Folding knife

Abstract

The utility model provides a folding knife which comprises a knife handle and a blade, the knife handle comprises a fixing plate, a first side plate and a second side plate, the first side plate and the second side plate are fixedly arranged on the two sides of the fixing plate respectively, a containing space is formed between the first side plate and the second side plate, and the rear end of the blade is rotationally arranged at one end of the containing space. A locking rod is rotationally arranged between the fixing plate and the blade, a clamping groove is formed in the rear end of the blade, a clamping block is fixedly arranged at one end of the locking rod, and when the blade is in an unfolded state, the clamping block is clamped in the clamping groove. A first elastic piece used for preventing the clamping block from rotating in the direction away from the clamping groove is arranged between the lock rod and the fixing plate, and a sliding rod used for pushing the clamping block to rotate in the direction away from the clamping groove is arranged on the knife handle in a sliding mode. According to the folding knife, the lock rod is arranged to be matched with the sliding rod, operation is easy, the folding knife is kept stable in the unfolding state, and meanwhile a user can easily unfold or fold the blade with one hand.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of cutters, especially a folding knife. BACKGROUND

[0002] The folding knife is a common cutter, which has the function of storing a blade, and the folding knife after storage has the characteristics of small size and light weight, so the folding knife is an indispensable personal carrying product in the field.

[0003] At present, in order to ensure the safety of the folding knife, the knife body is usually positioned and locked relative to the handle to avoid accidental folding when being unfolded. The common positioning and locking structure of the knife body relative to the handle is a shaft lock or a back lock structure, wherein the back lock structure is simple, easy to manufacture, and firm in locking. However, the back lock structure generally needs to be opened and closed with both hands, that is, one hand presses the lock rod, and the other hand opens and closes the blade, which is relatively cumbersome to operate. SUMMARY

[0004] The main purpose of the utility model is to provide a folding knife to solve the problem that the folding knife with a back lock structure in the prior art needs to be opened and closed with both hands, which is relatively cumbersome to operate.

[0005] In order to solve the above problems, the utility model adopts the following technical scheme, a folding knife, comprising a handle and a blade, the handle comprises a fixed plate and first and second side plates fixed on both sides of the fixed plate, respectively, a containing space for storing the blade is formed between the first and second side plates, the rear end of the blade is rotatably arranged at one end of the containing space away from the fixed plate, a lock rod is rotatably arranged between the fixed plate and the blade, the rear end of the blade is provided with a clamping groove, one end of the lock rod is fixedly provided with a clamping block, when the blade is in an unfolded state, the clamping block is clamped in the clamping groove, a first elastic member is arranged between the lock rod and the fixed plate for preventing the clamping block from rotating away from the clamping groove, and a sliding rod is slidably arranged on the handle for pushing the clamping block to rotate away from the clamping groove.

[0006] Further, the lock rod comprises a limiting portion, a protruding portion and an abutting portion, the clamping block is fixedly connected with the limiting portion, the protruding portion protrudes from the limiting portion and the abutting portion and extends towards the inside of the containing space, one end of the protruding portion close to the abutting portion is rotatably arranged in the containing space through a pin shaft, and in the normal state, the sliding rod is located on one side of the limiting portion.

[0007] Further, the first elastic piece is a spring sheet, the fixing plate is provided with a slot near one end of the lock rod, one end of the first elastic piece is inserted into the slot, the other end of the first elastic piece extends towards the lock rod and abuts against one side of the abutting part of the lock rod close to the accommodating space.

[0008] Further, the first side plate and the second side plate are respectively provided with a sliding groove, the sliding groove is parallel to the length direction of the handle, and the two ends of the sliding rod are respectively arranged in the two sliding grooves.

[0009] Further, the accommodating space is provided with a blocking rod, the blocking rod is located on the side, away from the lock rod, of the clamping block, and the rear end of the blade is recessed with an arc-shaped groove, when the clamping block is clamped in the clamping groove, the arc-shaped groove abuts against the blocking rod.

[0010] Further, the rear end of the blade is provided with a positioning groove on the side, away from the clamping groove, of the blade, when the blade is in the folded state, the clamping block is located in the positioning groove.

[0011] Further, the blade comprises a blade side and a blade back side, and the rear end of the blade is provided with a blade pushing hole close to the blade back side.

[0012] Further, the first side plate and the second side plate are respectively provided with a letting slot on the side, away from the lock rod, of the first side plate and the second side plate, when the blade is in the folded state, the blade pushing hole is located on one side of the letting slot.

[0013] Further, the fixing plate is provided with a through hole on the end, away from the lock rod, of the fixing plate, and the first side plate and the second side plate are respectively provided with a letting opening corresponding to the through hole.

[0014] Further, the first side plate and the second side plate both comprise a connecting plate and a cover plate, the connecting plate of the first side plate and the connecting plate of the second side plate form an accommodating space, and the cover plate of the first side plate and the cover plate of the second side plate are respectively arranged on the side, away from the accommodating space, of the corresponding connecting plate.

[0015] The utility model discloses the beneficial effect is: through setting lock rod cooperation sliding rod, simple operation makes folding knife keep stable in the unfolded state, and user can easily realize the unfolding or folding of blade with one hand, through setting blocking rod can limit the blade in the unfolded state, avoid the blade to sway, influence use effect, through setting blade pushing hole and letting slot, to facilitate user to promote the blade to switch from the folded state to the unfolded state. BRIEF DESCRIPTION OF DRAWINGS

[0016] The utility model discloses make further detailed explanation in combination with the specific embodiment and the drawing.

[0017] Figure 1 The structure schematic diagram of the folding knife in the unfolded state of the utility model;

[0018] Figure 2 The exploded structure schematic diagram of the first side plate and the second side plate of the folding knife of the utility model;

[0019] Figure 3 The internal structure schematic diagram of the folding knife of the utility model;

[0020] Figure 4 The structure schematic diagram of the folding knife in the folded state of the utility model.

[0021] Explanation of reference signs

[0022] 1, knife handle; 11, fixed plate; 111, insertion slot; 112, through hole; 12, first side plate; 121, connecting plate; 122, cover plate; 13, second side plate; 131, sliding slot; 132, accommodation slot; 133, accommodation opening; 14, accommodating space; 2, blade; 21, cutting edge side; 22, back side; 23, rear end; 24, clamping groove; 25, arc-shaped groove; 26, positioning groove; 27, blade pushing hole; 3, locking rod; 31, limiting part; 32, protruding part; 33, abutting part; 34, clamping block; 35, pin shaft; 4, first elastic member; 5, sliding rod; 6, blocking rod. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the utility model, but the utility model can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the connotation of the utility model, therefore the utility model is not limited by the specific embodiments disclosed below.

[0024] Please refer to Figures 1 to 3As shown in the figure, a folding knife comprises a knife handle 1 and a blade 2, wherein the knife handle 1 comprises a fixed plate 11, a first side plate 12 and a second side plate 13, the first side plate 12 and the second side plate 13 are respectively fixed on both sides of the fixed plate 11, and a containing space 14 for accommodating the blade 2 is formed between the first side plate 12 and the second side plate 13, the rear end 23 of the blade 2 is rotatably arranged in the containing space 14 and located at the end away from the fixed plate 11, thereby enabling the blade 2 to be folded or unfolded relative to the knife handle 1. In the embodiment, the first side plate 12 and the second side plate 13 each comprise a connecting plate 121 and a cover plate 122, the connecting plate 121 of the first side plate 12 and the connecting plate 121 of the second side plate 13 form the containing space 14, and the cover plate 122 of the first side plate 12 and the cover plate 122 of the second side plate 13 are respectively arranged on the side of the corresponding connecting plate 121 away from the containing space 14. It should be noted that the materials of the connecting plate 121 and the cover plate 122 can be selected from the metal material, the plastic material or the wooden product in the prior art, which is not limited herein.

[0025] In the embodiment, a lock rod 3 is rotatably arranged between the fixed plate 11 and the blade 2, for locking the blade 2 in the unfolded state to avoid the blade 2 from being accidentally folded to cause damage to the user. Specifically, the rear end 23 of the blade 2 is provided with a clamping groove 24, and one end of the lock rod 3 is fixedly provided with a clamping block 34, when the blade 2 is in the unfolded state, the clamping block 34 is clamped in the clamping groove 24 to prevent the blade 2 from rotating. Specifically, please refer to Figure 3 As shown in the figure, the lock rod 3 comprises a limiting portion 31, a protruding portion 32 and an abutting portion 33, the clamping block 34 is fixedly arranged at the end of the limiting portion 31 away from the protruding portion 32, the protruding portion 32 protrudes from the limiting portion 31 and the abutting portion 33 and extends towards the inside of the containing space 14, and the end of the protruding portion 32 close to the abutting portion 33 is rotatably arranged in the containing space 14 through a pin shaft 35.

[0026] It should be noted that by arranging the pin shaft 35 at the end of the protruding portion 32 close to the abutting portion 33, the distance between the clamping block 34 and the pin shaft 35 is greater than the distance between the free end of the abutting portion 33 and the pin shaft 35, thereby according to the principle of lever, the lock rod 3 can be rotated by a smaller force through the slide rod 5, and then the clamping block 34 is disengaged from the clamping groove 24. In other words, the slide rod 5 can conveniently disengage the clamping block 34 from the clamping groove 24.

[0027] In the embodiment, a first elastic member 4 is arranged between the locking rod 3 and the fixing plate 11 to prevent the clamping block 34 from rotating away from the clamping groove 24, that is, the first elastic member 4 is used to prevent the clamping block 34 from disengaging from the clamping groove 24. Specifically, the first elastic member 4 is a spring sheet in the prior art, the end of the fixing plate 11 close to the locking rod 3 is provided with a insertion slot 111, one end of the first elastic member 4 is inserted into the insertion slot 111, and the other end of the first elastic member 4 extends towards the locking rod 3 and abuts against the side of the abutting portion 33 close to the containing space 14. In this way, the elastic force of the elastic member is used to push the clamping block 34 to rotate towards the clamping groove 24 (here, the rotation is the rotation of the clamping block 34 along the central axis of the pin shaft 35). It should be noted that the first elastic member 4 is inserted into the insertion slot 111 to facilitate subsequent disassembly and replacement.

[0028] In the embodiment, the slide rod 5 is arranged on the handle 1 to push the clamping block 34 to rotate away from the clamping groove 24, that is, the slide rod 5 is used to push the clamping block 34 to disengage from the clamping groove 24. In this way, the clamping of the clamping block 34 and the clamping groove 24 is released, and then the blade 2 can be adjusted from the unfolded state to the folded state. In the normal state, the slide rod 5 is located on one side of the limiting portion 31. Specifically, the first side plate 12 and the second side plate 13 are respectively provided with slide grooves 131, the axial direction of the slide grooves 131 is parallel to the length direction of the handle 1, and the two ends of the slide rod 5 are respectively arranged in the two slide grooves 131.

[0029] In the implementation, the locking rod 3 rotates the clamping block 34 towards the clamping groove 24 by the elastic force of the first elastic member 4, and the clamping block 34 is clamped in the clamping groove 24, at this time, the blade 2 is in the unfolded state, and the slide rod 5 is located on one side of the limiting portion 31. When the user needs to fold the blade 2, the slide rod 5 is pushed to move towards the protruding portion 32, and when the force of the slide rod 5 pushing the protruding portion 32 is greater than the elastic force of the first elastic member 4, the clamping block 34 rotates away from the clamping groove 24 until the clamping block 34 completely disengages from the clamping groove 24. In this way, the user can fold the blade 2. When the blade 2 is folded, the user stops pushing the slide rod 5, at this time, the locking rod 3 is reset by the elasticity of the first elastic member 4, and in this way, the locking rod 3 pushes the slide rod 5 back to the original position.

[0030] Preferably, the containing space 14 is provided with a blocking rod 6, the blocking rod 6 is located on the side of the clamping block 34 away from the locking rod 3, and the rear end 23 of the blade 2 is recessed with an arc-shaped groove 25. When the clamping block 34 is clamped in the clamping groove 24, the arc-shaped groove 25 abuts against the blocking rod 6. In this way, the blade 2 in the unfolded state can be limited to avoid shaking of the blade 2 and affect the use effect.

[0031] Preferably, the rear end 23 of the blade 2 is provided with a positioning groove 26 on the side away from the clamping groove 24, and the clamping block 34 is located in the positioning groove 26 when the blade 2 is in the folded state. By setting the positioning groove 26, the folded state of the blade 2 is limited, so that the blade 2 is prevented from accidentally turning out of the accommodation space 14 of the handle 1 and causing injury to the user. It should be noted that when it is necessary to change the blade 2 from the folded state to the unfolded state, the blade 2 only needs to be pulled to rotate away from the accommodation space 14, at which time the side wall of the positioning groove 26 abuts against the clamping block 34. When the pulling force of the blade 2 is greater than the elastic force of the first elastic member 4, the side wall of the positioning groove 26 pushes the clamping block 34 to rotate away from the clamping groove 24, so that the blade 2 can be rotated to the unfolded state.

[0032] Please refer to Figure 4 As shown in the drawings, preferably, the blade 2 includes a blade edge side 21 and a blade back side 22, and the rear end 23 of the blade 2 is provided with a blade pushing hole 27 close to the blade back side 22. This is convenient for the user to push the blade 2 to switch from the folded state to the unfolded state. In this embodiment, the first side plate 12 and the second side plate 13 are respectively provided with a let-go groove 132 away from the lock rod 3, and the blade pushing hole 27 is located on one side of the let-go groove 132 when the blade 2 is in the folded state. This is further convenient for the user to press and push the blade pushing hole 27.

[0033] Preferably, the fixed plate 11 is provided with a through hole 112 away from the lock rod 3, and the first side plate 12 and the second side plate 13 are respectively provided with a let-go opening 133 corresponding to the through hole 112. By setting the through hole 112, it is convenient to connect the decorative hanging piece in the prior art, thereby increasing the beauty of the folding knife.

[0034] In the specific implementation of the utility model, the user holds the handle 1 with one hand, pushes the blade pushing hole with the thumb, adjusts the blade 2 from the folded state to the unfolded state, at which time the clamping block 34 of the lock rod 3 is clamped in the clamping groove 24 of the rear end 23 of the blade 2, and the arc-shaped groove 25 abuts against the blocking rod 6, thereby limiting the blade 2, preventing the blade 2 from shaking and causing injury to the user due to accidental folding. When it is necessary to adjust the blade 2 from the unfolded state to the folded state, the user holds the handle 1 with one hand, pulls the sliding rod 5 with the thumb, and makes the sliding rod 5 slide towards the protruding part 32 close to the lock rod 3, at which time the first elastic member 4 is compressed, thereby pushing the clamping block 34 to rotate away from the clamping groove 24 until the clamping block 34 completely separates from the clamping groove 24, and then the user can push the blade back side 22 of the blade 2 with the index finger to make the blade 2 rotate into the accommodation space 14.

[0035] It needs to be explained that the utility model discloses the lock rod 3 cooperation slide rod 5 is set up, and the operation is simple, and the folding knife is kept firm under the unfolded state, and the user can easily realize the unfolding or folding of blade 2 with one hand, the stop lever 6 can be set up, and the blade 2 is positioned when unfolding, avoids the blade 2 to sway, and the use effect is influenced, the push knife hole 27 and the give way slot 132 are set up, and the user is facilitated to push the blade 2 and switch to the unfolded state in the folding state.

[0036] The above description is only the preferred embodiment of the utility model, obviously, the described embodiment is only a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor belong to the protection scope of the utility model.

Claims

1. A folding knife, characterized in that, The device includes a handle (1) and a blade (2). The handle (1) includes a fixing plate (11) and a first side plate (12) and a second side plate (13) respectively fixed on both sides of the fixing plate (11). A receiving space (14) for receiving the blade (2) is formed between the first side plate (12) and the second side plate (13). The rear end (23) of the blade (2) is rotatably disposed at the end of the receiving space (14) away from the fixing plate (11). A locking rod (3) is rotatably disposed between the fixing plate (11) and the blade (2). The blade (2) has a slot (24) at its rear end (23), and a locking block (34) is fixed at one end of the locking rod (3). When the blade (2) is in the unfolded state, the locking block (34) is engaged in the slot (24). A first elastic element (4) is provided between the locking rod (3) and the fixing plate (11) to prevent the locking block (34) from rotating away from the slot (24). A sliding rod (5) is slidably provided on the handle (1) to push the locking block (34) to rotate away from the slot (24).

2. The folding knife according to claim 1, characterized in that, The locking rod (3) includes a limiting part (31), a protrusion (32) and an abutment part (33). The locking block (34) is fixedly connected to the limiting part (31). The protrusion (32) protrudes from the limiting part (31) and the abutment part (33) and extends toward the interior of the receiving space (14). The end of the protrusion (32) near the abutment part (33) is rotatably disposed in the receiving space (14) by a pin (35). Under normal conditions, the sliding rod (5) is located on one side of the limiting part (31).

3. The folding knife according to claim 2, characterized in that, The first elastic element (4) is a spring sheet. The fixing plate (11) has a slot (111) at one end near the locking rod (3). One end of the first elastic element (4) is inserted into the slot (111). The other end of the first elastic element (4) extends towards the locking rod (3) and abuts against the side of the locking rod (3) near the receiving space (14).

4. The folding knife according to claim 2, characterized in that, The first side plate (12) and the second side plate (13) are respectively provided with sliding grooves (131). The axial direction of the sliding grooves (131) is parallel to the length direction of the tool holder (1). The two ends of the sliding rod (5) are respectively slidably disposed in the two sliding grooves (131).

5. The folding knife according to claim 1, characterized in that, The receiving space (14) is provided with a stop bar (6), which is located on the side of the locking block (34) away from the locking bar (3). The rear end (23) of the blade (2) is recessed with an arc groove (25). When the locking block (34) is engaged in the slot (24), the arc groove (25) abuts against the stop bar (6).

6. The folding knife according to claim 1, characterized in that, The rear end (23) of the blade (2) is provided with a positioning groove (26) on the side away from the slot (24). When the blade (2) is in a folded state, the slot (34) is located in the positioning groove (26).

7. The folding knife according to claim 1, characterized in that, The blade (2) includes a cutting edge side (21) and a back side (22), and a push hole (27) is provided at the rear end (23) of the blade (2) near the back side (22).

8. The folding knife according to claim 7, characterized in that, The first side plate (12) and the second side plate (13) are respectively provided with a relief groove (132) on the side away from the locking rod (3). When the blade (2) is in the folded state, the push hole (27) is located on one side of the relief groove (132).

9. The folding knife according to claim 1, characterized in that, The fixed plate (11) has a through hole (112) at one end away from the locking rod (3), and the first side plate (12) and the second side plate (13) have clearance openings (133) respectively corresponding to the through hole (112).

10. The folding knife according to claim 1, characterized in that, Both the first side plate (12) and the second side plate (13) include a connecting plate (121) and a cover plate (122). A receiving space (14) is formed between the connecting plates (121) of the first side plate (12) and the second side plate (13). The cover plates (122) of the first side plate (12) and the second side plate (13) are respectively covered on the side of the corresponding connecting plate (121) away from the receiving space (14).

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