CN216453008U - Staggered pull saw type fish cutter and driving mechanism thereof - Google Patents

Abstract

The utility model discloses a staggered pull saw type fish knife and a driving mechanism thereof, which comprises a motor, a power module for supplying power to the motor, a switch for controlling the motor to work and a cutter; the cutter comprises a left cutter and a right cutter which are adjacent to each other in a left-right direction and are arranged side by side; the cutter head also comprises a left cutter arm and a right cutter arm which can reciprocate along the front-back direction; the left eccentric wheel and the right eccentric wheel are arranged on the left knife arm and the right knife arm respectively, and the moving tracks of the left eccentric wheel and the right eccentric wheel in the front-back direction are relatively staggered and changed when the turbines rotate; the worm gear mechanism further comprises a left connecting rod, a right connecting rod and a worm for driving the worm gear to rotate, and the surface of the worm gear and the surface of the worm are provided with helical teeth which are meshed with each other; the worm is arranged on an output shaft of the motor, the worm is driven to rotate by the motor, and the worm drives the turbine to rotate. The utility model discloses a structure is small and exquisite and portable, can improve the efficiency and the experience of slaughtering, is particularly suitable for the open-air use of fishing fan.

Description

Staggered pull saw type fish cutter and driving mechanism thereof

Technical Field

The utility model belongs to a special cutter field for cutting fish meat, concretely relates to crisscross saw formula fish knife and actuating mechanism thereof, especially a small and exquisite and portable fish's cutting tool, the convenience is in outdoor light operation.

Background

Aiming at catching fishes (aquatic products such as fishes and shrimps, and particularly fishes), the traditional slaughtering treatment mode is to use a traditional cutter to split, cut and cut, and often needs auxiliary tools such as chopping boards and the like; in the kitchen of a common household or small restaurant, there is basically an objective need for slaughtering fish, almost all being handled with traditional knives. With the large-scale development of fishery industry, for example, the fisheries in large-scale fishing or large farms generally need to enter a cold fresh transportation link after primary slaughter and then be transported to market for sale, so that the demand of concentrated slaughter of a large number of fisheries is generated, and at the moment, automatic slaughtering equipment for the fisheries is transported, is usually large and is often fixed in the slaughtering farms for use. However, both the traditional knife and the large slaughtering equipment are not suitable for field small-scale operation.

For a small amount of fish catches caught in the field, for example, the fishing enthusiasts catch by fishing, the processing mode is that a small container (such as a water bucket) is used for loading and storing, the fish catches are taken home together with the heavy storage container, and are slaughtered after the fish catches are taken home; in order to keep fresh, the storage containers are often still filled with sufficient water, but this further adds to the weight of the load, making the loading process laborious, which is a very unpleasant experience. Some small-sized refrigerating and fresh-keeping equipment such as a vehicle-mounted refrigerator cannot be carried by manpower at the moment due to the fact that refrigerating equipment is involved, and needs to depend on a transport vehicle; the bright equipment of small-size cold can carry out cold bright the saving to the catch, and need not use the mode of running water to keep the fish shrimp fresh and alive, weight and volume that on the one hand can the greatly reduced transportation, and the mode of cold bright is more simple and convenient moreover, and on the other hand can prolong fresh-keeping time greatly, even several days can both keep fresh for a long time several months to can prolong the time of field hunting, for example can make things convenient for the fishing fan to enjoy the fishing of longer time. In addition, the sea fishing activities which are made up in recent years attract a plurality of fishing enthusiasts; since sea fishing takes a long time, it may take many days to go out of the sea, and chilled fresh equipment is almost indispensable on the ship. However, the limited cold and fresh space often cannot meet the harvesting requirement for many days, and particularly, many sea fishes are large and are easy to crowd the cold and fresh space; at this time, if the fishery is slaughtered on site, only the required part is reserved, and unnecessary parts such as viscera, head, bones, shells and the like are abandoned, so that the utilization rate of the cold and fresh space can be greatly improved. Unfortunately, the traditional tools have a lot of inconvenience for slaughtering in such field conditions, and may even be too stiff for a part of the fish catch to be slaughtered in limited conditions.

In the prior art, Chinese patent document CN201821621876.8 discloses a fish knife which is small and portable in structure and suitable for field slaughtering; but the design direction of its structure has increased the function of cutter, and it is provided with folding fishhook on cutting the handle of a knife of fishknife promptly, is favorable to snatching and slaughtering under the supplementary of fishhook, and it has richened the function of cutting the fishknife, but this efficiency and the experience of cutting the slaughtering of fishknife can not really be improved effectively, still there is great not enough.

Disclosure of Invention

To the not enough that exists among the prior art, the utility model aims to design a crisscross saw formula of drawing cuts fish knife and actuating mechanism thereof, structure itself is small and exquisite and portable on the one hand, and on the other hand can improve the efficiency and the experience of slaughtering, is particularly suitable for the fishing fan and uses in the field.

In order to achieve the technical purpose, the utility model discloses a concrete scheme does: a driving mechanism of a staggered pull saw type fish knife comprises a motor, a power supply module for supplying power to the motor, a switch for controlling the motor to work and a cutting knife;

the cutter comprises;

the cutter comprises a left cutter arm and a right cutter arm which can reciprocate along the front-back direction, wherein the handle part of the left cutter is fixedly arranged on the left cutter arm from front to back, and the handle part of the right cutter is also fixedly arranged on the right cutter arm from front to back;

the cutter device also comprises a guide rail or a guide channel which is used for guiding the left cutter arm and the right cutter arm to move only along the front-back direction;

the left knife arm and the right knife arm are arranged in parallel, the rotating shaft of the turbine is arranged along the left-right direction and is vertical to the moving direction of the left knife arm and the right knife arm, a left eccentric wheel and a right eccentric wheel are respectively arranged on two sides of the turbine, the rotating shaft of the turbine penetrates through the left eccentric wheel and the right eccentric wheel, and the center of the left eccentric wheel and the center of the right eccentric wheel are respectively positioned on two sides of the rotating shaft of the turbine; when the turbine rotates, the motion tracks projected by the left eccentric wheel and the right eccentric wheel in the front and back directions are relatively staggered and transformed;

the front end of the left connecting rod is in driving connection with the rear end of the left cutter arm, and the rear end of the left connecting rod is in rotating connection with the left eccentric wheel; the front end of the right connecting rod is in driving connection with the rear end of the right cutter arm, and the rear end of the right connecting rod is in rotating connection with the right eccentric wheel; the left eccentric wheel drives the left knife arm through a left connecting rod, and the right eccentric wheel drives the right knife arm through a right connecting rod;

the worm is used for driving the worm wheel to rotate, and the surface of the worm wheel and the surface of the worm are provided with helical teeth which are meshed with each other; the worm is arranged on an output shaft of the motor, the worm is driven to rotate by the motor, and the worm drives the turbine to rotate.

The core scheme of the utility model is to design a fish cutting power mechanism with cutting power, so as to save manpower and improve slaughtering experience and efficiency; and the overall shape and the size of the utility model are close to those of the traditional knife due to the compact and small structure, thereby being convenient for carrying and operation. The specific working principle is as follows: the motor runs under the power supply of the power supply module, firstly drives the worm to rotate, the worm drives the worm wheel to rotate, the worm wheel drives the two eccentric wheels, the eccentric wheels drive the connecting rod to swing, the connecting rod outputs reciprocating motion in the front-back direction to the cutter arm, the cutter arm only reciprocates in the front-back direction under the limitation of the guide rail or the guide channel and the driving of the connecting rod, and then the cutter fixed on the cutter arm realizes the cutting motion in a drag saw type with staggered front and back. When in use, the cutting edge of the cutter is propped against the position to be cut of the fish, and the local cutting can be automatically finished; and the switch can freely control the cutting motion to be switched on or switched off.

Preferably, a bending part is arranged between the blade part and the handle part of the left knife and/or the right knife, and the bending part enables the distance between the blade parts of the left knife and the right knife to be smaller than the distance between the handle parts of the knives. Further reduce the cutting edge interval of two swoves, can improve cutting accuracy and sharpness.

Preferably, the blade part of the left or right knife is provided with a strip-shaped hole which penetrates through the left and right sides and is arranged along the front-back direction; the knife edge part of the other cutter opposite to the strip-shaped hole is provided with a mushroom-shaped convex cap, the convex cap comprises a rod part and a cap part positioned at the tail end of the rod part, the rod part penetrates through the strip-shaped hole, the cap part is positioned on the outer side of the strip-shaped hole, the cap part and the cutting edge part of the cutter where the convex cap is positioned clamp the knife edge part of the cutter where the strip-shaped hole is positioned in the middle, and the diameter of the cap part in the vertical direction is larger than the width of the strip-shaped hole in the vertical direction. The separation degree of the two knives is limited, so that the left knife or the right knife is prevented from seriously deviating or even being damaged towards the two sides or the up-and-down direction due to accidents in the cutting action process, and the personal safety is further protected.

Preferably, the opposite outer sides of the left knife and the right knife are respectively provided with a balance block, the balance blocks comprise a left balance block and a right balance block, and the left balance block is arranged between the knife edge part and the knife handle part of the left knife; the right balance block is arranged between the blade part and the handle part of the right knife;

the left balance block and the right balance block respectively extend inwards to a position between the left knife and the right knife from the outer side of the cutter where the left balance block and the right balance block are located, a pair of pressure preventing portions is formed, namely the left pressure preventing portion on the left balance block and the right pressure preventing portion on the right balance block are opposite and do not contact.

The design of the weight is important and has several uses: firstly, the vibration or shaking and even resonance which may occur to the strip-shaped cutter in the high-speed reciprocating motion are weakened or eliminated; secondly, the balance block is fixed between the blade part and the handle part, so that the cutter can be prevented from being damaged due to sudden or unexpected change of stress, for example, the cutter is blocked by excessively hard fish or fishbone, and the driving mechanism still operates at the moment, so that the cutter body is likely to be broken easily; thirdly, the movement friction resistance between the two cutters can be balanced, the distance between the two cutter edges in a static state is very small or slight contact is directly generated, inevitable slight vibration or shake exists during reciprocating motion, friction force with variable size can be generated between the two cutter edges and changes along with the size of extrusion force between the two cutter edges, in addition, in a cutting state, the two cutter edges can be directly extruded by fish or bones to generate larger extrusion force, so that larger friction force is generated, the defect generated by the increase of the friction force is obvious, at the moment, the pressure prevention parts of the cutters play a role in protection, when the two cutters are extruded and deformed inwards, the pair of pressure prevention parts abut against each other to prevent the cutters from being excessively deformed, and therefore, the extrusion force of the cutters is prevented from being excessively large to a certain extent; finally, the balance block can protect hands, prevent the hand from accidentally being injured due to the fact that the hand slides forwards and accidentally contacts the blade, and the problem of personal safety is very important.

Preferably, the edge of the blade portion is a smooth linear edge or a serrated edge.

Preferably, the guide rail is a slide rail, a chute or a guide rod arranged along the front-back direction, and the left knife arm and the right knife arm are arranged on the guide rail.

Preferably, the guide channel is a guide tube arranged in the front-back direction, the left knife arm and the right knife arm are arranged in the guide tube, and a channel matched with the shapes of the left knife arm and the right knife arm is arranged in the guide tube; or the like, or, alternatively,

the guide channel is formed into a plurality of positioning rings arranged along the front-back direction, and the left cutter arm and the right cutter arm are arranged in the middle of the positioning rings.

The cutter arm limiting mechanism is a common structure regardless of a sliding rail, a sliding chute, a guide rod or a guide pipe, and can be applied to limiting the cutter arm of the scheme to move in a limited direction. The use of more than two positioning rings is a good choice in cost, structural complexity and limiting force.

Preferably, the left cutter arm and the right cutter arm are arranged side by side at the left and right and mutually abutted, and a plurality of smooth bulges are arranged on the side surfaces which are oppositely abutted; when the left and right knife arms move in a staggered manner, the smooth bulges are used for reducing the friction force between the left and right knife arms. For a compact design, the two knife arms are brought together, which leads to direct interference, and thus to a not insignificant frictional force.

Preferably, the power module is a battery or an external power supply terminal. In the field, no external power supply is available for many times, so that the battery is the most choice and can be a replaceable battery or a rechargeable battery.

As further extension protection of the core driving mechanism, further, a staggered pull saw type fish knife comprising the driving mechanism is designed, and comprises a shell forming a handle, wherein the driving mechanism is arranged in the shell; wherein, the cutter extends out of the handle along the front end.

The core driving mechanism has a compact structure and is arranged in front and back, the appearance of the handle is provided, and the shell with the appearance of the handle can be easily designed to cover and fix the driving mechanism in the shell; wherein, the cutter obviously extends out from the front end of the handle shell, so that the whole fish knife is closer to the appearance of the traditional knife; in addition, a counterbalance needs to be provided at the front end of the handle housing to prevent the hand from accidentally extending forward to contact the blade.

The utility model discloses a scheme rotates through the motor drive worm, and worm drive turbine rotates, and the turbine drives the eccentric wheel and is eccentric rotation, controls the relative both sides that the eccentric wheel is located the pivot to control the movement track of eccentric wheel and be relative misdirection, the eccentric wheel of misdirection motion drives connecting rod, tool arm in proper order and controls the sword and carry out the staggered movement, thereby reaches the purpose of cutting the fish. This neotype cuts fish knife, it is not high to the chopping block requirement, support the cutting edge can accomplish the cutting automatically on the flesh of fish, and to a great extent does not rely on the backpressure that the chopping block provided, conveniently carries and operates, can fix the fish on one hand and another hand one-hand operation cuts the fish knife during the use (to less fish), is particularly suitable for fishing fan field work. Furthermore, the utility model discloses in adopt connecting rod linkage driven structure, more benefits still have: firstly, the design of the connecting rod drive has better wear resistance, and even a bearing can be added at the rotating connecting end of the connecting rod to meet higher wear resistance requirements; secondly, the two ends of the connecting rod are directly connected in a rotating mode, the clearance of motion fit is small, the running noise is good, and the experience is better if lubricating grease is combined; and the driving operation of the connecting rod is smoother, the energy loss of the front and back movement can be reduced, the cutting is faster, and the using efficiency is higher.

Drawings

FIG. 1 is a schematic view of the three-dimensional structure of the fish knife of the present invention;

FIG. 2 is an exploded view of the structure of the fish knife of the present invention;

FIG. 3 is a schematic view of the driving mechanism of the fish knife of the present invention;

FIG. 4 is an exploded view of the driving mechanism of the fish knife of the present invention;

FIG. 5 is a schematic view of a pair of cutters according to the present invention;

FIG. 6 is a schematic view of the cutter and arm assembly of the present invention;

FIG. 7 is a plan view of the cutter in a separated state and partially enlarged;

FIG. 8 is a plan view of the cutter in a combined state and partially enlarged;

FIG. 9 is a schematic view of a single-blade structure of the driving mechanism of the present invention;

FIG. 10 is a schematic view of the linkage state of the knife arm according to the present invention;

fig. 11 is a schematic structural view of the left knife arm of the present invention;

fig. 12 is a schematic diagram of the relative position structure of a pair of knife clips according to the present invention;

fig. 13 is a schematic view of a motor driving structure of the present invention;

FIG. 14 is a schematic view of a turbine according to the present invention;

FIG. 15 is an exploded view of the turbine and connecting rod connection structure of the present invention;

reference numerals:

the fish knife comprises a fish knife 100, a handle 1, a cutter 2, a balance block 3, a motor 4, a power module 5, a left shell 10b, a right shell 10a and a switch 6;

a left knife 21, a right knife 22, a left knife arm 23, a right knife arm 24, a left knife clamp 25, a right knife clamp 26, a first positioning ring 27 and a second positioning ring 28;

the left knife edge part 211, the right knife edge part 221, the left knife tip 212, the right knife tip 222, the left bending part 213, the right bending part 223, the left shank part 214, the right shank part 224, the convex cap 217, the rod part 2172, the cap part 2171, the bar-shaped hole 227, the fine hole part 2271, the coarse hole part 2272, the left balance guide hole 2131, the left balance mounting hole 2132, the right balance guide hole 2231, the right balance mounting hole 2232, the left bayonet 215, the right bayonet 225, the left tail hole 216 and the right tail hole 226;

a left balance weight 31, a right balance weight 32, a left pressure prevention portion 311, a right pressure prevention portion 321;

the worm 41, the worm wheel 42, the worm wheel rotating shaft 43, the rotating shaft fixing seat 44, the left connecting rod 45, the right connecting rod 46, the left pin rod 47 and the right pin rod 48; a left eccentric 422, a right eccentric 423, a left link pin hole 452, a right link pin hole 462, a left link bearing hole 451, a right link bearing hole 461;

a left blade arm clamp hole 231, a right blade arm clamp hole 241, a left blade arm pin hole 232, smooth protrusions 2331, 2332, 2333, a left blade arm mounting channel 234;

the tool comprises a left tool clamping bolt 251, a right tool clamping bolt 261, a left spring clamp 253, a right spring clamp 263, a left tool clamping head 252 and a right tool clamping head 262.

Detailed Description

In the description of the present invention, it is to be understood that the terms "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and understanding, and the devices or elements which are not specifically mentioned must have a specific orientation or limitation. For example, in the present scheme, the direction of the tool tip is taken as the front, the direction of the tool holder is taken as the rear, the downward direction of the cutting edge is taken as the lower direction, the reverse direction is taken as the upper direction, and the two sides of the blade are taken as the left side and the right side.

As shown in fig. 1 to 15, the utility model discloses a crisscross saw formula of drawing cuts fish knife and actuating mechanism thereof of specific embodiment, its structure itself is small and exquisite and portable, can improve the efficiency and the experience of slaughtering, is particularly suitable for fishing fan field usage.

The fish knife 100 has a handle 1, and is composed of a housing including a left housing 10b and a right housing 10a, the left and right housings cover and fix a drive mechanism inside the housing from the left and right sides, and a cutter 2 extends out of the handle 1 along the front end. The driving mechanism is compact in structure and arranged in front and back, the appearance of the handle is provided, and the shell with the appearance of the handle can be easily designed to cover and fix the driving mechanism in the shell; wherein it is apparent that the cutting blade 2 extends from the front end of the housing of the handle 1, making the fish knife 100 as a whole more similar to the external shape of a conventional knife.

As can be seen from fig. 1, the switch 6 is arranged on the shell of the handle 1 and is designed at the lower side of the front end of the handle 1, the position is just the position corresponding to fingers when the handle is held by hands, when in use, the fingers can press the switch 6 by holding the handle in a normal posture, and the switch can be pressed by slightly holding force. The switch 6, the power module 5 and the motor 4 are connected through wires to form a control loop, when the switch is switched on, the motor works, otherwise, the motor stops working. The power module 5 is arranged at the rear end of the handle, preferably adopts a battery, and has no external power supply in the field, so that the battery is the most choice, can be a replaceable battery or a rechargeable battery.

As can be seen from fig. 2 to 4, the specific structure of the driving mechanism inside the handle 1, in which the motor 4 is located at the front end of the battery and close to the battery, and continues forward, further includes a worm 41, a worm wheel 42, a left connecting rod 45, a right connecting rod 46, a left knife arm 23, a right knife arm 24, and the cutter 2, which are sequentially arranged from back to front in a linkage relationship.

As can be seen from fig. 4 and 13 to 15, the surface of the worm wheel 42 and the surface of the worm 41 are provided with helical teeth that mesh with each other, and the worm 41 is provided directly on the rotational shaft of the motor 4 in the front-rear direction. The worm wheel 42 is arranged at the lower side of the worm 41, the surfaces of the worm wheel 42 and the worm wheel are meshed with each other through matched teeth, a worm wheel rotating shaft 43 is arranged along the center of the worm wheel 42, and the worm wheel rotating shaft 43 is arranged at the left and the right and is perpendicular to the rotating direction of the worm 41. The two ends of the turbine rotating shaft 43 are fixed by the rotating shaft fixing seats 44.

The left eccentric wheel 422 and the right eccentric wheel 423 are respectively arranged on two sides of the turbine 42, the turbine rotating shaft 43 passes through the left eccentric wheel 422 and the right eccentric wheel 423, the outer peripheral surfaces of the two eccentric wheels wrap the passing point of the turbine rotating shaft 43 in the circumference, but simultaneously, the center of the left eccentric wheel 422 and the center of the right eccentric wheel 423 are respectively arranged on two sides of the turbine rotating shaft 43, so that when the turbine 42 rotates, the moving tracks of the left eccentric wheel 422 and the right eccentric wheel 423 projected in the front and back direction are relatively staggered and changed.

The left connecting rod 45 and the right connecting rod 46 are further included, a left connecting rod bearing hole 451 is formed in the rear end of the left connecting rod 45, and a left connecting rod pin hole 452 is formed in the front end of the left connecting rod 45; the rear end of the right connecting rod 46 is provided with a right connecting rod bearing hole 461, and the front end is provided with a right connecting rod pin hole 462; the structure of the left link 45 and the right link 46 is uniform. During installation, the left connecting rod 45 and the right connecting rod 46 are respectively installed inwards from two sides of the left eccentric wheel 422 and the right eccentric wheel 423, so that the turbine rotating shaft 43 passes through bearing holes of the two connecting rods, the two bearing holes are respectively sleeved on the peripheries of the two eccentric wheels, and the inner side surfaces of the bearing holes are in relative rotation connection with the outer peripheral surfaces of the eccentric wheels, or in connection through bearings; the friction surfaces can also be in direct sliding contact connection, so that the two can generate relative sliding friction, and in this case, some known wear-resistant materials can be selected as the friction surfaces; a smooth wear washer or lubricant may also be provided between the two to reduce frictional resistance during rotation.

In addition, as the turbine rotating shaft 43 is positioned in the bearing hole, the turbine 42 can conveniently and continuously rotate quickly along the same direction, and the movement conflict between the connecting rod and the turbine rotating shaft is avoided; because the centers of the two eccentric wheels are respectively positioned at the two sides of the bearing rotating shaft 43, when the turbine 42 continuously rotates, the motion tracks of the two eccentric wheels in the front and back directions are ensured to be in opposite motion directions at any time, and can be converted back and forth, thereby providing feasibility for driving the cutter to do staggered motion.

As shown in fig. 4, 10 and 11, the left link pin hole 452 and the right link pin hole 462 are respectively connected to the knife arm pin hole at the rear end of the knife arm through the left pin rod 47 and the right pin rod 48, and the pin rod and the pin hole are matched to realize the rotary connection. As can be seen in fig. 11, a left blade arm pin hole 232 is formed at the rear end of the left blade arm 23, and the left pin rod 47 passes through the left blade arm pin hole 232 and the left link pin hole 452 at the same time, so that the rotational connection can be realized; the structure of the right knife arm is basically the same as that of the left knife arm.

The left and right arms 23 and 24 are used for fixing the left and right blades 21 and 22, respectively, and as can be seen from fig. 11, a mounting channel 234 extending rearward along the inside of the left blade arm 23 is provided at the front end of the left blade arm 23, and when mounted, the left blade shank portion 214 of the left blade 21 is inserted from the mounting channel 234 and fixed in the left blade arm. The fixing structure of the right knife arm and the right knife is basically the same as that of the left knife arm and the left knife, but is symmetrical so as to keep the left and right balance.

As can also be seen in fig. 10 and 11, the left blade arm 23 and the right blade arm 24 are arranged side by side and abut against each other, and smooth protrusions are provided on the opposite abutting sides, such as the smooth protrusions 2331, 2332, 2333 provided on the left blade arm 23; a plurality of alternately distributed smooth protrusions are also arranged on one side of the right tool arm 24 opposite to the left tool arm. When the left and right knife arms move in a staggered manner, the smooth bulges are used for reducing the friction force between the left and right knife arms. For a compact design, the two knife arms are put together, which leads to direct interference, and thus a certain friction force is generated.

In addition, as shown in fig. 5, the rear end of the handle portion of the left blade 21 is provided with a left bayonet 215, the rear end of the handle portion of the right blade 22 is also provided with a right bayonet 225, and the left bayonet 215 and the right bayonet 225 are used for being fixed in the blade arm.

As can be seen from fig. 10 to 12, a left blade holder 25 is provided in the left blade arm 23 at a position corresponding to the left bayonet 215 after the left blade 21 is inserted into the mounting channel, and similarly, a right blade holder 26 is provided in the right blade arm 24 at a position corresponding to the right bayonet 225 after the right blade 22 is inserted into the mounting channel.

As shown in fig. 12, the left knife clip 25 has a substantially L-shaped structure, which includes a left knife clip head 252 extending vertically at the upper end, a left knife clip bolt 251 extending laterally at the lower end, and a left spring clip 253 protruding obliquely downward from the back of the L-shape. The right knife holder 26 has a structure symmetrical with the left knife holder 25 in the left-right direction, and also includes a right knife holder head 262 at the upper end extending vertically, a right knife holder bolt 261 at the lower end extending horizontally, and a right spring holder 263 protruding downwards obliquely from the back of the L-shape.

As shown in fig. 10, a locking hole 231 of the left tool arm is formed to extend upward at a position corresponding to the rear end of the left tool arm 23, and a locking hole 241 of the right tool arm is formed to extend upward at a position corresponding to the rear end of the right tool arm 24.

As shown in fig. 6, 9 and 11, the cutting knife is fixed in the knife arm, the handle portion of the cutting knife (e.g., the left knife 21) is inserted into the bottom portion from the mounting channel (e.g., the mounting channel 234 of the left knife arm), then the knife clip (e.g., the left knife clip 25) is aligned with the bayonet position on the knife handle, and is lifted up from bottom to top, so that the latch (e.g., the left knife latch 251) of the knife clip is transversely clamped in the bayonet (e.g., the left bayonet 215) on the knife handle, and the cutting knife is locked in the front-back direction (the left-right direction can clamp the cutting knife by adjusting the left-right width of the mounting channel); in addition, in order to keep the cutter card locked continuously, a spring or an elastic sheet is applied to the spring card to keep the cutter card lifted, so that the cutter can be locked continuously; meanwhile, a clamping head (such as a left tool clamping head 252) of the tool clamp penetrates out of a clamping hole (such as a clamping hole 231 of the left tool arm) on the tool arm from the upper part; the exposed clamping head can be conveniently withdrawn by means of external force, and the cutter clamp can be moved downwards by pressing the clamping head, so that the clamping bolt is downwards separated from the bayonet of the cutter handle to release the fixation of the cutter, and the cutter can be pulled out from the installation channel at the moment.

The working principle of the left knife card 25 and the right knife card 26 is consistent.

As shown in fig. 3 and 4, in this embodiment, the guiding channel is designed as two front and back positioning rings, namely a first positioning ring 27 and a second positioning ring 28, the space between the two positioning rings is formed as a guiding channel, and the left and right knife arms share one guiding channel for guiding and limiting the movement of the left and right knife arms only in the front and back directions. The left knife arm 23 and the right knife arm 24 are arranged side by side from left to right and are embedded into a guide channel between two positioning rings. Considering that the left and right knife arms can rub against the positioning ring during the alternate movement, smooth bumps can be provided at the contact positions (on the positioning ring or on the knife arms) to further reduce friction.

As shown in fig. 5 to 8, the cutter 2 includes a pair of left and right blades 21 and 22 adjacent to each other in a left-right direction, and each of the left and right blades includes a blade portion at a front end and a shank portion at a rear end. Specifically, the left knife 21 is composed of a left knife edge 212, a left knife blade part 211, a left bending part 213, a left knife handle part 214 and a left tail hole 216 in sequence from front to back, wherein a left bayonet 215 is arranged at the back section of the left knife handle part 214, and the bayonet faces downwards; the right knife 22 has a structure symmetrical to the left knife 21, and the structure from front to back also comprises a right knife tip 222, a right knife blade part 221, a right bending part 223, a right knife handle part 224 and a right tail hole 226 in sequence, wherein the right bayonet 225 is arranged at the rear end of the right knife handle 224, and the bayonet faces downwards. In this embodiment, the cutting edges of the blade portions of the two cutters are preferably smooth linear cutting edges, and in other embodiments, one or both of the cutting edges may be serrated.

The bending parts oppositely arranged on the left knife and the right knife enable the distance between the blade parts of the two knives to become smaller, the blade distance between the two knives is further reduced, and the cutting precision and the sharpness are improved. A left balance mounting hole 2132 and a left balance guide hole 2131 are formed in the left bending part 213 and used for mounting the left balance block 31; in contrast, a right balance guide hole 2231 and a right balance mounting hole 2232 are provided at the right bent portion 223 for mounting the right balance weight 32.

As shown in fig. 5, 7 and 8, the blade part 221 of the right knife is provided with a strip hole 227 penetrating through the left and right sides, and the strip hole is arranged along the front-back direction; the blade portion 211 of the left knife opposite to the bar hole 227 is provided with a mushroom-shaped convex cap 217, the convex cap 217 comprises a rod portion 2172 and a cap portion 2171 located at the end of the rod portion, the rod portion 2172 penetrates through the bar hole 227, the cap portion 2171 is located outside the bar hole 227, the cap portion 2171 and the blade portion 211 of the left knife sandwich the blade portion 221 of the right knife, and the diameter of the cap portion 2171 in the vertical direction is larger than the width of the bar hole 227 in the vertical direction. The separation degree of the two knives is limited, so that the left knife or the right knife is prevented from seriously deviating or even being damaged towards the two sides or the up-and-down direction due to accidents in the cutting action process, and the personal safety is further protected.

One end of the strip-shaped hole 227 is provided with a communicated thick hole portion 2272, the width of the strip-shaped hole per se in the vertical direction relative to the thick hole portion is smaller and is a fine hole portion 2271, and the diameter of the thick hole portion 2272 is larger than that of the cap portion 2171, so that the strip-shaped hole is convenient to mount; when the installation is carried out, the cap 2171 is firstly penetrated through the thick hole 2272, then the relative positions of the two cutters are moved to move the convex cap 217 into the thin hole 2271, and when the two cutters normally move in a staggered way, the convex cap 217 only moves within the range of the thin hole 2271 due to the limitation of the stroke.

As shown in fig. 2 to 4, the balance weights 3 are disposed on the opposite outer sides of the left and right blades, and specifically include a left balance weight 31 and a right balance weight 32. The left balance weight 31 and the right balance weight 32 are symmetrical and consistent in structure, even almost consistent in weight, and are beneficial to balancing the motion inertia of the two cutters. A screw hole and a hole column are arranged on the mounting surface of any balance block, when the balance block is fixedly mounted from the outer side of the bending part of the cutter, the hole column penetrates through the balance guide holes 2131 and 2231, the screw hole is abutted against the outer sides of the balance mounting holes 2132 and 2232, and at the moment, a screw is screwed on the screw hole after penetrating through the balance mounting hole from the inner side of the bending part, so that the balance block can be fixed; the fixing mode of the left and right balance blocks is consistent.

The left balance weight 31 and the right balance weight 32 respectively extend inwards from the outer side of the cutter where the left balance weight 31 and the right balance weight 32 are located to the position between the left cutter and the right cutter, so that a pair of pressure preventing parts is formed, the pressure preventing parts are a left pressure preventing part 311 on the left balance weight 31 and a right pressure preventing part 321 on the right balance weight 32, and the two pressure preventing parts are opposite and do not contact with each other.

The design of the counterweight 3 is important and has several purposes: firstly, the vibration or shaking and even resonance which may occur to the strip-shaped cutter in the high-speed reciprocating motion are weakened or eliminated; secondly, the balance block is fixed between the blade part and the cutter handle part, so that the cutter damage caused by sudden or unexpected change of resistance of the cutter can be prevented, for example, the cutter is blocked by excessively hard fish or fishbone, and the driving mechanism still operates at the moment, so that the cutter body is likely to be broken easily; thirdly, the movement friction resistance between the two cutters can be balanced, the distance between the two cutter edges in a static state is very small or slight contact is directly generated, inevitable slight vibration or shake exists during reciprocating motion, friction force with variable size can be generated between the two cutter edges and changes along with the size of extrusion force between the two cutter edges, in addition, during cutting operation, the two cutter edges can be directly extruded by fish or bones to generate larger extrusion force, so that larger friction force is generated, the defect caused by the increase of the friction force is obvious, at the moment, the pressure-proof parts of the cutters play a role in protection, when the two cutters are extruded and deformed inwards, the pair of pressure-proof parts abut against each other to prevent the cutters from being excessively deformed, and therefore, the situation that the friction force is excessively generated due to the overlarge extrusion force between the cutters is prevented to a certain extent; finally, the balance block can protect hands and prevent fingers from accidentally contacting the blade forwards so as to avoid accidental injury.

The core of the embodiment is that a fish cutting mechanism with cutting power is designed, so that the labor is saved, and the slaughtering experience and efficiency are improved; and the overall shape and size of the knife are close to those of the traditional knife, so that the knife is convenient to carry and operate. The specific working principle is as follows: the motor 4 is operated under the power supply of the power supply module 5, firstly the worm 41 is driven to rotate, the worm drives the worm wheel 42 to rotate, the worm wheel drives the two eccentric wheels 422 and 423, the eccentric wheels drive the connecting rods 45 and 46 to swing, the connecting rods output reciprocating motion in the front-back direction to the cutter arms 23 and 24, the cutter arms only reciprocate in the front-back direction under the limitation of the positioning rings 27 and 28 and the driving of the connecting rods, and the cutting knives 21 and 22 fixed on the cutter arms realize the front-back staggered dragsaw type cutting motion. When in use, the cutting edge of the cutter is propped against the position to be cut of the fish, and the local cutting can be automatically completed; and the switch can freely control the cutting motion to be switched on or switched off.

The fish knife of cutting of this embodiment, it is not high to the chopping block requirement, supports the cutting edge and can accomplish automatic cutout on the flesh of fish, and to a great extent does not rely on the backpressure that the chopping block provided, conveniently carries and operates, can fix the fish in one hand and another hand one-hand operation cuts the fish knife during the use (for example to less fish), is particularly suitable for fishing fan field work. In addition, the structure of linkage drive is adopted in the embodiment, so that the advantages are further provided: firstly, the design of the connecting rod drive has better wear resistance, and even a bearing can be added at the rotating connecting end of the connecting rod to meet higher wear resistance requirements; secondly, the two ends of the connecting rod are directly connected in a rotating mode, the clearance of motion fit is small, the running noise is good, and the experience is better if lubricating grease is combined; and the driving operation of the connecting rod is smoother, the energy loss of the front and back movement can be reduced, the cutting is faster, and the using efficiency is higher.

Variations and modifications to the above-described embodiments may occur to those skilled in the art, in light of the above teachings and teachings. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should fall within the protection scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims (10)

1. A driving mechanism of a staggered pull saw type fish knife comprises a motor, a power supply module for supplying power to the motor, a switch for controlling the motor to work and a cutting knife; it is characterized in that the preparation method is characterized in that,

the cutter comprises a pair of left and right adjacent side-by-side cutters, and the left and right cutters respectively comprise a cutter blade part at the front end and a cutter handle part at the rear end;

the cutter comprises a left cutter arm and a right cutter arm which can reciprocate along the front-back direction, wherein the handle part of the left cutter is fixedly arranged on the left cutter arm from front to back, and the handle part of the right cutter is also fixedly arranged on the right cutter arm from front to back;

the cutter head also comprises a guide rail or a guide channel which is used for guiding the left cutter arm and the right cutter arm to move only along the front-back direction;

the left knife arm and the right knife arm are arranged in parallel, and the left knife arm and the right knife arm are arranged in parallel; when the turbine rotates, the motion tracks projected by the left eccentric wheel and the right eccentric wheel in the front and back directions are relatively staggered and transformed;

the front end of the left connecting rod is in driving connection with the rear end of the left cutter arm, and the rear end of the left connecting rod is in rotating connection with the left eccentric wheel; the front end of the right connecting rod is in driving connection with the rear end of the right cutter arm, and the rear end of the right connecting rod is in rotating connection with the right eccentric wheel; the left eccentric wheel drives the left knife arm through a left connecting rod, and the right eccentric wheel drives the right knife arm through a right connecting rod;

the worm is used for driving the worm wheel to rotate, and the surface of the worm wheel and the surface of the worm are provided with helical teeth which are meshed with each other; the worm is arranged on an output shaft of the motor, the worm is driven to rotate by the motor, and the worm drives the turbine to rotate.

2. The driving mechanism of the fish knife according to claim 1, wherein a bending portion is provided between the blade portion and the handle portion of the left knife and/or the right knife, and the bending portion makes the distance between the blade portions of the left knife and the right knife smaller than the distance between the handle portions.

3. The driving mechanism of the fish knife according to claim 1 or 2, wherein the blade portion of the left knife or the right knife is provided with a strip-shaped hole penetrating through the left side and the right side, and the strip-shaped hole is arranged along the front-back direction; the knife edge part of the other cutter opposite to the strip-shaped hole is provided with a mushroom-shaped convex cap, the convex cap comprises a rod part and a cap part positioned at the tail end of the rod part, the rod part penetrates through the strip-shaped hole, the cap part is positioned on the outer side of the strip-shaped hole, the cap part and the cutting edge part of the cutter where the convex cap is positioned clamp the knife edge part of the cutter where the strip-shaped hole is positioned in the middle, and the diameter of the cap part in the vertical direction is larger than the width of the strip-shaped hole in the vertical direction.

4. The driving mechanism of the fish knife according to claim 1 or 2, wherein the balance blocks are arranged on the opposite outer sides of the left knife and the right knife, and comprise a left balance block and a right balance block, and the left balance block is arranged between the blade part and the handle part of the left knife; the right balance block is arranged between the blade part and the handle part of the right knife;

the left balance block and the right balance block respectively extend inwards to a position between the left knife and the right knife from the outer side of the cutter where the left balance block and the right balance block are located, a pair of pressure preventing portions is formed, namely the left pressure preventing portion on the left balance block and the right pressure preventing portion on the right balance block are opposite and do not contact.

5. The driving mechanism for a fish knife according to claim 1, wherein the blade edge of the blade portion is a smooth linear blade or a serrated blade.

6. The driving mechanism of the fish knife according to claim 1, wherein the guide rail is a slide rail, a chute or a guide rod arranged in the front-back direction, and the left knife arm and the right knife arm are arranged on the guide rail.

7. The driving mechanism of the fish knife according to claim 1, wherein the guiding channel is a guide tube arranged in the front-back direction, the left knife arm and the right knife arm are arranged in the guide tube, and a channel matching the shapes of the left knife arm and the right knife arm is arranged in the guide tube; or the like, or, alternatively,

the guide channel is formed into a plurality of positioning rings arranged along the front-back direction, and the left cutter arm and the right cutter arm are arranged in the middle of the positioning rings.

8. The driving mechanism of the fish knife according to claim 1 or 7, wherein the left knife arm and the right knife arm are arranged side by side and mutually butted, and a plurality of smooth bulges are arranged on the opposite butted side surfaces; when the left and right knife arms move in a staggered manner, the smooth bulges are used for reducing the friction force between the left and right knife arms.

9. The driving mechanism of the fish knife according to claim 1, wherein the power module is a battery or an external power terminal.

10. A staggered saw fish knife comprising a drive mechanism as claimed in any one of claims 1 to 9.

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