CN215748882U

CN215748882U - Torque screwdriver with quickly replaceable tool bit

Info

Publication number: CN215748882U
Application number: CN202121828815.0U
Authority: CN
Inventors: 江华
Original assignee: Shanghai Qigou Industrial Technology Co ltd
Current assignee: Shanghai Qigou Industrial Technology Co ltd
Priority date: 2021-08-06
Filing date: 2021-08-06
Publication date: 2022-02-08
Anticipated expiration: 2031-08-06

Abstract

The utility model discloses a torque screwdriver capable of quickly replacing a tool bit, wherein an extrusion plate is arranged in a first hydraulic cavity, the extrusion plate is connected with a tool bit connecting box in a sliding mode, the tool bit is arranged on the lower surface of the extrusion plate, connecting holes are formed in the positions, corresponding to four connecting cylinders, of the side wall of the tool bit, a second return spring is arranged on the side wall of a movable block, the end portion of the second return spring is fixedly connected with the tool bit connecting box, a manual return valve is arranged on a return pipe, the tool bit can be fixed by inserting a connecting rod into the connecting holes, the first return spring can be compressed and the second return spring can be elongated when the tool bit is installed, and when the tool bit is replaced, the extrusion plate can move downwards under the action of the first return spring and the second return spring by opening the manual return valve, and meanwhile, the connecting rod can retract into the connecting cylinders.

Description

Torque screwdriver with quickly replaceable tool bit

Technical Field

The utility model relates to the technical field of screwdrivers, in particular to a torque screwdriver with a quickly replaceable screwdriver head.

Background

The screwdriver is a common tool for screwing a screw to make the screwdriver in place, generally has a thin wedge-shaped head which can be inserted into a slot or a notch of a screw head, the working principle of a wheel shaft is utilized when the screwdriver is used for screwing the screw, the larger the wheel is, the more labor is saved, so that a screwdriver with a thick handle is more labor-saving than a screwdriver with a thin handle when the screwdriver is used for screwing the screw, the universal screwdriver is a screwdriver with a head and a handle which are manufactured together, is easy to prepare and can be used as long as the universal screwdriver is taken out, but because the screw has various different lengths and thicknesses, a plurality of different screwdrivers are required to be prepared in some cases, wherein the combined screwdriver is a screwdriver with a head and a handle which are separated, when the different types of screws are required to be installed, only the screwdriver head needs to be replaced, a large number of screwdrivers do not need to be provided, wherein the torque screwdriver is a screwdriver which is commonly used in modern industrial production, and is a preset torque force, when a screw is driven, the torsion reaches a preset torsion value, the machine stops working automatically, the machine is commonly used for assembling various plastic products and assembling precision instrument products with standard torsion requirements on each screw, the characteristic of a torsion screwdriver can more conveniently complete the locking work of the screws, the products cannot be broken or the quality of the products cannot be influenced, the conventional torsion screwdriver is inconvenient to replace a screwdriver head, and the use is not convenient enough.

SUMMERY OF THE UTILITY MODEL

In view of the problems in the prior art, the utility model discloses a torque screwdriver capable of quickly replacing a screwdriver bit, which adopts the technical scheme that the torque screwdriver comprises a torque screwdriver blade body, a screwdriver bit connecting box is arranged at the lower end of the torque screwdriver blade body, a first hydraulic cavity is arranged on the lower surface of the screwdriver bit connecting box, a second hydraulic cavity is arranged in the side wall of the screwdriver bit connecting box, the upper end of the first hydraulic cavity is communicated with the second hydraulic cavity through a one-way valve, hydraulic oil is arranged in the first hydraulic cavity and the second hydraulic cavity, four connecting cylinders are arranged at the lower end of the first hydraulic cavity at equal angles, the connecting cylinders are communicated with the second hydraulic cavity, a movable block is arranged in each connecting cylinder, the movable block is in sliding connection with the connecting cylinder, a connecting rod is arranged on the side wall of the movable block, a through hole is arranged at the position, corresponding to the connecting rod, of the side wall of each connecting cylinder, a squeezing plate is arranged in the first hydraulic cavity, and the squeezing plate is in sliding connection with the screwdriver bit connecting box, the lower surface of the extrusion plate is provided with a cutter head, the side wall of the cutter head is provided with connecting holes corresponding to the four connecting cylinders, the side wall of the cutter head is provided with a positioning unit, the upper surface of the extrusion plate is provided with a first return spring, the upper end of the first return spring is fixedly connected with the cutter head connecting box, the side wall of the movable block is provided with a second return spring, the end part of the second return spring is fixedly connected with the cutter head connecting box, a return pipe is arranged between the first hydraulic cavity and the second hydraulic cavity, the return pipe is provided with a manual return valve, the extrusion plate can be driven to move upwards by pressing the cutter head, hydraulic oil in the first hydraulic cavity can be extruded to the second hydraulic cavity through the check valve by the movement of the extrusion plate, so that the movable block can be pushed to move, the connecting rod can be extended out of the connecting cylinders by the movement of the movable block, and the connecting rod is inserted into the connecting holes, thereby can fix to the tool bit, when the installation tool bit, can compress first reset spring, can lengthen second reset spring simultaneously, when changing the tool bit, through opening manual reflux valve, under first reset spring and second reset spring's effect, can make the stripper plate downstream, can make in the connecting rod withdrawal connecting cylinder simultaneously, hydraulic oil can flow to first hydraulic pressure intracavity through the backward flow.

As a preferred technical scheme of the utility model, the positioning unit comprises a positioning rod and a positioning ring, the positioning ring is arranged on the side wall of the cutter head, the positioning rod is arranged on the side wall of the connecting cylinder and corresponds to the positioning ring, and the positioning rod and the positioning ring are sleeved and connected to position the cutter head.

As a preferable technical scheme of the utility model, the tool bit pressing device further comprises two pressing plates which are arranged on the side wall of the tool bit, so that the tool bit can be conveniently pressed.

In a preferred embodiment of the present invention, the positioning ring and the pressing plate are integrally formed with the cutting head, so as to prevent the positioning ring and the pressing plate from falling off.

As a preferred technical scheme of the utility model, the anti-slip screwdriver further comprises anti-slip strips, wherein the anti-slip strips are arranged on the side wall of the screwdriver body of the torque screwdriver at equal angles, are rubber strips and can be used for preventing slipping when in use.

The utility model has the beneficial effects that: according to the utility model, the extrusion plate can be driven to move upwards by the tool bit, hydraulic oil in the first hydraulic cavity can be extruded to the second hydraulic cavity through the one-way valve by the movement of the extrusion plate, so that the movable block can be pushed to move, the connecting rod can extend out of the connecting cylinder by the movement of the movable block, the tool bit can be fixed by inserting the connecting rod into the connecting hole, the first return spring can be compressed and the second return spring can be elongated when the tool bit is installed, the extrusion plate can move downwards under the action of the first return spring and the second return spring by opening the manual reflux valve when the tool bit is replaced, the connecting rod can retract into the connecting cylinder, and the hydraulic oil can flow into the first hydraulic cavity through the reflux pipe, so that the tool bit can be conveniently replaced.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a bottom schematic view of the inventive structure;

fig. 3 is a schematic sectional structure view of the cutter head connection box of the utility model.

In the figure: the screwdriver comprises a 1-torque screwdriver blade, a 2-bit connecting box, a 3-connecting unit, a 31-way valve, a 32-first hydraulic cavity, a 33-second hydraulic cavity, a 34-squeezing plate, a 35-moving block, a 36-connecting rod, a 4-replacing unit, a 41-return pipe, a 42-manual-return valve, a 43-first return spring, a 44-second return spring, a 5-bit, a 6-pressing plate, a 7-positioning unit, a 71-positioning rod, a 72-positioning ring, an 8-connecting hole, a 9-connecting barrel and a 10-antiskid strip.

Detailed Description

Example 1

As shown in fig. 1 to 3, the utility model discloses a torque screwdriver capable of quickly replacing a screwdriver bit, which adopts the technical scheme that the torque screwdriver comprises a torque screwdriver blade 1, a screwdriver bit connecting box 2 is arranged at the lower end of the torque screwdriver blade 1, a first hydraulic cavity 32 is arranged on the lower surface of the screwdriver bit connecting box 2, a second hydraulic cavity 33 is arranged in the side wall of the screwdriver bit connecting box 2, the upper end of the first hydraulic cavity 32 is communicated with the second hydraulic cavity 33 through a check valve 31, hydraulic oil is arranged in the first hydraulic cavity 32 and the second hydraulic cavity 33, four connecting cylinders 9 are arranged at the lower end of the first hydraulic cavity 32 at equal angles, the connecting cylinders 9 are communicated with the second hydraulic cavity 33, movable blocks 35 are arranged in the connecting cylinders 9, the movable blocks 35 are in sliding connection with the connecting cylinders 9, connecting rods 36 are arranged on the side walls of the movable blocks 35, through holes are arranged at positions corresponding to the connecting rods 36 on the side walls of the connecting cylinders 9, extrusion plates 34 are arranged in the first hydraulic cavity 32, the extrusion plate 34 is connected with the cutter head connecting box 2 in a sliding manner, the lower surface of the extrusion plate 34 is provided with the cutter head 5, the side wall of the cutter head 5 is provided with connecting holes 8 at positions corresponding to the four connecting cylinders 9, the side wall of the cutter head 5 is provided with the positioning unit 7, the upper surface of the extrusion plate 34 is provided with a first return spring 43, the upper end of the first return spring 43 is fixedly connected with the cutter head connecting box 2, the side wall of the movable block 35 is provided with a second return spring 44, the end part of the second return spring 44 is fixedly connected with the cutter head connecting box 2, a return pipe 41 is arranged between the first hydraulic cavity 32 and the second hydraulic cavity 33, the return pipe 41 is provided with a manual return valve 42, the extrusion plate 34 can be driven to move upwards by the cutter head 5, hydraulic oil in the first hydraulic cavity 32 can be extruded to the second hydraulic cavity 33 through the one-way valve 31 by the movement of the extrusion plate 34, so that the movable block 35 can be pushed to move, the connecting rod 36 can be stretched out from the connecting cylinder 9 through the movement of the movable block 35, through inserting the connecting rod 36 into the connecting hole 8, thereby fixing the cutter head 5, when the cutter head 5 is installed, the first return spring 43 can be compressed by the extrusion plate 34, the second return spring 44 can be elongated by the movable block 35, when the cutter head is replaced, the manual return valve 42 is opened, under the action of the first return spring 43 and the second return spring 44, the extrusion plate 34 can move downwards, meanwhile, the connecting rod 36 can be retracted into the connecting cylinder 9, hydraulic oil can flow into the first hydraulic cavity 32 through the return pipe 41, and therefore the cutter head 5 can be replaced conveniently.

As a preferred technical solution of the present invention, the positioning unit 7 includes a positioning rod 71 and a positioning ring 72, the positioning ring 72 is disposed on the side wall of the cutter head 5, the positioning rod 71 is disposed on the side wall of the connecting cylinder 9 and at a position corresponding to the positioning ring 72, the positioning rod 71 and the positioning ring 72 are sleeved, the cutter head can be positioned by the positioning rod 71 and the positioning ring 72 when the cutter head 5 is installed, and the connecting rod 36 can be smoothly inserted into the connecting hole 8.

As a preferable technical solution of the present invention, the cutting tool further comprises two pressing plates 6, the two pressing plates 6 are disposed on the side wall of the cutting head 5, and the cutting head 5 can be conveniently pressed by the pressing plates 6.

As a preferred embodiment of the present invention, the positioning ring 72 and the pressing plate 6 are integrally formed with the cutter head 5, so as to prevent the positioning ring 72 and the pressing plate 6 from falling off.

As a preferred technical scheme of the utility model, the anti-slip screwdriver further comprises anti-slip strips 10, wherein the anti-slip strips 10 are arranged on the side wall of the screwdriver body 1 of the torque screwdriver in an equal angle, the anti-slip strips 10 are rubber strips, and the anti-slip strips 10 can be used for preventing slipping when in use.

The working principle of the utility model is as follows: when the screwdriver is used, the hand-held torque screwdriver blade 1 can be used for preventing skidding during use through the anti-skidding strip 10, when the screwdriver head 5 is installed, the screwdriver head can be positioned when the screwdriver head 5 is installed through the positioning rod 71 and the positioning ring 72, the connecting rod 36 can be ensured to be smoothly inserted into the connecting hole 8, the screwdriver head 5 is pressed through the pressing plate 6, the extrusion plate 34 can be driven to move upwards through the screwdriver head 5, hydraulic oil in the first hydraulic cavity 32 can be extruded to the second hydraulic cavity 33 through the one-way valve 31 through the movement of the extrusion plate 34, so that the movable block 35 can be pushed to move, the connecting rod 36 can be extended out of the connecting cylinder 9 through the movement of the movable block 35, the connecting rod 36 can be inserted into the connecting hole 8, so that the screwdriver head 5 can be fixed, when the screwdriver head 5 is installed, the extrusion plate 34 can compress the first return spring 43, the second return spring 44 can be extended by the movable block 35, when changing the tool bit, open manual return valve 42, first reset spring 43 can make stripper plate 34 downstream, second reset spring 44 can drive movable block 35 and remove, can make connecting rod 36 withdraw connecting cylinder 9 in through movable block 35, hydraulic oil can flow to first hydraulic pressure chamber 32 in through back flow 41 under the effect of movable block 35 and stripper plate 34, through extracting connecting rod 36 from connecting hole 8 in, thereby can conveniently change tool bit 5, it is more convenient to use.

Components not described in detail herein are prior art.

Although the present invention has been described in detail with reference to the specific embodiments, the present invention is not limited to the above embodiments, and various changes and modifications without inventive changes may be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.

Claims

1. The utility model provides a can swiftly change moment of torsion screwdriver of tool bit, includes moment of torsion screwdriver blade (1), the lower extreme of moment of torsion screwdriver blade (1) is equipped with tool bit connecting box (2), a serial communication port, the lower surface of tool bit connecting box (2) is equipped with first hydraulic pressure chamber (32), be equipped with second hydraulic pressure chamber (33) in the lateral wall of tool bit connecting box (2), the upper end of first hydraulic pressure chamber (32) is through check valve (31) intercommunication second hydraulic pressure chamber (33), all be equipped with hydraulic oil in first hydraulic pressure chamber (32) and second hydraulic pressure chamber (33), the lower extreme isogonism of first hydraulic pressure chamber (32) is equipped with four connecting cylinders (9), connecting cylinder (9) intercommunication second hydraulic pressure chamber (33), be equipped with movable block (35) in connecting cylinder (9), sliding connection between movable block (35) and connecting cylinder (9), the lateral wall of movable block (35) is equipped with connecting rod (36), the position of the side wall of the connecting cylinder (9) corresponding to the connecting rod (36) is provided with a through hole, an extrusion plate (34) is arranged in the first hydraulic cavity (32), the extrusion plate (34) is connected with the cutter head connecting box (2) in a sliding manner, the lower surface of the extrusion plate (34) is provided with a cutter head (5), the side wall of the cutter head (5) is provided with a connecting hole (8) corresponding to the four connecting cylinders (9), the side wall of the cutter head (5) is provided with a positioning unit (7), the upper surface of the extrusion plate (34) is provided with a first return spring (43), the upper end of the first return spring (43) is fixedly connected with the cutter head connecting box (2), the side wall of the movable block (35) is provided with a second return spring (44), the end of the second return spring (44) is fixedly connected with the cutter head connecting box (2), and a return pipe (41) is arranged between the first hydraulic cavity (32) and the second hydraulic cavity (33), the return pipe (41) is provided with a manual return valve (42).

2. The torque screwdriver capable of quickly replacing the screwdriver head as recited in claim 1, wherein: positioning unit (7) are including locating lever (71) and holding ring (72), the lateral wall of tool bit (5) is arranged in holding ring (72), and the lateral wall of connecting cylinder (9) is arranged in holding lever (71) and the position that holding ring (72) correspond, cup joints between holding lever (71) and holding ring (72).

3. The torque screwdriver capable of quickly replacing the screwdriver head as recited in claim 1, wherein: the novel screwdriver is characterized by further comprising two pressing plates (6), wherein the two pressing plates (6) are arranged on the side wall of the screwdriver head (5).

4. The torque screwdriver capable of quickly replacing the screwdriver head as claimed in claim 2, wherein: the positioning ring (72) and the pressing plate (6) are integrally formed with the cutter head (5).

5. The torque screwdriver capable of quickly replacing the screwdriver head as recited in claim 1, wherein: the anti-skidding screwdriver blade is characterized by further comprising anti-skidding strips (10), wherein the anti-skidding strips (10) are arranged on the side wall of the torque screwdriver blade body (1) at equal angles, and the anti-skidding strips (10) are rubber strips.