CN102878882B

CN102878882B - Double-zero-position electronic meter caliper ruler

Info

Publication number: CN102878882B
Application number: CN201210362722.2A
Authority: CN
Inventors: 吴大卫
Original assignee: SHENZHEN ZHONGHUI ANZAI TRADE Co Ltd
Current assignee: SHENZHEN ZHONGHUI ANZAI TRADE CO., LTD.
Priority date: 2011-09-26
Filing date: 2011-09-26
Publication date: 2014-04-16
Anticipated expiration: 2031-09-26
Also published as: CN102878882A

Abstract

The invention provides a double-zero-position electronic meter caliper rule, which includes a double-zero-position rule body and micrometer mechanisms, wherein the double-zero-position rule body includes a main rule and a secondary rule; the secondary rule is provided with a front secondary rule and a rear secondary rule, the rear secondary rule can move within a limited range relative to the front secondary rule with the moving direction parallel with the integer graduation arranging direction; the front secondary rule is provided with a movable measuring jaw and a measuring mark; the front secondary rule is responsible for measuring the integer value of the measuring value, and the rear secondary rule is responsible for measuring the difference between the measuring value and the integer value; and a positioning shaft is arranged in the rear secondary rule, and the caliper rule is also provided with a lever, a self-locking mechanism and an engaging and disengaging gear for jointly controlling the displacement of the front secondary rule and the rear secondary rule. The double-zero-position electronic meter caliper rule adopts the new concept of double-zero-position measurement, can greatly shorten the working strokes of the modern micrometer mechanisms as cursor lines, scales and electronic sensors to the maximum degree of 1mm theoretically, thereby laying a highly favorable foundation for breaking through the four great technical limits of the modern caliper rule.

Description

A kind of pair of zero-bit electronic watch slide calliper rule

The application is that application number is: 201110288801.9, and denomination of invention is: the dividing an application of two zero-bit calipers.

Technical field

The present invention relates to slide calliper rule technical field, concrete is a kind of pair of zero-bit electronic watch slide calliper rule.

Technical background

Slide calliper rule are a kind of survey instruments of the remote past, at the beginning of its ancient history can be traced to century in Christian era, China at that time just invented ancient times slide calliper rule and application aborning.Although the slide calliper rule in ancient times of China do not have micrometer mechanism, can not measure the numerical value that is less than 1 millimeter, but it has had fixing main scale and the secondary chi that can move along main scale, on main scale and secondary chi all respectively with measuring claw, can relative motion between two pawls, thereby can block measured object, measure.The structure that this has nimble property, has experienced thoroughly tempered test, becomes the classics of structure of calipers, still by all modern slide calliper rule, is scrupulously abided by and enjoys and cannot surmount so far.Modern slide calliper rule are just many a set of micrometer mechanism, thereby can measure and show the numerical value that is less than 1 millimeter.

Slide calliper rule, because it is simple in structure, change leeway is little, make the update cycle of slide calliper rule extremely very long.From in 9 years Christian eras in made in China ancient times slide calliper rule count, go through first dial caliper, Japan in 1980 that Americanized first vernier caliper in 1851, Switzerland in 1973 the manufacture electronic caliper of producing that takes the lead in, bimillennium is lasted so far in front and back.

All known slide calliper rule up to now, no matter slide calliper rule or the modern slide calliper rule used of Global Access in Chinese ancient times, all according to the conceptual design of " single zero-bit ", the measured value that is slide calliper rule is to be all that the measurement operation of quiet measuring jaw obtains by leaving the fixing original zero-bit in a position, its record be the displacement from original zero-bit to measured point.The measurement concept of this " single zero-bit " has been continued to use two over thousands of years, has both obtained immense success, has also produced some technological limits that cannot go beyond so far, and that is exactly: 1. the highest display precision of vernier caliper can only reach 0.02 millimeter.Therefore 2. the tooth bar length of dial caliper must be greater than calibrated span, and then manufactures and be greater than the wide range dial caliper of 1 meter and be still so far blank.3. displacement of the lines volume grate electronic slide calliper rule so far can not waterproof.4. all known slide calliper rule all can cause indicating value difference because of gauger's big or small difference of exerting oneself.This four large technological limit has become specialty final conclusion, and they are obstacles of manufacturing better slide calliper rule, but is difficult to cross over.Bimillennium, accumulates above-mentioned four large technological limits in slide calliper rule field, has no precedent breakthrough.

Summary of the invention

For four described large technological limits, the invention provides a kind of new principle of slide calliper rule design, and a kind of slide calliper rule chi body that can embody this new principle, and the Novel caliper that scale, electronic sensor and three kinds of different micrometer mechanisms of vernier form is installed respectively on this chi body.These Novel calipers had both been broken the old principle that never has change 2 over thousands of years, had retained again the classical feature of modern slide calliper rule completely, can break through four described large technological limits comprehensively.Need explanation, the slide calliper rule chi body of addressing and the Novel caliper that three kinds of different micrometer mechanisms have been installed respectively of addressing, the relevance on possessing skills, they form content of the present invention jointly.

Described slide calliper rule design new principle is: first set each measured value and equal round values+fractional value sum.Main scale is provided with original zero-bit, for measuring round values, and take round values as decimal zero-bit, for measuring fractional value, is called for short " two zero measurement ".According to " two zero measurement " new principle, the modern micrometer mechanisms such as vernier, scale, electronic sensor are all only for measuring relatively a certain integer-valued fractional value, therefore, its impulse stroke all can significantly shorten, and can shorten in theory maximum is only the degree of 1 millimeter.So, shift motion on coupling stroke on engagement travel between dial caliper upper rack and gear, electronic caliper between moving fixed grid, vernier caliper between vernier line and integer groove, all, by within being confined at the most the theoretical scope of 1 millimeter, this just makes to break through four described large technological limits becomes possibility.Because " two zero measurement " new principle must realize by transformation and the innovation of chi body, for this reason, the special slide calliper rule chi body that can embody this new principle is referred to as two zero-bit chi bodies, all slide calliper rule of on two zero-bit chi bodies, different micrometer mechanisms being installed and being formed are referred to as two zero-bit calipers, by the character of micrometer mechanism, be called two zero-bit stem-winder slide calliper rule, two zero-bit electronic watch slide calliper rule and two zero-bit vernier caliper again, to be different from conventional known.

Technical scheme of the present invention is as follows: a kind of pair of zero-bit caliper, comprises two zero-bit chi bodies and micrometer mechanism; Described pair of zero-bit chi body comprises main scale and secondary chi; Described micrometer mechanism is mechanical scale or electronic displacement sensor or vernier subdividing device; Described main scale has quiet measuring jaw and main scale chi body, and it is the integer groove of the integral multiple of 1 millimeter that described main scale chi body is marked with distance between two, apart from the nearest initial integer groove of quiet measuring jaw, is original zero-bit; Described secondary chi contains described main scale chi body can be relative to the self-locking of described main scale chi body motionless or move along the orientation of described integer groove;

Described secondary chi has front secondary chi and rear secondary chi, and described rear secondary chi can move relative to described front secondary chi in limited range, and moving direction is parallel with the orientation of described integer groove; Described front secondary chi has momentum pawl and mark; Described front secondary chi is responsible for measuring the round values of measured value, and described rear secondary chi is responsible for measuring the poor of measured value and described round values;

Described front secondary chi is a framework, described framework bottom pivot joint one lever, and this lever free end is provided with a roller that can freely rotate, and this roller is near the downside of described main scale chi body; Described lever and described rear secondary chi are provided with the clutch cooperatively interacting, when pressing described roller and making downside that it contacts described main scale chi body, described deviation of lever, described clutch is closed, now, described forward and backward secondary chi forms the rigid structure of synchronous shift; Unclamp described roller, described lever resets, and described clutch separately;

The self-locking mechanism that on described front secondary chi, also tool is comprised of lock shaft and Compress Spring; Described lock shaft is provided with locking face and described main scale chi body closely supports, thereby described front secondary chi is locked on described main scale chi body and can not moves; Lever described in the butt of described lock shaft one end, the power that described lever is applied on described lock shaft makes described locking face separated with described main scale chi body, thereby the locking state between described front secondary chi and described main scale chi body is removed, and now described front secondary chi can move along the orientation of described integer groove; Described lever is applied to power on described lock shaft cancel after, described Compress Spring makes described lock shaft reset, and makes described lock shaft return to the locking state closely supporting with described main scale chi body;

Described rear secondary chi is also a framework, and rear secondary chi has a locating shaft that only can move along direction of axis line, described locating shaft is partly placed in framework, on described locating shaft, is set with flexible member, and this flexible member can make described locating shaft reset after making its external force that produces displacement cancel;

It is concavo-convex that described main scale is provided with a registration, the radially section configuration of the shape that described location is concavo-convex and described locating shaft matches, the concavo-convex quantity in described location at least can make its spread length equal calibrated span, described in each, locate concavo-convex shape and size identical, described in each, locate concavo-convex center and keep changeless corresponding relation with described integer groove, and the concavo-convex centre distance in adjacent two described location equates; When the mark of described front secondary chi is aimed at described original zero-bit, press described roller and make described clutch closed, the symcenter of described locating shaft and locate concavo-convex center superposition described in certain, this location is concavo-convex, and to be initial location concavo-convex;

Described forward and backward secondary chi separated a bit of distance in the orientation along described integer groove, is designated as δ ＇; Described front secondary chi and described rear secondary chi are provided with the stop means cooperatively interacting, and described stop means makes the maximum displacement distance ≯ δ ＇ of the relatively described front secondary chi of described rear secondary chi; When described clutch is closed, the separating distance of described forward and backward secondary chi in the orientation along described integer groove, is designated as δ, δ ＇ > δ >=1 millimeter and equal a described location of row concavo-convex in adjacent two centre distance that location is concavo-convex;

The relative motion part of described micrometer mechanism be packed in respectively on described front secondary chi and described rear secondary chi on, make described micrometer mechanism can produce impulse stroke; Described micrometer mechanism is only measured and the shift length that shows the relative described front secondary chi of described rear secondary chi.

Preferably, described clutch is V-type protuberance and the V-type recess cooperatively interacting.

Preferably, described locating shaft is a ball head.

Preferably, described location is concavo-convex is pilot hole, and the diameter of pilot hole is less than the sphere diameter of described ball head.

Preferably, press described roller make its contact main scale downside time, the periphery of described roller is concordant with the edge surface of described lever.

Preferably, concavo-convex center, described location and the even number groove of described integer groove keep fixed relationship one to one.

Pair zero-bit stem-winder slide calliper rule, comprise two zero-bit chi bodies and micrometer mechanism; Described pair of zero-bit chi body comprises main scale and secondary chi; Described micrometer mechanism is the mechanical indicating gauge with gear set; Described main scale has quiet measuring jaw and main scale chi body, and it is the integer groove of the integral multiple of 1 millimeter that described main scale chi body is marked with distance between two, apart from the nearest initial integer groove of quiet measuring jaw, is original zero-bit; Described secondary chi contains described main scale chi body can be relative to the self-locking of described main scale chi body motionless or move along the orientation of described integer groove;

The framework of described rear secondary chi is extended protuberance to the direction near described original zero-bit, and it is inner that this protuberance extend into described front secondary chi, is fixed with a short tooth bar on this protuberance; One suppresses protuberance described in reed butt is close to described protuberance and described main scale downside; The described stem-winder with gear set is installed in described front secondary chi; Described gear set is meshed in the inner space of described front secondary chi with described short tooth bar, and the maximal value of engagement travel is δ ＇;

The described mechanical indicating gauge with gear set is only measured and the shift length that shows the relative described front secondary chi of described rear secondary chi.

Pair zero-bit electronic watch slide calliper rule, comprise two zero-bit chi bodies and micrometer mechanism; Described pair of zero-bit chi body comprises main scale and secondary chi; Described micrometer mechanism is displacement of the lines electronic sensor; Described main scale has quiet measuring jaw and main scale chi body, and it is the integer groove of the integral multiple of 1 millimeter that described main scale chi body is marked with distance between two, apart from the nearest initial integer groove of quiet measuring jaw, is original zero-bit; Described secondary chi contains described main scale chi body can be relative to the self-locking of described main scale chi body motionless or move along the orientation of described integer groove;

Described displacement of the lines electronic sensor, has the waterproof sealing box that is installed in described front secondary chi, and described waterproof sealing box is in-built wiring board and moving grid plate, and described wiring board and moving grid plate are by which couple, and the maximal value of coupling stroke is δ ＇; Described moving grid plate is connected with a driving shaft, and it is outside and affixed and drive described moving grid plate to move with described rear secondary chi synchronous linear with described rear secondary chi that described driving shaft passes through and reach described waterproof sealing box; Described waterproof sealing box surface is provided with electronic display, and described electronic display is electrically connected to described wiring board, and the integer-bit showing on it o'clock is solidified as 0 in δ=2; Described driving shaft passes through described waterproof sealing box place and is provided with sealing bearing;

Described displacement of the lines electronic sensor is only measured and the shift length that shows the relative described front secondary chi of described rear secondary chi.

Pair zero-bit electronic watch slide calliper rule, comprise two zero-bit chi bodies and micrometer mechanism; Described pair of zero-bit chi body comprises main scale and secondary chi; Described micrometer mechanism is angular displacement electronic sensor; Described main scale has quiet measuring jaw and main scale chi body, and it is the integer groove of the integral multiple of 1 millimeter that described main scale chi body is marked with distance between two, apart from the nearest initial integer groove of quiet measuring jaw, is original zero-bit; Described secondary chi contains described main scale chi body can be relative to the self-locking of described main scale chi body motionless or move along the orientation of described integer groove;

The framework of described rear secondary chi is to extending protuberance two near the direction of described original zero-bit, and it is inner that this protuberance two extend into described front secondary chi, and one suppresses protuberance two described in reed two butts is close to described protuberance two with described main scale downside; A short tooth bar two is packed on protuberance two in the inner space of described front secondary chi;

Described angular displacement sensor has the gear set two being fixedly mounted with front secondary chi, and the output terminal of described gear set two is a turning axle two; Described gear set two and described short tooth bar two tight mesh in the inner space of described front secondary chi, the maximal value of engageable stroke is δ ＇; Described angular displacement sensor also has the waterproof sealing box two being fixedly mounted with described front secondary chi, and described turning axle two passes through and enters in described waterproof sealing box two, and there is waterproof sealing bearing two at the place of passing through; In described waterproof sealing box two, circuit board two is housed, described turning axle two is fixedly mounted with a circular moving grid sheet in described waterproof sealing box two, and described circular moving grid sheet can synchronously rotate with described turning axle two; Described circular moving grid sheet and the coupling of described circuit board two-way oversampling circuit, by detecting described circular moving grid sheet, relative to the angle position of described circuit board two and described circular moving grid sheet, move the rotating cycle producing because of described short tooth bar two, and measure and the straight-line displacement distance that shows that the relative described front secondary chi of described rear secondary chi occurs, the maximal value of this straight-line displacement distance is δ ＇; Described waterproof sealing box two surfaces are provided with electronic display two, and described electronic display two is electrically connected to described wiring board two, and the integer-bit showing on it o'clock is solidified as 0 in δ=2.

A pair zero-bit vernier caliper, comprises two zero-bit chi bodies and micrometer mechanism; Described pair of zero-bit chi body comprises main scale and secondary chi; Described micrometer mechanism is vernier subdividing device; Described main scale has quiet measuring jaw and main scale chi body, and it is the integer groove of the integral multiple of 1 millimeter that described main scale chi body is marked with distance between two, apart from the nearest initial integer groove of quiet measuring jaw, is original zero-bit; Described secondary chi contains described main scale chi body can be relative to the self-locking of described main scale chi body motionless or move along the orientation of described integer groove;

Described vernier subdividing device has the coulisse affixed with described front secondary chi and the actuator affixed with described rear secondary chi; On described coulisse, be fixedly mounted with a straight-line displacement amplifier, the input end of described straight-line displacement amplifier is provided with described actuator, output terminal and is provided with vernier cylinder, described vernier cylinder can standard slide in described coulisse, after described straight-line displacement amplifier is received the shift length of described rear secondary chi and amplified by described actuator, then export to described vernier socket joint receipts; One row is engraved on described coulisse apart from the little groove that is 1 millimeter between two, one section of vernier line is engraved on described vernier cylinder and is coplanar with described little groove, and the described vernier line that can move about and relatively-stationary described little groove be common forms coplanar no parallax vernier reading device;

The effective shift motion of maximum of the relatively described little groove of described vernier line is δ K, and K is the enlargement factor of described straight-line displacement amplifier; Enlargement factor K can choose as required, when K=10: described vernier line is by 9 millimeters of spread lengths of described little groove are divided into 10 equal portions settings, the arrangement total length of described little groove is 10 * (δ+1), and the display precision of described vernier subdividing device is designated 0.01 millimeter;

Described vernier subdividing device is only measured and the shift length that shows the relative described front secondary chi of described rear secondary chi.

Beneficial effect of the present invention: the of the present invention pair of zero-bit caliper broken the slide calliper rule designed older principle that never there is change bimillennium, adopted " two zero measurement " new principle, the four large technological limits that the modern slide calliper rule of the disposable comprehensive leap of energy face, make conventional known slide calliper rule produce unprecedented new variation, technical progress is remarkable.Because effect is many-sided, linksystem, its more effect content will outline in specific embodiment.

Accompanying drawing explanation

Fig. 1 is the design concept figure of of the present invention pair of zero-bit caliper;

Fig. 2 is the structural representation of of the present invention pair of zero-bit chi body;

Fig. 3 is another structural representation of of the present invention pair of zero-bit chi body, clear in order to show, does not show the frame lid of framework 213 in figure;

Fig. 4 is the partial structurtes schematic diagram of of the present invention pair of zero-bit chi body, clear in order to show, does not show main scale 100 in figure;

Fig. 5 is the structural representation of rear secondary chi of the present invention, clear in order to show, does not show the frame lid of framework 222 in figure;

Fig. 6 is the package assembly schematic diagram of front secondary chi 210 and rear secondary chi 220, clear in order to show, there is no to show the frame lid of front secondary chi 210 and the frame lid of rear secondary chi in figure;

Fig. 7 a is original zero-bit 111, front secondary chi 210, rear secondary chi 220, it is concavo-convex 150 to locate, the orderly relational structure schematic diagram between integer groove 112 5, clear in order to show, in figure after the frame cover Partial Resection of secondary chi frame lid and front secondary chi 210;

Fig. 7 b is the enlarged drawing at Fig. 7 a H place;

Fig. 8 a is the first design concept figure that the of the present invention pair of zero-bit chi body fractional value shows, clear in order to illustrate, and in figure, centre of sphere physical location has been moved apart to line of centres top from pilot hole line of centres, Fig. 8 b～Fig. 8 d all with;

Fig. 8 b is the second design concept figure that of the present invention pair of zero-bit chi body fractional value shows;

Fig. 8 c is the 3rd design concept figure that of the present invention pair of zero-bit chi body fractional value shows;

Fig. 8 d is the 4th design concept figure that of the present invention pair of zero-bit chi body fractional value shows;

Fig. 9 is the 3rd structural representation of of the present invention pair of zero-bit chi body, and in figure, clutch 400 is closure state;

Figure 10 a is the inner structure schematic diagram of of the present invention pair of zero-bit stem-winder slide calliper rule;

Figure 10 b is the external structure schematic diagram of of the present invention pair of zero-bit stem-winder slide calliper rule;

Figure 10 c is the mesh schematic representation of of the present invention pair of zero-bit stem-winder caliper rack and gear set;

Figure 11 a is the inner structure schematic diagram of of the present invention pair of zero-bit electronic watch slide calliper rule;

Figure 11 b is the external structure schematic diagram of of the present invention pair of zero-bit electronic watch slide calliper rule;

Figure 12 a is the structural representation of of the present invention pair of zero-bit electronic watch slide calliper rule, and these electronic watch slide calliper rule are comprised of the angular displacement electronic sensor of two zero-bit chi bodies and conventional known;

Figure 12 b is the short tooth bar 701 of electronic watch slide calliper rule shown in Figure 12 a and the structural representation of gear set 900 tight meshs;

Figure 12 c is the inner structure schematic diagram of the waterproof sealing box 2 1000 of electronic watch slide calliper rule shown in Figure 12 a;

Figure 13 a is the external structure schematic diagram of of the present invention pair of zero-bit vernier caliper;

Figure 13 b is the enlarged drawing at Figure 13 a I place;

Figure 13 c is the A section reading figure of of the present invention pair of zero-bit vernier caliper when t=T;

Figure 13 d is the B section reading figure of of the present invention pair of zero-bit vernier caliper when t=T-1;

Figure 13 e is the partial structurtes schematic diagram of of the present invention pair of zero-bit vernier caliper, clear in order to show, does not show vernier cylinder 215 in figure.

Embodiment

For the ease of understanding design concept and the embodiment of of the present invention pair of zero-bit caliper, below divide five parts that the present invention is described in detail in detail.

One, the design concept of of the present invention pair of zero-bit caliper

With reference to Fig. 1, on the main scale of each slide calliper rule, all indicating and maybe can indicating one group of least unit is the integer groove of 1 millimeter, and the initial value of this integer groove is " 0 ", is original zero-bit of the present invention.Slide calliper rule block measured object while measuring, and the position of a certain integer groove on main scale is always aimed at or crossed to the mark of slide calliper rule just, i.e. the position at measured value L place, and the numerical value that this integer groove represents is round values L1 of the present invention.The position at this integer groove place is decimal zero-bit of the present invention.Distance value between decimal zero-bit and measured value is fractional value t of the present invention.Therefore,, in the present invention, measured value L is round values L1 and fractional value t sum.The core of of the present invention pair of zero-bit caliper is to optimize the measurement of fractional value t.

Two, the structure of of the present invention pair of zero-bit chi body

With reference to Fig. 2, described two zero-bit chi bodies, comprise two zero-bit chi bodies and micrometer mechanism; Described pair of zero-bit chi body comprises the secondary chi 200 of main scale 100 and containing main scale 100.Main scale 100 has quiet measuring jaw 120 and main scale chi body 110, and it is the integer groove 112 of the integral multiple of 1 millimeter that main scale chi body 110 subscripts are marked with distance between two, and integer groove 112 is original zero-bit 111 apart from the nearest initial line that lines up of quiet measuring jaw 120.Described secondary chi 200 has front secondary chi 210 and rear secondary chi 220, and front secondary chi 210 has mark 211 and momentum pawl 212; Rear secondary chi 220 can slide by relatively front secondary chi 210 within the specific limits, and its glide direction is parallel with the orientation of integer groove 112.In of the present invention pair of zero-bit chi body, front secondary chi 210 is responsible for measuring round values, and rear secondary chi 220 is responsible for measuring the poor of measured value and described round values.

With reference to Fig. 3, front secondary chi 210 is frameworks 213, the lever 300 that the bottom pivot joint one of framework 213 only can be rotated around center of circle O, and the free end of lever 300 is provided with a roller that can freely rotate 310, and roller 310 is near the downside 130 of main scale 100.Lever 300 and rear secondary chi 220 are provided with the clutch 400 cooperatively interacting.Preferably, the protuberance 410 that clutch 400 is V-type and the recess 420 of V-type.Separated a bit of distance between front secondary chi 210 and rear secondary chi 220, the maximal value of this distance is designated as δ ＇; When clutch 400 tight closure, front secondary chi 210 and rear secondary chi 220 forms rigid structure that can synchronous shift, and the relative distance between front secondary chi 210 and rear secondary chi 220 is fixed value δ.Obviously, δ < δ ＇.

With reference to Fig. 3 and Fig. 4, on front secondary chi 210, be also provided with the self-locking mechanism 500 being formed by lock shaft 510 and Compress Spring 520, on lock shaft 510, there are locking face 511 and the upper side 140 of main scale chi body 110 closely to support, thereby front secondary chi 210 is locked on main scale chi body 110 and can not be moved freely; One end of

lock shaft

510 and 520 sockets of described Compress Spring, the other end 512 butt levers 300.When pressing roller 310 is during to the downside 130 of its conflict main scale chi body 110, deflection that lever 300 is counterclockwise, thereby promote lock shaft 510 and remove to compress Compress Spring 520, lock shaft 510 is subjected to displacement simultaneously, make locking face 511 leave the upper side 140 of main scale chi body 110, between front secondary chi 210 and main scale chi body 110, original locking state is disengaged, if rubbing roller 310 now, just can drive secondary chi 200 to move along the orientation of integer groove 112.After unclamping roller 310, Compress Spring 520 produces bounce resets lock shaft 510, and locking state recovers, and lock shaft 510 promotion levers 300 reset clockwise simultaneously.

With reference to Fig. 5, rear secondary chi 220 is also a framework 222.Framework 222 is a built-in locating shaft 600, preferably, this locating shaft 600 is ball head.The handle 630 that locating shaft 600 has axis body 610, bulb 620 and exposes, locating shaft 600 only can be along its direction of axis line shift reciprocately; On axis body 610, be set with elastic spring 223, elastic spring 223 can make locating shaft 600 with bulb 620, reset after its external force being subjected to displacement is cancelled.

With reference to Fig. 6, front secondary chi framework 213 is provided with limited block 213a, and rear secondary chi framework 222 is provided with spacing hole 222a, and limited block 213a and spacing hole 222a cooperatively interact, to limit maximum moving distance ≯ δ ＇ of the relatively front secondary chi 210 of rear secondary chi 220.

With reference to Fig. 7 a and Fig. 7 b, it is concavo-convex that the downside 130 of main scale chi body 110 is provided with a registration, preferably, a described registration is concavo-convex be a registration hole 150(for sake of convenience, be designated as round 150); Shape and the size of each pilot hole (for sake of convenience, being designated as a hole 150 ') are all identical, and its internal diameter is less than the sphere diameter of bulb 620; Centre distance between every two adjacent holes 150 ' all equates, and often the center in each and every one hole 150 ' all keeps fixed relationship one to one with the corresponding groove of certain root of integer groove 112, and this corresponding relation can be chosen definite as required.For small-range slide calliper rule, often each and every one hole 150 ' preferably keeps fixed relationship one to one with the even number groove of integer groove 112, now the centre distance between every two adjacent holes 150 ' is 2 millimeters, and the total quantity in individual hole 150 ' is at least half of calibrated span numerical value.In order clearly to show the relation between described round 150 and described bulb 620, Fig. 7 b is the enlarged drawing at Fig. 7 aH place.

The reference position of round 150 is to determine like this: when quiet measuring jaw 120 closures of momentum pawl 212 and the main scale 100 of secondary chi 200, before during the original zero-bit 111 of 211 pairs of pre-integral grooves 112 of mark of secondary chi 210, pressing roller 310 makes clutch 400 tight closure, the centre of sphere of bulb 620 coaxially overlaps with certain each and every one center in hole 150 ' just, and the position in this hole 150 ' is the reference position of round 150.Now original zero-bit 111, front secondary chi 210, rear secondary chi 220, round 150, integer groove 112 have just been set up the fixing order relation that has between this, even throw off and caused order relation to be damaged because of clutch 400, but as long as clutch 400 closures, this have order relation to recover.The reasoning of being not difficult: under this constraint that has an order relation, suppose closed clutch 400, while making front secondary chi 210 and rear secondary chi 220 move to the centre of sphere of bulb 620 as an Integral synchronous and shown in Fig. 7 a, the center in the second each and every one hole 150 ' coaxially overlaps from left to right, the mark 211 of front secondary chi 210 will be just to pre-integral groove " 2 ".By that analogy, between front secondary chi 210 and rear secondary chi 220, forever keeping the setting relation of 2 millimeters, these 2 millimeters is exactly the original start value δ of separating distance between front secondary chi 210 and rear secondary chi 220, i.e. δ=2, and now δ ＇ is slightly larger than 2.For wide range slide calliper rule, often each and every one hole 150 ' can not chosen even number groove with integer groove 112 and keeps one to one fixed relationship but choose other fixed correspondence, and at this moment the value of δ and δ ＇ is also corresponding changes to some extent.No matter choose the fixed relationship of which kind of correspondence, must guarantee δ >=1.The following stated all be take δ=2 as prerequisite.

150 ' Kong center, individual hole after location positioning is equivalent to described decimal zero-bit.

Once being equivalent to described decimal zero bit position, individual hole 150 ' determines, mean: current secondary chi 210 and rear secondary chi 220 synchronous shift and leave after original zero-bit 111, when no matter, secondary chi 210 is positioned on main scale chi body 110 any position and is locked in this position, as long as it is mobile that the bulb of locating shaft 600 620 occurs, while going coaxially to overlap with near the center in certain each and every one hole 150 ' along the orientation of integer groove 112, the displacement of secondary chi 210 before the radially side force of locating shaft 600 must drive rear secondary chi 220 to produce relatively, and the shift length T of the relatively front secondary chi 210 of rear secondary chi 220, the distance t that must cross certain root integer groove to the mark 211 of front secondary chi 210 is that the fractional value of required measurement is relevant.The correlationship of T and t is:

Suppose 1: when locating shaft 600 is only during along axis single load bearing, bulb 620 can automatic landing enter in its certain nearest each and every one hole 150 ' and with the hole heart in this hole 150 ' coaxial coincidence naturally, two kinds of results that now there will be two kinds of situations:

With reference to Fig. 8 a, when bulb 620 is to move with the hole heart apart from its nearest individual hole 150 ' naturally during coaxial coincidence along approaching original zero-bit 111 directions, because T+2=t+2, so t=T.

With reference to Fig. 8 b, when bulb 620 is to move with the hole heart apart from its nearest individual hole 150 ' naturally during coaxial coincidence along deviating from original zero-bit 111 directions, because T=3-2-t, so t=1-T.

Suppose 2: when locating shaft 600 is axially and when radially simultaneously stressed, the bulb 620 vertically resultant direction of power and radial force goes and is forced to coaxial coincidence, two kinds of results that now also there will be two kinds of situations apart from its certain nearest each and every one hole heart in hole 150 ':

With reference to Fig. 8 c, when bulb 620 is to move when the hole heart apart from its nearest individual hole 150 ' is forced to coaxially overlap along deviating from original zero-bit 111 directions, because t+2=t '+2, so t=t '; Again because of t '=2-T, so t=2-T.

With reference to Fig. 8 d, when bulb 620 is to move when the hole heart apart from its nearest individual hole 150 ' is forced to coaxially overlap along approaching original zero-bit 111 directions, because t+2=t '+2, so t=t '; Again because of t '=T-1, so t=T-1.

4 kinds of above-mentioned correlationships are design considerationss that fractional value t shows.For the display characteristic of the various micrometer mechanisms of compatibility and take into account operation psychology, need simultaneously and be design considerations with t=T and t=T-1.The necessary condition that realizes this foundation is: 1. must remove to push ball head 600 along 3 o'clock direction and make bulb 620 be forced to fall into apart from its nearest last each and every one hole 150 ' (it is front approaching original zero-bit 111 directions); 2. the absolute prohibition bulb 620 of must limited location device take fall into nearest apart from it after hole 150 ' (deviating from original zero-bit 111 directions as rear) one by one, and absolute prohibition bulb 620 surmounts apart from its nearest last each and every one hole 150 ' and falls into more last each and every one hole 150 '.Because T value will not be greater than 2 millimeters, before free separating distance δ ' between secondary chi 210 and rear secondary chi 220 be chosen in the 2 millimeters of scopes that are slightly larger than.

With reference to Fig. 9, described pair of zero-bit chi body is work like this:

Step 1: thumb press rubbing roller 310, moving sets chi 200.

No matter secondary chi 200 is positioned at any position on main scale chi body 110, also no matter whether V-type protuberance 410 and the V-type recess 420 of clutch 400 depart from, as long as thumb press roller 310 makes the downside 130 of its contact main scale chi body 110, just there is at once counterclockwise deflection in lever 300, the original self-locking state of front secondary chi 210 and main scale chi body 110 is disengaged, and front secondary chi 210 can move freely along main scale chi body 110; Simultaneously V-type protuberance 410 is drawn close to V-type recess 420 until fit tightly, and clutch 400 closures, make forward and backward secondary chi 210 and 220 form the integral body of a rigidity, and front secondary chi 210 can drive rear secondary chi 220 synchronizing movings; Separating distance between front secondary chi 210 and rear secondary chi 220 is restored to original start value δ simultaneously.Now between front secondary chi 210 and rear secondary chi 220, can also there is no relative motion.For the pressing force of thumb can be applied directly on lever 300 all the time, to guarantee that clutch 400 is can be fully reliable closed, can make again the pressing force of thumb be applied to give rubbing on roller 310 to make secondary chi 200 occur displacement simultaneously.Preferably, the periphery 311 of roller 310 be designed to concordant with the edge surface 301 of lever 300.

Step 2: thumb leaves roller 310.

When secondary chi 200 moves to while locating, the numerical value of that root integer groove representative that the mark 211 of front secondary chi 210 is just aimed at or crossed is the defined round values L1 of the present invention.Now thumb stops rubbing and leaves roller 310, and pressing force is cancelled, and front secondary chi 210 recovers self-locking state again at once and no longer can move freely; Meanwhile, there is counterclockwise deflection in lever 300, and the V-type protuberance 410 of clutch 400 leaves V-type recess 420, clutch 400 separation.The integral body that front secondary chi 210 now and rear secondary chi 220 are no longer rigidity, can be there is displacement by the motionless front secondary chi 210 of self-locking relatively again in rear secondary chi 220.

Step 3: thumb press ball head.

Thumb leaves after roller 310, take advantage of a situation sliding be moved to the left side by 3 o'clock direction remove to promote and press the handle 630 that locating shaft 600 exposes, bulb 620 is forced to enter in immediate with it hole 150 ' until can not continue promote and press along secondary chi 210 directions before approaching, the hole heart in the individual hole 150 ' that now centre of sphere of bulb 620 enters with it must coaxially overlap.Rear secondary chi 220 under the drive of locating shaft 600 radial forces, also can be along with the movement of bulb 620 synchronous shift same distance.

So far, the course of work of described pair of zero-bit chi body finishes.If the relative motion part of on front secondary chi 210 and rear secondary chi 220, micrometer mechanism being installed respectively, described micrometer mechanism will measure with demonstrate step 3 process in after secondary chi 220 relative before the displacement of secondary chi 210, this displacement is the defined fractional value t of the present invention.The round values L1 of gained in step 2 process and fractional value t are added, just obtain a complete measured value.

Though the of the present invention pair of zero-bit chi body than the slide calliper rule operation of conventional known many pushing locating shaft 600 expose the action of handle 630, but thereby the requirement that it can meet two zero measurements can bring unprecedented variation to slide calliper rule, it is beneficial effect that while This move itself also separately has two technological values that can not be ignored:

1. realizing permanent dynamometry measures.The power no matter thumb press exposes handle 630 has much, thereby can not be delivered to, on the momentum pawl 212 of front secondary chi 210, contact the state of tested surface with momentum pawl 212 irrelevant, and irrelevant with the displayed value of micrometer mechanism, thereby realized permanent dynamometry and measured, avoided due to the different indicating value difference causing of ergometry, make measurement result more objective consistent, improved thus the Transfer Quality of value, this is that any modern slide calliper rule are all thirsted for realizing but unconsummated leap.

2. realize surveying and read separation.Due to after the momentum pawl 212 of front secondary chi 210 contacts with tested surface, front secondary chi 210 is in strength self-locking state, now dynamic and

static measuring jaw

212 and 120 can be moved apart gently and makes slide calliper rule leave measured piece, in the body gesture of the most comfortable, go down to push again and expose handle 630 and then reading, realized thus surveying and read separation, favourable to creating obstacles the measurement at position.

Three, of the present invention pair of zero-bit stem-winder slide calliper rule

The reading efficiency of dial caliper is higher than vernier caliper, reliability and the requirement of environment for use is all better than to electronic caliper, thereby have huge use crowd.Current known dial caliper without exception all: tooth bar is packed on main scale, with the indicating gauge of gear, is packed on secondary chi, and wheel and rack remains engagement, and the length of tooth bar must be greater than calibrated span.The disadvantage of this structure formula is: 1. tooth bar manufacture difficulty is large, process costs is high.The metric system tooth bar of 0.02 millimeter of display precision of take is example, and its modulus is only 0.19894, whole depth only has 0.45 millimeter, 3.2 millimeters of tooth bar overall widths, 1.6 millimeters of gross thickness.For this not only narrow but also thin accurate tooth bar, beyond doubt more shortly more easily manufacture, more long be more difficult to manufacture even cannot manufacture.Just because of this, the maximum range of dial caliper cannot be compared with electronic caliper with vernier caliper at present, and both maximum ranges have been accomplished at least 4 meters afterwards, and even surpass the dial caliper of 1 meter of range, is all still blank at present.2. measuring accuracy is difficult to guarantee.Because the tooth bar as measuring basis element is thin, narrow, long, even if tooth bar is manufactured qualified but in the process of turnover and installation tooth bar, also can be produced distortion, tooth bar distortion means that measuring basis has deviation, and measuring accuracy is to be difficult to reach gamut all accurately.3. serviceable life is short.In the use procedure of dial caliper, it can move apart from fast reciprocating (pulling open and loopback) process in the length that arrives measured point from original zero-bit by momentum face, gear and tooth bar are being done violent engaged transmission all the time, measure complete making zero while resetting, gear and tooth bar are done the reverse violent engaged transmission of long distance again, the frequency of occurrences of this violent engaged transmission is high, and invalid wearing and tearing are extremely huge.In one-shot measurement process, the invalid wearing and tearing transmission of gear and tooth bar accounts for 99%, has greatly shortened the Acceptable life of toothed element.4. general, the tooth bar of known dial caliper is open when measuring, and there is no protective capacities, and the foreign matters such as tiny iron filings and grinding grain can unobstructedly fall between cog, more can not be applied to dust occasion; Its between cog of open tooth bar also easily forms greasy filth incrustation, so that slide calliper rule are easy to occur pulling freely or by force do not pull the phenomenon that causes damage.The open defect of tooth bar has perplexed measurer circle decades, until No. 200620006379.8 Chinese patent publicities a kind of high protection dial caliper, just solved first the open problem of tooth bar, not enough, this invention does not solve the extremely huge problem of invalid wearing and tearing of toothed element.

The object of of the present invention pair of zero-bit stem-winder slide calliper rule is: realize a kind of short tooth bar, long-life, high protection, permanent dynamometry, energy self-locking, survey and read separable Purely mechanical dial caliper.

It is achieved in that a kind of pair of zero-bit stem-winder slide calliper rule, and by of the present invention pair of zero-bit chi body and micrometer mechanism, the mechanical scale 700 that described micrometer mechanism is conventional known forms; The required rack-and-pinion maximum engagement stroke of described mechanical scale 700 is δ ＇, but much smaller than calibrated span.

With reference to Figure 10 a, Figure 10 b and Figure 10 c.In of the present invention pair of zero-bit chi body, the framework 222 of rear secondary chi 220 is extended protuberance 224, and protuberance 224 extends to front secondary chi 210 inside always, and is close to main scale downside 130 under the effect of suppressing reed 225.A short tooth bar 701 is fixedly mounted with on protuberance 224 in the inner space of front secondary chi 210, and meshes with the gear set 702 that is packed in the mechanical scale 700 on front secondary chi 210, engageable stroke is δ ＇.By the job step of described pair of zero-bit chi body, can complete the measurement operation of described pair of zero-bit stem-winder slide calliper rule.Number reading method and the conventional known dial caliper of described pair of zero-bit stem-winder slide calliper rule are just the same: first read the integer on main scale, then the decimal of being expressed by circular scale on meter reading dish, then two numbers are added, be measured value.

Of the present invention pair of zero-bit stem-winder slide calliper rule have following technique effect:

1. broken through tooth bar length must be greater than calibrated span this from the technology forbidden zone that never cross over the beginning of the seventies in last century so far, tooth bar significantly shortens, easy to manufacture, not yielding, installs easy to adjustly, slide calliper rule precision is easy to guarantee.2. between gear and tooth bar, only have the effective engaged transmission of necessity of minimum distance, thereby the invalid wearing and tearing of toothed element are extremely small, therefore slide calliper rule significantly improve serviceable life.It is example that the traditional dial caliper of 150 millimeters of ranges, 0.02 millimeter of display precision of take is measured intermediate value 75 mm lengths: slide calliper rule pull open the two ends of blocking 75 mm lengths from closure state, the secondary chi of slide calliper rule at least needs mobile 75 millimeters; After measurement, slide calliper rule reset to closure state, need again mobile at least 75 millimeters, move 75 millimeters * 2=150 millimeter altogether for twice.The scale that display precision is 0.02 millimeter is that pointer often turns around is 2 millimeters, so the pointer of scale has turned 150 ÷ 2=75 circles altogether.And for two zero-bit stem-winder slide calliper rule of identical range, identical display precision, identical measuring process, when being applied to t=T, dial plate pointer only need at the most to rotate half-turn 0.5 circle just can complete measuring process.Both compare, 75=150 times, circle ÷ 0.5 circles.When being applied to t=T-1, also only need at the most to rotate 1 circle and just can complete measuring process, both compare, 75=75 times, circle ÷ 1 circles.So the wear extent of two zero-bit stem-winder slide calliper rule gear sets significantly reduces than traditional dial caliper, tested length is longer, and the reduction of the invalid wearing and tearing of gear set is just more remarkable.3. can manufacture the equally long wide range dial caliper (as 3 meter rulers, 4 meter rulers) of range and vernier caliper and electronic caliper, fill up manufacturing gap.4. the airtight antipollution of tooth bar, the granular foreign matters of infringement profile of tooth enters, and space width can not change.The height protection dial caliper of No. 200620006379.8 Chinese patent institutes publicity that protective capacities is the highest relatively at present, the tooth bar protective capacities of this chi is higher, can be sealing state, while needing, to the protective capacities of solid pollution material, can bring up to greatly known dial caliper IP60 level too far behind to catch up.5. due to front secondary chi with rear secondary chi is opened on main scale, be relative static conditions in loopback and reseting procedure, the pointer of scale be do not turn, be there is no engaged transmission between gear and tooth bar, therefore pull quick and stable more, measure efficiency therefore higher.6. relatively traditional dial caliper, the installation of tooth bar does not tie up main scale area, thereby integer groove plane spaciousness several times, more clear, more easily distinguish and read.7. scale used is without special design and manufacture separately, the highly versatile of core component.8. ergometry is constant, is not subject to gauger's big or small impact of exerting oneself, and has avoided due to the different indicating value difference causing of ergometry, and measurement result is more objective consistent, has improved the Transfer Quality of value.9. can survey and read separation, especially aobvious convenient for the diameter measurement in the operation of depth survey or engine lathe or other measurement of creating obstacles position, do not need torticollis twisting to remove reading or cannot reading.10. possesses strength self-locking function.Relatively traditional self-locking caliber rule, self-lock force is more powerful, but removes self-locking again because lever is far more easily laborsaving.

Four, of the present invention pair of zero-bit electronic watch slide calliper rule

The reading of electronic caliper is most effective, but the common volume grate electronic slide calliper rule of IP54 or lower protection level are very responsive to oily wastewater pollution.The present situation of current known electronic caliper is: in order to overcome the oily defect of the water funk fearness of volume grate electronic slide calliper rule, countries in the world manufacturer in succession Development and Production waterproof electronic caliper.The waterproof electronic caliper of successful Application has two classes at present, and a class is the principle waterproof electronic caliper of non-appearance grid, and another kind of is to hold with angular displacement the structurally waterproof electronic caliper that grid principle is made.Although the former has the ability of waterproof, but abandoned the advantage that the power consumption of volume grate electronic sensor is economic, be not afraid of strong magnetic, although the latter has reached the object of waterproof, do not solved the long-range dynamic seal (packing) problem of tooth bar, in dust atmosphere, operating mode is not good, and complex protection capability is not enough.By displacement of the lines, holding waterproof electronic caliper that grid principle makes so far there are no emerging, trace it to its cause, is because will realize in very limited space and the dynamic water seal of long grizzly bar that main scale is isometric is the high-leveled and difficult problem of generally acknowledging.But displacement of the lines capacitor grid transducer all has powerful advantages at aspects such as technology maturity, production lot, cost performance, battery endurance, diamagnetic performances, abandon the single goal that so many advantages go to reach waterproof, technology is of a high price.

The object of of the present invention pair of zero-bit electronic watch slide calliper rule is: realize a kind of permanent dynamometry, energy self-locking, survey and read accurate electronic type waterproof slide calliper rule separable, that can adopt various electronic displacement sensors to make.

It is achieved in that a kind of pair of zero-bit electronic watch slide calliper rule, and by of the present invention pair of zero-bit chi body and micrometer mechanism, the various displacement of the lines electronic sensors that described micrometer mechanism is conventional known form; Described displacement of the lines electronic sensor, comprises capacitance grating line displacement electron sensor; The maximum coupling stroke of described displacement of the lines electronic sensor is slightly larger than described original start value δ, but much smaller than calibrated span.

With reference to Figure 11 a and Figure 11 b, in of the present invention pair of zero-bit chi body, on front secondary chi 210, be fixedly mounted with a waterproof sealing box 800, all electronic units such as circuit board 801 are installed in waterproof sealing box 800 inside.A driving shaft 225 is fixedly mounted with rear secondary chi 220.Driving shaft 225 passes through and extend in the inner space of waterproof sealing box 800, and the moving grid plate 802 of drive waterproof sealing box 800 inside subsequently secondary chi 220 is synchronous static or mobile.Between moving grid plate 802 and circuit board 801, have which couple, coupling stroke is slightly larger than described original start value δ.Driving shaft 225 is equipped with sealing bearing (not shown) with the place of passing through of waterproof sealing box 800, can waterproof, grease proofing, dustproof.The shown integer-bit of electronic display 803 is solidified as 0 by processing of circuit.By the job step of described pair of zero-bit chi body, can complete the measurement operation of described pair of zero-bit electronic watch slide calliper rule.Number reading method and the conventional known dial caliper of described pair of zero-bit electronic watch slide calliper rule are just the same: first read the integer on main scale, then read the direct decimal being shown by numeral on display screen, then two numbers are added, be measured value.

Described electronic watch slide calliper rule also can adopt various angular displacement electronic sensors, and described angular displacement electronic sensor comprises and holds gating angular displacement electronic sensor.It is achieved in that a kind of pair of zero-bit electronic watch slide calliper rule, and by of the present invention pair of zero-bit chi body and micrometer mechanism, the angular displacement electronic sensor that described micrometer mechanism is conventional known forms;

With reference to Figure 10 a, Figure 12 a, Figure 12 b and Figure 12 c, in of the present invention pair of zero-bit chi body, the framework 222 of rear secondary chi 220 is extended protuberance 2 224 to the direction near described original zero-bit ', this protuberance 2 224 ' extend into front secondary chi 210 inside, one suppresses reed 2 225 ' butt protuberance 2 224 ' by protuberance 2 224 ' be close to main scale downside 130; On a short tooth bar 2 701 ' be packed in the inner space of front secondary chi 210 protuberance 2 224 '.

Described angular displacement sensor has the gear set 2 900 being fixedly mounted with front secondary chi, and the output terminal of gear set 2 900 is turning axle 2 901; Gear set 2 900 and short tooth bar 2 701 ' tight mesh in the inner space of front secondary chi 210, the maximal value of engageable stroke is δ ＇; Described angular displacement sensor also has the waterproof sealing box 2 1000 being fixedly mounted with front secondary chi 210, and turning axle 2 901 passes through and enter waterproof sealing box 2 1000 inside, and there is waterproof sealing bearing 2 1001 at the place of passing through, can waterproof, grease proofing, dustproof.

All electronic units such as circuit board 2 1002 are installed in waterproof sealing box 2 1000 inside.Circular moving grid sheet 2 1003 is fixedly mounted with turning axle 2 901 waterproof sealing box 2 1000 is inner, can with turning axle 2 901 synchronous rotaries or static.Between circular moving grid sheet 2 1003 and circuit board 2 1002, there is which couple, by detect circular moving grid sheet 2 1003 relative to the angle position of circuit board 2 1002 and circular moving grid sheet 2 1003 because of short tooth bar 2 701 ' move the rotating cycle producing, can measure and show rear secondary chi 220 relative before the straight-line displacement distance that occurs of secondary chi 210.The shown integer-bit of electronic display 2 1004 is solidified as 0 by processing of circuit.By the job step of described pair of zero-bit chi body, can complete the measurement operation of described pair of zero-bit electronic watch slide calliper rule.Number reading method and the conventional known dial caliper of described pair of zero-bit electronic watch slide calliper rule are just the same: first read the integer on main scale, then read the direct decimal being shown by numeral on display screen, then two numbers are added, be measured value.

Of the present invention pair of zero-bit electronic watch slide calliper rule have following technique effect:

1. can adopt and comprise that the various displacements of the lines and the angular displacement electronic sensor that hold grid make waterproof electronic caliper, can, with the water-proof function of low technology cost electron gain slide calliper rule, can bring into play the comprehensive advantages such as capacitor grid transducer power consumption is economized, diamagnetic ability is strong, cheap.2. complex protection capability is powerful, and no matter profile of tooth mechanical organ or electronic component all can resists solid-state and fluent meterial pollution, and degree of protection at least can reach IP65; 3. the advantage that has both conventional known dial caliper and conventional known electronic caliper, fractional value direct digital display, higher than the reading efficiency of conventional known dial caliper, wider than the usable range of the common volume grate electronic slide calliper rule of IP54 or lower protection level.④Gei slide calliper rule family has increased new varieties of having no precedent, and has very strong practicality, is particularly suitable for rapidly and efficiently measuring in having the environment of oily wastewater pollution.5. it is easily laborsaving that dynamometry is constant, separation, strength self-locking, release are read in survey.

Five, of the present invention pair of zero-bit vernier caliper

Thereby vernier caliper is that its uses reliable, but because the groove of vernier is intensive, generally will have 51 vernier lines by small quantity being amplified to the most frequently used instrument of accurate measuring length, thereby difficult judgment, reading efficiency are low.Tradition vernier caliper also owing to being subject to the restriction of human body naked eyes resolution limit, generally believe its display precision the highest can only reach 0.02 millimeter and can not be high again (the most accurate slide calliper rule vernier subdividing device can only be to be divided into 50 parts by 49 millimeters).Although can slide calliper rule vernier subdividing device be set by 0.01 millimeter of display precision completely and (be about to 99 millimeters and be divided into 100 parts in theory with in manufacturing technology, as the publicity of No. 200710300811.3 Chinese patent institutes), but approached 0.006 millimeter of the resolving power of the eye limit due to 0.01 millimeter, thereby in such height segmentation vernier device, judge that the alignment that overlaps the most of which root line is extremely difficult, even if at this moment adopt magnifier, also only by the same doubly amplification of gap between line, judgement is had no to help, thereby such height segmentation vernier is arranged on and on slide calliper rule, there is no practicality.Also the vernier length measurer that once had display precision can reach 0.01 millimeter occurs in the literature, but its profile and slide calliper rule are far apart, has been not slide calliper rule.So vernier caliper, since coming out, has not had the products in kind of 0.01 millimeter of display precision to emerge.

The object of of the present invention pair of zero-bit vernier caliper is: realize a kind of permanent dynamometry, can self-locking, survey and read separable, display precision higher than 0.02 millimeter but more easily distinguish the Novel vernier caliper of reading.

It is achieved in that a kind of pair of zero-bit vernier caliper, by of the present invention pair of zero-bit chi body and micrometer mechanism, and the vernier subdividing device that described micrometer mechanism is conventional known, and a straight-line displacement amplifier forms.The effective shift motion of maximum of described vernier subdividing device is δ K, and δ is original start value of the present invention, and K is the enlargement factor of described straight-line displacement amplifier.δ K is much smaller than calibrated span.

With reference to Figure 13 a, Figure 13 b.On of the present invention pair of zero-bit chi body, a driving stem 226 is fixedly mounted with rear secondary chi 220, and secondary chi 220 is synchronous static or mobile subsequently; Coulisse 214 is fixedly mounted with front secondary chi 210, vernier cylinder 215 can be in the chute of coulisse 214 being free to slide of standard; Between driving stem 226 and vernier cylinder 215, there is a straight-line displacement amplifier 216 to be packed on coulisse 214.The displacement amplification quantity K of straight-line displacement amplifier 216 can choose as required, and preferred displacement amplification quantity is K=10.Driving stem 226 is by the amount of movement input straight-line displacement amplifier 216 of rear secondary chi 220, after straight-line displacement amplifier 216 amplifies this amount of movement, then export to 215 receptions of vernier cylinder, that is to say, when rear secondary chi 220 has moved 0.01 millimeter, vernier cylinder 215 can move 0.1 millimeter in the same way.One row is engraved on the inclined-plane of coulisse 214 apart from the little groove 217 that is 1 millimeter between two, one section of vernier line 218 is engraved on vernier cylinder 215 on the inclined-plane coplanar with little groove 217, the vernier line 218 that can move about forms coplanar no parallax vernier subdividing device jointly with relatively-stationary little groove 217, and the relatively-movable maximal value of this vernier subdividing device is slightly larger than 10 δ.Vernier line 218 on vernier cylinder 215 is by 0.1 millimeter of setting of display precision (9 millimeters that are about to little groove 217 are divided into 10 equal portions), because it is to have amplified the accuracy value of 10 times, thereby this accuracy value dwindle 10 times real be afterwards 0.01 millimeter, though so vernier line 218 is pressed 0.1 millimeter of setting of precision, the precision indicating is 0.01 millimeter of every lattice.The arrangement total length of little groove 217 adds 1 millimeter by 2 millimeters of the effective amount of movements of maximum of the relatively front secondary chi 210 of rear secondary chi 220 and then takes advantage of 10 times of settings, and it is divided into A, two sections of application of B:

With reference to Figure 13 c, when being applied to t=T, because the amount of movement T of rear secondary chi 220 is 1 millimeter to the maximum, now, if t=T=0.99 millimeter, after amplifying 10 times, be 9.9 millimeters, when, secondary chi 220 has moved 0.99 millimeter, vernier cylinder 215 will move 9.9 millimeters, on the vernier subdividing device of vernier line 218 and little groove 217 compositions, the numerical value of reading is 0.99, conforms to actual.What be now applied to is the A section shown in Figure 13 c.

With reference to Figure 13 d, when being applied to t=T-1, because the amount of movement T of described rear secondary chi 200 is 2 millimeters to the maximum, now, if t=0.99 millimeter, T=t+1=1.99 millimeter, is 19.9 millimeters after amplifying 10 times, after secondary chi 220 while having moved 1.99 millimeters, vernier cylinder 215 will move 19.9 millimeters, on the vernier subdividing device of vernier line 218 and little groove 217 compositions, the numerical value of reading is 0.99, conforms to actual.What be now applied to is the B section shown in Figure 13 d.

With reference to Figure 13 e, one end of extension spring 219 and vernier cylinder 215 be in inner hooking (not shown), the other end and straight-line displacement amplifier 216 hookings, and vernier cylinder 215 is at output terminal 216a butt inner and straight-line displacement amplifier 216.When the output terminal of straight-line displacement amplifier 216 stretches out along diagram left end direction, vernier cylinder 215 displacement in the same way, extension spring 219 is elongated; When ordering about after power that output terminal 216a stretches out disappears, the recuperability of extension spring 219 is ordered about the reverse displacement of vernier cylinder 215 and is resetted and make zero, and output terminal 216a is also because being supported by vernier cylinder 215 simultaneously along the reset of diagram right-hand member direction retraction.

By the job step of described pair of zero-bit chi body, can complete the measurement operation of described pair of zero-bit vernier caliper.The number reading method of described pair of zero-bit vernier caliper and conventional known vernier caliper are as broad as long, and gauger is A section or B section without what note application, only need to press line reading.

Of the present invention pair of zero-bit vernier caliper has following technique effect:

1. display precision can up to or higher than (when the K > 10) 0.01 millimeter.2. because vernier subdividing device is pressed 0.1 millimeter of setting of display precision, therefore groove is rare, only have 11 vernier lines, be therefore very easy to distinguish and read, than traditional vernier caliper of 0.02 millimeter of display precision, also easily distinguish and read 0.1 ÷ 0.02=5 doubly.3. it is easily laborsaving that dynamometry is constant, separation, strength self-locking, release are read in survey.

Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, its framework form can be flexible and changeable, can subseries product.Just make some simple deduction or replace, all should be considered as belonging to the definite scope of patent protection of claims that the present invention submits to.

Claims

1. two zero-bit electronic watch slide calliper rule, comprise two zero-bit chi bodies and micrometer mechanism; Described pair of zero-bit chi body comprises main scale and secondary chi; Described micrometer mechanism is angular displacement electronic sensor; Described main scale has quiet measuring jaw and main scale chi body, and it is the integer groove of the integral multiple of 1 millimeter that described main scale chi body is marked with distance between two, apart from the nearest initial integer groove of quiet measuring jaw, is original zero-bit; Described secondary chi contains described main scale chi body can be relative to the self-locking of described main scale chi body motionless or move along the orientation of described integer groove; It is characterized in that:

Described angular displacement sensor has the gear set two being fixedly mounted with front secondary chi, and the output terminal of described gear set two is a turning axle two; Described gear set two and described short tooth bar two tight mesh in the inner space of described front secondary chi, the maximal value of engageable stroke is δ ＇; Described angular displacement sensor also has the waterproof sealing box two being fixedly mounted with described front secondary chi, and described turning axle two passes through and enters in described waterproof sealing box two, and there is waterproof sealing bearing two at the place of passing through; In described waterproof sealing box two, circuit board two is housed, described turning axle two is fixedly mounted with a circular moving grid sheet in described waterproof sealing box two, and described circular moving grid sheet can synchronously rotate with described turning axle two; Described circular moving grid sheet and the coupling of described circuit board two-way oversampling circuit, by detecting described circular moving grid sheet, relative to the angle position of described circuit board two and described circular moving grid sheet, move the rotating cycle producing because of described short tooth bar two, and measure and the straight-line displacement distance that shows that the relative described front secondary chi of described rear secondary chi occurs, the maximal value of this straight-line displacement distance is δ ＇; Described waterproof sealing box two surfaces are provided with electronic display two, and described electronic display two is electrically connected to described circuit board two, and the integer-bit showing on it o'clock is solidified as 0 in δ=2.