A new type of nozzle pliers

Abstract

The present invention relates to the field of hardware tools, and in particular to a novel nozzle pliers, wherein a pliers head is provided with a pliers blade, a pliers body includes a pliers handle, a hinged portion, and an L-shaped connecting portion, wherein the pliers handle, hinged portion, and L-shaped connecting portion are integrally formed; a pin passes through two hinged portions, and the two pliers bodies are movably connected via the pin of the hinged portion; a dovetail groove is provided on the vertical surface of the L-shaped connecting portion, and a dovetail protrusion matching the dovetail groove is provided on the side surface of the tail of the pliers head, and the L-shaped connecting portion and the pliers head are connected by the dovetail groove and the dovetail protrusion; a missing section protrusion is provided at the tail of the pliers head, and a notch is provided on the outer side of the missing section protrusion, and a pliers head stopper is inserted in the notch, that is, the pliers head stopper is arranged on the outer side of the missing section protrusion, and the outer bottom of the pliers head stopper is welded to the L-shaped connecting portion; a groove is provided on the horizontal surface of the L-shaped connecting portion, and the missing section protrusion and the pliers head stopper are both placed in the groove. The present invention has the advantages of being easy to replace, cost-effective, easy to use, and strong and durable.

Description

Technical field:

[0001] The invention relates to the field of hardware tools, in particular to a novel nozzle pliers. Background technology:

[0002] Traditional nozzle pliers have a one-piece head and body, meaning they have to be thrown away if the blades break. While nozzle pliers with replaceable heads are now available, they often use rivets or screws to secure the heads to the body, requiring two screws. Cutting through hard objects stretches the rivets, creating a gap between the left and right tips. Furthermore, the pliers are made of high-strength steel (such as high-strength steel) and are prone to breaking through the rivet holes. Screws are even worse and can become loose. There are also rivet-and-weld options, but welding can easily cause the heads to anneal and scorch (affecting their appearance and causing them to become blunt). Furthermore, the high-strength head and the body are made of two different materials, making them difficult to weld securely and replace. Summary of the invention:

[0003] The purpose of the present invention is to overcome the above disadvantages and provide a new nozzle pliers.

[0004] The purpose of the present invention is achieved through the following technical solutions:

[0005] A novel nozzle pliers comprises two identical pliers bodies and two identical pliers heads, wherein the pliers heads are provided with pliers blades, and the pliers bodies comprise a pliers handle, a hinged portion, and an L-shaped connecting portion, wherein the pliers handle, the hinged portion, and the L-shaped connecting portion are integrally formed;

[0006] The pin passes through the two hinged parts, and the two clamp bodies are movably connected through the pins of the hinged parts;

[0007] A dovetail groove is provided on the vertical surface of the L-shaped connecting part, and a dovetail convex matching the dovetail groove is provided on the side of the tail of the clamp head. The L-shaped connecting part and the clamp head are connected by the dovetail groove and the dovetail convex.

[0008] The tail of the pliers head is provided with a missing section protrusion, the outside of which is provided with a notch, and the pliers head stopper is plugged into the notch, that is, the pliers head stopper is arranged on the outside of the missing section protrusion, and the outside bottom of the pliers head stopper is welded to the L-shaped connecting part;

[0009] A groove is provided on the horizontal surface of the L-shaped connecting portion, and the missing segment protrusion and the clamp head stopper are both placed in the groove.

[0010] Preferably, an adjusting screw is provided on the clamp head stopper.

[0011] Preferably, the outer bottom of the clamp head stopper is welded to the L-shaped connecting portion. Therefore, the clamp head is usually made of high-speed steel, which is brittle and easy to break after welding, and cannot be directly welded to the L-shaped connecting portion. The clamp head stopper is made of the same material as the L-shaped connecting portion. Therefore, by welding the clamp head stopper to the L-shaped connecting portion, a fixed connection is formed, which not only fixes the clamp head, but also makes it easier to remove the clamp head when replacing it.

[0012] The dovetail groove has a stopper groove at the bottom, and the dovetail protrusion has a second missing protrusion that matches the stopper groove. When the second missing protrusion is located in the stopper groove, the portion of the stopper groove not filled by the second missing protrusion becomes a second gap, and a second plier stopper is located in the second gap. As a result, there is inevitably a certain gap between the dovetail groove and the dovetail protrusion, and when cutting hard plastic, the pliers will bounce back and forth in the dovetail groove. By providing the second plier stopper embedded and installed between the dovetail protrusion and the dovetail groove, the second plier stopper and the second gap are tightly fitted, making the dovetail groove and the dovetail protrusion more stable and preventing the pliers from shaking.

[0013] Preferably, the second clamp head stopper is located on the side of the second missing segment protrusion opposite to the clamp blade. Therefore, when the nozzle pliers are in use, the clamp head is subjected to an outward force, and the second clamp head stopper can better limit the clamp head, making the clamp head installation more stable.

[0014] The outer bottom of the second clamp head stopper is firmly welded to the L-shaped connecting portion. Thus, the second clamp head stopper and the L-shaped connecting portion are fixed, which not only plays a fixing role but also facilitates the removal of the clamp head when the clamp head is replaced.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] The pliers head of the present invention is easy to replace. After the pliers head is damaged or misaligned after long-term use, the pliers head can be directly replaced without replacing the entire nozzle pliers, thereby reducing costs.

[0017] The pliers head of the present invention is connected to the L-shaped connecting part through a dovetail groove and a dovetail protrusion. The pliers head has no screws or rivet eyes, which increases the firmness of the pliers head and makes it less likely to break. The fastening of the pliers head and the L-shaped connecting part is also strengthened, thus preventing the pliers head from loosening after long-term use.

[0018] The present invention allows for repeated sharpening of the pliers after they become blunt or chipped. When the sharpness is reduced, the adjusting screw on the pliers head stopper can be adjusted to move the pliers head inward until the two pliers blades are fully closed, greatly extending the service life of the nozzle pliers and saving replacement costs. The pliers head stopper ensures that the pliers head cannot move outward during cutting. Description of the drawings:

[0019] Figure 1 It is a front view of the present invention;

[0020] Figure 2 It is a front view of the upper half of the present invention;

[0021] Figure 3 yes Figure 2 Schematic diagram of the AA structure;

[0022] Figure 4 It is the front view of the pliers head;

[0023] Figure 5 It is a front view of the pliers head with the adjustment screw;

[0024] Reference numerals in the figure: pliers body -1, pliers handle -2, hinged part -3, L-shaped connecting part -4, pliers head 5, dovetail protrusion -6, dovetail groove -7, missing section protrusion -8, pliers head stop -9, pin -10, adjusting screw -11, pliers blade -12, groove -13, stopper groove -14, second missing section protrusion -15, second pliers head stop -16. Specific implementation method:

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The elements and features described in one embodiment of the present invention may be combined with the elements and features shown in one or more other embodiments. It should be noted that for the purpose of clarity, the representation and description of components and processes that are not related to the present invention and are known to those of ordinary skill in the art are omitted in the description. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present invention.

[0026] The present invention is further described below with reference to the accompanying drawings: A novel nozzle pliers comprises two identical pliers bodies 1 and two identical pliers heads 5, the pliers heads being provided with pliers blades 12, the pliers body 1 comprising a pliers handle 2, a hinged portion 3, and an L-shaped connecting portion 4, the pliers handle 2, the hinged portion 3, and the L-shaped connecting portion 4 being integrally formed;

[0027] The pin 10 passes through the two hinge parts 3, and the two pliers bodies 1 are movably connected through the pin 10 of the hinge parts 3;

[0028] A dovetail groove 7 is provided on the vertical surface of the L-shaped connecting portion 4, and a dovetail protrusion 6 matching the dovetail groove 7 is provided on the side of the tail of the clamp head 5. The L-shaped connecting portion 4 and the clamp head 5 are connected by the dovetail groove 7 and the dovetail protrusion 6. The clamp head is fixed without rivets, so that the clamp head is not easy to break;

[0029] The tail of the pliers head 5 is provided with a missing section protrusion 8, the outer side of the missing section protrusion 8 is provided with a notch, and the notch is plugged with a pliers head stopper 9, that is, the pliers head stopper 9 is arranged on the outer side of the missing section protrusion 8, and the outer bottom of the pliers head stopper 9 is welded to the L-shaped connecting part 4. The missing section protrusion 8 cooperates with the pliers head stopper 9 so that the pliers head can only be moved inward but not outward, thereby making it more convenient to replace the pliers head;

[0030] A groove 13 is provided on the horizontal surface of the L-shaped connecting portion 4, and the missing segment protrusion 8 and the clamp head stopper 9 are both placed in the groove 13;

[0031] You can also drill a hole in the middle of the pliers head block and tap the thread to install the screw. When the pliers blade is ground smaller, use a hammer to knock it in to the appropriate position and then tighten the screw.

[0032] A stopper groove 14 is formed at the bottom of the dovetail groove 7, and a second missing protrusion 15 is integrally formed with the dovetail protrusion 6 to cooperate with the stopper groove 14. When the second missing protrusion 15 is embedded in the stopper groove 14, the portion of the stopper groove 14 not filled by the second missing protrusion 15 forms a second gap, and a second pliers stopper 16 is provided in the second gap. As a result, there is inevitably a certain gap between the dovetail groove and the dovetail protrusion, and when cutting hard plastic, the pliers will bounce back and forth in the dovetail groove. By providing the second pliers stopper embedded and installed between the dovetail protrusion and the dovetail groove, the second pliers stopper and the second gap are tightly fitted, making the dovetail groove and the dovetail protrusion more stable and preventing the pliers from shaking.

[0033] Among them, the second clamp head stopper 16 is located on the side of the second missing segment protrusion 15 away from the clamp blade 12. Therefore, when the nozzle pliers are in use, the clamp head is subjected to an outward force, and the second clamp head stopper can better limit the clamp head, making the clamp head installation more stable.

[0034] The outer bottom of the second clamp stopper 16 is welded to the L-shaped connecting portion 4. Therefore, the clamp head is usually made of high-speed steel, which is brittle and easy to break after welding, and cannot be directly welded to the L-shaped connecting portion. The second clamp stopper is made of the same material as the L-shaped connecting portion. Therefore, by welding the second clamp stopper to the L-shaped connecting portion, a fixation is formed, which not only fixes the clamp head, but also makes it easier to remove the clamp head when replacing it. During installation, align the dovetail protrusion 6 on the pliers head 5 with the dovetail groove on the L-shaped mounting portion 4, and after adjusting them to the appropriate position, insert the pliers head stopper 9 into the gap and the second pliers head stopper 16 into the stopper groove 14, leaving a section exposed. Use a hammer to hit the excess section so that the pliers head stopper 9 is firmly swollen in the gap and the second pliers head stopper 16 is firmly swollen in the stopper groove 14. Then, after grinding the outer side of the nozzle pliers as a whole, drill a small hole at the connection between the L-shaped connecting portion 4 and the pliers head stopper 9, weld the small hole with cold welding, and then grind it flat. In this way, only one weld point will fix the pliers head stopper 9 and the pliers body, and the weld point will not be visible. In this way, the installation is completed. When replacing the pliers head 5, use a hammer to knock the pliers head 5 inward so that the pliers head 5 can be taken out from the inside. The pliers head stopper 9, without the support of the pliers head 5, can be gently knocked off with a screwdriver. Repeat the above installation steps when installing the new pliers head.

[0035] When the pliers blades 12 on the pliers head 5 are worn, they can be trimmed. When the blades are worn small, use a hammer to knock the pliers head 5 inward to move the pliers head 5 inward until the two pliers blades 12 are completely closed. Then adjust the adjusting screw 11 on the pliers head stopper 9 to make it bear against the missing segment bulge 8 at the tail end of the pliers head 5. If you want to replace the pliers head 5, you still need to knock off the pliers head 5 and the pliers head stopper 9 together.

[0036] The main technical point of the present invention is that the rear side of the pliers head is cut into at least one bulge by wire cutting, and then a section of the outer side of the bulge is cut off to form a missing bulge 8; the surface of the dovetail bulge 6 is cut into at least one bulge by wire cutting, and then a section of the outer side of the bulge is cut off to form a second missing bulge 15, and a stopper groove 14 is provided in the dovetail groove for inserting the second missing bulge 15, and then the dovetail bulge 6 of the pliers head is placed in the dovetail groove 7 of the L-shaped connecting part 4 at the front end of the pliers body, and at the same time, the second missing bulge 15 is inserted into the stopper groove 14, and then the second pliers head stopper 16 is clamped in the stopper groove 14, and the second pliers head stopper 16 is connected to the second missing bulge 15 as one. In addition, the pliers head stopper 9 is clamped in the notch outside the missing bulge 8 and connected to the missing bulge 8 as one. The pliers head stopper 9 and the second pliers head stopper 16 should be made of the same material as the pliers body. (It can be welded to the clamp body) and it should be longer than the cut section. After adjusting it to the appropriate position, use a hammer to hit the extra section so that the clamp head stopper 9 is firmly swollen in the notch, and the second clamp head stopper 16 is firmly swollen in the stopper groove 14. There will be a gap between the dovetail groove 7 and the dovetail protrusion 6. In this way, even if there is a large gap, the clamp head 5 will not swing. After grinding the outer side of the clamp head as a whole, drill a small hole between the clamp body and the clamp head stopper and the second clamp head stopper respectively, and then use cold welding to fill the small hole and then grind it flat. In this way, only one welding point will firmly fix the clamp head stopper and the second clamp head stopper, and the welding point cannot be seen. It is beautiful, practical and can completely solve the above shortcomings, so that the clamp head only moves inward and not outward. The swollen clamp head stopper 9 and the second clamp head stopper 16 ensure that the clamp head will not swing, and disassembly can be done by knocking inward.

[0037] Finally, it should be noted that although the present invention and its advantages have been described in detail above, it should be understood that various changes, substitutions, and modifications may be made without departing from the spirit and scope of the present invention as defined by the appended claims. Moreover, the scope of the present invention is not limited to the specific embodiments of the processes, devices, means, methods, and steps described in the specification. A person of ordinary skill in the art will readily understand from the disclosure of the present invention that existing and future developed processes, devices, means, methods, or steps that perform substantially the same functions or achieve substantially the same results as the corresponding embodiments described herein may be used in accordance with the present invention. Therefore, the appended claims are intended to include within their scope such processes, devices, means, methods, or steps.

Claims

1. A novel nozzle pliers, comprising two identical pliers bodies (1) and two identical pliers heads (5), wherein the pliers heads (5) are provided with pliers blades (12), characterized in that: The pliers body (1) comprises a pliers handle (2), a hinged portion (3), and an L-shaped connecting portion (4); the pliers handle (2), the hinged portion (3), and the L-shaped connecting portion (4) are integrally formed; A pin shaft (10) passes through the two hinged parts (3), and the two pliers bodies (1) are movably connected via the pin shaft (10) of the hinged parts (3); A dovetail groove (7) is provided on the vertical surface of the L-shaped connecting portion (4), and a dovetail protrusion (6) matching the dovetail groove (7) is provided on the side surface of the tail of the clamp head (5), and the L-shaped connecting portion (4) and the clamp head (5) are connected by the dovetail groove (7) and the dovetail protrusion (6); The tail of the pliers head (5) is provided with a missing section protrusion (8), the outside of the missing section protrusion (8) is provided with a notch, and the pliers head stopper (9) is plugged into the notch, that is, the pliers head stopper (9) is arranged on the outside of the missing section protrusion (8); A groove (13) is provided on the horizontal surface of the L-shaped connecting portion (4), and the missing segment protrusion (8) and the clamp head stopper (9) are both placed in the groove (13); The clamp head stopper (9) is provided with an adjusting screw (11); The outer bottom of the clamp head stopper (9) is firmly welded to the L-shaped connecting portion (4).

2. A new nozzle pliers according to claim 1, characterized in that: A stopper groove (14) is provided at the bottom of the dovetail groove (7), and the dovetail protrusion (6) is provided with a second missing segment protrusion (15) that cooperates with the stopper groove (14). When the second missing segment protrusion (15) is arranged in the stopper groove (14), the portion of the stopper groove (14) that is not filled by the second missing segment protrusion (15) is a second gap, and a second clamp head stopper (16) is provided in the second gap.

3. A new nozzle pliers according to claim 2, characterized in that: The second clamp head stopper (16) is located on the side of the second missing segment protrusion (15) that is opposite to the clamp blade (12).

4. A new nozzle pliers according to claim 2, characterized in that: The outer bottom of the second clamp stopper (16) is firmly welded to the L-shaped connecting portion (4).

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