CN110091274A - a ratchet wrench - Google Patents

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

a ratchet wrench

technical field

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

Background technique

A wrench is a commonly used installation and removal tool that uses the principle of leverage to turn bolts, screws, nuts, and other hand tools that are threaded to hold the openings or casings of bolts or nuts. The wrench is usually formed with a clamping handle at one or both ends of the handle to apply an external force to the handle to twist the bolt or nut to hold the opening or sleeve of the bolt or nut. Wrenches are usually made of carbon structural steel or alloy structural steel.

The wrench under the prior art, the caliber of the wrench heads at both ends is a fixed caliber, the size cannot be adjusted, and it can only be applied to fasteners of two specifications. Usually, the wrench tool needs multiple wrenches according to different sizes, and multiple use costs High, and the wrench is easy to clutter, not easy to store, easy to lose, and it will increase the weight when carrying, which is very inconvenient.

Improvement of the existing technology, such as a Chinese utility model patent with the publication number CN203818055U (announcement date: 2014.09.10), discloses a new type of dual-purpose wrench, which includes a front wrench, a middle wrench handle and a ring wrench at the end. The upper surface and the lower surface of the wrench and the wrench handle are in a stepped shape. The angle between the wrench handle and the ring wrench is 105 degrees. The bottom surface of the ring wrench is provided with reinforcing ribs. The rib design, the inclined design between the wrench handle and the ring wrench expands the range of use of the wrench, and the stepped design of the wrench and the wrench handle makes the operation easy and improves the operation safety. The wrench can only be used with a fixed size and can not be adjusted correspondingly according to different sizes, so it is inconvenient to use and has a small range of use.

Improvement of the existing technology. For example, the Chinese invention patent with the publication number CN102601757A (announcement date is 2017.07.25) discloses a multi-head wrench, which includes a wrench body, and six different wrench heads are evenly distributed on the wrench body; There is a groove in the center of the wrench body; a permanent magnet block is arranged in the groove; the wrench heads on the same straight line are of the same type and different models; the wrench head type is a dead wrench type wrench Head, hexagonal wrench head and twelve-point wrench head; the multi-head wrench of the present invention can select the required wrench head according to the type of fastener being used, which is convenient to use, saves time, and improves work efficiency. However, the wrench can only be used for 6 different types of fasteners, and the wrench occupies too much space, making it inconvenient to operate.

Contents of the invention

The purpose of the present invention is to solve the shortcomings of the prior art, provide corresponding size adjustment according to the size of different fasteners, and only need one wrench to solve the use of various types of fasteners, which is convenient to use and low in cost.

For the purpose of the present invention, adopt following technical scheme to realize:

A ratchet wrench, the wrench includes a handle, a wrench head shell, a ratchet tooth matching block, a ratchet outer ring, a matching inner ring and an adjustment assembly; the wrench head shell is fixedly connected to the handle; the lower part of the wrench head shell is provided with Fitting groove, the ratchet tooth fitting block is hinged in the fitting groove; the wrench head shell is provided with an annular ratchet fitting groove, the ratchet outer ring is arranged in the ratchet fitting groove, and the outer wall of the ratchet outer ring is circumferentially provided with Ratchet teeth, the ratchet teeth are matched with the top of the ratchet tooth matching block; the rear and front parts of the outer ring of the ratchet are respectively provided with a matching ring groove and a gear ring matching groove, and six fixing rods are arranged on the upper circumference of the matching ring groove; The matching inner ring is set in the matching annular groove through six fixing rods, the front part of the matching inner ring is provided with a gear ring, the gear ring is set in the gear ring matching groove, and one side of the gear ring matching groove is provided with The gear shaft is neutral, and the gear shaft neutral gear is provided with a rotating gear shaft meshing with the gear ring; the matching inner ring is provided with an adjustment assembly matching groove, and the adjustment assembly is arranged in the adjustment assembly matching groove;

The adjustment assembly includes six hinged matching plates and six adjusting plates; the rear part of each adjusting plate is provided with an adjusting plate matching groove, and the left side of the adjusting plate matching groove is provided with an adjusting hinge rod. One end of each hinged matching plate is hinged with the adjusting hinge rod, and the other end of each hinged matching plate is hinged on each fixed rod; the left side of the matching groove of the adjusting plate is provided with a matching rod, and the matching rod is connected to the adjacent A piece of adjusting plate is matched, and the right side of the matching groove of the adjusting plate is hingedly arranged in the matching annular groove with the inner ring; the front part of the adjusting plate is connected with a long and downwardly curved arc rod; the arc The left part of the shaped rod is connected with an adjustment fitting head, and the adjustment fitting head is provided with a forward concave adjustment groove; the arc rod is arranged in the adjustment groove of an adjacent adjustment plate, and the six adjustment The plates are spliced together to form regular hexagonal through holes. According to the size of different fasteners, the corresponding size adjustment is carried out, and only one wrench is needed to solve the use of various types of fasteners, which is convenient to use and low in cost.

As a preference, the front plate and the rear plate of the matching inner ring are connected by six inner ring connecting rods, and the front plate and the rear plate of the matching inner ring are circumferentially provided with six elongated and downwardly curved arcs. Cooperating slots, the six fixing rods are respectively arranged in the six arc-shaped cooperating slots. By matching the arc-shaped matching groove of the inner ring, it is beneficial to better match with the shell of the wrench head and improve the flexibility of rotation between them.

Preferably, the ratchet tooth matching block is hinged at the middle part of the lower end of the wrench head housing, the top of the ratchet tooth matching block is provided with a matching inclined surface, and the lower part of the ratchet tooth matching block is provided with a rebound support plate. Increase the hinge strength of the ratchet tooth matching block, better match with the ratchet teeth, and increase the reset effect through the rebound support plate, and enhance the locking and opening functions of the wrench.

Preferably, the top surface of the adjustment plate is linear, the bottom surface of the adjustment plate is curved, the arc rod is arranged on the outside of the gear ring, and the rear side of the adjustment plate is in contact with the rear of the ratchet outer ring. flush. The adjustment plate is better adapted to the mating inner ring, and can also be adjusted by means of a curved rod if necessary.

Preferably, the top of the handle is provided with an inverted trapezoidal protrusion, and the bottom of the wrench head housing is provided with an inverted trapezoidal groove matching the inverted trapezoidal protrusion. Increase the connection strength between the grip and the wrench head shell, which is easy to use and increases the service life.

Compared with the prior art, the beneficial effect of the present invention is: through the cooperation of the ratchet outer ring and the ratchet tooth matching block, the ratchet outer ring can rotate in one direction, which facilitates the locking or loosening of fasteners; The inner ring cooperates to drive the adjustment of the regular hexagonal through hole in the adjustment component to increase or decrease, which is suitable for different types of fasteners, and is convenient to use while saving the cost of needing multiple wrenches.

Description of drawings

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

Figure 2 is an exploded view of the present invention.

The marks in the accompanying drawings are: handle 1, trapezoidal bump 101, wrench head shell 2, fitting groove 201, annular ratchet fitting groove 202, inverted trapezoidal groove 203, ratchet tooth mating block 3, mating inclined surface 31, rebound support Plate 32, ratchet outer ring 4, ratchet teeth 401, matching ring groove 402, gear ring matching groove 403, fixed rod 404, gear shaft neutral gear 405, rotating gear shaft 406, matching inner ring 5, inner ring connecting rod 51, gear ring 501, arc fitting groove 502, adjusting assembly fitting groove 503, adjusting assembly 6, hinged fitting plate 61, adjusting plate 62, adjusting plate fitting groove 621, adjusting hinged rod 622, fitting rod 623, arc rod 624, adjusting fitting head 625 , adjustment groove 626 , regular hexagonal through hole 63 .

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

In describing the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", " The orientation or positional relationship indicated by "outside" and other indications are based on the orientation or positional relationship in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, use a specific orientation construction and operation, therefore, should not be construed as limiting the invention.

As shown in Figures 1 and 2, a ratchet wrench includes 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 adjustment assembly 6; the wrench head housing 2 It is fixedly connected with the handle 1, the top of the handle 1 is provided with an inverted trapezoidal bump 101, and the bottom of the wrench head shell 2 is provided with an inverted trapezoidal groove 203 matching with the inverted trapezoidal bump 101, and the handle 1 and the wrench head shell are added 2 high connection strength, easy to use and increase service life. The lower part of the wrench head housing 2 is provided with a matching groove 201, and the ratchet tooth matching block 3 is hinged in the matching groove 201; the ratchet tooth matching block 3 is hinged at the middle part of the lower end of the wrench head housing 2, and the top of the ratchet tooth matching block 3 is provided with a matching inclined surface 31. The lower part of the ratchet tooth mating block 3 is provided with a rebound support plate 32, and the ratchet tooth mating block 3 is hinged in the middle to increase the overall hinge strength to prevent easy damage, better cooperate with the ratchet outer ring 4, and through rebound The support plate 32 increases the reset effect and enhances the locking and opening functions of the wrench. The wrench head housing 2 is provided with an annular ratchet fitting groove 202 , and the ratchet outer ring 4 is arranged in the ratchet fitting groove 202 .

The outer wall of the ratchet outer ring 4 is provided with ratchet teeth 401 in the circumferential direction, and the ratchet teeth 401 cooperate with the top of the ratchet tooth matching block 3 to realize the unidirectional rotation of the ratchet outer ring 4, which is convenient for the wrench to better lock the fasteners or let go. The rear and the front of the ratchet outer ring 4 are respectively provided with a matching annular groove 402 and a toothed ring matching groove 403, and the matching annular groove 402 is provided with six fixing rods 404 in the upper direction; In the slot 402, the outer ring 4 of the ratchet is rotated to drive and cooperate with the inner ring 5 to rotate.

The front plate and rear plate of the matching inner ring 5 are connected by six inner ring connecting rods 51, and the front plate and the rear plate of the matching inner ring 5 are circumferentially provided with six elongated and downwardly curved arc-shaped matching grooves 502 , the six fixing rods 404 are respectively arranged in the six arc-shaped fitting grooves 502 . Matching the arc-shaped matching groove 502 of the inner ring 5 is beneficial to better matching with the wrench head housing 2 and improving the flexibility of rotation between the two. Cooperate with the front portion of the inner ring 5 to be provided with a gear ring 501, the gear ring 501 is arranged in the gear ring matching groove 403, and the side of the gear ring matching groove 403 is provided with a gear shaft neutral gear 405, and the gear shaft neutral gear 405 is provided with a 501 engaged with the rotating pinion 406; through the gear ring 501 and the rotating pinion 406, the adjustment of the adjustment assembly 6 is further facilitated, which is further convenient for 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 includes six hinged fitting plates 61 and six adjusting plates 62 ; The bottom surface of the adjustment plates 62 is curved, which is more conducive to the contraction or opening of the six adjustment 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 portion of the ratchet outer ring 4, which is better matched with the fastener and is easy to use. The rear portion of each adjusting plate 62 is provided with an adjusting plate matching groove 621, and the left side of the adjusting plate matching groove 621 is provided with an adjusting hinge rod 622, and one end of each hinged matching plate 61 is hinged with the adjusting hinge rod 622, and each hinged The other end of matching plate 61 is hinged on every fixed rod 404; Transmission, reducing the phenomenon of stuck or unable to adjust. The right side of the matching groove 621 of the adjusting plate is hingedly arranged in the matching ring groove 402 with the inner ring 5; the front portion of the adjusting plate 62 is connected with a long and downwardly curved arc rod 624; the arc rod 624 is arc-shaped. The shape can better improve the transferability and cohesion. The arc rod 624 is arranged on the outer side of the gear ring 501, and can also be adjusted through the arc rod 624 if necessary. The left part of the arc rod 624 is connected with an adjustment fitting head 625, and the adjustment fitting head 625 is provided with a forwardly concave adjustment groove 626; the arc rod 624 is arranged in the adjustment groove 626 of an adjacent adjustment plate 62 to improve Transmission, reducing the phenomenon of stuck or unable to adjust. The six adjustment plates 62 are spliced together to form a regular hexagonal through hole 63 .

During use, the regular hexagonal through hole 63 is aligned with the fastener, so that the fastener is in the regular hexagonal through hole 63, and the user rotates the handle 1 clockwise, and the ratchet tooth 401 is locked by the ratchet tooth mating block 3 Hold, so that the ratchet outer ring 4 cannot rotate, the handle 1 and the ratchet outer ring 4 rotate together, so that the fixed rod 404 drives the cooperating inner ring 5 to rotate clockwise, and the gear ring 501 on the coordinating inner ring 5 is in phase with the rotating gear shaft 406 Cooperate with the rotation, cooperate with the inner ring connecting rod 51 on the inner ring 5 to drive the adjustment plate 62 to rotate clockwise to reduce the area of the regular hexagonal through hole 63 to the size matching the fastener so as to lock the fastener. Continue to rotate the handle 1 clockwise to tighten the fastener to a fixed state. After the tightening is completed, you only need to rotate the handle 1 counterclockwise, so that the ratchet teeth 401 rotate to drive the adjustment hinge plate 61 to rotate, and the adjustment plate is loosened and The area of the regular hexagonal through hole 63 is enlarged, and the wrench is taken off from the fastener. When taking off the fastener, it is only necessary to align the opposite side of the wrench to the fastener, and the same action principle can be used to loosen the fastener. Only one wrench is needed to complete the installation and disassembly of different types of fasteners, which is easy to operate and easy to use.

In summary, through the cooperation of the ratchet outer ring 4 and the ratchet tooth matching block 3, the ratchet outer ring 4 can rotate in one direction, which facilitates the locking or loosening of fasteners; , driving the adjustment of the hexagonal through hole 63 in the adjustment assembly 6 to increase or decrease, suitable for different types of fasteners, easy to use and save the cost of needing multiple wrenches.

The foregoing is a description of the embodiments of the present invention, and through the above descriptions of the disclosed embodiments, those skilled in the art can implement or use the present invention. Various modifications to these examples will be 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. Therefore, the present invention will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel points disclosed herein.

Claims (5)

1. A ratchet wrench, characterized in that the wrench includes a grip (1), a wrench head housing (2), a ratchet tooth matching block (3), a ratchet outer ring (4), a matching inner ring (5) and an adjustment Assembly (6); the wrench head housing (2) is fixedly connected with the handle (1); the lower part of the wrench head housing (2) is provided with a matching groove (201), and the ratchet tooth matching block (3) is hinged In the matching groove (201); the wrench head shell (2) is provided with an annular ratchet matching groove (202), the ratchet outer ring (4) is arranged in the ratchet matching groove (202), and the ratchet outer ring (4) The outer wall of the outer wall of the ratchet is provided with ratchet teeth (401), and the ratchet teeth (401) are matched with the top of the ratchet tooth matching block (3); the rear and front parts of the ratchet outer ring (4) are respectively provided with matching rings Groove (402) and gear ring matching groove (403), and six fixing rods (404) are arranged in the circumferential direction of the matching ring groove (402); the matching inner ring (5) is arranged on the matching In the annular groove (402), a toothed ring (501) is arranged on the front part of the matching inner ring (5). ) is provided with a pinion neutral gear (405) on one side, and a rotating pinion shaft (406) meshing with the gear ring (501) is arranged on the pinion neutral gear (405); An adjustment component matching groove (503) is provided, and the adjustment component (6) is arranged in the adjustment component matching groove (503); The adjustment assembly (6) includes six hinged matching plates (61) and six adjusting plates (62); the rear part of each adjusting plate (62) is provided with an adjusting plate matching groove (621), adjusting An adjustment hinge rod (622) is arranged on the left side of the plate fitting groove (621), and one end of each hinge fitting plate (61) is hinged to the adjustment hinge rod (622), and each hinge fitting plate (61) The other end is hinged on each fixed rod (404); a matching rod (623) is arranged on the left side of the matching groove (621) of the adjusting plate, and the matching rod (623) is connected with the adjacent adjusting plate (62). The matching groove (621) of the adjusting plate is matched, and the right side of the matching groove (621) of the adjusting plate is hingedly arranged in the matching ring groove (402) with the matching inner ring (5); the front part of the adjusting plate (62) is connected with a long A strip-shaped arc-shaped rod (624) bent downward; the left part of the arc-shaped rod (624) is connected with an adjustment fitting head (625), and the adjustment fitting head (625) is provided with a forward concave the adjustment groove (626); the arc rod (624) is set in the adjustment groove (626) of an adjacent adjustment plate (62), and the six adjustment plates (62) are spliced and combined to form a regular hexagonal hole (63). 2. A ratchet wrench according to claim 1, characterized in that, the front plate and rear plate of the matching inner ring (5) are connected by six inner ring connecting rods (51), and the matching inner ring (5) Both the front plate and the rear plate are circumferentially provided with six elongated arc-shaped fitting grooves (502) that are bent downwards, and the six fixing rods (404) are respectively arranged in the six arc-shaped fitting grooves (502) . 3. A ratchet wrench according to claim 1, characterized in that the ratchet tooth fitting block (3) is hinged at the middle of the lower end of the wrench head housing (2), and the top of the ratchet tooth fitting block (3) is provided with Cooperating with the inclined surface (31), the lower part of the ratchet tooth matching block (3) is provided with a rebound support plate (32). 4. A ratchet wrench according to claim 1, characterized in that, the top surface of the adjustment plate (62) is linear, the bottom surface of the adjustment plate (62) is curved, and the arc rod (624) is arranged on the outer side of the gear ring (501), and the rear side of the adjustment plate (62) is flush with the rear part of the ratchet outer ring (4). 5. A ratchet wrench according to claim 1, characterized in that, the top of the handle (1) is provided with an inverted trapezoidal bump (101), and the bottom of the wrench head housing (2) is provided with There is an inverted trapezoidal groove (203) matched with the inverted trapezoidal protrusion (101).