CN117293617B

CN117293617B - Net twine pincers

Info

Publication number: CN117293617B
Application number: CN202311559276.9A
Authority: CN
Inventors: 张凤仪; 张芳; 曾妍; 谢珊
Original assignee: Chengdu Vocational and Technical College of Industry
Current assignee: Chengdu Vocational and Technical College of Industry
Priority date: 2023-11-22
Filing date: 2023-11-22
Publication date: 2024-02-02
Anticipated expiration: 2043-11-22
Also published as: CN117293617A

Abstract

The invention discloses a wire clamp, which belongs to the field of electric tools and comprises a clamp head, a clamp handle and a pulley assembly, wherein the clamp head comprises a fixed base and a sliding base, and the sliding base is in sliding fit with the fixed base; the forceps handle comprises a pair of base handles and a pair of handles; the outer side of the front end of the base handle is in running fit with the fixed base, and the inner side of the front end of the base handle is coupled with the sliding base; the rear end of the base handle is rotationally connected with the handle, and the handle comprises a holding part and a traction rod; the pulley assembly comprises a fixed pulley block, a movable pulley block and a traction rope, wherein the fixed pulley block is fixedly arranged in a fixed base, the movable pulley block is arranged on a sliding base, a first end of the traction rope is fixed, a second end of the traction rope winds around the fixed pulley block and the movable pulley block for many times, and the pulley assembly is connected to the outer end part of the traction rod. In the net wire pliers, the pulley component is arranged to convert the force part for compressing the crystal head into the pulling force of the pulley block, so that the pulling force required by the compression force of the crystal head is smaller, and the labor-saving effect is achieved.

Description

Net twine pincers

Technical Field

The invention belongs to the field of electric tools, and relates to a pair of pliers for manufacturing a net wire connector.

Background

The wire pliers are a special tool for cutting and connecting wires. It is commonly used in network installation, maintenance and cabling work. The design of the net twine pincers makes the wire cutting and the wire pressing more convenient and accurate. It is generally composed of a cutting blade, a jaw and a crimping module. The wire pliers can be used for easily cutting off the outer skin of the wire, and simultaneously stripping the insulating layer, and correctly inserting the wire into the RJ45 socket, so that the quality and stability of network connection are ensured. Wire pliers are a very useful tool, both for home networks and for enterprise networks.

When installing the net wire, it is necessary to peel off the outer skin of the net wire, arrange the wire sequence, trim the wire length, and insert the wire correctly into the slot of the crystal head. And then, the wire pliers are used for compacting the metal contacts of the crystal head, so that the wires are ensured to be in good contact with the contacts, and the transmission quality of signals is ensured. Properly installed network cable heads can provide reliable network connections and can support high-speed data transmission.

The crimping of the wire crystalline ends requires a certain amount of strength and skill. This is mainly because the wire clamp needs to ensure a sufficient contact area between the wire and the contact to ensure a stable electrical connection when pressing against the metal contact. Meanwhile, the design of the crystal head also determines that the crystal head needs a certain force to be tightly pressed.

In the process of implementing the present invention, the inventor finds that at least one of the following technical problems exists in the prior art:

1) Most of the existing net twine pliers are not provided with a labor-saving mechanism, and for users with smaller holding power, the net twine joints are very laborious to manufacture; particularly, when the net wire joints are manufactured in batches, the labor burden of a user is high, the hand holding the net wire is easy to fatigue, and the manufacturing efficiency of the net wire joints is particularly affected. Taking the first invention of the inventor team as an example, 3-4 net wire joints can be continuously manufactured by using the existing net wire pliers, and hands are not forced when the 5 th net wire joint is manufactured.

2) In the prior art, although the net wire pliers with the ratchet mechanism can achieve a certain labor-saving effect, the ratchet mechanism and the handle form a closed triangle structure, so that the net wire is inconvenient to cut from the middle part of the long net wire.

3) In addition, the press holes of the wire pliers are usually divided into a front side and a back side, if the press holes are used reversely, the wire forming sequence is reverse, and the wire connector is disabled.

Disclosure of Invention

In view of the above, the invention aims to provide a convenient and labor-saving net twine clamp.

The inventor continuously reforms and innovates through long-term exploration and trial and repeated experiments and efforts, and in order to solve the technical problems, the invention provides a net wire clamp which comprises a clamp head, a clamp handle and a pulley assembly, wherein the clamp head comprises a fixed base and a sliding base, and the sliding base is in sliding fit with the fixed base; the forceps handle comprises a pair of base handles and a pair of handles; the outer side of the front end of the base handle is in running fit with the fixed base, and the inner side of the front end of the base handle is coupled with the sliding base; the rear end of the base handle is rotationally connected with the handle, and the handle comprises a holding part and a traction rod; the pulley assembly comprises a fixed pulley block, a movable pulley block and a traction rope, wherein the fixed pulley block is fixedly arranged in a fixed base, the movable pulley block is arranged on a sliding base, a first end of the traction rope is fixed, a second end of the traction rope winds around the fixed pulley block and the movable pulley block for many times, and the pulley assembly is connected to the outer end part of the traction rod.

According to one embodiment of the wire plier, a containing cavity is formed in the fixed base, and the fixed pulley block and the movable pulley block are located in the containing cavity.

According to one embodiment of the wire plier, the steering wheel is arranged on the base handle, and the traction rope is connected with the outer end part of the traction rod after bypassing the steering wheel.

According to one embodiment of the wire clamp according to the invention, the length of the traction rod is shorter than the length of the grip.

According to one embodiment of the wire plier, the second end of the traction rope is connected with a connecting block, the outer end part of the traction rod is provided with a connecting hole, and the connecting block is embedded in the connecting hole.

According to one embodiment of the wire plier, the rear end of the base handle is rotationally connected with the handle through the second rotating shaft, and the distance from the connecting hole to the second rotating shaft is 90% -110% of the distance from the steering wheel to the second rotating shaft.

According to one embodiment of the wire plier of the invention, the inner side of the front end of the base handle is coupled with the sliding base through an inclined slot hole and is coupled with a push rod, and the diameter of the push rod is equal to the width of the inclined slot hole.

According to one embodiment of the wire plier, the fixed base is provided with at least N crimping holes with different configurations and N slide ways, the sliding base is provided with N pressing blocks matched with the crimping holes and crimping connectors, and N is a natural number not less than 1; the fixing base is also provided with a front panel and a rear panel, the front panel is provided with a through hole corresponding to the crimping hole, and the rear panel seals the crimping hole.

According to one embodiment of the wire plier, a shearing part is further arranged on the base handle; the grip part is sleeved with a handle sleeve.

According to one embodiment of the wire plier, a torsion spring for bouncing the plier handle is further arranged at the front end of the base handle.

Compared with the prior art, one of the technical schemes has the following advantages:

a) In the net wire pliers, the pulley component is arranged to convert the force part for compressing the crystal head into the pulling force of the pulley block. In the pulley block mechanism, the traction displacement distance of the outer end part of the traction rod is large, and the input force is small; the displacement distance of the sliding base is small, the output force is large, namely, the traction force required by the pressing force of the crystal head is smaller, and the labor-saving effect is achieved.

b) In one embodiment of the wire pliers, the length of the traction rod is smaller than that of the holding part, and according to the lever principle, the holding force of a human hand is further amplified through the lever action of the pliers handle. Conversely, the holding force required for realizing the pressing force of the crystal head is further reduced.

c) In one embodiment of the wire clamp, the structure of pushing the sliding base by the traditional lever principle is maintained, and the sliding base is pushed by various force transmission modes.

d) In one embodiment of the wire plier, the distance from the connecting hole to the second rotating shaft is equal to or similar to the distance from the steering wheel to the second rotating shaft, so that the effective efficiency of traction displacement distance is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic front view of a preferred embodiment of the wire clamp of the present invention.

Fig. 2 is a schematic rear view of the structure of fig. 1.

Fig. 3 is a schematic perspective view of fig. 1.

FIG. 4 is a schematic cross-sectional view of A-A in FIG. 1.

Fig. 5 is a schematic perspective view of the structure of fig. 1.

Fig. 6 is a partially disassembled structure of a preferred embodiment of the wire clamp of the present invention.

The marks in the figure are respectively:

100 a fixed base is provided,

110 the crimp holes,

a 120 slideway, which is provided with a plurality of sliding grooves,

130 the receiving cavity is configured to receive a fluid,

140 a front panel of the display device,

141 of the through holes of the glass substrate,

142 a front slide-in hole of the slide-in plate,

a rear panel 150 is provided which,

151 of the rear slide hole,

200 a slide-on base of the device,

210 the push rod,

300 the pressing block is pressed into a block,

a 400-base handle is arranged on the base,

a first axis of rotation 410 is provided,

420 a slot hole with an inclined plane,

430 a torsion spring,

440 the shear section(s),

a 500-handle is provided with a handle,

510 a second axis of rotation, the second axis of rotation,

the traction rod is pulled by 520,

a grip portion 530 of the handle portion,

531 is provided with a handle sleeve,

610 the fixed pulley block,

611 a fixed shaft,

620 a movable pulley block,

621 the sliding shaft is provided with a sliding groove,

630 the steering wheel is turned to a position,

631 to the steering axis of the vehicle,

640 a pull-in cord,

641 connection blocks.

Detailed Description

The following description is of one embodiment with reference to the accompanying drawings.

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus, once an item is defined in one figure, it may not be further defined and explained in the following figures.

See fig. 1-6. The embodiment describes a net twine clamp, which comprises a clamp head, a clamp handle and a pulley assembly. The clamp head is a structural component for crimping the net wire and the crystal head, the clamp handle is an operating component for operating the clamp head to crimp the net wire and the crystal head, and the pulley assembly is a labor-saving transmission assembly.

The clamp head comprises a fixed base 100 and a sliding base 200, wherein the sliding base 200 is installed in the fixed base 100, and the sliding base 200 is in sliding fit with the fixed base 100.

The fixed base 100 is provided with at least N crimping holes 110 and N slides 120 with different configurations, n=1, 2 or 3. The hole patterns of crimp holes 110 are not limited in any way by this application, and any known hole patterns in the art may be used in the present wire plier. Crimping different types of crystal heads, such as RJ-45 crystal heads, RJ-11 crystal heads, BNC crystal heads, necessitates the use of different hole patterns. Based on the wire clamp of the invention, one crimping hole 110, two crimping holes 110 or three crimping holes can be selected. The present figures illustrate the situation for 3 different configurations of crimp holes 110.

Accordingly, the slide base 200 is provided with a pressing block 300 for press-fitting the press-fitting hole 110. The press block 300 is slidably engaged with the slide 120. When the crystal head of the net wire needs to be crimped, the top end of the pressing block 300 extends into the crimping hole 110 from the slideway 120, as shown in fig. 5; after the crimping is completed, the top end of the pressing block 300 is returned to the slideway 120.

In a preferred embodiment, the fixing base 100 is further mounted with a front panel 140 and a rear panel 150, the front panel 140 is provided with a through hole 141 corresponding to the crimp hole 110, and the rear panel 150 seals the crimp hole 110. When the crystal head of the net wire is in crimping, the crystal head can only enter the crimping hole 110 from the through hole 141, so that the uniqueness of the entering channel of the crystal head is ensured, and the condition that the net wire joint is disabled due to incorrect direction is avoided.

Referring to fig. 1-6, the clamp handle includes a pair of symmetrically disposed base handles 400 and a pair of symmetrically disposed handles 500. As shown in fig. 5, the outer side of the front end of the base handle 400 is rotatably coupled with the fixed base 100 through a first rotation shaft 410, and a torsion spring 430 is installed on the first rotation shaft 410. The two handles 500 are held by hand, and the torsion spring 430 is in a compressed state; after the hand is released, the torsion spring 430 releases the elastic force, and the base handle 400 and the handle 500 are separated.

The inner side of the front end of the base handle 400 is coupled with the sliding base 200, specifically, the inner side of the front end of the base handle 400 is coupled with the sliding base 200 through the inclined slot 420 and the push rod 210, and the diameter of the push rod 210 is equal to the width of the inclined slot 420. The number of the inclined slot holes 420 and the push rods 210 is two, and the inclined slot holes and the push rods 210 are symmetrically arranged. The inclined slot 420 and the push rod 210 are disposed between the two first shafts 410. In the present embodiment, the chute hole 420 is provided on the base handle 400, and the push rod 210 is provided on the slide base 200; equivalently, the chute hole 420 may be provided on the slide base 200, and the push rod 210 is provided on the base handle 400. In this embodiment, the chute 420 is a component for driving the push rod 210 to move up and down, and because the chute 420 rotates around the first rotation shaft 410, the track is arc-shaped, and the push rod 210 can only slide up and down, the length of the chute 420 in the inclined direction is determined according to the rotation radius and the sliding displacement distance of the push rod 210. The push rod 210 is fixedly disposed on the sliding base 200, and the push rod 210 slides up and down to slide the sliding base 200 up and down.

The rear end of the base handle 400 is rotatably coupled to the handle 500 via a second rotation shaft 510. The present invention provides a segmented arrangement of conventional clamp handles, the core of which is to provide a structural basis for connecting the pull rope 640. Preferably, the rotation angle of the handle 500 is defined structurally according to practical requirements, that is, the rotation angle threshold of the handle 500 is given, for example, the rotation angle of the handle 500 is defined as 20 °, that is, the handle 500 forms an angle of 160 ° to 180 ° with respect to the base handle 400, and further, as a scheme for realizing the rotation threshold definition, two limit stops are respectively provided on the base handle 400 as a minimum angle limit stop and a maximum angle limit stop.

The handle 500 includes a grip 530 and a traction rod 520, and the boundary between the grip 530 and the traction rod 520 is divided by a rotational connection portion. The traction rod 520 and the holding part 530 have a fixed included angle, and one end of the traction rod 520 is fixedly connected with the holding part 530, preferably, the traction rod 520 and the holding part 530 are integrally formed. The other end of the drawbar 520 (i.e., the outer end of the drawbar 520) is connected to the drawbar 640, and the outer end of the drawbar 520 is provided with a connection hole for connecting the connection block 641 of the drawbar 640. The holding part 530 and the traction rod 520 form a bending rod structure, and the traction rod 520 can be a straight rod or an arc rod. The length of the traction rod 520 is shorter than that of the holding part 530, and the axial distance a between the connecting hole on the traction rod 520 and the second rotating shaft 510 is equal to or similar to the axial distance B between the steering wheel 630 and the second rotating shaft 510, which is similar in this embodiment, but the difference between the two axial distances a and B is not more than 10%. When the axial distance a is equal to the axial distance B, the traction lever 520 rotates to maximize the effective traction rate of the traction rope 640.

In an alternative embodiment, the base handle 400 is further provided with a cutout 440.

In an alternative embodiment, the grip 530 is provided with a sleeve 531.

Referring to fig. 5, two accommodating chambers 130 are provided in the fixed base 100, symmetrically provided at both left and right sides of the wire clamp, and a fixed pulley block 610 and a movable pulley block 620 are installed in the accommodating chambers 130. In this embodiment, the pulley assembly includes a fixed pulley block 610, a movable pulley block 620, a steering wheel 630 and a traction rope 640, the fixed pulley block 610 is fixedly installed in the fixed base 100, the movable pulley block 620 is installed on the sliding base 200, a first end of the traction rope 640 is fixed, a second end of the traction rope 640 is connected with a connecting block 641, the second end of the traction rope 640 bypasses the fixed pulley block 610 and the movable pulley block 620 for many times, the number of times of rope winding is determined by the number of fixed pulleys in the fixed pulley block 610 and the number of movable pulleys in the movable pulley block 620, the traction rope 640 bypasses the steering wheel 630 again and then is connected to the outer end of the traction rod 520, and the connecting block 641 is embedded in the connecting hole.

In an alternative embodiment, the fixed pulley block 610 is mounted on the fixed shaft 611, and both front and rear ends of the fixed shaft 611 are fixedly mounted on the front and rear panels 140 and 150, respectively.

In an alternative embodiment, the front panel 140 is provided with a front sliding hole 142, the rear panel 150 is provided with a rear sliding hole 151, the front sliding hole 142 and the rear sliding hole 151 are all equal-sized straight slot holes and are arranged face to face, the movable pulley block 620 is mounted on a sliding shaft 621, the sliding shaft 621 is fixedly connected with the sliding base 200, and the front end and the rear end of the sliding shaft 621 are respectively in sliding fit with the front sliding hole 142 and the rear sliding hole 151. The front slide hole 142 and the rear slide hole 151 may be provided as through grooves or blind grooves. When the front slide hole 142 and the rear slide hole 151 are provided as blind grooves, the opening direction is directed toward the slide shaft 621.

The shortest distance line between the axes of the fixed shaft 611 and the sliding shaft 621 is parallel to the sliding direction of the sliding base.

The steering wheel 630 is mounted on a steering shaft 631, and the steering shaft 631 is fixedly mounted on the base handle 400.

The two handles 500 are held by hand, the two handles 500 are close, the distance between the outer end parts of the two traction rods 520 is large, the outer end parts of the traction rods 520 are used for traction of the connecting blocks 641, the part of the traction ropes 640 is pulled out of the accommodating cavity 130, the sliding shaft 621 moves towards the fixed shaft 611 under the action of the traction ropes 640 to drive the sliding base 200 to slide forwards, the push rod 210 extends into the crimping holes 110 from the slideway 120 to crimp the crystal heads of the net wires, and the torsion spring 430 is compressed; after the hand is released, the holding force is released, the torsion spring 430 releases the elastic force, the base handle 400 is separated from the handle 500, the base handle 400 rotates relative to the first rotating shaft 410, the chute hole 420 rotates, and simultaneously the push rod 210, the sliding base 200 and the sliding shaft 621 slide backward, the sliding shaft 621 drives the movable pulley block 620 to move away from the fixed shaft 611, the traction rope portion between the movable pulley block 620 and the fixed pulley block 610 becomes longer, the traction rope portion outside the accommodating cavity 130 is shortened, the distance between the outer end portions of the two traction rods 520 is reduced, and the position is restored.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The foregoing is merely a preferred embodiment of the present invention, and it should be noted that the above-mentioned preferred embodiment should not be construed as limiting the invention, and the scope of the invention should be defined by the appended claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the invention, and such modifications and adaptations are intended to be comprehended within the scope of the invention.

Claims

1. The net wire clamp is characterized by comprising a clamp head, a clamp handle and a pulley assembly, wherein the clamp head comprises a fixed base and a sliding base, and the sliding base is in sliding fit with the fixed base; the forceps handle comprises a pair of base handles and a pair of handles; the outer side of the front end of the base handle is in running fit with the fixed base, and the inner side of the front end of the base handle is coupled with the sliding base; the rear end of the base handle is rotationally connected with the handle, and the handle comprises a holding part and a traction rod; the pulley assembly comprises a fixed pulley block, a movable pulley block, a traction rope and a steering wheel, wherein the fixed pulley block is fixedly arranged in a fixed base, the movable pulley block is arranged on a sliding base, a first end of the traction rope is fixed, a second end of the traction rope bypasses the fixed pulley block and the movable pulley block for a plurality of times, and is connected to the outer end part of a traction rod after bypassing the steering wheel; the second end of the traction rope is connected with a connecting block, the outer end part of the traction rod is provided with a connecting hole, and the connecting block is embedded in the connecting hole; the rear end of the base handle is rotationally connected with the handle through a second rotating shaft, and the distance from the connecting hole to the second rotating shaft is 90% -110% of the distance from the steering wheel to the second rotating shaft; the inner side of the front end of the base handle is coupled with the sliding base through an inclined slot hole and is coupled with a push rod, and the diameter of the push rod is equal to the width of the inclined slot hole; the front end of the base handle is also provided with a torsion spring which can lead the clamp handle to spring open.

2. The wire plier according to claim 1, wherein a receiving cavity is provided in the fixed base, and the fixed pulley block and the movable pulley block are located in the receiving cavity.

3. The wire clamp of claim 1 wherein the length of the drawbar is shorter than the length of the grip portion.

4. The wire plier according to claim 1, wherein the fixed base is provided with at least N crimping holes and N slide ways with different configurations, the sliding base is provided with N pressing blocks matched with crimping connectors of the crimping holes, and N is a natural number not less than 1; the fixing base is also provided with a front panel and a rear panel, the front panel is provided with a through hole corresponding to the crimping hole, and the rear panel seals the crimping hole.

5. The wire plier according to claim 1, wherein a shearing portion is further provided on the base handle; the grip part is sleeved with a handle sleeve.