CN207764408U - A kind of fiber cut pen - Google Patents

Abstract

The utility model discloses a kind of fiber cut pen, barrel chamber is opened up on the bottom face of cylinder, the through-hole through barrel chamber is opened up on the left side of cylinder.In through-holes, shaft passes through the both ends of through-hole and shaft to be respectively positioned on outside cylinder for the outer ring interference fit ground socket of bearing, is socketed on the inner ring of bearing to shaft interference fit.It is socketed in shaft to support wheel interference fit, circular ring shape cutter is fixed on the periphery of support wheel.Gear on the right side of cylinder is socketed in shaft with being interference fitted, fixed block is fixed on the right side of cylinder, both ends of the spring is separately fixed at fixed block lower end and the countercheck rod top of vertical rotation axis, and the blocking protrusion to match with the slot form of gear is fixed on the bottom end of countercheck rod.A part for the gear tooth slot quantity of cutter blade point is located at outside barrel chamber.When spring is in initial position, blocking protrusions snap is in the tooth socket of gear.Repeatedly can simply and easily replace can use blade, save cost.

Description

A kind of fiber cut pen

Technical field

The utility model is related to a kind of fibre-cutting tool more particularly to a kind of fiber cut pens.

Background technology

Optical fiber is writing a Chinese character in simplified form for optical fiber, is that the total reflection in a kind of fiber made of glass or plastics using light is former The light conduction tool managed and reached.Optical fiber is invented by preceding Hong Kong Chinese University principal Gao Kun.Fine optical fiber is encapsulated in modeling Expect in sheath so that it can be bent and be unlikely to be broken.In general, the emitter of one end of optical fiber uses light emitting diode （Light emitting diode, LED）Or light pulse is sent to optical fiber, the reception device of the other end of optical fiber by beam of laser Pulse is detected using light-sensitive element.In daily life, it is conducted in electric wire than electricity in the conduction loss of optical fiber due to light Be lost it is much lower, optical fiber be used as long range information transmit.

The typical structure of optical fiber is a kind of elongated multilayer coaxial cylindrical entity composite fibre.It is from inside to outside：Fibre core（Core Layer）→ covering → coat（Coating）.Core is fibre core and covering, and the two collectively forms dielectric optical waveguide, fibre core The refractive index that refractive index is more than covering realizes light so as to form conduction and constraint to optical signal using total reflection principle Transmission, so the optical fiber that the two is constituted is known as bare fibre again.Wherein coat is also known as coating, is a floor height molecular coatings, Mainly mechanical protection is provided to bare fibre.The lateral surface diameter of optical fiber coating is in 250 microns, the outside of the covering of optical fiber Face diameter is in 125 microns.

When optical signal transmission fiber, with the increase of transmission range, light will produce decaying and influence transmission range, institute With the decaying for testing optical fiber is the big event of optical fiber quality detection, and optical time domain reflectometer（OTDR）It is main optical attenuation Measuring instrument must clamp the coat of optical fiber with Mirror with OTDR tests decaying and divest, then use optical fiber cutter light Fibre is cut into the disk of vertical fiber axis, in the decaying for measuring testing fiber with OTDR by connector.

Now in optical fiber cable production firm, test optical fiber amount is very big, and tester is cut using easy pen type Cutter cuts out the edge of a knife on optical fiber, then knocks off optical fiber and forms disconnected fine face to test decaying with OTDR, pen type on the market is cut Often only there are one knife face, the damage of this knife face will be replaced knife, cause great waste in this way.

Utility model content

The technical issues of the utility model solves the problem of is encountered for the technical solution of background technology, to above-mentioned skill Art scheme improve and has proposed the utility model, to solve the technical issues of above-mentioned technical proposal is encountered.

The utility model to solve above-mentioned technical problem the technical solution adopted is that：

A kind of fiber cut pen, including cylinder, cutter, support wheel, bearing, shaft, fixed block, spring, countercheck rod, blocking Protrusion, gear；A rectangular column shape barrel chamber is opened up on the bottom face of cylinder described in rectangular column shape, is opened up on the left side of the cylinder One runs through the through-hole of the barrel chamber, the left and right side wall surface of the vertical barrel chamber of the through-hole；The outer ring of the bearing is interference fitted Ground is socketed in the through-hole, and the shaft passes through the both ends of the through-hole and the shaft to be respectively positioned on outside the cylinder, described It is socketed on the inner ring of the bearing to shaft interference fit；The support wheel is located in the barrel chamber and is socketed with being interference fitted In the shaft, cutter described in circular ring shape is fixed on the periphery of the support wheel；Described on the right side of the cylinder It is socketed in the shaft to gear interference fit, the fixed block is fixed on the right side of the cylinder, the fixed block Right over the gear, vertically the countercheck rod of the rectangular column shape of the shaft is located at right over the gear and described Immediately below fixed block, the both ends of the spring is separately fixed at the fixed block lower end and the countercheck rod top, with the gear The blocking protrusion that matches of slot form be fixed on the bottom end of the countercheck rod；The gear teeth slot number of the cutter blade A part for amount point is located at outside the barrel chamber；When the spring is in initial position, the spring heads on institute through the countercheck rod Blocking protrusions snap is stated in the tooth socket of the gear.

In a kind of fiber cut pen, a push rod is fixed on the right side top of the countercheck rod.

In a kind of fiber cut pen, the guiding of a vertical shaft is fixed on the right side of the cylinder Pipe, the guiding tube is located at right over the gear and the underface of the fixed block, the internal face shape of the guiding tube and The countercheck rod side view matches, and the countercheck rod passes through the guiding tube.

The utility model has the beneficial effects that：When the tooth socket of gear is in the position that can be blocked protrusions snap, at this time Cutter expose barrel chamber outside knife edge part be an available blade.When normal use fiber cut pen, spring makes countercheck rod The blocking protrusion of bottom end is stuck in the tooth socket of gear, prevents gear from rotating, that is, the available knife of circular ring shape cutter is determined Sword, such user of service can remove cutting optical fibre using cutting pen.When replacing the available blade of cutter, spring is overcome Elastic force is pulled upwardly countercheck rod, and blocking protrusion is made to leave the tooth socket of gear, and then, rotate gear makes support wheel, cutter synchronization turn It is dynamic, when knife to be cut turns to a new available blade, countercheck rod is decontroled, countercheck rod moves downward under spring force effect, Up in the blocking protrusions snap of countercheck rod bottom end tooth socket new on gear, cutter exposes the part formation one of barrel chamber at this time New available blade thus can remove cutting optical fibre with new available blade.How many tooth socket of gear there is how many A available blade, and replace and blade can be used simple and convenient, the utilization rate of cutter blade is substantially increased in this way, is saved into This, improves efficiency.

Description of the drawings

Fig. 1 is the structural schematic diagram of fiber cut pen；

Fig. 2 is the structural schematic diagram of cutter；

Fig. 3 is the structural schematic diagram of gear, countercheck rod, blocking protrusion, shaft.

Reference sign in figure：1, cylinder；2, barrel chamber；3, cutter；4, support wheel；5, bearing；6, shaft；7, through-hole； 8, fixed block；9, spring；10, push rod；11, guiding tube；12, countercheck rod；13, stop protrusion；14, gear.

Specific implementation mode

The utility model is described in further detail with reference to the accompanying drawings and examples：

A kind of fiber cut pen as shown in Figures 1 to 3, including cylinder 1, cutter 3, support wheel 4, bearing 5, shaft 6, fixation Block 8, spring 9, countercheck rod 12, blocking protrusion 13, gear 14.

A rectangular column shape barrel chamber 2 is opened up on the bottom face of rectangular column shape cylinder 1, opening up one on the left side of cylinder 1 runs through The through-hole 7 of barrel chamber 2, the left and right side wall surface of 7 vertical barrel chamber 2 of through-hole.

It is socketed in through-hole 7 to the outer ring interference fit of bearing 5, shaft 6 passes through the both ends of through-hole 7 and shaft 6 to be respectively positioned on Outside cylinder 1, it is socketed on the inner ring of bearing 5 to the interference fit of shaft 6.

Support wheel 4 is located in barrel chamber 2 and is socketed in shaft 6 with being interference fitted, and circular ring shape cutter 3 is fixed on support wheel 4 Periphery on.In the present embodiment, in cutter 3 along the section of 6 axis of shaft, the cutting edge shape of cutter 3 is that triangle is pointed.

Gear 14 positioned at 1 right side of cylinder is socketed in shaft 6 with being interference fitted, and fixed block 8 is fixed on the right side of cylinder 1 On face, fixed block 8 is located at right over gear 14, the countercheck rod 12 of the rectangular column shape of vertical rotation axis 6 be located at right over gear 14 with Immediately below fixed block 8,9 both ends of spring are separately fixed at 12 top of 8 lower end of fixed block and countercheck rod, the slot form with gear 14 The blocking protrusion 13 to match is fixed on the bottom end of countercheck rod 12.That is, blocking protrusion 13 can be fastened on 14 tooth socket of gear In so that gear 14, shaft 6 cannot rotate, to keep cutter 3 not rotate, thus maintain the stability of cutter 3.Upwards Pull-up countercheck rod 12 makes blocking protrusion 13 leave 14 tooth socket of gear, so that it may with rotate gear 14, to make cutter 3 rotate.

A part for the 14 tooth socket quantity of gear of 3 blade of cutter point is located at outside barrel chamber 2.When the tooth socket of gear 14 is in energy quilt When stopping the position that protrusion 13 engages, the knife edge part outside the exposing barrel chamber 2 of cutter 3 at this time is an available blade.In this way The tooth socket quantity of gear 14 how many, with regard to how many available blade.In the present embodiment, using the gear 14 of 10 gear teeth, then The ten of 3 blade of cutter/part is located at outside barrel chamber 2, that is to say, that cutter 3 has 10 available blades.

When spring 9 is in initial position, spring 9 heads on the tooth socket that blocking protrusion 13 is fastened on gear 14 through countercheck rod 12 In.That is, when spring 9 is in initial position, cutter are in normal serviceable condition.

Preferably, a push rod 10 is fixed on the right side top of countercheck rod 12.It can facilitate in this way and push countercheck rod 12 It is moved upwardly by, so that blocking protrusion 13 leaves 14 tooth socket of gear.

Preferably, the guiding tube 11 of a vertical rotation axis 6 is fixed on the right side of cylinder 1, guiding tube 11 is located at gear 14 The underface of surface and fixed block 8, internal face shape and 12 side view of countercheck rod of guiding tube 11 match, countercheck rod 12 Across guiding tube 11.Be conducive to maintain the position of countercheck rod 12 in this way without departing to keep blocking protrusion 13 to be fastened on tooth The state in 14 tooth sockets is taken turns, that is, keeps cutter 3 not rotate.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model Protection domain within.

Claims (3)

1. a kind of fiber cut pen, which is characterized in that including cylinder, cutter, support wheel, bearing, shaft, fixed block, spring, resistance Bar, blocking protrusion, gear；A rectangular column shape barrel chamber, a left side for the cylinder are opened up on the bottom face of cylinder described in rectangular column shape A through-hole for running through the barrel chamber, the left and right side wall surface of the vertical barrel chamber of the through-hole are opened up on side；Outside the bearing It is socketed in the through-hole to circle interference fit, the shaft passes through the both ends of the through-hole and the shaft to be respectively positioned on the cylinder In vitro, it is socketed on the inner ring of the bearing to the shaft interference fit；The support wheel is located in the barrel chamber and interference It is ordinatedly socketed in the shaft, cutter described in circular ring shape is fixed on the periphery of the support wheel；Positioned at the cylinder It is socketed in the shaft to the gear interference fit on right side, the fixed block is fixed on the right side of the cylinder, The fixed block is located at right over the gear, and the countercheck rod of the rectangular column shape of the vertical shaft is being located at the gear just Immediately below top and the fixed block, the both ends of the spring is separately fixed at the fixed block lower end and the countercheck rod top, The bottom end of the countercheck rod is fixed on the blocking protrusion that the slot form of the gear matches；The cutter blade it is described A part for gear tooth slot quantity point is located at outside the barrel chamber；When the spring is in initial position, the spring is through the resistance Bar heads on the blocking protrusions snap in the tooth socket of the gear.

2. a kind of fiber cut pen according to claim 1, which is characterized in that solid on the right side top of the countercheck rod A fixed push rod.

3. a kind of fiber cut pen according to claim 1, which is characterized in that fix one on the right side of the cylinder and hang down The guiding tube of the straight shaft, the guiding tube is located at right over the gear and the underface of the fixed block, the guiding The internal face shape of pipe matches with the countercheck rod side view, and the countercheck rod passes through the guiding tube.