CN218658734U - Caliber-adjustable wrench - Google Patents

Abstract

The utility model discloses a wrench with adjustable caliber, which can clamp each surface of a fastener (such as a hexagonal fastener) by arranging a plurality of clamping pieces, thereby avoiding the phenomenon that the nut is easy to slip, deform or even damage due to uneven stress; the clamping piece is driven by the regulator, so that the caliber of the wrench is adjusted to be suitable for fasteners with different sizes; the clamping device is provided with a holding part, the clamping pieces are driven by the regulator to move simultaneously, and the regulator has a self-locking function, so that the clamping stability and strength can be improved, and the damage to the fastening piece caused by slipping when the fastening piece is rotated can be avoided; set the holder to trapezoidal shape, can guarantee the stability that holder interact removed, lean on self shape to provide drive power each other between the holder, need not other driving medium supplementary, reduced the part quantity of spanner.

Description

Caliber-adjustable wrench

Technical Field

The utility model relates to a hand tool technical field, concretely relates to spanner of adjustable bore.

Background

In the field of maintenance and repair of equipment, mechanical wrenches are used whenever necessary, most of which are fixed, and of which, although a small number, are adjustable wrenches, which are mostly the two faces of a clamping nut, commonly known as crescent wrenches, which employ a fixed lip and a worm-actuated movable lip, the movable side being moved towards or away from the fixed side by manually driving the worm, for example by using a thumb, in order to effectively grip the two sides or facets of the fastener. Therefore, the nut is easy to slip and deform or even damage due to uneven stress, so that the nut is difficult to dismount, parts can be damaged when the nut is dismounted by cutting or violently, and great troubles are brought to simple dismounting. There is also a closed end wrench of the jaw type which has two handles and employs six jaws which are squeezed together to actuate the jaws to clamp a fastener around the fastener, like a pair of pliers, however the strength of the grip of such a wrench is dependent on the strength of the handles and the wrench is not suitable for use with relatively tight fasteners which are tightened. Fixed spanner also is sleeve type, need change different spanners according to the nut bolt model of difference when using, and is more troublesome when using, because sleeve quantity model is more, does not get rid of and has the telescopic condition of losing of part model, can not find corresponding model also more troublesome, causes waste time, and work efficiency is low. Accordingly, there is a continuing need for improvements in hand wrenches that address the deficiencies of the tools described above.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the problem that prior art exists, provide a suitability good, multiaspect contact, convenient operation are simple and press from both sides the stable adjustable bore's spanner, and this adjustable bore's spanner sets up a plurality of holders through adjusting spanner centre gripping bore, can provide the centre gripping for the multiaspect fastener of various sizes (for example hexagon fastener), and can firmly grasp all faces and the angle of fastener. Through the self-locking of the adjuster, stable clamping can be provided, the fastener is prevented from being damaged by slipping, and the integrity of the used fastener is ensured; the handle is arranged, so that the operation is simple and convenient, and the maximum rotating application range can be provided.

In order to achieve the above object, the utility model adopts the following technical scheme: the fastener combining part comprises an adjuster and a clamping piece, and the adjuster adjusts the caliber of the clamping piece; the fastener joint portion still keeps the ware including keeping, keeps the ware inside and slides and be provided with the holder, and the holder comprises initiative holder and passive holder, and the cross-section of holder is trapezoidal, and the mutual butt of a lateral surface of holder and the bottom surface of adjacent holder, regulator drive the initiative holder removes, and the initiative holder promotes and the passive holder syntropy removal of initiative holder lateral surface butt.

Through the technical scheme, the spanner with the adjustable caliber can clamp each surface of a fastener (such as a hexagonal fastener) by arranging the clamping pieces in the retainer, so that the phenomenon that the nut is easy to slip, deform and even damage due to uneven stress is avoided; the clamping piece is driven by the regulator, so that the caliber of the wrench is adjusted to be suitable for fasteners with different sizes; the clamping part is driven to move simultaneously through the regulator, and the regulator has a self-locking function, so that the clamping stability and strength can be improved, and the damage to the fastening piece caused by slipping when the fastening piece is rotated is avoided; set the holder to trapezoidal shape, adjacent holder butt each other end to end can ensure the stability that adjacent holder interact removed, leans on self shape interact between the holder simultaneously, need not other driving mediums supplementary, has reduced the part quantity of spanner.

As a further improvement to the above technical solution, the adjuster includes a driving member rotatably disposed on the fastener engaging portion and a sliding member fixedly connected to the active clamp member, the driving member driving the sliding member to reciprocate in the holder.

As a further improvement to the above technical solution, in order to ensure the self-locking performance of the adjuster, the driving member includes a worm wheel and a pin, and the worm wheel is rotatably disposed on the fastener joint portion through the pin; the sliding piece is a worm, one side of the worm is fixedly connected with the driving clamping piece, and the other side of the worm is provided with a tooth row meshed with the worm wheel.

As a further improvement to the technical scheme, the number of the clamping pieces is six, and all the clamping pieces jointly form a regular hexagon caliber.

As a further improvement to the above technical solution, in order to prevent the clamping member from jamming during the adjustment process, the holder is provided with a sliding rail or a sliding groove, and one end of the clamping member is slidably disposed in the sliding rail or the sliding groove.

As a further improvement to the above technical solution, a cover plate is provided above the holder, and the cover plate is fastened to the holder by screws.

As a further improvement to the above technical scheme, a rectangular hole is formed in the fastener combining part, and the worm wheel is rotatably arranged in the rectangular hole.

As a further improvement to the technical scheme, in order to drive the clamping piece and simultaneously ensure the stability in clamping of the clamping piece, the worm is fixedly connected with one side end face of the driving clamping piece.

As a further improvement to the technical scheme, in order to prevent the clamping piece from being blocked in the adjusting process, the inner surface of the retainer is hexagonal, the upper end face and the lower end face of the cover plate are provided with sliding rails or sliding grooves, and one end of the clamping piece is arranged in the sliding rails or the sliding grooves in a sliding mode.

As a further improvement to the technical scheme, a sliding groove is formed in the side face, corresponding to the rectangular hole, of the fastener combining portion, and the worm penetrates through the sliding groove to be meshed with the worm wheel.

Compared with the prior art, the beneficial effects of the utility model are that:

the caliber-adjustable wrench can clamp each surface of a fastener (such as a hexagonal fastener) by arranging a plurality of clamping pieces in the retainer, so that the phenomenon that the nut is easy to slip, deform and even damage due to uneven stress is avoided; the clamping piece is driven by the regulator, so that the caliber of the wrench is adjusted to be suitable for fasteners with different sizes; the clamping part is driven to move simultaneously through the regulator, and the regulator has a self-locking function, so that the clamping stability and strength can be improved, and the damage to the fastening piece caused by slipping when the fastening piece is rotated is avoided; the clamping pieces are arranged in a trapezoidal shape, and the adjacent clamping pieces are abutted end to end, so that the stability of interaction and movement of the adjacent clamping pieces can be ensured, and meanwhile, the clamping pieces interact by self shapes without the assistance of other transmission parts, so that the number of parts of the wrench is reduced; the retainer is internally provided with a slide rail, one end of the clamping piece is arranged in the slide rail in a sliding way, so that the sliding smoothness of the clamping piece is ensured, and the clamping of the clamping piece in the adjusting process is prevented.

Drawings

FIG. 1 is a schematic structural diagram of an adjustable-caliber wrench in this embodiment;

fig. 2 is a schematic view of a wrench with an adjustable caliber in this embodiment, in which fig. (a) is a schematic view of a reduced caliber state, fig. (b) is a schematic view of an enlarged caliber state, and fig. (c) is a schematic view of a fully expanded caliber state;

FIG. 3 is a schematic view of the fully expanded state of the wrench with adjustable wrench caliber in this embodiment;

FIG. 4 is a schematic view of an exploded structure of the adjustable-caliber wrench of this embodiment;

fig. 5 is a schematic top view of the adjustable-caliber wrench according to the present embodiment, in which fig. (a) is a schematic diagram of a completely expanded caliber state, fig. (b) is a schematic diagram of a reduced caliber state, and fig. (c) is a schematic diagram of a completely closed caliber state;

FIG. 6 is a schematic view of the active clamp structure;

fig. 7 is a schematic view of a passive clamp structure.

In the figure: 1. a fastener engaging portion; 2. a passive clamp; 3. a pin shaft; 4. a worm gear; 5. an active clamping member; 6. a cover plate screw; 7. a cover plate; 8. the caliber; 9. a grip portion; 10. a worm; 11. a rectangular hole.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Examples

As shown in fig. 1 to 7, the present embodiment provides a wrench with an adjustable caliber, the wrench includes a holding portion 9 and a fastener joint portion 1, the fastener joint portion 1 is fixedly installed at one end of the holding portion 9, the fastener joint portion 1 includes an adjuster and a clamping member, the adjuster can adjust the clamping member, so as to adjust the caliber 8 of the fastener joint portion 1, a holder for accommodating the clamping member is further disposed on a body of the fastener joint portion 1, the clamping member is slidably disposed in the holder, as shown in fig. 6 to 7, a transverse surface of the clamping member is trapezoidal, as shown in fig. 1, a side end surface of the clamping member abuts against a bottom surface of an adjacent clamping member, a top end surface of the clamping member faces a body of the fastener joint portion 1, the clamping member includes an active clamping member 5 and a passive clamping member 2, the adjuster drives the active clamping member 5 to reciprocate, the active clamping member 5 pushes the adjacent passive clamping member 2 abutting against the side end surface of the active clamping member 5 to move in the same direction, and the passive clamping member 2 pushes the adjacent passive clamping member 2 to move in the same direction. Alternatively, the fastener joint portion 1 may be fixedly installed at one end of the grip portion 9 by a fixing means such as welding, or the like, or the fastener joint portion 1 may be integrally formed with the grip portion 9, and integrally manufactured by a die casting or powder metallurgy manufacturing process.

Further, in some embodiments, an adjuster may be provided that includes a driving member rotatably disposed on the fastener engaging portion 1 and a sliding member fixedly connected to the active clamp, the driving member driving the sliding member to reciprocate in the holder.

Specifically, in some embodiments, as shown in fig. 2 to 4, the driving member includes a worm wheel 4, a worm 10, and a pin 3, the worm wheel is centrally provided with a through hole, the pin 3 passes through the through hole to rotatably connect the worm wheel 4 to the fastener joint 1, the sliding member is provided as the worm 10, one side of the worm 10 is fixedly connected with the driving clamp 5, and the other side of the worm 10 is provided with a tooth row meshed with the worm wheel 4. Alternatively, one side of the worm 10 is fixedly connected with the active clamping member 5 by welding, riveting or the like, or the worm 10 and the active clamping member 5 are integrally formed and manufactured integrally by a die casting or powder metallurgy manufacturing process.

Preferably, as shown in fig. 3-4, the fastener joint 1 is provided with a rectangular hole 11, the worm wheel 4 is rotatably disposed in the rectangular hole 11, a sliding slot is disposed on a side surface of the active clamping member 5 corresponding to the rectangular hole 11, and the worm 10 passes through the sliding slot to engage with the worm wheel 4.

Further, in some embodiments, the number of clamps can be set according to the needs of different types of fasteners, for example, the clamps can be set to four to accommodate fasteners with quadrilateral heads, five to accommodate fasteners with pentagonal heads, and six to accommodate fasteners with hexagonal heads. No matter how many the clamping pieces are arranged, the calibers 8 formed between the clamping pieces are matched with the tool combination part of the fastener, for example, the calibers of the regular hexagon formed between the clamping pieces are convenient for the matching of the hexagon bolt or nut.

Further, in some embodiments, the middle of the retainer has a cavity with openings on the upper and lower end surfaces, the shape of the cavity and the openings is the same as the shape of the caliber 8, the diameter of the openings on the upper and lower end surfaces of the retainer is smaller than the size of the end surface of the retainer, so that partial baffles are arranged on the upper and lower end surfaces of the retainer, the inner surfaces of the upper and lower baffles are provided with slide rails or slide grooves, one side end of the clamping piece is slidably arranged on or in the slide rails or the slide grooves

Preferably, a cavity with openings on the upper and lower end surfaces is arranged in the middle of the retainer, the shape of the cavity is the same as that of the caliber 8, a cover plate 7 is arranged above the retainer, the cover plate 7 is fixed on the upper and lower end surfaces of the retainer through a cover plate screw 6, the opening with the same shape as that of the caliber 8 is arranged in the middle of the cover plate 7, a sliding rail or a sliding groove is arranged on the inner surface of the upper and lower cover plates 7, and one side end of the clamping piece is slidably arranged on the sliding rail or in the sliding groove.

Further, the fastener joint 1 may be provided in an arbitrary shape in appearance, for example, may be provided in a square, a circle, or the like.

The working principle of the wrench in this embodiment is, as shown in fig. 5, when the wrench is in a completely unfolded state as shown in fig. (a), and the worm wheel 4 is rotated counterclockwise by the hand of the operator, the worm wheel 4 drives the worm 10 to slide towards the rectangular hole, so as to drive the active clamping piece 5 to move in the same direction, the lower end surface of the active clamping piece 5 drives the adjacent passive clamping piece to move, the lower end surface of the adjacent passive clamping piece drives the adjacent passive clamping piece to move, and the driving is circulated in this way, as shown in fig. (b), and finally the driving clamping pieces are together gathered towards the center of the fastener combining part 1, so as to reduce the caliber 8; as shown in fig. 2, when the worm wheel 4 is driven clockwise, as shown in fig. (a), the worm wheel 4 drives the worm 10 to slide outwards away from the rectangular hole, and further drives the driving clamping piece 5 to move in the same direction, one side end face of the driving clamping piece 5 abuts against the bottom end face of the adjacent driven clamping piece, and further moves through the adjacent driven clamping piece, the side end face of the adjacent driven clamping piece drives the adjacent driven clamping piece to move, and the circular driving is performed, as shown in fig. (b), and finally the driving clamping piece is jointly away from the center of the fastener joint part 1, so that the caliber 8 is enlarged.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. A wrench with an adjustable caliber comprises a holding part and a fastener combining part, wherein the fastener combining part is fixedly arranged at one end of the holding part and comprises an adjuster and a clamping piece, and the adjuster adjusts the caliber of the clamping piece; the fastener joint part is characterized by further comprising a retainer, a clamping piece is arranged inside the retainer in a sliding mode, the clamping piece is composed of an active clamping piece and a passive clamping piece, the cross section of the clamping piece is trapezoidal, one side end face of the clamping piece is abutted to the bottom face of the adjacent clamping piece, the adjuster drives the active clamping piece to move, and the active clamping piece pushes the passive clamping piece which is abutted to the side end face of the active clamping piece to move in the same direction.

2. An adjustable caliber wrench as claimed in claim 1, wherein the adjuster includes a driving member rotatably disposed on the fastener engaging portion and a sliding member fixedly connected to the driving clamp, the driving member driving the sliding member to reciprocate in the holder.

3. The adjustable caliber wrench of claim 2, wherein the driving member includes a worm gear and a pin, the worm gear is rotatably disposed on the fastener engaging portion via the pin; the sliding piece is a worm, one side of the worm is fixedly connected with the driving clamping piece, and the other side of the worm is provided with a tooth row meshed with the worm wheel.

4. An adjustable caliber wrench as claimed in claim 3, wherein the number of said holding members is six, all of which together form a regular hexagonal caliber.

5. An adjustable caliber wrench as claimed in claim 1 or 3, wherein the holder is provided with a slide track or a slide slot, and one end of the clamping member is slidably disposed in the slide track or the slide slot.

6. The adjustable caliber wrench of claim 4, wherein the retainer has cover plates on both upper and lower end surfaces, and the cover plates are fastened to the retainer by screws.

7. The adjustable caliber wrench of claim 6, wherein the fastener engaging portion has a rectangular aperture, and the worm gear is rotatably disposed in the rectangular aperture.

8. The adjustable caliber wrench of claim 7, wherein the worm is fixedly connected to an end surface of the driving clamp.

9. The adjustable-caliber wrench according to claim 7, wherein the inner surface of the holder is hexagonal, the upper and lower end surfaces of the cover plate are provided with slide rails or slide grooves, and one end of the clamping member is slidably disposed in the slide rails or slide grooves.

10. The adjustable caliber wrench of claim 9, wherein the fastener engaging portion has a sliding slot on a side surface corresponding to the rectangular hole, and the worm gear is engaged with the worm wheel through the sliding slot.

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