Cutter capable of quickly adjusting elasticity

Abstract

The utility model discloses a cutter capable of quickly adjusting elasticity. Comprising a tool bit, a pair of pull rod springs and two oppositely-installed handle covers, a containing cavity used for containing the tool bit is reserved between the handle covers, the other end, opposite to a tool edge of the tool bit, of the tool bit is connected with the handle covers through a rotating shaft, the two handle covers are provided with disassembling and assembling openings in the same position, and an adjusting piece is installed in each disassembling and assembling opening through a hinge shaft. And the other end of the adjusting piece is locked on the handle cover through a fastener. According to the utility model, when the force of the pull rod is adjusted, the whole body does not need to be completely disassembled, the adjusting piece can be rotated out, the pull rod spring is directly exposed and the insertion end is changed to be inserted into different insertion positions only by disassembling the fastening piece at the adjusting piece, so that the adjustment of the elastic force can be easily completed, and moreover, the design of a plurality of fixed insertion positions is more convenient to use. And fixed gears can be provided for adjustment, so that a user can conveniently select the elastic strength according to the gears.

Description

TECHNICAL FIELD

[0001] The utility model relates to a tool technical field, especially a tool of quick elastic adjustment. BACKGROUND

[0002] It is known that although the tool equipment has its danger in use, it can bring many conveniences to daily life as long as it is properly used, one of which is a spring knife that can fold the blade into the handle, which is easy to store and convenient to carry, and is especially suitable for use in the wild life, and the spring knife is one of the folding knives, which mainly adds a spring between the blade and the handle, uses the restoring force of the spring to push the blade out of the handle, and achieves the purpose of quick and automatic knife.

[0003] At present, if the existing spring knife wants to adjust the tension of the pull rod spring (i.e. elasticity), the main shaft nail screw or the fixing screw of the spacer sleeve needs to be completely disassembled, and the adjustment of the tension of the pull rod is realized by adjusting the avoidance position of the pull rod spring, but such a structure design will have the following problems:

[0004] First, when assembling the folding knife, the pull rod spring has a certain elasticity, which makes the assembly of various components more laborious and the assembly efficiency very low. Second, when maintaining and switching different use experiences of the folding knife, if the tension of the pull rod spring needs to be adjusted, the process is very complex, and various components need to be disassembled to adjust the pull rod spring. Third, the folding knife that has been adjusted and calibrated needs to be disassembled after adjusting the tension of the pull rod spring, and the position of the pull rod spring changes, the position of the pull rod spring is not unique, and it is difficult to accurately set the elastic position when reassembling the folding knife, which greatly reduces the use experience. CONTENT OF THE UTILITY MODEL

[0005] In view of the above problems in the prior art, the utility model aims to provide a tool capable of quickly adjusting the elasticity.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] The utility model provides a kind of fast-adjustable elastic cutter, including blade head, a pair of pull rod spring and two mutually opposite handle covers, the accommodation cavity for accommodating blade head remains between the handle cover, the other end of blade head relative to itself blade edge is connected with handle cover by pivot, two handle covers are located in the same position and are provided with dismounting opening, an adjusting member is installed in the dismounting opening by hinged shaft, the other end of the adjusting member is locked on handle cover by fastener, the movable opening is provided on the adjusting member, push rod is installed in the movable opening, the push rod can slide back and forth along movable opening, one end of pull rod spring is provided with barb part, the other end of pull rod spring is bent and is formed with pair of insertion end, pair of insertion opening is provided on the adjusting member, at least two pair of insertion sites are provided in the pair of insertion opening, both ends of push rod are provided with snap groove, barb part of pull rod spring is hooked in snap groove, pair of insertion end of pull rod spring is selectively inserted in certain pair of insertion site.

[0008] The blade head is provided with arc end relative to the end provided with pivot, the first clamping groove is provided on one side of the arc end, the second clamping groove is provided on the other side of the arc end, the lower end of the adjusting member is provided with avoiding space, the arc end is placed in the avoiding space, the rod body of the push rod is always attached to the end face of the arc end under the action of pull rod spring.

[0009] Preferably, the handle cover is provided with avoiding opening at movable opening, so that the top surface of both ends of the push rod is placed outside.

[0010] Preferably, the adjusting member is provided with outward protruding protruding block at avoiding opening.

[0011] Preferably, the fastener is screw.

[0012] Preferably, the blade head is provided with push pin near blade back for user to push blade head to rotate, and the push pin is placed outside.

[0013] Preferably, the top end of the push pin is mushroom head and is provided with first anti-skid surface.

[0014] Preferably, the second anti-skid surface is provided on the side end face of the handle cover and the blade back of the blade head.

[0015] Preferably, the clamping is provided on one of the handle covers.

[0016] Due to the above scheme, when the pull rod strength is adjusted, the whole does not need to be disassembled, only the fastener at the adjusting part is disassembled, the adjusting part can be rotated out, the pull rod spring is exposed directly, the plug-in end is inserted into different plug-in positions, the elastic strength adjustment can be easily completed, the design of the plurality of fixed plug-in positions can make the adjustment exist fixed gear positions, the user can select the elastic strength of the gear position, meanwhile, the pull rod spring is the most easily damaged component, the assembly is completed by adopting the form of the hook portion lap joint, when the pull rod spring is replaced, it is very simple and convenient, thereby, the maintenance is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic diagram of the embodiment of the utility model.

[0018] Figure 2 is an exploded view of the structure of the embodiment of the utility model.

[0019] Figure 3 is a structural schematic diagram of the adjusting part of the embodiment of the utility model.

[0020] Figure 4 is a structural cross-sectional view of the embodiment of the utility model after the cutter head is unfolded.

[0021] Figure 5 is a structural cross-sectional view of the embodiment of the utility model after the cutter head is folded. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the utility model more clear, the utility model is further described in detail below by combining with the drawings and embodiments.

[0023] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, and they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0025] like Figures 1 to 5 As shown, this embodiment provides a knife with quickly adjustable spring force, including a blade head 1, a pair of pull rod springs 2, and two opposing handle covers 3. A storage cavity for housing the blade head 1 is provided between the handle covers 3. The other end of the blade head 1, relative to its cutting edge, is connected to the handle cover 3 via a pivot 4. The two handle covers 3 have a disassembly port 5 located at the same position. An adjusting component 7 is installed in the disassembly port 5 via a hinge shaft 6. The other end of the adjusting component 7 is locked to the handle cover 3 by a fastener 8, which is a screw. The device is provided with a movable opening 9, in which a push rod 10 is installed. The push rod 10 can slide back and forth along the movable opening 9. One end of the pull rod spring 2 is provided with a barb part 11, and the other end of the pull rod spring 2 is bent to form a mating end 12. The adjusting member 7 is provided with a mating opening 13, in which at least two mating positions 14 are provided. Both ends of the push rod 10 are provided with a buckle groove 15. The barb part 11 of the pull rod spring 2 is hooked into the buckle groove 15, and the mating end 12 of the pull rod spring 2 is selectively inserted into a certain mating position 12.

[0026] The cutter head 1 is provided with a circular arc end 16 relative to one end of the rotating shaft 4, one side of the circular arc end 16 is provided with a first clamping groove 17, the other side of the circular arc end 16 is provided with a second clamping groove 18, the lower end of the adjusting part 7 is provided with a avoiding space, the circular arc end 16 is placed in the avoiding space, the rod body of the push rod 10 is always attached to the end face of the circular arc end 16 under the action of the pull rod spring 2.

[0027] Specifically, in use, the cutter head 1 is in a default storage state, and the push rod 10 is in the first clamping groove 17. When the cutter head 1 needs to be pushed out, the cutter head 1 is only needed to be pushed and rotated outward. In the process of rotation, the circular arc end 16 on the cutter head 1 will always press the push rod 10, so that the push rod 10 moves in the movable port 9. At this time, the pull rod spring 2 will be deformed. When the push rod 10 is pushed back to the other end of the movable port 9, the vertex of the longest side end of the circular arc end 16 just presses the push rod 10. Continue to rotate the cutter head 1, and the longest side of the circular arc end 16 is separated from the pressing of the push rod 10. At this time, according to the reaction force of the deformed pull rod spring 2, the push rod 10 is pushed, so that the push rod 10 moves until it moves to the second clamping groove 18. At this time, not only the push rod 10 forms a limiting action on the cutter head 1, but also the hinge shaft 6 at the adjusting part 7 also presses the cutter head 1, so that the cutter head 1 cannot continue to rotate. When the cutter head 1 needs to be folded, the cutter head 1 needs to be pushed back, the cutter head 1 is rotated back, the push rod 10 is pressed again, the push rod 10 is retracted, the pull rod spring 2 is deformed again, until the push rod 10 is returned to the first clamping groove 17 again, and the folding action of the cutter head 1 is completed.

[0028] When the elastic force needs to be adjusted, the whole does not need to be disassembled, only the fastener 8 at the adjusting part 7 is disassembled, one end of the adjusting part 7 is unlocked, the adjusting part 7 can be rotated out, the pull rod spring 2 is exposed, then the plug-in end 12 of the pull rod spring 2 is inserted into different plug-in positions 14. The farther the plug-in position 14 is inserted, the smaller the elastic force is, and the closer the plug-in position 14 is inserted, the greater the elastic force is. After the adjustment is completed, the adjusting part 7 is rotated back and locked, the elastic force adjustment can be easily completed. Moreover, the design of multiple fixed plug-in positions 14 can make the adjustment have fixed gears, so that the user can select the elastic force with gears; at the same time, as the most easily damaged component, the pull rod spring 2 is assembled in the form of the reverse hook part 11, so that the replacement of the pull rod spring 2 is very simple and convenient, thereby facilitating maintenance.

[0029] Further, in order to manually push back the pull rod spring 2 when necessary, the handle cover 3 at the movable port 9 is provided with an avoiding port 15, so that the top surfaces of both ends of the push rod 10 are placed outside, so that human force can act on the push rod 10, and then the push rod 10 is retracted.

[0030] Further, in order to facilitate the user to rotate the adjusting member 7 after it is unlocked from the fastener 8, the adjusting member 7 of the embodiment is provided with an outwardly protruding protrusion 16 at the avoiding opening 15, so that the user can have a force point to rotate the adjusting member 7.

[0031] Further, in order to facilitate the user to manually push the blade head 1 to rotate, the blade head 1 of the embodiment is provided with a push pin 17 near the blade back for the user to push the blade head 1 to rotate, and the push pin 17 is placed outside. In this way, when the blade head 1 needs to be pushed out, the user can act on the push pin 17 with the thumb and then push the blade head 1 outward, so that the blade head 1 can rotate.

[0032] Further, in order to prevent slipping, the top end of the push pin 17 of the embodiment is in the shape of a mushroom head and is provided with a first anti-skid surface 18, which can be helical or in the shape of a ladder.

[0033] Further, in order to reduce hand slipping when using the knife, the blade back of the blade head 1 and the side end surface of the handle cover 3 are both provided with a second anti-skid surface 19, which can be a sawtooth strip.

[0034] In addition, in order to facilitate carrying, the embodiment is provided with a hug clamp 20 on one of the handle covers 3, which can be clamped on a backpack, a pocket or a waistband and the like.

[0035] The above is only the preferred embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process transformation according to the content of the utility model specification and drawings, or direct or indirect application in other related technical fields, are all included in the patent protection range of the utility model.

Claims

1. A quick-adjustable stiffness cutter, characterized by: The utility model provides a knife head, a pair of pull rod springs and two mutually opposite handle covers, the handle covers have a storage cavity for accommodating the knife head, the other end of the knife head relative to the blade edge is connected with the handle cover through a rotating shaft, two handle covers are provided with a dismounting opening at the same position, an adjusting piece is installed in the dismounting opening through a hinged shaft, the other end of the adjusting piece is locked on the handle cover through a fastener, a movable opening is arranged on the adjusting piece, a push rod is installed in the movable opening, the push rod can slide back and forth along the movable opening, one end of the pull rod spring is provided with a barb part, the other end of the pull rod spring is bent to form a pair of insertion ends, a pair of insertion openings are arranged on the adjusting piece, at least two pair of insertion positions are arranged in the pair of insertion openings, the two ends of the push rod are provided with snap groove, the barb part of the pull rod spring is hooked in the snap groove, and the pair of insertion ends of the pull rod spring are selectively inserted into a certain pair of insertion positions. The knife head is provided with a circular arc end relative to one end provided with a rotating shaft, one side of the circular arc end is provided with a first clamping groove, the other side of the circular arc end is provided with a second clamping groove, the lower end of the adjusting piece is provided with an avoiding space, the circular arc end is arranged in the avoiding space, and the rod body of the push rod is always attached to the end face of the circular arc end under the action of the pull rod spring.

2. The quick-adjustable tension knife of claim 1, wherein: The handle cover is provided with an avoiding opening at the movable opening, so that the top surfaces of the two ends of the push rod are arranged outside.

3. A quick-adjustable tensioning tool as claimed in claim 2, wherein: The adjusting piece is provided with an outwardly protruding protrusion at the avoiding opening.

4. The quick-adjustable tension knife of claim 3, wherein: The fastener is a screw.

5. The quick-adjustable tension knife of claim 1, wherein: The knife head is provided with a push pin near the back of the knife for a user to push the knife head to rotate, and the push pin is arranged outside.

6. A quick-adjustable tensioning tool as claimed in claim 5, wherein: The top end of the push pin is in the shape of a mushroom head and is provided with a first anti-skid surface.

7. The quick-adjustable tension knife of claim 1, wherein: The back of the knife head and the side end face of the handle cover are both provided with a second anti-skid surface.

8. A quick-adjustable tensioning tool as claimed in claim 7, wherein: A clamping is arranged on one of the handle covers.

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