CN114789420B - Screw driver with adjustable torque - Google Patents
Screw driver with adjustable torque Download PDFInfo
- Publication number
- CN114789420B CN114789420B CN202210606146.5A CN202210606146A CN114789420B CN 114789420 B CN114789420 B CN 114789420B CN 202210606146 A CN202210606146 A CN 202210606146A CN 114789420 B CN114789420 B CN 114789420B
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- block
- pressing block
- base
- main body
- torque
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- 238000003825 pressing Methods 0.000 claims abstract description 69
- 230000020347 spindle assembly Effects 0.000 claims description 12
- 230000000712 assembly Effects 0.000 claims description 6
- 238000000429 assembly Methods 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 abstract description 15
- 239000004484 Briquette Substances 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- PBMFSQRYOILNGV-UHFFFAOYSA-N pyridazine Chemical compound C1=CC=NN=C1 PBMFSQRYOILNGV-UHFFFAOYSA-N 0.000 description 1
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
-
- 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
Abstract
The application discloses adjustable moment of torsion screwdriver, including handle seat, base, central pivot subassembly, briquetting subassembly and regulating block, the base is located on the handle seat, and central pivot subassembly is located on the base, and briquetting subassembly movably locates the base, and briquetting subassembly is used for the butt center pivot subassembly; the pressing block assembly comprises a main body, a pressing block and an elastic piece, wherein the pressing block is movably arranged on the main body and 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 used for providing elastic force for the main body, so that the main body has a trend of approaching to the central rotating shaft assembly; the adjusting block is rotatably arranged on the base, and meanwhile, the adjusting block 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. Above-mentioned adjustable moment of torsion screwdriver can realize the regulation of lock attaching moment of torsion size, convenient to use and cost are cheap, need not to use electric drive, do not receive the operational 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 screwdrivers.
Background
In the prior art, when a server and a computer PC machine are assembled manually and disassembled by fault, each part is required to be fixed by using a screw driver locking screw, and because the locking torque requirement exists in each part locking process, an electric screw driver with a torque adjusting function is generally used for operation in production, however, the following disadvantages are caused by the use of the electric screw driver: firstly, the electric screwdriver is high in price, and high in fault maintenance cost, so that the production investment cost is increased; secondly, the use environment is limited, the work can be performed only by accessing a power supply, the application environment is limited, and the convenience is poor. Therefore, it is necessary for those skilled in the art to provide a convenient and low cost torque adjustable screwdriver.
Disclosure of Invention
The utility model aims at providing an adjustable moment of torsion screwdriver, can realize the regulation of lock attaching 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 a torque-adjustable screwdriver,
a handle seat;
the base is arranged on the handle seat;
a central spindle assembly disposed on the base for locking an attachment;
the briquetting subassembly, movably locates the base is used for the butt the center pivot subassembly makes the handle seat drives the center pivot subassembly rotates, includes:
the main body is contacted and abutted with the central rotating shaft assembly;
the pressing block is movably arranged on the main body and 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 is used for providing elastic force for the main body so that the main body has a trend of approaching to the central rotating shaft assembly;
the adjusting block is rotatably arranged on the base and 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 chute, 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 chute by pushing the pushing block.
In some embodiments, the arc body is provided with an arc groove, the pressing block is arranged in the arc groove, and the pressing block slides along the arc groove by pushing the pushing block so as to adjust the elasticity of the elastic piece.
In some embodiments, the base is further provided with a mounting groove, the briquette assembly is disposed in the mounting groove, and the mounting groove is communicated with the arc-shaped groove through a notch, and the notch is used for accommodating the briquette.
In some embodiments, the handle mount is provided with:
a first inner cavity for mounting the central spindle assembly;
the groove is arranged in the first inner cavity and used for accommodating the regulating block;
the base is provided with a second inner cavity, and the first inner cavity and the second inner cavity form a space for installing the central rotating shaft assembly.
In some embodiments, the handle further comprises a cover, the cover is connected to the handle seat, the cover is provided with a containing cavity, the containing cavity is used for containing the base, a sliding hole and a fixing hole are formed in the cover, 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 setting a fixing piece to fix the adjusting block.
In some embodiments, the press block assembly further comprises a guide post, the guide post is disposed in the main body, and the press block and the elastic member are both sleeved on the guide post.
In some embodiments, the central spindle assembly includes a central shaft and a saw gear, and the body is provided with teeth that mesh with the saw gear.
In some embodiments, the number of the adjusting blocks, the pressing block assemblies and the saw gears is two, the two adjusting blocks are respectively matched with the two pressing block assemblies, one adjusting block rotates clockwise to increase the elastic force of the elastic piece corresponding to the adjusting block, and the other adjusting block rotates anticlockwise to increase the elastic force of the elastic piece 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 column structure, the central shaft is provided with an inner hexagonal groove structure, and the outer hexagonal column structure is matched with the inner hexagonal groove structure so as to realize that the detachable tool bit is connected with the central rotating shaft assembly.
Compared with the background art, the torque-adjustable 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 a connecting piece, the pressing block assembly is movably arranged on the base, and the pressing block assembly is used for being abutted against the central rotating shaft assembly, so that the central rotating shaft assembly can be driven to rotate by operating the handle seat; further, the pressing block assembly comprises a main body, a pressing block and an elastic piece, wherein the main body is contacted and propped against the central rotating shaft assembly, the pressing block is movably arranged on the main body and 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 is used for providing elasticity for the main body, so that the main body has a trend of approaching the central rotating shaft assembly; the adjusting block is rotatably arranged on the base, and meanwhile, the adjusting block 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. Therefore, when the torsion is required to be regulated, the regulating block rotates around the axis of the central rotating shaft assembly, and drives the pressing block to move along the radial direction of the central rotating shaft assembly, so that the elastic piece provides elasticity for the main body, the elasticity deformation of the elastic piece can be regulated, the elasticity of the main body and the central rotating shaft assembly can be controlled, the friction force of 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 to lock the connecting piece. After the torque force is regulated to meet the technological requirement range, the screw driver is aligned to the connecting piece (screw), the handle seat is rotated until the central rotating shaft component slips and generates a 'click' sound, the screw driver is stopped to rotate, and locking is completed. Compared with the traditional screwdriver, the adjustable torque screwdriver provided by the embodiment of the application can realize the adjustment of the locking torque, is convenient to use and low in cost, can greatly reduce the production input cost, does not need to use electric drive, is not influenced by the use environment, is wide in application range and higher in convenience, and can avoid the risk of electric leakage and 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 that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present application, and that other drawings may be obtained according to the provided drawings without inventive effort to a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of a torque-adjustable screwdriver according to an embodiment of the present application;
FIG. 2 is a schematic view of the torque-adjustable screwdriver of FIG. 1 with the cap removed;
FIG. 3 is an assembled schematic view of the center spindle assembly, the press block assembly, and the adjustment block of the torque adjustable screwdriver of FIG. 2;
FIG. 4 is a schematic view of an assembly of the center spindle assembly, the press block assembly, and the adjustment block at another angle;
FIG. 5 is an enlarged schematic view of the assembly of the central spindle assembly, the press block assembly and the adjustment block;
FIG. 6 is a schematic diagram of the structure of the adjusting block in FIG. 5;
FIG. 7 is a schematic view of the press block assembly of FIG. 5;
FIG. 8 is a schematic view of another angle of the press block assembly;
FIG. 9 is a schematic view of the handle mount of the torque adjustable screwdriver of FIG. 1;
FIG. 10 is a schematic view of the structure of the cover of the torque adjustable screwdriver of FIG. 1;
FIG. 11 is a schematic view of the structure of the cover shown in FIG. 10 at another angle;
FIG. 12 is a schematic view of the center shaft assembly of the torque adjustable screwdriver of FIG. 1;
FIG. 13 is a schematic view of the removable bit of the torque adjustable 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 another angle of the base shown in fig. 14.
Wherein:
1-a handle seat, 11-a first inner cavity and 12-a groove;
2-base, 21-second cavity, 22-chute, 23-mounting groove, 24-gap;
3-center rotating shaft components, 31-center shafts, 311-inner hexagonal groove structures, 32-saw gears, 33-detachable tool bits, 331-outer hexagonal column structures and 34-bushings;
4-briquetting components, 41-main bodies, 411-teeth, 42-briquetting, 43-elastic pieces and 44-guide posts;
5-adjusting blocks, 51-pushing blocks, 52-arc-shaped bodies and 521-arc-shaped grooves;
6-shell cover, 61-containing cavity, 62-slide hole and 63-fixing hole.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
The core of the application is to provide an adjustable torque screwdriver, can realize the regulation of lock attach torque size, and can select corresponding mode according to the in service behavior, convenient to use and with low costs.
In order to better understand the aspects of the present application, a further detailed description of the present application will be provided below with reference to the accompanying drawings and detailed description.
The terms "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 diagram illustrating an overall structure of a torque-adjustable screwdriver according to an embodiment of the present application; FIG. 2 is a schematic view of the torque-adjustable screwdriver of FIG. 1 with the cap removed; FIG. 3 is an assembled schematic view of the center spindle assembly, the press block assembly, and the adjustment block of the torque adjustable screwdriver of FIG. 2; FIG. 4 is a schematic view of an assembly of the center spindle assembly, the press block assembly, and the adjustment block at another angle; FIG. 5 is an enlarged schematic view of the assembly of the central spindle assembly, the press block assembly and the adjustment block; FIG. 6 is a schematic diagram of the structure of the adjusting block in FIG. 5; FIG. 7 is a schematic view of the press block assembly of FIG. 5; FIG. 8 is a schematic view of another angle of the press block assembly; FIG. 9 is a schematic view of the handle mount of the torque adjustable screwdriver of FIG. 1; FIG. 10 is a schematic view of the structure of the cover of the torque adjustable screwdriver of FIG. 1; FIG. 11 is a schematic view of the structure of the cover shown in FIG. 10 at another angle; FIG. 12 is a schematic view of the center shaft assembly of the torque adjustable screwdriver of FIG. 1; FIG. 13 is a schematic view of the removable bit of the torque adjustable 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 another angle of the base shown in fig. 14.
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 a connecting piece, the pressing block assembly 4 is movably arranged on the base 2, and the pressing block assembly 4 is used for being abutted to 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; further, 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 abuts against the central rotating shaft assembly 3, the pressing block 42 is movably arranged 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 arranged between the pressing block 42 and the main body 41, and the elastic member 43 is used for providing elastic force for the main body 41, so that the main body 41 has a trend of approaching the central rotating shaft assembly 3; the adjusting block 5 is rotatably disposed on the base 2, and 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 assembly 3 so as to adjust the elastic force of the elastic member 43.
Therefore, when the torque force needs to be regulated, the regulating block 5 rotates around the axis of the central rotating shaft assembly 3, the regulating 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 for the main body 41, the elasticity deformation of the elastic piece 43 can be regulated to control the tightness of the main body 41 and 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 regulated to meet the technological requirement range, the screw driver is aligned with the connecting piece (screw), the handle seat 1 is rotated until the central rotating shaft assembly 3 slips and generates a 'click' sound, the screw driver is stopped to rotate, and the locking is completed.
Compared with the traditional screwdriver, the adjustable torque screwdriver provided by the embodiment of the application can realize the adjustment of the locking torque, is convenient to use and low in cost, can greatly reduce the production input cost, does not need to use electric drive, is not influenced by the use environment, is wide in application range and higher in convenience, and can avoid the risk of electric leakage and 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 push block 51, the push block 51 is arranged on the arc-shaped body 52, the push block 51 is arranged to facilitate the operation of a human hand to drive the adjusting block 5, the arc-shaped body 52 is arranged in the sliding groove 22, and the arc-shaped body 52 slides along the sliding groove 22 by pushing the push block 51.
In some embodiments, to facilitate the cooperation of the adjustment block 5 with the pressing block 42, the arc-shaped body 52 is provided with an arc-shaped groove 521, and the pressing block 42 is disposed in the arc-shaped groove 521, so that the pressing block 42 slides along the arc-shaped groove 521 by pushing the push 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 widened 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, when the pressing block 42 is positioned at the position (top end position) of the arc-shaped groove 521 farthest from the center of the arc-shaped body 52, the pressing block 42 drives the whole pressing block assembly 4 to move up to the limit position, so that the main body 41 is separated from contact with the central rotating shaft assembly 3, and the central rotating shaft assembly 3 and the main body 41 cannot interfere; when the pressing block 42 is located at a position (bottom end position) of the arc-shaped groove 521 closest to the center of the arc-shaped body 52, the elastic force received by the main body 41 is maximum, and the pressing block 42 drives the entire pressing block assembly 4 to move down to the extreme position, at which time the main body 41 is in contact with the center rotating shaft assembly 3 most tightly.
In some embodiments, to facilitate assembly of the briquette assembly 4, the base 2 is further provided with a mounting groove 23, the briquette assembly 4 is disposed in the mounting groove 23, the mounting groove 23 is adapted to the briquette assembly 4, and the mounting groove 23 is in communication with the arcuate groove 521 through a gap 24, the gap 24 is for receiving the briquette 42, and the height of the gap 24 should be greater than the height of the briquette 42.
It will be appreciated that when the adjusting block 5 and the pressing block assembly 4 are installed, the adjusting block 5 is embedded into the sliding groove 22 of the base 2 to be fixedly limited, and the pressing block assembly 4 is embedded into the installation groove 23 of the base 2 to be fixedly limited.
In some embodiments, the handle base 1 is provided with a first inner cavity 11 and a groove 12, wherein the first inner cavity 11 is arranged at the lower part of the handle base 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 assembly 3.
At the same time, eight screw holes are provided on the handle base 1, wherein four screw holes at the top and bottom are used for fixing the housing cover 6, and the other four screw holes are used for fixing the base 2.
In addition, the screw driver with adjustable torque also comprises a shell cover 6, wherein the shell cover 6 is connected with the handle seat 1, and the shell cover 6 is used as an outer protection shell of the inner part of the screw driver; the housing cover 6 is provided with a containing cavity 61, the containing cavity 61 is used for containing the base 2, the housing cover 6 is provided with a sliding hole 62, and the adjusting block 5 extends out of the sliding hole 62 so as to operate the sliding of the adjusting block 5.
It should be noted that, a fixing hole 63 (screw hole) is provided on the side of the cover 6 located at the sliding hole 62, and when the adjusting block 5 rotates to a preset position and reaches a torque force, a fixing member (screw) is provided in the fixing hole 63, and the fixing member abuts against the adjusting block 5, so as to achieve the purpose of fixing the adjusting block 5.
In some embodiments, to facilitate guiding 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 sleeved on the guide post 44, and the pressing block 42 extends out of the main body 41.
Of course, according to actual needs, the elastic member 43 is specifically a spring, which compresses and provides an elastic force to the main body 41 when the pressing block 42 moves downward.
In some embodiments, the central spindle assembly 3 includes a central shaft 31 and a saw gear 32, and the body 41 is provided with teeth 411, the teeth 411 being engaged with the saw gear 32. In addition, the central shaft 31 is also provided with a bushing 34, and the bushing 34 is used for protecting and limiting compensation of the abrasion of the central shaft 31.
Thus, the guide post 44 can be used to limit the movement of the spring and the pressing block 42 only along the axial direction of the guide post 44, under the guiding action of the guide post 44, the pressing block 42 can move along the axial direction 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, and 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 tool bit 33 (screwdriver bit), the detachable tool bit 33 is provided with an outer hexagonal column structure 331, the central shaft 31 is provided with an inner hexagonal groove structure 311, and the outer hexagonal column structure 331 is matched with the inner hexagonal groove structure 311 so as to realize that the detachable tool bit 33 is connected to the central rotating shaft assembly 3. The upper part of the detachable tool bit 33 is provided with an outer hexagonal column structure 331, the lower part is provided with a tool edge, and the tool edge is designed to be a corresponding tool edge according to the type of the screw.
Specifically, two saw gears 32 with opposite teeth 411 are designed on the central shaft 31, the two saw gears 32 are arranged at intervals along the axial direction of the central shaft 31, and the saw gears 32 are meshed with the teeth 411 on the main body 41 of the pressing block assembly 4; the lower end surface of the rod of the central shaft 31 is provided with an inner hexagonal groove 12 for inserting a detachable cutter head 33.
The screwdriver bit and the central shaft 31 are of an embedded connection structure, the screwdriver bit with different shapes can be replaced according to screw types, the applicability is high, the replacement is convenient, and the trouble of changing between different screw types in the production process can be solved.
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 piece 43 corresponding to the adjusting block, and the other adjusting block 5 (the lower adjusting block 5) rotates anticlockwise to increase the elastic force of the elastic piece 43 corresponding to the adjusting block.
In actual operation, firstly, the corresponding detachable tool bit 33 is selected to be embedded into the inner hexagonal groove 12 of the tail end surface of the central shaft 31 according to the screw type; then, selecting an adjusting block 5 corresponding to the direction to adjust the torque according to the screw locking direction, 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 tool bit is aligned with the screw cap, the handle seat 1 is rotated until the central shaft 31 of the screw driver slips and makes a 'click' sound, the screw driver stops rotating, and the locking is completed.
It should be noted that, 3 kinds of working mode switch can be realized to adjustable moment of torsion screwdriver that this application embodiment provided, and functional practicality is strong. Specifically, the screwdriver can support locking torque adjustment in the forward (clockwise) direction and the reverse (anticlockwise) direction, the two adjusting blocks 5 respectively correspond to the locking torque adjustment in the forward direction and the reverse direction, and the corresponding adjusting blocks 5 are selected to slide according to the locking direction of the screw so as to adjust the torque.
First mode of operation: when the screw is required to be locked in the forward direction and the torque requirement is met, the upper adjusting block is slid to be adjusted to 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 forward direction until the screwdriver emits a 'click' sound, the rotation is stopped, and the locking is completed; second mode of operation: when the screw is required to be locked in the opposite direction and the torque requirement is met, the lower adjusting block is slid to 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 to the clamping screw cap, the screwdriver is rotated in the opposite direction until the screwdriver stops rotating when the screwdriver gives out a 'pyridazine' sound, and the locking is completed; third mode of operation: when the locking has no torque requirement, the upper adjusting block and the lower adjusting block are simultaneously slid to the tail end position (the elastic force 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 at the moment and can not rotate relatively, the screwdriver is rotated in the required locking direction until the screw is locked, and the locking is completed.
In summary, the torque adjusting mode of the torque adjusting screwdriver provided in the embodiment of the present application is: the central shaft 31 is designed with the saw gear 32, the main body 41 of the pressing block assembly 4 is designed with the teeth 411 which are meshed with the saw gear 32 in a structure corresponding to the saw gear 32, the compression amount of the spring in the pressing block assembly 4 is regulated through the regulating block 5, the meshing tightness of the teeth 411 of the pressing block assembly 4 and the saw gear 32 is controlled, the friction force between the teeth 411 and the saw gear 32 is converted into the torque force of the central shaft 31, the central shaft 31 is driven to rotate and lock the screw, and when the torque of the central shaft 31 is larger than the friction force of the teeth 411 of the pressing block assembly 4 acting on the saw gear 32, the teeth 411 of the pressing block assembly 42 are jacked to be separated from the meshing state, slip with the saw gear 32 and generate a 'click' sound, so that the torque size can be regulated through regulating the compression amount of the spring.
It should be noted that in this specification relational terms such as first and second 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. Specific examples are employed herein to illustrate the principles and embodiments of the present application, and the above examples are provided only to assist in understanding the aspects of the present application and their core ideas. It should be noted that it would be obvious to those skilled in the art that various improvements and modifications can be made to the present application without departing from the principles of the present application, and such improvements and modifications fall within the scope of the claims of the present application.
Claims (8)
1. A torque adjustable screwdriver, comprising:
a handle seat (1);
the base (2) is arranged on the handle seat (1);
a central spindle assembly (3) provided on the base (2) for locking an attachment;
the briquetting subassembly (4) is movably located base (2) is used for the butt center pivot subassembly (3), makes handle seat (1) drive center pivot subassembly (3) rotate, include:
a main body (41) which is contacted and abutted with the central rotating shaft assembly (3);
a pressing block (42) movably arranged on the main body (41) and used for moving along the radial direction of the central rotating shaft assembly (3);
an elastic member (43) disposed 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);
the adjusting block (5) is rotatably arranged on the base (2) and is matched with the pressing block (42) to rotate around the axis of the central rotating shaft assembly (3) so as to adjust the elasticity of the elastic piece (43);
the center rotating shaft assembly (3) comprises a center shaft (31) and a saw gear (32), the main body (41) is provided with teeth (411), and the teeth (411) are meshed with the saw gear (32);
the number of the adjusting blocks (5), the number of the pressing block assemblies (4) and the number of the saw gears (32) are two, and the two adjusting blocks (5) are respectively matched with the two pressing block assemblies (4); one of the adjusting blocks (5) rotates in a clockwise direction to increase the elastic force of the elastic member (43) corresponding thereto, and the other adjusting block (5) rotates in a counterclockwise direction to increase the elastic force of the elastic member (43) corresponding thereto;
the tooth directions of the two saw gears (32) are opposite, and the two adjusting blocks (5) respectively correspond to the locking torque adjustment in the forward direction and the reverse direction.
2. The torque-adjustable screwdriver according to claim 1, wherein the base (2) is provided with a chute (22), the adjusting block (5) comprises an arc-shaped body (52) and a push block (51), the push block (51) is arranged on the arc-shaped body (52), and the arc-shaped body (52) slides along the chute (22) by pushing the push block (51).
3. The torque-adjustable screwdriver according to claim 2, wherein the arc-shaped body (52) is provided with an arc-shaped groove (521), the pressing block (42) is provided in the arc-shaped groove (521), and the pressing block (42) slides along the arc-shaped groove (521) by pushing the pushing block (51) to adjust the elastic force of the elastic member (43).
4. A torque-adjustable screwdriver according to claim 3, wherein the base (2) is further provided with a mounting groove (23), the press 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 press block (42).
5. The torque-adjustable screwdriver according to claim 1, wherein the handle mount (1) is provided with:
a first inner 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 installing 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 base (1), 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) 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 piece to fix the adjusting block (5).
7. The torque-adjustable screwdriver according to claim 1, wherein the pressing block assembly (4) further comprises a guide post (44), the guide post (44) is arranged in the main body (41), and the pressing block (42) and the elastic piece (43) are both sleeved on the guide post (44).
8. The torque-adjustable screwdriver according to claim 1, wherein the central shaft (31) is provided with a detachable tool bit (33), the detachable tool bit (33) is provided with an outer hexagonal column structure (331), the central shaft (31) is provided with an inner hexagonal groove structure (311), and the outer hexagonal column structure (331) is matched with the inner hexagonal groove structure (311) so as to realize that the detachable tool bit (33) is connected with the central rotating 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 |
|---|---|
| CN114789420A CN114789420A (en) | 2022-07-26 |
| CN114789420B true CN114789420B (en) | 2024-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210606146.5A Active CN114789420B (en) | 2022-05-31 | 2022-05-31 | Screw driver with adjustable torque |
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| Country | Link |
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| CN (1) | CN114789420B (en) |
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| CN103358265B (en) * | 2012-03-26 | 2016-06-15 | 杭州巨星工具有限公司 | Adjustable torque screwdriver |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN114789420A (en) | 2022-07-26 |
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