KR101069739B1 - Prefabricated wrench with adjustable bite and bite depth - Google Patents

Abstract

Disclosed is a prefabricated plumbing tool with free adjustment of bite width and bite depth. According to the present invention, an outer rail 15 is formed on a lower surface thereof, an outer jaw 10 having at least one rack 11 formed on a side thereof, and an inner rail 23 formed thereon and slidably adhere to the outer rail 15. Being inner jaw 20; And at least one rack clamp 31 and a conveying screw 33 for conveying the inner jaw 20 and conveying a combination of the outer jaw 10 and the inner jaw 20 therein in a bite direction. It is configured to include a fixed bush 30 to receive the movement; the fixed bush 30 can be completely separated from the outer jaw 10 or the inner jaw 20 and the inner jaw 20 is the inner long (21) ) Is formed in a L-shape consisting of a long side formed, and a short side formed with an inner short end 22, characterized in that the inner rail 23 is further formed on the surface formed with the chuck. The present invention can configure the wrench or vise pliers in various working modes through various assembly disassembly. In addition, the bite depth can be adjusted through the extended jaws and interchangeable jaws, and the combination of the prevention of torsion due to the rail coupling of the inner and outer jaws and the fast moving and strong tightening structure by the combined movement of the rack / feed screw, Quick and easy adaptation to pipe work.

Description

Wrench kit that has changeable and adjustable jaws

The present invention in the piping tool represented by a wrench or vise pliers, can adjust the bite depth through the extended jaws and interstitial jaws, the torsion prevention and coupling movement of the rack / transfer screw according to the rail coupling of the inner and outer jaws The combination of fast moving and strong tightening structure allows quick and easy application to a wide range of pipes.

Plumbing tools, commonly referred to as tools used for plumbing work, include pipe wrenches used to fasten or dismantle pipes, and vise pliers used to bite and fix pipes. The double pipe wrench is designed to bite the jaws (jaw = bite jaw) slightly because it needs to make a lot of rotations by biting the pipe, making it easier to loosen the jaws or the ratchet wheel inside the rotary jaws. The jaws can be rotated in the opposite direction without loosening.

The vice pliers, on the other hand, have no ratchet rotation structure and are tooth-shaped with smooth curves in the shape of the chuck (chuck) in order to effectively hold and fix a pipe of a relatively wide diameter range.

Most of the jaw bite structure is a sliding type, which is a structure in which both jaws are opened to bite pipes. At this time, even if the opening width of the jaw, that is, the sliding width is enlarged, no matter how much the bite depth of the jaw, i.

Therefore, most plumbing tools are manufactured by appropriately adjusting the size of the jaws within the grade by dividing the grade by the applicable pipe diameter.

The following prior arts introduce a typical worm / worm wheel wrench, a rack and worm wheel combined wrench, or a rack only wrench.

Pipe Wrench Using One Hand Quick Adjusting Pipe Wrench 3) Public utility model 20-1999-0033680 pipe wrench 4) Registered Utility Model No. 20-0280972 Pipe Wrench

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A typical worm / worm wheel type wrench of the prior arts introduced is capable of strong and secure tightening because of jaws moving by continuous movement of threads, but it is slow. In addition, the wrench using only the rack has the advantage that the jaw can be moved quickly by the simple operation of the rack clamp, but the rack teeth are extremely small or finely adjusted to prevent the bite width from intermittently changing according to the pitch size of the rack. It simply relies on hook-clamps, etc., so it cannot exert strong grip.

To improve this, Utility Model Registration No. 20-0280972 Pipe Wrench uses a worm gear as if it is a rack, and has a structure in which the worm wheel can be temporarily removed from the thread and moved. This is a good structure that can quickly adjust the bite width while maintaining strong bite force, but also has the limitation that the bite depth can not be adjusted like ordinary wrenches.

Although the rack / worm wheel wrenches and the quick-adjustable rack-pinion wrenches have conveniences in particular fields, they are difficult to use for various tasks, particularly for rough pipe work outdoors for pipes of various diameters.

The present invention is to overcome the conventional technical limitations as described above, while ensuring a sufficient bite strength, the bite width control can be quickly and easily applicable to pipes of extremely wide thickness.

In addition, all major parts of the wrench are disassembled and assembled in order to adjust the depth of bite, but the outer and inner jaws are prevented from distorting the alignment of the outer and inner jaws in the tightening operation where strong force is applied accordingly. Rails are formed over all sliding sliding surfaces so that they have an accurate and strong bite structure similar to the convenience of disassembly and general non-assembled wrenches.

The present invention for solving this object is made based on the following unique technical concept.

First, the outer jaw and the inner jaw were composed of a fully detachable assembly type so that the extension jaw can be fitted to the outer jaw in some cases, or the bite surface of the inner jaw can be inserted into the inner long and inner short to change directions as necessary. This structure not only greatly increases the adjustable bite width of the entire wrench, but also allows the bite depth to be adjusted by changing the shape of the jaws.

In this process, the adjustment movement of the wrench is undertaken by a fixed bush that houses both the outer jaw and the inner jaw at one time. Perform the adjustment. Also, due to the nature of the prefabricated structure, the alignment between the outer jaw and the inner jaw may be misaligned, and there is a concern that the fixed bushing may not be a smooth and accurate sliding motion. In order to prevent this, rails are formed over all sliding motion surfaces of the outer jaw and the inner jaw to be configured to exert strong bite force without twisting in the left and right directions.

Next, the present invention adds a screw feeder to the lower end of the fixed bush equipped with the rack clamp while allowing the quick and wide adjustment of the horizontal jaw width of both jaws by the rack-rack clamp operation method, and the inner jaw of the feed screw bite force. By directly receiving, it was possible to control the fine bite width of the inner jaw. In the prior art, since the fine adjustment width of less than 1 pitch of the rack was difficult to adjust, a simple clamp type (tweezer type) tightening mechanism was additionally installed to compensate for this, or a fine pitch type rack that extremely reduced the tightening strength of the rack. Tooth type is applied. However, these methods do not ensure sufficient bite strength. In the present invention, most of the bite adjustment width is assumed by the rack-rack lamp and the fine adjustment width of less than one pitch of the rack is taken by the transfer screw. In this process, the seating pad of the inner jaw is formed on both the short and long sides, which is a driving force that can substantially deepen the depth of the jaw (as well as the bite width).

On the other hand, the inner jaw is formed with a concave circular seating table so as to perform a bite without any restraint in the axial direction while the conveying screw of the fixing bush is in contact. The surface where the seating board and the conveying screw come in contact with the seating board is lubricated, for example grease, to reduce rotational friction and ensure that the conveying force is transmitted smoothly. This free contact seating configuration is a key technology element that can change the arrangement form of the inner jaw together with the inner structure of the inner side of the fixed bush and inner rail chuck that can completely separate the inner jaw.

Finally, the present invention forms an insertion hole and a seating groove in the outer jaw so that the extension jaw can be fitted. This, combined with the long side of the inner jaws, makes it possible to bite and tighten very large pipes. In this process, all the moving parts and the fixing part including the extension jaw are precisely configured to exert a bite force only by the elastic force of the rigid body without any pin coupling, and thus the prefabricated wrench according to the present invention has a variety of disassembling structures. Loose or warped, no change in bite strength or bite retention occurs.

The present invention can configure the wrench or vise pliers in various working modes through various assembly disassembly. In other words, the structure does not cause a decrease in tightening strength due to assembly disassembly, that is, while exhibiting sufficient tightening force, unlike other ratchet wrenches, it is possible to fasten or disassemble pipes of extremely wide thickness with one tool. In addition, the overall adjustment of the quick adjustment structure of the rack-rack clamp method, but also the end adjustment is a screw feed method can be fast, strong and secure fastening.

In addition, in the present invention, both the long side and the short side of the inner jaw can be used, and since the fixed fixed jaw can be additionally mounted to the outer jaw, the bite depth of the tool can be greatly deepened. This structure is completely different from the conventional plumbing tools, which keeps the size of the jaw as it is and simply adjusts the opening width of the jaw, which is extremely advantageous in applying to the aforementioned pipes of various thicknesses.

1 is an external perspective view of a first embodiment of the present invention.
Figure 2 is an external perspective view of a second embodiment of the present invention.
Figures 3a-3c is a modified assembly of the third embodiment and each embodiment of the present invention.
Figure 4b is an exploded perspective view of the present invention.
Figures 5a-5d is a cross-sectional view of the principal part of the present invention.
6a to 6e are working examples showing the jaw bite state of the present invention.

With reference to the embodiment of the present invention included in the drawings in order to technically support the above-described solution of the present invention will be described in detail.

However, in the following specific embodiments, the components including the specific terminology and combinations thereof do not limit the technical spirit inherent in the present invention.

1 is an external perspective view of a first embodiment of the present invention, Figure 4 is an exploded view.

Referring to the drawings, the wrench 100 structure of the first embodiment includes an outer jaw 10 having an outer rail 15 formed on a lower surface thereof and at least one rack 11 formed on a side thereof; An inner jaw 20 formed with an inner rail 23 and slidably in contact with the outer rail 15; And at least one rack clamp 31 and a conveying screw 33 for conveying the inner jaw 20 and conveying a combination of the outer jaw 10 and the inner jaw 20 therein in a bite direction. It is configured to include a; movable bushing 30 to receive the movement, wherein the fixing bush 30 is configured to be completely separated from the outer jaw 10 or the inner jaw (20).

Specifically, the rack clamp corresponding to the rack pinion of the fixing bush 30 is not a simple ratchet pinion but a left and right toggle switch, and the pinion can be completely squeezed out of the rack track as needed. Therefore, the outer jaw 10 is not formed at any end of the jaw or stepped jaw 10 can be completely separated from the fixing bush 30, regardless of the forming section of the rack (11). Of course, the inner jaw 20 without a separate locking shape can be freely separated from the fixing bush, of course.

The inner jaw 20 is formed in an L-shape consisting of a long side on which an inner long side 21 is formed and a short side on which an inner short 22 is formed, and an inner rail 23 is further formed on a surface on which the chuck is formed. In the normal working mode (first embodiment), the inner rail 23 of the surface on which the inner long 21 is formed is engaged with the outer rail 15 of the outer jaw.

Referring to the exploded perspective view, it can be seen that the conveying screw seating 24 is formed on the opposite side of the surface on which the inner rail 23 of the inner jaw 20 is formed. This is a part that receives the rotational conveying movement of the conveying screw 33 is formed in a circular shape so that the lubricant can be injected is slightly recessed.

2 is an external perspective view of a second embodiment of the present invention, and FIGS. 3A to 3B are external perspective views of a third embodiment of the present invention. The overall structure is the same as the first embodiment, but the direction of the inner jaw is changed, or the outer jaw 40 and the extension handle 50 is different.

The outer jaw 10 is formed with an outer chuck 14, an extension jaw insertion hole 12 is formed in the surface formed with the outer chuck 14, the outer chuck 14 is extended to the surface is not formed A jaw seating groove 13 is formed, and can be used by inserting the outer extension jaw 40 as necessary. The outer extension jaw (40) is supported by the back of the direct contact with the outer chuck 14, and the outer extension jaw fixture is bent in a L-shaped extension jaw seating groove formed around the outside of the bent portion of the outer jaw (40) It can be stably supported by (13). In this process, no pin coupling is involved, so the pipe can be bitten by the bending strength of the pure rigid body, and despite the disassembly and prefabricated structure, it can exhibit strong biting force (long lasting holding force when used as a vice pliers).

Figure 3c is a modified assembly of the first, second, third embodiments of the present invention that can perform a variety of tasks.

5a to 5b is a cross-sectional view that can be understood in detail the coupling structure of the extension jaw fitted to the outer jaw of the present invention, Figure 6a to 6b is a working example showing the jaw movement state of the present invention. The inner jaw can be strongly pushed within the movement range of the transfer screw 33 mounted on the fixed bush 30 while adjusting the most bite width with the rack 11 formed in the outer jaw in a very wide width. Therefore, it is possible to strongly bite and turn a pipe of extremely wide thickness. In the present embodiment, the bite width of the wrench implemented in the drawing has a bite width and bite depth equivalent to that of alternately using wrenches of at least 2 to 4 grade ranges having different sizes of chucks.

While the embodiments of the present invention have been described in detail with reference to the drawings, the technical spirit of the present invention is not limited to the above embodiments.

In other words, those of ordinary skill in the art to which the present invention pertains can utilize the technical spirit contained in the specification and drawings of the present invention, and, if necessary, simply change and simplify the description and drawings of the present invention. Although extended examples may be implemented, these are also clearly included in the scope of the present invention as expressed by the following claims.

The present invention can insert a tool such as a drill by drilling a hole in the feed screw seat of the inner jaw, and by slightly modifying the feed screw handle, additional work (drilling, etc.) can be performed while the pipe is tightened with a wrench. It can be used as a working tool of.

10: outer jaw
11: rack
12: tool hole insertion hole
13: Extension Joo Seating Home
14: outer chuck
15: outer rail
16: extension handle fitting
20: inner jaw
21: long chuck
22: short chuck
23: inner rail
24: feed screw seat
30: fixed bush
31: rack clamp
32: pushing screw bush
33: feed screw
34: feed screw handle
40: outer extended jaw
41: lateral extension chuck
42: outer extension jaw fixture
50: extension handle
100: wrench

Claims (4)

delete delete delete An outer rail 15 formed on a lower surface thereof, and an outer jaw 10 having at least one rack 11 formed on a side surface thereof;
An inner jaw 20 formed with an inner rail 23 and slidably in contact with the outer rail 15; And
At least one rack clamp 31 and a conveying screw 33 for conveying the inner jaw 20 are mounted therein, and the inner jaw 10 and the inner jaw 20 are coupled to each other in a bite direction. It includes; fixing bushing 30 to be received,
The fixing bush 30 is configured to be completely separated from the outer jaw 10 or the inner jaw 20,
The inner jaw 20 is formed in an L-shape consisting of a long side formed with an inner long length 21, and a short side formed with an inner short length 22, and an inner rail 23 is further formed on a surface on which the chuck is formed. ,
On the opposite side of the surface formed with the inner rail 23 of the inner jaw 20, a feed screw seat 24 is further formed to allow the lubricant to receive the rotary feed movement of the feed screw 33 ,
The outer jaw 10 is formed with an outer chuck 14, an extension jaw insertion hole 12 is formed in the surface formed with the outer chuck 14, the outer chuck 14 is extended to the surface is not formed The jaw seating groove 13 is formed, the wrench 100, characterized in that the outer extension jaw (40) can be fitted.

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