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JP-7855431-B2 - razor

JP7855431B2JP 7855431 B2JP7855431 B2JP 7855431B2JP-7855431-B2

Inventors

  • 横田 善行

Assignees

  • 大王製紙株式会社

Dates

Publication Date
20260508
Application Date
20220713

Claims (7)

  1. A razor having a blade fixing member and a handle, The blade fixing member is, It comprises a blade, a frame assembled from a sheet material having a blade support section to which the blade is fixed, and a blade tip exposure opening through which the cutting edge of the blade fixed to the blade support section is exposed, The pattern is Assembled from sheet material, The handle portion is held by the user, It has a head portion to which a blade fixing member is attached, The head section is, A mounting surface for attaching the blade fixing member, and a mounting part connected to the tip of the handle portion via a first fold line, which is pivotable about the first fold line as an axis, It has a back plate portion which is connected to the mounting portion via a second fold line which is arranged parallel to the first fold line, and which is folded back by the second fold line and is located on the rear end side of the handle portion than the mounting portion, The mounting portion is cut and bent from the handle portion, with the mounting portion being the tip. This cutting and bending creates a tongue portion that generates leaf spring elasticity. The back plate portion, folded back along the second fold line, is inserted between the cut and bent tongue portion and the handle portion. The tongue portion presses against the back plate portion and is configured to generate elastic bias against the back plate portion being pushed toward the base end of the tongue portion due to the swinging of the mounting portion. The blade fixing member is attached to the handle in a direction such that the blade tip faces the first fold line. A razor characterized by the following features.
  2. The blade fixing member is, It has a front section with an opening for the blade tip to be exposed, and a back section facing the front section, The blade support section is formed between the front and back sections by cutting and bending a portion of the sheet material toward the back side. The blade tip exposure opening is formed by cutting and bending the blade support portion, The back of the blade fixing member is attached to the mounting surface of the handle. The razor according to claim 1.
  3. The blade fixing member is, It has a second blade support part connected to the rear part, The second blade support is bent towards the front and positioned opposite the blade support formed by cutting and bending. The blade is also fixed to the second blade support, The blade tip is exposed at the blade tip exposure opening. The cutting edge of the blade fixed to the blade support, The cutting edge fixed to the second blade support, The blades are positioned so that they overlap with a slight offset. The razor according to claim 2.
  4. The razor according to claim 2 or 3, wherein the movement of the blade support is restricted by the back portion.
  5. The frame is It has a front portion having a blade tip exposure opening, a rear portion facing the front portion, a rear side opening formed in the rear portion, one or more front side grooves formed on the edge of the blade tip exposure opening, and one or more rear side grooves formed on the edge of the rear side opening, The front and back sections are connected via a fold line, and the folding along this fold line positions the front and back sections opposite each other. A blade tip exposure opening is formed connecting the front and back sections by a blade tip exposure opening and a rear-side opening, and a blade support groove is formed by a front-side recess and a rear-side recess, supporting the blade. The blade is supported by fitting into the blade support groove. Furthermore, the back portion of the blade fixing member is attached to the mounting surface of the handle. The razor according to claim 1.
  6. The tongue portion holds the back plate portion between itself and the handle portion. A sliding piece is provided at the tip of the back plate portion, which contacts the handle portion, and the sliding piece slides on the handle portion in accordance with the movement of the mounting portion, as described in claim 1.
  7. The back panel is, The tip portion, enclosed by a convex slit toward the second fold line and a pair of third fold lines connected to the end of this slit and parallel to the second fold line, is folded back along the third fold lines. The portion surrounded by the convex slit has a receiving portion formed by inversion, and the tongue portion rests on and presses against this receiving portion. The razor according to claim 1.

Description

This invention relates to a razor and a blade fixing member for a razor. Razors are commonly known to have a T-shape, consisting of a razor head (sometimes called a cartridge) with a metal blade housed in a resin case, and a handle that integrates the head portion for attaching the razor head and the handle portion for the user's grip and operation. The razor head typically has a metal blade fixed to a hard plastic frame, and the handle is usually made of hard plastic or metal. Because of this design, razors are difficult to fold or disassemble, require ample storage space, and are inconvenient to carry. Furthermore, separating the plastic frame from the metal blade was extremely difficult, practically impossible, and both were treated as combustible or non-combustible waste, resulting in ineffective recycling of the materials. Additionally, attempting to separate the materials posed a risk of injury to workers due to the metal blade. On the other hand, in accommodations such as inns and hotels, disposable razors with plastic heads and handles are sometimes provided as amenities. In recent years, issues such as marine pollution caused by microplastics have attracted attention, and the global movement towards plastic reduction is progressing from an environmental protection standpoint. In Japan, the "Act on Promotion of Resource Recycling Related to Plastics" was enacted, making it mandatory for certain businesses, such as hotels, to reduce the use of single-use plastic products. This "Act on Promotion of Resource Recycling Related to Plastics" designates plastic razors as "specific plastic-using products," and the move towards plastic-free razors is attracting attention. A razor with a paper handle, formed by folding and assembling a thin sheet, is proposed, for example, in Patent Document 1 below. This razor, with its paper handle, uses less plastic overall, and can be transported and stored in sheet form, improving storage and transportability. For example, it can be delivered to stores or accommodations in sheet form, stored in the back room in sheet form, and assembled and used as needed. Patent No. 68458478 This is a front view of the razor R according to the first embodiment.This is a rear view of the razor R according to the first embodiment.This is a side view of the razor R according to the first embodiment.This is a perspective view of the razor R of the first embodiment.This is a rear perspective view of the razor R of the first embodiment.This is a front view of the blade fixing member according to the first embodiment.This is a diagram showing the VII-VII section of Figure 6.This figure shows the unfolded state of the frame of the blade fixing member according to the first embodiment.This is a first diagram illustrating the assembly of the blade fixing member according to the first embodiment.This is a second diagram illustrating the assembly of the blade fixing member according to the first embodiment.This is a rear view of the blade fixing member according to the first embodiment.This is a diagram illustrating the blade support portion according to the first embodiment.This is a diagram showing the cross-section between XIII-XIII in Figure 12.This is a view from the rear side of the unfolded state of the blade fixing member according to the first embodiment.This is a diagram showing the XV-XV section of Figure 14.This is a diagram illustrating how the blade fixing member of the razor R in the first embodiment is attached to the handle.This is a diagram of the unfolded handle according to the first embodiment.This is a perspective view of the handle according to the first embodiment.This figure shows a cross-section of the multilayer paper according to this embodiment.This is a front view of the blade fixing member according to the second embodiment.This is a diagram showing the XXI-XXI section of Figure 20.This is the first diagram illustrating the assembly of the blade fixing member according to the second embodiment.This is a diagram showing the cross-section XXIII-XIII in Figure 22.This figure shows the unfolded state of the frame of the blade fixing member according to the second embodiment.This is a diagram illustrating the blade support portion according to the second embodiment.This is a view from the rear side of the unfolded state of the blade fixing member according to the second embodiment.This is a front view of the blade fixing member according to the third embodiment.This figure shows the unfolded state of the frame of the blade fixing member according to the third embodiment.This is a front view of the frame according to the third embodiment.This is a perspective view showing the blade of the third embodiment.This figure shows the unfolded state of the fixed frame in the third embodiment.This is a diagram illustrating the installation of the fixed frame according to the third embodiment.This is a front view showing a blade fixing member to which a fixing frame according to the