CN110091274B

CN110091274B - Ratchet wrench

Info

Publication number: CN110091274B
Application number: CN201910297948.0A
Authority: CN
Inventors: 杨道财; 王伟丽
Original assignee: Individual
Current assignee: Wang Conghai
Priority date: 2019-04-15
Filing date: 2019-04-15
Publication date: 2020-12-08
Anticipated expiration: 2039-04-15
Also published as: CN112123258A; CN110091274A

Abstract

The invention relates to the technical field of mounting and dismounting tools. A ratchet wrench comprises a handle, a wrench head shell, a ratchet tooth matching block, a ratchet outer ring, a matching inner ring and an adjusting component; the adjusting component comprises six hinged matching plates and six adjusting plates; an adjusting plate matching groove is formed in the rear portion of each adjusting plate, an adjusting hinge rod is arranged below the left side of each adjusting plate matching groove, and each hinge matching plate is hinged to each fixing rod; a matching rod is arranged on the left side of the adjusting plate matching groove, and the right side of the adjusting plate matching groove is hinged with the matching inner ring and arranged in the matching annular groove; the front part of the adjusting plate is connected with an arc-shaped rod; the left part of the arc-shaped rod is connected with an adjusting matching head, and an adjusting groove which is concave forwards is arranged on the adjusting matching head; the six adjusting plates are spliced and combined to form a regular hexagon through hole. The invention has the beneficial effects that: the size of the fastener is adjusted correspondingly according to the sizes of different fasteners, so that the fastener is convenient to use and low in cost.

Description

Ratchet wrench

Technical Field

The invention relates to the technical field of mounting and dismounting tools, in particular to a ratchet wrench.

Background

A wrench is a common installation and removal tool that uses the principle of leverage to turn bolts, screws, nuts and other hand tools that thread open or trepan fasteners holding bolts or nuts. The wrench is usually provided with an opening or a trepan for clamping the handle part and applying external force to the handle part so as to screw the bolt or the nut to hold the bolt or the nut, at one end or two ends of the handle part. Wrenches are typically made of carbon structural steel or alloy structural steel.

The caliber of the wrench heads at two ends of the wrench in the prior art is fixed, the size and the size of the wrench heads can not be adjusted, the wrench can only be suitable for fasteners with two specifications, a plurality of wrenches are needed by common wrench tools according to different sizes, the use cost is high, the wrenches are easy to be confused, are difficult to store and lose, can increase the weight when being carried, and are very inconvenient.

The prior art improves and discloses a novel dual purpose spanner as in the chinese utility model patent that publication number is CN203818055U (announcement day is 2014.09.10), its solid wrench, interlude spanner handle and terminal box spanner that includes the anterior segment, solid wrench's upper surface and lower surface and spanner handle are the echelonment, and the contained angle between this spanner handle and the box spanner is 105 degrees, the box spanner bottom surface is equipped with the strengthening rib, the utility model discloses stable in structure, box spanner strengthening rib design, the slope design between spanner handle and the box spanner makes spanner application range enlarge, and solid wrench and spanner handle ladder design are easy and simple to handle, promote operation security. The wrench can only realize dual purposes of fixed size, can not perform corresponding adjustment according to different sizes, is inconvenient to use and has a small application range.

The prior art is improved, for example, a multi-head wrench is disclosed in a chinese patent with publication number CN102601757A (publication number 2017.07.25), which comprises a wrench body, six different wrench heads are uniformly distributed on the wrench body; the central part of the wrench body is provided with a groove; a permanent magnet block is arranged in the groove; the wrench heads positioned on the same straight line are of the same type and different types; the wrench heads are of a solid wrench type, an inner hexagonal wrench head and a dodecagonal wrench head; the multi-head wrench can select the required wrench head according to the type of the acted fastener, is convenient to use, saves time and improves the working efficiency. However, the wrench can only be used for 6 different types of fasteners, and the wrench occupies too large space and is inconvenient to operate during use.

Disclosure of Invention

The purpose of the invention is: aiming at the defects existing in the prior art, the size adjustment is correspondingly carried out according to the sizes of different fasteners, the use of fasteners of various types is solved by only one wrench, the use is convenient, and the cost is low.

For the purpose of the invention, the following technical scheme is adopted for realizing the purpose:

a ratchet wrench comprises a handle, a wrench head shell, a ratchet tooth matching block, a ratchet outer ring, a matching inner ring and an adjusting component; the wrench head shell is fixedly connected with the grip; a matching groove is arranged in the lower part of the wrench head shell, and the ratchet tooth matching block is hinged in the matching groove; the wrench head shell is provided with an annular ratchet wheel matching groove, the ratchet wheel outer ring is arranged in the ratchet wheel matching groove, ratchet wheel teeth are circumferentially arranged on the outer wall of the ratchet wheel outer ring, and the ratchet wheel teeth are matched with the top of the ratchet wheel tooth matching block; the rear part and the front part of the outer ring of the ratchet wheel are respectively provided with a matching annular groove and a toothed ring matching groove, and six fixed rods are circumferentially arranged on the matching annular groove; the matching inner ring is arranged in the matching annular groove through six fixing rods, a toothed ring is arranged at the front part of the matching inner ring, the toothed ring is arranged in the toothed ring matching groove, a toothed shaft neutral gear is arranged on one side of the toothed ring matching groove, and a rotary toothed shaft meshed with the toothed ring is arranged on the toothed shaft neutral gear; the matching inner ring is provided with an adjusting component matching groove, and the adjusting component is arranged in the adjusting component matching groove;

the adjusting component comprises six hinged matching plates and six adjusting plates; an adjusting plate matching groove is formed in the rear portion of each adjusting plate, an adjusting hinge rod is arranged below the left side of the adjusting plate matching groove, one end of each hinge matching plate is hinged to the adjusting hinge rod, and the other end of each hinge matching plate is hinged to each fixing rod; a matching rod is arranged on the left side of the adjusting plate matching groove and matched with an adjacent adjusting plate, and the right side of the adjusting plate matching groove is hinged with the matching inner ring and arranged in the matching annular groove; the front part of the adjusting plate is connected with a strip-shaped arc-shaped rod which is bent downwards; the left part of the arc-shaped rod is connected with an adjusting matching head, and an adjusting groove which is concave forwards is arranged on the adjusting matching head; the arc-shaped rods are arranged in the adjusting grooves of the adjacent adjusting plates, and the six adjusting plates are spliced and combined to form a regular hexagon through hole. The corresponding size adjustment is carried out according to the size of different fasteners, the use of fasteners of various types is solved by only one wrench, the use is convenient, and the cost is low.

Preferably, the front plate and the rear plate of the inner ring are connected through six inner ring connecting rods, six arc-shaped matching grooves which are long-strip-shaped and bent downwards are circumferentially arranged on the front plate and the rear plate of the inner ring, and the six fixing rods are respectively arranged in the six arc-shaped matching grooves. The arc-shaped matching groove through matching the inner ring is beneficial to better matching with the wrench head shell, and the flexibility of rotation between the wrench head shell and the wrench head shell is improved.

Preferably, the ratchet tooth matching block is hinged to the middle of the lower end of the wrench head shell, a matching inclined plane is arranged at the top of the ratchet tooth matching block, and a rebound support plate is arranged at the lower part of the ratchet tooth matching block. Increase the articulated intensity of ratchet tooth cooperation piece, better cooperate with the ratchet tooth to increase the effect that resets through the extension board of kick-backing, strengthen the spanner locking and the function of opening.

Preferably, the top surface of regulating plate be the linearity, the bottom surface of regulating plate is the curve form, the arc pole set up in the outside of ring gear, the rear side of regulating plate and ratchet outer loop rear portion parallel and level. The adjusting plate is better matched with the matching inner ring and can be adjusted through the arc-shaped rod when necessary.

Preferably, the top of the handle is provided with an inverted trapezoidal bump, and the bottom of the wrench head shell is provided with an inverted trapezoidal groove matched with the inverted trapezoidal bump. The connecting strength between the handle and the shell of the wrench head is increased, the use is convenient, and the service life is prolonged.

Compared with the prior art, the invention has the beneficial effects that: the outer ring of the ratchet wheel is matched with the ratchet wheel tooth matching block, so that the outer ring of the ratchet wheel rotates in a single direction, and the fastening piece is convenient to lock or loosen; the outer ring of the ratchet wheel is matched with the inner ring of the matching device, the regular hexagon through hole in the adjusting component is driven to be enlarged or reduced, the adjusting device is suitable for fasteners of different models, and the cost of a plurality of wrenches is saved while the adjusting device is convenient to use.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an exploded view of the present invention.

The labels in the figures are: handle 1, trapezoidal lug 101, wrench head shell 2, mating groove 201, annular ratchet mating groove 202, inverted trapezoidal groove 203, ratchet tooth mating block 3, mating inclined surface 31, rebound support plate 32, ratchet outer ring 4, ratchet tooth 401, mating annular groove 402, gear ring mating groove 403, fixing rod 404, gear shaft neutral stop 405, rotating gear shaft 406, mating inner ring 5, inner ring connecting rod 51, gear ring 501, arc mating groove 502, adjusting component mating groove 503, adjusting component 6, hinge mating plate 61, adjusting plate 62, adjusting plate mating groove 621, adjusting hinge rod 622, mating rod 623, arc rod 624, adjusting mating head 625, adjusting groove 626, regular hexagon through hole 63.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, as indicating orientations or positional relationships, are based on the orientation or positional relationships of the figures, are used for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

As shown in fig. 1 and 2, a ratchet wrench comprises a handle 1, a wrench head housing 2, a ratchet tooth matching block 3, a ratchet outer ring 4, a matching inner ring 5 and an adjusting component 6; spanner head shell 2 and handle 1 fixed connection, the top of handle 1 is provided with inverted trapezoidal lug 101, and the bottom of spanner head shell 2 is provided with and inverts trapezoidal groove 203 of trapezoidal lug 101 matched with, increases the joint strength of handle 1 and spanner head shell 2, convenient to use, increase life. A matching groove 201 is arranged in the lower part of the wrench head shell 2, and the ratchet tooth matching block 3 is hinged in the matching groove 201; ratchet tooth cooperation piece 3 articulates at 2 lower extreme middle parts of spanner head shell, and the top of ratchet tooth cooperation piece 3 is provided with cooperation inclined plane 31, and the lower part of ratchet tooth cooperation piece 3 is provided with resilience extension board 32, and ratchet tooth cooperation piece 3 articulates and increases holistic articulated intensity at the middle part, prevents to damage easily, better cooperatees with ratchet outer loop 4 to increase the effect that resets through resilience extension board 32, strengthen the spanner locking and the function of opening. The wrench head shell 2 is provided with an annular ratchet matching groove 202, and the ratchet outer ring 4 is arranged in the ratchet matching groove 202.

Ratchet teeth 401 are circumferentially arranged on the outer wall of the ratchet outer ring 4, the ratchet teeth 401 are matched with the top of the ratchet tooth matching block 3, one-way rotation of the ratchet outer ring 4 is achieved, and a wrench can better lock or loosen a fastener. The rear part and the front part of the ratchet wheel outer ring 4 are respectively provided with a matching annular groove 402 and a toothed ring matching groove 403, and six fixing rods 404 are circumferentially arranged on the matching annular groove 402; the matching inner ring 5 is arranged in the matching annular groove 402 through six fixing rods 404, and the matching inner ring 5 is driven to rotate through the rotation of the ratchet outer ring 4.

The front plate and the rear plate of the matching inner ring 5 are connected through six inner ring connecting rods 51, six arc matching grooves 502 which are long and bent downwards are circumferentially arranged on the front plate and the rear plate of the matching inner ring 5, and six fixing rods 404 are respectively arranged in the six arc matching grooves 502. The arc-shaped matching groove 502 of the inner ring 5 is matched with the wrench head shell 2 better, and the flexibility of rotation between the two is improved. A gear ring 501 is arranged at the front part of the matching inner ring 5, the gear ring 501 is arranged in a gear ring matching groove 403, a gear shaft neutral stop 405 is arranged at one side of the gear ring matching groove 403, and a rotating gear shaft 406 meshed with the gear ring 501 is arranged on the gear shaft neutral stop 405; adjustment of the adjustment assembly 6 is further facilitated by the toothed ring 501 and the rotating toothed shaft 406, further facilitating use. The matching inner ring 5 is provided with an adjusting component matching groove 503, and the adjusting component 6 is arranged in the adjusting component matching groove 503.

The adjusting assembly 6 comprises six hinged fitting plates 61 and six adjusting plates 62; the top surface of the adjusting plate 62 is linear, and the linear shape is better matched with other adjusting plates 62. The bottom surface of the adjusting plate 62 is curved, and the curved shape is more beneficial to the contraction or the opening of the six adjusting plates 62. The adjusting plate 62 is better matched with the matching inner ring 5 for adjustment. The rear side of the adjusting plate 62 is flush with the rear part of the ratchet wheel outer ring 4, and is better matched with a fastener, so that the use is convenient. An adjusting plate matching groove 621 is formed in the rear portion of each adjusting plate 62, an adjusting hinge rod 622 is arranged below the left side of the adjusting plate matching groove 621, one end of each hinge matching plate 61 is hinged to the adjusting hinge rod 622, and the other end of each hinge matching plate 61 is hinged to each fixing rod 404; the left side of the adjusting plate matching groove 621 is provided with a matching rod 623, and the matching rod 623 is matched with the adjusting plate matching groove 621 of the adjacent adjusting plate 62, so that the transmission performance is improved, and the phenomenon of jamming or incapability of adjusting is reduced. The right side of the adjusting plate matching groove 621 is hinged with the matching inner ring 5 and is arranged in the matching annular groove 402; the front part of the adjusting plate 62 is connected with an arc-shaped rod 624 which is long and is bent downwards; the arc-shaped rod 624 is arc-shaped, so that the transferability and the engagement are better improved. The curved lever 624 is arranged on the outside of the toothed ring 501, and can also be adjusted if necessary by means of the curved lever 624. An adjusting fitting head 625 is connected to the left part of the arc-shaped rod 624, and an adjusting groove 626 which is concave forwards is arranged on the adjusting fitting head 625; the arc-shaped rod 624 is arranged in the adjusting groove 626 of the adjacent adjusting plate 62, so that the transmission performance is improved, and the phenomenon of blockage or incapability of adjusting is reduced. The six adjusting plates 62 are spliced and combined to form a regular hexagon through hole 63.

When the handle is used, the regular hexagon through holes 63 are aligned with the fasteners, the fasteners are arranged in the regular hexagon through holes 63, the handle 1 is rotated clockwise by a user, the ratchet teeth 401 are clamped by the ratchet teeth matching block 3, the ratchet outer ring 4 cannot rotate, the handle 1 and the ratchet outer ring 4 rotate together, so that the matching inner ring 5 is driven to rotate clockwise by the fixing rod 404, the toothed ring 501 on the matching inner ring 5 is matched with the rotating toothed shaft 406 to rotate, the adjusting plate 62 is driven to rotate clockwise by the inner ring connecting rod 51 on the matching inner ring 5, the area of the regular hexagon through holes 63 is reduced, the size matched with the fasteners is reduced, the fasteners are locked, the fasteners can be screwed to a fixed state by continuing rotating the handle 1 clockwise, the handle 1 is rotated anticlockwise after screwing is completed, the ratchet teeth 401 are rotated to drive the adjusting hinged plate 61 to rotate, the adjusting plate is driven to be loosened, and the, the wrench is removed from the fastener. When the fastener is removed, the reverse side of the wrench is only required to be aligned with the fastener, and the fastener can be loosened by the same action principle. The installation and the dismantlement of different model fasteners can be accomplished to only needing a spanner, easy operation, convenient to use.

In conclusion, the ratchet wheel outer ring 4 is matched with the ratchet wheel tooth matching block 3, so that the ratchet wheel outer ring 4 rotates in a single direction, and a fastening piece is convenient to lock or loosen; through ratchet outer loop 4 and cooperation inner ring 5 cooperatees, drives the increase of regular hexagon through-hole 63 in adjusting part 6 or dwindles, is applicable to the fastener of different models, and the cost that needs many spanners has been saved when convenient to use.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention, including any reference to the above-mentioned embodiments. Various modifications to these embodiments will be readily apparent to those skilled in the art. The general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A ratchet wrench is characterized by comprising a handle (1), a wrench head shell (2), a ratchet tooth matching block (3), a ratchet outer ring (4), a matching inner ring (5) and an adjusting component (6); the wrench head shell (2) is fixedly connected with the grip (1); a matching groove (201) is arranged in the lower part of the wrench head shell (2), and the ratchet wheel tooth matching block (3) is hinged in the matching groove (201); an annular ratchet wheel matching groove (202) is formed in the wrench head shell (2), the ratchet wheel outer ring (4) is arranged in the ratchet wheel matching groove (202), ratchet wheel teeth (401) are circumferentially arranged on the outer wall of the ratchet wheel outer ring (4), and the ratchet wheel teeth (401) are matched with the top of the ratchet wheel tooth matching block (3); the rear part and the front part of the ratchet wheel outer ring (4) are respectively provided with a matching annular groove (402) and a toothed ring matching groove (403), and six fixing rods (404) are circumferentially arranged on the matching annular groove (402); the matching inner ring (5) is arranged in the matching annular groove (402) through six fixing rods (404), a toothed ring (501) is arranged at the front part of the matching inner ring (5), the toothed ring (501) is arranged in a toothed ring matching groove (403), a toothed shaft neutral gear (405) is arranged on one side of the toothed ring matching groove (403), and a rotary toothed shaft (406) meshed with the toothed ring (501) is arranged on the toothed shaft neutral gear (405); an adjusting component matching groove (503) is formed in the matching inner ring (5), and the adjusting component (6) is arranged in the adjusting component matching groove (503);

the adjusting component (6) comprises six hinged matching plates (61) and six adjusting plates (62); an adjusting plate matching groove (621) is formed in the rear portion of each adjusting plate (62), an adjusting hinge rod (622) is arranged below the left side of the adjusting plate matching groove (621), one end of each hinge matching plate (61) is hinged to the adjusting hinge rod (622), and the other end of each hinge matching plate (61) is hinged to each fixing rod (404); a matching rod (623) is arranged on the left side of the adjusting plate matching groove (621), the matching rod (623) is matched with the adjusting plate matching groove (621) of the adjacent adjusting plate (62), and the right side of the adjusting plate matching groove (621) is hinged with the matching inner ring (5) and arranged in the matching annular groove (402); the front part of the adjusting plate (62) is connected with an arc-shaped rod (624) which is long and is bent downwards; an adjusting and matching head (625) is connected to the left part of the arc-shaped rod (624), and an adjusting groove (626) which is concave forwards is arranged on the adjusting and matching head (625); the arc-shaped rod (624) is arranged in an adjusting groove (626) of an adjacent adjusting plate (62), and the six adjusting plates (62) are spliced and combined to form a regular hexagon through hole (63).

2. The ratchet wrench as claimed in claim 1, wherein the front plate and the rear plate of the mating inner ring (5) are connected by six inner ring connecting rods (51), six arc-shaped mating grooves (502) which are long and bent downwards are circumferentially formed in the front plate and the rear plate of the mating inner ring (5), and the six fixing rods (404) are respectively arranged in the six arc-shaped mating grooves (502).

3. The ratchet wrench as claimed in claim 1, wherein the ratchet tooth fitting block (3) is hinged to the middle of the lower end of the wrench head housing (2), the top of the ratchet tooth fitting block (3) is provided with a fitting inclined surface (31), and the lower part of the ratchet tooth fitting block (3) is provided with a rebound support plate (32).

4. The ratchet wrench as claimed in claim 1, wherein the top surface of the adjustment plate (62) is linear, the bottom surface of the adjustment plate (62) is curved, the curved rod (624) is disposed outside the gear ring (501), and the rear side of the adjustment plate (62) is flush with the rear portion of the ratchet outer ring (4).

5. The ratchet wrench as claimed in claim 1, wherein the top of the handle (1) is provided with an inverted trapezoidal protrusion (101), and the bottom of the wrench head housing (2) is provided with an inverted trapezoidal groove (203) which is matched with the inverted trapezoidal protrusion (101).