Shaving device with retractable cutter head

Abstract

The present invention discloses a shaving device with a retractable cutter head, which includes a bracket and a rotary shaving head hinged to the bracket. The rotary shaving head can be flipped relative to the bracket within a large angular range, and the rotary shaving head can be maintained at two extreme positions of flipping, respectively for outward expansion or inward retraction. The rotary shaving head of the present invention can be flipped and floated within a large angular range, and can be maintained at two positions of expansion or retraction under the action of an elastic member. When expanded, it shaves, and when retracted, it is stored, avoiding damage to the rotary shaving head and facilitating storage and carrying; the shaving surface of the rotary shaving head also has a larger movement range, which can better fit the skin, thereby improving the shaving effect.

Description

Technical Field

[0001] The present invention relates to the field of personal care small household appliances, and particularly to a shaving device with a retractable cutter head. Background Art

[0002] The rotary electric shavers on the market generally consist of two parts: a head and a body. The diameter of the body is sized for comfortable hand - holding, while the head is relatively large. The shape of such a shaver is irregular, making it inconvenient to carry. Moreover, the cutter net is exposed and easily damaged. Some products of certain brands are equipped with a special outer cover to protect the cutter net, but the outer cover also has the disadvantage of being easily lost.

[0003] Patent document CN111775185A discloses an electric shaver with a retractable cutter head. The cutter head assembly moves along the height direction of the housing under the action of a driving device along with a supporting member, so as to be retracted into the housing. After the cutter head is retracted into the housing, the cutter net is protected, and the overall size of the shaver becomes smaller, thus being convenient to carry. The disadvantage of this structure is that it is complex. In addition to its own power and rotating device, the cutter head also needs to be provided with an additional retracting driving device. There are many components, the overall structure of the shaver is not concise enough, and it is also prone to failure.

[0004] In addition, rotary electric shavers mostly adopt a floating cutter head structure to enable the cutter net to fit the skin. However, the movement range of the floating cutter head is limited by its structure, and accordingly, its shaving effect is also affected. Summary of the Invention

[0005] In order to achieve the retraction of the cutter head of a rotary electric shaver and simultaneously improve its shaving performance, the present invention provides a shaving device with a retractable cutter head.

[0006] The technical solution adopted by the present invention is as follows: A shaving device with a retractable cutter head, comprising a bracket and a rotary shaving head hinged to the bracket. The rotary shaving head can be flipped within a large - angle range relative to the bracket, and the rotary shaving head can be maintained at two extreme positions of flipping, respectively used for outward expansion or inward retraction.

[0007] Preferably, the flipping angle range of the rotary shaving head is 0 - 120°.

[0008] Preferably, the rotary shaving head is equipped with an elastic member, and the elastic force of the elastic member causes the rotary shaving head to tend to be maintained at one of the two extreme positions of flipping.

[0009] Preferably, at least two rotary shaving heads are evenly arranged around the axis of the bracket.

[0010] Preferably, the rotary shaving head is hinged to the bracket through a rotating shaft; the rotating shaft is eccentrically arranged relative to the axis of the shaving head and is closer to the axis of the bracket.

[0011] Preferably, the bracket has at least two support arms, and a storage bin for accommodating the rotary shaving head is formed between adjacent support arms, and both ends of the rotating shaft are suspended on the support arms.

[0012] Preferably, when the rotary shaving head is in the unfolded position, the axis of the rotary shaving head is approximately parallel to the axis of the bracket; when the rotary shaving head is in the folded position, the axis of the rotary shaving head is approximately perpendicular to the axis of the bracket.

[0013] Preferably, the elastic member is a support spring piece, one end of which is hinged to the housing of the rotary shaving head through a first hinge shaft, and the other end is hinged to the bracket through a second hinge shaft; when the first hinge shaft is on the straight line between the rotating shaft and the second hinge shaft, the elastic force of the elastic member on the housing is the largest.

[0014] Preferably, the bracket is provided with a slot, a connecting piece is inserted into the slot, and the second hinge shaft is installed on the connecting piece.

[0015] The present invention has the following beneficial effects: The rotary shaving head of the present invention can flip and float within a large angle range, and can be maintained at two positions of unfolding or folding under the action of the elastic member. When unfolded, it shaves, and when folded, it is stored, avoiding damage to the rotary shaving head and facilitating storage and carrying; the shaving surface of the rotary shaving head also has a larger movement range, can better fit the skin, and thus improves the shaving effect. Description of the Drawings

[0016] Figure 1 is a schematic diagram of the rotary shaving head in the inward folding position in the embodiment of the present invention.

[0017] Figure 2 is a schematic diagram of the rotary shaving head in the inward folding position in the embodiment of the present invention (the front cover is omitted).

[0018] Figure 3 is a schematic diagram of the rotary shaving head in the outward unfolding position in the embodiment of the present invention (the front cover is omitted).

[0019] Figure 4 is a schematic layout diagram of the rotary shaving head in the embodiment of the present invention.

[0020] Figure 5 is a schematic diagram of the bracket in the embodiment of the present invention.

[0021] Figure 6 is a schematic diagram of the housing in the embodiment of the present invention.

[0022] Figure 7 This is a schematic cross-sectional view of the rotary shaving head in the outwardly deployed position in an embodiment of the present invention.

[0023] Figure 8 This is a schematic cross-sectional view of the rotary shaving head in the intermediate position in an embodiment of the present invention.

[0024] Figure 9 This is a schematic cross-sectional view of the rotary shaving head in the inwardly retracted position in an embodiment of the present invention.

[0025] In the figure, there are bracket 1, body 2, rotary shaving head 3, front cover 4, support arm 101, storage bin 102, slot 103, connecting piece 104, cutter net 301, moving cutter 302, housing 303, rotating shaft 304, elastic member 305, first hinge shaft 306, second hinge shaft 307, driven gear 308, driving gear 309, notch 310. Detailed implementation manners

[0026] The present invention will be further described below in conjunction with embodiments and the accompanying drawings.

[0027] As Figures 1 - 9 shown, this embodiment is a rotary shaver with three cutter heads, which is composed of a bracket 1, a body 2, a front cover 4 and three rotary shaving heads 3. Among them, the interior of the body 2 is used to install a power source, a motor and other electrical components, and the housing of the body 2 serves as a grip; the bracket 1 is installed at the front end of the body 2 and serves as an installation connecting member for the rotary shaving head 3; the front cover 4 and the body 2 have a columnar outer shape with the same cross-section. The main feature of this embodiment is that the rotary shaving head 3 is a structure that can be flipped within a relatively large angle range, and the flipping angle range is 0 - 120°, which is much larger than the flipping angle of about 20° in traditional rotary shavers such as in the patent document CN100575009C. Based on the above structure, the rotary shaving head 3 has a first position ( Figure 3 , Figure 7 ) that expands outward relative to the center of the bracket 1 for shaving, and a second position ( Figure 2 , Figure 9 ) that retracts inward relative to the center of the bracket 1 for storage. When the rotary shaving head is in the first position, the axis line of the rotary shaving head 3 is approximately parallel to the axis line of the bracket 1, but there may also be a small angle of 3 - 10° between the two, that is, the side of the rotary shaving head 3 far from the bracket 1 is more upturned than the side close to the bracket 1; when the rotary shaving head 3 is in the second position, the axis line of the rotary shaving head 3 is approximately perpendicular to the axis line of the bracket 1, and it is advisable that the rotary shaving head 3 is retracted as much as possible.

[0028] When not in use, the rotary shaving head 3 can be retracted, which can reduce the radial size of the razor. After installing the front cover 4, the rotary shaving head 3 can be protected. The overall shape of the razor is a regular and compact columnar structure, achieving the purpose of portability and preventing damage. Moreover, the shaving surface of the rotary shaving head 3 also has a larger range of movement, which can better fit the skin, thereby improving the shaving effect.

[0029] As Figure 2 , 3 , as shown in Figure 5, the bracket 1 is connected to the front end of the body 2 and has three support arms 101 arranged in a Y shape. The rotary shaving head 3 is installed on two adjacent support arms 101, and a storage bin 102 for accommodating the rotary shaving head 3 is formed between the adjacent support arms 101. In this embodiment, the number of support arms 101 and storage bins 102 is the same as that of the rotary shaving head 3, and the number is generally set between 2 and 4.

[0030] As Figures 6 - 9 shown, the rotary shaving head 3 is an integral component, which is composed of a cutter net 301, a moving blade 302, a housing 303, a rotating shaft 304 and an elastic member 305. The cutter net 301 is installed on the housing 303 to form a shaving surface in contact with the skin. The moving blade 302 is installed in the housing 303 and is driven to rotate by a power device in the body 2. The housing 303 is suspended on the support arm 101 by the rotating shaft 304, so the rotary shaving head 3 can rotate around the rotating shaft 304. The elastic member 305 is a support spring piece, one end of which is hinged to the housing 303 through a first hinge shaft 306, and the other end is hinged to the bracket 1 through a second hinge shaft 307; when the first hinge shaft 306 is located on the straight line between the rotating shaft 304 and the second hinge shaft 307, the elastic force of the elastic member 305 on the housing 303 is the largest ( Figure 8 ). In this structure, the rotary shaving head 3 can be stably maintained in the first position ( Figure 3 , Figure 7 ) or the second position ( Figure 2 , Figure 9 ) through only one component, the elastic member 305, and the structure is simple; moreover, by pressing the rotary shaving head 3 with a finger to rotate it past the intermediate state ( Figure 8 ), the switching between the first position and the second position can be completed, and the operation is convenient. The rotary shaving head 3 of this embodiment has few parts and a simple structure, and is an integral structure independent of the bracket 1, so it is convenient to assemble and the structure is reliable.

[0031] As Figures 6 - 9 shown, the rotating shaft 304 is eccentrically arranged relative to the axis of the rotary shaving head 3 and is closer to the center of the bracket 1. This structure has two advantages. One is that the rotary shaving head 3 can be accommodated in a smaller space, and the other is that under the action of the elastic member 305, the rotary shaving head 3 can better fit the skin, and the shaving effect is better. In addition, as Figure 6As shown, the rotating shaft 304 and the housing 303 are integrated, simplifying the assembly between parts and making the structure more concise.

[0032] As Figures 7 - 9 shown, the rotary shaving head 3 further includes a driven gear 308, which is installed in the housing 303 and is linked with the moving blade 302. A driving gear 309 is arranged at the central position of the bracket 1 and is the power output wheel of the power device in the body 2; the housing 303 is provided with a notch 310, and the driving gear 309 and the driven gear 308 are meshed at the notch 310. In this structure, the driving gear 309 drives three driven gears 308 to rotate simultaneously, the transmission structure is simple, and it is beneficial to realize the flipping of the rotary shaving head 3.

[0033] As Figure 6 shown, the bracket 1 is provided with a slot 103, in which a connecting piece 104 is inserted, and the second hinge shaft 307 is installed on the connecting piece 104. Several inserting teeth are formed at the lower end of the connecting piece 104, and the slot 103 and the inserting teeth are matched in shape and are tightly fitted. Mounting holes are formed by bending the two sides of the upper end of the connecting piece 104 for installing the second hinge shaft 307, and the left and right end faces of the slot 103 also play a limiting role on the second hinge shaft 307. This structure has the advantages of few components, convenient assembly, reliable structure and not easy to loosen.

[0034] Obviously, the above-mentioned embodiments of the present invention are only examples for explaining the present invention, and are not intended to limit the implementation manners of the present invention. Other obvious changes or variations derived from the essential spirit of the present invention still fall within the protection scope of the present invention.

Claims

1. A shaving device with a retractable cutter head, comprising a bracket (1) and a rotary shaving head (3) hinged to the bracket (1), characterized in that: The rotary shaving head (3) can be flipped relative to the bracket (1) within a large angular range, and the rotary shaving head (3) can be maintained at two extreme flipping positions, which are respectively used for outward expansion or inward retraction; The rotary shaving head (3) is equipped with an elastic member (305), and the elastic member (305) has a switchable first elastic state and second elastic state, which respectively cause the rotary shaving head (3) to tend to be maintained at one of the two extreme flipping positions.

2. The shaving device with a retractable cutter head according to claim 1, characterized in that: The flipping angular range of the rotary shaving head (3) is 0 - 120°.

3. The shaving device with a retractable cutter head according to claim 1, characterized in that: At least two of the rotary shaving heads (3) are evenly arranged around the axis of the bracket (1).

4. The shaving device with a retractable cutter head according to claim 3, characterized in that: The rotary shaving head (3) is hinged to the bracket (1) through a rotating shaft (304); the rotating shaft (304) is eccentrically arranged relative to the axis of the shaving head (3) and is closer to the axis of the bracket (1).

5. The shaving device with a retractable cutter head according to claim 4, wherein: The bracket (1) has at least two support arms (101), and a storage bin (102) for accommodating the rotary shaving head (3) is formed between adjacent support arms (101), and both ends of the rotating shaft (304) are suspended on the support arms (101).

6. The shaving device with a retractable cutter head according to claim 4, characterized in that: When the rotary shaving head (3) is in the deployed position, the axis of the rotary shaving head (3) is approximately parallel to the axis of the bracket (1); when the rotary shaving head (3) is in the retracted position, the rotary shaving head (3) faces outward and the axis is approximately perpendicular to the axis of the bracket (1).

7. The shaving device with a retractable cutter head according to claim 4, characterized in that, The elastic member (305) is a support spring plate, one end of which is hinged to the housing (303) of the rotary shaving head (3) through a first hinge shaft (306), and the other end is hinged to the bracket (1) through a second hinge shaft (307); when the first hinge shaft (306) is on the straight line between the rotating shaft (304) and the second hinge shaft (307), the elastic force of the elastic member (305) on the housing (303) is the largest.

8. The shaving device with a retractable cutter head according to claim 7, characterized in that, The bracket (1) is provided with a slot (103), a connecting piece (104) is inserted into the slot (103), and the second hinge shaft (307) is installed on the connecting piece (104).

Images