CN212096115U - Adjustable spanner - Google Patents

Abstract

The utility model discloses an adjustable spanner, including spanner main part and the handle body, spanner main part one end is equipped with the centre gripping mouth, and handle body swing joint is at the spanner main part other end, and spanner main part tip sliding connection one can change the movable block of centre gripping mouth grip area territory, and the handle body is connected with the movable block transmission. When the clamping device is used, the clamping opening can be matched with a fastener to be loosened or tightened, then the movable block is moved through the operating handle body, and the movable block and the inner wall of the clamping opening are enclosed into areas with different sizes through the moving amount of the movable block in different degrees so as to adapt to fasteners with different specifications. The utility model discloses can adjust into corresponding specification according to the size of operation object, the light dress operation of can being convenient for to the spanner is changed in the reduction, and the time that the specification matches improves work efficiency. In addition, the clamping force can be applied through the handle body at any time in the clamping process, the clamping force is manually tightened, and the handle body has a longer acting force arm, so that larger clamping force is more easily generated, and loosening and slipping are effectively prevented.

Description

Adjustable spanner

Technical Field

The utility model relates to a hand tool, more specifically say, it relates to an adjustable spanner.

Background

The specification of a single common wrench is single, which is not enough to meet the requirement of daily work, a plurality of wrenches with different specifications must be assembled into a whole, a whole set of wrenches is often required to enter an operation site during use, and the specification needs to be compared with the specification of an operation object during specification replacement, so the use is inconvenient; although there are wrenches with adjustable specifications on the market at present, the wrenches are easy to loosen in the using process, are not very convenient to use and are inconvenient to adjust. Utility model with publication number CN208084224U specially does benefit to 2018 and 11 months and 13 days and discloses an adjustable spanner, has solved current adjustable spanner and has adjusted movable part's position through the screw rod rotation, and the defect that centre gripping size change appears because of the screw rod is not hard up easily includes: the movable chuck is driven by the rotating ring, the rotating ring drives the movable chuck to move radially in the rotating process, the rotating ring rotates in a plane, and the rotating ring always keeps the central position and the plane position unchanged during adjustment, so that the rotating ring rotates smoothly, and the phenomenon of clamping stagnation cannot occur in the rotating process; the rotation of the rotating ring is realized by the rotating component. However, the utility model can rotate the rotating ring by fingers to drive the movable chuck, the anti-loosening effect of the movable chuck is limited, and especially, the torque force is difficult to continuously increase in the using process.

SUMMERY OF THE UTILITY MODEL

The existing wrench has a single specification, and a plurality of different wrenches are required to be assembled into a whole for use; or even can carry out the specification adjustment, nevertheless be difficult for not hard up in the use, adjust inconvenient, for overcoming these defects, the utility model provides a can adjust the specification in a flexible way, and can manually tighten at the clamping process, prevent not hard up the adjustable spanner that skids.

The technical scheme of the utility model is that: the adjustable wrench comprises a wrench main body and a handle body, wherein one end of the wrench main body is provided with a clamping opening, the handle body is movably connected to the other end of the wrench main body, the end part of the wrench main body is connected with a movable block capable of changing the clamping area of the clamping opening in a sliding mode, and the handle body is connected with the movable block in a transmission mode. When the clamping device is used, the clamping opening can be matched with a fastener to be loosened or tightened, then the movable block is moved through the operating handle body, and the movable block and the inner wall of the clamping opening are enclosed into areas with different sizes through the moving amount of the movable block in different degrees so as to adapt to fasteners with different specifications. The utility model discloses can adjust into corresponding specification according to the size of operation object, one pull multi-purpose, consequently the spanner that can significantly reduce is equipped with, the light-duty operation of being convenient for to the spanner is changed in the reduction, and the time that the specification matches improves work efficiency. In addition, the clamping force can be applied through the handle body at any time in the clamping process, the clamping force is manually tightened, and the handle body has a longer acting force arm, so that larger clamping force is more easily generated, and loosening and slipping are effectively prevented.

Preferably, a screw rod is connected between the wrench main body and the handle body, the screw rod is in threaded connection with the wrench main body, and the movable block is rotatably clamped at the end part of the screw rod. During the use, the screw rod is driven to rotate through the handle body, the rotation of the screw rod is converted into the axial movement relative to the wrench main body, and finally the movable block is driven to move axially, so that the movable block extends into the clamping port to different degrees, and clamping areas to different degrees are obtained.

Preferably, the handle body is of a hollow structure, a matching block is arranged in a cavity of the handle body, the matching block is in key connection with the inner wall of the cavity of the handle body, and the matching block is in threaded connection with the screw rod. When the handle body is rotated, the matching block is driven to rotate, and due to threaded connection, the rotation between the matching block and the screw rod can be converted into axial driving force, so that the axial extension of the screw rod is realized, the movable block slides, and the clamping area of the clamping opening is changed.

Alternatively, the handle body is of a hollow structure, a matching block is arranged in a cavity of the handle body and fixedly connected with the handle body, and the matching block is matched with the screw rod through a torsion transmission structure. After the handle body is rotated, the matching block synchronously rotates, torque is directly transmitted to the screw rod through the torque transmission structure, so that axial extension of the screw rod can be realized, the movable block slides, and the effect of a clamping area of the clamping opening is changed.

Alternatively, the screw is slidably embedded in the shank via a torque transmitting structure. The handle body directly drives the screw rod through the torque force transmission structure, so that the axial extension and contraction of the screw rod can be realized, the movable block slides, and the effect of a clamping area of the clamping opening is changed.

As preferred, even there is a slide bar between spanner main part and the handle body, and the slide bar sliding connection is on spanner main part, and the movable block rotates the joint at the slide bar tip, sliding connection elastic locking piece on the spanner main part, is equipped with axial locking structure between elastic locking piece and the slide bar. The elastic locking block and the sliding rod can be separated, when the elastic locking block is separated from the sliding rod, the sliding rod is not axially constrained, the elastic locking block can slide quickly to push and pull the movable block in place, then the elastic locking block is meshed with the sliding rod to axially lock the sliding rod, and the position of the movable block after adjustment is kept.

Preferably, a pawl is disposed in the clamping opening. The pawl can be arranged to slip in one direction when the fastener is twisted, so that the small-swing repeated stress application is facilitated without the need of swinging the handle body in a whole circle, and the working efficiency can be improved.

Preferably, the wrench body is provided with a sliding groove extending to the clamping opening, and the movable block is slidably connected in the sliding groove. The sliding grooves are arranged, so that the sliding connection of the movable block and the wrench main body can be realized.

Preferably, the movable block comprises two movable block split bodies, the inner wall of the sliding groove is fixedly connected with the support rail, and the two movable block split bodies are fixedly connected through screws by separating the support rail. The support rail can support and restrain the two movable blocks in a split manner, so that the movable blocks are prevented from falling off from the sliding grooves. The movable block of the split structure is convenient to assemble into the sliding groove and disassemble from the sliding groove.

Preferably, the handle body is rotatably sleeved on the end part of the wrench main body. The handle body rotates and cup joints in spanner main part, and handle body tip obtains supporting, can be connected with spanner main part more steadily.

The utility model has the advantages that:

the clamping device is suitable for various clamping specifications and convenient to use. The utility model discloses can adjust into corresponding specification according to the size of operation object, it is multi-purpose to pull, consequently can significantly reduce the spanner outfit, is convenient for light-duty dress operation.

The working efficiency is improved. Use the utility model discloses can reduce and change the spanner, the time that the specification matches to improve work efficiency.

The clamping process can be manually clamped, so that loosening and slipping are prevented. The utility model discloses can be at any time through the afterburning of handle body at the centre gripping in-process, manual tight clamping-force because the handle body has longer effect arm of force, produces great clamping-force more easily, prevents effectively that not hard up from skidding.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic longitudinal sectional view of the present invention;

fig. 3 is a schematic cross-sectional structure of the present invention;

fig. 4 is a side view of the present invention;

FIG. 5 is a cross-sectional view taken at D-D of FIG. 4;

FIG. 6 is a schematic structural view of the fitting block of the present invention;

FIG. 7 is a schematic structural view of the middle movable block of the present invention when disassembled;

fig. 8 is another schematic structural diagram of the present invention;

FIG. 9 is a schematic longitudinal sectional view of another embodiment of the present invention;

FIG. 10 is a cross-sectional view taken at B1-B1 of FIG. 8;

fig. 11 is a schematic structural view of the present invention in embodiment 3;

FIG. 12 is a cross-sectional view taken at A2-A2 of FIG. 11;

FIG. 13 is a cross-sectional view taken at B2-B2 of FIG. 11;

fig. 14 is a schematic view showing the state of the elastic locking piece engaged with the slide bar according to embodiment 4 of the present invention;

fig. 15 is a schematic view showing the state of the elastic locking piece separated from the slide rod in embodiment 4 of the present invention;

fig. 16 is a schematic structural view of the present invention in example 5;

fig. 17 is a schematic structural view of a pawl according to the present invention;

fig. 18 is a side view of a pawl according to the present invention.

In the figure, 1-wrench body, 2-handle body, 3-movable block, 4-clamping opening, 5-screw rod, 6-matching block, 7-slide rod, 8-elastic locking block, 9-pawl, 10-sliding chute, 11-movable block split body, 12-supporting rail, 13-kidney slot, 14-stop pin, 15-torsion spring, 16-near end point, 17-far end point, 18-mushroom-shaped clamping head, 19-mushroom-shaped clamping groove, 20-step, 21-spline and 22-spline groove.

Detailed Description

The present invention will be further described with reference to the following detailed description of the embodiments.

Example 1:

as shown in fig. 1 to 7, an adjustable wrench comprises a wrench body 1 and a handle body 2, wherein a clamping opening 4 is formed at one end of the wrench body 1, and the handle body 2 is rotatably sleeved at the other end of the wrench body 1. The end of the clamping opening 4 of the wrench body 1 is slidably connected with a movable block 3 which can change the clamping area of the clamping opening 4, scales are arranged on the movable block 3, the V-shaped end surface of the movable block 3 and the inner wall of the clamping opening 4 can form a regular hexagon, and the handle body 2 is in transmission connection with the movable block 3. Even there is a screw rod 5 between spanner main part 1 and handle body 2, screw rod 5 and spanner main part 1 threaded connection, and 3 terminal surfaces of movable block are equipped with mushroom-shaped draw-in groove 19, and 5 tip of screw rod then an organic whole are equipped with mushroom-shaped dop 18, and mushroom-shaped dop 18 inlays and puts in mushroom-shaped draw-in groove 19 for movable block 3 rotates the joint at 5 tip of screw rod. The handle body 2 is hollow structure, is equipped with cooperation piece 6 in the cavity of handle body 2, and cooperation piece 6 is global to be equipped with spline 21, and the cavity inner wall of handle body 2 then is equipped with corresponding spline groove 22, and spline 21 forms the key-type connection with spline groove 22 gomphosis, cooperation piece 6 and screw rod 5 threaded connection. The end of the handle body 2 is screwed with an end cover. The wrench body 1 is provided with a sliding groove 10 extending to the clamping opening 4, and the movable block 3 is connected in the sliding groove 10 in a sliding manner. The movable block 3 comprises two movable block split bodies 11, wherein one movable block split body 11 is flat, the other movable block split body 11 is concave, two ends of the concave form V-shaped end faces of the movable block 3 respectively, the movable block 3 is connected with the screw rod 5, a U-shaped supporting rail 12 is fixedly connected to the inner wall of the sliding groove 10, and the two movable block split bodies 11 are fixedly connected through screws through the supporting rail 12 to form a hollow box-shaped structure. Two sides of the support rail 12 are respectively welded on two inner walls of the sliding groove 10, and the U-shaped opening of the support rail 12 can accommodate the concave movable block split body 11 to enter and exit. The outside of the chute 10 is provided with scale alignment marks.

The utility model is suitable for an elasticity dismouting of hexagonal head fastener. During the use earlier with centre gripping mouth 4 cover on will loosening or the fastener of fastening, rotate handle body 2, drive cooperation piece 6 and rotate, because threaded connection, the rotation between cooperation piece 6 and screw rod 5 can change into axial drive power to realize the axial of screw rod 5 and stretch out and draw back, make movable block 3 slide, change 4 centre gripping regions of centre gripping mouth, make the specification matching of centre gripping region and fastener. For fasteners with dimensions smaller than the clamping opening 4, the V-shaped end surface of the movable block 3 and the inner wall of the clamping opening 4 form opposite clamping surfaces. In the use process, the handle body 2 can be turned around the axis of the handle body 2 at any time to compensate or enhance the torsion and prevent loosening and slipping.

Example 2:

as shown in fig. 8 to 10, the handle body 2 is a hollow structure, a matching block 6 is arranged in a cavity of the handle body 2, the matching block 6 is fixedly connected with the handle body 2, the matching block 6 is matched with the screw 5 through a torque transmission structure, the torque transmission structure comprises a rod body with a D-shaped cross section at the rear half section of the screw 5 and a D-shaped cavity in the matching block 6, and the rod body at the rear half section of the screw 5 is embedded with the D-shaped cavity, so that the screw 5 can rotate along with the matching block 6. The rest is the same as example 1.

When the handle body 2 is rotated, the matching block 6 synchronously rotates, and the torsion is directly transmitted to the screw rod 5 through the torsion transmission structure, so that the axial extension of the screw rod 5 can be realized, the movable block 3 slides, and the effect of the clamping area of the clamping opening 4 is changed.

Example 3:

as shown in fig. 11 to 13, the screw 5 is slidably inserted into the handle 2 through a torque transmission structure, the torque transmission structure includes a kidney-shaped shaft in the rear half of the screw 5 and a kidney-shaped cavity in the handle 2, and the rear half of the screw 5 is engaged with the cavity of the handle 2, so that the screw 5 can rotate with the engaging block 6. The rest is the same as example 1.

When the handle body 2 is rotated, the handle body 2 directly drives the screw rod 5 through the torsion transmission structure, so that the axial extension and contraction of the screw rod 5 can be realized, the movable block 3 slides, and the effect of the clamping area of the clamping opening 4 is changed.

Example 4:

as shown in fig. 14 and 15, a sliding rod 7 is connected between the wrench body 1 and the handle body 2, the sliding rod 7 is slidably connected to the wrench body 1, the movable block 3 is rotatably connected to an end of the sliding rod 7, a spring-driven elastic locking block 8 is slidably connected to the wrench body 1, an axial locking structure is arranged between the elastic locking block 8 and the sliding rod 7, and the axial locking structure includes teeth arranged on the surface of the elastic locking block 8 and the surface of the sliding rod 7. The rest is the same as example 1.

When the device is used, the elastic locking block 8 is pressed down to separate the elastic locking block 8 from the sliding rod 7, the sliding rod 7 is not axially constrained, the sliding rod can rapidly slide to push and pull the movable block 3 in place, then the elastic locking block 8 is released, the elastic locking block 8 is popped out, the elastic locking block 8 and the sliding rod 7 form axial locking through meshing between teeth, and the position of the movable block after adjustment is kept.

Example 5:

as shown in fig. 16 to 18, a crescent-shaped pawl 9 is arranged in the clamping opening 4, the pawl 9 is embedded in an arc-shaped notch on the inner wall of the clamping opening 4, an offset kidney-shaped groove 13 is arranged on the pawl 9, a stop pin 14 connected to the wrench body 1 penetrates through the kidney-shaped groove 13, and when the stop pin 14 is located at a near end point 16 of the kidney-shaped groove 13, the pawl 9 can rotate freely around the stop pin 14 in the arc-shaped notch; when the stop pin 14 is located at the distal end point 17 of the kidney slot 13, the pawl 9 is caught in the arc-shaped notch and cannot rotate clockwise around the stop pin 14. A step 20 extends from the pawl 9 along the thickness direction, and a vertical step surface of the step 20 is abutted with a torsion spring 15 so that the pawl 9 has a pre-tightening force of popping out. The end surface of the movable block 3 is a plane. The rest is the same as example 1.

Naturally, the torsion spring 15 is tensioned so that the pawl 9 springs outward until the stop pin 14 abuts against the proximal end 16 of the slot 13. When the clamping device is used, the end face of the movable block 3 and the pawl 9 form a clamping structure for clamping a firm piece. After the fastener is clamped, when the handle body 2 swings clockwise, the pawl 9 is pushed by the fastener, overcomes the repulsive force of the torsion spring 15 and moves, and the far end point 17 is forced to be close to the stop pin 14. Since the clockwise rotation function of the pawl 9 is locked at the distal end point 17, the wrench can grip the fastener for clockwise twisting operation. When the handle body 2 swings anticlockwise, the repulsion of the fastening piece to the pawl 9 disappears, the pawl 9 rebounds under the action of the torsion spring 15, the stop pin 14 returns to the near end point 16, the pawl 9 can rotate anticlockwise under the driving of the handle body 2, and the handle body 2 cannot be blocked. Thus, the shank 2 can be repeatedly applied with a small swing and at a high frequency without swinging in a whole circle, and the working efficiency can be improved.

Example 6:

the peripheral surface of the matching block 6 is provided with a spline groove, the inner wall of the cavity of the handle body 2 is provided with a corresponding spline, and the spline groove are embedded to form key connection. The rest is the same as example 1.

Example 7:

the V-shaped end surface of the movable block 3 and the inner wall of the clamping opening 4 can form a square. The rest is the same as example 1.

Claims (10)

1. The adjustable wrench comprises a wrench main body (1) and a handle body (2), wherein a clamping opening (4) is formed in one end of the wrench main body (1), the handle body (2) is movably connected to the other end of the wrench main body (1), the adjustable wrench is characterized in that a movable block (3) capable of changing the clamping area of the clamping opening (4) is connected to the end portion of the wrench main body (1) in a sliding mode, and the handle body (2) is in transmission connection with the movable block (3).

2. The adjustable wrench according to claim 1, wherein a screw (5) is connected between the wrench body (1) and the handle body (2), the screw (5) is in threaded connection with the wrench body (1), and the movable block (3) is rotatably clamped at the end of the screw (5).

3. The adjustable wrench according to claim 2, wherein the handle body (2) is hollow, a matching block (6) is arranged in the cavity of the handle body (2), the matching block (6) is in key connection with the inner wall of the cavity of the handle body (2), and the matching block (6) is in threaded connection with the screw rod (5).

4. The adjustable wrench according to claim 2, wherein the handle body (2) is hollow, a matching block (6) is arranged in the cavity of the handle body (2), the matching block (6) is fixedly connected with the handle body (2), and the matching block (6) is matched with the screw rod (5) through a torque transmission structure.

5. Adjustable spanner according to claim 2, wherein the threaded rod (5) is slidably embedded in the shank body (2) by means of a torque transmission structure.

6. The adjustable wrench according to claim 1, wherein a sliding rod (7) is connected between the wrench body (1) and the handle body (2), the sliding rod (7) is slidably connected to the wrench body (1), the movable block (3) is rotatably connected to the end of the sliding rod (7), the wrench body (1) is slidably connected to an elastic locking block (8), and an axial locking structure is provided between the elastic locking block (8) and the sliding rod (7).

7. Adjustable spanner according to claim 1, characterized in that the clamping opening (4) is provided with a pawl (9).

8. An adjustable wrench according to claim 1, wherein the wrench body (1) is provided with a sliding slot (10) extending to the holding opening (4), and the movable block (3) is slidably connected in the sliding slot (10).

9. The adjustable wrench according to claim 8, wherein the movable block (3) comprises two movable block split bodies (11), a support rail (12) is fixedly connected to the inner wall of the sliding groove (10), and the two movable block split bodies (11) are fixedly connected through screws through the support rail (12).

10. Adjustable spanner according to any one of claims 1 to 9, characterized in that the shank (2) is rotatably journalled in the end of the spanner body (1).

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