CN116209551A - Folding knife locking mechanism and folding knife with same - Google Patents
Folding knife locking mechanism and folding knife with same Download PDFInfo
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- CN116209551A CN116209551A CN202180064484.4A CN202180064484A CN116209551A CN 116209551 A CN116209551 A CN 116209551A CN 202180064484 A CN202180064484 A CN 202180064484A CN 116209551 A CN116209551 A CN 116209551A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B1/00—Hand knives with adjustable blade; Pocket knives
- B26B1/02—Hand knives with adjustable blade; Pocket knives with pivoted blade
- B26B1/04—Hand knives with adjustable blade; Pocket knives with pivoted blade lockable in adjusted position
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Abstract
The invention relates to a folding knife locking mechanism comprising a locking portion of the heel (1) of the blade (2) having a radial section (3) (projection AB) and a thrust section (4) (projection BC), the projections of which form an angle beta, the vertex of which is directed towards the blade (2). The adjacent angle alpha is an acute angle. The heel (1) is in contact with an end face of a locking plate (6), the locking plate (6) being spring-loaded on a section (5) having horizontal translation capability. The radial portion (3) and the thrust portion (4) of the heel (1) are inclined at an angle of 6 DEG to 10 deg. The folding knife comprises a blade pivoted on a pivot (9) and provided with handles, between which a central plate (15) is placed. The central plate (15) has locking plates (17 and 6), the locking plates (17 and 6) being positioned symmetrically to each other and spring-loaded in opposite directions, which locks the blades when they are opened in different directions. The locking mechanism of both blades is identical. The technical result is to improve the reliability of the folding knife locking mechanism by redistributing the forces in the contact area between the locking portion of the heel of the blade and the locking plate (pad).
Description
Technical Field
The present invention relates to a design of folding knives having a locking mechanism, in particular a "frame lock", of the "liner lock" type and variants thereof, and which can be used for their manufacture.
Background
Various designs of folding knife locking mechanisms are known in the science and technology.
There is a known blade locking mechanism for folding knives in which the locking surface engaged by the contact end of the locking pin is a concave part cylinder with its central axis of curvature in a position offset relative to the blade in the direction of the side of the handle from which the locking pin extends. The concave portion of the locking surface has a radius of curvature that is less than the radius of curvature of the path of the locking pin contact end (US 5755035).
There are known folding blade release mechanisms having a spring loaded locking lever for the closure knife. When the knife is open, the locking bar holds the blade in the recess (US 6256887).
There is a known folding knife locking mechanism comprising a rear portion of the blade, a safety lock with a flat pressure spring which can interact with a supporting shoulder at the rear portion of the blade when the knife is opened (US 6834432).
A common feature of the "liner lock" type folding knife locking mechanism and variants thereof, in particular the "frame lock", is the blade with heel, the locking surface of which interacts with the end face of the locking plate (liner) which is spring loaded and located in the handle or part thereof during radial movement during folding, and the folding blade also interacts with the locking pin during radial movement in the opposite direction, which limits its movement.
The closest solution to the folding knife locking mechanism is a folding knife locking mechanism comprising a heel of a blade with a support portion in the form of a flat radial section, which interacts with the end face of a handle locking plate on the side of which a locking pin (https:// web. Archive/web/2019 x/https:// winuto. Ua/arms/knives-springs-for-selection-and-operation/vidy-zamkov-skladnyh-nozhej /).
The most common disadvantage of all previously described folding knife locking mechanisms is that under high loads on the blade, the locking plate that interacts with it is pushed out towards the handle bar. In this case, the locking plate is bent before being pushed out, and is thus deformed in the region of its elastic or spring-loaded portion. Such deformation can cause displacement of the locking plate, which seizes and damages the knife, which is particularly evident in knives with thin locking plates (gaskets).
There are also a wide variety of known folding knives equipped with two blades and various locking mechanisms.
In particular, there is a known folding knife having two independently opening blades and using the same locking mechanism to secure the blades in the extended (open) position. The knife also has a retaining mechanism (US 20140245616) that secures one or both blades in the folded (closed) position.
Patent research also reveals the following technical solutions in the art: CN107866825, CN1285263, FR0724506.
There are known folding knives, which pivot on a D-axis, which also secures the lateral portions and locks the blade. The thumb pin for opening the blade is also D-shaped and fits securely over the blade. The blade has a transverse groove at the base to make it easier to pull the blade out of the sheath. The blade is locked by a lateral locking plate, which is secured by lateral lugs. The side portions are preferably made of a rigid plastic, but have a soft inlay along the side portions for better grip (US 5546662).
The closest solution chosen as prototype is a folding knife consisting of a handle with a bar having a central plate with two locking plates spring-loaded in opposite directions and positioned symmetrically to each other; folding blades of different directions, which are pivoted in the handles, can be unfolded from a folded (closed) position, single-handle, and are located between the bar and the central plate, wherein each blade comprises a heel with a locking portion having a radial section interacting with the end face of the corresponding locking plate (US 5537750).
The most common disadvantage of folding knives having a "liner lock" locking mechanism (including prototypes) is that under high loads on the blade, the interacting locking plate is pushed out in a direction opposite to the direction of movement of the locking plate when the blade is in the open (working) position. In this case, the locking plate is bent before being pushed out and deformed in the elastic or spring-loaded portion. Such deformation can lead to displacement of the locking plate, its jamming and destruction of the knife, which is particularly evident in knives with thin locking plates (gaskets).
Disclosure of Invention
The technical problem underlying the present invention is to improve the reliability of a folding knife locking mechanism, including its use in the design of a folding knife with two blades, which has the possibility of alternating opening with one hand.
The technical result of the invention is an increased reliability of the locking mechanism due to the redistribution of forces in the contact area between the locking portion of the heel of the blade and the locking plate (pad) of the folding blade, including its use in the design of a folding blade with two blades, which has the possibility of alternating opening with one hand.
As a further technical result, the claimed design allows for a reduction in the weight of the folding knife as it allows for the removal of the rear spacer and a reduction in the thickness of the blade locking zone.
The technical problem underlying the present invention is that the folding blade locking mechanism comprises a heel of a blade having a locking portion with a radial section interacting with an end face of a locking plate, spring-loaded and located in or as part of a handle, on the side of which locking plate a locking pin is mounted, characterized in that the locking portion of the heel of the blade has an additional thrust section, whereas the projection of the thrust section of the heel of the blade and of the front view of the radial section form an angle, the apex of the angle pointing towards the blade, and a sharp adjacent angle is formed by the projection of the front view of the radial section and a line parallel to the displacement axis of the locking plate passing through the apex of the angle, the end face of the locking plate being flat and having a shape that interacts simultaneously with the radial section and the thrust section of the heel of the blade by respective contact points, whereas the radial section and the thrust section of the heel of the blade are inclined.
The surfaces of the radial and thrust sections of the heel of the blade are inclined mainly at an angle of 6 ° -10 °, which provides a locking connection reliability at the contact point with the flat end face of the locking plate.
The surfaces of the radial and thrust sections of the heel of the blade may be flat or curved in the direction of the heel of the blade.
The locking plate is located mainly in the handle bar or as a part thereof.
The possibility of the locking plate flat end surface interacting simultaneously with the radial and thrust sections of the locking portion of the heel of the blade through the respective contact points is provided by the fact that: the projection of the locking plate end face is coincident with the projection of the radial and thrust sections of the heel of the blade.
The sharp adjacent angle of the projection of the front view of the radial segment with the line parallel to the displacement axis of the locking plate passing through the apex of the angle means that its value is in the range of 0 to 90 °.
The technical problem is also solved by the fact that: folding knife consisting of a handle with bars, with a central plate with two locking plates, which are spring-loaded in opposite directions and positioned symmetrically to each other, the blades being pivoted in the handle and being able to be unfolded from a folded (closed) position single-handle and between the respective bars and the central plate, wherein each blade comprises a heel with a locking portion having a radial section interacting with the end face of the respective locking plate, characterized in that the locking portion of the heel of each blade has an additional thrust section, while the projections of the thrust section of the heel of the blade and the front view of the radial section form an angle, the apex of which is directed towards the blade, and the apex of the locking plate forms a sharp adjacent angle through the apex of the angle by the projection of the front view of the radial section and a line parallel to the displacement axis of the locking plate, the end face of the locking plate being flat and having a shape providing simultaneous interaction with the radial section and the thrust section of the heel of the blade, while the radial section and the thrust section of the heel of the blade are inclined in the direction of the end face of the locking plate.
The radial and thrust sections of the heel of each blade are inclined at an angle of 6 ° -10 ° in the direction of the locking plate end face. The projection of the end face of each locking plate is coincident with the angle (β) formed by the projections AB and BC of the radial and thrust sections of the heel of the blade. The sharp adjacent angle (alpha) has a value from greater than 0 to less than 90 deg.. The folding blades are mainly equipped with fins.
The claimed invention group relates to a single inventive concept based on the design of a folding knife locking mechanism, which differs from the known designs in the following features:
the locking portion of the heel of the blade has an additional thrust section;
-the projections of the front views of the thrust section and the radial section form an angle;
-the vertex of the angle is directed towards the blade;
the projection of the front view of the radial section forms a sharp adjacent angle with a line parallel to the displacement axis of the locking plate through the top of the angle;
the end face of each locking plate is flat and has a shape providing simultaneous interaction with the radial and thrust sections of the heel of the respective blade through the respective contact point;
the thrust section and the radial section of the heel of the blade are inclined in the direction of the locking plate end face.
The claimed folding knife with the above-described locking mechanism thus differs from the known designs in the following features:
each locking portion of the heel of the blade has an additional thrust section;
the thrust of the heel of each blade and the projection of the front view of the radial sector form an angle, the vertex of which is directed towards the blade;
-the projection of the radial section forms a sharp adjacent angle with a line parallel to the locking plate displacement axis passing through the apex of the angle;
the end face of each locking plate is flat and has a shape providing simultaneous interaction with the radial and thrust sections of the heel of the respective blade through the respective contact point;
the radial and thrust sections of the heel of each blade are inclined in the direction of the locking plate end face.
The claimed folding knife locking mechanism and folding knives having the same may be manufactured using known machining methods and techniques.
Best Mode for Carrying Out The Invention
Variations of the present invention regarding a folding blade locking mechanism and a folding blade having the same will be described below by way of example with reference to the accompanying drawings.
Figures 1-5 illustrate a solution for folding a single blade knife of the claimed locking mechanism.
FIG. 1 shows a front view (plan) of a folding single-bladed knife in an operative position with a locking mechanism as claimed, showing the location of the magnification zone I and the counter stress vector;
fig. 2 shows a partial view of the locked portion enlargement I;
FIG. 3 shows a cross-section A-A of the contact areas of the thrust section of the heel of the flat blade and the corresponding locking plate end face section;
FIG. 4 shows a cross-section N-N of the contact areas of the radial sections of the heel of the flat blade and the corresponding locking plate end face sections;
FIG. 5 illustrates the position of the claimed folding knife locking mechanism in a folded state;
fig. 6 shows a known "liner lock" type locking mechanism in an operative position and illustrates the direction of force vectors generated in the contact area of the heel of the blade and the locking plate for comparison.
The claimed folding knife locking mechanism (fig. 1) comprises a single pivoting blade (2) and a handle (10) (not fully shown). The blade (2) is designed with a heel (1), which heel (1) has a locking portion in the form of a flat radial section (3) (fig. 2, 4, 5) and a flat thrust section (4) (fig. 2, 4, 5), which flat thrust section (4) interacts with the locking plate (6) (pad) end face, is spring-loaded on a section (5) (not shown) with horizontal translational capability (perpendicular to the displacement axis O-O), and is located in the stem (8) of the handle (10). The end face of the locking plate (6) has sections (11) and (12), the sections (11) and (12) interacting with respective radial sections (3) and thrust sections (4) of the heel (1) of the locking portion of the blade (2) (fig. 3, 4). The radial section (3) and the thrust section (4) of the heel (1) are inclined at an angle of 6 ° to 10 °, which provides a locking connection reliability at the contact points with the respective sections (11, 12) of the end face of the locking plate (6). On the side surface of the locking plate (6) there is a rigid locking pin (7) made in the form of a ball, which rigid locking pin (7) is placed in a corresponding slot (14) on the heel (1) when the knife is folded. Movement of the blade (2) in a direction opposite to the folding direction is limited by a pin (13). Fig. 1 shows a projection BC of the thrust section (4) and a projection AB of the radial section (3) forming an angle β with the apex pointing towards the blade 2. The projection AB of the radial section (3) forms an acute adjacent angle alpha with the apex of a line parallel to the displacement axis O-O of the locking plate (6) passing through the angle beta. The end face of the locking plate (6) has sections (11) and (12) which interact simultaneously with the thrust section (4) and the radial section (3) of the locking portion of the heel (1) of the blade (2), the projection of the end face of the locking plate (6) coinciding with the angle formed by the projections AB and BC of the radial section (3) and the thrust section (4) of the heel (1).
The following conditions were provided during prototype fabrication:
the material of the locking plate is 40 x 13 grade corrosion resistant steel;
-angle α -40 °;
-angle β -90 °;
the claimed single blade folding knife locking mechanism works as follows.
When folded, the blade (2) is located in the handle (10) (not fully shown), while the locking pin (7) prevents the blade (2) from falling out of the handle (10), so the folding knife cannot be inadvertently opened (fig. 5).
In order to open the folding blade, it is necessary to rotate the blade (2), the blade (2) being pivoted on the pivot (9) up to an end stop of the pin (13), wherein a recess (not shown) is located in the stem (8) of the handle (10), so that the radial section (3) and the thrust section (4) of the heel (1) are in contact with the respective sections (11, 12) of the end face of the locking plate (6).
In order to close the folding knife, the spring-loaded locking plate (6) needs to be pressed out, so that its end faces disengage from the radial section (3) and the thrust section (4) of the heel (1) and return the blade (2) to its initial position in the handle (10).
Experimental data indicate that folding blades with locking zone widths up to 1.5-2mm can be manufactured with the claimed locking mechanism design taking into account wear of the mating surfaces of the heel of the blade and the locking plate, which in turn reduces the size of the folding blade and its metal consumption.
Analysis of the known "liner lock" type locking mechanism (fig. 6) shows that in the open position, when a load M is applied on the blade at point a of the radial section AB, forces Px and Py are generated, so that the resultant force P pushes the locking plate out of contact with the radial section AB towards the handle bar, since the radial section is beveled and at the same time applies a pressure along the locking plate, which causes it to lose stability in the end face region and causes it to deform against large M values in the spring-loaded region. Such deformation may render the knife completely unusable.
In the claimed locking mechanism (fig. 1), the locking portion of the heel (1) of the blade (2) is made in the form of two sections-a radial section (3) whose projection is marked AB in the front view (fig. 1) and a thrust section (4) whose projection is marked BC in the front view (fig. 1), which increases the contact area of the heel (1) with the end face of the locking plate (6). Furthermore, the projections AB and BC of the segments form an angle, the apex of which is directed towards the blade (2), and since this redistribution of a portion of the force P to the thrust segment (4) is achieved by BC projection, it becomes more difficult to push the locking plate (6) out towards the stem (8) of the handle (10) in view of this factor and the increase in contact area. It should also be noted that the force P is directed to lift the locking plate (6) and that this load is absorbed by the thrust section (4) with BC projection, so that the locking plate (6) is significantly unloaded from the generated force, which reduces the possibility of its deformation.
Figures 7-15 show examples of the claimed folding knife with two blades and the claimed locking mechanism.
Fig. 7 shows a front view (plan) of the folding knife in the working position, with one blade open and without a lever. The view additionally shows the location of the magnified region B and the associated force vector;
FIG. 8 shows a top view of a folding knife with one blade and bar open;
FIG. 9 shows a center plate with two locking plates spring loaded in opposite directions;
fig. 10 shows a side view of two folding knife opening variants-blade 2a and blade 2b, wherein arrow M indicates the direction of the blade opening;
fig. 11 shows a partial view representing an enlarged area B;
FIG. 12 shows section E-E, which illustrates the contact area of the heel flat thrust section of the blade with the corresponding locking plate end face;
FIG. 13 shows a section F-F representing the contact area of the heel flat radial section of the blade with the corresponding locking plate end face;
fig. 14 shows a knife with a blade equipped with fins;
fig. 15 shows the claimed folding knife in a folded state.
The claimed folding knife comprises two blades (2 a) and (2 b) pivoted on a pivot (9) (fig. 7, 8) and is equipped with a handle, with a central plate (15) between the bars (16) and (8). The blades (2 a and 2 b) are equipped with fins (18, 19) (fig. 14) and pins (13, 20) (fig. 7 and 10). The central plate (15) has two locking plates (17 and 6), which are spring-loaded in opposite directions (fig. 9) and are positioned symmetrically to each other, which fix the blades (fig. 10) when the blades (2 a and 2 b) are opened in different directions. The locking mechanisms of the two blades (2 a and 2 b) are identical, and thus the following description is provided to the blade (2 a). The blade (2 a) is configured with a heel (1), the heel (1) having a locking portion in the form of a flat radial section (3) (fig. 11) and a flat thrust section (4) (fig. 11), the locking portion interacting with an end face of a locking plate (6) (pad). The locking plate (6) (pad) is spring-loaded on a section (5) (not shown) with horizontal translation capability (perpendicular to the displacement axis O-O) and is located between the blades (2 a) and (2 b). The locking plate (6) end face has sections (11 and 12) which interact with the respective radial section (3) and thrust section (4) of the heel (1) of the blade (2 a) (fig. 12 and 13). The radial section (3) and the thrust section (4) of the heel (1) are inclined at an angle of 6 ° to 10 °, which provides a locking connection reliability at the contact points with the respective sections (11, 12) of the end face of the locking plate (6). On the side surface of the locking plate (6) there is a rigid locking pin (7) made in the form of a ball, which rigid locking pin (7) is placed in a corresponding groove on the heel (1) when the knife is folded (fig. 7). Movement of the blade (2 a) in a direction opposite to the folding direction is limited by a pin (13). Fig. 7 shows a projection BC of the thrust section (4) and a projection AB of the radial section (3), which form an angle β. The apex of the angle β is directed towards either blade 2a or blade 2b. The projection AB of the radial section (3) forms an acute adjacent angle alpha with the apex of a line parallel to the displacement axis O-O of the locking plate (6) passing through the angle beta. The projection of the end face of the locking plate (6) coincides with the angle formed by the projections AB and BC of the radial section (3) and thrust section (4) of the heel (1).
The following conditions were provided during prototype fabrication:
the material of the locking plate is 40 x 13 grade corrosion resistant steel;
-angle α -33 °;
-angle β -116 °.
The claimed folding knife works as follows.
When folded, the blades (2 a,2 b) are located in the handle (fig. 15), and the locking pin (7) prevents the blades (2 a,2 b) from falling out of the handle, so that the folding knife cannot be inadvertently opened (fig. 11).
In order to open one blade (2 a) of the folding knife with one hand operation, it is sufficient to rotate the pin 13 (or press the flipper 18) of the blade (2 a). The blade (2 a) pivots on the pivot (9) up to the end stop of the pin (13), wherein the recess is located in the stem (8) of the handle, so that the radial section (3) and the thrust section (4) of the heel (1) are in contact with the respective sections (11, 12) of the end face of the locking plate (6).
In order to close the blade (2 a) of the folding knife, it is necessary to press the spring-loaded locking plate (6), so that its end face disengages from the radial section (3) and thrust section (4) of the heel (1) and returns the blade (2 a) to its initial position in the handle.
The second blade (2 b) opens and closes in the same way. Locking recesses (21) and (22) for the end stop pin (20) to the folded and unfolded positions, respectively, are shown in fig. 10.
Experimental data indicate that with the claimed folding knife design, a knife with a blade locking zone width of up to 1.5-2.0mm can be manufactured, which in turn reduces the knife size and its metal consumption, taking into account wear of the mating surfaces of the heel of the blade and the locking plate.
Analysis of the known "liner lock" type locking mechanism (fig. 6) shows that in the deployed (open) position, a resultant force is generated when the blade is loaded at the point of contact between the radial section of the heel of the blade and the locking plate. This results in the locking plate being pushed out of contact with the radial section in a direction opposite to the direction of movement of the locking plate when the blade is in the open (working) position, since the radial section is beveled. At the same time, the high load exerts a pressure along the locking plate, which causes it to lose stability in the end face region and causes it to deform in the spring-loaded region. Such deformation may render the knife completely unusable.
In the claimed folding knife (fig. 7), the locking portion of the heel (1) of the blade (2 a) is made in the form of two sections-a radial section (3), the projection of which is marked AB (fig. 7) in front view, and a thrust section (4), the projection of which is marked BC (fig. 11) in front view. The two parts of the locking mechanism of each blade (2 a,2 b) increase the contact area of their heel (1) with the end face of the locking plate (6). Furthermore, the projections AB and BC of the segments form an angle, the apex of which is directed towards the blade (2 a), and as a redistribution of part of the force P towards the thrust segment (4) is achieved by BC projection, it becomes more difficult to push the locking plate (6) in a direction opposite to the direction of movement of the locking plate when the blade is in the open (working) position, taking account of this factor and the increase of the contact area. It should also be noted that the force P is directed to lift the locking plate (6) and that this load is absorbed by the thrust section (4), so that the locking plate (6) is significantly unloaded from the generated force, which reduces the possibility of deformation thereof.
INDUSTRIAL APPLICABILITY
The claimed folding knife locking mechanism and folding knife with it can be manufactured using known machining methods and materials, so that it meets the "industrial applicability" criteria.
The claimed solution improves the reliability of the locking mechanism and the durability (service life) of a folding knife with one or two blades by distributing the load and increasing the contact area of the locking portion of the heel of the blade with the locking plate (pad) end face. Furthermore, the claimed solution makes it possible to reduce the size of the folding blade while maintaining the reliability of the locking connection.
Claims (11)
1. Folding knife locking mechanism comprising a heel (1) of a blade (2) with a locking portion having a radial section (3) interacting with the end face of a locking plate (6), spring loaded and located in or as part of a handle (10), with a locking pin (7) on the side surface of the locking plate (6), characterized in that the locking portion of the heel (1) of the blade (2) has an additional thrust section (4), whereas the projection BC of the front view of the thrust section (4) and the projection AB of the front view of the radial section (3) of the heel (1) of the blade (2) form an angle β, the apex of said angle β pointing towards the blade (2), and sharp adjacent angles α are formed by the projection AB of the radial section and the apex of a line parallel to the displacement axis O-O of the locking plate (6), the end face of the locking plate (6) being flat and having a simultaneous interaction with the radial section (3) of the heel (1) of the blade (2) and the shape of the thrust section (4) by means of the corresponding contact point.
2. Folding knife locking mechanism according to claim 1, characterized in that the radial section (3) and thrust section (4) of the heel (1) are inclined at an angle of 6 ° -10 ° in the direction of the end face of the locking plate (6).
3. Folding knife locking mechanism according to claim 1, characterized in that the projection of the locking plate end surface coincides with the angle β formed by the projections AB and BC of the radial section (3) and thrust section (4) of the heel (1) of the blade (2).
4. The folding knife locking mechanism of claim 1, wherein the acute adjacent angle α has a value of 0-90.
5. Folding knife locking mechanism according to claim 1, characterized in that the surfaces of the radial section (3) and thrust section (4) of the heel (1) of the blade (2) are flat.
6. Folding knife locking mechanism according to claim 1, characterized in that the surfaces of the radial section (3) and thrust section (4) of the heel (1) of the blade (2) are concave.
7. Folding knife comprising a handle with bars (8, 16), with a central plate (15) between the bars (8, 16), the central plate (15) having two locking plates (6, 17), the two locking plates (6, 17) being positioned symmetrically above each other and spring-loaded in opposite directions, blades (2 a,2 b) being fixed in the handle and pivotable by a user opening from a folded position with one hand, and being positioned between the respective bars (8, 16) and the central plate (15), each blade comprising its heel (1), the heel (1) having a locking portion with a radial section (3) interacting with the end face of the respective locking plate (6, 17), characterized in that the locking portion of the heel (1) of each blade has an additional thrust section (4), while the projection (BC) of the main view and the projection (AB) of the radial section (3) of the heel (1) of each blade (2 a or 2 b) form an angle (β), the apex (β) of which points to the apex (2 a or AB) of the blade (2 b) and the projection (AB) of the radial section (3) of each blade (1) forms an angle of view parallel to the angular displacement (a) of the respective locking plates (38O), 6) Is flat and has a shape providing simultaneous interaction with the radial section (3) and the thrust section (4) of the heel (1) of the respective blade through the contact point, whereas the radial section (3) and the thrust section (4) of the heel (1) of each blade are inclined towards the end face of the respective locking plate (17,6).
8. Folding knife according to claim 7, characterized in that the radial section (3) and the thrust section (4) of the heel (1) of the blade are inclined at an angle of 6 ° -10 ° in the direction of the end face of the locking plate (17,6).
9. Folding knife according to claim 7, characterized in that the projection of the locking plate end face (17,6) coincides with the angle (β) formed by the projections AB and BC of the radial section (3) and thrust section (4) of the heel (1) of the respective blade.
10. The folding knife of claim 7 wherein the acute adjacent angle α has a value of 0-90 °.
11. Folding knife according to claim 7, characterized in that the folding blade is provided with fins (18, 19).
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EA202000243A EA038403B1 (en) | 2020-07-22 | 2020-07-22 | Jack-knife locking device |
| EA202000243 | 2020-07-22 | ||
| EA202000320A EA038675B1 (en) | 2020-10-12 | 2020-10-12 | Jack knife |
| EA202000320 | 2020-10-12 | ||
| PCT/EA2021/050003 WO2022017573A1 (en) | 2020-07-22 | 2021-06-08 | Locking mechanism for a folding knife and folding knife utilizing same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116209551A true CN116209551A (en) | 2023-06-02 |
Family
ID=79729048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202180064484.4A Pending CN116209551A (en) | 2020-07-22 | 2021-06-08 | Folding knife locking mechanism and folding knife with same |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN116209551A (en) |
| WO (1) | WO2022017573A1 (en) |
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| US5621973A (en) * | 1993-10-18 | 1997-04-22 | Buck Knives, Inc. | Lockable folding knife with rollover blade selection |
| US5755035A (en) * | 1996-11-21 | 1998-05-26 | Benchmade Knife Co., Inc. | Blade lock mechanism for folding knife |
| US6553671B2 (en) * | 1999-12-08 | 2003-04-29 | Gary R. Blanchard | Folding knife with a button release locking liner |
| JP2001259255A (en) * | 2000-02-23 | 2001-09-25 | Spyderco Inc | Locking mechanism for folding knife |
| US7062856B2 (en) * | 2003-06-30 | 2006-06-20 | United Cutlery Corporation | Folding tool |
| US7774940B2 (en) * | 2008-01-03 | 2010-08-17 | Dragon Nails, Inc. | Folding knife with puzzle piece locking mechanism |
| US8966768B2 (en) * | 2011-03-07 | 2015-03-03 | Gb Ii Corporation | Ball bearing assembly for folding knife or tool |
-
2021
- 2021-06-08 WO PCT/EA2021/050003 patent/WO2022017573A1/en active Application Filing
- 2021-06-08 CN CN202180064484.4A patent/CN116209551A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022017573A1 (en) | 2022-01-27 |
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