CN115088584B - Portable safe hand saw - Google Patents
Portable safe hand saw Download PDFInfo
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- CN115088584B CN115088584B CN202210786389.1A CN202210786389A CN115088584B CN 115088584 B CN115088584 B CN 115088584B CN 202210786389 A CN202210786389 A CN 202210786389A CN 115088584 B CN115088584 B CN 115088584B
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- 230000005540 biological transmission Effects 0.000 claims description 8
- 239000000696 magnetic material Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 abstract description 12
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 230000033001 locomotion Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 3
- 239000002023 wood Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G23/00—Forestry
- A01G23/02—Transplanting, uprooting, felling or delimbing trees
- A01G23/08—Felling trees
- A01G23/091—Sawing apparatus specially adapted for felling trees
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- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
- Forests & Forestry (AREA)
- Environmental Sciences (AREA)
- Sawing (AREA)
Abstract
The utility model relates to the field of hand saws, and discloses a portable safe hand saw, which comprises a saw blade and two bases which are in rotary connection, wherein the end part of each base far away from a rotary point is rotationally connected with a supporting component, each supporting component comprises a cantilever which is rotationally connected with the corresponding base, connecting rod components are installed in the two cantilevers in a rotary mode through rotating shafts, each connecting rod component comprises a connecting rod and a gear, and a shell fixedly connected with the saw blade is arranged on one side, far away from the cantilever, of each connecting rod. According to the utility model, the connecting rod folding deformation mechanism is formed by matching among the supporting component, the limiting component, the connecting rod component, the adjusting component and the like, the working state and the non-working state can be easily switched by opening and closing the cantilever, the saw blade is not required to be manually pinched to rotate out, and the position of the saw blade is not required to be considered when the saw blade is retracted, so that a user is more worry-saving and labor-saving; when the working state and the non-working state are switched by matching with the connecting rod folding deformation mechanism, the device can be automatically and quickly switched to the next state.
Description
Technical Field
The utility model relates to the technical field of hand saws, in particular to a portable safe hand saw.
Background
The hand saw is a common hand tool for cutting, can be used for rapidly sawing materials through saw teeth on a saw blade, and is commonly used for wood processing; in the process of sawing timber, a part to be cut is generally firstly marked with a division score line, then a hand saw is used for dividing the wood, a large amount of saw dust is generated during cutting, and the work personnel are greatly affected.
Chinese patent publication No. CN211322357U discloses a hand saw for garden felling, including the saw blade connecting seat, the interior surface movable mounting of saw blade connecting seat has the felling saw blade, the lower surface of felling saw blade is provided with crisscross sawtooth, the front surface fixed mounting of saw blade connecting seat has the saw blade fixed screw, the saw blade fixed screw runs through saw blade connecting seat and felling saw blade. The utility model can increase the groove tension of the saw teeth, prevent the saw from being blocked when cutting wood, improve the felling trimming speed, and fold the felling saw blade, thereby folding the whole hand saw and bringing more convenience for carrying the hand saw.
When the device is used, the saw blade needs to be pinched to enable the saw blade to rotate out of the saw blade connecting seat, the saw blade is not easy to rotate out of the saw blade due to the smooth surface of the saw blade, and the saw blade connecting seat are clamped when the saw blade is retracted after the saw blade is used, so that certain use limitation exists.
Accordingly, there is a need to provide a portable safety hand saw that addresses the above-described problems.
Disclosure of Invention
The utility model aims to provide a portable safe hand saw, which solves the problems that in the prior art, a saw blade needs to be pinched to rotate out of a saw blade connecting seat, the saw blade is not easy to rotate out due to the smooth surface of the saw blade, and the saw blade connecting seat need to be clamped when the saw blade is retracted after the use.
In order to achieve the purpose, the safety handsaw is designed, when the handsaw is used, the saw blade is not required to be manually pinched to rotate out, and when the saw blade is retracted, the position of the saw blade is not required to be considered too much.
Based on the thought, the utility model provides the following technical scheme: the portable safe hand saw comprises a saw blade and two bases which are in rotary connection, wherein the end parts of the bases, far away from a rotary point, are rotationally connected with a supporting component, the supporting component comprises cantilevers which are rotationally connected with the bases, connecting rod components are installed in the two cantilevers in a rotary mode through rotary shafts in a common mode, each connecting rod component comprises a connecting rod and a gear, one side, far away from the cantilever, of each connecting rod is provided with a shell fixedly connected with the saw blade, an adjusting component connected with the gear is slidably installed in the shell, and a limiting component for limiting after the two cantilevers are attached is jointly arranged between the two cantilevers; when the shell is attached to the base, the saw blade is positioned between the two cantilevers, and when the shell is attached to the cantilevers, the saw blade extends out from between the two cantilevers.
As a further aspect of the utility model: the number of the connecting rods is two, the two connecting rods are respectively connected with the two cantilevers in a rotating way, the end parts of the connecting rods, which are far away from the cantilevers, are fixedly provided with meshing parts, and the two meshing parts are in transmission connection; the inside of the meshing part is fixedly provided with a supporting rod which is rotationally connected with the shell, and the gear is positioned in the shell and fixedly sleeved outside the supporting rod.
As a further aspect of the utility model: the length of the connecting rod is equal to one half of the length of the cantilever, and the connecting rod coincides with the midpoint of the length direction of the cantilever based on the rotation point of the cantilever.
As a further aspect of the utility model: the surface of the connecting rod is fixedly provided with a side plate, and a first spring is fixedly arranged between the side plate and the shell.
As a further aspect of the utility model: the adjusting component comprises a rack which is connected with the gear transmission and is in sliding fit with the shell, the rack is arranged between the side plate and the corresponding gear, a second spring is fixedly arranged between the surface of the rack and the inner wall of the shell, and the rack and the side plate are both made of magnetic materials and the magnetic poles of the rack and the side plate are opposite.
As a further aspect of the utility model: the surface of casing outwards protrusion is formed with the boss, and the both ends of first spring are connected with curb plate and boss fixed respectively.
As a further aspect of the utility model: the cantilever is U-shaped, a notch is formed in the end part of the cantilever far away from the base, and a slope matched with the notch in shape is formed in the surface of the connecting rod; when the shell is attached to the cantilever, the notch is clamped with the slope.
As a further aspect of the utility model: the limiting assembly comprises arc-shaped clamping grooves which are formed in the bottoms of the two cantilevers in a penetrating mode, and a buckle movably clamped with the corresponding clamping groove is rotatably installed at the bottom of one cantilever.
As a further aspect of the utility model: one side of the cantilever away from the base is provided with a holding part, and the holding part and the limiting component are arranged in a dislocation mode.
As a further aspect of the utility model: the cantilever is provided with a plurality of through holes corresponding to the position of the holding part in a penetrating way, and the through holes are horizontally arranged along the holding part.
As a further aspect of the utility model: the end part of the rack, which is close to the base, is fixedly provided with a hose, the end part of the hose, which is far away from the rack, is flush with the outer surface of the shell, an elastic air bag is communicated with the surface of the hose, and a ball corresponding to the position of the air bag is slidably arranged in the shell.
Compared with the prior art, the utility model has the beneficial effects that: the connecting rod folding deformation mechanism is formed by the cooperation among the supporting component, the limiting component, the connecting rod component, the adjusting component and the like, so that the effective protection of the saw blade can be realized in a non-working state, and the operation is comfortable and the hand is not injured in the working state; the working state and the non-working state can be easily switched by opening and closing the cantilever, the saw blade is not required to be manually pinched to rotate out, and the position of the saw blade is not required to be considered when the saw blade is retracted, so that a user is more careful and labor-saving; when the matched connecting rod folding deformation mechanism is used for switching the working state and the non-working state, the connecting rods do not need to be manually stirred when the connecting rods are perpendicular to the surface of the shell, namely, when the two connecting rods are in the opposite state, the connecting rods can be automatically and quickly switched to the next state, so that the user is further worry-saving and labor-saving, and the practicability is higher.
Drawings
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a perspective view of the overall structure of the present utility model;
FIG. 2 is a bottom view of the cantilever and base of the present utility model;
FIG. 3 is an enlarged view of the structure of FIG. 1 at A;
FIG. 4 is an enlarged view of the structure at B in FIG. 2;
FIG. 5 is a schematic view of the housing and connecting rod structure of the present utility model;
FIG. 6 is an enlarged view of the structure at C in FIG. 5;
FIG. 7 is a schematic view of the internal structure of the housing of the present utility model;
FIG. 8 is a schematic view of the hose and rack construction of the present utility model;
FIG. 9 is an enlarged view of the structure of FIG. 8 at D;
FIG. 10 is a schematic view of the hose and manifold construction of the present utility model;
fig. 11 is a schematic view of the structure of the saw blade of the present utility model in its operative condition.
In the figure: 1. a base; 2. a support assembly; 3. a housing; 4. a connecting rod assembly; 5. a clamping groove; 6. a buckle; 7. a boss; 8. an adjustment assembly; 9. a first chute; 10. a second chute; 11. saw blade; 201. a cantilever; 202. an avoidance groove; 203. a grip portion; 204. a notch; 401. a connecting rod; 402. a support rod; 403. a ramp; 404. an engagement portion; 405. a gear; 406. a side plate; 407. a first spring; 801. a rack; 802. a hose; 803. an air bag; 804. a ball; 805. a shunt block.
Detailed Description
Embodiment one:
referring to fig. 1 to 4 and fig. 7, an embodiment of the present utility model provides a portable safety hand saw, which is mainly used for improving convenience when the hand saw is used, the hand saw includes two bases 1 rotatably connected, and the rotational connection positions of the two bases 1 are left ends (view angle of fig. 1), the base 1 is integrally U-shaped, and the right end thereof is rotatably connected with a supporting component 2, which cooperates with the base 1 to play a role in integrally supporting, the supporting component 2 includes a cantilever 201 rotatably connected with the base 1, the cantilever 201 is fixedly connected with an end portion of the base 1 away from the rotational connection position, the cantilever 201 is U-shaped, and U-shaped openings of the two cantilevers 201 are opposite; the inside of the two cantilevers 201 are provided with a connecting rod assembly 4 in a co-rotation way through a rotating shaft, the connecting rod assembly 4 comprises a connecting rod 401 and a gear 405, one side of the connecting rod 401, which is far away from the cantilevers 201, is provided with a shell 3, and one side of the shell 3, which is far away from the base 1, is fixedly provided with a saw blade 11 through a bolt; in order to facilitate the connecting rod 401 to move from the cantilever 201 when moving and to retract into the cantilever 201 rapidly, the adjusting component 8 connected with the gear 405 in a transmission manner is slidably mounted in the housing 3, and a limiting component for limiting the two cantilevers 201 after being attached is arranged between the two cantilevers 201, so that when the two cantilevers 201 are folded, the two folded cantilevers 201 can be fixed through the limiting component.
In this embodiment, the connecting rod 401 drives the housing 3 to move so as to drive the saw blade 11 to move, the connecting rod points to the base 1 in the initial state, the housing 3 is attached to the inner wall of the base 1, the saw blade 11 is located between two cantilevers 201 (as shown in fig. 1), and the cantilevers 201 shield the saw teeth of the saw blade 11 to realize effective protection, so that the whole portable safety is realized; when the housing 3 is attached to the cantilever 201, the saw blade 11 extends from between the cantilevers 201 while the rotation points of the connecting bar 401, the housing 3, and the two bases 1 are on the same horizontal line, and the connecting bar 401 is located in the middle of the bases 1 and the housing 3.
In the present embodiment, it is preferable that: when the saw is used, firstly, based on the two rotating bases 1, the two cantilevers 201 are opened to two sides, in the opening process, the cantilevers 201 drive the connecting rod 401 and the shell 3 to be gradually far away from the bases 1 from a state close to the bases 1, and the shell 3 drives the saw blade 11 to synchronously move when moving; in this process, the angle between the connecting rod 401 and the housing 3 changes, and the angle of the structural fit in the connecting rod assembly 4 changes, so that when the connecting rod 401 is perpendicular to the front surface (rear surface) of the housing 3, the housing 3 can be switched to a state away from the base 1, and at this time, the saw blade 11 has been moved out of the cantilever 201 for a large part.
Then based on the base 1, the two cantilevers 201 are folded towards the middle, the cantilevers 201 drive the connecting rod 401 and the shell 3 to keep away from the base 1 until the connecting rod 401 is vertical to the left side wall of the shell 3, and at the moment, the saw blade 11 is completely moved out from the cantilevers 201; after the two cantilevers 201 are folded, the end part of the cantilever 201 far away from the base 1 is correspondingly clamped with the connecting rod 401, the inner wall of the cantilever 201 is correspondingly clamped with the outer surface of the shell 3 to form an integral structure with a neat and flush surface, then the two folded cantilevers 201 are fixed through the limiting assembly, and the cantilever 201 is held by a hand to move the saw blade 11 back and forth to start sawing work.
The connecting rod folding deformation mechanism is formed by matching the structures of the supporting component 2, the limiting component, the connecting rod component 4, the adjusting component 8 and the like, so that the effective protection of the saw blade 11 can be realized when the saw blade 11 is not used (in a non-working state), and the collision damage of the saw blade 11 is avoided; when the saw blade 11 (working state) is used, the cantilever 201 is matched with the connecting rod 401 and the shell 3, so that a neat and flush integrated structure can be formed, and the operation is comfortable and the hand is not hurt when the hand 203 is matched for cutting and sawing work; meanwhile, the connecting rod folding deformation mechanism is more stable, and the service life is relatively longer. The working state and the non-working state can be easily switched through the opening and closing cantilever 201, the saw blade 11 is not required to be manually pinched to rotate out, the position of the saw blade 11 is not required to be considered when the saw blade 11 is retracted, meanwhile, the two cantilevers 201 do not need to be opened and closed at a large angle, the connecting rod folding deformation mechanism formed by matching is not required, the two cantilevers 201 only need to be opened by about 100 degrees, the user can save more worry and labor, the work load of the user is reduced, and the experience is better. When the cooperation connecting rod folding deformation mechanism switches working condition and non-working condition, need not to manually stir connecting rod 401 when connecting rod 401 is perpendicular with casing 3 surface, promptly when two connecting rods 401 are in relative state, can switch to next state automatically fast, further let the user save worry laborsaving, simultaneously because need not to stir connecting rod 401 with the hand, also avoided the possibility that saw blade 11 damaged the finger, holistic practicality is higher.
Embodiment two:
referring to fig. 1 to 8, based on the first embodiment, the number of the connecting rods 401 is two, the two connecting rods 401 are respectively connected with the two cantilevers 201 in a rotating manner, the end portion of the connecting rod 401 far away from the cantilevers 201 is fixedly provided with the meshing portion 404, and the two meshing portions 404 are connected in a transmission manner, so that synchronous rotation adjustment of the two connecting rods can be realized. The inside fixed mounting of meshing portion 404 has the branch 402 of being connected with casing 3 rotation, and branch 402 sets up in the top of casing 3, and branch 402 extends to casing 3 and fixed cover is established in the inside of gear 405, and in the in-service use branch 402 also can not extend to casing 3 in, and gear 405 is located the top (below) of casing 3 at this moment, but can more occupation space like this, can not realize the maximize utilization of casing 3 interior space. In order to secure stability when the connection rod 401 moves the housing 3, the same strut 402, engagement portion 404, and connection rod 401 are provided below the housing 3. The length of the connecting rod 401 is approximately equal to one half of the length of the cantilever 201, and the point where the connecting rod 401 rotates with the cantilever 201 is also set at the midpoint of the length of the cantilever 201, so that the housing 3 can be engaged with the base 1 when the connecting rod 401 rotates left, and the housing 3 just moves out of the cantilever 201 when the connecting rod 401 rotates right.
In order to facilitate the rapid movement of the connecting rod 401 relative to the cantilever 201, a side plate 406 is fixedly installed at the bottom of the connecting rod 401, a first spring 407 is fixedly installed between the side plate 406 and the front surface (rear surface) of the housing 3, and when the connecting rod 401 rotates based on the support rod 402, the side plate 406 can be driven to rotate and the first spring 407 can be adjusted; the corresponding adjusting component 8 comprises a rack 801 which is in transmission connection with the gear 405 and is in sliding fit with the shell 3, and the rack 801 is arranged between the side plate 406 and the gear 405, so that when the shell 3 can move outside the cantilever 201, the rack 801 can be driven to move towards the direction of the base 1 through the gear 405; meanwhile, the rack 801 and the side plate 406 are made of magnetic materials, and the magnetic poles of the rack 801 and the side plate 406 are opposite. A second spring is fixedly arranged between the surface of the rack 801, which is close to the base 1, and the inner wall of the shell 3, the length of the rack 801 is short, when the rack 801 is driven by the gear 405 to move, the rack 801 is quickly driven to move to a separation state, and the rack 801 can be always meshed with the gear 405 under the action of the second spring, so that the connecting rod 401 drives the gear 405 to rotate in an initial stage (namely, when the connecting rod 401 is not perpendicular to the corresponding surface of the shell 3) through the meshing part 404 and the supporting rod 402, and the rack 801 is already moved from one side of the gear 405 to the other side.
In order to enable smooth rotation between the base 1 and the cantilever 201, the cantilever 201 is provided with a avoiding groove 202 adapted to the base 1. In order to enable the whole surfaces of the two cantilevers 201 to form a flush and integrated type after the cantilevers 201 are folded, the end part of the cantilever 201 far away from the base 1 is provided with a notch 204, the surface of the connecting rod 401 is provided with a slope 403 which is matched with the shape of the notch 204, when the connecting rod 401 is rotated to the right to move the shell 3 out of the cantilever 201, the two cantilevers 201 can be turned into a folded state, at the moment, the notch 204 and the slope 403 are just clamped, the cantilever 201 is connected with the surface of the connecting rod 401 together, no protruding part is provided, the user can hold the cantilever 201 by hand conveniently, and at the moment, the inner wall of the cantilever 201 is kept in fit with the inner wall of the shell 3, so that the whole cantilever 201 is more stable. In order to facilitate the user to hold the cantilever 201, a holding part 203 is provided on the side of the cantilever 201 away from the base 1, and another advantage of this design is that the position of holding the cantilever 201 by hand is closer to the saw blade 11, so that the saw blade 11 can be moved more easily and stably, and the experience is better; and the handshake part 203 and the limiting component are arranged in a staggered manner, so that interference can not occur. In order to avoid that the first spring 407 is deformed greatly after rotating along with the side plate 406, the front surface (rear surface) of the housing 3 is protruded outwards to form a boss 7, and one side of the first spring 407 away from the side plate 406 is fixedly connected with the boss 7, so that the deformation is reduced to prolong the service life of the first spring 407.
In order to realize the laminating of two cantilevers 201 and fix, spacing subassembly includes the arc draw-in groove 5 that runs through in two cantilever 201 bottoms and offers, rotates the buckle 6 of installing with corresponding draw-in groove 5 activity block in the bottom of one of them cantilever 201, and buckle 6 is in the state with one of them draw-in groove 5 block promptly, rotates buckle 6 when two cantilevers 201 close, makes its and another draw-in groove 5 block and then realizes the fixed of two cantilevers 201.
In the present embodiment, it is preferable that: when the device is used, firstly, based on the two rotating bases 1, the two cantilevers 201 are opened to two sides, in the opening process, the cantilevers 201 are matched with the meshing parts 404 and the supporting rods 402, the two connecting rods 401 are driven to gradually change into opposite states from a state of pointing to the bases 1, and the connecting rods 401 drive the shell 3 and the saw blade 11 to synchronously move when moving, so that the shell 3 and the saw blade 11 are gradually far away from the bases 1; in this process, the angle between the connecting rod 401 and the housing 3 changes, the connecting rod 401 gradually extrudes the first spring 407 through the side plate 406, on the other hand, the supporting rod 402 rotates relative to the housing 3, and then drives the rack 801 to move towards the direction of the base 1 through the gear 405, when the front connecting rod 401 (the rear connecting rod 401) is in a vertical state with the front surface (the rear surface) of the housing 3, the rack 801 is matched with the second spring to move to the left side (view angle of fig. 8) of the housing 3, at this moment, the side plate 406 can automatically and rapidly swing towards the left side of the housing 3 under the magnetic adsorption of the rack 801, the housing 3 is driven to switch to a state far away from the base 1, and at this moment, the saw blade 11 is mostly moved out of the cantilever 201.
Then based on the base 1, the two cantilevers 201 are folded towards the middle, the cantilevers 201 are matched with structures such as the meshing part 404, the supporting rods 402 and the like to drive the two connecting rods 401 to gradually point to the saw blade 11 from a relative state, at the moment, the connecting rods 401 drive the shell 3 and specifically keep away from the base 1 until the two connecting rods 401 are perpendicular to the left side wall of the shell 3, and at the same time, the two connecting rods 401 are parallel, at the moment, the saw blade 11 is completely moved out from the space between the cantilevers 201; when the two cantilevers 201 are folded, the end of the front cantilever 201 (the rear cantilever 201) far away from the base 1 is correspondingly clamped with the front connecting rod 401 (the rear connecting rod 401), and the inner wall of the front cantilever 201 is correspondingly clamped with the front surface (the rear surface) of the shell 3, so that an integral structure with a neat and flush surface is formed; then the buckle 6 is rotated to move out of the original clamping groove 5 and is clamped with the clamping groove 5 on the other cantilever 201, so that the fixation of the two folded cantilevers 201 can be realized, finally, the hand is moved to the hand holding part 203 to be held tightly, and the cantilever 201 and the saw blade 11 are moved back and forth to start sawing work.
The connecting rod folding deformation mechanism is formed by the cooperation of the cantilever 201, the connecting rod 401, the rack 801, the shell 3 and other structures, so that the saw blade 11 can be effectively protected when the saw blade 11 is not used (in a non-working state), and the collision damage of the saw blade 11 is avoided; when the saw blade 11 (working state) is used, the cantilever 201 is matched with the connecting rod 401 and the shell 3, so that a neat and flush integrated structure can be formed, and the operation is comfortable and the hand is not hurt when the hand 203 is matched for cutting and sawing. The working state and the non-working state can be easily switched through the opening and closing cantilever 201, the saw blade 11 is not required to be manually pinched to rotate out, the position of the saw blade 11 is not required to be considered when the saw blade 11 is retracted, meanwhile, the two cantilevers 201 do not need to be opened and closed at a large angle, the connecting rod folding deformation mechanism formed by matching is not required, the two cantilevers 201 only need to be opened by about 100 degrees, the user can save more worry and labor, the work load of the user is reduced, and the experience is better. When the matched connecting rod folding deformation mechanism is used for switching the working state and the non-working state, the connecting rod 401 does not need to be manually stirred when the connecting rod 401 is perpendicular to the surface of the shell 3, namely, when the two connecting rods 401 are in the opposite state, the connecting rod can be automatically and quickly switched to the next state, further the user is free from worry and labor, meanwhile, the possibility that the saw blade 11 damages fingers is avoided because the connecting rod 401 does not need to be stirred by hands, and more requirements in actual use are met.
Embodiment III:
referring to fig. 1 to 10, in order to reduce discomfort of dryness and heat caused by a user holding the grip portion 203 for a long time, a plurality of through holes are formed through the cantilever 201 at positions corresponding to the grip portion 203, and the plurality of through holes are horizontally arranged along the grip portion 203, so as to achieve heat dissipation and ventilation effects.
In order to further reduce dryness-heat discomfort, a hose 802 is fixedly arranged at the end part of the rack 801, which is close to the base 1, the end part of the hose 802, which is far away from the rack 801, is flush with the outer surface of the shell 3, meanwhile, the hose 802 and the second spring are in an up-down dislocation state and cannot interfere with each other, and when the rack 801 moves towards the base 1, the hose 802 automatically extends out of the shell 3 and gradually approaches to the position of the handshake part 203; in order to supply air to the hose 802, an air bag 803 is connected to the surface of the hose 802 and the side far away from the gear 405, and the air bag 803 has certain elasticity and can automatically restore to the original state; in order to realize the air supply of the air bag 803 to the hose 802, a ball 804 corresponding to the position of the air bag 803 is slidably mounted in the housing 3, and in order to avoid the adsorption of the rack 801 to the ball 804, the ball 804 is made of a non-metal material. A first chute 9 for horizontally sliding the rack 801 and a second chute 10 for sliding the ball 804 are arranged in the shell 3, and the ball 804 moves in the second chute 10 without interfering with the rack 801.
In order to improve the large-area blowing of hands, the end part of the hose 802, which is far away from the rack 801, is rotatably connected with a flow dividing block 805, and the end part of the flow dividing pipe, which is far away from the hose 802, is provided with a plurality of air outlet holes, and when the rack 801 drives the hose 802 to move, the hose 802 drives the air outlet holes of the flow dividing pipe to be relatively close to the grip part 203. In order to make the shunt tube and the shell 3 be integrated, the contact between the shell 3 and the base 1 is more attractive and not affected, a groove is formed in one side of the shell 3 close to the base 1, the hose 802 extends out of the groove, and the shunt tube is movably arranged in the groove.
In the present embodiment, it is preferable that: when the two cantilevers 201 are opened to two sides, the saw blade 11 is driven to move out from between the two cantilevers 201 by the cooperation of the structures of the connecting rod 401, the supporting rod 402, the housing 3 and the like, and the process is the same as that of the second embodiment, and the repeated description is omitted. In this process, the strut 402 drives the rack 801 to move toward the base 1 through the gear 405, and the connecting rod 401 drives the hose 802, the air bag 803 and the split block 805 to move synchronously, so that the hose 802 moves out of the housing 3, and the split block 805 gradually approaches the handshake 203; when the saw blade 11 is completely moved out from between the two cantilevers 201, the connecting rod 401 is perpendicular to the left side wall of the shell 3, at this time, the supporting rod 402 drives the rack 801 to move to the limit position in the direction of the base 1 through the gear 405, and the rack 801 drives the hose 802 to move synchronously, so that the splitting block 805 is attached to the inner wall of the cantilever 201 corresponding to the grip portion 203, and the air bag 803 is just attached to the inner wall of the shell 3.
When the saw blade 11 is completely moved out and the two cantilevers 201 are fixed through the clamping blocks and the clamping grooves 5, the hand holding part 203 is held to align the saw blade 11 to the position to be cut, and the cantilever 201 and the saw blade 11 are moved back and forth to start the saw cutting work; in the process of moving the cantilever 201 back and forth, the cantilever 201 drives the casing 3 to synchronously move through the connecting rod 401, at this time, the ball 804 in the casing 3 moves in opposite directions with respect to the casing 3 under the action of newton's first law (also called inertia law, which is fully expressed as that any object needs to keep a uniform linear motion or a static state until external force forces it to change a motion state), namely, when the cantilever 201 drives the casing 3 to move forward, the ball 804 moves backward along the second chute 10 with respect to the casing 3, at this time, the ball 804 presses the air bag 803 to supply air to the hose 802, and the hose 802 discharges air from the handshake part 203 through the split block 805, the air outlet and the through hole to blow the hand of the user; when the cantilever 201 drives the housing 3 to move rightward, the ball 804 moves forward along the second chute 10 relative to the housing 3, at this time, the ball 804 is separated from the air bag 803, the air bag 803 automatically returns to its original shape under the elastic action, and air is sucked from the through hole to the air outlet, the split block 805 and the hose 802, and the air passes through the gaps between the fingers to complete the replenishment.
In the second embodiment, although the link folding deformation mechanism is formed to realize the rapid switching between the working state and the non-working state, when the hand 203 is held for a long time to perform the sawing operation, the discomfort of dryness heat will be generated in the palm, at this time, the palm needs to be released for one time, and then the hand 203 is held again to continue sawing, so that a certain limitation of use exists. Compared with the second embodiment, through the cooperation of the structures such as the rack 801, the hose 802, the air bag 803, the ball 804 and the like, when the hand holding hand 203 drives the cantilever 201 and the saw blade 11 to move back and forth to perform sawing work, the ball 804 can also be driven to move reversely relative to the shell 3, and at the moment, the ball 804 can automatically approach or depart from the air bag 803; the air bag 803 can be extruded when the air bag 803 is contacted with the air bag 803, the air bag 803 automatically supplements air when the air bag 803 is separated from the air bag 803, the air bag further dissipates heat to the palm through the leaked air bag, the palm is adsorbed through the closed air hole, so that a user can better grasp the hand 203, the experience feeling during use is improved, the user does not need to loosen the hand for multiple times to move the palm, and further the working efficiency is relatively improved; the overall motion is combined with the movement of the rack 801 and the movement of the saw blade 11, so that the applicability is higher.
Claims (5)
1. The portable safe hand saw comprises a saw blade and two bases which are in rotary connection, and is characterized in that the end parts, far away from a rotary point, of the bases are rotationally connected with a supporting component, the supporting component comprises cantilevers which are rotationally connected with the bases, connecting rod components are installed in the two cantilevers in a common rotation mode through rotating shafts, the connecting rod components comprise connecting rods and gears, a shell fixedly connected with the saw blade is arranged on one side, far away from the cantilevers, of each connecting rod, an adjusting component connected with a gear transmission is installed in the shell in a sliding mode, and a limiting component for limiting after the two cantilevers are attached is jointly arranged between the two cantilevers; when the shell is attached to the base, the saw blade is positioned between the two cantilevers, and when the shell is attached to the cantilevers, the saw blade extends out from between the two cantilevers;
the number of the connecting rods is two, the two connecting rods are respectively connected with the two cantilevers in a rotating way, the end parts of the connecting rods, which are far away from the cantilevers, are fixedly provided with meshing parts, and the two meshing parts are in transmission connection; the meshing part is internally and fixedly provided with a supporting rod which is rotationally connected with the shell, and the gear is positioned in the shell and fixedly sleeved outside the supporting rod;
a side plate is fixedly arranged on the surface of the connecting rod, and a first spring is fixedly arranged between the side plate and the shell;
the adjusting component comprises a rack which is connected with the gear in a transmission way and is in sliding fit with the shell, the rack is arranged between the side plate and the corresponding gear, a second spring is fixedly arranged between the rack and the inner wall of the shell, the rack and the side plate are both made of magnetic materials, and the magnetic poles of the rack and the side plate are opposite;
the cantilever is U-shaped, a notch is formed in the end part of the cantilever far away from the base, and a slope matched with the notch in shape is formed in the surface of the connecting rod; when the shell is attached to the cantilever, the notch is clamped with the slope;
the limiting assembly comprises arc-shaped clamping grooves which are formed in the bottoms of the two cantilevers in a penetrating mode, and a buckle movably clamped with the corresponding clamping groove is rotatably installed at the bottom of one cantilever.
2. The portable safety hand saw of claim 1, wherein the length of the connecting rod is equal to one half of the length of the cantilever, and the connecting rod coincides with a midpoint of the length of the cantilever based on a rotation point of the cantilever.
3. The portable safety hand saw according to claim 1, wherein the surface of the housing is outwardly protruded to form a boss, and both ends of the first spring are fixedly connected to the side plate and the boss, respectively.
4. A portable safety hand saw according to any one of claims 1 to 3, wherein the cantilever is provided with a grip portion on a side thereof remote from the base, the grip portion being offset from the limit assembly.
5. The portable safety hand saw of claim 4, wherein the cantilever has a plurality of through holes extending therethrough at positions corresponding to the grip portions, the plurality of through holes being horizontally disposed along the grip portions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210786389.1A CN115088584B (en) | 2022-07-04 | 2022-07-04 | Portable safe hand saw |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210786389.1A CN115088584B (en) | 2022-07-04 | 2022-07-04 | Portable safe hand saw |
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| Publication Number | Publication Date |
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| CN115088584A CN115088584A (en) | 2022-09-23 |
| CN115088584B true CN115088584B (en) | 2024-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210786389.1A Active CN115088584B (en) | 2022-07-04 | 2022-07-04 | Portable safe hand saw |
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| CN (1) | CN115088584B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3025398U (en) * | 1995-12-01 | 1996-06-11 | 許 安生 | Folding saw |
| CN202324931U (en) * | 2011-11-30 | 2012-07-11 | 广东澳利坚建筑五金有限公司 | Slide supporting hinge for casement window |
| CN203360884U (en) * | 2013-06-26 | 2013-12-25 | 上海大学 | Outdoor cantilever telescopic clothes hanger |
| CN109079238A (en) * | 2018-10-12 | 2018-12-25 | 海联锯业科技有限公司 | A kind of saw blade telescopic type Hand saw |
| CN211162180U (en) * | 2019-12-03 | 2020-08-04 | 江苏泽众智能科技有限公司 | Portable folding hand saw |
-
2022
- 2022-07-04 CN CN202210786389.1A patent/CN115088584B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3025398U (en) * | 1995-12-01 | 1996-06-11 | 許 安生 | Folding saw |
| CN202324931U (en) * | 2011-11-30 | 2012-07-11 | 广东澳利坚建筑五金有限公司 | Slide supporting hinge for casement window |
| CN203360884U (en) * | 2013-06-26 | 2013-12-25 | 上海大学 | Outdoor cantilever telescopic clothes hanger |
| CN109079238A (en) * | 2018-10-12 | 2018-12-25 | 海联锯业科技有限公司 | A kind of saw blade telescopic type Hand saw |
| CN211162180U (en) * | 2019-12-03 | 2020-08-04 | 江苏泽众智能科技有限公司 | Portable folding hand saw |
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| Publication number | Publication date |
|---|---|
| CN115088584A (en) | 2022-09-23 |
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