• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Pocket knife with double blade locking device. Knife consisting of a handle (1) with a longitudinal slot and a hole in the head (165) and a blade (4) with a hole (47), connected by means of a pin (5), which may have a ferrule (3), and has a double locking device (2) with a leaf, the double locking device (2) consisting of a single piece that integrates three areas, with the transition area arched, with the rear area counting with a tongue (221) and a protuberance (222), with the anterior area having a hole (211) and presenting a slot between a posterior area and an anterior area. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2752883A2
    申请号:ES201930665
    申请日:2019-07-18
    公开日:2020-04-06
    发明作者:José Afonso Martins
    申请人:FABRICA DE CUTELARIAS FILMAM Lda；
    IPC主号:
    专利说明:

    [0001]
    [0002] Pocket knife with double blade locking device
    [0003]
    [0004] FIELD OF THE INVENTION
    [0005]
    [0006] The present invention relates to a knife with a double blade locking device, of particular interest to the cutlery industry.
    [0007]
    [0008] PREVIOUS STATE OF THE TECHNIQUE
    [0009]
    [0010] Efforts have been made to develop blades that have a blade locking device designed to prevent unintentional closing of the blade.
    [0011]
    [0012] Many times, it is during this involuntary closing action, when accidents occur, since the fingers that wrap the handle are at the mercy of cutting the blade.
    [0013]
    [0014] It so happens that the now inventor has already participated in the development of protection elements for other devices of this nature, such as the one related to utility model No. 10515.
    [0015]
    [0016] However, the fundamental thing is not only to guarantee that the blade of the knife does not unintentionally close, but also that it does not open accidentally.
    [0017]
    [0018] In addition, seeking a greater efficiency and durability, a new device has been developed, based on the union of various parts, whose design and operation make it possible to achieve these objectives.
    [0019]
    [0020] The blades are usually made with wooden handles and if, when they are new, it is not expected that the blade opens without the help of the user, the truth is that with the wear and tear of use, especially that generated in the slot in the leaf is collected, what can It happens that when this slot is enlarged, they start to produce irregular and involuntary opening of the sheet.
    [0021]
    [0022] On the other hand, wood reacts to factors such as temperature and humidity, and, depending on these values, the blade can be loose in the longitudinal groove of the handle.
    [0023]
    [0024] Thus, with the present device it is intended to have a double locking knife: opening and closing lock.
    [0025]
    [0026] But it is also intended to improve the closing lock device, since the existing ones, and this is usually common, are difficult to operate, since they force the user to exert great pressure with the thumb or to use both hands to operate the palette, a situation that is clearly inadvisable because it involves a risk of cutting the user.
    [0027]
    [0028] It is even intended to take advantage of the existing machines and tools in the cutlery industry, so that the invented knife can be produced at low cost.
    [0029]
    [0030] DESCRIPTION OF THE INVENTION
    [0031]
    [0032] The invented knife consists of a blade and a handle that can be connected by means of a plug
    [0033]
    [0034] To provide protection and greater resistance to the handle head, particularly in cases where the latter is made of less hard wood, it is possible to attach a ferrule.
    [0035]
    [0036] In the present invention, the design of the locking device, i.e., the double blade locking device, is particularly important.
    [0037]
    [0038] It should be noted that this has been possible thanks to the inclusion of a piece developed specifically for this purpose and duly combined with the handle and the other pieces of the knife.
    [0039] The locking device is not only responsible for the closing lock, but also for the opening blocking of the leaf itself, which has been achieved by means of a protrusion.
    [0040]
    [0041] Indeed, this part has been designed in such a way that it allows an easy and comfortable actuation of the locking devices, either when opening or closing the leaf.
    [0042]
    [0043] It was a matter of designing a piece that was not very long, because otherwise it would be necessary to include more than one pin to join the double locking device to the other pieces.
    [0044]
    [0045] It was essential to ensure that the tab, which is a specific part of the locking device - specifically the part operated directly by the user - could be operated with moderate pressure.
    [0046]
    [0047] The aim was for the double locking device to consist of a single piece.
    [0048]
    [0049] It was essential that this part could be obtained through normal cutting operations.
    [0050]
    [0051] After several prototypes of the piece, without having obtained the expected results, it was understood that the solution should go through a locking device that had a wide slot and not simply a cut that would serve to bend an area intended to make the effect of spring, bent resulting from the rotation of that area around an imaginary axis.
    [0052]
    [0053] The spring effect, essential for locking the leaf closure, was achieved basically through the combination of a wide groove and bending that were implemented in the double locking device.
    [0054]
    [0055] For a better understanding of the description, particularly with regard to the figures, the reference numbers of the invention are indicated below:
    [0056] 1 - mango
    [0057] 10 - longitudinal groove
    [0058] 15 - notch
    [0059] 16 - head
    [0060] 165 - head hole
    [0061] 166 - upper part of the head
    [0062] 2 - double locking device
    [0063] ZD - locking device zones
    [0064] ZA - anterior zone
    [0065] 211 - locking device fixing hole
    [0066] 212 - upper part of the anterior zone
    [0067] 213 - upper point of the upper part of the anterior zone
    [0068] ZP - posterior area
    [0069] 221 - tongue
    [0070] 222 - bump
    [0071] 223 - posterior inferior point of posterior zone
    [0072] ZT - transition zone
    [0073] 25 - slot
    [0074] 255 - middle line of the slot
    [0075] 3 - ferrule
    [0076] 35 - ferrule groove
    [0077] 36 - ferrule hole
    [0078] 4 - sheet
    [0079] 45 - rear
    [0080] 46 - tail
    [0081] 47 - hole
    [0082] 48 - Notch
    [0083] 5 - pin
    [0084]
    [0085] Thus, the knife of the invention consists of a handle (1) with a longitudinal groove (10) and with a hole in the head (165) and a blade (4) with a hole (47) connected by means of a pin (5).
    [0086] It is characterized by having a double blade locking device (2), also because this device is made up of a single piece, with three areas of the locking device (ZD): the anterior area (ZA), the posterior area (ZP) and the transition zone (ZT).
    [0087]
    [0088] It is also characterized by presenting, between the anterior zone (ZA) and the posterior zone (ZP), a groove (25) that separates them, due to the fact that the groove (25) does not cut the entire transition zone (ZT) otherwise the device would be divided into two.
    [0089]
    [0090] On the other hand, the transition zone (ZT) is characterized by having an arched shape.
    [0091]
    [0092] Regarding the posterior zone (ZP), it is characterized by having a tongue (221), because this tongue protrudes from the handle, without being hidden in the longitudinal groove (10).
    [0093]
    [0094] The tongue (221) is characterized by protruding from the plane of the anterior zone (ZA), this by means of the arching of the transition zone (ZT) together with the groove (25).
    [0095]
    [0096] The word protrude was not intended to be used in the sense of separation, since, as indicated, the double locking device (2) consists of a single piece.
    [0097] On the other hand, the anterior zone (ZA) has a hole (211) and the tongue (221) has a protrusion (222).
    [0098]
    [0099] Now, when the knife is in the closed position, this protrusion (222) rests against the cam (48) that exists between the rear part (45) of the blade and the tail (46) of the blade.
    [0100]
    [0101] Thus, in order to open the blade, it is necessary to overcome this protuberance, thus, blocking the opening of the blade depends on the articulation of the different parts that make up the knife.
    [0102]
    [0103] DESCRIPTION OF THE FIGURES
    [0104]
    [0105] In the attached figures, shared by way of example, you can see the invented knife.
    [0106] More specifically, each figure basically shows the following:
    [0107]
    [0108] in figure 1, a perspective representation of a knife according to the invention, with the knife shown in the open position with the edge of the blade pointing upwards, allowing the blade (4), the ring nut (3), the handle to be seen (1), the longitudinal feature (10) and its notch (15), and even the tongue (221) and the protrusion (222) thereof;
    [0109]
    [0110] in figure 2, an exploded perspective representation of the knife of the previous figure showing the blade (4) - its tail (46), its hole (47) and its notch (48) - the double locking device ( 2), the ring nut (3), the ring nut slot (35) and the ring nut hole (36), the handle (1), its head (16) and the head hole (165 and the pin ( 5);
    [0111]
    [0112] in figure 3, a perspective representation of the knife of figure 1, but with the folded blade, in closed position, showing the rear part (45) of the blade, the tongue (221), with the protrusion (22) of the same preventing the involuntary opening of the blade, the ferrule (3), the rod (5) and the upper part of the head (166) of the handle;
    [0113]
    [0114] in figure 4, a top view of the double locking device (2) - for the purpose of this view and the view of the following figure, the knife must be considered to be with the edge pointing upwards, as in figure 1, but encircled in the retrograde direction until the longitudinal axis of the knife forms an angle of 90 °, with a horizontal line from the horizontal plane on which it sits - showing the tongue (221), its protrusion (222) and the upper part of the anterior zone (212);
    [0115]
    [0116] in figure 5, a bottom view of the double locking device (2) showing a protuberance (222) and clearly showing the curvature of this device (2) resulting from the conjugation of the groove and the arcing of the area of ZT transition; the tongue is misaligned in relation to the previous area, achieving a spring effect;
    [0117]
    [0118] in figure 6, a view of the left side of the double locking device - being that now the knife is in the position of figure 4, but with the edge pointing downwards - showing the previous zone ZA - and in this, the hole locking device fixing (211) and point top of the upper part of the anterior zone (213) - the posterior zone ZP - and in this, the tongue (221) and the posterior inferior point of the posterior zone (223) - and the transition zone ZT;
    [0119]
    [0120] in figure 7, a view of the right side of the double locking device - with the knife in the position of the previous figure - showing the slot (25), the upper point of the upper part of the anterior area (213), the bulge (222) and posterior inferior point of posterior zone (223);
    [0121]
    [0122] in figure 8, a view of the right side of the double locking device (2) showing the midline of the slot (255).
    [0123]
    [0124] To fold the blade of the knife of figure 1, it is necessary to press the tab (221) with the thumb, unblocking the space for said fold of the blade.
    [0125]
    [0126] It should be noted that when the sheet is folded, the double locking device (2) is under tension as a result of its functional shape.
    [0127]
    [0128] This tension is particularly installed on the tongue (221).
    [0129]
    [0130] Thus, when the sheet is fully opened, the paddle is automatically misaligned from the anterior zone ZA and is positioned in alignment with the tail (46) of the sheet, clicking and locking its involuntary fold.
    [0131]
    [0132] PARTICULAR MODE OF REALIZATION
    [0133]
    [0134] In the razor of the invention, the outer contour line of the double locking device, which connects the upper point of the upper part of the anterior zone (213) to the lower posterior point of the posterior zone (223), can be a segment of a line that in the transition zone (ZT) agrees with an arc of circumference.
    [0135] In this case, the handle will preferably have a notch (15) that, in the opposite part to the upper part of the head (166), will have a circumferential arc contour.
    [0136]
    [0137] The slot (25) can be executed in such a way that its midline (255) is a broken line, constituted by the sequence of three line segments that form two obtuse angles.
    [0138]
    [0139] Considering the first angle as the angle closest to the upper part of the anterior zone (212), said two angles can present, respectively, the measurements of 110 ° and 140 ° with a tolerance of plus or minus 10 °.
    [0140]
    [0141] Preferably, the head (16) of the handle will have a ferrule (3) with a feature of the ferrule (35) and a hole in the ferrule (36).
    权利要求:
    Claims (6)
    [1]
    1. Knife consisting of a handle (1) with a longitudinal groove (10) and with a head hole (165) and a blade (4) with a hole (47) connected by means of a pin (5), characterized in that it has a double leaf locking device (2), because this double locking device (2) consists of a single piece that integrates the anterior zone (ZA), the posterior zone (ZP) and the transition zone (ZT ), because between the anterior zone (ZA) and the posterior zone (ZP) there is a groove (25) that separates them, because the groove (25) does not cut the entire transition zone (ZT), allowing this transition zone (ZT) make the connection between the anterior (ZA) and posterior (ZP) zones, because the transition zone (ZT) is arched, because the posterior zone (ZP) has a tongue (221), because this tongue protrudes from the handle, because the tongue (221) protrudes from the plane of the anterior zone (ZA), because the anterior zone (ZA) has a hole (211), because the tongue (221) has a protuberance (222), because at the junction between the back (45) of the blade and the tail (46) the blade has a notch (48) and because, in the closed knife position , the protrusion (222) rests against the notch (48).
    [2]
    2. Knife consisting of a handle (1) with a longitudinal slot (10) and with a hole in the head (165) and a blade (4) with a hole (47) connected by means of a pin (5), according to point # 1, characterized in that the outer contour line of the double locking device connecting the upper point of the upper part of the anterior zone (213) to the lower posterior point of the posterior zone (223) is a segment of straight line that, in the transition zone (ZT), agrees with an arc of circumference.
    [3]
    3. Knife consisting of a handle (1) with a longitudinal groove (10) and with a hole in the head (165) and a blade (4) with a hole (47) connected by means of a pin (5), according to point No. 2, characterized in that the handle has a notch (15) to house the double locking device (2) and because that notch on the part opposite the top of the head (166) has a contour of circumference arc.
    [4]
    4. Knife consisting of a handle (1) with a longitudinal slot (10) and a hole in the head (165) and a blade (4) with a hole (47) connected by means of a pin (5), point # 1, characterized in that the midline of the slot (255) is a broken line consisting of the sequence of three line segments that form two obtuse angles.
    [5]
    5. Knife consisting of a handle (1) with a longitudinal groove (10) and with a hole in the head (165) and a blade (4) with a hole (47) connected by means of a pin (5), according to point # 4, characterized in that the angles of the midline of the groove, considering the first angle as the closest to the top of the anterior zone (212), present, respectively, the measurements of 110 ° and 140 ° with a tolerance of plus or minus 10 °.
    [6]
    6. Knife consisting of a handle (1) with a longitudinal groove (10) and with a hole in the head (165) and a blade (4) with a hole (47) connected by means of a rod (5), according to claim n. ° 1, characterized in that the head (16) of the handle has a ferrule (3) and that the ferrule (3) has a groove in the ferrule (35) and a hole in the ferrule (36).
    类似技术:
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    同族专利:
    公开号 | 公开日
    PT110858A|2019-01-25|
    ES2752883R1|2020-06-12|
    PT110858B|2021-04-05|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    GB1090102A|1965-01-05|1967-11-08|Guenther Scheel|Improvements in pocket knives|
    FR2814390A3|2000-09-28|2002-03-29|Patrice Denis Yvon Barthes|Pocket knife has notched locking ring to prevent blade opening accidentally|
    US20100212163A1|2009-02-23|2010-08-26|Ray International Enterprises Co., Ltd.|Leaf Spring Assisted Opener|
    ES1070186Y|2009-04-01|2009-10-21|Jose Afonso Martins|POCKET KNIFE WITH PERFECTED BLADE LOCK DEVICE|
    US9061426B2|2012-06-06|2015-06-23|Milwaukee Electric Tool Corporation|Knife|
    CN106799748B|2015-11-26|2019-04-23|杭州巨星科技股份有限公司|Assist folding knife|
    法律状态:
    2020-04-06| BA2A| Patent application published|Ref document number: 2752883 Country of ref document: ES Kind code of ref document: A2 Effective date: 20200406 |
    2020-06-12| EC2A| Search report published|Ref document number: 2752883 Country of ref document: ES Kind code of ref document: R1 Effective date: 20200605 |
    优先权:
    申请号 | 申请日 | 专利标题
    PT110858A|PT110858B|2018-07-18|2018-07-18|POCKETKNIVES WITH DOUBLE BLADE BLOCKING DEVICE|
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