US20020029986A1 - Blade case - Google Patents
Blade case Download PDFInfo
- Publication number
- US20020029986A1 US20020029986A1 US09/950,880 US95088001A US2002029986A1 US 20020029986 A1 US20020029986 A1 US 20020029986A1 US 95088001 A US95088001 A US 95088001A US 2002029986 A1 US2002029986 A1 US 2002029986A1
- Authority
- US
- United States
- Prior art keywords
- blade
- holding means
- center hole
- case
- bottom wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000004743 Polypropylene Substances 0.000 claims description 5
- -1 polypropylene Polymers 0.000 claims description 5
- 229920001155 polypropylene Polymers 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 5
- 239000004065 semiconductor Substances 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 229920003002 synthetic resin Polymers 0.000 description 3
- 239000000057 synthetic resin Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000006061 abrasive grain Substances 0.000 description 2
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
- B65D65/44—Applications of resilient shock-absorbing materials, e.g. foamed plastics material, honeycomb material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
- B65D85/02—Containers, packaging elements or packages, specially adapted for particular articles or materials for annular articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
- B25H3/00—Storage means or arrangements for workshops facilitating access to, or handling of, work tools or instruments
- B25H3/006—Storage means specially adapted for one specific hand apparatus, e.g. an electric drill
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D43/00—Lids or covers for rigid or semi-rigid containers
- B65D43/14—Non-removable lids or covers
- B65D43/16—Non-removable lids or covers hinged for upward or downward movement
- B65D43/162—Non-removable lids or covers hinged for upward or downward movement the container, the lid and the hinge being made of one piece
Definitions
- the present invention relates to a blade case suitable for storing an annular blade, particularly a washer type blade.
- a circuit such as an IC or LSI is each formed in a large number of regions arranged in a lattice form on the surface of a substantially disk-like semiconductor wafer and each region having the circuit formed therein is diced along predetermined cutting lines to produce semiconductor chips.
- the dicing machine for cutting the semiconductor wafer is provided with an annular blade, as a cutting means, mounted to a rotary spindle.
- this blade include a blade produced by binding diamond abrasive grains with a resin bond and having a thickness of around 100 ⁇ m and a blade produced by binding diamond abrasive grains with nickel plating and having a thickness of around 20 ⁇ m. Since all of them are easily broken due to small thickness, they are stored in a hard case and carefully handled until they are mounted to the rotary spindle.
- a blade case heretofore used comprises a circular holding means and a circular cover means to meet a shape of the annular blade, it is liable to roll. Therefore, there is a possibility that the blade case falls from a table and the blade stored therein may be broken.
- the holding means and the cover means are constructed separately and secured together by an adhesive tape after the blade is stored. Therefore, when the blade is to be mounted to the rotary spindle of the dicing machine, it takes time and labor to handle it, thereby reducing working efficiency and causing such a problem that the blade may be fallen and broken.
- the present applicant proposes a blade case in which a holding means having a center hole support portion to which the center hole of a blade is be fitted and a cover means are formed as a unitary structure through a hinge and a side portion including at least the hinge is formed straight.
- This blade case is disclosed in JP-A 8-323545.
- a blade case for storing an annular blade having a center hole which comprises a holding means having a bottom wall and a side wall formed upright from the outer periphery of the bottom wall and a cover means having a top wall and a side wall extending downward from the outer periphery of the top wall, the side wall being connected with the side wall constituting the holding means by a hinge so that the blade case can be opened or closed, wherein
- the blade case further comprises:
- a blade support means including a center hole support portion which is provided on the center top surface of the bottom wall of the holding means and to which the center hole of the blade is fitted and a blade supporting portion, formed on the outside of the center hole support portion, for placing the blade fitted to the center hole support portion;
- a blade pressing-down means which is provided on the cover means and presses down the blade placed on the blade supporting portion, in a closed state that the holding means is closed with the cover means;
- a locking means which are formed on the side wall of the holding means and the side wall of the cover means and keep the closed state that the holding means is closed with the cover means.
- the above blade pressing-down means comprises a blade pressing-down portion for pressing down the blade and a spring means for urging the blade pressing-down portion.
- the center hole support portion and the blade supporting portion constituting the above blade support means are formed as a unitary structure and can be attached to and detached from the bottom wall of the above holding means.
- the peripheries of the above holding means and cover means have at least one straight portion and the holding means and the cover means are connected to each other by a hinge at the straight portion so that the blade case can be opened or closed and that a non-circular depression is formed in the bottom wall of the above holding means and a non-circular protrusion to be fitted to the non-circular depression is formed on the top wall of the above cover means.
- the holding means, cover means and hinge are molded from polypropylene as a unitary structure.
- FIG. 1 is a perspective view of an embodiment of a blade case constituted according to the present invention
- FIG. 2 is a sectional view of the blade case shown in FIG. 1;
- FIG. 3 is a sectional view showing a state of a blade being stored in the blade case shown in FIG. 1;
- FIG. 4 is a perspective view of a blade pressing-down means provided in the blade case shown in FIG. 1;
- FIG. 5 is a perspective view of another embodiment of a blade support means provided in the blade case shown in FIG. 1.
- FIG. 1 is a perceptive view of a blade case 2 constituted according to the present invention in a state a cover means thereof being opened and a washer type blade 10 to be stored in the blade case
- FIG. 2 is a sectional view of the blade case shown in FIG. 1.
- the blade case 2 in the illustrated embodiment comprises a holding means 3 and a cover means 4 connected to the holding means 3 by a hinge 5 so that it can be opened or closed and is molded from a suitable synthetic resin as a unitary structure.
- the synthetic resin for the integrated molding of the blade case 2 is desirably polypropylene which allows to be recycled.
- the holding means 3 has a bottom wall 31 and a side wall 32 formed upright from the periphery of the bottom wall 31 .
- the periphery of the bottom wall 31 consists of an arcuate portion 311 , parallel portions 312 and 312 extending from both ends of the arcuate portion 311 in parallel to each other and a straight portion 313 connecting the parallel portions 312 and 312 .
- the side wall 32 also has an arcuate portion 321 corresponding to the arcuate portion 311 of the bottom wall 31 , parallel portions 322 and 322 corresponding to the parallel portions 312 and 312 of the bottom wall 31 and a straight portion 323 corresponding to the straight portion 313 of the bottom wall 31 .
- a blade support means 33 for supporting a blade is provided on the center top surface of the bottom wall 31 formed as described above.
- the blade support means 33 consists of a center hole support portion 331 which protrude from the top of the bottom wall 31 and to which the center hole 10 a of the blade 10 is fitted and a blade support portion 332 which protrudes from the top of the bottom wall 31 on the outside of the center hole support portion 331 and places the blade 10 fitted to the center hole support portion 331 .
- the blade support means 33 is molded, as a unitary structure, together with the bottom wall 31 of the holding means 3 .
- the center hole support portion 331 are formed by dividing an annular protruding portion into three by three escape depressions 332 a provided at angular intervals of about 120° in the illustrated embodiment and the outer peripheral surfaces thereof are formed as arcuate surfaces having a radius corresponding to the center hole 10 a of the blade 10 .
- the three escape depressions 332 a are provided to prevent an interference with leg portions constituting a blade pressing-down means, that is described later.
- the blade support portion 332 provided on the outside of the center hole support portion 331 is circular and has an outer diameter smaller than the outer diameter of the blade 10 and a height smaller than the height of the center hole support portion 331 . In the embodiment shown in FIG. 1 and FIG.
- a non-circular depression 314 shaped like letter D having a straight portion 314 a is formed in the center portion of the under surface of the bottom wall 31 .
- an escape hole 315 for preventing an interference with a stopper which constitutes the blade pressing-down means, that will be described later is formed in the center portion of the bottom wall 31 .
- the above cover means 4 has a top wall 41 and a side wall 42 extending downward from the periphery of the top wall 41 .
- the top wall 41 is formed substantially the same in shape as the bottom wall 31 constituting the above holding means 3 and the periphery thereof consists of an arcuate portion 411 , parallel portions 412 and 412 extending from both ends of the arcuate portion 411 in parallel to each other and a straight portion 413 connecting the parallel portions 412 and 412 .
- the side wall 42 also has an arcuate portion 421 corresponding to the arcuate portion 411 of the top wall 41 , parallel portions 422 and 422 corresponding to the parallel portions 412 and 412 of the top wall 41 and a straight portion 423 corresponding to the straight portion 413 of the top wall 41 .
- a non-circular D-shaped protrusion 414 having a straight portion 414 a to be fitted to the non-circular D-shaped depression 314 formed in the bottom wall 31 constituting the above holding means 3 is formed on the center top surface of the top wall 41 .
- the depression 314 formed in the bottom wall 31 constituting the holding means 3 is fitted to a protrusion 414 formed on the top wall 41 constituting the cover means 4 of a blade case 2 below, and the protrusion 414 formed on the top wall 41 constituting the cover means 4 is fitted to a depression 314 formed in the bottom wall 31 constituting the holding means 3 of a blade case 2 above so that the blade cases 2 can be piled up without falling off or dislocating.
- the above depression 314 and the above protrusion 414 are shaped like letter D (non-circular) having a straight portion, the rotations of the blade cases which are placed one upon the other with the depression 314 fitted to the protrusion 414 are restricted and the blade cases are kept piled up one upon the other, which is convenient for transportation and storage.
- the blade case 2 which is constituted by the holding means 3 and the cover means 4 has a straight portion at the periphery, it hardly rolls and can be prevented from falling from a table, for example.
- the holding means 3 and cover means 4 constituted as described above are provided with a locking means 6 for keeping a closed state that the holding means 3 is closed with the cover means 4 as shown in FIG. 3.
- the locking means 6 consist of a locking projection 61 formed on a flat portion 321 a provided at the center of the arcuate portion 321 constituting the side wall 32 of the holding means 3 and a locking piece 62 to be engaged with the locking projection 61 in the above closed state, which is provided at the center of the arcuate portion 421 constituting the side wall 42 of the cover means 4 .
- the lower end of the locking piece 61 is dislocated outward to disengage the locking projection 61 from the locking piece 62 .
- the blade case 2 in the illustrated embodiment is provided with the blade pressing-down means 7 which is formed on the cover means 4 and presses the blade 10 mounted on the blade support portion 332 of the blade support means 33 in a close state that the holding means 3 is closed with the cover means 4 as shown in FIG. 3.
- This blade pressing-down means 7 will be described also with reference to FIG. 4.
- the blade pressing-down means 7 has an annular blade pressing-down portion 71 having substantially the same outer diameter as the blade support portion 332 provided on the bottom wall 31 of the above holding means 3 , a center support portion 72 provided at the center of the above annular blade pressing-down portion 71 , three leg portions 73 provided at angular intervals of approximately 120° to connect the center support portion 72 and the annular blade pressing-down portion 71 , and three spring means 74 projecting slantwise upward from the center support portion 72 and provided between adjacent leg portions 73 .
- These portions are molded, as a unitary structure, from a synthetic resin such as polypropylene.
- each of the above three leg portions 73 is smaller than the width of the three escape depressions 332 a provided between adjacent center hole support portion 331 and the leg portions 73 are fitted into the respective depressions 332 a in a closed state that the holding means 3 is closed with the cover means 4 as shown in FIG. 3.
- a fitting hole 721 to be fitted to a support column 415 projecting from the center portion of the under surface of the top wall 41 constituting the cover means 4 is formed in the center of the center support portion 72 constituting the above blade pressing-down means 7 .
- the fitting hole 721 of the thus constituted blade pressing-down means 7 is fitted to the support column 415 while the ends of the spring means 74 being directed toward the top wall 41 side.
- the blade case 2 in the embodiment shown in FIGS. 1 to 4 is constituted as described above, and the storing of the blade 10 will be described hereinafter.
- the center hole 10 a of the blade 10 is fitted to the center hole support portion 331 formed on the bottom wall 31 of the holding means 3 to place the under surface of the blade 10 on the blade support portion 332 .
- the locking piece 62 provided on the cover means 4 engages with the locking projection 61 provided on the holding means 3 to keep the closed state.
- the annular blade pressing-down portion 71 constituting the blade pressing-down means 7 presses down the top surface of the blade 10 placed on the blade support portion 332 by the spring action of the spring means 74 . Therefore, the blade 10 sandwiched between the blade support portion 332 and the blade pressing-down portion 71 is secured in the blade case 2 .
- the holding means 3 is closed with the cover means 4 to close the blade case 2
- the three leg portions 73 of the blade pressing-down means 7 are fitted into the three escape depressions 332 a formed between adjacent center hole support portions 331 , and the stopper 75 of the blade pressing-down means 7 is fitted to the escape hole 315 formed in the bottom wall 31 to prevent an interference with the leg portions 73 .
- a blade support means 8 in the embodiment shown in FIG. 5 is constructed separately from the bottom wall 31 constituting the holding means 3 . That is, the blade support means 8 has a disk-like base portion 80 and three center hole support portions 81 which are formed on the top surface of the base portion 80 by dividing an annular protruded portion into three by three escape depressions 811 provided at angular intervals of substantially 120°.
- the outer peripheral surfaces of the three center hole support portions 81 are formed as an arcuate surface having a radius corresponding to the radius of the center hole 10 a of the blade 10 .
- a portion on the outside of the center hole support portions 81 of the base portion 80 functions as a blade supporting portion 82 .
- Three support holes 801 are formed in the base portion 80 of the thus formed blade support means 8 .
- Three support projections 316 are provided on the center top surface of the bottom wall 31 constituting the holding means 3 , corresponding to the three support holes 801 .
- the three support holes 801 formed in the base portion 80 are fitted to the respective three support projections 316 provided on the bottom wall 31 of the holding means 3 so that the blade support means 8 can be mounted on the holding means 3 .
- An escape hole 802 is formed in the center of the base portion 80 .
- the blade support means 8 is formed separately from the holding means 3 and can be attached to or detached from the holding means 3 in the blade case in the illustrated embodiment, several types of blade support means 8 which differ in the outer diameter of the center hole support portion 81 are prepared and exchanged according to the diameter of the center hole of the blade, thereby making it possible to store blades which differ in the diameter of the center hole securely without causing looseness. It is preferable that several types of blade pressing-down means 7 which differ in the outer diameter of the blade pressing-down portion 71 are also prepared and exchanged correspondingly to a blade to be stored.
- the blade case of the present invention comprises a blade pressing-down means for pressing down the blade placed on the blade supporting portion in a closed state that the holding means is closed with the cover means, the blade is sandwiched between the blade support portion and the blade pressing-down means and reliably secured in a state of being held in the blade case. Therefore, as the blade securely fixed in the blade case has no looseness, the blade can be prevented from breakage during transportation.
- the above blade pressing-down means has a blade pressing-down portion for pressing down the blade and a spring means for urging the blade pressing portion so that the blade is pressed by the spring force of the spring means, whereby the blade is fixed more surely.
- the center hole support portion and the blade supporting portion constituting the above blade support means are formed as a unitary structure, and can be attached to or detached from the bottom wall of the holding means, several types of the blade support means which differ in the diameter of the center hole support portion are prepared and suitably selected according to the diameter of the center hole of the blade, thereby making it possible to store blades which differ in the diameter of the center hole.
- the present invention is more economical than the prior art in which it is necessary to prepare several types of blade cases corresponding to the diameters of the center holes of blades to be stored.
- the outer peripheries of the above holding means and cover means have at least one straight portion, and the straight portions of the holding means and the cover means are connected to each other by a hinge so that the blade case can be opened or closed. Therefore, as a straight portion is formed at the outer periphery of the blade case, the blade case hardly rolls and can be prevented from falling from a table, for example.
- cover means and hinge are molded as a unitary structure from polypropylene, they can be recycled.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
- Workshop Equipment, Work Benches, Supports, Or Storage Means (AREA)
- Packaging Frangible Articles (AREA)
Abstract
A blade case comprising a holding means having a bottom wall and a side wall formed upright from the outer periphery of the bottom wall and a cover means having a top wall and a side wall extending downward from the outer periphery of the top wall, the holding means and the cover means being connected to each other by a hinge to open or close the blade case, comprising
a blade support means which is provided on the center portion of a top surface of the bottom wall of the holding means and comprises a center hole support portion to be fitted to the center hole of a blade and a blade supporting portion, provided on the outside of the center hole support portion, for placing the blade fitted to the center hole support portion; and
a blade pressing-down means which is provided on the cover means and presses down the blade placed on the blade supporting portion in a closed state that the holding means is closed with the cover means.
Description
- The present invention relates to a blade case suitable for storing an annular blade, particularly a washer type blade.
- In the production process of a semiconductor device, a circuit such as an IC or LSI is each formed in a large number of regions arranged in a lattice form on the surface of a substantially disk-like semiconductor wafer and each region having the circuit formed therein is diced along predetermined cutting lines to produce semiconductor chips. Thus, the dicing machine for cutting the semiconductor wafer is provided with an annular blade, as a cutting means, mounted to a rotary spindle. Examples of this blade include a blade produced by binding diamond abrasive grains with a resin bond and having a thickness of around 100 μm and a blade produced by binding diamond abrasive grains with nickel plating and having a thickness of around 20 μm. Since all of them are easily broken due to small thickness, they are stored in a hard case and carefully handled until they are mounted to the rotary spindle.
- As a blade case heretofore used comprises a circular holding means and a circular cover means to meet a shape of the annular blade, it is liable to roll. Therefore, there is a possibility that the blade case falls from a table and the blade stored therein may be broken. The holding means and the cover means are constructed separately and secured together by an adhesive tape after the blade is stored. Therefore, when the blade is to be mounted to the rotary spindle of the dicing machine, it takes time and labor to handle it, thereby reducing working efficiency and causing such a problem that the blade may be fallen and broken.
- To eliminate the above problems, the present applicant proposes a blade case in which a holding means having a center hole support portion to which the center hole of a blade is be fitted and a cover means are formed as a unitary structure through a hinge and a side portion including at least the hinge is formed straight. This blade case is disclosed in JP-A 8-323545.
- In use of the blade case disclosed in JP-A 8-323545, there is no problem when a so-called hub blade, which is produced by forming a blade at the periphery of a hub to be mounted to the rotary spindle of a dicing machine, is stored in the blade case, because the blade case can have a structure that the hub can be pressed by the inner wall of a cover means. However, when a so-called washer type blade having no hub for mounting the blade is stored in the blade case, the blade is difficult to fix securely and looseness is produced in the blade case, so that the blade may be broken during transportation. Further, to store blades which differ in the diameter of a center hole, a problem arises in that a plurality of blade cases having center hole support portion corresponding to the types of diameter of the center holes of the blades must be prepared.
- It is an object of the present invention to provide a blade case capable of fixing reliably even a washer type blade therein in a state of it being stored in the case.
- It is another object of the present invention to provide a blade case capable of storing blades which differ in the diameter of a center hole by exchanging a part of the component.
- To attain the above objects, according to the present invention, there is provided a blade case for storing an annular blade having a center hole, which comprises a holding means having a bottom wall and a side wall formed upright from the outer periphery of the bottom wall and a cover means having a top wall and a side wall extending downward from the outer periphery of the top wall, the side wall being connected with the side wall constituting the holding means by a hinge so that the blade case can be opened or closed, wherein
- the blade case further comprises:
- a blade support means including a center hole support portion which is provided on the center top surface of the bottom wall of the holding means and to which the center hole of the blade is fitted and a blade supporting portion, formed on the outside of the center hole support portion, for placing the blade fitted to the center hole support portion;
- a blade pressing-down means which is provided on the cover means and presses down the blade placed on the blade supporting portion, in a closed state that the holding means is closed with the cover means; and
- a locking means which are formed on the side wall of the holding means and the side wall of the cover means and keep the closed state that the holding means is closed with the cover means.
- The above blade pressing-down means comprises a blade pressing-down portion for pressing down the blade and a spring means for urging the blade pressing-down portion. Preferably, the center hole support portion and the blade supporting portion constituting the above blade support means are formed as a unitary structure and can be attached to and detached from the bottom wall of the above holding means. Further it is preferable that the peripheries of the above holding means and cover means have at least one straight portion and the holding means and the cover means are connected to each other by a hinge at the straight portion so that the blade case can be opened or closed and that a non-circular depression is formed in the bottom wall of the above holding means and a non-circular protrusion to be fitted to the non-circular depression is formed on the top wall of the above cover means. Preferably, the holding means, cover means and hinge are molded from polypropylene as a unitary structure.
- FIG. 1 is a perspective view of an embodiment of a blade case constituted according to the present invention;
- FIG. 2 is a sectional view of the blade case shown in FIG. 1;
- FIG. 3 is a sectional view showing a state of a blade being stored in the blade case shown in FIG. 1;
- FIG. 4 is a perspective view of a blade pressing-down means provided in the blade case shown in FIG. 1; and
- FIG. 5 is a perspective view of another embodiment of a blade support means provided in the blade case shown in FIG. 1.
- Preferred embodiments of a blade case constituted according to the present invention will be described in detail hereinafter with reference to the accompanying drawings.
- FIG. 1 is a perceptive view of a
blade case 2 constituted according to the present invention in a state a cover means thereof being opened and awasher type blade 10 to be stored in the blade case, and FIG. 2 is a sectional view of the blade case shown in FIG. 1. - The
blade case 2 in the illustrated embodiment comprises aholding means 3 and a cover means 4 connected to theholding means 3 by ahinge 5 so that it can be opened or closed and is molded from a suitable synthetic resin as a unitary structure. The synthetic resin for the integrated molding of theblade case 2 is desirably polypropylene which allows to be recycled. - The holding means3 has a
bottom wall 31 and aside wall 32 formed upright from the periphery of thebottom wall 31. The periphery of thebottom wall 31 consists of anarcuate portion 311,parallel portions arcuate portion 311 in parallel to each other and astraight portion 313 connecting theparallel portions side wall 32 also has anarcuate portion 321 corresponding to thearcuate portion 311 of thebottom wall 31,parallel portions parallel portions bottom wall 31 and astraight portion 323 corresponding to thestraight portion 313 of thebottom wall 31. A blade support means 33 for supporting a blade is provided on the center top surface of thebottom wall 31 formed as described above. The blade support means 33 consists of a centerhole support portion 331 which protrude from the top of thebottom wall 31 and to which thecenter hole 10 a of theblade 10 is fitted and ablade support portion 332 which protrudes from the top of thebottom wall 31 on the outside of the centerhole support portion 331 and places theblade 10 fitted to the centerhole support portion 331. In the embodiment shown in FIG. 1 and FIG. 2, the blade support means 33 is molded, as a unitary structure, together with thebottom wall 31 of the holding means 3. The centerhole support portion 331 are formed by dividing an annular protruding portion into three by threeescape depressions 332 a provided at angular intervals of about 120° in the illustrated embodiment and the outer peripheral surfaces thereof are formed as arcuate surfaces having a radius corresponding to thecenter hole 10 a of theblade 10. The threeescape depressions 332 a are provided to prevent an interference with leg portions constituting a blade pressing-down means, that is described later. Theblade support portion 332 provided on the outside of the centerhole support portion 331 is circular and has an outer diameter smaller than the outer diameter of theblade 10 and a height smaller than the height of the centerhole support portion 331. In the embodiment shown in FIG. 1 and FIG. 2, anon-circular depression 314 shaped like letter D having astraight portion 314 a is formed in the center portion of the under surface of thebottom wall 31. In the embodiment shown in FIG. 1 and FIG. 2, anescape hole 315 for preventing an interference with a stopper which constitutes the blade pressing-down means, that will be described later is formed in the center portion of thebottom wall 31. - The above cover means4 has a
top wall 41 and aside wall 42 extending downward from the periphery of thetop wall 41. Thetop wall 41 is formed substantially the same in shape as thebottom wall 31 constituting theabove holding means 3 and the periphery thereof consists of anarcuate portion 411,parallel portions arcuate portion 411 in parallel to each other and astraight portion 413 connecting theparallel portions side wall 42 also has anarcuate portion 421 corresponding to thearcuate portion 411 of thetop wall 41,parallel portions parallel portions top wall 41 and astraight portion 423 corresponding to thestraight portion 413 of thetop wall 41. In the embodiment shown in FIG. 1 and FIG. 2, a non-circular D-shaped protrusion 414 having astraight portion 414 a to be fitted to the non-circular D-shaped depression 314 formed in thebottom wall 31 constituting theabove holding means 3 is formed on the center top surface of thetop wall 41. Therefore, when a plurality ofblade cases 2 are piled up together, thedepression 314 formed in thebottom wall 31 constituting theholding means 3 is fitted to aprotrusion 414 formed on thetop wall 41 constituting the cover means 4 of ablade case 2 below, and theprotrusion 414 formed on thetop wall 41 constituting thecover means 4 is fitted to adepression 314 formed in thebottom wall 31 constituting theholding means 3 of ablade case 2 above so that theblade cases 2 can be piled up without falling off or dislocating. Since theabove depression 314 and theabove protrusion 414 are shaped like letter D (non-circular) having a straight portion, the rotations of the blade cases which are placed one upon the other with thedepression 314 fitted to theprotrusion 414 are restricted and the blade cases are kept piled up one upon the other, which is convenient for transportation and storage. - As the
straight portion 323 of theside wall 32 of the above-described holding means 3 and thestraight portion 423 of theside wall 42 of the above-described cover means 4 are connected to each other by thehinge 5 so that theblade case 2 can be opened or closed, theblade case 2 which is constituted by theholding means 3 and the cover means 4 has a straight portion at the periphery, it hardly rolls and can be prevented from falling from a table, for example. - The holding means3 and cover means 4 constituted as described above are provided with a locking means 6 for keeping a closed state that the
holding means 3 is closed with the cover means 4 as shown in FIG. 3. The locking means 6 consist of alocking projection 61 formed on aflat portion 321 a provided at the center of thearcuate portion 321 constituting theside wall 32 of theholding means 3 and alocking piece 62 to be engaged with thelocking projection 61 in the above closed state, which is provided at the center of thearcuate portion 421 constituting theside wall 42 of the cover means 4. To release the above closed state of the locking means 6, the lower end of thelocking piece 61 is dislocated outward to disengage thelocking projection 61 from thelocking piece 62. - The
blade case 2 in the illustrated embodiment is provided with the blade pressing-downmeans 7 which is formed on the cover means 4 and presses theblade 10 mounted on theblade support portion 332 of the blade support means 33 in a close state that theholding means 3 is closed with the cover means 4 as shown in FIG. 3. This blade pressing-down means 7 will be described also with reference to FIG. 4. The blade pressing-down means 7 has an annular blade pressing-downportion 71 having substantially the same outer diameter as theblade support portion 332 provided on thebottom wall 31 of theabove holding means 3, acenter support portion 72 provided at the center of the above annular blade pressing-downportion 71, threeleg portions 73 provided at angular intervals of approximately 120° to connect thecenter support portion 72 and the annular blade pressing-downportion 71, and three spring means 74 projecting slantwise upward from thecenter support portion 72 and provided betweenadjacent leg portions 73. These portions are molded, as a unitary structure, from a synthetic resin such as polypropylene. The width of each of the above threeleg portions 73 is smaller than the width of the threeescape depressions 332 a provided between adjacent centerhole support portion 331 and theleg portions 73 are fitted into therespective depressions 332 a in a closed state that theholding means 3 is closed with the cover means 4 as shown in FIG. 3. Afitting hole 721 to be fitted to asupport column 415 projecting from the center portion of the under surface of thetop wall 41 constituting the cover means 4 is formed in the center of thecenter support portion 72 constituting the above blade pressing-down means 7. Thefitting hole 721 of the thus constituted blade pressing-down means 7 is fitted to thesupport column 415 while the ends of the spring means 74 being directed toward thetop wall 41 side. By press fitting thestopper 75 into astopper hole 415 a formed in the center of thesupport column 415, the blade pressing-down means 7 can be secured to the cover means 4. - The
blade case 2 in the embodiment shown in FIGS. 1 to 4 is constituted as described above, and the storing of theblade 10 will be described hereinafter. In a state that the cover means 4 of theblade case 2 is opened as shown in FIG. 1 or FIG. 2, thecenter hole 10 a of theblade 10 is fitted to the centerhole support portion 331 formed on thebottom wall 31 of the holding means 3 to place the under surface of theblade 10 on theblade support portion 332. When the cover means 4 is turned on thehinge 5 and superposed on the holding means 3 as shown in FIG. 3 to close theblade case 2, the lockingpiece 62 provided on the cover means 4 engages with the lockingprojection 61 provided on the holding means 3 to keep the closed state. At this point, the annular blade pressing-down portion 71 constituting the blade pressing-down means 7 presses down the top surface of theblade 10 placed on theblade support portion 332 by the spring action of the spring means 74. Therefore, theblade 10 sandwiched between theblade support portion 332 and the blade pressing-down portion 71 is secured in theblade case 2. When the holding means 3 is closed with the cover means 4 to close theblade case 2, the threeleg portions 73 of the blade pressing-down means 7 are fitted into the threeescape depressions 332 a formed between adjacent centerhole support portions 331, and thestopper 75 of the blade pressing-down means 7 is fitted to theescape hole 315 formed in thebottom wall 31 to prevent an interference with theleg portions 73. - A description is subsequently given of another embodiment of the blade support means provided on the holding means3 with reference to FIG. 5.
- A blade support means8 in the embodiment shown in FIG. 5 is constructed separately from the
bottom wall 31 constituting the holding means 3. That is, the blade support means 8 has a disk-like base portion 80 and three centerhole support portions 81 which are formed on the top surface of thebase portion 80 by dividing an annular protruded portion into three by threeescape depressions 811 provided at angular intervals of substantially 120°. The outer peripheral surfaces of the three centerhole support portions 81 are formed as an arcuate surface having a radius corresponding to the radius of thecenter hole 10 a of theblade 10. A portion on the outside of the centerhole support portions 81 of thebase portion 80 functions as ablade supporting portion 82. Three support holes 801 are formed in thebase portion 80 of the thus formed blade support means 8. Threesupport projections 316 are provided on the center top surface of thebottom wall 31 constituting the holding means 3, corresponding to the three support holes 801. The threesupport holes 801 formed in thebase portion 80 are fitted to the respective threesupport projections 316 provided on thebottom wall 31 of the holding means 3 so that the blade support means 8 can be mounted on the holding means 3. Anescape hole 802 is formed in the center of thebase portion 80. Thus, since the blade support means 8 is formed separately from the holding means 3 and can be attached to or detached from the holding means 3 in the blade case in the illustrated embodiment, several types of blade support means 8 which differ in the outer diameter of the centerhole support portion 81 are prepared and exchanged according to the diameter of the center hole of the blade, thereby making it possible to store blades which differ in the diameter of the center hole securely without causing looseness. It is preferable that several types of blade pressing-down means 7 which differ in the outer diameter of the blade pressing-down portion 71 are also prepared and exchanged correspondingly to a blade to be stored. - Since the blade case of the present invention is constituted as described above, the following function and effect are obtained.
- That is, according to the present invention, since the blade case of the present invention comprises a blade pressing-down means for pressing down the blade placed on the blade supporting portion in a closed state that the holding means is closed with the cover means, the blade is sandwiched between the blade support portion and the blade pressing-down means and reliably secured in a state of being held in the blade case. Therefore, as the blade securely fixed in the blade case has no looseness, the blade can be prevented from breakage during transportation.
- The above blade pressing-down means has a blade pressing-down portion for pressing down the blade and a spring means for urging the blade pressing portion so that the blade is pressed by the spring force of the spring means, whereby the blade is fixed more surely.
- Since the center hole support portion and the blade supporting portion constituting the above blade support means are formed as a unitary structure, and can be attached to or detached from the bottom wall of the holding means, several types of the blade support means which differ in the diameter of the center hole support portion are prepared and suitably selected according to the diameter of the center hole of the blade, thereby making it possible to store blades which differ in the diameter of the center hole. Thus, since only blade support means may be prepared correspondingly to the different diameters of the center holes of the blades, the present invention is more economical than the prior art in which it is necessary to prepare several types of blade cases corresponding to the diameters of the center holes of blades to be stored.
- Further, the outer peripheries of the above holding means and cover means have at least one straight portion, and the straight portions of the holding means and the cover means are connected to each other by a hinge so that the blade case can be opened or closed. Therefore, as a straight portion is formed at the outer periphery of the blade case, the blade case hardly rolls and can be prevented from falling from a table, for example.
- Since a non-circular depression is formed in the bottom wall of the above holding means and a non-circular protrusion to be fitted to the depression is formed on the top wall of the above cover means, when several blade cases are piled up, the rotations of the blade cases of which the depression and protrusion are fitted to each other are restricted, thereby making it possible to keep the blade cases piled up together, which is convenient for transportation and storage.
- According to the present invention, as the above holding means, cover means and hinge are molded as a unitary structure from polypropylene, they can be recycled.
Claims (6)
1. A blade case for storing an annular blade having a center hole, which comprises a holding means having a bottom wall and a side wall formed upright from the periphery of the bottom wall and a cover means having a top wall and a side wall extending downward from the periphery of the top wall, the side wall being connected to the side wall constituting the holding means by a hinge so that the blade case can be opened or closed, wherein
the blade case further comprises:
a blade support means including a center hole support portion which is provided on the center top surface of the bottom wall of the holding means and to which the center hole of the blade is fitted and a blade supporting portion, formed on the outside of the center hole support portion, for placing the blade fitted to the center hole support portion;
a blade pressing-down means which is provided on the cover means and presses down the blade placed on the blade supporting portion in a closed state that the holding means is closed with the cover means; and
a locking means which is formed on the side wall of the holding means and the side wall of the cover means and keep the closed state that the holding means is closed with the cover means.
2. The blade case of claim 1 , wherein the blade pressing-down means comprises a blade pressing-down portion for pressing down the blade and a spring means for urging the blade pressing-down portion.
3. The blade case of claim 1 , wherein the center hole support portion and the blade supporting portion constituting the blade support means are formed as a unitary structure and can be attached to or detached from the bottom wall of the holding means.
4. The blade case of claim 1 , wherein the peripheries of the holding means and the cover means have at least one straight portion, and the holding means and the cover means are connected to each other by a hinge at the straight portion so that the blade case can be opened or closed.
5. The blade case of claim 1 , wherein a non-circular depression is formed in the bottom wall of the holding means and a non-circular protrusion to be fitted to the depression is formed on the top wall of the cover means.
6. The blade case of claim 1 , wherein the holding means, cover means and hinge are molded from polypropylene as a unitary structure.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000-279880 | 2000-09-14 | ||
JP2000279880A JP4564638B2 (en) | 2000-09-14 | 2000-09-14 | Blade case |
Publications (2)
Publication Number | Publication Date |
---|---|
US20020029986A1 true US20020029986A1 (en) | 2002-03-14 |
US6446797B1 US6446797B1 (en) | 2002-09-10 |
Family
ID=18764818
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/950,880 Expired - Lifetime US6446797B1 (en) | 2000-09-14 | 2001-09-13 | Blade case |
Country Status (3)
Country | Link |
---|---|
US (1) | US6446797B1 (en) |
JP (1) | JP4564638B2 (en) |
KR (1) | KR100782364B1 (en) |
Cited By (7)
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EP1702865A1 (en) * | 2005-03-15 | 2006-09-20 | Carl Freudenberg KG | Device for packaging a washer |
CN104625868A (en) * | 2015-01-30 | 2015-05-20 | 绵阳宏信塑胶制品有限公司 | Novel tool box and manufacturing and using method thereof |
US9238300B2 (en) * | 2014-03-09 | 2016-01-19 | Eupin Wang | Container for storing multiple saw blades |
CN108908243A (en) * | 2018-07-10 | 2018-11-30 | 芜湖恒跃智能装备有限公司 | It is a kind of for ring flange disassembly after classification processing clamp fixture |
CN109465974A (en) * | 2017-09-07 | 2019-03-15 | 株式会社迪思科 | Cutting tool provides device and cutting tool container |
WO2020063754A1 (en) * | 2018-09-29 | 2020-04-02 | 南京德朔实业有限公司 | Tool box |
CN114055423A (en) * | 2021-11-18 | 2022-02-18 | 宁波佰特工具有限公司 | Tool box |
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Publication number | Priority date | Publication date | Assignee | Title |
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US6729468B1 (en) * | 2003-03-28 | 2004-05-04 | Thomas N Dobmeier | Circular saw blade holder |
US7191898B1 (en) * | 2003-09-04 | 2007-03-20 | Union Rich Usa, Llc | Saw blade case |
US20070023303A1 (en) * | 2005-07-27 | 2007-02-01 | Garry Templeton | Packaging |
WO2008068282A1 (en) * | 2006-12-07 | 2008-06-12 | Montres Breguet Sa | Protective box for transporting or storing a part in the form of a plate pierced by an opening |
JP4989304B2 (en) * | 2007-05-11 | 2012-08-01 | 株式会社ディスコ | Blade case |
CN101614902B (en) * | 2008-06-26 | 2011-12-21 | 鸿富锦精密工业(深圳)有限公司 | Backlight module assembly device |
US8267752B2 (en) * | 2010-05-13 | 2012-09-18 | Pi-Chao Chang | Knife sharpening device of circular knife |
US8540553B2 (en) * | 2010-10-28 | 2013-09-24 | Jim Bagley | Portable power sharpener for hand held rotary cutter blades |
KR20120074559A (en) * | 2010-12-28 | 2012-07-06 | 삼성전자주식회사 | Package tray for detecting device |
USD782295S1 (en) | 2013-06-21 | 2017-03-28 | John Lee | Saw blade container |
KR200475166Y1 (en) | 2013-11-27 | 2014-11-10 | 한전케이피에스 주식회사 | Gasket storage device |
JP2016097473A (en) * | 2014-11-21 | 2016-05-30 | 株式会社ディスコ | Blade case |
DE102015107096A1 (en) * | 2015-05-06 | 2016-11-10 | C. & E. Fein Gmbh | Accessories packaging |
US20170035165A1 (en) * | 2015-08-05 | 2017-02-09 | Aevoe International Ltd. | Pad for protective cover |
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US11299322B2 (en) * | 2019-10-08 | 2022-04-12 | John Lee | Stackable sawblade containment assembly |
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JPS60195783U (en) * | 1984-06-04 | 1985-12-27 | 日本理器株式会社 | Rotary blade packaging container |
US4903829A (en) * | 1988-10-07 | 1990-02-27 | Clemens Philip M | Container for compact disc |
US5078266A (en) * | 1991-03-12 | 1992-01-07 | Rackley Jimmy W | Rotary saw blade housing apparatus |
DE9212275U1 (en) * | 1992-09-11 | 1993-02-11 | Basf Magnetics Gmbh, 6800 Mannheim, De | |
US5366073A (en) * | 1993-08-02 | 1994-11-22 | Jaja, Inc. | Storage container for media records |
JP3783165B2 (en) * | 1995-05-26 | 2006-06-07 | 株式会社ディスコ | Blade case |
US5682988A (en) * | 1996-03-21 | 1997-11-04 | Salisbury; Philip S. | Disc storage case |
US5713463A (en) * | 1996-08-15 | 1998-02-03 | 30G, Inc. | Folding data disk holder |
US5819929A (en) * | 1997-07-21 | 1998-10-13 | Chung; Chih-Wen | CD container storage device |
US5894924A (en) * | 1997-11-25 | 1999-04-20 | Koch; Hans G. | Alternative CD-ROM/DVD packaging device |
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2000
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-
2001
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- 2001-09-14 KR KR1020010056871A patent/KR100782364B1/en active IP Right Grant
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EP1702865A1 (en) * | 2005-03-15 | 2006-09-20 | Carl Freudenberg KG | Device for packaging a washer |
FR2883264A1 (en) * | 2005-03-15 | 2006-09-22 | Meillor Sa Sa | DEVICE FOR PACKAGING A SEAL |
US9238300B2 (en) * | 2014-03-09 | 2016-01-19 | Eupin Wang | Container for storing multiple saw blades |
CN104625868A (en) * | 2015-01-30 | 2015-05-20 | 绵阳宏信塑胶制品有限公司 | Novel tool box and manufacturing and using method thereof |
CN109465974A (en) * | 2017-09-07 | 2019-03-15 | 株式会社迪思科 | Cutting tool provides device and cutting tool container |
CN108908243A (en) * | 2018-07-10 | 2018-11-30 | 芜湖恒跃智能装备有限公司 | It is a kind of for ring flange disassembly after classification processing clamp fixture |
WO2020063754A1 (en) * | 2018-09-29 | 2020-04-02 | 南京德朔实业有限公司 | Tool box |
US11090800B2 (en) | 2018-09-29 | 2021-08-17 | Nanjing Chervon Industry Co., Ltd. | Tool box |
CN114055423A (en) * | 2021-11-18 | 2022-02-18 | 宁波佰特工具有限公司 | Tool box |
Also Published As
Publication number | Publication date |
---|---|
KR100782364B1 (en) | 2007-12-07 |
JP2002086370A (en) | 2002-03-26 |
KR20020021365A (en) | 2002-03-20 |
US6446797B1 (en) | 2002-09-10 |
JP4564638B2 (en) | 2010-10-20 |
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