CN114789420A - Screwdriver with adjustable torque - Google Patents
Screwdriver with adjustable torque Download PDFInfo
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- CN114789420A CN114789420A CN202210606146.5A CN202210606146A CN114789420A CN 114789420 A CN114789420 A CN 114789420A CN 202210606146 A CN202210606146 A CN 202210606146A CN 114789420 A CN114789420 A CN 114789420A
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- pressing block
- block
- screwdriver
- main body
- rotating shaft
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- 238000003825 pressing Methods 0.000 claims abstract description 81
- 230000020347 spindle assembly Effects 0.000 claims description 10
- 238000005520 cutting process Methods 0.000 claims description 9
- 230000000712 assembly Effects 0.000 claims description 6
- 238000000429 assembly Methods 0.000 claims description 6
- 238000013459 approach Methods 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B15/00—Screwdrivers
- B25B15/02—Screwdrivers operated by rotating the handle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
- B25B23/142—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The application discloses a torque-adjustable screwdriver which comprises a handle seat, a base, a central rotating shaft assembly, a pressing block assembly and an adjusting block, wherein the base is arranged on the handle seat; the pressing block assembly comprises a main body, a pressing block and an elastic piece, the pressing block is movably arranged on the main body, the pressing block is used for moving along the radial direction of the central rotating shaft assembly, the elastic piece is arranged between the pressing block and the main body, and the elastic piece is used for providing elasticity for the main body so that the main body has a trend close to the central rotating shaft assembly; the base is rotationally located to the regulating block, and simultaneously, regulating block and briquetting cooperation, the regulating block is used for rotating around the axis of central pivot subassembly to adjust the elasticity of elastic component. Above-mentioned adjustable moment of torsion screwdriver can realize the lock and attach the regulation of moment of torsion size, and convenient to use and cost are cheap, need not to use electric drive, do not receive service environment influence, and the convenience is higher to can avoid the risk of electric leakage electric shock.
Description
Technical Field
The application relates to the technical field of screwdrivers, in particular to a torque-adjustable screwdriver.
Background
In the prior art, when a server and a computer PC are manually assembled, produced and repaired in a fault, a screwdriver needs to be used for locking and attaching screws to fix all parts, and because the locking and attaching processes of all parts have the requirement of locking and attaching torque, an electric screwdriver with a torque adjusting function is generally used for operation in production, however, the electric screwdriver has the following defects: firstly, the electric screwdriver is expensive, the fault maintenance cost is high, and the production input cost is increased; secondly, the device has limitation to the use environment, can work only by accessing a power supply, has limited application environment and poor convenience. Therefore, there is a need for a torque-adjustable screwdriver that is easy to use and low in cost.
Disclosure of Invention
The utility model aims at providing an adjustable torque screwdriver can realize the regulation of lock and attach the moment of torsion size, and can select corresponding mode according to the in service behavior, convenient to use and with low costs.
In order to achieve the above object, the present application provides an adjustable torque screwdriver,
a handle seat;
the base is arranged on the handle seat;
the central rotating shaft assembly is arranged on the base and used for locking and attaching a connecting piece;
briquetting subassembly, movably locates the base is used for the butt center pivot subassembly makes the handle seat drives center pivot subassembly rotates, includes:
the main body is contacted and propped against the central rotating shaft component;
the pressing block is movably arranged on the main body and is used for moving along the radial direction of the central rotating shaft component;
the elastic piece is arranged between the pressing block and the main body and used for providing elastic force for the main body so that the main body has a tendency of approaching the central rotating shaft assembly;
the adjusting block is rotatably arranged on the base, is matched with the pressing block and is used for rotating around the axis of the central rotating shaft assembly so as to adjust the elasticity of the elastic piece.
In some embodiments, the base is provided with a sliding groove, the adjusting block comprises an arc-shaped body and a pushing block, the pushing block is arranged on the arc-shaped body, and the arc-shaped body slides along the sliding groove by pushing the pushing block.
In some embodiments, the arc-shaped body is provided with an arc-shaped groove, the pressing block is arranged in the arc-shaped groove, and the pressing block slides along the arc-shaped groove by pushing the pushing block so as to adjust the elastic force of the elastic member.
In some embodiments, the base is further provided with a mounting groove, the pressing block assembly is arranged in the mounting groove, the mounting groove is communicated with the arc-shaped groove through a notch, and the notch is used for accommodating the pressing block.
In some embodiments, the handle seat is provided with:
a first internal cavity for mounting the central spindle assembly;
the groove is arranged in the first inner cavity and used for accommodating the adjusting block;
the base is provided with a second inner cavity, and the first inner cavity and the second inner cavity form a space for mounting the central rotating shaft assembly.
In some embodiments, the handle base further comprises a housing cover, the housing cover is connected to the handle seat, the housing cover is provided with an accommodating cavity, the accommodating cavity is used for accommodating the base, the housing cover is provided with a sliding hole and a fixing hole, the adjusting block extends out of the sliding hole, the fixing hole is located on one side of the sliding hole, and the fixing hole is used for arranging a fixing piece to fix the adjusting block.
In some embodiments, the pressing block assembly further includes a guide post disposed in the main body, and the pressing block and the elastic member are both sleeved on the guide post.
In some embodiments, the central shaft assembly includes a central shaft and a serrated wheel, and the body is provided with teeth that mesh with the serrated wheel.
In some embodiments, the number of the adjusting blocks, the number of the pressing block assemblies and the number of the sawtooth wheels are two, the two adjusting blocks are respectively matched with the two pressing block assemblies, one of the adjusting blocks rotates clockwise to increase the elastic force of the elastic member corresponding to the adjusting block, and the other adjusting block rotates counterclockwise to increase the elastic force of the elastic member corresponding to the adjusting block.
In some embodiments, the central shaft is provided with a detachable tool bit, the detachable tool bit is provided with an outer hexagonal prism structure, the central shaft is provided with an inner hexagonal groove structure, and the outer hexagonal prism structure is matched with the inner hexagonal groove structure to realize that the detachable tool bit is connected to the central rotating shaft assembly.
Compared with the prior art, the adjustable-torque screwdriver provided by the embodiment of the application comprises a handle seat, a base, a central rotating shaft assembly, a pressing block assembly and an adjusting block, wherein the base is arranged on the handle seat, the central rotating shaft assembly is arranged on the base, the central rotating shaft assembly is used for locking and attaching a connecting piece, the pressing block assembly is movably arranged on the base and is used for abutting against the central rotating shaft assembly, and thus the central rotating shaft assembly can be driven to rotate by operating the handle seat; furthermore, the pressing block assembly comprises a main body, a pressing block and an elastic piece, the main body is in contact with and abuts against the central rotating shaft assembly, the pressing block is movably arranged on the main body, the pressing block is used for moving along the radial direction of the central rotating shaft assembly, the elastic piece is arranged between the pressing block and the main body, and the elastic piece is used for providing elastic force for the main body, so that the main body has a tendency of being close to the central rotating shaft assembly; the base is rotationally located to the regulating block, and simultaneously, regulating block and briquetting cooperation, regulating block are used for rotating around the axis of central pivot subassembly to adjust the elasticity of elastic component. Therefore, when torsion needs to be adjusted, the adjusting block is rotated around the axis of the central rotating shaft assembly, the adjusting block drives the pressing block to move along the radial direction of the central rotating shaft assembly, so that the elastic piece provides elastic force for the main body, the elastic deformation amount of the elastic piece can be adjusted, the matching tightness of the main body and the central rotating shaft assembly can be controlled, the friction force between the main body and the central rotating shaft assembly is converted into the torque force of the central rotating shaft assembly, and the central rotating shaft assembly is driven to rotate so as to lock the connecting piece. After the torque force is adjusted to meet the process requirement range, the screwdriver is aligned to the connecting piece (screw), the handle seat is rotated until the central rotating shaft assembly slips and makes a 'clicking' sound, the screwdriver stops rotating, and the locking is completed. Compare in traditional screwdriver, the adjustable torque screwdriver that this application embodiment provided can realize the lock and attach the regulation of moment of torsion size, and convenient to use and cost are cheap, can greatly reduce production input cost, meanwhile, need not to use electric drive, do not receive service environment influence, and application range is extensive, and the convenience is higher to can avoid the risk of electric leakage electric shock.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only the embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic view of an overall structure of an adjustable torque screwdriver in an embodiment of the present application;
FIG. 2 is a schematic view of the adjustable torque screwdriver shown in FIG. 1 with a cover removed;
FIG. 3 is an assembly schematic view of the central spindle assembly, the pressure block assembly and the adjustment block of the adjustable torque screwdriver of FIG. 2;
FIG. 4 is an assembly view of the central rotating shaft assembly, the pressing block assembly and the adjusting block at another angle;
FIG. 5 is an enlarged schematic view of the assembly of the central spindle assembly, the pressure block assembly and the adjustment block;
FIG. 6 is a schematic structural diagram of the adjusting block in FIG. 5;
FIG. 7 is a schematic structural view of the press block assembly of FIG. 5;
FIG. 8 is a schematic view of another angle of the pressing block assembly;
FIG. 9 is a schematic view of a handle mount of the adjustable torque screwdriver of FIG. 1;
FIG. 10 is a schematic view of a housing cover of the adjustable torque screwdriver of FIG. 1;
FIG. 11 is a schematic view of the cover shown in FIG. 10 at another angle;
fig. 12 is a schematic view of a central spindle assembly of the adjustable torque screwdriver of fig. 1;
FIG. 13 is a schematic view of a removable bit of the adjustable torque screwdriver of FIG. 1;
FIG. 14 is a schematic view of the base of the adjustable torque screwdriver of FIG. 2;
fig. 15 is a schematic view of the base shown in fig. 14 at another angle.
Wherein:
1-handle seat, 11-first inner cavity and 12-groove;
2-a base, 21-a second inner cavity, 22-a sliding groove, 23-a mounting groove and 24-a notch;
3-central rotating shaft component, 31-central shaft, 311-inner hexagonal groove structure, 32-sawtooth wheel, 33-detachable cutter head, 331-outer hexagonal column structure and 34-lining;
4-a pressing block component, 41-a main body, 411-a tooth, 42-a pressing block, 43-an elastic component and 44-a guide column;
5-adjusting block, 51-pushing block, 52-arc body and 521-arc groove;
6-shell cover, 61-containing cavity, 62-slide hole and 63-fixing hole.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The core of the application is to provide an adjustable torque screwdriver, which can realize the adjustment of the locking torque, select a corresponding working mode according to the use condition, and has convenient use and low cost.
In order to better understand the technical scheme of the present application, the following detailed description is provided for the person skilled in the art with reference to the accompanying drawings and the detailed description.
It should be noted that the following directional terms such as "upper end, lower end, left side, right side" and the like are defined based on the drawings of the specification.
Referring to fig. 1 to 15, fig. 1 is a schematic view illustrating an overall structure of a torque adjustable screwdriver according to an embodiment of the present invention; FIG. 2 is a schematic view of the torque-adjustable screwdriver shown in FIG. 1 with a cover removed; FIG. 3 is an assembly schematic view of the central spindle assembly, the pressing block assembly and the adjustment block of the adjustable torque screwdriver of FIG. 2; FIG. 4 is an assembly view of the central rotating shaft assembly, the pressing block assembly and the adjusting block at another angle; FIG. 5 is an enlarged schematic view of the assembly of the central spindle assembly, the pressure block assembly and the adjustment block; FIG. 6 is a schematic structural diagram of the adjusting block in FIG. 5; FIG. 7 is a schematic structural view of the press block assembly of FIG. 5; FIG. 8 is a schematic view of another angle of the pressing block assembly; FIG. 9 is a schematic view of a handle mount of the adjustable torque screwdriver of FIG. 1; FIG. 10 is a schematic view of a housing cover of the adjustable torque screwdriver of FIG. 1; FIG. 11 is a schematic view of the cover shown in FIG. 10 at another angle; fig. 12 is a schematic view of the central spindle assembly of the adjustable torque screwdriver of fig. 1; FIG. 13 is a schematic view of a removable bit of the adjustable torque screwdriver of FIG. 1; FIG. 14 is a schematic view of the base of the adjustable torque screwdriver of FIG. 2; fig. 15 is a schematic view of the base shown in fig. 14 at another angle.
The torque-adjustable screwdriver provided by the embodiment of the application comprises a handle seat 1, a base 2, a central rotating shaft assembly 3, a pressing block assembly 4 and an adjusting block 5, wherein the handle seat 1 is used as a main body seat of the screwdriver, the base 2 is arranged on the handle seat 1, the central rotating shaft assembly 3 is arranged on the base 2, the central rotating shaft assembly 3 is used for locking and attaching a connecting piece, the pressing block assembly 4 is movably arranged on the base 2, and the pressing block assembly 4 is used for abutting against the central rotating shaft assembly 3, so that the central rotating shaft assembly 3 can be driven to rotate by operating the handle seat 1; furthermore, the pressing block assembly 4 includes a main body 41, a pressing block 42 and an elastic member 43, the main body 41 contacts and presses against the central rotating shaft assembly 3, the pressing block 42 is movably disposed on the main body 41, the pressing block 42 is used for moving along the radial direction of the central rotating shaft assembly 3, the elastic member 43 is disposed between the pressing block 42 and the main body 41, and the elastic member 43 is used for providing elastic force to the main body 41, so that the main body 41 tends to approach the central rotating shaft assembly 3; the adjusting block 5 is rotatably arranged on the base 2, meanwhile, the adjusting block 5 is matched with the pressing block 42, and the adjusting block 5 is used for rotating around the axis of the central rotating shaft component 3 so as to adjust the elasticity of the elastic component 43.
Thus, when torque needs to be adjusted, the adjusting block 5 rotates around the axis of the central rotating shaft assembly 3, the adjusting block 5 drives the pressing block 42 to move along the radial direction of the central rotating shaft assembly 3, so that the elastic piece 43 provides elastic force to the main body 41, and thus, the elastic deformation amount of the elastic piece 43 can be adjusted to control the tightness of the main body 41 matched with the central rotating shaft assembly 3, and the friction force between the main body 41 and the central rotating shaft assembly 3 is converted into the torque force of the central rotating shaft assembly 3 to drive the central rotating shaft assembly 3 to rotate so as to lock the connecting piece.
After the torque force is adjusted to meet the process requirement range, the screwdriver is aligned to the connecting piece (screw), the handle seat 1 is rotated until the central rotating shaft component 3 slips and makes a sound of 'Da', the screwdriver stops rotating, and the locking is completed.
Compare in traditional screwdriver, the adjustable torque screwdriver that this application embodiment provided can realize the lock and attach the regulation of moment of torsion size, and convenient to use and cost are cheap, can greatly reduce production input cost, meanwhile, need not to use electric drive, do not receive service environment influence, and application range is extensive, and the convenience is higher to can avoid the risk of electric leakage electric shock.
In some embodiments, in order to facilitate the rotation of the adjusting block 5 relative to the base 2, the base 2 is provided with a sliding groove 22, the adjusting block 5 is matched with the sliding groove 22, specifically, the adjusting block 5 includes an arc-shaped body 52 and a pushing block 51, the pushing block 51 is arranged on the arc-shaped body 52, the pushing block 51 is arranged to facilitate the manual operation to drive the adjusting block 5, the arc-shaped body 52 is arranged in the sliding groove 22, and the pushing block 51 is pushed to enable the arc-shaped body 52 to slide along the sliding groove 22.
In some embodiments, in order to facilitate the adjustment block 5 to cooperate with the pressing block 42, the arc-shaped body 52 is provided with an arc-shaped slot 521, and the pressing block 42 is disposed in the arc-shaped slot 521, so that the pressing block 42 slides along the arc-shaped slot 521 by pushing the pushing block 51 to adjust the elastic force of the elastic member 43.
Specifically, the distance between the arc-shaped groove 521 and the center of the arc-shaped body 52 is gradually reduced or enlarged from one end to the other end along the length direction of the arc-shaped groove 521, the pressing block 42 is arranged in the arc-shaped groove 521, and when the pressing block 42 is located at the position (top end position) where the arc-shaped groove 521 is farthest from the center of the arc-shaped body 52, the pressing block 42 drives the whole pressing block assembly 4 to move upwards to the limit position, so that the main body 41 is separated from the contact with the central rotating shaft assembly 3, and the central rotating shaft assembly 3 cannot interfere with the main body 41; when the pressing block 42 is located at the position (bottom position) where the arc-shaped groove 521 is closest to the center of the arc-shaped body 52, the main body 41 is most subjected to the elastic force, and the pressing block 42 drives the entire pressing block assembly 4 to move down to the limit position, at this time, the main body 41 is most closely contacted with the central rotating shaft assembly 3.
In some embodiments, in order to facilitate assembling the pressing block assembly 4, the base 2 is further provided with a mounting groove 23, the pressing block assembly 4 is disposed in the mounting groove 23, the mounting groove 23 is adapted to the pressing block assembly 4, the mounting groove 23 is communicated with the arc-shaped groove 521 through a notch 24, the notch 24 is used for accommodating the pressing block 42, and the height of the notch 24 should be greater than that of the pressing block 42.
It can be understood that, when the adjusting block 5 and the pressing block assembly 4 are installed, the adjusting block 5 is embedded in the sliding groove 22 of the base 2 for fixing and limiting, and the pressing block assembly 4 is embedded in the installation groove 23 of the base 2 for fixing and limiting.
In some embodiments, the handle seat 1 is provided with a first inner cavity 11 and a groove 12, wherein the first inner cavity 11 is provided at the lower part of the handle seat 1, and the first inner cavity 11 is used for installing the central rotating shaft assembly 3; the groove 12 is arranged in the middle of the first inner cavity 11, the groove 12 is used for accommodating the adjusting block 5, and the groove 12 is used as a rotating space of the adjusting block 5; correspondingly, the base 2 is provided with a second inner cavity 21, and the first inner cavity 11 and the second inner cavity 21 jointly form a space for installing the central rotating shaft component 3.
Meanwhile, eight screw hole sites are arranged on the handle seat 1, wherein four screw hole sites positioned at the top and the bottom are used for fixing the shell cover 6, and the other four screw hole sites are used for fixing the base 2.
In addition, the screwdriver with the adjustable torque further comprises a shell cover 6, the shell cover 6 is connected to the handle seat 1, and the shell cover 6 serves as an outer protective shell of the screwdriver inner part; the housing cover 6 is provided with a containing cavity 61, the containing cavity 61 is used for containing the base 2, a sliding hole 62 is formed in the housing cover 6, and the adjusting block 5 extends out of the sliding hole 62 so as to operate the adjusting block 5 to slide.
It should be noted that, one side that is located slide opening 62 on the cap 6 is equipped with fixed orifices 63 (screw hole), when adjusting block 5 turned to preset position and reached the moment of torsion, through setting up mounting (screw) in fixing orifices 63, the tight adjusting block 5 in mounting top to reach the purpose of fixed adjusting block 5.
In some embodiments, in order to guide the movement of the pressing block 42, the pressing block assembly 4 further includes a guide post 44, the guide post 44 is disposed in the main body 41, the guide post 44 is perpendicular to the axis of the central rotating shaft assembly 3, the pressing block 42 and the elastic member 43 are both disposed on the guide post 44, and the pressing block 42 extends out of the main body 41.
Of course, according to actual requirements, the elastic member 43 is embodied as a spring, and when the pressing piece 42 moves downward, the spring compresses and provides an elastic force to the main body 41.
In some embodiments, the central shaft assembly 3 comprises a central shaft 31 and a serrated wheel 32, and the body 41 is provided with teeth 411, the teeth 411 engaging with the serrated wheel 32. In addition, a bushing 34 is further disposed on the central shaft 31, and the bushing 34 is used for wear protection and limit compensation of the central shaft 31.
Therefore, the guide post 44 can be used to limit the spring and the pressing block 42 to move only along the axial direction of the guide post 44, the pressing block 42 can move along the axial direction of the guide post 44 under the guiding action of the guide post 44 to adjust the compression amount of the spring, meanwhile, the pressing block 42 is matched with the arc-shaped groove 521 of the adjusting block 5, the pressing block 42 is driven by the arc-shaped groove 521 to change the position along with the sliding of the adjusting block 5, so as to change the compression amount of the spring, and when the spring is compressed, the spring always acts on the main body 41 and provides elastic pressure for the main body 41.
In some embodiments, the central shaft 31 is provided with a detachable cutting head 33 (screwdriver head), the detachable cutting head 33 is provided with an outer hexagonal cylindrical structure 331, the central shaft 31 is provided with an inner hexagonal groove structure 311, and the outer hexagonal cylindrical structure 331 cooperates with the inner hexagonal groove structure 311 to realize the connection of the detachable cutting head 33 to the central spindle assembly 3. The upper portion of the detachable cutting head 33 is an outer hexagonal-cylindrical structure 331 and the lower portion is a cutting edge which is designed to correspond to a cutting edge according to the type of screw.
Specifically, two sawtooth wheels 32 with opposite teeth 411 are designed on the central shaft 31, the two sawtooth wheels 32 are arranged at intervals along the axial direction of the central shaft 31, and the sawtooth wheels 32 are meshed and matched with the teeth 411 on the main body 41 of the press block assembly 4; the lower end surface of the central shaft 31 is provided with an inner hexagonal groove 12 for the insertion of a detachable cutter head 33.
Screwdriver head and center pin 31 are embedding connection structure, can change the screwdriver head of different shapes according to the screw type, and the suitability is high, and it is convenient to change, can solve the trouble that appears changing between the different screw types in the production process.
In some embodiments, the number of the adjusting blocks 5 and the number of the pressing block assemblies 4 are two, and the two adjusting blocks 5 are respectively matched with the two pressing block assemblies 4, wherein one adjusting block 5 (the upper adjusting block 5) rotates clockwise to increase the elastic force of the elastic member 43 corresponding to the adjusting block, and the other adjusting block 5 (the lower adjusting block 5) rotates counterclockwise to increase the elastic force of the elastic member 43 corresponding to the adjusting block.
In practical operation, firstly, the corresponding detachable cutter head 33 is selected according to the type of the screw to be embedded into the hexagonal socket 12 on the end face of the central shaft 31; then, selecting an adjusting block 5 for adjusting the torque corresponding to the direction according to the locking direction of the screw, sliding the adjusting block 5 to adjust the torque, and calibrating the torque by using a torsion meter until the torque meets the torque range of the process requirement; finally, the screwdriver head is aligned with the screw cap, the handle seat 1 is rotated until the central shaft 31 of the screwdriver slips and makes a 'click' sound, the rotation of the screwdriver is stopped, and the locking is completed.
It should be noted that the torque-adjustable screwdriver provided by the embodiment of the application can realize switching of 3 working modes, and has strong functional practicability. Specifically, the screwdriver can support the adjustment of the locking torque in the positive direction (clockwise direction) and the reverse direction (counterclockwise direction), the two adjusting blocks 5 respectively correspond to the adjustment of the locking torque in the positive direction and the reverse direction, and the corresponding adjusting block 5 is selected to slide according to the locking direction of the screw to adjust the torque.
A first mode of operation: when the screw is required to be locked in the positive direction and the locking torque requirement exists, the upper adjusting block is slid to adjust the torque range required by the process, the lower adjusting block is slid to the initial position (the spring corresponding to the adjusting block 5 in the position does not provide elasticity), the screwdriver head is aligned to the clamping screw cap, the screwdriver is rotated in the positive direction until the screwdriver makes a 'Da' sound, the rotation is stopped, and the locking is completed; a second mode of operation: when the screw needs to be locked in the reverse direction and the locking torque requirement exists, the lower adjusting block is slid to adjust the torque range required by the process, the upper adjusting block is slid to the initial position (the spring corresponding to the adjusting block 5 in the position does not provide elasticity), the screwdriver head is aligned with the clamped screw cap, the screwdriver is rotated in the reverse direction until the screwdriver generates the 'click' sound, the rotation is stopped, and the locking is completed; the third mode of operation: when the locking has no torque requirement, the upper adjusting block and the lower adjusting block are slid to the tail end position (the elasticity provided by the spring corresponding to the adjusting block 5 at the position reaches the maximum value), the screwdriver head is aligned to the clamping screw cap, the central shaft 31 is clamped and can not rotate relatively, the screwdriver is rotated according to the required locking direction until the screw is locked, and the locking is completed.
To sum up, the torque adjustable screwdriver provided in the embodiments of the present application realizes that the torque adjustable manner is: the central shaft 31 is provided with a sawtooth wheel 32, a main body 41 of the press block component 4 is provided with teeth 411 which are meshed with the sawtooth wheel 32 at a position corresponding to the sawtooth wheel 32, the compression amount of a spring in the press block component 4 is adjusted through an adjusting block 5, the meshing tightness between the teeth 411 of the press block component 4 and the sawtooth wheel 32 is controlled, the friction force between the teeth 411 and the sawtooth wheel 32 is converted into the torque force of the central shaft 31 to drive the central shaft 31 to rotate and lock a screw, when the torque of the central shaft 31 is greater than the friction force of the teeth 411 of the press block component 4 acting on the sawtooth wheel 32, the teeth 411 of the press block component 42 are jacked up to be disengaged, and slip with the sawtooth wheel 32 and make a ' clicking ' sound ', and therefore the torque can be adjusted by adjusting the compression amount of the spring.
It should be noted that in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
The adjustable torque screwdriver provided by the application is described in detail above. The principle and the implementation of the present application are explained herein by using specific examples, and the above descriptions of the examples are only used to help understand the scheme and the core idea of the present application. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.
Claims (10)
1. An adjustable torque screwdriver, comprising:
a handle seat (1);
the base (2) is arranged on the handle seat (1);
the central rotating shaft assembly (3) is arranged on the base (2) and used for locking and attaching a connecting piece;
briquetting subassembly (4), movably locates base (2), be used for the butt center pivot subassembly (3), make handle seat (1) drives center pivot subassembly (3) rotates, includes:
a main body (41) which is contacted and propped against the central rotating shaft component (3);
the pressing block (42) is movably arranged on the main body (41) and is used for moving along the radial direction of the central rotating shaft component (3);
an elastic member (43) provided between the pressing block (42) and the main body (41) for providing an elastic force to the main body (41) so that the main body (41) has a tendency to approach the central rotating shaft assembly (3);
and the adjusting block (5) is rotatably arranged on the base (2), is matched with the pressing block (42) and is used for rotating around the axis of the central rotating shaft assembly (3) so as to adjust the elasticity of the elastic piece (43).
2. The screwdriver with adjustable torque according to claim 1, wherein the base (2) is provided with a sliding slot (22), the adjusting block (5) comprises an arc-shaped body (52) and a pushing block (51), the pushing block (51) is arranged on the arc-shaped body (52), and the arc-shaped body (52) slides along the sliding slot (22) by pushing the pushing block (51).
3. The screwdriver with adjustable torque according to claim 2, wherein the arc-shaped body (52) is provided with an arc-shaped slot (521), the pressing block (42) is arranged in the arc-shaped slot (521), and the pressing block (42) slides along the arc-shaped slot (521) by pushing the pushing block (51) so as to adjust the elastic force of the elastic member (43).
4. The screwdriver with adjustable torque according to claim 2, wherein the base (2) is further provided with a mounting groove (23), the pressing block assembly (4) is arranged in the mounting groove (23), the mounting groove (23) is communicated with the arc-shaped groove (521) through a notch (24), and the notch (24) is used for accommodating the pressing block (42).
5. Screwdriver according to claim 1, characterised in that said handle seat (1) is provided with:
a first internal cavity (11) for mounting the central spindle assembly (3);
the groove (12) is arranged in the first inner cavity (11) and is used for accommodating the adjusting block (5);
the base (2) is provided with a second inner cavity (21), and the first inner cavity (11) and the second inner cavity (21) form a space for mounting the central rotating shaft assembly (3).
6. The torque-adjustable screwdriver according to claim 1, further comprising a housing cover (6), wherein the housing cover (6) is connected to the handle seat (1), the housing cover (6) is provided with an accommodating cavity (61), the accommodating cavity (61) is used for accommodating the base (2), a sliding hole (62) and a fixing hole (63) are formed in the housing cover (6), the adjusting block (5) extends out of the sliding hole (62), the fixing hole (63) is located on one side of the sliding hole (62), and the fixing hole (63) is used for arranging a fixing member to fix the adjusting block (5).
7. The screwdriver with adjustable torque as claimed in claim 1, wherein the pressing block assembly (4) further comprises a guide post (44), the guide post (44) is disposed in the main body (41), and the pressing block (42) and the elastic member (43) are both sleeved on the guide post (44).
8. Screwdriver according to any one of claims 1 to 7, characterised in that said central spindle assembly (3) comprises a central shaft (31) and a toothed wheel (32), said body (41) being provided with teeth (411), said teeth (411) being engaged with said toothed wheel (32).
9. The screwdriver according to claim 8, characterized in that the number of said adjusting blocks (5), said pressing block assemblies (4) and said toothed wheel (32) is two, two adjusting blocks (5) being respectively engaged with two pressing block assemblies (4); one of the adjusting blocks (5) rotates in the clockwise direction to increase the elastic force of the elastic piece (43) corresponding to the adjusting block, and the other adjusting block (5) rotates in the counterclockwise direction to increase the elastic force of the elastic piece (43) corresponding to the adjusting block.
10. Screwdriver according to claim 8, wherein said central shaft (31) is provided with a detachable cutting head (33), said detachable cutting head (33) being provided with an outer hexagonal cylindrical structure (331), said central shaft (31) being provided with an inner hexagonal recess structure (311), said outer hexagonal cylindrical structure (331) cooperating with said inner hexagonal recess structure (311) for enabling said detachable cutting head (33) to be attached to said central shaft assembly (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210606146.5A CN114789420B (en) | 2022-05-31 | 2022-05-31 | Screw driver with adjustable torque |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210606146.5A CN114789420B (en) | 2022-05-31 | 2022-05-31 | Screw driver with adjustable torque |
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| Publication Number | Publication Date |
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| CN114789420A true CN114789420A (en) | 2022-07-26 |
| CN114789420B CN114789420B (en) | 2024-03-26 |
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| CN202210606146.5A Active CN114789420B (en) | 2022-05-31 | 2022-05-31 | Screw driver with adjustable torque |
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|---|---|
| CN114789420B (en) | 2024-03-26 |
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