CN108858008A - A kind of ratchet extruding spanner - Google Patents

Abstract

The invention relates to a ratchet squeeze wrench, comprising: a handle, a fixed pliers body and a movable pliers body are arranged at the front end of the handle, teeth are arranged on the movable pliers body; a worm is arranged in the handle, and the worm and the teeth of the movable pliers body mesh , turning the worm can drive the movable pliers to move; the transmission mechanism is set in the handle and connected with the worm to drive the worm to rotate; squeeze the handle, the squeeze handle is connected with the transmission mechanism, and the squeeze handle can pass through the transmission mechanism Drive the worm to rotate. The worm is inside the handle, it is not directly operated by the operator, but is connected with the extrusion handle through the transmission structure, the extrusion handle is hinged with the handle, hold the handle, and squeeze the extrusion handle, at this time through the transmission mechanism To drive the worm to rotate, it is only necessary to convert the rotation of the extruding handle into the rotation of the worm here. The operation is relatively simple, and this operation method is relatively fast, and the clamping can be realized quickly.

Description

A ratchet squeeze wrench

technical field

The invention relates to a wrench, in particular to a ratchet extrusion wrench.

Background technique

As a tool often used in daily work, wrenches are frequently used. Wrenches are divided into dull wrenches and adjustable wrenches. The size and specifications of dull wrenches are fixed. A dull wrench has only one specification or only two specifications. The size and specification are variable, with variable clamping openings, which can adapt to workpieces from the smallest clamping opening to the largest clamping opening, so the use range of the adjustable wrench will be wider.

However, the clamping port of the adjustable wrench keeps the workpiece stationary after clamping the workpiece, and generally can only rotate in one direction, that is to say, either rotate the workpiece clockwise or counterclockwise, which cannot be achieved when the workpiece is clamped. Arbitrary conversion between clockwise rotation and counterclockwise rotation causes the adjustable wrench to be separated from the workpiece when it needs to be rotated, and the operation is cumbersome.

The existing adjustable wrench controls the movable pliers using the worm rotation method, but the worm needs to rotate round by round, and the speed is relatively slow. When operating with one hand, the worm is mainly rotated by the thumb, so the operation is more troublesome . And control movable pliers body with worm screw rotation, sometimes can not accurately select suitable worm screw rotation direction to control the opening and closing of jaws, at first turning worm screw, may cause movable pliers body to produce opposite moving direction.

Contents of the invention

The invention provides a ratchet extrusion wrench. A hinged extrusion handle is arranged on the handle. The extrusion handle drives a movable pliers body to move through a transmission mechanism, so that the movable pliers body approaches and closes the jaws relative to the fixed pliers body.

The invention provides a ratchet squeeze wrench, in which a transmission mechanism is arranged in the handle, and the transmission mechanism unidirectionally drives the movable pliers to move, and the movable pliers are separated from the fixed pliers to realize reset through the reset mechanism.

The specific technical solution of the present invention is: a ratchet squeeze wrench, comprising:

The handle, the front end of the handle is provided with a fixed pliers body and a movable pliers body, and the movable pliers body is provided with teeth;

The worm is arranged in the handle, and the worm meshes with the teeth of the movable pliers, and the movable pliers can be driven to move by turning the worm;

The transmission mechanism is arranged in the handle and connected with the worm to drive the worm to rotate;

The extruding handle is hinged with the handle and has an extruding part extending out of the handle. The extruding handle is connected with the transmission mechanism, and the extruding handle can drive the worm to rotate through the transmission mechanism.

The worm is set in the handle, and the worm meshes with the teeth of the movable pliers. As long as the worm is turned, the movable pliers can be driven closer or farther away from the fixed pliers, so as to realize the closing or opening of the clamping mouth; the worm is in the handle, not by The operator directly rotates the operation, but establishes a connection with the extrusion handle through the transmission structure. The extrusion handle is hinged with the handle, holds the handle, and squeezes the extrusion handle. At this time, the transmission mechanism drives the worm to rotate. It is enough to convert the rotation of the extrusion handle into the rotation of the worm. The simple method is to use the ratchet mechanism as the transmission mechanism to drive the worm to rotate through the ratchet. A rotating shaft can also be used, and the rotation of the extrusion handle is converted into the rotation of the shaft. The rotation of the rotating shaft is transmitted to the worm, which then drives the worm to rotate. The extrusion handle is hingedly connected to the handle. Just hold-release-hold again to make the extrusion handle rotate relative to the handle, and this method belongs to step Progressive type, that is, every time the squeeze handle is held and rotated, the worm can be driven to rotate an angle. When the squeeze handle is released, the worm will not rotate. The operation is relatively simple, and this operation method is relatively fast and can be quickly Achieve clamping.

Considering the various structures of the transmission mechanism, as a preference, the transmission mechanism adopts the combination of gears and transmission belts, including the end gear, the first bevel gear meshed with the end gear, and the first gear connected with the first bevel gear through the transmission belt. , the first gear is connected with the worm and rotates synchronously. The end gear meshes with the first bevel gear, the first bevel gear and the first gear are axially parallel, the extrusion handle drives the end gear to rotate, the end gear drives the first bevel gear to rotate, and the first bevel gear drives the first gear to rotate through the transmission belt , the first gear is connected to the worm, so that the first gear can drive the worm to rotate. Generally, the first gear is connected coaxially with the worm, and the transmission belt is a toothed belt, which can avoid slipping. Of course, the first bevel gear can also be directly connected to the first gear. It is transmitted through gears, or the first bevel gear and the first gear are directly meshed with a spur gear; the first bevel gear and the first gear can also be combined into one, the end gear directly drives the bevel gear, and the bevel gear drives the worm to rotate. In this way, there are fewer parts and a lower failure rate. Of course, the internal space of the handle must be sufficient.

Preferably, a transmission shaft is arranged in the middle of the end gear, and a connecting sleeve is sleeved on the transmission shaft. The connecting sleeve and the extruding handle are connected through a connecting rod. The extruding handle drives the connecting sleeve to rotate through the connecting rod, and the connecting sleeve drives the transmission shaft to rotate. , the transmission shaft drives the end gear to rotate. The connecting sleeve is connected with the transmission shaft. When the extrusion handle rotates, the connecting rod drives the connecting sleeve to rotate, the connecting sleeve drives the transmission shaft to rotate, and the transmission shaft drives the end gear to rotate through the cooperation of the flat holes.

As a preference, a flat hole is arranged in the middle of the end gear, and the end of the transmission shaft is a flat end matched with the flat hole of the end gear. There is a spring, and under the action of the spring, the flat end of the transmission shaft cooperates with the flat hole of the end gear, and the tapered section and the connecting sleeve are axially pressed to realize transmission. Under the action of the spring, the transmission shaft and the connecting sleeve are pressed axially, and the transmission sleeve can drive the transmission shaft to rotate. If the spring is compressed by pressing the transmission shaft, there will be a gap between the conical section of the transmission shaft and the connecting sleeve, and the connecting sleeve will It cannot drive the transmission shaft to rotate; of course, for the convenience of operation, a one-way bearing is sleeved outside the tapered section of the transmission shaft, and the connecting sleeve is placed outside the one-way bearing, so that the transmission shaft is pressed against the one-way bearing under the force of the spring , the connecting sleeve can drive the transmission shaft to rotate through the one-way bearing. If the extrusion handle is released, the connecting sleeve can rotate smoothly due to the transition of the one-way bearing.

Considering that the size of the jaws of the wrench needs to be variable, the movable pliers body should be close to the fixed pliers body, and at the same time, it should be convenient to fix the pliers body. As a preference, a reset mechanism is provided in the handle, and the reset mechanism adopts rolled shrapnel Structure, one end of the shrapnel is fixed to the handle, the other end of the shrapnel is connected to the transmission mechanism, and the shrapnel transmits the restoring force to the movable pliers through the transmission mechanism so that the movable pliers are separated from the fixed pliers. The shrapnel is connected to the transmission mechanism. When the extrusion handle drives the movable pliers body to approach the fixed pliers body through the transmission mechanism, the shrapnel is shrunk or stretched, and there is always a restoring force on the shrapnel. If the extrusion handle is separated from the transmission mechanism, at this time Under the action of the restoring force of the shrapnel, the shrapnel drives the movable pliers away from the fixed pliers through the transmission mechanism, so that the jaws can be quickly opened.

Preferably, the reset mechanism further includes a button for controlling the separation of the extrusion handle from the transmission mechanism, and the button has a pressing portion exposed outside the handle. The button is connected with the transmission shaft, so when the button is pressed, the transmission shaft moves axially, and the transmission shaft is separated from the end gear, so that the transmission shaft will not hinder the rotation of the end gear.

Considering that the existing wrench needs to be removed from the workpiece to complete the rotation when in use, a movable pawl is arranged on the opposite surface of the fixed pliers body and the movable pliers body, and claw teeth are arranged on the opposite surface of the pawl , the moving direction of the ratchet on the fixed pliers body is opposite to the moving direction of the ratchet on the movable pliers body. The movable pawl is set so that the workpiece can be rotated normally when the fixed pliers and the movable pliers clamp the workpiece, such as turning the nut clockwise. When turning, the pawl moves so that the wrench does not need to be removed from the workpiece. Complete the turn.

Preferably, both the fixed pliers body and the movable pliers body are provided with sliding grooves, and the backs of the two ratchets are provided with sliding parts, the sliding parts cooperate with the sliding grooves, and return springs are arranged in the sliding grooves.

Preferably, one end of the sliding groove is closed, the sliding groove on the fixed pliers is closed at the end of the fixed pliers, and the sliding groove on the movable pliers is closed at the root of the movable pliers. One end of the sliding groove is closed, and the closed end corresponds to the normal rotation direction of the wrench, that is, when the pawl is at the closed end of the sliding groove, the wrench can normally rotate the workpiece.

Preferably, the sliding slot is provided with a limiting column, which limits the movement distance of the ratchet in the sliding slot. The limiting column can limit the moving distance of the pawl in the sliding groove, and when the surface wrench is turned, the pawl is disengaged from the sliding groove.

The beneficial effect of the present invention is: the worm is arranged in the handle, and the worm meshes with the teeth of the movable pliers, and the movable pliers can be driven closer or farther away from the fixed pliers as long as the worm is rotated, thereby realizing closing or opening of the clamping mouth; The worm is in the handle, and it is not directly operated by the operator, but is connected with the extrusion handle through the transmission structure, and the extrusion handle is hinged with the handle. Hold the handle and squeeze the extrusion handle. To drive the worm to rotate, it is enough to convert the rotation of the extrusion handle into the rotation of the worm. The simple method is to use the ratchet mechanism as the transmission mechanism to drive the worm to rotate through the pawl. It is also possible to use a rotating shaft and the extrusion handle The rotation of the shaft is converted into the rotation of the shaft of the shaft, and the rotation of the shaft is transmitted to the worm, which then drives the worm to rotate. The extrusion handle is hingedly connected to the handle. Just hold-release-hold again to make the extrusion handle rotate relative to the handle , and this method belongs to the stepping type, that is, every time the extrusion handle is held and rotated, the worm can be driven to rotate by an angle. When the extrusion handle is released, the worm will not rotate. The operation is relatively simple, and this operation method The speed is relatively fast, and the clamping can be realized quickly.

Description of drawings

Fig. 1 is a kind of structural representation of the present invention;

Fig. 2 is A-A sectional view among Fig. 1 of the present invention;

Fig. 3 is a kind of exploded schematic view of the present invention;

Fig. 4 is a clamping sectional view of the present invention;

Fig. 5 is a connection schematic diagram of an extrusion handle, a connecting rod and a connecting sleeve of the present invention;

Fig. 6 is a schematic diagram of the connection between the worm and the first gear in the present invention;

Fig. 7 is a schematic diagram of a pliers head of the present invention;

Fig. 8 is a schematic diagram of the rotation of the structure shown in Fig. 7 of the present invention;

Fig. 9 is a schematic diagram of the second pincer head of the present invention;

Fig. 10 is a schematic diagram of the rotation of the structure shown in Fig. 9 of the present invention;

In the figure: 1, handle, 2, button, 3, fixed pliers body, 4, first pawl, 5, second pawl, 6, movable pliers body, 7, connecting sleeve, 8, end sleeve, 9, single Bearing, 10, transmission shaft, 11, first bevel gear, 12, transmission belt, 13, shrapnel, 14, face gear, 15, spring, 16, extrusion handle, 17, handle shell, 18, inner plate, 19, Handle body, 20, notch, 21, return torsion spring, 22, shrapnel seat, 23, first gear, 24, connecting rod, 25, worm, 26, chute, 27, limit column, 28, return spring, 29 , Groove, 30, rib, 31, slip groove, 32, column hole.

Detailed ways

The present invention will be further described below through specific embodiments and in conjunction with the accompanying drawings.

Example 1:

As shown in Figures 1 to 8, a ratchet squeeze wrench (see Figure 1) includes a handle 1, a fixed pliers body 3 and a movable pliers body 6 are provided at the front end of the handle, teeth are provided on the movable pliers body, and the handle passes through Bearing pin is provided with worm screw 25, and worm screw surface is provided with worm screw tooth, and worm screw tooth meshes with the tooth on the movable pliers body. A transmission mechanism is arranged in the handle, and the transmission mechanism is connected with the worm to drive the worm to rotate. The handle is also hinged with an extruding handle 16, the side of the handle is provided with a notch 20, the extruding handle is in the notch, the middle of the extruding handle is hinged with the handle, and the front end of the extruding handle is connected with the transmission mechanism. Squeeze the extrusion handle, the extrusion handle rotates around the hinged part, the extrusion handle drives the worm to rotate through the transmission mechanism, and the worm drives the movable pliers body to move to the fixed pliers body to close the jaws.

Referring to Fig. 2 and Fig. 3, the transmission mechanism includes a first gear 23, a first bevel gear 11 connected with the first gear through a transmission belt 12, a face gear 14 connected with the first bevel gear, connected with the face gear and driving the face gear to rotate The transmission shaft 10, the connecting sleeve 7 sleeved on the transmission shaft, the connecting rod 24 connecting the extrusion handle and the connecting sleeve (see Figure 5). The first gear is coaxially connected with the worm, the end of the worm is provided with a radial groove 29 (see Figure 6), the end of the first gear is provided with a rib 30, and the rib is inserted into the groove, the first gear It can drive the worm to rotate synchronously. The transmission belt is a synchronous toothed belt, all of the first bevel gears are bevel teeth, the middle part of the first bevel gear is column teeth, the outer surface of the first gear is column teeth, and the synchronous tooth belt connects the column teeth of the first gear and the first bevel gear column teeth. The face gear is provided with face teeth, and the face teeth mesh with the bevel teeth of the first bevel gear. There is a flat hole in the middle of the end gear, and the end of the transmission shaft is a flat end matching the flat hole of the end gear. The flat end of the transmission shaft is inserted into the flat hole of the end gear, and the transmission shaft can be opposite to the end face The gear moves axially, and during the axial movement, the flat end of the rotating shaft is always matched with the flat hole of the face gear. The back side of the end face gear is provided with a cavity, the middle of the cavity is a connecting column, and the connecting column is a flat hole. The cavity is provided with coiled shrapnel 13, the side of the handle is provided with a shrapnel seat 22, the shrapnel is in the shrapnel seat, the side of the shrapnel seat is provided with a card slot, and the end of the outer ring of the shrapnel is provided with a U-shaped end. The type end snaps into the slot. The end of the inner ring of the shrapnel is provided with a U-shaped end, and the connecting column of the end gear is provided with a slot. The U-shaped end of the inner ring of the shrapnel snaps into the slot of the connecting post. During the rotation of the end gear, the shrapnel is driven to tighten. When there is no external force on the end gear, the restoring force of the shrapnel drives the end gear to rotate. At this time, the end gear drives the first bevel gear to rotate, and the first bevel gear drives the first gear to rotate through the transmission belt. , the first gear drives the worm to rotate, and then drives the movable pliers to move away from the fixed pliers.

The middle part of the transmission shaft is a tapered section, and one-way bearing 9 is sleeved on the outside of the tapered section. The directions are opposite, so that when the connecting sleeve drives the transmission shaft to rotate, the connecting sleeve drives the transmission shaft to rotate through one of the one-way bearings, and when the connecting sleeve rotates, the other one-way bearing blocks the rotation of the transmission shaft. The transmission shaft is also sleeved with an end sleeve 8, and the top of the transmission shaft is connected with a button 2. The top of the transmission shaft withstands the button, and pressing the button makes the transmission shaft move axially and compress the spring in the end gear. At this time, the cone of the transmission shaft The shape segment is separated from the one-way bearing. At this time, the one-way bearing cannot stop the rotation of the transmission shaft. Under the restoring force of the shrapnel, the end gear rotates, and the transmission shaft no longer blocks the end gear. At this time, the movable pliers are far away from the fixed pliers. . The connecting sleeve and the one-way bearing are over-fitted, and the connecting sleeve is provided with a protruding connecting portion, one end of the connecting rod is hinged with the connecting portion, and the other end of the connecting rod is hinged with the extruding handle.

The extrusion handle is hinged with the handle, and the hinged part is connected with a return torsion spring 21 (see Figure 3). One end of the return torsion spring is in contact with the extrusion handle, and the other end of the return torsion spring is in contact with the inside of the handle. Under the action of the extrusion handle, the extrusion part is separated from the handle.

Handle comprises middle handle body 19, and handle body has inner cavity, and the front end opening of handle body is connected and fixed with fixed pliers body. Both sides of the handle body are open, and both sides of the handle body are fixed with inner plates 18 and handle shells 17, the inner plates are closed and open, and the handle shells are made of rubber. The inner plate and the handle shell on one side are provided with a shaft hole for the transmission shaft to pass through. The button is arranged on the handle shell on the other side. The side of the shaft hole of the handle shell on the modified side is provided with a guide groove matching with the guide protrusion and an anti-loosening groove matched with the anti-off part. The size of the shaft hole on the inner plate of the modified side allows The button moves axially. The inner plate on the other side is provided with a perforation for the connecting column of the end gear to pass through, and the handle shell on the modified side is provided with a shrapnel seat hole, and the shrapnel seat is fixed at the shrapnel seat hole.

The opposite surface of the fixed pliers body and the movable pliers body is provided with movable pawls, the pawl on the fixed pliers body is the first pawl 4, the pawl on the movable pliers body is the second pawl 5, and the two pawls Claw teeth are arranged on the opposite surface, and the moving direction of the first ratchet is opposite to that of the second ratchet. Both the fixed pliers body and the movable pliers body are provided with sliding grooves 31, and the back sides of the two pawls are provided with sliding parts, and the sliding parts are provided with chute 26, and the two pawls are T-shaped, and the sliding parts are connected to the sliding parts. Compatible with slotting. A return spring 28 is arranged in the sliding groove, one end of the sliding groove is closed, one end of the returning spring is in contact with the closed end of the sliding groove, and the other end of the returning spring is in contact with the end of the sliding portion of the corresponding pawl (see Figure 7). The side wall of the sliding groove is provided with a column hole 32, and a limiting column 27 is inserted into the column hole. The axis of the column hole is just parallel to the chute, and the limiting column is inserted into the chute. At the end of the slip slot opening. The sliding groove on the fixed pliers opens at the root of the fixed pliers, and the sliding groove of the movable pliers opens at the end of the movable pliers. Under the action of the return spring, the pawl is always biased towards the closed end of the sliding groove (see Figure 4), the workpiece is stuck into the clamping mouth, hold the handle and the extrusion handle, and repeat the action of tightening and releasing, so that the movement The pliers approach to the fixed pliers and clamp the workpiece. At this time, the handle is turned clockwise, the first pawl and the second pawl are respectively at the closed ends of the sliding grooves, and the wrench can rotate the workpiece. When the wrench turns counterclockwise (see Figure 8), both the first pawl and the second pawl move toward the open end along their respective slide grooves and compress the return spring. To move, the claw teeth of the pawl are separated from the surface of the workpiece and rotate relative to the workpiece. If it is a hexagonal bolt, the pawl passes from one surface of the hexagon to the other adjacent surface, and the workpiece stay still. After the ratchet passes over, under the action of the return spring, the ratchet returns to the closed end of the corresponding sliding groove, and the wrench can turn clockwise again and rotate the workpiece. After the workpiece rotates in place, press the button, the transmission shaft is separated from the one-way bearing, under the action of the shrapnel, the end gear rotates, the movable pliers are far away from the fixed pliers, and the jaws are opened to the maximum.

Example 2:

As shown in Figure 9 and Figure 10, a ratchet squeeze wrench differs from Embodiment 1 in that the chute on the pawl is a chute with one end closed and the other end open, and the chute on the fixed pliers body and the movable pliers body The column holes are vertically corresponding to the chute. The position of the column hole is still at the opening end of the sliding slot. The limiting column is inserted into the column hole and inserted into the chute all the way. One end of the return spring withstands the closed end of the chute, and the return spring The other end of the pin bears against the restricting column. Refer to Example 1 for all the other structures.

The above are only preferred embodiments of the present invention, and do not limit the present invention in any way. All simple modifications, changes and equivalent transformations made to the above embodiments according to the technical essence of the present invention still belong to the technical solution of the present invention. scope of protection.

Claims (10)

1. a kind of ratchet squeezes spanner, it is characterised in that including：

Handle, handle front end are provided with fixed caliper and moving caliper, are arranged on moving caliper with teeth；

Worm screw is set in handle, and worm screw is meshed with the tooth of moving caliper, and it is mobile that moving caliper can be driven in rotary worm；

Transmission mechanism is set in handle, is connected with worm screw for driving worm screw to rotate；

Handle is squeezed, be hinged with handle and there is the press section reached outside handle, handle is squeezed and is connected with transmission mechanism, squeeze and squeeze Pressure handle can drive worm screw rotation by transmission mechanism.

2. a kind of ratchet according to claim 1 squeezes spanner, it is characterised in that transmission mechanism uses gear and transmission belt The mode combined including face gear, the first bevel gear being meshed with face gear, passes through transmission belt and first bevel gear Connected first gear, first gear are connected and rotate synchronously with worm screw.

3. a kind of ratchet according to claim 2 squeezes spanner, it is characterised in that transmission shaft is provided among face gear, It is equipped with connector sleeve on transmission shaft, is connected between connector sleeve and extruding handle by connecting rod, squeezes handle by connecting rod and drives connector sleeve Rotation, connector sleeve drive transmission shaft rotation, and transmission shaft drives face gear rotation.

4. squeezing spanner according to a kind of ratchet of the trivial book of claim 3, it is characterised in that be provided with flat hole among face gear, pass The end of moving axis is the flat-shaped end matched with the flat hole of face gear, and the position that transmission shaft and connector sleeve cooperate is taper Section, the end of transmission shaft are connected with spring, transmission shaft under the action of the spring, the flat hole cooperation of flat-shaped end and face gear, Conical section and connector sleeve axial compression simultaneously can realize transmission.

5. a kind of ratchet according to claim 1 or 2 or 3 or 4 squeezes spanner, it is characterised in that be provided with reset in handle Mechanism, resetting-mechanism use coiled elastic piece structure, and one end of elastic slice is mutually fixed with handle, the other end and transmission mechanism of elastic slice It is connected, restoring force is passed to moving caliper by transmission mechanism and makes the relatively fixed caliper separation of moving caliper by elastic slice.

6. a kind of ratchet according to claim 5 squeezes spanner, it is characterised in that resetting-mechanism further includes crowded for controlling The button that pressure handle is mutually separated with transmission mechanism, button have the press section exposed outside handle.

7. a kind of ratchet according to claim 1 or 2 or 3 or 4 squeezes spanner, it is characterised in that fixed caliper and adjustable clamp Moveable pawl is provided on the opposite face of body, pawl is provided with blade tooth on opposite face, the shifting of the pawl on fixed caliper Dynamic direction is opposite with the moving direction of the pawl on moving caliper.

8. a kind of ratchet according to claim 7 squeezes spanner, it is characterised in that be all provided on fixed caliper and moving caliper It is equipped with slippage slot, the back side of two pawls is provided with slipping part, and slipping part is matched with slippage slot, and reset is provided in slippage slot Spring.

9. a kind of ratchet according to claim 8 squeezes spanner, it is characterised in that slippage slot is closed at one end, on fixed caliper Slippage slot closed in the end position of fixed caliper, the slippage slot on moving caliper is closed in the root position of moving caliper.

10. a kind of ratchet according to claim 8 squeezes spanner, it is characterised in that restricted column is arranged on slippage slot, limits Moving distance of the column limitation pawl processed in slippage slot.