CN221291076U - Ratchet wrench with limiting function - Google Patents

Abstract

The utility model relates to the technical field of manual hardware tools, in particular to a ratchet wrench with a limiting function. The ratchet wheel and pawl are arranged at the front end of the handle, the ratchet wheel and pawl limiting mechanism is arranged at the front end of the handle and matched with the ratchet wheel, the limiting mechanism comprises a guide groove which is arranged on the side face of the front end of the handle and is close to the opening end of the ratchet wheel, the guide groove is arranged along the length direction of the handle, a push button capable of moving forwards and backwards is movably arranged in the guide groove, and the push button can be limited by being contacted with the end face of a nut in the ratchet wheel when moving forwards. The push button can be contacted with the end face of the nut in the ratchet wheel to limit the ratchet wrench to be above the nut without falling off when moving forwards, and the ratchet wrench is not required to be lifted upwards repeatedly by an operator, so that the ratchet wheel and the nut can be aligned completely, the work in the environment with clear vision can be performed, the normal work in the environment with unclear vision can be performed, the position of the nut can be found accurately, the operation difficulty is reduced, and the normal screwing work is realized.

Description

Ratchet wrench with limiting function

Technical field:

The utility model relates to the technical field of manual hardware tools, in particular to a ratchet wrench with a limiting function.

The background technology is as follows:

The existing ratchet wrench mainly comprises a handle, a ratchet wheel, a pawl and the like, and the ratchet wheel and the pawl are matched with each other to realize screwing operation of the components. According to the reversing operation, the reversing ratchet wrench is divided into a common ratchet wrench and a reversing ratchet wrench, and the reversing ratchet wrench is provided with a reversing switch on the basis of the common ratchet wrench, so that the clockwise and anticlockwise screwing operation can be realized. When the suspended nut is screwed, no limiting part is arranged above and below the nut, and even if the view is clear, an operator can repeatedly ratchet the ratchet sleeve on the nut, the ratchet spanner is easy to fall below the nut due to downward component force during ratchet screwing, and the operator needs to repeatedly lift the ratchet spanner upwards to align the ratchet with the nut so as to perform screwing operation, so that the operation is very inconvenient; when the line of sight of the working environment is unclear and the nut cannot be seen, such as narrow working environment, the workpiece is in the deep cavity, the line of sight is unclear, and the ratchet wrench cannot be aligned with the workpiece needing the knob in a visual observation mode, so that normal work cannot be performed.

In summary, how to realize the limit problem between the ratchet and the nut becomes a technical problem to be solved in industry.

The utility model comprises the following steps:

The utility model provides a ratchet wrench with a limiting function, solves the problem that the prior ratchet wrench is easy to fall off to the lower part of a nut and has high operation difficulty, and solves the problem that the prior ratchet wrench cannot be aligned with a knob workpiece when the visual field is unclear.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

The utility model provides a ratchet spanner with limit function, includes the handle, installs ratchet and pawl at the front end of handle, still including installing at handle front end and ratchet matched with stop gear, stop gear is including establishing the guide way that is close to the ratchet open end at handle front end side, and the guide way sets up along handle length direction, and movable mounting has the push button that can reciprocate in the guide way, can carry out spacingly with the nut terminal surface contact in the ratchet when pushing the button and moving forward.

The bottom of push button is equipped with the concave bulge, and the bellied upper portion of concave bulge and guide way sliding fit are equipped with the flange in the bellied bottom both sides of concave bulge, and the flange is used for preventing to push button and deviate from with the spacing groove clearance fit of guide way lower part.

The bottom of the push button is provided with two hemispherical grooves at intervals in the front-back direction, and the hemispherical grooves are matched with elastic pins arranged in the handle.

The elastic pin comprises a blind hole arranged in the handle, a spring and a hollow pin are arranged in the blind hole, the spring has upward elasticity to the hollow pin, and the top of the hollow pin is arranged in the hemispherical groove.

The upper surface of the push button is provided with anti-skid patterns.

The front end of the push button is provided with an arc-shaped groove.

The ratchet wrench comprises a common ratchet wrench and a reversing ratchet wrench.

The ratchet wheel is arranged in a ratchet wheel cavity at the front end of the handle, and a clamp spring is arranged on the side wall of the ratchet wheel cavity and matched with a clamping groove on the ratchet wheel to position the ratchet wheel.

The outer side surface of the ratchet wheel is provided with ratchets along the circumference, the positions of the outer side surface of the ratchet wheel, which are close to the two end surfaces, are respectively cylindrical surfaces, and the cylindrical surfaces are in clearance fit with the side walls of the ratchet wheel cavity for dust prevention.

The pawl is arranged in a pawl cavity at the front end of the handle, and a tower spring is arranged between the pawl and the bottom of the pawl cavity.

The utility model adopts the scheme and has the following beneficial effects:

Through setting up the push button that can reciprocate at the handle front end, can carry out spacingly with the nut terminal surface contact in the ratchet when will pushing the button and move forward to spacing ratchet is not dropped in the nut top, need not the operator and upwards carry ratchet repeatedly, can make ratchet and nut position align completely, can work in clear environment in the field of vision, can work normally in the unclear environment of sight again, can accurately find the position of nut, reduced the operation degree of difficulty, realize normal screwing work.

Description of the drawings:

Fig. 1 is a schematic cross-sectional view of the present utility model.

Fig. 2 is an enlarged schematic view of the portion a in fig. 1.

FIG. 3 is a schematic view of an exploded view of the ratchet end of the present utility model.

Fig. 4 is a schematic bottom view of the push button of the present utility model.

In the figure, 1, a handle, 2, a ratchet wheel, 3, a pawl, 4, a guide groove, 5, a push button, 6, a concave bulge, 7, a convex wing, 8, a limit groove, 9, a hemispherical groove, 10, a blind hole, 11, a spring, 12, a hollow pin, 13, an anti-skid pattern, 14, an arc groove, 15, a clamp spring, 16, a cylindrical surface, 17 and a tower spring.

The specific embodiment is as follows:

In order to clearly illustrate the technical features of the present solution, the present utility model will be described in detail below with reference to the following detailed description and the accompanying drawings.

As shown in fig. 1-4, the ratchet wrench with the limiting function comprises a handle 1, a ratchet 2 and a pawl 3 are arranged at the front end of the handle 1, and a limiting mechanism matched with the ratchet 2 is arranged at the front end of the handle 1, wherein the limiting mechanism comprises a guide groove 4 which is arranged on the side surface of the front end of the handle 1 and is close to the opening end of the ratchet 2, the guide groove 4 is arranged along the length direction of the handle 1, a push button 5 capable of moving forwards and backwards is movably arranged in the guide groove 4, and the push button 5 can be in contact with the end face of a nut in the ratchet 2 to limit when moving forwards.

The bottom of push button 5 is equipped with concave bulge 6, and the upper portion and the guide way 4 sliding fit of concave bulge 6 play the guide effect to the back-and-forth movement of push button 5, and the bottom both sides of concave bulge 6 are equipped with protruding wing 7, and protruding wing 7 is used for preventing to push button 5 to deviate from with the spacing groove 8 clearance fit of guide way 4 lower part.

Two hemispherical grooves 9 are formed in the front and back of the bottom of the push button 5 at intervals to form two gears, and the hemispherical grooves 9 are matched with elastic pins arranged in the handle 1.

The elastic pin comprises a blind hole 10 arranged in the handle 1, a spring 11 and a hollow pin 12 are arranged in the blind hole 10, the spring 11 has upward elasticity to the hollow pin 12, and the top of the hollow pin 12 is arranged in the hemispherical groove 9, so that the push button 5 can be fixed on one gear and does not move back and forth.

The upper surface of the push button 5 is provided with anti-slip lines 13, which play a role in preventing slipping when the push button 5 is pushed forwards and backwards.

The front end of the push button 5 is provided with an arc groove 14, and the arc groove 14 can be matched with a screw rod in a nut, so that the forward moving distance of the push button 5 can be increased.

The ratchet wrench comprises a common ratchet wrench and a reversing ratchet wrench, and the limiting mechanism can be applied to various types of ratchet wrenches.

The ratchet wheel 2 is arranged in a ratchet wheel cavity at the front end of the handle 1, and a clamp spring 15 is arranged on the side wall of the ratchet wheel cavity and matched with a clamping groove on the ratchet wheel 2 to position the ratchet wheel 2.

The ratchet is arranged on the outer side surface of the ratchet 2 along the circumference, the positions, close to the two end surfaces, of the outer side surface of the ratchet are respectively cylindrical surfaces 16, and the cylindrical surfaces 16 are in clearance fit with the side walls of the ratchet cavity for dust prevention, so that the clearance between the cylindrical surfaces 16 and the side walls of the ratchet cavity is small, large-particle dust is difficult to enter, and the inner ratchet can be protected.

The pawl 3 is arranged in a pawl cavity at the front end of the handle 1, a tower spring 17 is arranged between the pawl 3 and the bottom of the pawl cavity, and the ratchet 2 and the pawl 3 are matched with each other to realize the screwing work of the nut.

Working principle:

When the ratchet wheel is used, the push button 5 is pushed backwards, the top of the hollow pin 12 is clamped into the hemispherical groove 9 at the front side to position the push button 5, at the moment, the open slot of the ratchet wheel 2 is completely opened, the limit function is not provided, and the ratchet wheel 2 can be sleeved on the outer sides of the nuts and the screw rods to move up and down freely; the push button 5 is pushed forward, the top of the hollow pin 12 is clamped into the hemispherical groove 9 at the rear side to position the push button 5, at the moment, the push button 5 can partially cover the open slot of the ratchet wheel 2, the front end of the push button 5 can be in contact with the end face of the nut to limit the ratchet wrench to be above the nut without falling off when the nut is screwed, an operator is not required to repeatedly lift the ratchet wrench upwards, the ratchet wheel can be completely aligned with the position of the nut, the work in the environment with clear visual field can be realized, the blind nut finding can be realized on a workpiece in the environment with unclear visual line, the position of the nut can be accurately found, the operation difficulty is reduced, and the normal screwing work is realized.

The above embodiments are not to be taken as limiting the scope of the utility model, and any alternatives or modifications to the embodiments of the utility model will be apparent to those skilled in the art and fall within the scope of the utility model.

The present utility model is not described in detail in the present application, and is well known to those skilled in the art.

Claims (10)

1. The utility model provides a ratchet spanner with limit function, includes the handle, installs ratchet and pawl, its characterized in that at the front end of handle: the device is characterized by further comprising a limiting mechanism which is arranged at the front end of the handle and matched with the ratchet wheel, the limiting mechanism comprises a guide groove which is arranged on the side face of the front end of the handle and is close to the opening end of the ratchet wheel, the guide groove is arranged along the length direction of the handle, a push button which can move forwards and backwards is movably arranged in the guide groove, and the push button can be limited by contacting with the end face of a nut in the ratchet wheel when moving forwards.

2. The ratchet wrench with limiting function according to claim 1, wherein: the bottom of push button is equipped with the concave bulge, and the bellied upper portion of concave bulge and guide way sliding fit are equipped with the flange in the bellied bottom both sides of concave bulge, and the flange is used for preventing to push button and deviate from with the spacing groove clearance fit of guide way lower part.

3. The ratchet wrench with limiting function according to claim 1, wherein: the bottom of the push button is provided with two hemispherical grooves at intervals in the front-back direction, and the hemispherical grooves are matched with elastic pins arranged in the handle.

4. A ratchet wrench with limiting function according to claim 3, wherein: the elastic pin comprises a blind hole arranged in the handle, a spring and a hollow pin are arranged in the blind hole, the spring has upward elasticity to the hollow pin, and the top of the hollow pin is arranged in the hemispherical groove.

5. The ratchet wrench with limiting function according to claim 1, wherein: the upper surface of the push button is provided with anti-skid patterns.

6. The ratchet wrench with limiting function according to claim 1, wherein: the front end of the push button is provided with an arc-shaped groove.

7. The ratchet wrench with limiting function according to claim 1, wherein: the ratchet wrench comprises a common ratchet wrench and a reversing ratchet wrench.

8. The ratchet wrench with limiting function according to claim 1, wherein: the ratchet wheel is arranged in a ratchet wheel cavity at the front end of the handle, and a clamp spring is arranged on the side wall of the ratchet wheel cavity and matched with a clamping groove on the ratchet wheel to position the ratchet wheel.

9. The ratchet wrench with limiting function according to claim 8, wherein: the outer side surface of the ratchet wheel is provided with ratchets along the circumference, the positions of the outer side surface of the ratchet wheel, which are close to the two end surfaces, are respectively cylindrical surfaces, and the cylindrical surfaces are in clearance fit with the side walls of the ratchet wheel cavity for dust prevention.

10. The ratchet wrench with limiting function according to claim 1, wherein: the pawl is arranged in a pawl cavity at the front end of the handle, and a tower spring is arranged between the pawl and the bottom of the pawl cavity.