CN1869580A

CN1869580A - High protection mechanical rule with meter

Info

Publication number: CN1869580A
Application number: CNA2006100599155A
Authority: CN
Inventors: 吴大卫
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-02-27
Filing date: 2006-02-27
Publication date: 2006-11-29
Also published as: WO2007095840A1

Abstract

The invention relates to length measuring tool, concretely to high protective belt gage machinery rule which has invisible rack and can prevent outside matter dropping into inter-tooth space. Its feature is that the engaging piece is set in mobile protective space to keep it in protection sate all the ways. And the rack out of the protective space is always covered by one sheet band. The technique is simple and easy to realize, and subversive for tradition.

Description

High protection mechanical rule with meter

(1) technical field

The present invention relates to a kind of length measurer, be specially a kind of cannot see tooth bar, can prevent that extraneous foreign matter from falling into the high protection mechanical rule with meter of between cog.

(2) technical background

Modal band is shown mechanical chi two classes, and a class is a dial caliper, and another kind of is band table height gauge.They all are that engaged transmission by gear and tooth bar drives the pointer rotation of indicating gauge and the indication measurement value, because parallax is little, reading efficient height, be not afraid of profit and splash, be difficult for being subjected to ergometry to influence, thereby are used widely in manufacturing industry.But because tooth bar is outside open, foreign matters such as tiny iron filings and grinding sand grains fall between cog easily, between cog also forms greasy filth incrustation easily simultaneously, feasible band is shown mechanical chi and the phenomenon that has some setbacks often occurred spurring, more can not be applied to the occasion of dust from flying such as woodworking machinery, powder metallurgy, make its range of application, environment for use and operation require all to be restricted.

Show the ordinary construction and the existing defective thereof of mechanical chi below with reference to Fig. 1 and the present known band of Fig. 2 brief description.As shown in Figure 1, band is shown mechanical chi and is comprised main scale 102 that is fixed with tooth bar 101 and the secondary chi 104 that is fixed with gauge outfit 103, secondary chi 104 is sleeved on the main scale 102 and along main scale 102 and moves around, the gear (not shown) of gauge outfit 103 inside that installed on it and tooth bar 101 engagements, drive pointer 105 rotations to show the fractional value of measured value, the round values of measured value is read by the scale mark on the main scale 102.When band is shown mechanical chi and is in closure state, tooth bar 101 is covered by secondary chi 104 and the pit gauge bar 106 that is packed on the secondary chi 104, but when band is shown mechanical chi and is in measured operational state, secondary chi 104 is drawn back, originally just revealed by the tooth bar 101 of its covering, in case between cog has foreign matter to fall into or greasy filth incrustation, the phenomenon that has some setbacks will occur spurring, and these foreign matters or greasy filth often are difficult to cleaning.

Since carrying table mechanical chi emerging, breakthrough variation never occurs, up to now, found and found high protection mechanical rule with meter that cannot see tooth bar in the measurer field at home and abroad as yet.Tracing it to its cause, is because will realize in limited space that it is a recognized techniques difficult problem that the long-range of tooth bar dynamically covers.

(3) summary of the invention

Technical purpose of the present invention is: utilize succinct technological means, tooth bar realized that long-range dynamically covers, tooth bar is stashed, thereby provide a kind of cannot see tooth bar, can prevent that extraneous foreign matter from falling into the high protection mechanical rule with meter of between cog.

The technical scheme that realizes the technology of the present invention purpose is: set up a movably guard space; the engaging piece of wheel and rack is arranged in this movably in the guard space; and the containing that is subjected to this guard space is all the time protected; no matter where guard space moves to; tooth bar beyond the guard space is all covered by a strip of being close to its tooth top and does not manifest and expose, thereby makes extraneous foreign matter can't fall between cog.

Particular content of the present invention is: it comprises main scale and secondary chi, and secondary chi can move back and forth along main scale; Main scale comprises blade, tooth bar and a strip; Secondary chi comprises chi frame, supporter and gauge outfit; The wheel and rack of gauge outfit keeps engagement.Behind main scale and the secondary chi suit, strip passes the inside of secondary chi hollow, and its head and the tail two ends are packed in the two ends of blade length direction; Do not pass secondary chi and be exposed to the tooth top that outer strip keeps exceptionally straight state covering tooth bar, and can dynamically rise and fall along with moving of secondary chi; Be hidden in of the support of the strip of secondary chi hollow inside, form a guard space that leaves the tooth bar tooth top and contain the wheel and rack engaging piece by supporter.When secondary chi when main scale moves back and forth; secondary chi inside is also moved along the main scale continuous shifting that rises and falls synchronously along with moving of secondary chi by strip and the formed guard space of supporter; moving of the mobile wheel and rack engaging piece just of secondary chi; and this engaging piece is inclusive in strip and the formed guard space of supporter; so secondary chi is when main scale moves; the engaging piece of wheel and rack is protected the containing protection in space all the time; being exposed to the outside strip of support body supports that is subjected to of secondary chi then dynamically rises and falls along with moving of secondary chi; the strip that rose and fell is because length is immutable; the tooth top that exceptionally straight state covers tooth bar will be remained; so the whole piece tooth bar from first to last just all has been subjected to the dynamic covering protection of long-range of strip and can have kept engagement with gear; all foreign matters that come from the outside all are deposited on the strip; and can not fall between cog; thereby guaranteed that band shows mechanical chi and the phenomenon that has some setbacks can not occur spurring, can work in the occasion of dust from flying

Advantage of the present invention is: 1. show mechanical chi with the tradition band and compare, both structurally do not have essential difference, thereby kept fully that band shows that mechanical chi parallax is little, reading efficient height, be not afraid of profit and splash, be difficult for being subjected to that ergometry influences, simple in structure, the technical advantage that is easy to produce, for the consistent measurer enterprise that produces the mechanical chi of tradition band table, need not change technology pattern and just can change the line of production fast.2. show mechanical chi with the tradition band and compare, production cost is suitable, and protective capacities has but had breakthrough raising, because technological means is succinct, is easy to realize, thereby the tradition band is shown mechanical chi has subversiveness.

(4) description of drawings

Fig. 1 is the outside drawing of traditional dial caliper

Fig. 2 is the partial enlarged drawing of Fig. 1

Fig. 3 is the integrally-built front view (FV) of the embodiment of the invention

Fig. 4 is the integrally-built back view of the embodiment of the invention

Fig. 5 removes back view behind the chi frame 301 for the embodiment of the invention

Fig. 6 is the partial enlarged drawing of Fig. 5

Fig. 7 is the partial enlarged drawing of Fig. 6

(5) embodiment

A specific embodiment of the present invention such as Fig. 3～shown in Figure 7.Fig. 3 and shown in Figure 4 be the one-piece construction of present embodiment, it comprises main scale 200 and secondary chi 300, secondary chi 300 can move back and forth along main scale 200; Main scale 200 comprises blade 201, be packed in the joint strip 202 on the blade 201, tooth bar 203 is sandwiched between blade 201 and the joint strip 202, installs (be hidden, do not draw) simultaneously with blade 201 and joint strip 202, also be fixed with width on the blade 201 and equal or be slightly larger than the rectangular strip 204 of tooth bar 203 thickness, the strip 204 after installing keeps exceptionally straight state to cover the tooth top of tooth bar 203; Secondary chi 300 comprises chi frame 301, be packed in case 302 on the chi frame 301, be packed in the gauge outfit 303 on the case 302.As Fig. 5, Fig. 6 and shown in Figure 7, the gear 304 of gauge outfit 303 keeps engagement at the inside and the tooth bar 203 of case 302, also is provided with 4 supporters 305 in the inside of case 302 hollows.Behind main scale 200 and secondary chi 300 suits, strip 204 passes the inside of case 302 hollows, and its head and the tail two ends are packed in the two ends of blade 201 length directions; Do not pass case 302 and be exposed to the tooth top that outer strip 204 keeps exceptionally straight state covering tooth bar 203, and can dynamically rise and fall along with moving of case 302; Be hidden in of the support of the strip 204 of case 302 hollow inside, form a guard space 307 that leaves the tooth bar tooth top and contain wheel and rack engaging piece 306 by supporter 305.When secondary chi 300 when main scale 200 moves back and forth; guard space 307 also moves along main scale 200 synchronous fluctuating continuous shiftings along with moving of secondary chi 300; the mobile gear just 304 of secondary chi 300 and moving of tooth bar 203 engaging pieces 306; and engaging piece 306 is inclusive in 307 li of guard spaces; so secondary chi 300 is when main scale 200 moves; the engaging piece 306 of gear 304 and tooth bar 203 is protected the containing protection in space 307 all the time; being exposed to the case 302 outside strips 204 that not supported by supporter 305 then dynamically rises and falls along with moving of secondary chi 300; the strip 204 that rose and fell is because length is immutable; the tooth top that exceptionally straight state covers tooth bar 203 will be remained; so tooth bar 203 from first to last just all has been subjected to the dynamic covering protection of long-range of strip 204 and can have kept engagement with gear 304; all foreign matters that come from the outside all are deposited on the strip 204, and can not fall between cog.

More than carried out implementation of the present invention by embodiment, but the invention is not restricted to above embodiment, under the prerequisite that does not surmount characteristic range of the present invention, the present invention can have various differentiation.Various variations, modification and the application done according to the present invention all belong to scope of the present invention.

Claims

1. a high protection mechanical rule with meter is made up of main scale and secondary chi, it is characterized in that:

Described main scale comprises blade, tooth bar and strip;

Described secondary chi comprises chi frame, gauge outfit and supporter;

The head and the tail two ends of described strip are packed in the two ends of blade length direction;

Described strip forms the guard space that a part is left the tooth bar tooth top and contained the wheel and rack engaging piece by the support of supporter, and the engaging piece of wheel and rack is arranged in this guard space, and is subjected to the containing protection of this guard space all the time;

Described guard space moves along the main scale continuous shifting that rises and falls synchronously with moving of secondary chi;

Described strip it be not subjected to the part of support body supports to remain exceptionally straight state covering tooth bar tooth top.

2 high protection mechanical rule with meter according to claim 1 is characterized in that:

Comprise that engaged transmission by gear and tooth bar drives the pointer rotation of indicating gauge and all bands of indication measurement value are shown mechanical chi, as dial caliper and band table height gauge.