KR20110011408A - Ratch type water pump plier - Google Patents

Abstract

PURPOSE: A latch type water pump pliers which securely can press objects is provided to be applied to a various standards of objects by engaging a pinion of an upper handle with a rack gear of a lower handle. CONSTITUTION: A latch type water pump pliers comprises a top steering wheel(20) and a bottom steering wheel(30). The top steering wheel is composed of a first engaging unit(21), a first connection unit(22) and a first handle unit. The bottom steering wheel is composed of a second engaging unit(31), a second connection unit(32) and a second handle unit. The bottom steering wheel is pivotally combined with the top steering wheel.

Description

Latch Type Water Pump Pliers {RATCH TYPE WATER PUMP PLIER}

The present invention relates to a pliers, and more particularly, the latch-type water which can adjust the distance between the bite according to the size of the workpiece by the upper handle slides relative to the lower handle in the state that the upper / lower handle is pivotally coupled Relates to a pump pliers.

In general, a plier is a work tool that doubles the grip force by using the lever principle, and a water pump plier, also called a slip joint plier, is a pipe work or nut such as gas or water. It is used to fasten and dismantle.

Here, the water pump pliers are formed by the upper and lower handles are pivotally coupled to each other, consisting of a bite portion, a connection portion, and a handle portion, the upper end of the slide groove formed by cutting on one side of the lower handle through a round bolt, nut or shaft It is coupled to one side of the handle.

At this time, the upper handle can be slid along the slide groove of the lower handle with a round bolt, nut or shaft, and accordingly, the distance between the upper handle's bite and the lower handle's bite is adjusted according to the slide movement of the upper handle. It is possible to tighten workpieces of various specifications.

Meanwhile, in the case of the conventional water pump pliers, the upper handle and the lower handle are pivotally coupled by round bolts, nuts or shafts in an overlapped state, and thus the bite formed at the tip of the upper handle and the lower handle is formed. As the parts do not engage precisely with each other, the grip force provided through the handle part may not be sufficiently transmitted to the workpiece.

In addition, in order to solve this problem, the upper handles and lower handles are formed so as to protrude to each other to engage with each other, not only is difficult to manufacture, but when a large force is applied, the central axis is connected to a round bolt, nut or shaft. The protruding portion may be deformed or broken.

In addition, in the case of the conventional water pump pliers, by forming a plurality of semicircular grooves corresponding to the outer circumferential surface of the round bolt, nut or shaft at the bottom of the slide groove, the outer circumferential surface of the connecting rivet is caught by the semicircular groove, thereby fixing the workpiece When tightened, the upper handle is not pushed back to ensure that pressure is transmitted to the workpiece.

However, in this case, the distance between the bite of the upper and lower handles is limited according to the length of the slide groove and the size of the round bolt, nut or shaft, and the size of the applicable workpiece is also limited.

In other words, if the length of the slide groove is short and the round bolts, nuts or shafts are thick, the number of semi-circular grooves must be formed in the slide grooves in a small number. It is difficult to apply to the workpiece of various specifications.

In addition, when the upper handle is moved along the slide groove in accordance with the specification of the workpiece, the lower handle is gripped and fixed by one hand so that the round bolt, nut, or shaft is not caught in the semi-circular groove. The handle is inconvenient to use because it needs to be moved while pulling upwards with respect to the lower handle.

On the other hand, if you want to cut the workpiece, there is an inconvenience to prepare a separate cutting tool, such as pliers (pincers) or nippers (nipper).

The present invention has been made to solve the problems described above, an embodiment of the present invention, the first handle portion and the first handle, and the first handle portion consisting of the first handle, the second grip portion and the second In the water pump pliers comprising a connecting portion, and a lower handle which is composed of a second handle and pivotally coupled to the upper handle, the insertion portion is formed on one side of the first connection portion, the second connection portion is inserted into the insertion portion, the connecting rivet It characterized in that the first connecting portion is pivotally coupled to surround both sides of the second connecting portion, it can be firmly pressed to tighten the workpiece, and is related to the easy-to-use latch-type water pump pliers.

According to a preferred embodiment of the present invention, the upper handle and the first handle portion and the first connection portion, and the first handle portion consisting of a second handle portion and the second connection portion, and the second handle portion and consists of the upper handle and pivot coupling In the water pump pliers comprising a lower handle, the insertion portion is formed in one side of the first connecting portion, the second connecting portion is inserted into the insertion portion, the first connecting portion to surround both sides of the second connecting portion by a connecting rivet A latch-type water pump pliers are provided that are pivotally coupled.

Here, the rack gear is provided on one side of the second connecting portion in the longitudinal direction, the upper side of the rack gear is provided with a pinion movable only in one direction by engaging with the rack gear, the connecting rivet is installed through one side of the pinion.

In addition, a guide rivet is installed at one side of the connecting rivet in parallel with the connecting rivet, the engaging portion protruding from the bottom of one side of the pinion is supported at the lower end of the guide rivet, and the other end of the pinion elastically biases the pinion in the rack gear direction. Spring is interposed.

At this time, the second connecting portion is made of a horizontal portion extending horizontally from the second bite portion, and the inclined portion inclined upward by a predetermined angle from the horizontal portion, the ball bearing is provided at the upper end of the inclined portion to make a cloud contact with the lower end of the first connecting portion The protrusion is formed.

In addition, cutting blades are formed inside the first and second bites, respectively.

According to the latch-type water pump pliers according to the preferred embodiment of the present invention, an insertion portion is formed on one side of the lower handle, and one side of the upper handle is inserted and accommodated in the insertion portion to pivotally rotate the work object. It can be pressurized firmly.

In addition, the pinion coupled to one side of the upper handle by a connecting rivet is engaged with the rack gear provided on one side of the lower handle so as to be slidably movable in only one direction, and thus it is applicable to a workpiece of various standards.

In addition, simply press the upper handle against the lower handle, the slide movement of the upper handle is made, so it is possible to easily grip the workpieces of various specifications because the work is simply pressed by pressing the upper handle without the need to adjust to the workpiece. This is easy.

In addition, since the blade for cutting wires and cables is formed inside the stitching portion, cutting work for the workpiece is also possible.

Hereinafter, a preferred embodiment of a latch-type water pump pliers according to an embodiment of the present invention will be described with reference to the accompanying drawings. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description.

In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout the specification.

In addition, the following examples are not intended to limit the scope of the present invention but merely illustrative of the components set forth in the claims of the present invention, which are included in the technical spirit throughout the specification of the present invention and constitute the claims Embodiments that include a substitutable component as an equivalent in the element may be included in the scope of the present invention.

Example

1 is a perspective view of a latch-type water pump pliers according to an embodiment of the present invention, Figure 2 is an exploded perspective view of a latch-type water pump pliers according to an embodiment of the present invention, Figure 3 according to an embodiment of the present invention Figure 4 is a state of use showing the first bite and the second bite open state, Figure 4 is a use state showing the state that the lower end of the upper handle is supported on the ball bearing according to an embodiment of the present invention, Figure 5 is According to one embodiment is a use state diagram showing the appearance of closing the first and second bite portion.

As shown in Figure 1 and 2, the latch-type water pump pliers 10 according to an embodiment of the present invention is the upper handle 20 and the lower handle pivotally coupled to each other by a connecting rivet 40. 30, wherein the upper handle 20 and the lower handle 30 are composed of a bite portion 21 and 31, a connecting portion 22 and 32 and a handle portion 23 and 33, respectively.

That is, the upper handle 20 is the first grip portion 21 which is in contact with one side of the workpiece, such as a pipe or nut, and the first connecting portion 22 formed to extend rearward from one side of the first grip portion 21. ) And a first handle portion 23 extending from the first connection portion 22, the lower handle 30 is in contact with the other side of the workpiece and grips the workpiece with the first grip portion 21. The second engagement portion 31, the second connection portion 32 is formed to extend rearward from one side of the second engagement portion 31, and the second handle portion 33 is formed extending from the second connection portion (32) Is made of.

In this case, the mutually opposing surfaces 210 and 310 of the first stitch portion 21 and the second stitch portion 31 are each formed with bent portions 211 and 311 inward to grip the workpiece having an angle. Preferably, each of the bent portion (211,311) is preferably arranged alternately up and down, the lower end is preferably formed to be in contact with each other so as to pick up the workpiece of a thin thickness.

At this time, the cutting blades 212 and 312 are formed on the inner side of the first stitch portion 21 and the second stitch portion 31, that is, the upper surface facing the first stitch portion 21 and the second stitch portion 31. It is desirable to be able to cut a pipe or a workpiece such as a wine or a cable.

Meanwhile, a plurality of teeth 213 and 313 are formed on the mutually opposing surfaces 210 and 310 of the first stitch portion 21 and the second stitch portion 31 so as to firmly support the workpiece. It is preferable that the teeth 213a and 313a having a small thickness and height are formed so that the object can be picked up, and the teeth and the teeth having a large thickness and height are formed in the portion where the bent portions 211 and 311 are formed to hold a thick pipe or nut. Preferably, 213b and 313b are formed.

The first connector 22 is extended to be inclined obliquely upward from the upper side of the first engagement portion 21, and the first handle 23 is formed to extend from the first connector 22. The outer circumferential surface of the part 23 is preferably covered with a cover 230 made of leather or synthetic resin to prevent injury to the operator and to prevent slipping during operation.

The second connecting portion 32 extends from the upper side of the second engagement portion 31 to the rear side.

Here, the second connecting portion 32 is a horizontal portion 321 is formed to extend horizontally from the upper side of the second grip portion 31 to the rear, and the inclined portion extending in the rear upward inclined by a predetermined angle from the horizontal portion 321 322, one end of the inclined portion 322 is formed to protrude forward and upward at a predetermined angle, and the upper end of the protrusion 323 is provided with a ball bearing 323a. 1 is in contact with the lower end of the connecting portion 22.

At this time, the second handle portion 33 is formed to extend from the inclined portion 322, the cover 330 made of leather or synthetic resin similar to the first handle portion 23 on the outer peripheral surface of the second handle portion 33 It is desirable to cover.

Since the first connector 22 and the second connector 32 are pivotally coupled by the connecting rivet 40, the upper handle 20 and the lower handle 30 can rotate with respect to the connecting rivet 40. Thus, the first gripping portion 21 and the second gripping portion 31 will grip or release the workpiece, which will be described in detail below.

An insertion part 221 having an upper and lower opening is formed at one side of the first connection part 22 in a length direction of the first connection part 22, and the second connection part 32 is inserted into the insertion part 221. In a state where the second connecting portion 32 is accommodated in the insertion portion 221 of the first connecting portion 22, the first connecting portion 22 surrounds both sides of the second connecting portion 32.

Here, the slide groove 324 is formed on one side of the second connection portion 32 in the longitudinal direction of the second connection portion 32, the rack gear having a plurality of locking jaws (325a) at the bottom of the slide groove 324 A 325 is formed and a pinion 326 meshing with the rack gear 325 is provided above the rack gear 325 to slide along the rack gear 325.

In this case, the pinion 326 may be formed of, for example, a block having a rectangular cross-sectional shape, and a plurality of locking protrusions 326a corresponding to the locking projections 325a of the rack gear 325 are provided at the bottom thereof so that the rack gear ( The 325 and the pinion 326 may be engaged with each other. The connecting rivet 40 penetrates one side of the pinion 326 and both ends of the connecting rivet 40 are respectively supported on both outer sides of the first connecting portion 22.

At this time, as shown in Figure 3, the locking step (325a) is inclined toward the front front is vertical and the rear is formed to be inclined, the locking projection (326a) is inclined toward the rear so that the front is inclined and the rear is vertical Is formed.

Therefore, when the locking projection 326a of the pinion 326 is engaged with the locking step 325a of the rack gear 325, the pinion 326 can freely slide forward on the rack gear 325. The upper handle 20 coupled to the connecting rivet 40 penetrating the pinion 326 is pushed backward with respect to the lower handle 30 so that the workpiece is unexpectedly moved. The gripping can be prevented.

In addition, in order to securely engage the locking projection 325a and the locking projection 326a, the guide rivet 50 is installed in parallel with the connecting rivet 40 in the slide groove 324 spaced apart from the connecting rivet 40 The hooking portion 326b protrudes upward from one side of the lower end adjacent to the guide rivet 50 in the pinion 326 to support the lower end of the guide rivet 50, and the other upper end of the pinion 326. Spring 327 is interposed between the upper side of the slide groove 324 in a compressed state, the other end of the pinion 326 is provided with a groove 326c, one end of the spring 327 is fixed to the groove 326c The other end of the slide groove 324 is supported to be slidably movable.

Therefore, the pinion 326 is elastically biased in the direction of the rack gear 325 by the elastic restoring force of the spring 327, and at this time, the engaging portion 326b of the pinion 326 is supported by the lower end of the guide rivet 50, The locking projections 326a formed at the opposite lower end thereof are firmly engaged with the locking projections 325a of the rack gear 325.

On the other hand, both ends of the guide rivet 50 is also supported on both outer sides of the first connecting portion 22, like the connecting rivet 40, respectively, to freely move by separating the locking projection (326a) from the locking jaw (325a) In this case, the upper handle 20 is pulled upward with respect to the lower handle 30, and the connecting rivet 40 is rotated upward with respect to the guide rivet 50, thereby rotating the pinion 326 upward. 326a is separated from the locking step 325a.

At this time, the connecting rivet 40 and the guide rivet 50 are rotated in the space in the slide groove 324.

Adjusting the distance between the first grip portion 21 and the second grip portion 31 in accordance with the specification of the workpiece, by moving the upper handle 20 to the rear handle 30 to the rear of the first grip portion ( The workpiece is positioned between 21 and the second engagement portion 31, and then simply presses the upper handle 20 against the lower handle 30.

That is, a protrusion 323 having a ball bearing 323a is formed to protrude from the upper end of the second connector 32 of the lower handle 30, so that the ball bearing 323a is the first connector 22 of the upper handle 20. The bottom portion of the first connection portion 22 in which the ball bearings 323a are in rolling contact is formed to be slightly inclined upward, so that the moment of pressing the upper handle 20 downward, The first connector 22 slides forward while contacting the ball bearing 323a in a rolling manner, thereby narrowing the distance between the first engagement portion 21 and the second engagement portion 31.

In this case, the inclined surface of the locking protrusion 326a moves over the inclined surface of the locking jaw 325a, as described above, and the workpiece is gripped between the first engagement portion 21 and the second engagement portion 31. When the vertical surface of the locking projection 326a and the vertical surface of the locking projection 325a are engaged with each other, the upper handle 20 is prevented from moving backward to firmly hold the grip state.

At this time, in order to move the upper handle 20 to the front by simply pressing the upper handle 20 against the lower handle 30, the inclination angle of the portion in contact with the ball bearing 323a in the first connection portion 22, The angle between the horizontal portion 321 of the second connecting portion 32 and the central axis 323b of the ball bearing 323a and the angle of the inclined portion 322 with respect to the horizontal portion 321 of the second connecting portion 32 are determined. It is necessary to select an appropriate value, considering the ease of use and the moving distance according to the pressing force, the inclination angle of the ball contact portion 323a and the rolling contact portion of the first connector 22 is 5 °, the second connector 32 The angle between the horizontal portion 321 of the ball bearing 323a and the central axis 323b of the ball bearing 323a is 45 °, and the angle of the inclined portion 322 with respect to the horizontal portion 321 of the second connecting portion 32 is 18.5 °. Is preferably.

Operation of the latch-type water pump pliers 10 according to an embodiment of the present invention is made as follows.

As shown in FIG. 3, in order to maximize the distance between the first engagement portion 21 and the second engagement portion 31, the upper handle 20 is pulled upward with respect to the lower handle 30. As the connecting rivet 40 rotates upward with respect to the guide rivet 50, the rack gear 325 is rotated by pressing the pinion 326 in a state in which the front end portion 326b is supported by the lower end of the guide rivet 50. The locking protrusion 326a of the pinion 326 is separated from the locking jaw 325a of the upper side, and the pinion 326 is moved to the rear end of the rack gear 325 when the upper handle 20 is moved rearward. Done.

Thereafter, as shown in FIG. 4, the workpiece is positioned between the first engagement portion 21 and the second engagement portion 31, and the upper handle 20 is pressed by pressing in the direction of the lower handle 30. As the ball bearing 323a of the second connector 32 contacts the lower end of the first connector 22 as shown in FIG. 5, the upper handle 20 slides forward with the first connector 22. do.

At this time, the locking protrusion 326a of the pinion 326 moves over the locking jaw 325a of the rack gear 325 and moves the outer circumferential surfaces of the work object to the first and second stitches 21 and 31. ) When the pinion 326 is pushed toward the rack gear 325 by the elastic restoring force of the spring 327, the locking protrusion 326a and the locking jaw 325a are engaged with each other, in this case, the locking jaw 325a. By engaging the vertical surface of the locking projections (326a) in the vertical surface of the), the pinion (326) is prevented from moving to the rear of the rack gear 325, thereby preventing the unexpected release of the workpiece, while firmly It is possible to transfer enough force to tighten or loosen the workpiece by gripping it.

At this time, by appropriately selecting the number and size of the locking projections (325a) and the locking projections (326a), of course, it is possible to finely adjust the interval between the first engagement portion 21 and the second engagement portion (31).

In addition, as the lower handle 30 pivotally engages in the insertion portion 221 of the upper handle 20, unlike the conventional method, the first grip portion 21 formed at the tip of the upper handle 20 is different from the conventional art. And the second engagement portion 31 formed at the tip of the lower handle 30 can be precisely engaged to grip the work object firmly, thereby being transmitted through the first and second handles 33. The work efficiency is high because the force is sufficiently transmitted to the workpiece.

1 is a perspective view of a latch-type water pump pliers according to an embodiment of the present invention.

Figure 2 is an exploded perspective view of a latch-type water pump pliers according to an embodiment of the present invention.

Figure 3 is a use state showing the state of opening the first bite portion and the second bite portion according to an embodiment of the present invention.

Figure 4 is a use state showing the state that the lower end of the upper handle is supported on the ball bearing according to an embodiment of the present invention.

Figure 5 is a use state showing the appearance of closing the first bite and the second bite in accordance with an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

10: latch type water pump pliers 20: upper handle

21: first engagement portion 22: first connection portion

23: first handle portion 30: the lower handle

31: second engagement portion 32: second connection portion

324: Slide groove 325: Rack gear

326: pinion 327: spring

33: second handle 40: connecting rivet

50: guide rivet

Claims (5)

Water pump pliers comprising an upper handle comprising a first grip portion, a first connection portion, and a first handle portion, and a lower handle pivotally coupled to the upper handle and comprising a second handle portion, a second connection portion, and a second handle portion. To An insertion part is formed on one side of the first connection part, and the second connection part is inserted into the insertion part, and the first connection part is pivotally coupled to surround both sides of the second connection part by a connection rivet. Latched water pump pliers. The method according to claim 1, A rack gear is provided at one side of the second connection part in a longitudinal direction, and an upper side of the rack gear is provided with a pinion which engages with the rack gear and is movable only in one direction. The connecting rivet penetrates through one side of the pinion. Latch type water pump pliers, characterized in that is installed. The method according to claim 2, One side of the connecting rivet is provided with a guide rivet parallel to the connecting rivet, the engaging portion protruding from one side lower end of the pinion is supported on the lower end of the guide rivet, the other side of the pinion the pinion the rack gear Latch type water pump pliers, characterized in that the spring is elastically biased in the direction. The method according to claim 1, The second connecting portion is composed of a horizontal portion extending horizontally from the second bite portion, and an inclined portion inclined upward by a predetermined angle from the horizontal portion, and the ball bearing to the cloud contact with the lower end of the first connecting portion at the upper end of the inclined portion Latch type water pump pliers, characterized in that the protrusion is provided. The method according to claim 1, Latched water pump pliers, characterized in that the cutting blade is formed inside the first and second bite portion.

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