CN212218309U - Ratchet open spanner for single hand - Google Patents

Abstract

The utility model discloses a ratchet open-end wrench for single hand, including the pincers handle, be equipped with fixed jaw piece, movable jaw piece, adjusting worm on the pincers handle, be equipped with the tooth on the movable jaw piece, it has the adjusting handle to articulate on the pincers handle, it has the actuating lever to articulate on the adjusting handle, the tip of actuating lever articulates there is the connecting rod, be equipped with reset spring in the pincers handle, be connected with central rod on the upper reset spring, be equipped with the clutch on the central rod, the activity is equipped with the braking ratchet on the clutch, the activity is equipped with the braking pawl in the pincers handle, the activity cover is equipped with the driving fluted disc with the synchronous motion of braking ratchet on the central rod, the driving fluted disc meshes with driving sprocket mutually, be equipped with driven sprocket on the adjusting worm, the cover is equipped; the clamp handle is internally provided with a clamp opening spring which is connected with the driving fluted disc through a steel wire so as to drive the driving fluted disc to rotate reversely when the pawl is separated from the braking ratchet wheel, so that the movable clamp jaw block is opened.

Description

Ratchet open spanner for single hand

Technical Field

The utility model relates to a ratchet open-end wrench for one hand.

Background

Pipe wrenches are well known in the industry and are one of several types of wrenches used to grasp and rotate threaded pipes and pipe elements for assembly or disassembly. Many pipe tongs are adjustable. For example, a conventional pipe wrench uses a manually driven worm gear attached to an adjustable jaw to vary the distance between the adjustable jaw and a fixed jaw.

Often, access to the pipe is limited, which makes it difficult for a person using the pipe wrench to easily access the pipe, and thus makes it difficult for a person using the pipe wrench to properly align the pipe wrench to the pipe. In addition, when the pipe wrench is adjusted, a user needs to hold the handle of the pipe wrench with two hands to start the adjustable jaw of the pipe wrench, and the adjustment is very inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: provides a ratchet open-end wrench for one hand, which is convenient to adjust.

For solving the technical problem, the utility model discloses the technical scheme who adopts does: a single-hand ratchet open-ended wrench comprises a wrench handle, wherein a fixed jaw block, a movable jaw block and an adjusting worm for driving the movable jaw block to move towards the fixed jaw block are arranged on the wrench handle, teeth matched with the adjusting worm are arranged on the movable jaw block, an adjusting handle is hinged on the wrench handle, a side reset spring for pushing out the adjusting handle after inward rotation is arranged on the wrench handle, a driving rod is hinged on the adjusting handle, a connecting rod is hinged at the end part of the driving rod, an upper reset spring is arranged in the wrench handle, a central rod is connected on the upper reset spring, a clutch is arranged on the central rod, the outer surface of the clutch is conical, a brake ratchet wheel with a conical inner hole is movably sleeved on the periphery of the clutch is arranged in the wrench handle, when the central rod is in a free state, the clutch and the brake ratchet wheel are tightly sleeved to enable the clutch to drive the brake ratchet wheel to move, and a brake pawl for, a driving fluted disc which synchronously moves with the braking ratchet wheel is movably sleeved on the central rod, a circle of driving teeth are arranged on the surface of the driving fluted disc, a transmission shaft is rotatably arranged in the forceps handle, the driving fluted disc is meshed with a driving chain wheel arranged on the transmission shaft, a driven chain wheel is arranged on the adjusting worm, and a driving chain is sleeved between the driving chain wheel and the driven chain wheel; the end part of the connecting rod is movably sleeved on the central rod through a connecting sleeve, and the side wall of the connecting sleeve is provided with at least one driving block matched with the driving groove on the clutch; the adjusting handle can drive the movable jaw block to move from an open state to a limit position close to the fixed jaw block through the connecting rod, the central rod, the clutch and the driving fluted disc once pressed; a tong opening spring is arranged in the tong handle and is connected with the driving fluted disc through a steel wire so as to drive the driving fluted disc to rotate reversely when the pawl is separated from the braking ratchet wheel to open the movable tong opening block; the clamp handle is movably provided with a clamp opening button, and the part of the clamp opening button positioned in the clamp handle is respectively provided with a first unlocking block which presses the central rod to separate the driving groove on the clutch from the driving block on the connecting sleeve and a second unlocking block which separates the brake pawl from the brake ratchet wheel.

As a preferable scheme, the pawl is rotatably arranged in the forceps handle through a rotating seat, a driving inclined groove matched with the second unlocking block is formed in the rotating seat, and the second unlocking block slides along the driving inclined groove to drive the pawl to rotate so as to be separated from the braking ratchet wheel when the forceps opening button is pressed down.

As a preferable scheme, a supporting spring is arranged between the pawl and the forceps handle, and when the forceps opening button is pressed down, the second unlocking block presses the pawl downwards to enable the pawl to be separated from the braking ratchet wheel.

The utility model has the advantages that:

according to the ratchet wheel open-end wrench for one hand, after the pipe wrench is extended to an operation position, the adjusting handle is pressed once, the movable jaw block is driven by the connecting rod, the central rod, the clutch and the driving fluted disc to move from an open state to a clamping position close to the fixed jaw block until the movable jaw block stops moving due to a direction acting force generated by a workpiece, an operator does not need to extend hands to the workpiece to adjust the position of the movable jaw block, and the ratchet wheel open-end wrench is convenient to use;

because the brake pawl for preventing the brake ratchet wheel from rotating reversely is movably arranged in the clamp handle, the movable clamp jaw block which is adjusted in place can be ensured not to be loosened in the use process, and the use reliability is ensured.

After the combined type clutch is used, the clamp handle is movably provided with the clamp opening button, and the part of the clamp opening button, which is positioned in the clamp handle, is respectively provided with a first unlocking block which presses the central rod to enable the driving groove on the clutch to be separated from the driving block on the connecting sleeve and a second unlocking block which enables the braking pawl to be separated from the braking ratchet wheel, so that the unlocking is very convenient, and the operation can be realized by one hand; the movable jaw block is automatically opened after unlocking, so that the use is facilitated.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic perspective view of another angle of the present invention (with parts hidden for clarity).

Fig. 3 is a schematic view of a partial three-dimensional structure of the present invention.

Fig. 4 is a schematic diagram of the local explosion structure of the present invention.

In fig. 1 to 4: 1. the automatic transmission mechanism comprises a clamp handle, 2 parts of a fixed clamp opening block, 3 parts of a movable clamp opening block, 4 parts of an adjusting worm, 5 parts of teeth, 6 parts of an adjusting handle, 7 parts of a side return spring, 8 parts of a driving rod, 9 parts of a connecting rod, 10 parts of an upper return spring, 11 parts of a central rod and 12 parts of a clutch; 13. the brake ratchet wheel, 14 brake pawls, 15 driving fluted discs, 16 transmission shafts, 17 driving chain wheels, 18 driven chain wheels, 19 driving chains, 20 connecting sleeves and 21 driving blocks; 22. a tong opening spring, 23. a rotating seat, 24. a tong opening button.

Detailed Description

The following describes in detail a specific embodiment of the present invention with reference to the drawings.

As shown in fig. 1-4, the ratchet open-ended wrench for one hand comprises a wrench handle 1, wherein the wrench handle 1 is provided with a fixed jaw block 2, a movable jaw block 3 and an adjusting worm 4 for driving the movable jaw block 3 to move towards the fixed jaw block 2, and the movable jaw block 3 is provided with teeth 5 matched with the adjusting worm 4.

An adjusting handle 6 is hinged on a clamp handle 1, a side return spring 7 which pushes out the adjusting handle 6 after inward rotation is arranged on the clamp handle 1, a driving rod 8 is hinged on the adjusting handle 6, the end part of the driving rod 8 is hinged with a connecting rod 9, an upper return spring 10 is arranged in the clamp handle 1, a central rod 11 is connected on the upper return spring 10, a clutch 12 is arranged on the central rod 11, the outer surface of the clutch 12 is conical, a brake ratchet wheel 13 which is movably sleeved on the inner hole on the periphery of the clutch 12 and is conical is arranged in the clamp handle 1, when the central rod 11 is in a free state, the clutch 12 and the brake ratchet wheel 13 are firmly sleeved to enable the clutch 12 to drive the brake ratchet wheel 13 to move, a brake pawl 14 which prevents the brake ratchet wheel 13 from reversely rotating is movably arranged in the clamp handle 1, a driving fluted disc 15 which synchronously moves with the brake ratchet wheel 13 is movably sleeved on, a transmission shaft 16 is rotatably arranged in the clamp handle 1, a driving fluted disc 15 is meshed with a driving sprocket 17 arranged on the transmission shaft 16, a driven sprocket 18 is arranged on the adjusting worm 4, and a driving chain 19 is sleeved between the driving sprocket 17 and the driven sprocket 18;

the end part of the connecting rod 9 is movably sleeved on the central rod 11 through a connecting sleeve 20, and two driving blocks 21 respectively matched with the two driving grooves on the clutch 12 are arranged on the side wall of the connecting sleeve 20; the adjusting handle 6 can drive the movable jaw block 3 to move from an open state to a limit position close to the fixed jaw block 2 through the connecting rod 9, the central rod 11, the clutch 12 and the driving fluted disc 15 after being pressed once; a tong opening spring 22 is arranged in the tong handle 1, and the tong opening spring 22 is connected with the driving fluted disc 15 through a steel wire 23 so as to drive the driving fluted disc 15 to rotate reversely when the pawl is disengaged from the braking ratchet wheel 13 to open the movable tong-jaw block 3;

the clamp handle 1 is movably provided with a clamp opening button 24, and the part of the clamp opening button 24 positioned in the clamp handle 1 is respectively provided with a first unlocking block which presses the central rod 11 to enable the driving groove on the clutch 12 to be separated from the driving block 21 on the connecting sleeve 20 and a second unlocking block which enables the brake pawl 14 to be separated from the brake ratchet wheel 13.

The pawl is rotatably arranged in the pliers handle 1 through a rotating seat 23, a driving inclined groove matched with the second unlocking block is formed in the rotating seat 23, and the second unlocking block slides along the driving inclined groove to drive the pawl to rotate so as to be separated from the braking ratchet wheel 13 when the pliers opening button 24 is pressed down.

The above-mentioned embodiments are merely illustrative of the principles and effects of the present invention, and some embodiments may be applied, and are not intended to limit the present invention; it should be noted that, for those skilled in the art, without departing from the inventive concept, several variations and modifications can be made, which are within the scope of the present invention.

Claims (3)

1. Ratchet open-ended spanner is used to singlehanded, including the pincers handle, be equipped with fixed jaw piece, activity jaw piece and drive activity jaw piece on the pincers handle to the regulation worm of fixed jaw piece motion, be equipped with on the activity jaw piece and adjust worm matched with tooth, its characterized in that: the adjustable clamp is characterized in that an adjusting handle is hinged on the clamp handle, a side reset spring which pushes out the adjusting handle after inward rotation is arranged on the clamp handle, a driving rod is hinged on the adjusting handle, a connecting rod is hinged at the end part of the driving rod, an upper reset spring is arranged in the clamp handle, a central rod is connected on the upper reset spring, a clutch is arranged on the central rod, the outer surface of the clutch is conical, a brake ratchet wheel which is conical in inner hole and movably sleeved on the periphery of the clutch is arranged in the clamp handle, when the central rod is in a free state, the clutch and the brake ratchet wheel are firmly sleeved, so that the clutch can drive the brake ratchet wheel to move, a brake pawl which prevents the brake ratchet wheel from reversely rotating is movably arranged in the clamp handle, a driving fluted disc which synchronously moves with the brake ratchet wheel is movably sleeved on the central rod, a circle of driving teeth is arranged, a driven chain wheel is arranged on the adjusting worm, and a driving chain is sleeved between the driving chain wheel and the driven chain wheel; the end part of the connecting rod is movably sleeved on the central rod through a connecting sleeve, and the side wall of the connecting sleeve is provided with at least one driving block matched with the driving groove on the clutch; the adjusting handle can drive the movable jaw block to move from an open state to a limit position close to the fixed jaw block through the connecting rod, the central rod, the clutch and the driving fluted disc once pressed; a tong opening spring is arranged in the tong handle and is connected with the driving fluted disc through a steel wire so as to drive the driving fluted disc to rotate reversely when the pawl is separated from the braking ratchet wheel to open the movable tong opening block; the clamp handle is movably provided with a clamp opening button, and the part of the clamp opening button positioned in the clamp handle is respectively provided with a first unlocking block which presses the central rod to separate the driving groove on the clutch from the driving block on the connecting sleeve and a second unlocking block which separates the brake pawl from the brake ratchet wheel.

2. The single-handed ratchet open-ended wrench of claim 1, wherein: the pawl is rotatably arranged in the clamp handle through the rotating seat, the rotating seat is provided with a driving inclined groove matched with the second unlocking block, and the second unlocking block slides along the driving inclined groove to drive the pawl to rotate so as to be separated from the braking ratchet wheel when the clamp opening button is pressed down.

3. The single-handed ratchet open-ended wrench of claim 2, wherein: and a supporting spring is arranged between the pawl and the clamp handle, and the second unlocking block presses the pawl downwards to separate the pawl from the braking ratchet wheel when the clamp opening button is pressed downwards.

Images