CN209954554U - Adjustable clamping piece and hand tool - Google Patents

Abstract

The utility model discloses an adjustable holder and hand tool who has this adjustable holder. The adjustable clamp includes a holder, a slidable member having a slider body embedded in a slide groove of the holder, and a locking member operable to move between a locked position and an unlocked position. The slidable member is allowed to slide along the slide groove by the slider body when the locking member is in the unlocked position, and is locked to one of a plurality of predetermined positions on the holder when the locking member is in the locked position. Utilize the utility model discloses, can be favorable to the use of hand tool in narrow and small space to can make hand tool have the centre gripping or control the function of the target object of different grade type, richened hand tool's usage. Particularly, the utility model discloses, can provide a centre gripping mouth opening distance and centre gripping mouth depth of penetration can both conveniently adjust the monkey wrench.

Description

Adjustable clamping piece and hand tool

Technical Field

The utility model relates to an adjustable clamping part and hand tool including this adjustable clamping part especially relate to a grip hold open range and grip hold the adjustable spanner that the deepening can both be adjusted.

Background

A monkey wrench, also called a monkey wrench, is a common tool used for fastening and loosening nuts and bolts with different specifications in daily life and industrial production of people, and has mature manufacturing process and huge social ownership. Pipe tongs, also called pipe tongs, are a common tool for gripping and rotating pipe fittings such as steel pipes, but compared with adjustable wrenches, the pipe tongs are expensive and have less social ownership. Although the two tools are somewhat similar in structure, their use is quite different. In the course of life, production, if only one of the two tools is equipped, it is difficult to adapt to different needs, and if the two tools are equipped together, it wastes money and storage space to some extent, and when carried together, it increases weight. In addition, when the existing adjustable wrench needs to be inserted into a narrow space, the existing adjustable wrench may not be capable of conveniently clamping nuts and bolts due to the limitation of the size of the jaw or the length of the handle, or the wrench may have a too small rotatable angle after clamping.

Besides adjustable spanners and pipe tongs, hand tools such as wire clamps and wire strippers also have the problems of single function and inconvenient operation in narrow space.

SUMMERY OF THE UTILITY MODEL

In view of the above, an object of the present invention is to provide an adjustable clamping member and a hand tool including the same.

According to an aspect of the utility model provides an adjustable holder, adjustable holder includes: a holder having a holding surface, the holding surface having a slide groove formed therein, the slide groove extending in a longitudinal direction of the holding surface; a slidable member having a gripping body and a slider body, the slider body being embedded in the slide groove of the holder; and a locking member operable to move between a locking position and an unlocking position, the slidable member being allowed to slide along the slide groove by the slider body when the locking member is in the unlocking position, the locking member locking the slidable member at one of a plurality of predetermined positions on the holder when the locking member is in the locking position.

Optionally, a plurality of engaging notches are arranged on the slider body of the slidable member in a longitudinal direction of the holding surface; and the locking piece comprises a pin shaft and a clamping convex block arranged on the pin shaft, when the locking piece is positioned at the locking position, the clamping convex block is embedded with one clamping notch in the plurality of clamping notches, and the locking piece reaches the unlocking position by moving the pin shaft along the thickness direction of the adjustable clamping piece to enable the clamping convex block to move out of the clamping notch.

Optionally, a grooved step hole is opened in the holder, the grooved step hole penetrating from one side of the holder to the other side of the holder in a thickness direction of the adjustable clamp, intersecting the sliding groove, and including: a first bore segment extending from the one side of the retainer; a third bore segment extending from the other side of the retainer; a second bore section connecting the first and third bore sections and having a radial dimension less than a radial dimension of the first and third bore sections, thereby forming a first step face between the first and second bore sections toward the one side and a second step face between the third and second bore sections toward the other side; and a lateral groove located on one side of the grooved stepped hole close to the slidable member, the lateral groove forming a space for the engaging projection to move between the locked position and the unlocked position.

Optionally, the pin is disposed in the slotted stepped bore and includes a first hat head portion proximate the first bore segment and a second hat head portion proximate the third bore segment, the first hat head portion having a radial dimension greater than the radial dimension of the second bore segment and less than or equal to the radial dimension of the first bore segment, and the second hat head portion having a radial dimension greater than the radial dimension of the second bore segment and less than or equal to the radial dimension of the third bore segment.

Optionally, the locking member further comprises a compression spring surrounding the pin and compressed between the second hat-shaped head and the second step face. When the locking member is in the locked position, the first cap-shaped head portion is pressed against the first step surface by the urging force of the compression spring, and the second cap-shaped head portion is operable to move toward the second step surface in the third hole section against the urging force of the compression spring, thereby moving the engaging projection to the unlocked position.

Optionally, the pin comprises a first shaft portion integral with the first cap shaped head portion and a second shaft portion integral with the second cap shaped head portion, the first shaft portion and the second shaft portion being fixed together.

Optionally, the cross-sectional shape of the sliding groove and the slider body is a major arc segment as viewed in the longitudinal direction of the holding surface.

Optionally, an elastic member is provided in the chute, the elastic member being located between a base end of the chute and an end of the slidable member near the base end of the chute.

Optionally, the clamping body has a clamping surface, a middle section of the clamping surface in the longitudinal direction is an arc-shaped concave surface, and a portion of the clamping surface other than the arc-shaped concave surface is a plane.

Optionally, a plurality of transverse stripes are formed on the arc-shaped concave surface, and each transverse stripe extends along the thickness direction of the adjustable clamping piece.

Optionally, the slidable member is detachable from the holder along the slide groove.

According to a second aspect of the present invention, there is provided a hand tool, comprising: a handle; and a first clamp and a second clamp located at one end of the handle and opposite to each other, wherein at least one of the first clamp and the second clamp is an adjustable clamp according to the first aspect of the invention.

Optionally, the retainer of the first clip is integrally formed with the handle and the retainer of the second clip is connected to the handle and is operable to move relative to the handle to bring the second clip closer to or further away from the first clip.

Optionally, the first clamping member and the second clamping member are adjustable clamping members according to the first aspect of the present invention, and the sliding groove of the first clamping member and the sliding groove of the second clamping member are parallel to each other.

Alternatively, the plurality of predetermined positions include an extended position where the slidable member is extended from the corresponding holder away from the base end of the corresponding slide groove, and a retracted position where the slidable member is retracted from the extended position toward the base end of the corresponding slide groove.

Optionally, the hand tool is a spanner wrench.

Optionally, the hand tool is a gripping tool.

Utilize the utility model discloses an adjustable holder and hand tool for but the sliding part of adjustable holder can be locked in different longitudinal position for the holder, and thereby be favorable to the use of hand tool in narrow and small space, and can make hand tool have the centre gripping or control the function of the target object of different grade type, richened hand tool's usage. When the hand tool is an adjustable wrench, the opening distance of the clamping opening and the depth of the clamping opening are adjustable, so that the multifunctional adjustable wrench has the functions of pipe tongs and the like, and achieves multiple purposes.

Drawings

Fig. 1A is a perspective view of a spanner wrench according to an embodiment of the present invention with the retainer in a retracted position;

FIG. 1B is a perspective view of a spanner wrench according to an embodiment of the present invention with the retaining members in an extended position;

figure 2A is a perspective view of a retainer of a first clip and a handle integral therewith according to an embodiment of the present invention;

figure 2B is a perspective view of a retainer of a second clamp according to an embodiment of the present invention;

fig. 3A is a perspective view of a slidable member of a first clamp according to an embodiment of the present invention;

fig. 3B is a perspective view of a slidable member of a second clamp according to an embodiment of the present invention;

fig. 4 is an exploded perspective view of a locking member of a first clamp according to an embodiment of the present invention;

fig. 5 is a cross-sectional view taken along a plane of symmetry in the thickness direction of the spanner wrench according to an embodiment of the present invention;

fig. 6 is a sectional view of the first clamping member taken along line M-M in fig. 5.

Detailed Description

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. It is to be understood that the directions shown in the drawings, up, down, left, right, etc., are illustrative and not restrictive. In addition, the same or similar components and structures will be denoted by the same or similar reference numerals.

Fig. 1A and 1B show an overall structure of a monkey wrench according to an embodiment of the present invention. This spanner wrench is an example of a hand tool according to the present invention.

As shown in fig. 1A, the spanner wrench according to the present embodiment includes a handle 4, a first clamp 1A, and a second clamp 1 b. Similarly to a conventional monkey wrench, the handle 4 has an elongated shape, and for convenience of operation, the handle 4 extends at an angle of preferably 15 to 20 ° to the longitudinal direction (i.e., the front-rear direction in the drawing) of the opposed surfaces of the first and second clamping members 1a and 1 b.

The first clamp 1a and the second clamp 1b are examples of adjustable clamps according to the invention. As shown in fig. 1A, the first clamp 1A includes a holder 20a, a slidable member 10a, and a locking member 30a, and similarly, the second clamp 1b includes a holder 20b, a slidable member 10b, and a locking member 30 b.

The holder 20a of the first clamp 1a and the handle 4 may be formed integrally, in which case the first clamp 1a may also be referred to as a fixed jaw piece or a fixed jaw. The holder 20B of the second clamp 1B is connected to the handle 4 in such a manner as to be translatable in the up-down direction in fig. 1A and 1B with respect to the first clamp 1A, and is thus positionable close to or away from the first clamp 1A. Thus, the second clamp 1b may also be referred to as a movable block or movable jaw.

As shown in fig. 2A, 2B and 5, similarly to the conventional monkey wrench, a through groove 41 extending in the up-down direction is formed on the front side surface of the handle 4, the through groove 41 includes a cylindrical surface and two flat surfaces connected to the cylindrical surface, and a circular hole 42 parallel to the through groove 41 is formed beside the through groove 41. The adjusting stud 5 (see fig. 1A) is mounted in a window 9 (see fig. 5) opened in the handle 4 by a pin 6 inserted in a circular hole 42. A flat plate portion 29b and a cylindrical portion 28b with a screw thread 27b are formed on the holder 20b on the side (base end side) near the handle 4, the flat plate portion 29b and the cylindrical portion 28b are fitted in the through groove 41, the cylindrical portion 28b is fitted to the cylindrical surface of the through groove 41, and the flat plate portion 29b is fitted to both flat surfaces of the through groove 41. The thread of the adjusting stud 5 cooperates with the thread 27b of the stud portion 28 b. The user can move the holding member 20b up and down along the through groove 41 by rotating the adjusting stud 5, thereby adjusting the distance (grip opening) between the second grip member 1b and the first grip member 1 a. Since the above-described coupling, adjusting structure of the second clamping member 1b and the handle 4 is similar to that of a conventional spanner wrench, the details thereof will not be described in detail. It should be understood that the second clamping member 1b and the handle 4 may also adopt other connecting structures, and the present invention is not limited thereto. In addition, the holding members 20a and 20b may have a bird's beak shape similar to the fixed jaw and the movable jaw of a conventional spanner wrench, respectively, and other suitable shapes may be adopted.

The slidable members 10a, 10B are provided on the opposed surfaces of the holding members 20a, 20B, and the slidable members 10a, 10B can be locked by the locking members 30a, 30B in a retracted position retracted with respect to the holding members 20a, 20B shown in fig. 1A or in an extended position extended beyond (forward) the holding members 20a, 20B shown in fig. 1B.

According to the present embodiment, since the slidable members 10a, 10b can be locked in the extended position or the retracted position, that is, the grip depth of the spanner wrench can be switched. Thus, when the slidable members 10a, 10b are locked in the retracted position, the spanner wrench functions as a normal spanner, with the normal function of a normal spanner; when the slidable members 10a, 10b are locked in the extended position, the slidable members 10a, 10b may extend into a narrow space to grip or hold an object (e.g., a screw, a tube, etc.), or may grip or hold a larger object.

Next, the specific configuration of the first and second clamps 1a and 1b according to the present embodiment will be described in detail.

Fig. 2A, 3A and 4 show the holder 20a, the slidable member 10a and the locking member 30a of the first clamp 1a, respectively.

As shown in fig. 2A, the holding member 20a of the first clamp 1a has a holding surface 21 a. In the assembled state as shown in fig. 1A and 1B, the holding surface 21A and the holding surface 21B of the holder 20B of the second clip 1B are opposed to each other and parallel to each other. The holding surface 21a may be elongated rectangular as a whole. The holding surface 21A is provided with a slide groove 22a extending in the longitudinal direction of the holding surface 21A (i.e., the front-rear direction in fig. 1A). Optionally, the extension of the sliding groove 22a coincides or substantially coincides with the longitudinal length of the retaining surface 21 a.

As shown in fig. 3A and 6, the slidable member 10a of the first clamp 1a includes a clamping body 11a and a slider body 12a arranged in the up-down direction. The clamping body 11a and the slider body 12a may be integrally formed. The clamping body 11a has a clamping surface 111a facing the second clamping member 1 b. The length of the clamping surface 111a may be substantially the same as the length of the holding surface 21a, or may be slightly longer or shorter than the length of the holding surface 21 a; the width of the clamping surface 111a may be the same as the width of the holding surface 21a, or slightly wider than the width of the holding surface 21a (as shown in fig. 6).

The slider body 12a of the slidable member 10a is fitted in the slide groove 22a of the holder 20a, and the face of the clamping body 11a opposite to the clamping face 111a abuts or abuts against the holding face 21a of the holder 20 a. Thus, when the locking member 30a is in the unlocked position as described below, the slidable member 10a can be moved along the slide groove 22a by the slider body 12a, so as to be able to switch between the retracted position shown in fig. 1A and the extended position shown in fig. 1B. Preferably, the sectional shapes of the slide groove 22a and the slider body 12a are major arc-shaped (major arc-shaped) that fit each other when viewed in the front-to-rear direction (i.e., in the sectional view of fig. 6), which allows the slider body 12a to slide freely in the slide groove 22a, but prevents the slider body 12a from coming out of the slide groove 22a in the up-down direction. Alternatively, the cross-sectional shapes of the slide slot 22a and the slider body 12a may also be dove-tail shapes or other mating shapes that mate with each other. In addition, the front side surface 123A (see fig. 3A) of the slider body 12a may be curved so that the front side surface 123A of the slider body 12a may be continuous with the upper side of the holder 20a when the slidable member 10a is in the extended position (as shown in fig. 1B and 5).

The slider body 12a is provided with two engaging notches 121a and 122a in the front-rear direction. As described in detail below, the engagement notches 121a, 122a function to engage (engage) with the engagement projection 34a on the locking member 30a, thereby locking/positioning the slider body 12a, and thus the slidable member 10a, in the extended position or the retracted position. Alternatively, the bottom surfaces of the engaging notches 121a and 122a are rectangular when viewed in the top-down direction; the side surfaces of the engagement notches 121a and 122a are formed in a nearly semicircular shape when viewed from the front to the rear. However, the engaging notches 121a and 122a may have other shapes as long as they can be engaged with the engaging protrusions 34 a.

Further, as shown in fig. 2A and 6, the holder 20a is provided with a grooved stepped hole 23a, and the grooved stepped hole 23a penetrates from the right side of the holder 20a to the left side of the holder 20a in the left-right direction (i.e., the thickness direction of the first clamp 1a) and intersects (communicates with) the chute 22A. As shown in fig. 6, the grooved stepped hole 23a includes a first hole section 231a, a second hole section 232a, a third hole section 233a, and a lateral groove 236 a. The first hole section 231a extends leftward from the right side of the holder 20 a; third bore segment 233a extends rightward from the left side of holder 20 a; the second bore section 232a connects the first and third bore sections 231a, 233a, and the radial dimension of the second bore section 232a is less than the radial dimension of the first and third bore sections 231a, 233a, thereby forming a first step face 234a toward the right between the first and second bore sections 231a, 232a and a second step face 235a toward the left between the third and second bore sections 233a, 232 a; the lateral groove 236a is located on the side of the grooved stepped hole 23a close to the slidable member 10a (lower side in fig. 6). In this embodiment, the transverse slot 236a extends through the thickness of the retainer 20a, i.e., the transverse slot 236a intersects each of the first bore section 231a, the second bore section 232a, and the third bore section 233 a. Alternatively, the transverse groove 236a may extend only from the right side of the holding part 20a to the sliding groove 22 a.

As shown in fig. 4 and 6, the locking member 30a of the first clamping member 1a includes a pin 31a, a catching protrusion 34a, and a compression spring 35 a. The engaging projection 34a is located at a position on the right of the center of the pin 31a in the axial direction of the pin 31 a. The engagement projection 34a projects outward in the longitudinal direction of the pin 31a so as to be received in the lateral groove 236a of the grooved stepped hole 23a or the slide groove 22a of the holder 20 a. Alternatively, the engaging projection 34a is shaped like a cylinder whose axial direction is perpendicular to the axial direction of the pin 31a and whose axial dimension coincides with the longitudinal dimension of the engaging notch. Alternatively, the snap-fit projection 34a may be formed in a lateral opening on the pin 31a, and may be formed integrally with the pin 31 a. However, the engaging projection 34a may have other shapes, and it may be fixed to the pin 31a by welding, bonding, snapping, or the like. A first cap-shaped head 321a and a second cap-shaped head 331a are formed at both ends of the pin 31a, respectively. For ease of assembly, the pin 31a may include a first shaft portion 32a integrally formed with the first shaft section 322a by a first cap-shaped head portion 321a and a second shaft portion 33a integrally formed with the second shaft section 332a by a second cap-shaped head portion 331 a. The engaging projection 34a is formed on the first shaft section 322 a. The first shaft segment 322a is provided with a mounting hole 323a, and the second shaft segment 332a can be in interference fit with the mounting hole 323 a. Alternatively, the mounting hole 323a may be a threaded hole, and the second shaft segment 332a may be correspondingly externally threaded on an outer surface thereof, so that the second shaft segment 332a may be threadedly coupled with the first shaft segment 322 a.

In the state shown in fig. 6, the locking member 30a has been installed in the grooved stepped hole 23a, and is located at the locking position where the slidable member 10a is locked. As shown in fig. 6, the first cap-shaped head 321a is partially located near the first hole segment 231a, and the radial dimension of the first cap-shaped head 321a is larger than that of the second hole segment 232a and slightly smaller than that of the first hole segment 231a, so that the first cap-shaped head 321a can move left and right along the first hole segment 231 a. The second cap-shaped head 331a is located near the third hole section 233a, and the radial dimension of the second cap-shaped head 331a is larger than the radial dimension of the second hole section 232a and slightly smaller than the radial dimension of the third hole section 233a, so that the second cap-shaped head 331a can move left and right along the third hole section 233 a. In addition, the radial dimension of the first shaft section 322a is slightly smaller than the radial dimension of the second bore section 232a, such that the first shaft section 322a is able to move left and right along the second bore section 232 a. It is understood that the radial dimensions of the first cap-shaped head 321a, the second cap-shaped head 331a and the first shaft section 322a may also be wholly or partially equal to the radial dimensions of the first hole section 231a, the third hole section 233a and the second hole section 232a to achieve the friction fit of the pin shaft 31a with the grooved stepped hole 23 a.

The compression spring 35a is disposed around the pin 31a, and more specifically, the compression spring 35a is fitted around the first shaft section 322 a. Further, as shown in fig. 6, the compression spring 35a is compressed between the second cap head 331a and the second step surface 235a (so its radial dimension is also between the radial dimensions of the second cap head 331a and the second bore section 232 a). The compression spring 35a applies a leftward urging force to the second cap-shaped head 331a, thereby applying a leftward force to the first cap-shaped head 321a fixed integrally with the second cap-shaped head 331a to press the first cap-shaped head 321a against the first step face 234 a. Thereby, the locking member 30a is stably placed in the locking position. At this time, as shown in fig. 5 and 6, the engaging projection 34a is located in the slide groove 22a (in a portion where the slide groove 22a intersects with the lateral groove 236a) and fitted in the engaging notch 122a, thereby preventing the slidable member 10a from sliding along the slide groove 22a, i.e., locking the slidable member 10a in the extended position.

When the position of the slidable member 10a is to be adjusted, it is first necessary to move the locking member 30a from the locking position to the unlocking position. As shown in fig. 6, the user can move the engaging projection 34a rightward out of the engaging notch 121a, i.e., into a portion of the lateral groove 236a not intersecting the slide groove 22a, by pressing the second cap-shaped head 331a rightward in the third hole section 233a toward the second step surface 235a against the urging force of the compression spring 35 a. At this time, the locking member 30a is in the unlocked position, and the slidable member 10a can slide along the slide groove 22a without being blocked by the engaging projection 34 a. At this time, even if the user releases the finger pressing the second cap shaped head 331a, the slidable member 10a can be slid with the engaging projection 34a pressed against the outer surface of the slider body 12 a. When the slidable member 10a is moved to a position where the other engaging notch 122a is aligned with the engaging projection 34a, the engaging projection 34a can be automatically moved to a position where it is engaged with the other engaging notch 122a along the lateral groove 236a by the compression spring 35a, thereby locking the slidable member 10a again.

As described above, with the above connection structure of the holder 20a, the slidable member 10a and the locking member 30a, the user can quickly and conveniently operate the locking member 30a to switch between the locking position and the unlocking position without the aid of external tools, so that the slidable member can be conveniently moved and locked to a desired position, thereby conveniently adjusting the depth of the grip hole.

Referring to fig. 6 and 4, in assembling the locking member 30a, the first shaft portion 32a is inserted from the right side (the first hole section 231a side) of the slotted stepped hole 23a, the compression spring 35a is fitted into the third hole section 233a from the left side of the slotted stepped hole 23a and fitted over the first shaft section 322a of the first shaft portion 32a, then the second shaft section 332a of the second shaft portion 33a is inserted into the mounting hole 323a of the first shaft section 322a, and the second shaft portion 33a and the first shaft portion 32a are fixed together by interference fit or screw fit between the second shaft section 332a and the mounting hole 323 a.

Further, preferably, as shown in fig. 5, an elastic member 7a is provided in the chute 22 a. The elastic member 7a is located between one end (base end) of the chute near the handle 4 and one end of the slidable member 10a near the handle 4, and the elastic member 7a may be a compression spring or an extension spring. For example, when the elastic member 7a is a compression spring, if the slidable member 10a is to be switched from the retracted position to the extended position, the user only needs to press the second cap-shaped head 331a of the locking member 30a to bring the locking member 30a to the unlocked position, and the slidable member 10a can be automatically slid forward under the elastic force of the elastic member 7a to bring the engaging notch 122a into alignment with the engaging protrusion 34 a. At this time, the user releases his hand, and the locking member 30a automatically locks the slidable member 10a in the extended position, further facilitating the operation. Further, in order to accurately position the slidable member 10a in the extended position or the retracted position, a limit protrusion or a limit step (not shown) that limits the stroke of the slidable member 10a may be provided on the slidable member 10a and/or the holder 20 a.

Fig. 2B and 3B show the holder 20B and the slidable member 10B of the second clamp 1B, respectively. As shown in the drawings, the holder 20b and the slidable member 10b have similar structures to those of the holder 20a and the slidable member 10 a. Further, the locking member 30b of the second clamping member 1b has a structure similar to that of the locking member 30a shown in fig. 4, and the connection relationship between the holding member 20b, the slidable member 10b and the locking member 30b of the second clamping member 1b is also similar to that of the first clamping member 1a (refer to fig. 5 and 6). In addition, an elastic member 7b similar to the elastic member 7a may also be provided in the chute 22b of the second clamp 1b, and a method of switching the position of the slidable member 10b of the second clamp 1b is also similar to the method of switching the slidable member 10 a. Therefore, detailed description of the second clamp 1b and its switching operation will be omitted.

Further, in order to make the diagonal wrench according to the present invention function as a pipe wrench better, it is preferable that an arc-shaped concave surface 112a is provided on the clamping surface 111a of the clamping body 11a of the slidable member 10 a. As shown in fig. 3A, the arc-shaped concave surface 112a is located at the middle of the clamping surface 111a in the longitudinal direction, the direction of the rotation axis of the arc-shaped concave surface 112a coincides with the thickness direction of the first clamping member 1a (i.e., the thickness direction of the spanner wrench), and the portions of the clamping surface 111a other than the arc-shaped concave surface 112a (i.e., the front and rear portions of the clamping surface 111a in the longitudinal direction) are smooth planes. Further preferably, as shown in fig. 3A, a plurality of lateral stripes are formed side by side on the arc-shaped concave surface 112a, and the extending direction of each lateral stripe is also consistent with the thickness direction of the first clamping member 1 a. Similarly, as shown in fig. 3B, an arc-shaped concave surface 112B similar to the arc-shaped concave surface 112a is provided on the gripping surface 111B of the gripping body 11B of the slidable member 10B.

By providing the arc-shaped concave surfaces 112a, 112b on the gripping surfaces 111a and 111b, the gripping surfaces 111a and 111b can grip or hold a cylindrical object such as a pipe more stably. In particular, by cooperating with the rotational adjustment of the adjusting stud 5, the clamping surfaces 111A and 111b can clamp a smaller cylindrical object by means of the curved concave surfaces 112a, 112b when the slidable members 10a, 10b are in the retracted position shown in fig. 1A; when the slidable members 10a, 10B are in the extended position shown in fig. 1B, the gripping surfaces 111a and 111B can grip a larger cylindrical object through the arcuate concave surfaces 112a, 112B. Thus, the spanner wrench according to the present embodiment can be reliably used as a pipe wrench, achieving multiple uses of one object.

Furthermore, different slidable members with different clamping surfaces may be provided. For example, the clamping surfaces of the slidable members may have arcuate concave surfaces of different curvatures, concave surfaces of different shapes, convex surfaces, inclined surfaces or combinations thereof, stripes or dots of different shapes and sizes, or different surface materials. In this way, the slidable members 10a, 10b can be detached from the holding members 20a, 20b through the slide grooves 22b to be replaced with different slidable members to perform different functions.

Modification examples

Although the preferred embodiments of the present invention have been described in detail hereinabove, the present invention is not limited thereto, and those skilled in the art can make various modifications and variations to the embodiments within the scope of the present invention.

For example, although a monkey wrench is used as an example of the hand tool in the above embodiments, the adjustable clamping member according to the present invention may be provided on other hand tools such as a pipe wrench, a fixed jaw wrench, a wire clamp, a wire stripper, and the like.

Although in the above-described embodiments two adjustable clamps according to the invention are provided on the spanner wrench as an example of a hand tool, it is however also possible to provide only one adjustable clamp on the hand tool, the other clamp (jaw) on the hand tool being either a fixed clamp or an adjustable clamp of a different type from the invention.

Although in the above described embodiment the retaining member of the first clamp member is formed integrally with the handle and the retaining member of the second clamp member is connected to the handle in a manner enabling translational movement relative to the first clamp member, the second clamp member may be connected (e.g. hinged) to the handle in a manner enabling rotational movement relative to the first clamp member; in addition, the first clamping part and the second clamping part can be movably connected with the handle respectively.

Although in the above-described embodiment, the locking member locks the slidable member at one of two predetermined positions (the extended position and the retracted position) on the holder, the predetermined position may be three or more. This can be achieved by increasing the number of snap-in indentations accordingly.

Although in the above described embodiments one locking member is provided for each adjustable clamping member, it is also possible to add one locking member in order to lock the slidable member more firmly.

Although in the above described embodiments a slotted stepped bore, a pin with two hat-shaped heads and a compression spring are used as locking members, it will be appreciated by those skilled in the art that other types of locking structures may be used to lock the slidable member. For example, the first cap-shaped head may be omitted; the compression spring may be omitted (the pin may be frictionally or otherwise located); or a screw hole may be simply formed in a side surface or a bottom surface of the holder, and a bolt screwed into the screw hole and into the engaging notch may be used as the locking member.

Although in the above-described embodiment, the pin shaft includes the first shaft portion and the second shaft portion fixed together, this is designed merely for ease of assembly, and the first shaft portion and the second shaft portion may be integrally formed.

Although the elastic member is provided in the chute in the above embodiment, the elastic member may be omitted.

The foregoing description of certain exemplary embodiments and variations of the invention has been presented for purposes of illustration and description. However, the foregoing description is not intended to be exhaustive or to limit the invention to the precise form disclosed. It is apparent that various modifications and variations can be made by those skilled in the art. For example, individual features may be arbitrarily combined, substituted, and omitted within the spirit and scope of the present invention. Accordingly, the scope of the invention is to be defined only by the claims appended hereto, and by their equivalents.

Claims (13)

1. An adjustable clamp (1a, 1b), characterized in that the adjustable clamp (1a, 1b) comprises:

a holder (20a, 20b) having a holding surface (21a, 21b), wherein a slide groove (22a, 22b) is formed in the holding surface (21a, 21b), and wherein the slide groove (22a, 22b) extends in the longitudinal direction of the holding surface (21a, 21 b);

a slidable member (10a, 10b) having a clamping body (11a, 11b) and a slider body (12a, 12b), the slider body (12a, 12b) being embedded in the slide groove (22a, 22b) of the holder member (20a, 20 b); and

a locking member (30a, 30b) operable to move between a locked position and an unlocked position, when the locking member (30a, 30b) is in the unlocked position, the slidable member (10a, 10b) is allowed to slide along the slide groove (22a, 22b) by the slider body (12a, 12b), when the locking member (30a, 30b) is in the locked position, the locking member (30a, 30b) locks the slidable member (10a, 10b) at one of a plurality of predetermined positions on the retaining member (20a, 20 b).

2. Adjustable clamp (1a, 1b) according to claim 1,

a plurality of engagement notches (121a, 122 a; 121b, 122b) are arranged on the slider body (12a, 12b) of the slidable member (10a, 10b) in the longitudinal direction of the holding surface (21a, 21 b);

the locking piece (30a) comprises a pin shaft (31a) and a clamping lug (34a) arranged on the pin shaft (31a), when the locking piece (30a) is in the locking position, the clamping lug (34a) is embedded with one clamping notch in the plurality of clamping notches (121a and 122a), and the locking piece (30a) reaches the unlocking position by moving the pin shaft (31a) along the thickness direction of the adjustable clamping piece to enable the clamping lug (34a) to move out of the clamping notch (121a and 122 a).

3. Adjustable clamp (1a, 1b) according to claim 2,

a grooved stepped hole (23a, 23b) is opened in the holder (20a, 20b), the grooved stepped hole (23a, 23b) penetrating from one side of the holder (20a, 20b) to the other side of the holder (20a, 20b) in the thickness direction of the adjustable clamp, intersecting the runner (22a, 22b), and including:

a first bore section (231a) extending from the one side of the holder (20 a);

a third bore section (233a) extending from the other side of the holder (20 a);

a second bore section (232a) connecting the first bore section (231a) and the third bore section (233a), and the second bore section (232a) having a radial dimension smaller than the radial dimension of the first bore section (231a) and the radial dimension of the third bore section (233a) to form a first step face (234a) between the first bore section (231a) and the second bore section (232a) toward the one side and a second step face (235a) between the third bore section (233a) and the second bore section (232a) toward the other side; and

a lateral groove (236a) located on a side of the grooved stepped hole (23a) close to the slidable member (10a), the lateral groove (236a) forming a space for the engagement projection (34a) to move between the locked position and the unlocked position,

wherein the pin shaft (31a) is arranged in the slotted stepped bore (23a, 23b) and comprises a first cap-shaped head (321a) adjacent to the first bore section (231a) and a second cap-shaped head (331a) adjacent to the third bore section (233a), the first cap-shaped head (321a) having a radial dimension greater than the radial dimension of the second bore section (232a) and less than or equal to the radial dimension of the first bore section (231a), and the second cap-shaped head (331a) having a radial dimension greater than the radial dimension of the second bore section (232a) and less than or equal to the radial dimension of the third bore section (233a),

the locking member (30a, 30b) further includes a compression spring (35a), the compression spring (35a) surrounding the pin shaft (31a) and being compressed between the second cap-shaped head (331a) and the second step surface (235a),

when the locking member (30a) is in the locking position, the first cap-shaped head (321a) is pressed against the first step face (234a) by the urging force of the compression spring (35a), and

the second cap-shaped head (331a) is operable to move in the third hole section (233a) toward the second step face (235a) against the urging force of the compression spring (35a), thereby moving the click projection (34a) to the unlock position.

4. Adjustable clamp (1a, 1b) according to claim 3,

the pin (31a) comprises a first shaft portion (32a) integral with the first cap-shaped head portion (321a) and a second shaft portion (33a) integral with the second cap-shaped head portion (331a), the first shaft portion (32a) and the second shaft portion (33a) being fixed together.

5. Adjustable clamp (1a, 1b) according to claim 1,

the cross-sectional shapes of the slide grooves (22a, 22b) and the slider bodies (12a, 12b) are arcuate when viewed in the longitudinal direction of the holding surfaces (21a, 21 b).

6. Adjustable clamp (1a, 1b) according to any one of claims 1 to 5,

an elastic member (7a, 7b) is provided in the chute (22a, 22b), and the elastic member (7a, 7b) is located between a base end of the chute (22a, 22b) and one end of the slidable member (10a, 10b) near the base end of the chute (22a, 22 b).

7. Adjustable clamp (1a, 1b) according to any one of claims 1 to 5,

the clamping bodies (11a, 11b) are provided with clamping surfaces (111a, 111b), the middle sections of the clamping surfaces (111a, 111b) in the longitudinal direction are arc-shaped concave surfaces (112a, 112b), and the parts of the clamping surfaces (111a, 111b) except the arc-shaped concave surfaces (112a, 112b) are planes.

8. Adjustable clamp (1a, 1b) according to claim 7,

a plurality of transverse stripes are formed on the arc-shaped concave surfaces (112a, 112b), and each transverse stripe extends along the thickness direction of the adjustable clamping piece.

9. A hand tool comprising:

a handle (4); and

a first clamp (1a) and a second clamp (1b), said first clamp (1a) and said second clamp (1b) being located at one end of said handle (4) and opposite each other, characterized in that,

at least one of the first clamp (1a) and the second clamp (1b) is an adjustable clamp according to any one of claims 1 to 8.

10. The hand tool according to claim 9,

the holder (20a) of the first clamp (1a) is formed integrally with the handle (4), and

a retainer (20b) of the second clamp (1b) is connected to the handle (4) and is operable to move relative to the handle (4) to bring the second clamp (1b) closer to or farther from the first clamp (1 a).

11. The hand tool according to claim 9,

characterized in that the first clamp (1a) and the second clamp (1b) are adjustable clamps according to any one of claims 1 to 8, and,

the runner (22a) of the first clamp (1a) and the runner (22b) of the second clamp (1b) are parallel to each other.

12. The hand tool according to claim 11,

the plurality of predetermined positions include an extended position where the slidable member (10a, 10b) is extended from the corresponding holder (20a, 20b) away from the base end of the corresponding slide groove (22a, 22b), and a retracted position where the slidable member (10a, 10b) is retracted from the extended position toward the base end of the corresponding slide groove (22a, 22 b).

13. Manual tool according to any of claims 9 to 12,

the hand tool is a spanner wrench.

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