CN215201837U - Pulling tool - Google Patents

Abstract

The utility model discloses a pulling tool, including the handle, first component and the second of pulling out plays and pulls out the component, first component and the handle of pulling out is connected, first component and the second of pulling out plays and pulls out the notch that the component is equipped with the correspondence respectively, treat to pull out the fastener and can arrange in two notches, first component and the second of pulling out plays and pulls out component relative motion, the notch that first component was pulled out together and the notch relative motion that the component was pulled out to the second play press from both sides tight locking and treat to pull out the fastener, during swing handle, the second plays to pull out the component and treats the fulcrum of pulling out the fastener for pulling out. The utility model discloses a pull-out power comes from the first notch that pulls out the component, the second pulls out the component and treats to pull out the clamping force and the static friction power that add on the fastener surface, no matter the fastener has or not hood, this pull-out instrument still can accomplish the fastener and pull out, and the second pulls out the component and can fill up the high first component of pulling out together, increases the effect arm of force of pulling out to obtain bigger pull-out moment. Just the utility model discloses simple structure, low in production cost.

Description

Pulling tool

Technical Field

The utility model relates to a hand tool, more specifically say, it relates to a pull-out instrument.

Background

Current extraction tool is applicable to the area generally and nails the cap nail and extracts including taking nail function hammer, nail pulling rod, crow bar etc. and after one section distance is extracted to the nail, surpass nail pulling tool and pull out highly the back by the biggest, current some extraction tools will be unable to pull out the nail, need extract with the help of other instruments, for example pliers etc. other non-professional nail pulling tools are not only inefficient, also can produce certain destruction simultaneously and treat risks such as nail pulling plank. When a nail-cap-free nail or other rod-shaped or strip-shaped fasteners are pulled out, the existing pulling tool cannot work. Still some current extraction tools, the design has the notch of pulling out, and with the notch with wait to pull out the mounting and become certain angle centre gripping then pull out, but when the fastener wedged fastener acceptors such as wood, wall body, the joint frictional force between fastener and acceptors such as wood, wall body often can be greater than the frictional force between extraction tool and fastener, like this at the extraction fastener process, the extraction tool can take place to skid with the fastener, also can't accomplish the extraction. Therefore, the market needs a pulling tool which is suitable for fasteners such as nails, rods and strips with or without nail caps, and the frictional force between the pulling tool and the fasteners is adjustable and always greater than the frictional force between the fixing piece and wood, wall fastener receptors and the like. The utility model discloses a utility model with publication number CN209831544U specially does benefit to 24 days 12 months in 2019 and discloses a single armed nail puller, including base and digging arm, the base includes first pincers mouth, first pincers tail and 2 pincers ears, first pincers mouth, first pincers tail and 2 pincers ear integrated into one piece, set up the activity chamber that runs through downwards between 2 pincers ears, the digging arm includes the handle, the handle lower extreme sets up second pincers mouth, the digging arm passes activity chamber and base rotatable coupling, first pincers tail end sets up the second pincers tail, second pincers tail end sets up the third pincers tail, first pincers tail end and second pincers tail head end articulate, second pincers tail end and third pincers tail head end articulate. The utility model discloses a play and can directly not snap off when making the nail pulled out, make the in-process of pincers mouth interlock can not take place the skew, support and protect pincers mouth can not damage because of bumping or rubbing with other article. But the utility model has complex structure and high production cost.

SUMMERY OF THE UTILITY MODEL

The utility model provides a simple structure, the suitability to different fasteners is stronger simultaneously to the simple structure to current extraction instrument to fasteners such as nail-free cap nail or other bar-shaped, strip to and with the fastener receptor between the tight fastener of joint play extract the effect not good, some structure complicacy, manufacturing cost is higher, for overcoming these defects, the utility model provides a pull-out instrument that the power is big is just extracted to the suitability of taking out.

The technical scheme of the utility model is that: the utility model provides a pulling tool, including the handle, first component and the second component of pulling out are pulled out together, first component of pulling out is connected with the handle, first component of pulling out is equipped with corresponding notch respectively with the second component of pulling out, treat that the fastener can arrange in two notches, first component of pulling out can relative motion with the second component of pulling out, the notch that first component of pulling out was pulled out together can move relatively with the notch that the second component of pulling out and press from both sides tight locking and treat the fastener of pulling out, during the swing handle, the second is played and is pulled out the fulcrum that the component was for pulling out the fastener of waiting to pull out. The first pulling-up component and the second pulling-up component are overlapped, the second pulling-up component provides a swing fulcrum for the whole pulling-up tool to pull up the fastener to be pulled out, when the fastener to be pulled out is clamped in the notch of the second pulling-up component, the moving range of the second pulling-up component is limited, and the first pulling-up component can move relative to the second pulling-up component, so that along with the continuous unidirectional force application of the handle, the dislocation range between the notch of the first pulling-up component and the notch of the second pulling-up component is larger and larger, the clamping force and the static friction force of the fastener to be pulled out are also increased gradually, meanwhile, the clamping force and the static friction force of the fastener to be pulled out of the first pulling-up component and the second pulling-up component form a pulling-up moment relative to the second pulling-up component, and when the pulling-up moment exceeds the joint friction moment between the fastener to be pulled out and the fastener receptor, the fastener to be pulled out can be pulled out. The utility model discloses a pull-out power comes from the first notch that pulls out the component, second pull-out component and treats and pull out the power of holding and the static friction that add on the fastener surface, even the fastener does not have the hood, this pull-out instrument still can accomplish the fastener and pull out. The second pulling-up component can heighten the first pulling-up component, so that the force arm of the pulling-up action is increased, and a larger pulling-up moment is obtained. The pulling tool can complete the pulling operation with high difficulty by pulling the first pulling member and the second pulling member relatively, and has simple structure and easy realization.

Preferably, the first pulling-up component is arc-shaped, and the notch of the first pulling-up component is positioned in the middle of the arc. In the using process, the first pulling component moves along with the handle, the first pulling component is made into an arc shape, the appearance is relatively smooth, and interference and blockage are not easy to occur when the first pulling component moves relative to the second pulling component. The notch that pulls out the component together is located the arc middle part for this pulling out instrument is positive reverse operation all can be accomplished and is pulled out, and it is more convenient to use.

Preferably, the second pulling-up component is also arc-shaped and matched with the arc-shaped first pulling-up component, and the notch of the second pulling-up component is arranged in the middle of the arc-shaped second pulling-up component. The second pulling component is matched with the first pulling component in an arc shape, and the second pulling component and the first pulling component can clamp the fastener to be pulled through concentric relative rotation after being overlapped.

Preferably, the second pulling-up member comprises a main body section and an extension section, the extension section is arranged at two ends of the main body section, the extension section is also arc-shaped, and the arc radius of the extension section is larger than that of the main body section. The second pulling-up component is provided with an extension section, the size of the second pulling-up component is lengthened, and the end part of the extension section can be used as a handle swinging fulcrum during operation, so that the pulling-up force has a longer acting force arm, and a larger pulling-up moment is obtained.

Preferably, the second pulling-up member is provided with a connecting arm, and the second pulling-up member is pivotally connected with the handle through the connecting arm. In the using process, when the handle is swung, the handle rotates by taking a pivot point between the second pulling member and the handle as a rotating shaft to drive the first pulling member to rotate, so that the relative motion between the first pulling member and the second pulling member is realized, and sufficient clamping force and pulling static friction force of the fastener are generated.

Alternatively, the first pulling member and the second pulling member are slidably connected through a cam-and-chute fit mechanism, and the first pulling member and the second pulling member relatively slide along the arc-shaped circumferential direction of the first pulling member. The first pulling component and the second pulling component can also realize relative movement through the sliding connection of the convex block-sliding groove matching mechanism, and generate enough clamping force and pulling static friction force of the fastener.

Preferably, a radial separation preventing structure which can prevent the first pulling-up component and the second pulling-up component from separating along the arc-shaped radial direction of the first pulling-up component is arranged between the first pulling-up component and the second pulling-up component. The lug-chute matching mechanism can also realize that the first pulling component and the second pulling component are prevented from separating, but the lug and the chute need to be processed into specific shapes, such as a dovetail shape and a T shape, so that the processing difficulty is increased. The structure for preventing radial separation can be independently arranged and is specially used for radial limiting, so that the structure of the lug-chute matching mechanism can be simplified.

Alternatively, the second pull-up member is magnetically coupled with the first pull-up member. The second pulling component and the first pulling component can be connected through magnet adsorption, the structure is simple, and the connection is convenient.

Preferably, the notches of the first pulling-up component and the second pulling-up component are provided with convex ribs for increasing friction force. The arrangement of the convex ribs can increase the roughness of the surfaces of the notches of the first pulling component and the second pulling component, and is beneficial to increasing the clamping force and pulling static friction force of the fastener.

Preferably, a dovetail-shaped nail nipping notch or a nail nipping hammer is arranged at one end of the handle opposite to the end where the first pulling-up member is located. The other end of the handle is provided with a nail pulling notch or a nail pulling hammer which can be used for pulling a common cap fastener, so that the two ends of the pulling tool can perform functional division work, and the function is more comprehensive.

The utility model has the advantages that:

the function is more comprehensive. The utility model discloses a pull-out power comes from the first notch that pulls out the component, the second pulls out the component and treats to pull out the clamping force and the static friction power that add on the fastener surface, no matter the fastener has or not hood, this pull-out instrument still can accomplish the fastener and pull out, and the second pulls out the component and can fill up the high first component of pulling out together, increases the effect arm of force of pulling out to obtain bigger pull-out moment.

Simple structure and low production cost. The utility model discloses a first pull out component, second together and pull out the relative motion between the component and can accomplish the great operation of pulling out of the degree of difficulty, and the part is few, simple structure, and easily product realization, reduction in production cost.

Drawings

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

FIG. 2 is a front view of the present invention;

fig. 3 is a schematic view of a back structure of the present invention;

FIG. 4 is an exploded view of a component of the present invention;

fig. 5 is another schematic structural diagram of the present invention;

fig. 6 is an exploded view of another embodiment of the present invention.

In the figure, 1-handle, 2-first pulling-up component, 3-second pulling-up component, 4-claw hammer, 5-connecting arm, 6-main body section, 7-extension section, 8-claw gap, 9-T-shaped bulge, 10-T-shaped groove, 11-L-shaped baffle, 12-square groove, 13-first pulling-up component notch, 14-second pulling-up component notch and 15-pivot.

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 2, a pulling tool comprises a handle 1, a first pulling member 2 and a second pulling member 3 which are overlapped, wherein the first pulling member 2 is connected with the handle 1, the first pulling member 2 and the second pulling member 3 are respectively provided with a corresponding notch which is a first pulling member notch 13 and a second pulling member notch 14, a fastener to be pulled can be placed in the two notches, the pulling tool is characterized in that the first pulling member 2 and the second pulling member 3 can move relatively, the first pulling member notch 13 and the second pulling member notch 14 can move relatively to clamp and lock the fastener to be pulled, and when the handle 1 is swung, the second pulling member 3 is a fulcrum for pulling the fastener to be pulled. The first pulling-up component 2 is arc-shaped, and the notch 13 of the first pulling-up component is positioned in the middle of the arc. The second pulling-up member 3 is also arc-shaped and matched with the arc-shaped first pulling-up member 2, and the notch 14 of the second pulling-up member is arranged in the middle of the arc-shaped second pulling-up member 3. The second pulling-up member 3 comprises a main body section 6 and an extension section 7, wherein the extension section 7 is arranged at two ends of the main body section 6, the extension section 7 is also arc-shaped, and the arc radius of the extension section 7 is larger than that of the main body section 6. The second pulling member 3 is provided with a connecting arm 5, the connecting arm 5 and the second pulling member 3 are integrally formed, the connecting arm 5 is provided with a shaft hole, a pivot 15 is fixed at the proximal end portion of the handle 1, and the pivot 15 is rotatably connected in the shaft hole, so that the second pulling member 3 is pivotally connected with the handle 1 through the connecting arm 5. The first and second pull-up member notches 13 and 14 are provided with ribs for increasing friction. The end of the handle 1 opposite to the end where the first co-pulling component is located is provided with a dovetail-shaped nail nipping gap 8.

When the pulling tool is used, a fastener to be pulled is clamped into the notch 14 of the second pulling member, the movable range of the second pulling member 3 is limited, and the first pulling member 2 can move relative to the second pulling member 3, so that along with the continuous unidirectional stress of the handle 1, the dislocation range between the notch 13 of the first pulling member and the notch 14 of the second pulling member is larger and larger, the clamping force and the static friction force of the fastener to be pulled are gradually increased, meanwhile, the clamping force and the static friction force of the fastener to be pulled of the first pulling member 2 and the second pulling member 3 form a pulling moment relative to the second pulling member 3, and when the pulling moment exceeds the joint friction moment between the fastener to be pulled and a fastener receptor, the fastener to be pulled can be pulled out.

Example 2:

as shown in fig. 3 and 4, the first pulling member 2 and the second pulling member 3 are slidably connected by a cam-and-slot engagement mechanism, and the first pulling member 2 and the second pulling member 3 relatively slide along the arc-shaped circumferential direction of the first pulling member 2. The lug-chute matching mechanism comprises a T-shaped groove 10 on the second pulling component 3 and a T-shaped protrusion 9 on the first pulling component 2, the T-shaped groove 10 is located on a concave surface of the second pulling component 3 and is arranged along the arc-shaped circumferential direction of the second pulling component 3, the T-shaped protrusion is located on a convex surface of the first pulling component 2, and the T-shaped protrusion is embedded in the T-shaped groove 10 in a matching manner, so that the T-shaped protrusion 9 slides in the T-shaped groove, and the relative movement of the first pulling component 2 and the second pulling component 3 is realized. The rest is the same as example 1.

Example 3:

the lug-chute matching mechanism comprises a T-shaped groove on the first pulling component 2 and a T-shaped protrusion on the second pulling component 3, the T-shaped groove is positioned on the convex surface of the first pulling component 2 and is arranged along the arc-shaped circumference of the first pulling component 2, the T-shaped protrusion is arranged on the concave surface of the second pulling component 3, and the T-shaped protrusion is embedded in the T-shaped groove in a matched mode, so that the T-shaped protrusion slides in the T-shaped groove. The rest is the same as example 2.

Example 4:

the first pulling component 2 and the second pulling component 3 are provided with a radial separation prevention structure which can prevent the first pulling component 2 and the second pulling component from radial separation along the arc shape of the first pulling component 2, the radial separation prevention structure is an L-shaped baffle plate 11 welded on the second pulling component 3, the L-shaped baffle plate 11 is arranged at the outer edge of the concave surface of the second pulling component 3 and is provided with an outer blocking surface and an upper blocking surface, and the distance from the upper blocking surface to the concave surface of the second pulling component 3 is matched with the thickness of the first pulling component 2. The cam-and-groove co-operating means comprise a square groove 12 on the second pull-up member 3 and a cylindrical pin on the first pull-up member 2. The rest is the same as example 2.

When the first pulling member 2 and the second pulling member 3 move relatively, the upper blocking surface and the outer blocking surface of the L-shaped baffle 11 and the concave surface of the second pulling member 3 form a U-shaped opening, and the first pulling member 2 is clamped in the U-shaped opening, so that the first pulling member 2 cannot be separated from the second pulling member 3 in the radial direction.

Example 5:

as shown in fig. 5, the second pull-up member 3 is provided with a magnet magnetically connected to the first pull-up member 2. The rest is the same as example 2.

Example 6:

as shown in fig. 6, the handle 1 is provided with a claw hammer 4 at an end opposite to the end where the first pulling-up member is located. The rest is the same as example 1.

Example 7:

the cam-and-groove engagement mechanism comprises a dovetail groove on the second puller member 3 and a trapezoidal protrusion on the first puller member 2. The rest is the same as example 2.

Claims (10)

1. The utility model provides a pulling tool, including handle (1), first component (2) and the second component (3) of pulling out are pulled out together, first component (2) of pulling out is connected with handle (1), first component (2) of pulling out is equipped with corresponding notch respectively with the second component (3) of pulling out, it can arrange two notches in to wait to pull out the fastener, characterized by first component (2) of pulling out is pulled out with the second and is pulled out component (3) relative motion, the notch of first component (2) of pulling out and the notch of second component (3) of pulling out can move relatively and press from both sides tight locking and wait to pull out the fastener, when swing handle (1), the second is played and is pulled out component (3) for pulling out the fulcrum of waiting to pull out the fastener.

2. Extraction tool according to claim 1, characterised in that the first extraction element (2) is curved and that the notch of the first extraction element (2) is located in the middle of the curve.

3. Extraction tool according to claim 2, characterised in that the second extraction element (3) is also curved and matches the curve of the first extraction element (2), the notch of the second extraction element (3) being placed in the middle of the curve of the second extraction element (3).

4. Extraction tool according to claim 3, characterised in that the second extraction member (3) comprises a main section (6) and an extension section (7), the extension section (7) being provided at both ends of the main section (6), the extension section (7) also being curved, and the curved radius of the extension section (7) being larger than the curved radius of the main section (6).

5. Extraction tool according to claim 1, characterised in that the second extraction element (3) is provided with a connecting arm (5), the second extraction element (3) being pivotally connected to the handle (1) via the connecting arm (5).

6. Extraction tool according to claim 1, characterised in that the first extraction member (2) and the second extraction member (3) are slidingly connected by means of a cam-and-slot co-operating mechanism, and that the first extraction member (2) and the second extraction member (3) slide relatively in the circumferential direction of the arc of the first extraction member (2).

7. Extraction tool according to claim 6, characterised in that between the first extraction element (2) and the second extraction element (3) there is provided a radial disengagement prevention structure preventing the two from separating radially along the arc of the first extraction element (2).

8. Extraction tool according to claim 1, characterised in that the second extraction member (3) is magnetically connected to the first extraction member (2).

9. Extraction tool according to claim 1, characterised in that the grooves of the first extraction element (2) and the second extraction element (3) are provided with ridges for increasing the friction.

10. A pulling tool according to any one of claims 1 to 9, characterized in that the end of the handle (1) opposite to the end where the first pulling member is located is provided with a dovetail-shaped pulling notch (8) or a pulling hammer.

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