Blade linkage type button block lock of folding cutter

Abstract

The utility model relates to the technical field of folding cutters, and discloses a blade linkage type button block lock of a folding cutter, which comprises a linkage type button lock mechanism used for connecting a blade and a cutter handle; the linkage type button lock mechanism comprises a linkage connecting rod used for being connected with the blade and a button lock assembly installed on the knife handle, and one end of the linkage connecting rod is connected with the surface of the button lock assembly. According to the blade linkage type button block lock of the folding cutter, a linkage type button lock mechanism is arranged, a button is connected through a connecting rod, a finger presses the button and pushes the button back and forth to drive a locking column to slide on the inner wall of a locking limiting piece, the locking column drives a linkage connecting rod to move, and the linkage connecting rod drives a blade to move through a connecting shaft; the blade can be conveniently controlled to be unfolded and folded by a single hand, and high operation convenience is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of folding knives, in particular to a blade linkage button block lock of a folding knife. Background Art

[0002] A folding knife is a type of knife that can be folded. A folding knife mainly has a knife body that can be screwed into the handle and is pivotally connected to the front end of the handle by a pivot assembly.

[0003] A folding knife is a portable knife that can fold the blade into the handle. Currently common folding knives can eject the blade through a spring, but retracting the blade requires two hands to put the blade into the handle. Folding knives usually have a locking function when the blade is closed and when the blade is extended. However, the locking mechanism should be in a semi-locked state when the blade is closed, so that the blade can be quickly extended without affecting the stability of the blade closure. The locking mechanism should be in a fully locked state when the blade is extended, thereby preventing the blade from folding back and injuring the user's limbs when using the knife. At the same time, the locking mechanism should have a design that is easy to release the lock with one hand in the fully locked state, so that the blade can be closed after the knife is used.

[0004] Currently, the locking mechanisms of many folding knives on the market cannot simultaneously satisfy the semi-locked state when closed and the fully locked state when the blade is unfolded. Therefore, a folding knife locking mechanism that is easy to operate and safe and reliable is needed. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a blade linkage button block lock for a folding knife, which solves the problems mentioned in the above background.

[0006] The utility model provides the following technical solution: a blade linkage button block lock for a folding knife, comprising: a linkage button lock mechanism for connecting a blade and a handle;

[0007] The linkage button lock mechanism comprises a linkage connecting rod connected to the blade and a button lock assembly mounted on the handle, wherein one end of the linkage connecting rod is connected to the surface of the button lock assembly;

[0008] The button lock assembly includes a button block, a locking column, a locking spring, a locking limit piece and a locking guide piece, the locking limit piece and the locking guide piece are installed on both sides of the inside of the knife handle, and the locking limit piece and the locking guide piece are arranged opposite to each other, one end of the linkage connecting rod is connected to the surface of the locking column, one end of the locking column extends to the outside of the knife handle and is connected to the inner wall of the button block, the locking spring is installed on the inner wall of the locking column, and a full locking groove and a half locking groove are respectively provided at both ends of the inner wall of the locking limit piece, one end of the locking column and the locking spring are both slidably connected to the inner wall of the locking guide piece, and the surface of the locking column is connected to the inner wall of the locking limit piece.

[0009] Preferably, the knife handle comprises a main shaft, a tail ring and two handle plates, the blade and the two handle plates are mounted on the surface of the main shaft, and the two handle plates are respectively located on both sides of the blade, the tail ring is mounted between the two handle plates, the opposite surfaces of the two handle plates are provided with mounting grooves, and the locking limiter and the locking guide are respectively mounted on the inner walls of the two mounting grooves;

[0010] A connecting shaft is installed on the blade, and the linkage connecting rod is connected with the blade through the connecting shaft.

[0011] Preferably, the spindle comprises a mounting shaft seat and a mounting shaft pin, the two handle plates and the blade are both sleeved on the surface of the mounting shaft seat, and one end of the mounting shaft pin is threadedly connected to the inner wall of the mounting shaft seat;

[0012] Two gaskets are sleeved on the surface of the mounting shaft seat. The two gaskets are respectively located on both sides of the blade, and the surfaces of the gaskets are connected to the surface of the handle plate.

[0013] Preferably, a mounting hole is provided on the surface of the blade, and a knife-stopping column is installed on the inner wall of the mounting hole. First arc-shaped guide grooves are provided on the surfaces of the two handle plates at positions corresponding to the knife-stopping columns, and the ends of the knife-stopping columns are slidably connected to the inner wall of the first arc-shaped guide groove.

[0014] Preferably, guide parts are provided on both sides of the linkage connecting rod, and second arc-shaped guide grooves are opened at positions on the surfaces of the two handle plates corresponding to the guide parts, and the guide parts are slidably connected to the inner walls of the second arc-shaped guide grooves.

[0015] Preferably, a back clip is provided on one side of one of the handle plates, a fixing hole is opened at one end of the back clip, and a fixing screw is installed on the inner wall of the fixing hole, a mounting seat is provided on the surface of the locking guide, and the fixing screw is installed on the inner wall of the mounting seat.

[0016] Preferably, a ball seat is installed at one end of the back clamp away from the mounting seat, and a universal ball is connected to the inner wall of the ball seat.

[0017] Preferably, the tail ring is provided with positioning columns and a plurality of connecting tubes, the surfaces of the two handle plates are respectively provided with positioning grooves for docking with the positioning columns and limiting holes for connecting the connecting tubes, and both ends of the connecting tubes are installed with mounting screws.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] 1. The blade linkage button block lock of the folding knife is provided with a linkage button lock mechanism. The button is connected by a connecting rod. The finger presses the button and pushes the button back and forth to drive the locking column to slide on the inner wall of the locking limiter. The locking column drives the linkage connecting rod to move. The linkage connecting rod drives the blade to move through the connecting shaft, which is convenient for one-handed control of the expansion and closing of the blade and has high operational convenience.

[0020] 2. The blade-linked button block lock of the folding knife is provided with a full locking groove and a half locking groove for the expansion and closure of the blade at both ends of the inner wall of the locking limiter. The locking column is pushed into the locking pit by the locking spring, and the sliding of the button in the button lock groove is restricted to achieve the locking of the expansion and closure of the blade, which has good safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the expanded structure of the blade of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the linkage button lock mechanism when the blade of the utility model is unfolded;

[0023] Figure 3 This is a schematic diagram of the blade folding structure of the utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the linkage button lock mechanism when the blade is folded in the utility model;

[0025] Figure 5 This is a schematic diagram of the explosion structure of the utility model;

[0026] Figure 6 This is a schematic diagram of the exploded structure of the button lock assembly of the utility model;

[0027] Figure 7 It is a structural schematic diagram of the back clamp position of the utility model.

[0028] In the figure: 1. blade; 2. knife handle; 201. spindle; 2011. mounting shaft seat; 2012. mounting shaft pin; 2013. gasket; 202. tail ring; 203. handle plate; 3. linkage button lock mechanism; 31. linkage connecting rod; 32. button lock assembly; 321. button block; 322. locking column; 323. locking spring; 324. locking limiter; 325. locking guide; 326. full locking groove; 327. half locking groove; 4. mounting through groove; 5. connecting shaft; 6. knife stop column; 7. first arc guide groove; 8. guide part; 9. second arc guide groove; 10. back clamp; 11. fixing screw; 12. mounting seat; 13. ball seat; 14. universal ball; 15. positioning column; 16. connecting pipe; 17. positioning groove; 18. limiting hole; 19. mounting screw. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figure 1-7 , a blade linkage button block lock for a folding knife, comprising: a linkage button lock mechanism 3 for connecting a blade 1 and a handle 2;

[0031] See also Figure 1-4 The linkage button lock mechanism 3 includes a linkage rod 31 connected to the blade 1 and a button lock assembly 32 installed on the handle 2, and one end of the linkage rod 31 is connected to the surface of the button lock assembly 32;

[0032] See also Figure 5-6 The button lock assembly 32 includes a button block 321, a locking column 322, a locking spring 323, a locking limit piece 324 and a locking guide piece 325. The locking limit piece 324 and the locking guide piece 325 are installed on both sides of the inside of the knife handle 2, and the locking limit piece 324 is arranged opposite to the locking guide piece 325. One end of the linkage connecting rod 31 is connected to the surface of the locking column 322, one end of the locking column 322 extends to the outside of the knife handle 2 and is connected to the inner wall of the button block 321, the locking spring 323 is installed on the inner wall of the locking column 322, and the two ends of the inner wall of the locking limit piece 324 are respectively provided with a full locking groove 326 and a half locking groove 327, one end of the locking column 322 and the locking spring 323 are both slidably connected to the inner wall of the locking guide piece 325, and the surface of the locking column 322 is connected to the inner wall of the locking limit piece 324.

[0033] See also Figure 5 The handle 2 includes a main shaft 201, a tail ring 202 and two handle plates 203. The blade 1 and the two handle plates 203 are all installed on the surface of the main shaft 201, and the two handle plates 203 are respectively located on both sides of the blade 1. The tail ring 202 is installed between the two handle plates 203. The opposite surfaces of the two handle plates 203 are provided with mounting grooves 4. The locking limit member 324 and the locking guide member 325 are respectively installed on the inner walls of the two mounting grooves 4. A connecting shaft 5 is installed on the blade 1, and the linkage connecting rod 31 is connected to the blade 1 through the connecting shaft 5.

[0034] The main shaft 201 includes an installation shaft seat 2011 and an installation shaft pin 2012. The two handle plates 203 and the blade 1 are both sleeved on the surface of the installation shaft seat 2011. One end of the installation shaft pin 2012 is threadedly connected to the inner wall of the installation shaft seat 2011; two gaskets 2013 are sleeved on the surface of the installation shaft seat 2011, and the two gaskets 2013 are respectively located on both sides of the blade 1, and the surface of the gasket 2013 is connected to the surface of the handle plate 203.

[0035] A mounting hole is provided on the surface of the blade 1, and a knife stop column 6 is installed on the inner wall of the mounting hole. A first arc-shaped guide groove 7 is provided on the surfaces of the two handle plates 203 at positions corresponding to the knife stop column 6. The end of the knife stop column 6 is slidably connected to the inner wall of the first arc-shaped guide groove 7. Guide parts 8 are provided on both sides of the linkage connecting rod 31. A second arc-shaped guide groove 9 is provided on the surfaces of the two handle plates 203 at positions corresponding to the guide part 8. The guide part 8 is slidably connected to the inner wall of the second arc-shaped guide groove 9. When the blade 1 rotates, the knife stop column 6 slides on the inner wall of the first arc-shaped guide groove 7 to guide the blade 1. At the same time, the guide part 8 of the linkage connecting rod 31 slides on the inner wall of the second arc-shaped guide groove 9 to guide the end of the linkage connecting rod 31, so that the movement process of the blade 1 opening or closing is stable.

[0036] See also Figure 7 A back clip 10 is provided on one side of one of the handle plates 203, a fixing hole is opened at one end of the back clip 10, and a fixing screw 11 is installed on the inner wall of the fixing hole, a mounting seat 12 is provided on the surface of the locking guide 325, and the fixing screw 11 is installed on the inner wall of the mounting seat 12, and a ball seat 13 is installed at the end of the back clip 10 away from the mounting seat 12, and a universal ball 14 is connected to the inner wall of the ball seat 13. Through the cooperation of the back clip 10 and one of the handle plates 203, the tool can be clamped on the clothing backpack for convenient placement.

[0037] See also Figure 5 A positioning column 15 and a plurality of connecting tubes 16 are provided on the tail ring 202. Positioning grooves 17 for docking with the positioning column 15 and limiting holes 18 for connecting the connecting tubes 16 are respectively opened on the surfaces of the two handle plates 203. Both ends of the connecting tubes 16 are installed with mounting screws 19. When assembling the two handle plates 203, the positioning column 15 and the plurality of connecting tubes 16 of the tail ring 202 are first docked into the positioning groove 17 and the limiting holes 18 of one of the handle plates 203, and then docked with the other handle plate 203, and then one end of the mounting screw 19 is threadedly connected to the inner wall of the connecting tube 16, thereby fixing the position of the handle plate 203.

[0038] When the blade 1 is folded inside the handle 2, the limiting portion of the locking column 322 of the button is clamped on the inner wall of the semi-locking groove 327 of the locking limiting piece 324. When the blade 1 needs to be unfolded, the button is pressed by the finger, and the button is pressed down to push the limiting portion of the locking column 322 out of the semi-locking groove 327. While the locking column 322 moves, the locking spring 323 is compressed, and the button is pushed toward the tail of the handle 2 to drive the locking column 322 to slide on the inner wall of the locking limiting piece 324. The locking column 322 drives the linkage connecting rod 31 to move, and the linkage connecting rod 31 is driven by the linkage connecting rod 31 to move. The connecting shaft 5 drives the blade 1 to move, and the blade 1 rotates around the main shaft 201 to unfold the blade 1. When the blade 1 is in the fully unfolded state, the button is released, the locking spring 323 extends, and the locking column 322 is pushed into the full locking groove 326, which is convenient for controlling the unfolding and closing of the blade 1. The unfolding and folding closure of the blade 1 are both locked by the position of the limiting locking column 322 to lock the position of the linkage connecting rod 31, thereby locking the state of the blade 1, achieving the effect of preventing the blade 1 from folding back and injuring the user's limbs when using the knife, thereby improving the safety of the use process.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A blade linkage button block lock for a folding knife, characterized in that: include: A linkage button lock mechanism (3) for connecting the blade (1) and the handle (2); The linkage button lock mechanism (3) comprises a linkage connecting rod (31) connected to the blade (1) and a button lock assembly (32) mounted on the handle (2), wherein one end of the linkage connecting rod (31) is connected to the surface of the button lock assembly (32); The button lock assembly (32) comprises a button block (321), a locking column (322), a locking spring (323), a locking limiter (324) and a locking guide (325), wherein the locking limiter (324) and the locking guide (325) are mounted on both sides of the interior of the knife handle (2), and the locking limiter (324) and the locking guide (325) are arranged opposite to each other, one end of the linkage connecting rod (31) is connected to the surface of the locking column (322), and one end of the locking column (322) extends To the outside of the knife handle (2) and connected to the inner wall of the button block (321), the locking spring (323) is installed on the inner wall of the locking column (322), and the two ends of the inner wall of the locking limiter (324) are respectively provided with a full locking groove (326) and a half locking groove (327), one end of the locking column (322) and the locking spring (323) are both slidably connected to the inner wall of the locking guide (325), and the surface of the locking column (322) is connected to the inner wall of the locking limiter (324).

2. A blade linkage button block lock for a folding knife according to claim 1, characterized in that: The knife handle (2) comprises a main shaft (201), a tail ring (202) and two handle plates (203); the blade (1) and the two handle plates (203) are mounted on the surface of the main shaft (201), and the two handle plates (203) are respectively located on both sides of the blade (1); the tail ring (202) is mounted between the two handle plates (203); opposite surfaces of the two handle plates (203) are provided with mounting grooves (4); the locking limiter (324) and the locking guide member (325) are respectively mounted on the inner walls of the two mounting grooves (4); A connecting shaft (5) is mounted on the blade (1), and the linkage connecting rod (31) is connected to the blade (1) via the connecting shaft (5).

3. The blade linkage button block lock of a folding knife according to claim 2, characterized in that: The main shaft (201) comprises a mounting shaft seat (2011) and a mounting shaft pin (2012); the two handle plates (203) and the blade (1) are both sleeved on the surface of the mounting shaft seat (2011); and one end of the mounting shaft pin (2012) is threadedly connected to the inner wall of the mounting shaft seat (2011); Two gaskets (2013) are sleeved on the surface of the mounting shaft seat (2011), the two gaskets (2013) are respectively located on both sides of the blade (1), and the surfaces of the gaskets (2013) are connected to the surface of the handle plate (203).

4. The blade linkage button block lock of a folding knife according to claim 2, characterized in that: A mounting hole is provided on the surface of the blade (1), and a knife-stopping column (6) is installed on the inner wall of the mounting hole. A first arc-shaped guide groove (7) is provided on the surface of the two handle plates (203) at positions corresponding to the knife-stopping column (6), and an end of the knife-stopping column (6) is slidably connected to the inner wall of the first arc-shaped guide groove (7).

5. The blade linkage button block lock of a folding knife according to claim 2, characterized in that: Guide portions (8) are provided on both sides of the linkage connecting rod (31), and second arc-shaped guide grooves (9) are provided on the surfaces of the two handle plates (203) at positions corresponding to the guide portions (8), and the guide portions (8) are slidably connected to the inner walls of the second arc-shaped guide grooves (9).

6. The blade linkage button block lock of a folding knife according to claim 2, characterized in that: A back clip (10) is provided on one side of one of the handle plates (203), a fixing hole is provided at one end of the back clip (10), and a fixing screw (11) is installed on the inner wall of the fixing hole; a mounting seat (12) is provided on the surface of the locking guide member (325), and the fixing screw (11) is installed on the inner wall of the mounting seat (12).

7. A blade linkage button block lock for a folding knife according to claim 6, characterized in that: A ball seat (13) is mounted on one end of the back clamp (10) away from the mounting seat (12), and a universal ball (14) is connected to the inner wall of the ball seat (13).

8. The blade linkage button block lock of a folding knife according to claim 2, characterized in that: The tail ring (202) is provided with a positioning column (15) and a plurality of connecting tubes (16); surfaces of the two handle plates (203) are respectively provided with positioning grooves (17) for docking with the positioning column (15) and limiting holes (18) for connecting the connecting tubes (16); both ends of the connecting tubes (16) are provided with mounting screws (19).

Images