CN111856652A

CN111856652A - Optical fiber cutting device

Info

Publication number: CN111856652A
Application number: CN202010691751.8A
Authority: CN
Inventors: 赵阳日
Original assignee: Inno Instrument (china) Inc
Current assignee: Inno Instrument (china) Inc
Priority date: 2020-07-17
Filing date: 2020-07-17
Publication date: 2020-10-30
Also published as: WO2022011848A1

Abstract

The utility model provides an optical fiber cutting device for cutting optic fibre, includes the main part subassembly of holding and centre gripping optic fibre, and the lid subassembly is connected to the main part subassembly upside, and the main part subassembly surface is covered through the panel subassembly and is prevented that inside subassembly exposes, main part subassembly bottom includes the bottom plate. The optical fiber cutting device comprises a knife assembly, the knife assembly comprises a knife rest main body, the knife rest main body comprises a blade and a blade gear which are coaxial, and the blade gear is meshed with the one-way ratchet wheel. The knife assembly further comprises a moving portion and a limiting portion, the limiting portion is used for limiting the knife rest main body, and the moving portion is used for driving the knife rest main body to move. The cover body assembly comprises a cover body push rod, and the cover push rod is used for limiting the tool rest assembly. The panel component comprises a third elastic body, and two sides of the third elastic body are respectively connected with the tool rest main body and the panel component.

Description

Optical fiber cutting device

Technical Field

The invention relates to the field of optical fiber cutting equipment, in particular to an optical fiber cutting device.

Background

The optical fiber is made of glass or plastic and can be used as a light conduction tool, and the conventional optical fiber cutter is generally provided with an optical fiber pressing and holding device and a cutter assembly in a structure, wherein the optical fiber is pressed by the optical fiber pressing and holding device, and the cutter assembly cuts the optical fiber to realize the cutting of the optical fiber.

However, the existing optical fiber cutting device is mostly in a manual operation mode, the blade is of a fixed structure, the position of the blade is mostly replaced by a manual tool, namely, the cutting of the optical fiber is carried out through the hand pressing knife assembly, and in the actual use process, the cutting device can be unchanged for an operator.

Disclosure of Invention

The invention aims to solve the problem of how to make up the defects of the prior art and provide an optical fiber cutting device capable of automatically returning and rotating a cutter.

The technical problem of the invention can be solved by the following technical scheme:

the utility model provides an optical fiber cutting device for cutting optic fibre, includes the main part subassembly of holding and centre gripping optic fibre, and the lid subassembly is connected to the main part subassembly upside, and the main part subassembly surface is covered through the panel subassembly and is prevented that inside subassembly exposes, main part subassembly bottom includes the bottom plate.

The optical fiber cutting device comprises a knife assembly, the knife assembly comprises a knife rest main body, the knife rest main body comprises a coaxial blade and a blade gear, the blade gear is meshed with the unidirectional ratchet wheel, and the unidirectional ratchet wheel rotates in a unidirectional mode to realize unidirectional automatic rotation of the blade.

The knife assembly further comprises a moving portion and a limiting portion, the limiting portion is used for limiting the knife rest main body, and the moving portion is used for driving the knife rest main body to move.

The cover body assembly comprises a cover body push rod, and the cover push rod is used for limiting the tool rest assembly.

The panel component comprises a third elastic body, and two sides of the third elastic body are respectively connected with the tool rest main body and the panel component.

Further, the lid push rod with lid subassembly inboard becomes the obtuse angle, the push rod is located the downside of lid subassembly and stretches out downwards, lid push rod head includes the push rod rotator, the push rod rotator is rotatable roller bearing.

Furthermore, the limiting part comprises a limiting shaft, the panel assembly comprises a limiting shaft accommodating groove, and the limiting shaft extends into the limiting shaft accommodating groove to connect the limiting part with the panel assembly; one side of the limiting part comprises a fourth elastic body, and two sides of the fourth elastic body are respectively connected with the limiting part and the panel component.

The fourth elastic body enables the limiting part to rotate by taking the limiting shaft as an axis, and the fourth elastic body enables one side of the limiting part comprising the fourth elastic body to always have downward force.

Further, the middle of the tool rest main body comprises a tool rest guide seat, and the blade, the one-way ratchet and the moving part are respectively positioned at two sides of the tool rest guide seat; the motion part and the tool rest guide seat comprise a clamping part, and the limiting part is arranged above the clamping part.

Further, the limiting part comprises a limiting surface, the clamping part comprises a clamping surface, and under the action of the force of the fourth elastic body, the limiting surface is always in contact with the clamping surface to limit the knife rest main body.

Furthermore, the limiting part comprises a pressing surface, the panel assembly comprises a limiting pressing hole, the pressing surface is accommodated in the panel assembly, and the cover body assembly comprises a cover body pressing part protruding out of the lower edge of the cover body assembly; when the cover pressing part penetrates through the limiting pressing hole to press the pressing surface, the fourth elastic body is compressed, the limiting part rotates, and the limiting surface leaves the clamping surface.

Further, a knife assembly hook is arranged on the moving part, and the panel assembly comprises a panel hook and a third elastic body; the two sides of the third elastic body are respectively connected with the knife assembly hook and the panel hook, and the natural contraction of the third elastic body enables the knife rest main body to always have backward movement force.

Further, the motion part comprises a push surface in contact with the cover body push rod, when the cover body push rod rotates along with the cover body, the cover body push rod pushes the push surface to move, the third elastic body is stretched, and the tool rest main body can move.

Further, the cover assembly includes a cover closure gap, the panel assembly includes a switch gap, the panel assembly includes a closure switch, the closure switch includes a closure switch push cap and a closure switch protrusion; the closing switch push cover is exposed outside the panel assembly, the closing switch bulge is positioned between the closing gap of the cover body and the switch gap, the closing switch bulge bulges towards the direction of the cover body assembly, and the width of the closing switch bulge is not more than that of the closing gap; when the closing switch bulge is positioned in the closing gap, the opening and closing of the cover body assembly are not affected; closing the cover assembly when the closure tab is clear of the cover closure gap.

Further, the panel assembly includes a counter that can record the number of cuts; the motion part comprises a counting key, the bottom of the motion part comprises a sensing device, and the counting key and the sensing device can record cutting times and reflect data to a counter.

Compared with the prior art, the beneficial effect that this patent reaches is:

the optical fiber cutting device can realize automatic knife return of the knife rest and the blade through the cooperation of a plurality of mechanisms, and the blade automatically rotates. The operation is convenient, the cost is low, the structure is simple and convenient, and the batch production is easy.

Drawings

FIG. 1 is an exploded view of the overall structure of the optical fiber cleaver of the present invention;

FIG. 2 is a schematic view of the main assembly of the fiber cleaver of the present invention;

FIG. 3 is a schematic view of a cover assembly of the optical fiber cleaver of the present invention;

FIG. 4 is a top down view of the face plate assembly of the fiber cleaver of the present invention;

FIG. 5 is a bottom view of the face plate assembly of the fiber cleaver of the present invention;

FIG. 6 is a schematic view of the blade assembly portion assembly of the fiber cleaver of the present invention;

FIG. 7 is another perspective view of the blade assembly portion assembly of the fiber cleaver of the present invention;

FIG. 8 is a schematic view of a pressing and limiting assembly of the optical fiber cleaver of the present invention;

FIG. 9 is a schematic view of the overall appearance of the optical fiber cleaver of the present invention;

FIG. 10 is a cross-sectional view of an initial state of the optical fiber cleaver of the present invention;

FIG. 11 is another cross-sectional view of the fiber cleaver of the present invention in its initial state;

FIG. 12 is a schematic sectional view of the optical fiber cleaver in a blade direction in a state of being retracted;

FIG. 13 is a schematic sectional view of the elastic body in the state of being retracted for cutting the optical fiber according to the present invention;

FIG. 14 is a schematic view showing a state in which the cutter unit of the optical fiber cutter of the present invention is retracted;

FIG. 15 is a schematic view of another angle of the cutter assembly of the optical fiber cutter according to the present invention in a position-limited retracting state;

FIG. 16 is a schematic view of the initial state of the blade assembly of the fiber cleaver of the present invention;

FIG. 17 is a schematic view of a fiber cleaver of the present invention in use;

FIG. 18 is a schematic view of the fiber cleaver of the present invention shown closed.

Reference numerals in the figures

The main body assembly 1, the upper grip assembly 11, the upper pressure pad 111, the lower grip assembly 12, the lower pressure pad 121, the cutting gap 122, the first elastic body 13, the connecting shaft 14, the clamp 15, the counter 17, the cover assembly 2, the second elastic body 21, the cover shaft hole 22, the cover push rod 23, the push rod rotator 231, the cover closing gap 24, the cover pressing portion 25, the panel assembly 3, the panel shaft hole 31, the knife assembly accommodating portion 32, the knife assembly guide portion 321, the clamp accommodating portion 33, the switch gap 34, the limit pressing hole 35, the fourth elastic body accommodating hole 351, the limit shaft accommodating groove 352, the counter accommodating groove 36, the panel hook 37, the close switch 38, the close switch protrusion 381, the close switch push cover 382, the close switch position clip 383, the third elastic body 39, the bottom plate 4, the knife assembly 5, the knife rest main body 51, the knife rest guide shaft 511, the one-way ratchet 52, the knife blade 53, the blade gear, The knife assembly comprises a moving part 54, a pushing surface 541, an inclined surface 542, a top surface 543, a knife assembly hook 544, a counting key 545, a limiting part 55, a limiting shaft 551, a limiting surface 552, a pressing surface 553, a fourth elastic body 554, a smooth surface 555, a clamping part 56, a clamping surface 561, a clamping inclined surface 562 and a clamping plane 563.

Detailed Description

The present invention will be further described below based on preferred embodiments with reference to the accompanying drawings.

In addition, the various components on the drawings are enlarged (thick) or reduced (thin) for convenience of understanding, but this is not intended to limit the scope of the present invention.

Singular references also include plural references and vice versa.

In the description of the embodiments of the present invention, it should be noted that, if the terms "upper", "lower", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that are usually placed when the products of the present invention are used, the orientations or positional relationships are only for convenience of describing the present invention and simplifying the description, and the terms do not indicate or imply that the devices or elements indicated must have specific orientations, be constructed in specific orientations, and operate, and thus, the present invention should not be construed as being limited. Furthermore, the terms first, second, etc. may be used in the description to distinguish between different elements, but these should not be limited by the order of manufacture or by importance to be understood as indicating or implying any particular importance, and their names may differ between the detailed description of the invention and the claims.

The terminology used in the description is for the purpose of describing the embodiments of the invention and is not intended to be limiting of the invention. It is also to be understood that, unless otherwise expressly stated or limited, the terms "disposed," "connected," and "connected" are intended to be open-ended, i.e., may be fixedly connected, detachably connected, or integrally connected; they may be mechanically coupled, directly coupled, indirectly coupled through intervening media, or may be interconnected between two elements. Those skilled in the art will specifically understand that the above description is intended to be within the meaning of the present invention.

Referring to fig. 1 and 9, the optical fiber cutting apparatus according to the present invention is used for cutting an optical fiber, and includes a main body assembly 1 for accommodating and clamping the optical fiber, a cover assembly 2 connected to an upper side of the main body assembly 1, a panel assembly 3 covering a surface of the main body assembly 1 to prevent an inner assembly from being exposed, and a bottom plate 4 disposed at a bottom of the main body assembly 1.

Referring to fig. 1, 6 and 9, the optical fiber cutting device includes a knife assembly 5, the knife assembly includes a knife rest main body 51, the knife rest main body 51 includes a coaxial blade 53 and a blade gear 531, and the blade gear 531 is engaged with the one-way ratchet 52.

The one-way ratchet 52 is fixedly connected with the panel component 3, specifically, the inside of the one-way ratchet 52 is connected with the panel component 3 through a shaft, and after the connection, the one-way ratchet 52 rotates around the shaft.

The one-way ratchet 52 can only rotate in one direction, and when the one-way ratchet 52 rotates in the reverse direction, the one-way ratchet 52 is static and does not rotate.

The blade gear 531 is engaged with the one-way ratchet 52, when the blade gear 531 is driven by the knife assembly to reciprocate, the one-way ratchet 52 rotates along with the blade gear 531 in one direction, but when the blade gear 531 is driven by the knife assembly to move in the opposite direction, the one-way ratchet 52 is stationary and does not rotate, and the blade gear 531 rotates under the limiting action of the one-way ratchet 52 to drive the blade 53 to rotate.

The above-mentioned motion is constantly reciprocal for blade 53 continuously takes place unidirectional rotation, is favorable to protecting the blade, and the different positions of blade are all used in every cutting, prevent that same department from continuously cutting and causing the local wear of blade.

Referring to fig. 1, fig. 6 to 9, the knife assembly further includes a moving portion 54 and a limiting portion 55, the limiting portion 55 is used for limiting the knife rest main body 51, and the moving portion 54 is used for driving the knife rest main body 51 to move.

Referring to fig. 1 and 2, the main body assembly 1 includes an upper holding assembly 11 and a lower holding assembly 12 for holding an optical fiber during cutting, the upper holding assembly 11 and the lower holding assembly 12 respectively include an upper pressure pad 111 and a lower pressure pad 112, the number of the upper pressure pad 111 and the number of the lower pressure pad 121 are 2, the lower holding assembly 12 further includes a cutting gap 122, the cutting gap 122 can accommodate a blade 53, the blade 53 can extend out of the cutting gap 122 and be located between the 2 lower pressure pads 121, when cutting, the upper pressure pad 111 and the lower pressure pad 121 are attached to each other, the optical fiber is pressed from two sides of the cutting gap 122, the blade 53 cuts the optical fiber through the cutting gap 122, and when cutting, a rubber pad (not shown) in the middle of the upper pressure pad 111 strikes the optical fiber.

Referring to fig. 1 to 4, the main body assembly 1 includes a connecting shaft 14, the cover body assembly 2 includes a cover body shaft hole 22, the panel assembly 3 includes a panel shaft hole 31, the connecting shaft 14 passes through the cover body shaft hole 22 and the panel shaft hole 31 respectively to connect the cover body assembly 2 and the panel assembly 3, and the cover body assembly 2 and the upper holding assembly 12 are rotatable about the connecting shaft 14.

Referring to fig. 1 to 3 and 9, the main body assembly 1 includes a first elastic body 13, the first elastic body 13 is a zigzag elastic body, a rotation axis thereof is a connection axis 14, and the first elastic body 13 always has a force to separate the cover assembly 2 and the upper handle assembly 11 from the panel assembly 3, and the cover assembly 2 and the upper handle assembly 11 are always located away from the panel assembly 3 under the action of the first elastic body 13 without other acting force.

Referring to fig. 1 to 2, the main body assembly 1 includes a clamp 15 for clamping an optical fiber and a counter 17 for recording the number of times of cutting.

Referring to fig. 1 and 3, the cover assembly 2 includes a second elastic body 21, and after the cover assembly 2 is connected to the main assembly 1, the second elastic body 21 is located at the back of the upper holding assembly 11, so that the upper holding assembly 11 can elastically move.

Referring to fig. 1 and 3, the cover assembly 2 includes a cover push rod 23, an obtuse angle is formed between the push rod 23 and the inner side of the cover assembly 2, the push rod 23 is located at the lower side of the cover shaft hole 22 and extends downward, the head of the cover push rod 23 includes a push rod rotator 231, and the push rod rotator 231 is a rotatable roller.

Referring to fig. 1, fig. 3 to fig. 5, fig. 17 and fig. 18, the cover assembly 2 includes a cover closing gap 24, the panel assembly 3 includes a switch gap 34 and a closing switch 38, and the closing switch 38 passes through the switch gap 34 and can extend into the cover closing gap 24. The cover closure gap 24 is elongated and functions to receive a closure switch 38.

Referring to fig. 3 and 1, the cover assembly 2 includes a pressing portion 25, the pressing portion 25 protrudes from a lower surface of the cover assembly 2, and the pressing portion 25 is used for pressing the limiting portion 55.

Referring to fig. 1, 4 and 5, the panel assembly 3 includes a knife assembly receiving portion 32 for receiving the knife assembly 5. The counter holder further comprises a clamp accommodating part 33 for accommodating the clamp 15, a limiting pressing hole 35 for accommodating the limiting part 55, and a counter accommodating groove 36 for accommodating the counter 17.

Referring to fig. 1, 4 to 6, the knife assembly receiving portion 32 includes a knife assembly guiding portion 321 for guiding the knife assembly 5, the knife assembly 5 includes a knife rest guiding shaft 511, and the knife rest guiding shaft 511 is inserted into the knife assembly guiding portion 321, so that the knife assembly 5 axially moves under the guiding action of the knife assembly guiding portion 321.

Referring to fig. 1, 4 to 6 and 10, the panel assembly 3 includes a third elastic body 39, two sides of the third elastic body 39 are respectively hung on the panel hook 37 of the panel assembly 3 and the knife assembly hook 544 of the knife assembly 5, and the third elastic body 39 naturally contracts in a natural state, so that the knife assembly 5 always has a force approaching the panel hook 37.

Referring to fig. 1, 4-6, the panel assembly includes a closing switch 38, a portion of the closing switch 38 exposed outside the panel assembly 3 is a closing switch pushing cover 382, and the closing switch pushing cover 382 drives the closing switch 38 to move between the cover closing gap 24 and the switch gap 34. The part of the closing switch located between the cover closing gap 24 and the switch gap 34 includes a closing switch protrusion 381, the closing switch protrusion 381 protrudes toward the cover assembly 2, the width of the closing switch protrusion 381 is not greater than the width of the closing gap 24, and when the closing switch protrusion 381 is located in the closing gap 24, the opening and closing of the cover assembly 2 are not affected; when lid subassembly 2 is closed, with when the centre gripping optic fibre is connected to panel components 3, the protruding 381 of closed switch can slide and leave the closed space 24 of lid, at this moment, the card of the protruding 381 of closed switch is gone into the rear side of lid subassembly 2, the protruding 381 of closed switch will lid subassembly 2 is closed spacingly, lid subassembly 2 can't be opened, realizes closing of lid subassembly 2.

The close switch 38 further includes a close switch clamping position 383, a cylinder is provided on the panel component 3, when the close switch 38 closes the cover component 2, the close switch clamping position 383 is slidingly clamped into the cylinder on the panel component 3, so that the close switch 38 is prevented from sliding randomly.

Referring to fig. 1, 6 to 8, and 14 to 16, the knife assembly 5 includes a main body 51, the main body 51 includes a guiding seat 511 in the middle, one side of the guiding seat 511 includes a blade 53 and a one-way ratchet 52, the other side includes a moving portion 54, a clamping portion 56 is disposed between the moving portion 43 and the guiding seat 511, and the limiting portion 55 is disposed above the clamping portion 56.

Referring to fig. 1, fig. 6 to fig. 8, and fig. 14 to fig. 16, the limiting portion 55 includes a limiting shaft 551, the panel assembly 31 includes a limiting shaft receiving groove 352, and the limiting shaft 551 extends into the limiting shaft receiving groove 352 to connect the limiting portion 55 and the panel assembly 3.

One side of the position-limiting portion 55 includes a fourth elastic body 554, one side of the fourth elastic body 554 is connected to the position-limiting portion 55, and the other side of the fourth elastic body 554 is accommodated in a fourth elastic body accommodating hole 351 of the panel assembly 3, the fourth elastic body 554 can enable the position-limiting portion 55 to rotate around the position-limiting shaft 551, and under the effect of no external force, the fourth elastic body 554 enables the side including the fourth elastic body 554 to always incline downwards.

The stopper 55 includes a stopper surface 552, the detent 56 includes a detent surface 561, and in a natural state of the fourth elastic body 554, the stopper surface 552 always contacts the detent surface 561 to restrict the holder main body 51.

The position-limiting portion 55 includes a pressing surface 553, the pressing surface 553 is received in the position-limiting pressing hole 35, when the cover pressing portion 25 passes through the position-limiting pressing hole 35 to press the pressing surface 553, the fourth elastic body is compressed, the position-limiting portion 55 rotates, and the position-limiting surface 553 is separated from the seating surface 561.

The bottom of the limiting portion 55 includes a smooth surface 555.

The positioning portion 56 includes a positioning inclined surface 562 and a positioning plane 563, when the positioning portion 55 is pressed by the cover pressing portion 25, the main body 51 is not limited by the positioning portion 55, at this time, if the main body 51 moves backward and the external force pressing the positioning surface 552 disappears, the positioning portion 55 can be recovered under the action of the fourth elastic body 554, the smooth surface 555 is in contact with the positioning inclined surface 562, at this time, when the main body 51 moves forward, the positioning inclined surface 562 and the smooth surface 555 cannot be limited until the main body 51 moves forward until the smooth surface 55 does not contact with the positioning plane, the positioning plane 563 again contacts with the positioning surface 552, and the main body 51 moves backward.

The main tool holder body 51 comprises a moving part 54, a tool assembly hook 544 is arranged on the moving part 54, and the natural contraction of the third elastic body 39 enables the main tool holder body 51 to always have a backward movement force.

The moving portion 54 includes a pushing surface 541 contacting with the cover push rod 23, and when the cover push rod 23 rotates with the cover, the cover push rod 23 pushes the pushing surface 541 to move, so as to stretch the third elastic body 39.

The moving portion 54 further includes an inclined surface 542 and a top surface 543, and the top surface 543 contacts with the lower surface of the panel assembly 3, so that the knife rest assembly 51 is parallel to the panel assembly 3 and keeps the horizontal direction unchanged.

The motion portion 54 further comprises a counter button 545, the bottom portion of which comprises a sensing device, the counter button 545 contacts the bottom plate sensing device when the cover assembly 2 is opened, the counter 17 displays counting once, the counter button 545 moves away from the sensing device when the tool holder body 51 moves, counting is not performed again, and counting is performed again when the counter button 545 contacts the sensing device again.

Referring to fig. 1 to 18, the optical fiber cutting apparatus according to the present application includes an initial state and a cutting-back state, in the initial state, the cover assembly 2 and the panel assembly 3 are closed, and in the cutting-back state, the cover assembly 2 and the panel assembly 3 are separated, and the following describes the working process and the working principle of the present application with reference to the drawings.

Before use, the optical fiber cleaver is closed, and at this time, the closing switch projection 381 of the closing switch 38 is located at the rear side edge of the cover assembly 2, so that the cover assembly 2 cannot be opened. At this time, the cap pressing portion 25 presses the pressing surface 553, the stopper portion 55 does not have a stopper effect on the holder main body 51, the third elastic body 39 contracts, and the knife unit 5 approaches the closing slit 38 direction.

Sliding closure switch push cap 382 drives closure switch protrusion 381 to slide into cover closure gap 24, at which time cover assembly 2 may be opened and closed.

When the limit function of the closing switch 38 is lost, the first elastic body 13 drives the cover assembly 2 and the upper holding assembly 11 fixedly connected with the cover assembly to move away from the panel assembly 3, and the optical fiber cutting device is opened.

At this time, the cap unit 2 is rotated about the connecting shaft 14 by the first elastic body 13, and the cap pusher 23 is also rotated, thereby starting to rotate in the direction of the tool holder main body 51.

At this time, the pressing of the pressing surface 553 by the cover pressing portion 25 disappears, the stopper portion 55 rotates about the stopper shaft 551 by the fourth elastic body 554, and the smooth surface 555 contacts the stopper slope 562 and the stopper plane 563.

At this time, since the elastic force of the first elastic body 13 is smaller than that of the third elastic body 39, the cover assembly 2 stops after being opened to about a half position.

The cover assembly 2 is manually opened to the end, and the cover assembly 2 is rotated to be fully opened.

At this time, the push rod rotating body 231 of the cover push rod 23 contacts the pushing surface 541 of the tool holder main body 51, and drives the tool holder main body 51 to move axially in a direction away from the connecting shaft 14.

When the cover assembly 2 is manually opened, the third elastic body 39 is stretched, and when the cover assembly 2 is completely opened, the limiting surface 552 of the limiting portion 55 contacts with the clamping surface 561 of the tool holder main body for limiting, and the limiting portion 55 limits the tool holder main body 51 so that the tool holder main body is not retracted and pulled back by the third elastic body 39.

In the process, the knife rest main body 1 moves to drive the blade 53 to move along with the movement, the one-way ratchet 52 is meshed with the blade gear 531, and the one-way ratchet 52 cannot move in the direction, so that the blade gear 531 rotates to drive the blade 53 to rotate, and the blade 53 automatically rotates.

The cover assembly 2 is fully opened and the fiber is placed on the clamp 15 and the lower pressure pad 121, and the fiber placement is complete.

The cover assembly 2 is manually closed.

In the process of closing the cover assembly 2, the cover assembly 2 rotates to drive the cover push rod 23 to be away from the push surface 541, the limiting function of the cover push rod 23 disappears, the limiting part 55 limits the tool rest assembly 51, and the tool rest assembly 51 keeps a position away from the connecting shaft 14.

When the cover assembly 2 is manually closed to bring the upper pressure pad 111 and the lower pressure pad 121 into substantial contact, the optical fiber is pressed between the upper pressure pad and the lower pressure pad, and the tension of the first elastic body 13 causes a slight gap between the upper handle assembly 11 and the cover assembly 2.

Continuing to press the cover body assembly 2 to press and compress the first elastic body 13; the upper pressure pad 111 is pressed against the lower pressure pad 121 and the optical fiber is completely pressed.

At this time, the cover assembly 2 and the panel assembly 3 are closed, the cover pressing portion 25 presses the pressing surface 553, the fourth elastic body 554 is compressed, the limiting portion 55 rotates, the limiting effect of the limiting surface 552 on the clamping surface 561 disappears, the tool holder main body 51 moves in the direction of the connecting shaft 14 under the action of the third elastic body 39, the blade 53 is driven to move, and the blade passes through the space between the upper pressing pad 111 and the lower pressing pad 121, so as to cut the optical fiber.

And if the optical fiber needs to be cut again, repeating the actions and opening the cover body assembly 2 again.

While the invention has been described in detail and with reference to specific embodiments thereof, it will be apparent to one skilled in the art that various changes and modifications can be made therein without departing from the spirit of the invention, and it is intended to claim all such changes and modifications as fall within the scope of the appended claims.

Claims

1. The utility model provides an optical fiber cutting device for cutting optic fibre, including the main part subassembly of holding and centre gripping optic fibre, the lid subassembly is connected to the main part subassembly upside, and the main part subassembly surface prevents that the inside subassembly from exposing through the covering of panel components, main part subassembly bottom includes bottom plate, its characterized in that:

the optical fiber cutting device comprises a knife assembly, the knife assembly comprises a knife rest main body, the knife rest main body comprises a blade and a blade gear which are coaxial, the knife rest main body also comprises a one-way ratchet wheel fixedly connected with the panel assembly, the blade gear is meshed with the one-way ratchet wheel, and the one-way ratchet wheel rotates in a one-way mode to realize the unidirectional automatic rotation of the blade;

the knife assembly further comprises a moving part and a limiting part, the limiting part is used for limiting the knife rest main body, and the moving part is used for driving the knife rest main body to move;

the cover body assembly comprises a cover body push rod, and the cover body push rod is used for limiting the tool rest main body;

2. An optical fiber cleaver device according to claim 1, wherein:

The cover body push rod and the inner side of the cover body assembly form an obtuse angle, the cover body push rod is located on the lower side of the cover body assembly and extends downwards, the head of the cover body push rod comprises a push rod rotating body, and the push rod rotating body is a rotatable rolling shaft.

3. An optical fiber cleaver device according to claim 1, wherein:

the limiting part comprises a limiting shaft, the panel assembly comprises a limiting shaft accommodating groove, and the limiting shaft extends into the limiting shaft accommodating groove to connect the limiting part with the panel assembly;

one side of the limiting part comprises a fourth elastic body, and two sides of the fourth elastic body are respectively connected with the limiting part and the panel component;

4. An optical fiber cleaver device according to claim 3, wherein:

the middle of the tool rest main body comprises a tool rest guide seat, and the blade, the one-way ratchet wheel and the moving part are respectively positioned at two sides of the tool rest guide seat;

the motion part and the tool rest guide seat comprise a clamping part, and the limiting part is arranged above the clamping part.

5. An optical fiber cleaver device according to claim 4, wherein:

the limiting part comprises a limiting surface, and the clamping part comprises a clamping surface;

under the action of force of the fourth elastic body, the limiting surface is always in contact with the clamping surface to limit the knife rest main body.

6. An optical fiber cleaver device according to claim 5, wherein:

the limiting part comprises a pressing surface,

the panel component comprises a limiting pressing hole, the pressing surface is accommodated in the panel component,

the cover body assembly comprises a cover body pressing part protruding out of the lower edge of the cover body assembly;

when the cover pressing part penetrates through the limiting pressing hole to press the pressing surface, the fourth elastic body is compressed, the limiting part rotates, and the limiting surface leaves the clamping surface.

7. An optical fiber cleaver device according to claim 1, wherein:

the moving part is provided with a knife assembly hook,

the panel component comprises a panel hook and a third elastic body;

the two sides of the third elastic body are respectively connected with the knife assembly hook and the panel hook, and the natural contraction of the third elastic body enables the knife rest main body to always have backward movement force.

8. An optical fiber cleaver device according to claim 7, wherein:

the motion part comprises a push surface in contact with the cover body push rod, when the cover body push rod rotates along with the cover body, the cover body push rod pushes the push surface to move, the third elastic body is stretched, and the tool rest main body can move.

9. An optical fiber cleaver device according to claim 1, wherein:

the cover assembly comprises a cover closing gap, the panel assembly comprises a switch gap, the panel assembly comprises a closing switch, and the closing switch comprises a closing switch push cover and a closing switch bulge;

the closing switch push cover is exposed outside the panel assembly, the closing switch bulge is positioned between the closing gap of the cover body and the switch gap, the closing switch bulge bulges towards the direction of the cover body assembly, and the width of the closing switch bulge is not more than that of the closing gap;

when the closing switch bulge is positioned in the closing gap, the opening and closing of the cover body assembly are not affected; closing the cover assembly when the closure tab is clear of the cover closure gap.

10. An optical fiber cleaver device according to claim 1, wherein:

The panel assembly includes a counter that can record the number of cuts;

the motion part comprises a counting key, the bottom of the motion part comprises a sensing device, and the counting key and the sensing device are used for recording cutting times and reflecting data to the counter.