CN201304620Y - Ratchet spanner - Google Patents

Abstract

A ratchet spanner comprises a handle, a ratchet head, two locating rings, an adjusting ring, an adjusting ring cover, two spanner claws, two springs and a plurality of spanner claw cushions. The main body of the ratchet head is ring-shaped; two crescent filler blocks are connected symmetrically in the ring; a hollow elliptical cavity is formed between the two filler blocks; and the two spanner claws are symmetrically embedded in the ring of the adjusting ring and extend to one side through the hollow elliptical cavity between the two filler blocks. The ratchet spanner provided by the utility model has the advantages of simple structure, stepless pitch distance adjustment, adjustable ratchet direction and quick pitch distance adjustment. The ratchet spanner can screw or unscrew a nut when being sleeved on the nut, without need of being taken out.

Description

ratchet wrench

technical field

The utility model relates to a hand tool for tightening parts such as nuts, in particular to a ratchet wrench.

Background technique

The wrench of the prior art generally includes a handle and a fixed pliers body connected to the front end of the handle, a movable pliers body and a worm installed on the front end of the handle, and the movable pliers body is connected to the worm drive. During use, the worm is rotated by fingers so that the movable pliers contact the nut, and then the wrench is turned with force to tighten or loosen the nut. The problem with this wrench is that when the operating space is limited and the wrench cannot be turned around, it can only rotate at a small angle each time. When needing to continue to tighten or unscrew the nut, the wrench must be taken out, put on and tighten again after turning an angle, this action often will be repeated many times, and it is very inconvenient to use.

Utility model content

The purpose of this utility model is to solve the above-mentioned problems in the prior art, and to provide a ratchet wrench that can complete the tightening or loosening of the nut without taking it out.

In order to achieve the above object, the utility model adopts the following technical solutions: a ratchet wrench, which includes:

The handle, which is composed of a central plastic pad and two handle covers connected to both sides of the plastic pad;

The ratchet head is connected to the front end of the plastic pad in the center of the handle. Its main body is circular. There are two crescent-shaped pads symmetrically connected in the ring. The two pads protrude to one side, and the outer surface of the protruding part is provided with The radial positioning groove forms an elliptical cavity between the two pads;

Two positioning rings are respectively embedded in the radial positioning grooves of the two pads of the ratchet head and can slide along the positioning grooves;

The adjustment ring is set on the two lining blocks of the ratchet head and is fixedly connected with the two positioning rings;

The adjustment ring cover is connected to the upper surface of the adjustment ring;

Two wrench claws are symmetrically embedded in the ring of the adjustment ring and protrude to one side through the oval cavity between the two pads, and the two wrench claws can move inside and outside;

Two springs are respectively arranged between the two claws and the adjustment ring;

Wrench pad, liner on the inside of the wrench.

The handle is provided with an open slot for placing the claw pad, and the claw pad is placed in the open slot when not in use.

The adjustment ring is symmetrically provided with two sliding slots for inserting the wrench, the outer side of the sliding slots is connected outwards, and the inner side is provided with a baffle plate used as a spring seat.

The wrench claw is a three-segment broken-line structural member, including a block segment for being embedded in the chute on the adjusting ring, a transition connection segment and an angular wrench segment; on the block segment, there are The spring groove is provided with a magnetic block groove for connecting with the claw pad at the corner bottom of the angle-shaped pull tooth section.

The wrench pad has a shape and structure adapted to the wrench section of the wrench, and its inner surface for clamping the workpiece is flat or rack-shaped.

The connecting part of the ratchet head and the handle is provided with a ratchet pulling block adjustment mechanism for adjusting the rotation direction of the ratchet head.

The ratchet wrench of the utility model is simple in structure, has the advantages of stepless adjustment of tooth pitch, adjustable ratchet direction and fast adjustment of tooth pitch, and can complete the work of tightening or loosening the nut without taking it out once put on.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the utility model ratchet wrench;

Fig. 2 is a schematic diagram of the exploded structure of the utility model ratchet wrench;

Fig. 3 is the three-dimensional structure schematic diagram of the ratchet head in the utility model;

Fig. 4 is the schematic diagram of the front view structure of the ratchet head in the utility model;

Fig. 5 and Fig. 6 are the three-dimensional structure schematic diagrams of the adjustment ring in the utility model;

Fig. 7 is a side view structural schematic diagram of the adjustment ring in the utility model;

Fig. 8 is a schematic diagram of the three-dimensional structure of the wrench in the utility model;

Fig. 9 is a schematic diagram of a three-dimensional structure of a wrench pad in the utility model;

Fig. 10 is a three-dimensional structural schematic diagram of another claw pad in the present invention.

Detailed ways

Referring to Fig. 1 and Fig. 2, the utility model ratchet wrench includes a handle 1, a ratchet head 2, two positioning rings 3, an adjusting ring 4, an adjusting ring cover 5, two wrench claws 6, two springs 7 and a plurality of wrench pads 8 . A ratchet pulling block adjustment mechanism 9 for adjusting the rotation direction of the ratchet head is provided at the connection portion between the ratchet head 2 and the handle 1 .

Referring to Fig. 2, the handle 1 in the utility model is combined into a whole by a central plastic pad 11 and two handle covers 12, 13 connected on both sides of the plastic pad. The handle is provided with an open groove 14 for placing the claw pad, and the claw pad 8 is placed in the open groove when not in use.

Referring to Fig. 3 and Fig. 4, the ratchet head 2 in the utility model is connected to the front end of the plastic pad 11 in the center of the handle. It protrudes to one side, and a radial positioning groove 211 is provided on the outer surface of the protruding part, and an oval cavity 22 is formed between the two pads.

The two positioning rings 3 in the utility model are respectively embedded in the radial positioning grooves 211 of the two lining blocks 21 of the ratchet head and can slide along the positioning grooves.

Referring to Fig. 5, Fig. 6 and Fig. 7, the adjustment ring 4 in the utility model is set on the two lining blocks 21 of the ratchet head and fixedly connected with the two positioning rings 3 through a plurality of screws 43; Two sliding slots 41 for inserting the wrench are provided. The outer side of the sliding slots penetrates outwards, and the inner side is provided with a baffle plate 42 used as a spring seat.

The adjustment ring cover 5 in the utility model is connected to the upper surface of the adjustment ring by a plurality of screws 51 .

Referring to Fig. 8, the two claws 6 in the utility model are symmetrically embedded in the ring of the adjusting ring and protrude to one side through the oval cavity 22 between the two pads, and the two claws can move inside and outside; The wrench 6 is a three-segment broken-line structural member, including an insert segment 61 for being embedded in a sliding groove on the adjusting ring, a transitional connection segment 62 and an angled wrench segment 63 . A spring slot 64 is provided on the block section, and a magnet slot 65 for connecting with the pad of the wrench is provided at the corner bottom of the angled wrench section.

The two springs 7 in the utility model are respectively arranged between the two trigger claws 6 and the adjustment ring 4 , one end of which is embedded in the spring groove 64 of the trigger claw 6 , and the other end is pressed against the baffle plate 42 of the adjustment ring 4 .

Referring to Fig. 9 and Fig. 10, the wrench pad 8 in the utility model is lined on the inner side of the wrench 6. The wrench pad 8 has a shape and structure adapted to the wrench segment 63 of the wrench, and it is used for The inner surface for clamping the workpiece can be a flat plate 81 as shown in FIG. 9 , or a rack 82 as shown in FIG. 10 . At the bottom of the corner of the wrench pad 8, there is a magnetic block (not shown in Fig. 9 and Fig. 10 ) for inserting into the magnetic block groove 65 of the wrench 6, and the magnetic block stretches out to the outside.

When the ratchet wrench of the utility model is in use, put a suitable wrench pad on the wrench, hold the handle with one hand, and hold the adjustment ring with the other hand, or the handle does not move, and only the adjustment ring is turned; or the adjustment ring does not move. Turn the handle, that is, as long as the relative movement between the adjustment ring and the ratchet head is realized, during the relative movement of the adjustment ring relative to the ratchet head, it is embedded in the ring of the adjustment ring and passes through the oval between the two pads. The two claws protruding from the cavity to one side move along the inner wall of the oval cavity, and the relative distance between the two claws changes accordingly, so as to realize opening or closing. Clamp the workpiece between the two wrench claws. After clamping through the above measures, release the adjusting ring and turn the handle repeatedly with one hand to realize tightening or loosening of the workpiece. The rotation direction of the ratchet head can be converted by the ratchet pulling block adjustment mechanism.

Claims (6)

1. A ratchet wrench, characterized in that it comprises: The handle, which is composed of a central plastic pad and two handle covers connected to both sides of the plastic pad; The ratchet head is connected to the front end of the plastic pad in the center of the handle. Its main body is circular. There are two crescent-shaped pads symmetrically connected in the ring. The two pads protrude to one side, and the outer surface of the protruding part is provided with The radial positioning groove forms an elliptical cavity between the two pads; Two positioning rings are respectively embedded in the radial positioning grooves of the two pads of the ratchet head and can slide along the positioning grooves; The adjustment ring is set on the two lining blocks of the ratchet head and is fixedly connected with the two positioning rings; The adjustment ring cover is connected to the upper surface of the adjustment ring; Two wrench claws are symmetrically embedded in the ring of the adjustment ring and protrude to one side through the oval cavity between the two pads, and the two wrench claws can move inside and outside; Two springs are respectively arranged between the two claws and the adjustment ring; Wrench pad, liner on the inside of the wrench. 2. The ratchet wrench according to claim 1, characterized in that: the handle is provided with an open slot for placing the wrench pad, and the wrench pad is placed in the open slot when not in use. 3. The ratchet wrench according to claim 1, characterized in that: the adjustment ring is symmetrically provided with two sliding slots for inserting the wrench claws, the outer side of the sliding slots penetrates outwards, and the inner side is provided for Bezel for spring seat. 4. The ratchet wrench according to claim 1, characterized in that: the wrench is a three-segment broken-line structural member, including an insert segment for being embedded in the chute on the adjustment ring, a transition A connecting section and an angular wrench section; a spring groove is provided on the insert section, and a magnetic block groove for connecting with the wrench pad is provided at the corner bottom of the angle-shaped wrench section. 5. The ratchet wrench according to claim 1, characterized in that: the wrench pad has a shape and structure adapted to the wrench section of the wrench, and its inner surface for clamping the workpiece is flat or Rack shape. 6. The ratchet wrench according to claim 1, characterized in that: the connecting part of the ratchet head and the handle is provided with a ratchet pulling block adjustment mechanism for adjusting the rotation direction of the ratchet head.

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