CN224043669U - A wrench with interchangeable wrench heads - Google Patents

Abstract

The utility model discloses a wrench with a replaceable wrench head, which comprises a shell, wherein a sliding component is arranged in the shell in a sliding way, a locking component used for locking is arranged in the sliding component, an output component used for outputting the locking component is rotatably arranged at the bottom wall of a locking groove, a lifting component used for adjusting the length of the wrench is fixedly arranged at the bottom of the shell, the spanner of removable spanner head can be equipped with spanner head of corresponding shape, nut and the bolt of different shapes can be adapted, the diversified work demand is satisfied, through the output module, the mode of twisting by hand is laborsaving more, can effectively reduce operating personnel's intensity of labour, improve work efficiency, through lifting unit, adjustable power arm of spanner handle length, when twisting the higher nut or the bolt of fastening degree, can show laborsaving with the handle accent length, reduce operating personnel's intensity of labour, improve work efficiency.

Description

Spanner with replaceable spanner head

Technical Field

The utility model relates to the technical field of wrenches, in particular to a wrench with a replaceable wrench head.

Background

The wrench is a common installation and disassembly tool, and is a manual tool for screwing bolts, screws, nuts and other threads to tightly clamp openings or trepanning fasteners of the bolts or the nuts by utilizing a lever principle, the wrench is usually made of carbon or alloy structural steel, and the wrench is usually provided with openings or trepanning clamping the bolts or the nuts at one end or two ends of a handle part, and when in use, external force is applied to the handle part along the rotation direction of the threads, so that the bolts or the nuts can be screwed.

The handle length form of ordinary spanner is fixed relatively, can not adjust the length of handle, can be more laborsaving when handling some working conditions, and the size of spanner head is fixed, can only install or dismantle the part of corresponding size, does not generally need to carry the spanner of multiple equidimension when dismantling the screw of equidimension not, and is comparatively inconvenient like this.

It is desirable to provide a wrench with a replaceable wrench head.

Disclosure of utility model

The utility model aims to provide a spanner with a replaceable spanner head, which solves the problems that the length of a handle of a common spanner provided in the background art is relatively fixed, the length of the handle cannot be adjusted, the spanner head is relatively forceful when the spanner is used for coping with some working conditions, the spanner head is fixed in size and can only be used for installing or detaching parts with corresponding sizes, and a plurality of wrenches with different sizes are not required to be carried generally when screws with different sizes are detached, so that inconvenience is caused.

In order to achieve the purpose, the technical scheme is that the wrench with the replaceable wrench head comprises a shell, locking grooves are formed in two sides of the inner wall of the shell, a sliding component is installed in the shell in a sliding mode, a locking component used for locking is installed in the sliding component, an output component used for outputting the locking component is installed on the bottom wall of the shell in a rotating mode, and a lifting component used for adjusting the length of the wrench is fixedly installed at the bottom of the shell.

Preferably, the sliding component comprises a locking shell, the locking shell is slidably mounted in the shell, connecting columns are fixedly mounted at four corners of the top of the locking shell, spanner head bodies are fixedly mounted at the tops between the connecting columns, spanner heads with corresponding shapes can be provided for spanners with replaceable spanner heads, nuts and bolts with different shapes can be adapted, and diversified working requirements are met.

Preferably, the locking assembly comprises two rotating blocks, the two rotating blocks are respectively rotatably arranged at the centers of the top and the bottom of the locking shell, an axle center is fixedly arranged between the two rotating blocks, a locking gear is fixedly arranged in the middle of the axle center, two racks are symmetrically meshed and connected with the outer side of the locking gear, the two racks are slidably arranged in the locking shell, one of the rotating blocks is fixedly provided with a square column at the bottom, and in the wrench using process, if the wrench head is not fixed, the wrench head can fall off suddenly when exerting force, the locking assembly can firmly fix the wrench head, the accident situation is effectively avoided, and the personal safety of operators is guaranteed.

Preferably, the output assembly comprises a driven bevel gear, the driven bevel gear rotates and installs the diapire at the shell, driven bevel gear's outside meshing is connected with drive bevel gear, one side fixed mounting of drive bevel gear has the axis of rotation, the one end of axis of rotation wears out shell fixed mounting and has first knob, driven bevel gear's middle part has been seted up and has been carried out the square hole that corresponds with the square column, compares in some unblocks and locking modes that need great strength or complicated operation, like direct plug-in or use instrument sled press etc. the mode of screwing up is laborsaving more, can effectively reduce operating personnel's intensity of labour, improves work efficiency.

Preferably, the lifting assembly comprises a sliding rod, the top of the sliding rod is fixedly arranged at the bottom of the shell, a threaded hole is formed in the sliding rod, a sliding shell is slidably arranged at the outer side of the sliding rod, the length of a handle of the wrench can be adjusted to change a power arm, when a nut or a bolt with higher fastening degree is screwed, the handle can be obviously saved in length, the labor intensity of operators is reduced, and the working efficiency is improved.

Preferably, the inside of sliding shell rotates installs the transmission lead screw, the one end fixed mounting of transmission lead screw has the second knob, the outside transmission of transmission lead screw is connected in the inboard of screw hole, and manual knob drives the adjustment mode of lead screw and can realize comparatively accurate length adjustment, this makes operating personnel can be according to specific work demand, adjusts spanner handle length to the size that just meets.

Compared with the prior art, the utility model has the beneficial effects that:

The spanner with the replaceable spanner head can be provided with spanner heads with corresponding shapes through the lock assembly and the sliding assembly, nuts and bolts with different shapes can be matched, and diversified working requirements are met;

compared with some unlocking and locking modes which require larger force or complex operation, such as direct plug-in type or tool prying type, the manual screwing mode is more labor-saving, the labor intensity of operators can be effectively reduced, and the working efficiency is improved;

Through the lifting assembly, the length of the handle of the spanner can be adjusted to change the power arm, when the nut or the bolt with higher fastening degree is screwed, the length of the handle can be obviously saved, the labor intensity of operators is reduced, and the working efficiency is improved.

Drawings

FIG. 1 is a perspective view of a wrench according to the present utility model;

FIG. 2 is a diagram of a slide assembly of the wrench of the present utility model;

FIG. 3 is an internal view of the wrench of the present utility model;

FIG. 4 is a diagram of a locking assembly of the wrench of the present utility model;

fig. 5 is a diagram of a lifting assembly of the wrench of the present utility model.

The device comprises a shell, a locking groove, a locking shell, a connecting column, a wrench head body, a square column, a locking gear, a rack, a driven bevel gear, a driving bevel gear, a rotating shaft, a first knob, a sliding rod, a sliding shell, a driving screw rod, a second knob, a rotating block and a rotating block, wherein the locking groove, the locking shell, the connecting column, the wrench head body, the square column, the locking gear, the driving bevel gear, the rotating shaft and the rotating block are respectively arranged in the sequence of the rotating block, the driving bevel gear, the rotating shaft and the rotating block.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

Referring to fig. 1-5, the utility model provides a wrench with a replaceable wrench head, which comprises a shell 1, wherein locking grooves 2 are formed on two sides of the inner wall of the shell 1, a sliding component is slidably arranged in the shell 1, a locking component for locking is arranged in the sliding component, an output component for outputting the locking component is rotatably arranged on the bottom wall of the shell 1, and a lifting component for adjusting the length of the wrench is fixedly arranged at the bottom of the shell 1.

Further, the sliding assembly includes a locking case 3, the locking case 3 is slidably mounted in the housing 1, four corners at the top of the locking case 3 are fixedly mounted with connection posts 4, a wrench head body 5 is fixedly mounted at the top between the four connection posts 4, the wrench head body 5 is held by hand, and then the locking case 3, one end of which is fixedly connected through the connection posts 4, is placed in the housing 1, because the outer side of the locking case 3 is engaged with the inner wall of the housing 1, the locking case 3 can slide in the housing 1, and the locking case 3 can be completely placed in the housing 1 and taken out of the housing 1.

Further, the locking assembly comprises two rotating blocks 17, the two rotating blocks 17 are respectively and rotatably arranged at the centers of the top and the bottom of the locking shell 3, an axle center is fixedly arranged between the two rotating blocks 17, a locking gear 7 is fixedly arranged in the middle of the axle center, two racks 8 are symmetrically engaged and connected with the outer side of the locking gear 7, the two racks 8 are both slidably arranged in the locking shell 3, a square column 6 is fixedly arranged at the bottom of one rotating block 17, when the square column 6 is driven by a driven bevel gear 9 to rotate together, the square column 6 drives the rotating block 17 at the top to rotate in the locking shell 3, the two rotating blocks 17 synchronously rotate due to the existence of the axle center, then the locking gear 7 in the middle of the axle center is driven to rotate, the locking gear 7 is engaged with the two racks 8 to symmetrically move in the locking shell 3, the two racks 8 are exposed out of the locking shell 3 by one end of the transmission of the locking gear 7 and then enter the corresponding locking groove 2, so that the locking shell 3 is fixed, the wrench head body 5 is fixed, when different wrench head bodies 5 are required to be replaced, unlocking is completed by reversely rotating the first knob 12 to enable the two racks 8 to be retracted into the locking shell 3, the wrench head body 5 is detached and replaced, a position line is carved on the wrench head body 5, the position line is observed during installation, when the square column 6 is not aligned with the square hole, the wrench head body 5 cannot be installed to the bottom, the driven bevel gear 9 is driven to rotate by screwing the first knob 12, so that the angle of the square hole is adjusted until the wrench head body 5 is correspondingly matched with the square column 6, and the wrench head body 5 can be installed to the bottom to be fixed.

Further, the output assembly includes driven bevel gear 9, driven bevel gear 9 rotates the diapire of installing at shell 1, driven bevel gear 9's outside meshing is connected with drive bevel gear 10, drive bevel gear 10's one side fixed mounting has axis of rotation 11, shell 1 fixed mounting has first knob 12 is worn out to the one end of axis of rotation 11, square hole that corresponds with square column 6 is seted up at driven bevel gear 9's middle part, when installing locking shell 3 and slide in shell 1 inside, can drive the square column 6 of bottom installation and insert in driven bevel gear 9 middle part and its square hole that corresponds when it slides to a certain extent, then receive driven bevel gear 9's barrier and can not continue the downwardly moving any more, through manual first knob 12, drive one end drive bevel gear 10 through axis of rotation 11 rotates, drive bevel gear 9 in the outside rotates when drive bevel gear 10 rotates, driven bevel gear 9 drives the inside square column 6 in middle part square hole and rotates.

Further, the lifting assembly comprises a sliding rod 13, the top of the sliding rod 13 is fixedly arranged at the bottom of the shell 1, a threaded hole is formed in the sliding rod 13, a sliding shell 14 is slidably arranged on the outer side of the sliding rod 13, when the second knob 16 drives the transmission screw rod 15 to rotate, the transmission screw rod 15 rotates on the inner wall of the threaded hole, the sliding rod 13 is driven to slide and lift in the sliding shell 14, and therefore the length of a handle of the wrench is adjusted to adapt to different working conditions.

Further, the transmission screw rod 15 is rotatably installed in the sliding shell 14, one end of the transmission screw rod 15 is fixedly provided with the second knob 16, the outer side of the transmission screw rod 15 is in transmission connection with the inner side of the threaded hole, when the length of the wrench handle is required to be adjusted according to working conditions, the second knob 16 is manually screwed, the second knob 16 drives the transmission screw rod 15 on one side to rotate, and the manual knob drives the screw rod to adjust in a relatively precise length adjustment mode.

When the embodiment of the application is used, the following steps are adopted: the spanner head body 5 is held by hand, then one end of the lock shell 3 fixedly connected through the connecting post 4 is placed in the shell 1, because the outer side of the lock shell 3 is matched with the inner wall of the shell 1, the lock shell 3 can slide in the shell 1, the lock shell 3 can be placed in the shell 1 and taken out of the shell 1, when the lock shell 3 is installed in the shell 1 to slide, the square post 6 installed at the bottom is driven to be inserted into the square hole corresponding to the middle part of the driven bevel gear 9 when the lock shell 3 slides to a certain extent, then the lock shell cannot move downwards any more under the blocking of the driven bevel gear 9, the first knob 12 drives the transmission bevel gear 10 at one end to rotate through the rotating shaft 11 by screwing the first knob 12, and the driven bevel gear 9 at the outer side is driven to rotate when the transmission bevel gear 10 rotates, the driven bevel gear 9 drives the square column 6 in the middle square hole to rotate, when the square column 6 is driven by the driven bevel gear 9 to rotate together, the square column 6 drives the rotating blocks 17 at the top to rotate in the locking shell 3, the two rotating blocks 17 synchronously rotate due to the existence of the axle center, then the locking gear 7 in the middle of the axle center is driven to rotate, the locking gear 7 is meshed with the two racks 8 to symmetrically move in the locking shell 3, one end of the two racks 8, which is driven by the locking gear 7, is exposed out of the locking shell 3 and then enters the corresponding locking groove 2, so that the locking shell 3 is fixed, the wrench head body 5 is fixed, when different wrench head bodies 5 need to be replaced, the two racks 8 are retracted into the locking shell 3 to unlock the wrench head body 5 by reversely rotating the first knob 12, and the wrench head body 5 is detached and replaced, the wrench head body 5 is carved with a position line, when the wrench head body 5 is installed, the wrench head body 5 cannot be installed to the bottom when the square column 6 is not aligned with the square hole, the driven bevel gear 9 is driven to rotate through screwing the first knob 12, the wrench head body 5 can be installed to the bottom to be fixed until the wrench head body is matched with the square column 6, when the length of a wrench handle is required to be adjusted according to working conditions, the second knob 16 is screwed by hand, the second knob 16 drives the transmission screw rod 15 on one side to rotate, when the transmission screw rod 15 is driven to rotate through the second knob 16, the transmission screw rod 15 rotates on the inner wall of the threaded hole, the sliding rod 13 is driven to slide and lift in the sliding shell 14, and therefore the length of the wrench handle is adjusted to adapt to different working conditions.

Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims (4)

1. A wrench with a replaceable wrench head, comprising a housing (1), characterized in that: a locking groove (2) is provided on both sides of the inner wall of the housing (1), a sliding component is slidably installed inside the housing (1), a locking component for locking is installed inside the sliding component, an output component for outputting the locking component is rotatably installed on the bottom wall of the housing (1), and a lifting component for adjusting the length of the wrench is fixedly installed at the bottom of the housing (1); The sliding assembly includes a locking shell (3), which is slidably installed inside the outer shell (1). Connecting posts (4) are fixedly installed at the four corners of the top of the locking shell (3), and a wrench head body (5) is fixedly installed at the top between the four connecting posts (4). The locking assembly includes two rotating blocks (17), which are rotatably mounted at the center of the top and bottom of the locking housing (3), respectively. A shaft is fixedly mounted between the two rotating blocks (17), and a locking gear (7) is fixedly mounted in the middle of the shaft. Two racks (8) are symmetrically meshed on the outer side of the locking gear (7). Both racks (8) are slidably mounted inside the locking housing (3). A square post (6) is fixedly mounted at the bottom of one of the rotating blocks (17). 2. A wrench with a replaceable wrench head according to claim 1, characterized in that: the output component includes a driven bevel gear (9), the driven bevel gear (9) is rotatably mounted on the bottom wall of the housing (1), a transmission bevel gear (10) is meshed with the outer side of the driven bevel gear (9), a rotating shaft (11) is fixedly mounted on one side of the transmission bevel gear (10), a first knob (12) is fixedly mounted on one end of the rotating shaft (11) through the housing (1), and a square hole corresponding to the square post (6) is opened in the middle of the driven bevel gear (9). 3. A wrench with a replaceable wrench head according to claim 1, characterized in that: the lifting assembly includes a sliding rod (13), the top of the sliding rod (13) is fixedly installed at the bottom of the outer shell (1), a threaded hole is provided inside the sliding rod (13), and a sliding shell (14) is slidably installed on the outer side of the sliding rod (13). 4. A wrench with a replaceable wrench head according to claim 3, characterized in that: a transmission screw (15) is rotatably installed inside the sliding shell (14), a second knob (16) is fixedly installed at one end of the transmission screw (15), and the outer side of the transmission screw (15) is connected to the inner side of the threaded hole.