Shaving razor handle

Abstract

A razor handle is disclosed. According to an embodiment of the present invention, a razor handle for combination with a razor cartridge includes a holder, two first combination portions disposed at least partially in the holder and including a catch portion including a first surface and a second surface, at least a portion of the first surface being disposed in the holder and extending in a direction perpendicular to a direction in which the razor handle is combined with the razor cartridge, the second surface extending obliquely from an end of the extending first surface toward an inside of a front direction, and a disassembly member configured to adjust a distance between the two first combination portions and having a first position in which the distance between the two first combination portions is a first distance and a second position in which the distance between the two first combination portions is a second distance smaller than the first distance.

Description

Technical Field

[0001] This invention relates to razor handles. Background Technology

[0002] The content described in this section is merely for providing background information for this invention and does not constitute prior art.

[0003] Typically, a traditional razor assembly known as a wet razor consists of a razor blade holder and a razor handle.

[0004] The razor blade holder is configured to rotate around the razor handle between a rest position and a pivoting position. The razor blade holder typically rotates around an axis of rotation parallel to the direction in which the razor blades are arranged.

[0005] The razor handle rotates around a pivot axis parallel to the direction in which the razor blades are arranged, ensuring smooth contact between the razor blades and the user's skin, thus facilitating an effective shave.

[0006] To achieve the rotational movement of the razor blade holder as described above, existing razor assemblies use either a rotary connection or a fixed connection. In the rotary connector type, the connector is fixed in position relative to the razor handle and rotatable about a pivot relative to the razor blade holder. In the fixed connector type, the connector is fixed in position relative to the razor blade holder and rotatable about a pivot relative to the razor handle.

[0007] In a rotary connection, the pivot is positioned close to the foremost razor blade, resulting in superior rotary functionality. However, with rotary connections, the blade holder needs to be replaced after a certain period or number of uses, leading to an increase in its size.

[0008] In the fixed connection method, the connector is fixed to the razor blade holder, which has the advantage of a smaller razor blade holder compared to the rotary connection method. However, the fixed connection method involves a rotating function inside the razor handle, resulting in a complex structure for the razor handle and thus a decrease in its durability. Summary of the Invention

[0009] Technical issues

[0010] Therefore, the main objective of this invention is to position the pivot close to the foremost razor blade.

[0011] Furthermore, the main objective of this invention is to provide a razor handle that does not require a separate rotating structure and has high durability.

[0012] The problems to be solved by the present invention are not limited to the above-mentioned technical problems. For those skilled in the art, the following description will clearly explain any other technical problems not mentioned herein.

[0013] Technical solution

[0014] According to an embodiment of the present invention, a razor handle is provided for engagement with a razor blade holder, comprising: a grip; two first engagement portions, at least a portion of which is disposed within the grip and includes a latching portion, the latching portion including a first surface and a second surface, at least a portion of the first surface being disposed within the grip and extending in a direction perpendicular to the direction in which the razor handle is engaged with the razor blade holder; the second surface extending obliquely inward from the end of the extending first surface in a forward direction; and a disassembly / removal component for adjusting the distance between the two first engagement portions, having a first position when the distance between the two first engagement portions is a first distance and a second position when the distance between the two first engagement portions is a second distance less than the first distance.

[0015] Beneficial effects

[0016] As described above, according to this embodiment, the razor handle provides improved rotational functionality while reducing the size of the razor blade holder.

[0017] In addition, the razor handle can be provided with a highly durable joint structure. Attached Figure Description

[0018] Figure 1 This is a perspective view of a razor assembly according to an embodiment of the present invention.

[0019] Figure 2 This is a rear view of a razor assembly according to an embodiment of the present invention.

[0020] Figure 3 This is an exploded perspective view of a razor assembly according to an embodiment of the present invention.

[0021] Figure 4 This is a front view of a razor handle according to an embodiment of the present invention.

[0022] Figure 5 yes Figure 3 A diagram showing the state of the razor blade holder after it has been separated from the razor handle.

[0023] Figure 6This is a rear view of a razor assembly according to an embodiment of the present invention.

[0024] Figure 7 This is a rear view of a razor assembly according to another embodiment of the present invention.

[0025] Figures 8a to 8d This is a diagram illustrating the process of joining and separating the razor blade holder and the razor handle according to an embodiment of the present invention.

[0026] Figure 9a and Figure 9b This is a diagram showing the state of a razor blade holder during rotation according to an embodiment of the present invention. Detailed Implementation

[0027] Hereinafter, some embodiments of the present invention will be described in detail with reference to the accompanying drawings. When labeling the various drawings, the same reference numerals are used as much as possible, even if the same constituent elements appear in different drawings. It should also be noted that throughout this specification, detailed descriptions of known technical features and functions are omitted if it is believed that such detailed descriptions would obscure the subject matter of the present invention.

[0028] In describing this invention, terms such as first, second, i), ii), a), and b) may be used. These terms are merely for distinguishing corresponding constituent elements from other constituent elements and are not intended to limit their nature, order, or sequence. If a constituent element "comprises" or "possesses" another constituent element in the specification, unless otherwise stated, it shall be understood that the constituent element further includes the other constituent element, rather than that the constituent element excludes the other constituent element.

[0029] Figure 1 This is a perspective view of a razor assembly according to an embodiment of the present invention. Figure 2 This is a rear view of a razor assembly according to an embodiment of the present invention. Figure 3 This is an exploded perspective view of a razor assembly according to an embodiment of the present invention. Figure 4 This is a front view of a razor handle according to an embodiment of the present invention. Figure 5 yes Figure 2 This is a diagram showing the razor blade holder after it has been separated from the razor handle. For ease of explanation, Figure 1 The lower gripper 162 is omitted in the text. Figure 2 The upper gripper 161 is omitted in the middle.

[0030] Reference Figures 1 to 5 The razor assembly includes a razor blade holder 12, a connector 130, and a razor handle. The razor blade holder 12 may include at least one razor blade 110 and a blade housing 120.

[0031] At least one razor blade 110 may have a cutting edge 112 for cutting body hair.

[0032] The blade housing 120 can accommodate at least one razor blade 110 placed along its length. Herein, the length direction is the direction parallel to the X-axis, which refers to the direction in which the razor blade 110 extends.

[0033] At least one razor blade 110 is housed on one side of the blade housing 120 and can be maintained by a plurality of clips 125.

[0034] The blade housing 120 may include a top part 121, a bottom part 123, a guard 122, and a cover 124.

[0035] The upper surface 121 can be the surface of the blade housing 120 facing the cutting edge 112, and the lower surface 123 can be the surface of the blade housing 120 facing the upper surface 121.

[0036] On the upper part 121 of the blade housing 120, the blade guard 122 may be located in front of the shaving blade 110, and the cover 124 may be located behind the shaving blade 110. In the razor blade holder 12, the front and rear of the shaving blade are defined based on the shaving direction of the razor blade holder 12.

[0037] The blade guard 122 can stretch the skin in the shaving direction before the shaving blade 110 cuts body hair during the shaving process.

[0038] This allows the user's body hair to stand up perpendicular to the user's skin, making it easier for the razor blade 110 to cut the body hair.

[0039] The connector 130 can be fixed to one side of the blade housing 120. For example, to reinforce the connection between the connector 130 and the razor handle, the connector 130 can be manufactured as a separate component from the blade housing 120 and then installed and fixed to the blade housing 120. In this case, the connector 130 is fixed to the lower part 123 of the blade housing 120, that is, at least a portion of the remaining area other than the area where the razor blade 110 is arranged, and preferably it can be fixed to the front of the razor blade 110.

[0040] Alternatively, the connector 130 may extend from one side of the blade housing 120 and be integrally formed and manufactured with the blade housing 120. Even in this case, the connector 130 is injection-formed on the underside 123 of the blade housing 120, that is, at least a portion of the remaining area other than the area where the razor blade 110 is disposed, preferably in front of the razor blade 110.

[0041] The connector 130 includes a second engagement portion 134 having a third surface 1342 facing the first surface 1462 of the first engagement portion 140, for engaging with the first engagement portion 140 in the razor handle. Furthermore, the second engagement portion 134 also has a receiving portion 136 for receiving at least a portion of the first engagement portion 140. Specifically, the receiving portion 136 forms a recess 1362 for receiving a snap-fit ​​portion 146 of the first engagement portion 140. With the first surface 1462 and the third surface 1342 facing each other, the razor handle and the razor blade holder 12 can be stably engaged.

[0042] The first engagement portion 140 may consist of two parts, and the connector 130 may have an open area for each of the two first engagement portions 140 to enter. The connector 130 may have two second engagement portions 134 corresponding to the two first engagement portions 140. When the connector 130 is engaged with the shaver handle, the two first engagement portions 140 can enter through the open area between the two second engagement portions 134. At this time, the open area may also be provided with the piston guard 1612, which will be described later.

[0043] A fourth surface 1344 may be formed behind the third surface 1342 of the second joint portion 134. The fourth surface 1344 has a predetermined tilt angle relative to an axis perpendicular to the lower surface of the blade housing 120. The predetermined tilt angle may be from 20 degrees to 80 degrees, and is preferably from 40 degrees to 50 degrees.

[0044] When the razor handle enters, a second engagement portion 134 is formed to ensure easy engagement with the razor blade holder 12 regardless of the angle at which it enters, within the rotatable range relative to the razor handle (i.e., a preset angle range). For this purpose, the fourth surface 1344 of the second engagement portion 134 extends from the bottom of the blade housing 120 to the stop surface 132 while having a preset tilt angle relative to an axis perpendicular to the bottom surface of the blade housing 120.

[0045] The closer the cross-section of the fourth face 1344, cut by any virtual plane, is to the underside of the blade housing 120, the closer it is to the center of the connector 130. This virtual plane includes the entry direction of the first engagement portion 140 within a preset angle range and the pivot PA. Therefore, as long as the first engagement portion 140 enters in any direction within the preset angle range, the second face 1464 and the fourth face 1344 can generate a cam-like interaction.

[0046] The connector 130 may include two stop surfaces 132 that extend in a direction generally perpendicular to the underside of the blade housing 120. "Extending in a direction generally perpendicular" means that the stop surfaces 132 do not necessarily form a right angle with the underside of the blade housing 120. For example, the stop surfaces 132 may form an angle of 80 to 110 degrees with the underside of the blade housing 120.

[0047] The stop surface 132 is configured to prevent excessive external force from damaging the two first joints 140 when the razor blade holder 12 rotates around the pivot PA, and to control the range of rotation of the razor handle relative to the razor blade holder 12. The stop surface 132 is not necessarily formed by two as shown in the figure.

[0048] The connector 130 extends downward from at least a portion of the area below the blade housing 120, outside the area where at least one shaving blade 110 is disposed, and can extend in a generally vertical direction. That is, the connector 130 can be positioned where it does not overlap with the cleaning area of ​​the blade housing 120, and is preferably positioned in front of the shaving blade 110. Due to this arrangement, the connector 130 does not obstruct the user's cleaning of the shaving blade 110 with water or the like, providing a stable and effective pivoting effect during shaving.

[0049] The razor handle includes all or part of the following: grips 161 and 162, a first engagement portion 140, a first restoring force providing portion 170, a second restoring force providing portion 180, and a disassembly / removal component 150.

[0050] The grips 161 and 162 are formed by combining an upper grip 161 and a lower grip 162. The grips 161 and 162 have internal spaces. At least a portion of a first connecting part 140, a first restoring force providing part 170, a second restoring force providing part 180, and a disassembly / removal component 150 may be arranged inside the grips 161 and 162. The grips 161 and 162 can be manufactured separately and combined with the razor handle, or they can be integrally formed at the front of the razor handle as part of the razor handle.

[0051] The lower gripper 162 may have an insertion protrusion 164 for a portion of the first coupling 140 to be inserted. While the insertion protrusion 164 is inserted into the insertion groove 142 formed on the rear end of the first coupling 140, the insertion protrusion 164 also acts as an axis during the movement of the first coupling 140. The insertion protrusion 164 may be cylindrical to prevent obstruction of the movement of the first coupling 140. However, it is not limited to this; the shape and arrangement of the insertion protrusion 164 are only required to satisfy the condition that the first coupling 140 can rotate relative to the lower gripper 162 about the axis. For example, the insertion groove 142 may be formed on the lower gripper 162, and the insertion protrusion 164 may be formed on the first coupling 140.

[0052] At least one piston guard 1612 may be formed extending from one side of the upper gripper 161 and disposed on the upper inner side of the two first joints 140. That is, the piston guard 1612 may be formed to be disposed between the two first joints 140 and extending forward from the grippers 161 and 162.

[0053] The piston guard 1612 may extend from one side of the upper gripper 161 and form an integral part, but is not limited thereto. It may also extend from one side of the lower gripper 162, or from both the upper gripper 161 and the lower gripper 162, or be formed by manufacturing the piston guard 1612 at one end and then combining it with the upper gripper 161 or the lower gripper 162.

[0054] At this time, piston guard 1612 as Figure 4 As shown, preferably, the front end edge e1 of the piston guard 1612 does not protrude forward more than the front end edge e2 of the piston 172.

[0055] Alternatively, the front end edge e1 of the piston guard 1612, the front end edge e2 of the piston 172, and the front end edge of the first joint 140 are generally arranged on the same line. Here, "the same line" means a line parallel to the pivot PA.

[0056] A piston 172 with a first restoring force providing part 170 can be arranged between the two piston guards 1612. That is, with the protruding direction of the piston 172 as a reference, the two piston guards 1612 can be arranged on the left and right sides of the piston 172, respectively. The piston 172 is arranged between the two piston guards 1612, thereby protecting the piston 172 from stimulation by external impurities, etc., and guiding the movement direction of the piston 172. Figure 3The middle piston guard 1612 is formed by two parts, symmetrically arranged with reference to the midpoint parallel to the Z-axis of the upper grip 161, but not limited thereto. The piston 172, piston guard 1612 and first engagement portion 140 are all arranged adjacent to each other, forming a unit at the front end of the razor handle. When the razor blade holder 12 and the razor handle are engaged, one unit can simultaneously enter the connector 130.

[0057] The piston guard 1612 is arranged on a plane different from the path of movement of the two first joints 140. Therefore, the movement of the two first joints 140 is not obstructed by the piston guard 1612. Furthermore, at least a portion of the piston guard 1612 provides protection for the movement of the two first joints 140, thereby providing stability to the movement of the first joints 140. Specifically, when the two first joints 140 move closer to each other, the y-axis direction of the piston guard 1612 (refer to...) Figure 1 A portion of the plane on the surface can contact the two first joints 140 and guide the movement path of the first joints 140.

[0058] The piston guard 1612 can be formed from a tapered shape that becomes thinner in the y-axis direction as it moves forward. That is, the side of the piston guard 1612 can have a triangular cross-section. The thinning of the piston guard 1612 towards the front ensures that the area for cleaning the razor blade 110 is maintained even when the razor blade holder 12 rotates at its maximum angle. This provides the advantage of allowing the razor blade holder 12 to rotate at a greater angle compared to a piston guard 1612 that extends to a certain thickness.

[0059] Furthermore, due to this arrangement, the piston guard 1612 protects the two first engagement portions 140 when engaged with the razor blade holder 12. That is, by adding the piston guard 1612, damage to the piston 172 protruding from the grippers 161 and 162 and the two first engagement portions 140 can be prevented.

[0060] When the two second joints 134 are arranged completely apart, the piston guard 1612 can be arranged in the space between the two second joints 134. Furthermore, according to the present invention, by corresponding the shape of the space between the two second joints 134 to the shape of the front end of the piston guard 1612, the visibility of a suitable joint point for the first joint 140 and the second joint 134 can be increased.

[0061] For components that function similarly to piston guard 1612, they can be formed on connector 130 of razor blade holder 12 instead of on holders 161 and 162.

[0062] The razor blade holder 12 is a component that needs to be constantly replaced, while the razor handle is a component that should be used continuously unless there are special circumstances. Compared to adding components such as piston guards 1612 to all razor blade holders 12, forming piston guards 1612 on a part of the razor handle, namely the upper grip 161, has the effect of reducing manufacturing costs.

[0063] The first engagement portion 140 is configured such that at least a portion is disposed within the grippers 161 and 162 and engages with the space formed inside the connector 130, namely the receiving portion 136. At least a portion of the two first engagement portions 140 are disposed within the grippers 161 and 162, while the remaining portions are arranged to protrude outward.

[0064] The first joint 140 may be formed of a plastic material. In particular, the first joint 140 may be formed of a material selected from plastics such as PEEK (PolyEther Ether Ketone), PPS (PolyPhenylene Sulfide), and engineering plastics, but is not limited thereto.

[0065] The first engagement portion 140 may include a latching portion 146 for engaging with the receiving portion 136. The latching portion 146 may include a first surface 1462 and a second surface 1464. The first surface 1462 extends in a direction perpendicular to the direction in which the razor handle is engaged with the razor blade holder; the second surface 1464 extends forward and inwardly at an angle from the end of the extending first surface 1462. The extending direction of the first surface 1462 may be parallel to the direction of the pivot PA.

[0066] When the first joint 140 is engaged with the razor blade holder 12, the tilt angle formed by the second surface 1464 preferably corresponds to the tilt angle formed by the surface of the razor blade holder 12 that the second surface 1464 contacts, specifically the fourth surface 1344.

[0067] The snap-fit ​​part 146 may have a fan-shaped cross section.

[0068] The razor handle and the razor blade holder 12 can be detached and reassembled by adjusting the distance between the two first connecting parts 140. The two first connecting parts 140 can be moved from a first position to a second position. The first position refers to the position of the two first connecting parts 140 when the length-direction distance between them is a first distance, and the second position refers to the position of the two first connecting parts 140 when the length-direction distance between them is a second distance less than the first distance.

[0069] The two first coupling portions 140 will be in a first position based on the elasticity of the second restoring force providing portion 180 (described later) without any other external force being applied. The pivot PA may pass through and be formed at the front end of the snap-fit ​​portion 146. In addition, the pivot PA may be arranged between the upper surface 121 and the third surface 1342 of the blade housing 120.

[0070] The first restoring force providing unit 170 is configured to restore the razor blade holder 12 to a neutral position by generating a cam action with a portion of the razor blade holder 12. That is, the first restoring force providing unit 170 is configured to provide a restoring force to restore the razor blade holder 12, which rotates around pivot PA, to a neutral position. The neutral position refers to the position formed when no external force is applied to the razor blade holder 12 in the state where the razor blade holder 12 and the razor handle are engaged.

[0071] The first restoring force providing part 170 may include a piston 172 and a first elastic member 174. The piston 172 is configured such that at least a portion protrudes forward from the handles 161 and 162 and is disposed between the two first engagement portions 140, acting as a cam with at least a portion of the razor blade holder 12 to transmit restoring force. One end of the piston 172 is arranged to contact the razor blade holder 12 when the razor blade holder 12 and the razor handle are engaged. The other end of the piston 172 is connected to the first elastic member 174.

[0072] The first elastic member 174 may be disposed inside the holders 161 and 162 and provide elastic force to the piston 172. The first elastic member 174 may be a spring, but is not limited thereto. The side of the first elastic member 174 near the razor blade holder 12 is connected to the piston 172, and the other side of the first elastic member 174 away from the razor blade holder 12 is connected to the disassembly / removal member 150.

[0073] Therefore, when the razor blade holder 12 rotates around the pivot PA, it compresses the first elastic member 174. The compression of the first elastic member 174 results in a restoring force based on the elasticity.

[0074] The second restoring force providing part 180 is configured to provide restoring force to return the two first engaging parts 140, which have moved to the second position, to the first position. (See reference...) Figures 1 to 3 The second restoring force providing part 180 includes a second elastic member 182, which is arranged between the two first coupling parts 140 for providing elastic force. The second elastic member 182 may be a spring, but is not limited thereto.

[0075] One side of the second elastic member 182 is connected to a first joint 140, and the other side is connected to another first joint 140. The second elastic member 182 can be arranged between the two first joints 140 and provide elasticity along the length direction.

[0076] When the distance between the two first joints 140 decreases, i.e., when moving from the first position to the second position, the second elastic member 182 is compressed and provides elastic force in the direction away from the two first joints 140. Therefore, after the two first joints 140 are moved to the second position by external influence, if the external influence is removed, they will return to the first position based on the elastic force of the second elastic member 182.

[0077] The disassembly / assembly component 150 is used to adjust the distance between the two first coupling portions 140. The disassembly / assembly component 150 controls two pressure protrusions 152. The two pressure protrusions 152 of the disassembly / assembly component 150 apply pressure to the pressure surfaces 144 of the two first coupling portions 140, thereby moving the two first coupling portions 140 to a second position. Therefore, with the razor blade holder 12 attached to the razor handle, moving the disassembly / assembly component 150 forward allows the latching portion 146 of the first coupling portion 140 to be separated from the receiving portion 136.

[0078] The lower gripper 162 may include a guide groove 166, one side of which is into which a pressure protrusion 152 is inserted for guiding the pressure protrusion 152 to move forward or backward. During the forward movement of the disassembly / removal component 150, the pressure protrusion 152 moves forward along the guide groove 166.

[0079] The guide groove 166 can be formed with a length extending forward in a direction perpendicular to the length direction. That is, the guide groove 166 can be formed as a groove extending in a direction parallel to the Z-axis. Figure 3 The guide groove 166 is formed in a rectangular shape, but is not limited to this. For example, the two ends of the guide groove 166 in the Z-axis direction may also have a curved shape.

[0080] The pressure protrusion 152 is arranged to apply pressure to the pressure surface 144 of the first joint 140 while moving along the guide groove 166 in the positive Z-axis direction. The more pressure the pressure protrusion 152 applies to the pressure surface 144, the closer the distance between the two first joints 140 becomes. That is, the more pressure the pressure protrusion 152 applies to the pressure surface 144, the more the two first joints 140 move towards the second position. When the pressure protrusion 152 moves along the guide groove 166 in the negative Z-axis direction, the distance between the two first joints 140 becomes farther due to the second restoring force providing part 180. The distance between the two first joints 140 can be adjusted based on the position of the pressure protrusion 152 within the guide groove 166.

[0081] Reference Figure 5 The latching portion 146 of the first connecting portion 140 may include a first surface 1462 and a second surface 1464 formed in the direction in front of the first surface 1462. The second connecting portion 134 may include a third surface 1342 and a fourth surface 1344 formed in the direction behind the third surface 1342. Figure 5The two fourth faces 1344 shown in the figure can have symmetrical shapes with the center of the width direction perpendicular to the length direction as a reference.

[0082] The first surface 1462 and the third surface 1342 are configured to face each other when the first engagement portion 140 of the razor handle is engaged with the second engagement portion 134 of the razor blade holder 12. The first surface 1462 and the third surface 1342 are configured such that when the razor blade holder 12 or the connector 130 rotates relative to the razor handle around the pivot PA, the first surface 1462 moves relative to the third surface 1342. The first surface 1462 is arranged to be closer to the pivot PA than the third surface 1342. The pivot PA passes through the free end of the first engagement portion 140, i.e., the front end, therefore the first surface 1462 is arranged closer to the pivot PA than the third surface 1342.

[0083] The first surface 1462 and the third surface 1342 can be formed by curved surfaces. In this case, the third surface 1342 can have a concave curved surface, and the first surface 1462 can have a convex curved surface corresponding to the concave curved surface of the third surface 1342. The curved surfaces of the first surface 1462 and the second surface 1342 can have an arc profile centered on the pivot RA. Alternatively, the curvature of the first surface 1462 can be formed to correspond to the curvature of the third surface 1342. The first surface 1462 is not necessarily a curved surface, or necessarily corresponds to the curvature of the third surface 1342. For example, the first surface 1462 can be a plane. The first surface 1462 can be a plane and move relative to the curved third surface 1342 when the razor blade holder 12 rotates.

[0084] In order to enter the receiving portion 136 within the second joint 134 during the engagement of the first joint 140 and the second joint 134, the second surface 1464 can generate a cam action with the fourth surface 1344. The fourth surface 1344 is configured to generate a cam action with the second surface 1464 regardless of the angle at which it enters when the first joint 140 and the second joint 134 are engaged.

[0085] That is, as long as the razor blade holder 12 satisfies the condition of being rotatable within a preset angle range in the recess 1362 of the second engagement portion 134, the first engagement portion 140 can be engaged by the cam action of the second surface 1464 and the fourth surface 1344 regardless of the direction in which it enters. When the initial rotation angle of the razor blade holder 12 is considered to be 0 degrees, the preset angle range here can be from 0 degrees to 90 degrees, and preferably from 0 degrees to 50 degrees. This reduces the inconvenience caused to the user when replacing and re-engaging the razor blade holder 12.

[0086] Furthermore, as previously described, the second surface 1464 and the fourth surface 1344 are formed at corresponding angles, so that a certain contact area can be maintained between the second surface 1464 and the fourth surface 1344 during the period when the first joint 140 is engaged with the razor blade holder 12 and generates a cam action.

[0087] Figure 6 This is a rear view of a razor assembly according to an embodiment of the present invention.

[0088] Reference Figure 6 The diagram illustrates an arbitrary S-axis that is perpendicular to the pivot PA and parallel to the length direction of the guide groove 166. The pressure surface 144 of the first joint 140 can be formed in a shape based on an inclination angle α of the S-axis. As the angle α increases, the distance applied by the first joint 140 when the pressure protrusion 152 moves forward along the guide groove 166 will increase.

[0089] As described above, by adjusting the angle α of the pressure surface 144 during the manufacturing of the first joint 140, the maximum distance that the first joint 140 can move based on the pressure protrusion 152 can be adjusted. Furthermore, the present invention can increase the maximum distance that the first joint 140 can move along its length direction without adding other components by increasing the angle α of the pressure surface 144.

[0090] For the latching portion 146 of the first coupling portion 140 to fully engage with the connector 130, the movable distance of each of the two first coupling portions 140 should be greater than the length B of the first surface 1462 of the latching portion 146. Therefore, if the movable distance of one first coupling portion 140 is less than B, the length of the second coupling portion 134 connecting the latching portion 146 to the connector 130 cannot be sufficiently guaranteed, making it difficult to achieve a stable engagement between the razor handle and the razor blade holder 12. In other words, for the latching portion 146 to fully engage within the receiving portion, the two first coupling portions 140 need to ensure sufficient movable distance.

[0091] Based on the technical features related to the pressure surface 144 and the guide groove 166 mentioned above, the distance between the first position and the second position of the two first joints 140 can be increased.

[0092] Figure 7 This is a rear view of a razor assembly according to another embodiment of the present invention.

[0093] Reference Figure 7The second restoring force providing part 180 may include two second elastic members 182, which are respectively connected to a portion of the wall surface of the lower grip 162 and the two first coupling parts 140, and provide elastic force to each of the first coupling parts 140. The two second restoring force providing parts 180 do not necessarily need to contact the lower grip 162, as long as they are arranged to satisfy the condition that one end of the second restoring force providing part 180 is fixed at one place.

[0094] like Figure 6 A second elastic member 182 connects the two first joints 140. When the second elastic member 182 malfunctions or loses its elasticity by dislodging from its original position, it cannot provide restoring force to the two first joints 140. Conversely, according to Figure 7 In another embodiment shown, the two first joints 140 are respectively connected to a second elastic member 182, so that even if any one of the second elastic members 182 fails or loses its elasticity, the other second elastic member 182 can provide restoring force through its corresponding first joint 140.

[0095] In addition, such as Figure 6 As shown, the first elastic component 174 and the second elastic component 182 may physically interfere with each other while being compressed and expanded respectively, but according to Figure 7 In another embodiment illustrated, the second elastic member 182 is arranged apart from the first elastic member 174, and there is no physical interference between them.

[0096] Figures 8a to 8d This is a diagram illustrating the process of joining and separating the razor blade holder and the razor handle according to an embodiment of the present invention. For ease of explanation, the upper grip 161 is omitted in the drawing. Figure 8a This is a diagram showing the razor handle before it is combined with the razor blade holder 12. Figure 8b This diagram illustrates the cam action of the first joint 140 on the second joint 134 during the assembly of the razor handle and the razor blade holder 12. Figure 8c This is a diagram showing the state after the razor handle and razor blade holder 12 are combined. Figure 8d This is a diagram showing the state of the razor handle after it has been separated from the razor blade holder 12.

[0097] according to Figure 8a , Figure 8b and Figure 8c In this order, the razor handle is attached to the razor blade holder 12.

[0098] Reference Figure 8a The illustration shows one embodiment of the razor handle entering the razor blade holder 12. The direction in which the razor handle enters the razor blade holder 12 is not as shown... Figure 8aThe example shown is only one example; it is sufficient to enter the shaver within a preset angle range that allows the shaver blade holder 12 to rotate. That is, according to the present invention, when the shaver handle is combined with the shaver blade holder 12, the user can easily combine them without having to consider the angle of combination or other effort.

[0099] Figure 8a The enlarged illustration shows the latching portion 146. The length of the front end edge of the latching portion 146 in the longitudinal direction is shown as A, and the length of the first surface 1462 in the longitudinal direction is shown as B. Specifically, A refers to the portion of the front end edge of the latching portion 146 parallel to the pivot PA. In this invention, the length of B is increased compared to the prior art, thereby making the connection between the first connecting portion 140 and the second connecting portion 134 more stable. Furthermore, portion A, as the part that directly supports the blade housing 120 when the razor blade holder 12 rotates, provides more stable support by forming portion A with a longer length. A can be 2.5 mm or more, and B can be 1.5 mm or more. Preferably, A can be 2.85 mm, and B can be 1.74 mm.

[0100] Reference Figure 8b The illustration shows the process of a cam action between the second surface 1464 of the first connecting portion 140 and the fourth surface 1344 of the second connecting portion 134 during the insertion of the razor handle into the razor blade holder 12. However, the cam action is not always necessary during the connection process. By moving the disassembly / assembly component 150 forward, the user can move the two first connecting portions 140 to the second position, thus placing the first connecting portions 140 into the receiving portion 136 without the cam action.

[0101] Reference Figure 8c When the first connecting part 140 is fully inserted into the receiving part 136, the cam action state between the second surface 1464 and the fourth surface 1344 can be released.

[0102] By releasing the cam's action, the second surface 1464 no longer applies pressure to the fourth surface 1344, thereby allowing the two first connecting portions 140 to return to their first positions based on the elastic force of the second restoring force providing portion 180. When the two first connecting portions 140 return to their first positions within the receiving portion 136 of the second connecting portion 134, the first surface 1462 of the first connecting portion 140 and the third surface 1342 of the second connecting portion 134 can face each other, thereby allowing the first connecting portions 140 and the second connecting portion 134 to engage with each other.

[0103] In this case, the first surface 1462 may have a shape corresponding to the shape of the third surface 1342, so that the first joint 140 and the second joint 134 can be joined more firmly. For example, the third surface 1342 may have a concave curved surface, and the first surface 1462 may have a convex curved surface corresponding to the concave curved surface of the third surface 1342.

[0104] Reference Figure 8d By moving the disassembly component 150 forward, the two first joints 140 are moved to the second position, thereby separating the razor handle from the razor blade holder 12. At this time, the disassembly component 150 needs to be moved forward sufficiently so that the first surface 1462 of the first joint 140 is disengaged from the third surface 1342 as much as possible.

[0105] Figure 9a and Figure 9b This is a diagram illustrating the state of a razor blade holder during rotation according to an embodiment of the present invention. Specifically, Figure 9a and Figure 9b It is along Figure 6 A cross-sectional view of a razor assembly cut along the A-A' direction. Figure 9a This is a diagram showing the neutral position of the razor blade holder 12. Figure 9b This is a diagram showing the maximum rotational position of the razor blade holder 12. The razor blade holder 12 rotates between the neutral position and the maximum rotational position based on an external force, and when the external force disappears, the rotating razor blade holder 12 returns to the neutral position based on the restoring force provided by the first restoring force providing unit 170.

[0106] Reference Figure 9a and Figure 9b The first surface 1462 may have a convex curved surface, and the third surface 1342 may have a concave curved surface corresponding to the convex curved surface of the first surface 1462. In order to enable the razor blade holder 12 to rotate smoothly, the curved surfaces of the first surface 1462 and the third surface 1342 may have an arc profile centered on the pivot RA.

[0107] A recess 1362 is formed within the receiving portion 136 to receive the latching portion 146 of the first connecting portion 140. The cross-section of the recess 1362 may be fan-shaped. The pivot PA may be arranged to penetrate the recess 1362. Specifically, the pivot PA may be arranged to penetrate the end of the blade housing 120 in the direction of the upper surface 121 of the recess 1362. The cross-sectional shape of the latching portion 146 may be fan-shaped and correspond to the shape of the recess 1362. Here, fan-shaped refers to, but is not limited to, a shape formed by two radii from the center of a circle and an arc connecting the two radii, and may also refer to any shape formed by two line segments and a curve. In addition, the latching portion 146 may also be a non-fan-shaped triangular shape. That is, as long as it can rotate within the recess 1362, the cross-section of the latching portion 146 does not necessarily have to be fan-shaped.

[0108] The razor blade holder 12 can rotate around pivot PA, from a neutral position to a maximum rotation position. At this time, as... Figure 9a and Figure 9bAs shown, the pivot PA is located at the front end of the first joint 140, thereby enabling a seamless shave over curved skin surfaces. That is, the pivot PA is closer to the upper part 121 of the blade housing 120 and closer to the foremost point of the shaving blade 110, thus allowing the shaver assembly to achieve a more complete rotation function.

[0109] When the razor blade holder 12 is in its maximum rotational position, the first engagement portion 140 will contact the stop surface 132. This helps prevent damage to the first engagement portion 140 in cases where excessive external force is applied to the razor blade holder 12, causing it to exceed its maximum rotational position and move. Specifically, when the first engagement portion 140 is in its maximum rotational position, the contact area between the upper surface of the first engagement portion 140 and the stop surface 132 is maximized. By dispersing the force applied to the first engagement portion 140, damage to the first engagement portion 140 is prevented. Furthermore, by limiting the rotation of the razor blade holder 12 to within the permissible rotation angle, the second engagement portion 134 is prevented from detaching from the first engagement portion 140 of the razor handle and separating.

[0110] The above description is merely illustrative of the technical concept of this embodiment. For those skilled in the art, various modifications and variations can be made without departing from the essential characteristics of this embodiment. Therefore, this embodiment is not intended to limit the technical concept but is for illustrative purposes, and the scope of the technical concept is not limited by the described embodiment. The scope of protection of this embodiment should be interpreted based on the appended claims, and all technical concepts within the equivalent scope should be interpreted as falling within the scope of the rights of this embodiment.

[0111] [Explanation of reference numerals in the attached figures]

[0112] 12: Razor blade holder; 110: Razor blade; 112: Cutting edge; 120: Blade housing; 121: Top; 122: Blade guard; 123: Bottom; 124: Cover; 125: Clip; 130: Connector; 132: Stop surface; 134: Second mating part; 1342: Third surface; 1344: Fourth surface; 136: Receiving part; 1362: Recess; 140: First mating part; 142: Insertion groove 144: Pressurizing surface; 146: Snap-fit ​​part; 1462: First surface; 1464: Second surface; 150: Disassembly / assembly component; 152: Pressurizing protrusion; 161: Upper gripper; 162: Lower gripper; 1612: Piston protector; 164: Insertion protrusion; 166: Guide rail groove; 170: First restoring force providing part; 172: Piston; 174: First elastic component; 180: Second restoring force providing part; 182: Second elastic component

[0113] [Cross-references to related applications]

[0114] This application is based on and claims priority to Korean Patent Application No. 10-2021-0062897, filed on May 14, 2021, the entire contents of which are incorporated herein by reference.

Claims

1. A razor handle for coupling with a razor blade holder via a connector, comprising: Holder; Two first coupling portions, at least a portion of which are disposed within the holder, and include a latching portion, the latching portion including a first surface and a second surface, the first surface extending in a direction perpendicular to the direction in which the razor handle is coupled with the razor blade holder; the second surface extending obliquely inward from the end of the extending first surface in a forward direction. as well as The disassembly and assembly component is used to adjust the distance between the two first joints, and has a first position when the distance between the two first joints is a first distance and a second position when the distance between the two first joints is a second distance less than the first distance; The recessed portion on the connector and the snap-fit ​​portion each have corresponding fan-shaped cross-sections. With the razor blade holder engaged with the first connecting portion, a pivot is formed for penetrating the front end of the latching portion, and this pivot penetrates the end of the recess near the razor blade holder. The two first joints have a pressure surface formed behind the first surface, and the disassembly component has a pressure protrusion for applying pressure to the pressure surface. The pressure protrusion applies pressure to the pressure surface, causing the distance between the two first joints to deform.

2. The razor handle as described in claim 1, characterized in that, The razor blade holder includes a third surface positioned opposite the first surface, and when the razor blade holder is rotated relative to the holder, the first surface moves along the third surface relative to the third surface.

3. The razor handle as described in claim 1, characterized in that, It further includes a first restoring force providing unit, which is configured to provide restoring force to return the razor blade holder, which rotates around the pivot, to a neutral position.

4. The razor handle as described in claim 3, characterized in that, The first restoring force providing unit includes: A piston, at least a portion of which protrudes from the front of the holder and is disposed between the two first couplings, transmits restoring force by cam action with at least a portion of the razor blade holder; and A first elastic component is used to provide elastic force to the piston.

5. The razor handle as described in claim 4, characterized in that, The first elastic member is connected to the piston on the side near the razor blade holder, and connected to the disassembly / assembly component on the other side away from the razor blade holder.

6. The razor handle as described in claim 4, characterized in that, It further includes a piston guard that extends forward from the gripper and is disposed between the two first joints.

7. The razor handle as described in claim 6, characterized in that, The front end edge of the piston guard does not protrude forward compared to the front end edge of the piston.

8. The razor handle as described in claim 6, characterized in that, It includes two piston guards extending from the gripper, the two piston guards being arranged on the left and right sides of the piston respectively, with reference to the protruding direction of the piston.

9. The razor handle as described in claim 1, characterized in that, When the first connecting part is connected to the razor blade holder, the tilt angle of the second surface corresponds to the tilt angle of the contact surface of the razor blade holder that the second surface contacts.

10. The razor handle as described in claim 1, characterized in that, It further includes a second restoring force providing part, which is configured to provide a restoring force for restoring the two first joints that have moved to the second position back to the first position.

11. The razor handle as described in claim 10, characterized in that, The second restoring force providing part includes a second elastic member disposed between the two first joints for providing elastic force.

12. The razor handle as described in claim 10, characterized in that, The second restoring force providing part includes two second elastic components, which are respectively connected to a portion of the wall of the gripper and the two first joints and provide elastic force to each of the first joints.

13. The razor handle as described in claim 1, characterized in that, The gripper further includes a guide groove for inserting the pressure protrusion into one side of the gripper and for allowing the pressure protrusion to move forward or backward.

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