CN206550929U - A kind of ratchet spanner - Google Patents

Abstract

A ratchet wrench, which includes a wrench handle, a ratchet wheel and an end cap; the circular head surface of the wrench handle has an annular groove, and is a hollow structure, and pawls and springs are evenly distributed inside it, and the spring is always pressed The ratchet; the center of the ratchet wheel is a hexagonal through hole, and the tooth shape of the gear teeth is a right-angled trapezoid; the end cover can be stuck in the annular groove of the wrench handle, and the ratchet wheel is clamped in the middle. This kind of wrench can be realized in a limited space, and by rotating the wrench at a small angle, the parts can be tightened without repeatedly putting on the hexagonal bolt or nut, which is convenient and quick.

Description

a ratchet wrench

technical field

The utility model relates to a wrench, in particular to a ratchet wrench, which belongs to the field of mechanical tools.

Background technique

In daily life, when tightening the hexagonal bolts and hexagonal nuts and the space for the wrench to rotate is very limited, the general wrench requires the operator to take off the wrench after turning a certain angle, and then put on the bolt or Nut to continue tightening, repeats like this, very inconvenient.

Contents of the invention

The purpose of the utility model is to provide a ratchet wrench, which can conveniently and continuously tighten the bolts and nuts without repeatedly pulling them, which is convenient and fast.

In order to achieve this purpose, the utility model adopts the following scheme: a ratchet wrench, which is characterized in that it includes a wrench handle, a ratchet wheel and an end cap, and the two end caps are identical and can be respectively stuck on the wrench handle The ratchet is fixedly clamped in the middle by the two annular grooves on it.

The wrench handle is composed of two identical symmetrical parts. There is an annular groove on the round head, and the interior is a hollow structure, which can hold the ratchet wheel, and the ratchet and spring are fixed evenly, and the spring always presses the ratchet. The claws are attached to the teeth of the ratchet.

The center of circle of the ratchet is a hexagonal through hole, and the tooth shape of the gear teeth is a right-angled trapezoid.

The beneficial effect of the utility model is that: when the rotation space is limited, the wrench is turned counterclockwise, while the bolt or nut remains motionless, and the parts can be continuously tightened clockwise after turning a certain angle, without repeatedly removing and resetting Upper hex bolts or nuts for improved workability and increased efficiency.

Description of drawings

Fig. 1 is the exterior view of the utility model.

Fig. 2 is a full sectional view in the direction of A-A.

Fig. 3 is a full sectional view along B-B direction.

Figure 4 is a schematic diagram of the end cap.

Among them: 1. Wrench handle; 2. Pawl; 3. Ratchet wheel; 4. Spring; 5. Hexagonal through hole; 6. End cap; 7. Annular groove.

detailed description

As shown in Figure 1-4, when in use, put the hexagonal through hole 5 on the hexagonal bolt or nut that needs to be tightened, and the spring 4 presses the pawl 2 and gets stuck on the right-angled edge of the ratchet 3 teeth. When the wrench handle 1 is turned clockwise, the pawl 2 and the spring 4 rotate with the wrench handle 1, and thus rotate clockwise against the ratchet 3; when the space is limited, after turning to a certain angle, turn the wrench handle 1 counterclockwise, and the ratchet 3 is covered with hexagonal bolts or nuts and remains motionless. Under the pressure of spring 4, pawl 2 slides counterclockwise along with wrench handle 1 along the hypotenuse of ratchet 3 teeth. When it turns to a certain angle, pawl 2 Under the pressure of the spring 4, it can withstand the right-angled edge of the ratchet 3 teeth, and continue to turn the wrench handle 1 clockwise, then the ratchet 2 will continue to rotate against the ratchet 3, thereby tightening the hexagonal bolt or nut.

Claims (3)

1. a kind of ratchet spanner, it is characterised in that：It includes spanner handle（1）, ratchet（3）And end cap（6）, the end cap（6）It is Identical two, spanner handle can be stuck in（1）On two ring-shaped grooves（7）In, so that ratchet（3）Geometrical clamp In centre.

2. a kind of ratchet spanner according to claim 1, it is characterised in that：The spanner handle（1）It is two identical Symmetrical member composition, have ring-shaped groove on its rounded nose（7）, inside is hollow structure, can load ratchet（3）, and it is solid Surely it is evenly equipped with ratchet（2）And spring（4）, spring（4）All the time it press against ratchet（2）It is attached to ratchet（3）The gear teeth on.

3. a kind of ratchet spanner according to claim 1, it is characterised in that：The ratchet（3）The center of circle be hexagonal Through hole（5）, gear teeth tooth form is right-angled trapezium.