frames are assembled structures, floating movement relative to each other is relatively easy to achieve. However, since the floating movement of each cutter head frame is generated by the position where the cutter head surface contacts the facial contour, it often happens that some cutter heads are in an idling state due to not contacting the face, and the actual shaving efficiency is lower than expected. Utility Model Content

[0004] The present application provides a cutter head assembly and a shaving device having the same. A plurality of cutter heads in the cutter head assembly can float in association with each other to achieve full fit to the object to be shaved in different areas.

[0005] According to the first aspect of the present application, a cutter head assembly is provided, comprising a cutting device, wherein the cutting device comprises a central support and a peripheral elastic member, wherein the central support is provided with a central hole and a plurality of peripheral holes distributed around the central hole, wherein a central knife that can float up and down is provided in the central hole, and a rotatable outer knife is provided in the peripheral hole, wherein the peripheral elastic member abuts against the outer knife to reset the outer knife to an initial position, wherein the central knife is provided with a plurality of connecting holes, and a first connecting member is provided on a side of the outer knife close to the central knife, wherein the first connecting member is connected to the connecting hole to realize the linkage between the central knife and the outer knife.

[0006] Furthermore, each of the outer knives is provided with a second connecting member at the same position, one end of the second connecting member is fixedly connected to the outer knife, and the other end extends outward to lean against the adjacent outer knife. The outer knives are linked by being connected end to end through the second connecting member.

[0007] Furthermore, a plurality of sliding grooves are provided at the central hole position on the central bracket, and a plurality of sliding members are provided on the central knife. The sliding members are installed in the sliding grooves to realize the up and down floating of the central knife.

[0008] Furthermore, the central support is provided with a receiving groove between adjacent peripheral holes for receiving the second connecting member.

[0009] Furthermore, the accommodating groove is connected through the adjacent peripheral holes.

[0010] Furthermore, the depth of the accommodating groove is not greater than the thickness of the second connecting member, so that the second connecting member can be completely accommodated in the accommodating groove.

[0011] Furthermore, the central bracket is provided with a plurality of avoidance grooves, the avoidance grooves are connected through the central hole and the peripheral hole, the vertical cross-section of the avoidance groove is U-shaped with the opening facing upward, and the first connecting member is connected to the connecting hole through the avoidance groove.

[0012] Furthermore, the first connecting member is a connecting plate, and a chamfer is provided at one end of the first connecting member close to the center knife.

[0013] According to a second aspect of the present application, there is also provided a shaving device, comprising a handle assembly and a cutter head assembly according to any one of the above embodiments.

[0014] Furthermore, the cutter head assembly also includes a transmission device and a bottom cover, the transmission device includes a box body fixedly arranged relative to the bottom cover, and a gear transmission mechanism installed in the box body, the gear transmission mechanism includes an output shaft extending from the box body toward the cutting device, a top rod installed at the upper end of the output shaft and connected to the tool in the cutting device, and an elastic member connected between the top rod and the output shaft, the elastic member is configured to enable the top rod to float up and down relative to the output shaft.

[0015] The technical solution provided by the embodiments of the present application may have the following beneficial effects:

[0016] The center knife and the adjacent outer knife are connected respectively by the first connecting member and the second connecting member on the outer knife, so that the outer knife and the center knife can move in a connected manner. The movement of any knife can be linked to the other knives to achieve complete fit of different areas to the object being shaved.

[0017] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the exploded structure of a cutter head assembly according to an embodiment of the present application;

[0019] Figure 2 yes Figure 1 A schematic diagram of a partially exploded structure of the cutter head assembly shown in FIG.

[0020] Figure 3 yes Figure 1 The installation diagram of the outer knife and the center knife shown in;

[0021] Figure 4 yes Figure 1 The bottom structure diagram of the outer knife shown in FIG.

[0022] Figure 5 yes Figure 1 Schematic diagram of the exploded structure of the transmission device and the bottom cover shown in ;

[0023] Figure 6 yes Figure 2 Schematic diagram of the structure of the middle and outer elastic parts.

[0024] Reference numerals:

[0025] 200, cutter head assembly; 21, bottom cover; 22, transmission device; 221, box; 2211, upper box; 2212, lower box; 222, gear transmission mechanism; 2221, output shaft; 2222, top rod; 2223, elastic member; 2224, shaft; 2225, tooth portion; 2226, first gear; 2227, second gear; 23, cutting device; 231, center bracket; 2311, center hole; 2 312, peripheral hole position; 2313, shaft connecting piece; 2314, sliding groove; 2315, avoidance groove; 2316, accommodating groove; 232, peripheral elastic piece; 2321, fixing seat; 2322, elastic arm; 233, center knife; 2331, sliding piece; 2332, connecting hole; 234, outer knife; 2341, first connecting piece; 2342, second connecting piece; 2343, shaft connecting hole; 24, center transmission rod. DETAILED DESCRIPTION

[0026] The embodiments of the present application are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the features of the following embodiments can be combined with each other.

[0027] like Figure 1 As shown, the present application discloses a shaving device, including a handle assembly (not shown in the figure) and a cutter head assembly 200, wherein: the cutter head assembly 200 includes a bottom cover 21, a transmission device 22 and a cutting device 23, the cutter head assembly 200 is detachably mounted on the upper end of the handle assembly, and the relevant electrical components in the shaving device are arranged in the handle assembly.

[0028] exist Figure 1 Based on the combination Figure 2As shown, the cutting device 23 includes a central support 231 and a peripheral elastic member 232. The central support 231 is used as a mounting platform for mounting the peripheral elastic member 232, the central knife 233 and the outer knife 234. The central knife 233 is mounted at the central hole 2311 of the central support 231, and the outer knife 234 is rotatably mounted at the peripheral hole 2312 of the central support 231. In order to improve the shaving efficiency, a plurality of outer knives 234 are provided and distributed around the central knife 233.

[0029] like Figure 2 As shown, the outer knife 234 is connected to the shaft hole of the shaft connecting member 2313 on the peripheral hole 2312 through the shaft connecting hole 2343 to achieve the swinging movement of the outer knife 234. Figure 6 As shown, in order to enable the outer knife 234 to realize the reset function, an outer elastic member 232 is arranged on the central bracket 231, and the outer elastic member 232 includes a fixed seat 2321 and an elastic arm 2322. The fixed seat 2321 is fixed to the central bracket 231, and the elastic arm 2322 extends from the fixed seat 2321 to the outer knife 234 until it contacts the outer knife 234, driving the outer knife 234 to move toward the initial position.

[0030] In this embodiment, in order to realize the up and down floating of the center knife 233, a plurality of sliding grooves 2314 are provided on the periphery of the center hole 2311 of the center bracket 231, and a plurality of sliding members 2331 cooperating with the sliding grooves 2314 are provided on the outer side of the center knife 233. The sliding grooves 2314 have a certain vertical height, so that the sliding members 2331 can reciprocate in the vertical direction, thereby allowing the center knife 233 to float up and down in the vertical direction.

[0031] For floating cutter heads, each cutter head moves independently. If the cutter head does not contact the object, it is difficult to wrap the object. In this case, the cutter head is prone to idle rotation, resulting in low shaving efficiency. To solve this problem, this embodiment sets a linkage structure to avoid the above problem. Figure 2 , Figure 3 As shown, a connecting hole 2332 is provided on the periphery of the central blade 233, and a first connecting member 2341 matching with the connecting hole 2332 is provided on the outer blade 234. The central blade 233 and the outer blade 234 are linked by the matching connection of the connecting hole 2332 and the first connecting member 2341. It should be particularly noted that the first mentioned here does not represent any order, quantity or importance, but is only used to distinguish the first connecting member 2341 from the second connecting member 2342.

[0032] like Figure 2As shown, a corresponding avoidance groove 2315 is also provided on the central support 231, and the avoidance groove 2315 serves as a connecting channel between the first connecting member 2341 and the connecting hole 2332, and connects the central hole 2311 and the peripheral hole 2312. The first connecting member 2341 passes through the avoidance groove 2315 and is connected and matched with the connecting hole 2332.

[0033] In order to balance the structural strength of the central support 231 and the rotation angle of the outer knife 234, the avoidance groove 2315 is set to be a U-shaped cross-section with an opening facing upward. In this way, there can be more space on the central support 231 for structural connection, and the first connecting member 2341 can also move beyond the avoidance groove 2315, so that the rotation space of the outer knife 234 is larger and the movement is more flexible.

[0034] In addition, as a connecting structure, the first connecting member 2341 needs to have sufficient connection strength to have a longer service life. For this reason, the first connecting member 2341 is set as a connecting plate. The connecting plate has a certain connection width, which can make the connection surface of the center knife 233 and the outer knife 234 larger, and the connection strength is stronger and more durable. In order to facilitate installation, a chamfer is also provided at the connection end of the connecting member.

[0035] exist Figure 3 Combined with the basis Figure 4 As shown, in order to further enhance the linkage effect of the floating cutter head, each outer cutter 234 is also provided with a second connecting member 2342 at the same position, one end of the second connecting member 2342 is fixed on the outer cutter 234, and the other end extends outward and rests on the adjacent outer cutter 234. Each outer cutter 234 is connected to the adjacent outer cutter 234 via the second connecting member 2342, so that the outer cutters 234 are connected end to end to form a ring, thereby enhancing the linkage effect between the outer cutters 234. At the same time, due to the coordinated use of the first connecting member 2341 and the second connecting member 2342, the overall cutter head movement is smoother and firmer.

[0036] The central support 231 is also provided with a receiving groove 2316, in which the second connecting member 2342 can be placed, and connected to the adjacent outer blades 234 through the receiving groove 2316. In addition, in order to avoid dead angles in the receiving groove 2316 and cause hair accumulation, the receiving groove 2316 is set to be through-connected to connect the adjacent peripheral holes 2312.

[0037] In order to allow the second connecting member 2342 to be completely placed in the receiving groove 2316 without protruding from the outer surface of the central support 231, the depth of the receiving groove 2316 is set to be greater than or equal to the thickness of the second connecting member 2342. If the depth of the receiving groove 2316 is less than the thickness of the second connecting member 2342, the second connecting member 2342 will protrude from the outer surface of the central support 231, which will not only reduce the rotatable angle of the outer knife 234, but also leave a gap between the outer knife 234 and the central support 231, and the overall structure is not compact.

[0038] exist Figure 1 Further combining Figure 5 As shown in the figure, the transmission device 22 includes a box body 221 fixedly arranged relative to the bottom cover 21 and a gear transmission mechanism 222 installed in the box body 221. As mentioned above, the relevant electrical components in the shaving device are arranged in the handle assembly, and the power output from the handle assembly is first transmitted to the gear transmission mechanism 222, and then transmitted to the cutting device 23.

[0039] exist Figure 5 In the illustrated embodiment, the box body 221 includes an upper box body 2211 and a lower box body 2212, which are assembled to form an installation space for installing the gear transmission mechanism 222. The gear transmission mechanism 222 includes an output shaft 2221 extending from the upper box body 2211 toward the cutting device 23, a push rod 2222 installed at the upper end of the output shaft 2221, and an elastic member 2223 connected between the output shaft 2221 and the push rod 2222.

[0040] It can be understood that the output shaft 2221 is used to output power to the cutter in the cutting device 23, so the number of the output shafts 2221 is set corresponding to the number of cutters in the cutting device 23. The top rod 2222 is connected to the cutter in the cutting device 23, and is used to directly or indirectly transmit the power output by the output shaft 2221 to the cutter to drive it to rotate.

[0041] The elastic member 2223 is configured to allow the push rod 2222 to float up and down relative to the output shaft 2221. Figure 5 In the embodiment shown in , the elastic member 2223 is configured as a spring arranged axially along the output shaft 2221, which can be extended and retracted along the axial direction of the output shaft 2221, so that the push rod 2222 can float up and down relative to the output shaft 2221. In this way, when the tool in the cutting device 23 floats in various forms during operation, the push rod 2222 adaptively floats up and down relative to the output shaft 2221, thereby ensuring that the push rod 2222 always maintains a reliable transmission connection with the tool.

[0042] like Figure 5As shown in the figure, the gear transmission mechanism 222 also includes a central gear and a plurality of gear sets. The central gear includes a shaft 2224 that is transmission-connected to the central transmission rod 24, and a tooth portion 2225 disposed at the upper end of the shaft 2224. In the illustrated embodiment, the shaft 2224 and the tooth portion 2225 are an integrally arranged central gear. In other embodiments, the central gear may also be formed by assembling a shaft and a gear.

[0043] Each pair of gear sets includes a first gear 2226 meshing with the toothed portion 2225 and a second gear 2227 meshing with the first gear 2226. The rotational motion from the central transmission rod 24 is first transmitted to the central gear member, causing the toothed portion 2225 thereon to rotate; the rotational motion is transmitted into the gear set through the meshing of the first gear 2226 and the toothed portion 2225; the rotational motion is finally converted into the rotation of the second gear 2227 through the meshing of the second gear 2227 and the first gear 2226, and the plurality of output shafts 2221 are respectively connected to the second gear 2227 or the central gear member to output the rotational motion to the cutting device 23.

Claims

1. A cutter head assembly, comprising a cutting device (23), wherein the cutting device (23) comprises a central support (231) and a peripheral elastic member (232), wherein the central support (231) is provided with a central hole (2311) and a plurality of peripheral holes (2312) distributed around the central hole (2311), wherein the central hole (2311) is provided with a central knife (233) capable of floating up and down, wherein the peripheral hole (2312) is provided with a rotatable outer knife (234), wherein the peripheral elastic member (232) abuts against the outer knife (234) to reset the outer knife (234) to an initial position, wherein: The center knife (233) is provided with a plurality of connecting holes (2332), and the outer knife (234) is provided with a first connecting piece (2341) on one side close to the center knife (233), and the first connecting piece (2341) is connected to the connecting hole (2332) to realize the linkage between the center knife (233) and the outer knife (234).

2. The cutter head assembly according to claim 1, characterized in that: Each of the outer knives (234) is provided with a second connecting member (2342) at the same position, one end of the second connecting member (2342) is fixedly connected to the outer knife (234), and the other end extends outward to lean against the adjacent outer knife (234), and the outer knives (234) are linked together by connecting the second connecting member (2342) end to end.

3. The cutter head assembly according to claim 2, characterized in that: A plurality of sliding grooves (2314) are arranged at the central hole position (2311) on the central support (231), and a plurality of sliding members (2331) are arranged on the central knife (233). The sliding members (2331) are installed in the sliding grooves (2314) to realize the up and down floating of the central knife (233).

4. The cutter head assembly according to claim 2, characterized in that: The central support (231) is provided with a receiving groove (2316) between adjacent peripheral holes (2312) for receiving the second connecting member (2342).

5. The cutter head assembly according to claim 4, characterized in that: The receiving groove (2316) is connected through the adjacent peripheral holes (2312).

6. The cutter head assembly according to claim 4, characterized in that: The depth of the accommodating groove (2316) is no greater than the thickness of the second connecting member (2342), so that the second connecting member (2342) can be completely accommodated in the accommodating groove (2316).

7. The cutter head assembly according to claim 1, characterized in that: The central support (231) is provided with a plurality of avoidance grooves (2315), the avoidance grooves (2315) are connected through the central hole (2311) and the peripheral hole (2312), the vertical cross section of the avoidance grooves (2315) is in a U-shape with the opening facing upward, and the first connecting member (2341) is connected to the connecting hole (2332) through the avoidance grooves (2315).

8. The cutter head assembly according to claim 1, characterized in that: The first connecting member (2341) is a connecting plate, and the first connecting member (2341) is provided with a chamfer at one end close to the center knife (233).

9. A shaving device, characterized in that: It comprises a handle assembly and a cutter head assembly (200) as claimed in any one of claims 1 to 8.

10. The shaving device according to claim 9, characterized in that The cutter head assembly (200) further comprises a transmission device (22) and a bottom cover (21); the transmission device (22) comprises a box body (221) fixedly arranged relative to the bottom cover (21), and a gear transmission mechanism (222) installed in the box body (221); the gear transmission mechanism (222) comprises an output shaft (2221) extending from the box body (221) toward the cutting device (23); a push rod (2222) installed at the upper end of the output shaft (2221) and connected to the cutting tool in the cutting device (23); and an elastic member (2223) connected between the push rod (2222) and the output shaft (2221); the elastic member (2223) is arranged to enable the push rod (2222) to float up and down relative to the output shaft (2221).

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