Blade receiving assembly and cutting device

Abstract

The present invention relates to a blade receiving member assembly, the blade receiving member assembly comprising: a switching member, the switching member comprising a switching member cover and a switching member base fixedly connected to each other, wherein the switching member base has an opening; a shaft, the shaft having a structural part and a body receiving member part, wherein the shaft is arranged to move relative to the switching member through the opening of the switching member base. The present invention also relates to a cutting device comprising the blade receiving member assembly.

Description

Technical Field

[0001] The present disclosure relates to a blade receiver assembly and a cutting device having a rotating blade, and more particularly, the present disclosure relates to a rotating blade replacement system for a cutting device. Background Art

[0002] Cutting devices with rotating blades, also known as rotary cutters, are widely used for cutting fabric materials and in particular for cutting fabric and paper. When a rotary blade becomes too dull, it is almost impossible to sharpen the rotary blade without a suitable sharpener, and thus the rotary blade needs to be replaced.

[0003] In known solutions, replacing the blade requires the user to hold the blade between fingers. However, even a dull rotating blade can still be very sharp to skin tissue and can cut skin tissue if not handled with care. Summary of the invention

[0004] It is therefore an object of the present invention to provide a blade receiving assembly and a cutting device, whereby the risk of accidentally cutting oneself is minimized. In particular, the object introduced is to create a solution by which one or more of the problems identified in the above-mentioned prior art and / or problems discussed or suggested elsewhere in the description can be solved.

[0005] The invention is based on the idea of ​​a rotary blade replacement system which releases and attaches a rotary blade without the user having to touch the blade at all.By means of this solution one or more of the above objects may be achieved.

[0006] One embodiment relates to a new blade receiving member assembly, the blade receiving member assembly including a switch member, the switch member including a switch member cover and a switch member base fixedly connected to each other, wherein the switch member base has an opening. The blade receiving member assembly also includes a shaft having a structural portion and a body receiving member portion, wherein the shaft is arranged to move relative to the switch member through the opening of the switch member base.

[0007] Another embodiment relates to a cutting device, the cutting device comprising a body, the body comprising a handle and a blade assembly retaining member. The cutting device also includes: a blade receiver assembly having a switch, the switch comprising a switch cover and a switch base fixedly connected to each other, wherein the switch base has an opening; a spring-loaded shaft having a structural portion and a body receiver portion, wherein the shaft is arranged to move through the opening of the switch base, and the body receiver portion is releasably connectable to the blade assembly retaining member. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 shows a side view of a rotating cutting member according to an embodiment;

[0009] Figure 2 shows an exploded view of a rotary blade replacement assembly according to an embodiment;

[0010] Figure 3 shows a bottom view of the rotary blade replacement assembly;

[0011] Figure 4 A cross-sectional view of a rotary blade replacement assembly is shown. DETAILED DESCRIPTION

[0012] Reference Figure 1 ,Should Figure 1 A handheld cutting device is shown. The cutting device comprises a body 10, which comprises a handle 11 and a blade assembly retaining member 12. A rotary blade replacement assembly 100 is connected to the blade assembly retaining member 12 in a releasable manner. The handle 11 may have a gripping portion and a contoured form that facilitates manual gripping of the cutting device. The blade assembly retaining member 12 is used to provide a holding position for the rotary blade 13 when the rotary blade 13 and the rotary blade replacement assembly 100 are engaged with the blade assembly retaining member 12. The cutting device is constructed and dimensioned for rotary blades of various sizes and types. For ambidexterity, the rotary blade replacement assembly 100 may be mounted on either side of the body 10.

[0013] The cutting device may further comprise a sliding member 16 connected to the sliding base to move a blade guard 17. The blade guard 17 provides additional safety for the user to prevent the user from being accidentally cut by the rotating blade 13.

[0014] The blade can be any rotating blade 13 with a perforation 14 in the middle. The blade can be a straight, wavy, fan-shaped or serrated (pinking) blade. Rotating blades are usually sold in a cylinder or box, which can have more than one blade for replacement. The package can be equipped with two cylinders: one cylinder for blunt blades and one cylinder for spare blades. The rotating blade 13 can be made of ferromagnetic material, such as iron, steel, nickel, cobalt, etc.

[0015] Figure 2 An exploded view of a blade replacement assembly 100 is shown in accordance with an embodiment. Figure 3 A bottom view of the rotary blade replacement assembly 100 is shown. Figure 4 A cross-sectional view of the rotary blade replacement assembly 100 is shown (by Figure 3). The blade receiving member assembly 100 includes a switch member 110, wherein the switch member 110 includes a switch member cover 102 and a switch member base 106 fixedly connected to each other. The fixed connection can be achieved by an adhesive or a mechanical fastener.

[0016] The switch cover 102 is designed to enable the user's fingers to grip onto it, and the switch cover 102 forms an internal space together with the switch base 106. In the accompanying drawings, the switch cover 102 includes a flip mechanism having a flippable arc 101, wherein both ends of the arc 101 have internal protrusions 1011 facing each other and configured to fit in and rotate in the hole 1021 of the switch cover 102. The hole 1021 is arranged on both sides of the switch cover 102. During use, the user can flip the arc 101 closer to the switch cover 102, which will improve the line of sight of the cutting edge of the rotating blade 13 by reducing the overall height H of the blade replacement assembly 100. During the blade replacement operation, the user can flip the arc 101 away from the switch cover 102, which will provide a better grip for the fingers. The arc 101 may have a smooth or angled curve.

[0017] Alternatively, the switch cover 102 can be designed as a protruding flange, or a knob, or any other practical and / or aesthetic design with an internal space. The switch base 106 can be designed as a plate to close the other side of the switch cover 102. The internal space of the switch 110 is designed to keep the shaft 105 at least partially within the internal space.

[0018] The switch base 106 has an opening 1061, thereby allowing the shaft 105 to move through the opening 1061. The opening 1061 can be shaped into an oval, but other shapes are also applicable. The switch cover 102 and the switch base 106 can be made of glass-filled nylon or other suitable materials including polymers. For the high durability of the shaft 105, the shaft 105 can be made of steel material.

[0019] The shaft 105 includes a structural portion 1051 and a body receiving portion 1052, wherein the structural portion 1051 is at least partially disposed within the switch 110, and the body receiving portion 1052 is releasably connectable to a locking portion 15 located in the blade assembly retaining member 12. The body receiving portion 1052 is sized to pass through the through hole 14 of the rotating blade 13. The body receiving portion 1052 of the shaft 105 is arranged outside the switch 110, wherein the rotating blade 13 is arranged to be fitted between the body receiving portion 1052 and the switch base 106 and rotate between the body receiving portion 1052 and the switch base 106.

[0020] An elastic member 103 is arranged in the switching member 110 and connected to the shaft 105, so as to allow the shaft 105 to move along the axis A against elastic force or elastic deformation. The elastic member 103 here may refer to a coil spring or any other elastic material capable of storing mechanical energy, such as foam or rubber. The elastic force prevents the end surface 1054 of the shaft 105 from moving toward the switching member cover 102 and thereby prevents the end surface 1054 of the shaft 105 from contacting the inner surface 1022 of the switching member cover 102.

[0021] The spring-loaded shaft 105 may also include a magnet 104, which is bonded or embedded in a structural portion 1051 of the shaft 105, for example, by adhesive, welding or mechanical means. The magnet 104 may refer to any permanent magnet for generating a magnetic field, such as neodymium iron boron (NdFeB), samarium cobalt (SmCo), aluminum nickel cobalt, and ceramic or ferrite magnets. The magnet 104 may be bonded or embedded in a structural portion of the shaft 105 so that: a surface 1041 of the magnet 104 may be exposed from an opening 1061 of the switching member base 106. The magnet 104 may be arranged to be spaced apart from the axis A of the shaft 105, and when the spring 103 is not in a compressed position, the surface 1041 of the magnet 104 may be located in the same plane as the switching member base 106. In some embodiments, two or more magnets 104 may be bonded in the structural portion 1051 on both sides of the axis A to obtain a stronger magnetic force.

[0022] exist Figures 2 to 4 In the embodiment shown in , the structural portion 1051 having the magnet 104 has a larger diameter than the body receiving member portion 1052, so that the magnet is not blocked by the body receiving member portion 1052. The elastic member 103 can be partially arranged inside the shaft 105 to facilitate holding the elastic member 103 in place. In another embodiment, the elastic member 103 can partially surround the shaft 105, wherein the end of the shaft 105 closest to the switching member is designed to fit inside the elastic member 103.

[0023] The rotary blade 13 can be rotatably arranged on the shaft 105 and between the magnet 104 and the body receiving part 1052, wherein the magnetic force attracts the rotary blade 13 and prevents the rotary blade 13 from slipping off the shaft 105. During the attachment operation of the rotary blade, the magnetic force of the magnet 104 is also utilized. When a new rotary blade is located in the cylindrical member, the switching member 110 with the shaft 105 is moved closer so that the body receiving part 1052 passes through the through hole 14 of the rotary blade 13, and by the magnetic force, the rotary blade 13 is attracted to the magnet 104 without the user having to touch the rotary blade 13 at all.

[0024] During the disassembly operation of the rotating blade 13, the shaft 105 is arranged to slide relative to the switching member base 106 when the elastic member 103 of the spring-loaded shaft 105 is compressed, wherein the distance between the magnet 104 and the rotating blade 13 increases and the magnetic force weakens, causing the rotating blade 13 to slide off the shaft 105.

[0025] When the switching piece 110 is connected to the blade assembly holding member 12, the switching piece 110 can be rotatable around the axis A of the shaft 105, or can be slidable along the axis A of the shaft 105, or can be both rotatable around the axis A of the shaft 105 and can be slidable along the axis A of the shaft 105, depending on the arrangement of the blade assembly holding member 12 and the body receiving piece portion 1052. In the drawings, the body receiving piece portion 1052 is shown to include a rotatable twist lock mechanism 1055, and the twist lock mechanism 1055 is arranged such that: in one position, the twist lock mechanism 1055 is locked to the locking portion 15 of the blade assembly holding member 12, and, in another position, the twist lock mechanism 1055 is releasably slid into / out of the blade assembly holding member 12. The term "twist-lock mechanism" herein refers to a mechanism that locks the shaft to the corresponding part by rotating the shaft having at least one protrusion and / or at least one recess in one direction, and unlocks the shaft from the corresponding part by rotating the shaft back or further. The twist-lock mechanism 1055 may be a groove on the body receiving member portion 1052, which is arranged to connect the shaft 105 to the locking portion 15 in the blade assembly retaining member 12 in the locked position and fix the shaft 105 to the locking portion 15. The shaft 105 is released from the locking portion 15 by rotating the switching member 110. However, other known locking mechanisms may also be implemented.

[0026] The blade receiving member assembly 100 may also include a support assembly 107, wherein the switching member base includes a corresponding support assembly opening 1062 for the support assembly 107. The support assembly 107 may include a housing 1071, a spherical support 1072 and a support elastic member 1073, or any other known support scheme. In the following figures, the support assembly 107 is arranged in the support assembly opening 1062 so that the spherical support 1072 partially protrudes from the switching member housing 106. When the blade receiving member assembly 100 is connected to the rotating blade 13 and the body 10, due to the magnetic force, the surface of the rotating blade 13 facing the switching member 110 is only in contact with the spherical support 1072, and the rotating blade 13 does not contact the switching member base 106 or the magnet 104. This allows the friction between the switching member 110 and the rotating blade 13 to be minimized, which increases the stability and smoothness during use for the user. In order to stably rotate the blade 13 , preferably, two bearing assemblies 107 are arranged on both sides of the shaft 105 at the same distance from the axis A of the shaft 105 .

[0027] The switch cover 102 may include a step 1021 that protrudes from the inner surface of the switch cover 102 and supports the elastic member 103, wherein the elastic member 103 surrounds the step 1021, thereby allowing the shaft 105 to slide along the axis A of the shaft 105 toward the step 1021 when the elastic member 103 of the spring-loaded shaft 105 is compressed and supported by the inner surface of the switch cover 102. In another embodiment in which the elastic member 103 partially surrounds the end of the shaft 105, the switch cover 102 may include a cavity, thereby allowing the end of the shaft to slide into the cavity when the inner surface 1022 of the switch cover 102 supports the elastic member 103.

[0028] The shaft 105 may include a flange 1053 at the structural portion 1051 to prevent the shaft 105 from falling off the switching member 110. The flange 1053 may be supported to abut against an inner edge 1063 of an opening 1061 of the switching member base 106. Unless the structural portion 1051 slides within the inner space of the switching member 110 and the flange 1053 is separated from the inner edge 1063 of the switching member base 106 when the switching member 110 is compressed against the elastic force, the flange 1053 contacts the inner edge 1063 due to the elastic force.

[0029] The following is a suggestion on how to replace a dull rotary blade with a new rotary blade using the above described embodiment.

[0030] 1) The user flips the arc 101 away from the switch 110 to hold onto the arc 101, and then rotates and optionally presses the switch 110, which rotates the spring-loaded shaft 105. At this time, the body receiver portion 1052 of the shaft 105 including the twist-lock locking portion can slide out of the blade assembly retaining member 100, thereby causing the blade receiver assembly 100 to be disengaged from the body 10.

[0031] 2) At this time, the blade receiver assembly 100 may slip off, and the dull rotary blade 13 moves along with the blade receiver assembly 100 due to the magnetic force caused by the magnet 104 incorporated in the shaft 105 .

[0032] 3) The switch 110 is pushed against a horizontal surface, for example, against the inner surface of a cylindrical member provided with a rotary blade package for disposing blades, wherein the shaft 105 slides toward the inner space of the switch cover 102 against the elastic force. This causes the magnetic force between the magnet 104 and the rotary blade 13 to weaken due to the support of the rotary blade 13 by the switch base 106, which causes the blunt rotary blade 13 to be released from the shaft 105 when the magnetic force is too weak to attract the rotary blade 13. This does not require the user to touch the rotary blade 13 at all.

[0033] 4) At this point, the blade receiver assembly 100 can engage the new rotary blade 13 by sliding the shaft 105 through the through-hole 14 of the new rotary blade 13. Preferably, the barrel holding the new rotary blade 13 has a cup-shaped recess that aligns with the through-hole 14 of the blade 13 to raise the new rotary blade 13 enough for the magnetic force to attract the blade 13 and hold the blade 13 attracted toward the switch base 106. This step also does not require the user to touch the rotary blade 13.

[0034] 5) At this point, the blade receiver assembly 100 with the new blade 13 is ready to be installed on the body 10. The body receiver portion 1052 of the shaft 105 is aligned with the locking portion 15 of the blade assembly receiver member 12 and is securely locked by rotating the switch 110 to the initial position. At this point, the rotary blade 13 is replaced, and the user can flip the arc 101 back toward the switch 110. The cutting device with the new blade 13 is ready to be used.

[0035] It should be understood that the above description and drawings are only intended to teach the best way known to the inventor to make and use the present invention. It will be apparent to those skilled in the art that the concept of the present invention may be implemented in a variety of ways. Therefore, as will be appreciated by those skilled in the art based on the above teachings, the above embodiments may be modified or varied without departing from the present invention. Therefore, it should be understood that the present invention and embodiments of the present invention are not limited to the above examples, but may be varied within the scope of the claims.

Claims

1. A blade receiving member assembly, include: A switching member, the switching member comprising a switching member cover and a switching member base, the switching member cover and the switching member base being fixedly connected to each other to form an inner space, wherein the switching member base comprises an opening; a shaft having an axis and comprising a structural portion and a body receiving portion, wherein the structural portion is at least partially disposed within the switching member and the body receiving portion is disposed outside the switching member; an elastic member, the elastic member being arranged in the inner space of the switching member; and a magnet incorporated in the structural portion of the shaft, wherein the magnet is arranged to be spaced apart from the axis of the shaft, The shaft can move relative to the switching member through the opening of the switching member base against the elastic force of the elastic member.

2. The blade receiving member assembly according to claim 1, in, The elastic member is connected to the shaft so as to allow the shaft to move along the axis of the shaft against the elastic force.

3. The blade receiving member assembly according to claim 2, in, The elastic member is connected to the shaft and is partially disposed inside the shaft.

4. The blade receiving member assembly according to claim 2, in, The elastic member is connected to the shaft and is arranged to partially surround the shaft.

5. The blade receiving member assembly according to claim 2, in, When the elastic member connected to the shaft is not in a compressed position, the surface of the magnet is located at the same plane as the base of the switching member.

6. The blade receiver assembly according to claim 1, in, The structural portion has a larger diameter than the body receiver portion.

7. The blade receiver assembly according to claim 1, in, The blade receiver assembly also includes a support assembly, and the switch base includes a corresponding support assembly opening for the support assembly.

8. The blade receiver assembly according to claim 1, in, The body receiver portion includes a twist lock mechanism.

9. The blade receiver assembly according to claim 1, in, The switching member cover includes a step portion supporting the elastic member, wherein the elastic member surrounds the step portion.

10. The blade receiver assembly according to claim 1, in, The shaft includes a flange at the structural portion for preventing the shaft from falling off the switching member.

11. A cutting device, include: a body including a handle and a blade assembly retaining member; Rotating blades; A blade receiver assembly according to any preceding claim, wherein the body receiver portion is releasably connectable to the blade assembly retaining member.

12. The cutting device according to claim 11, in, The rotary blade is arranged to be fitted between the body receiver portion and the switch base and to rotate between the body receiver portion and the switch base.

13. The cutting device according to claim 11, in, The rotary blade is rotatably arranged on the shaft and between the magnet and the body receiver portion, wherein a magnetic force attracts the rotary blade and prevents the rotary blade from slipping off the shaft.

14. The cutting device according to claim 11, in, When the elastic member connected to the shaft is compressed, the shaft is arranged to slide along the axis of the shaft, thereby allowing the distance between the magnet and the rotating blade to increase and the magnetic force to weaken.

15. The cutting device according to claim 11, in, The switching member is rotatable, and the body receiving member portion including the twist locking mechanism is arranged so that: in one position, the body receiving member portion is locked to the blade assembly retaining member; and, in another position, the body receiving member portion is slid into / out of the blade assembly retaining member in a releasable manner.

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