CN101173845B

CN101173845B - Long ruler

Info

Publication number: CN101173845B
Application number: CN200610154503XA
Authority: CN
Inventors: 黄忠华
Original assignee: CHANGCHENG JINGGONG INDUSTRY Co Ltd NINGBO
Current assignee: CHANGCHENG JINGGONG INDUSTRY Co Ltd NINGBO
Priority date: 2006-10-31
Filing date: 2006-10-31
Publication date: 2010-11-17
Anticipated expiration: 2026-10-31
Also published as: CN101173845A

Abstract

The invention relates to a long ruler, comprising a casing, a ruler core disk, a ruler spring, a ruler belt, a braking device, a middle dividing mounting plate and a driving device, which is characterized in that: the ruler core disk, the ruler spring and the ruler belt are arranged in the casing; the ruler core disk can rotate; the ruler belt is wound on the ruler core disk; one end of the ruler belt extends out of the casing; the ruler spring is connected with the ruler core disk through the driving device; the braking device is arranged between the button of the casing and the ruler core disk; the casing cavity is divided into a left arranging cavity and a right arranging cavity through the middle dividing mounting plate, wherein the ruler spring is arranged in one arranging cavity and the ruler core disk arranged in the other; one end of the driving device is connected with one end of the ruler spring and the other end is connected with the ruler core disk. The invention has the advantages of simple and reasonable structure, convenience for handheld usage, easy assembly and production, suitable for popularizing and applying in long ruler.

Description

A kind of long chi

Technical field

The present invention relates to long chi such as tape measure or tape measure in a kind of measuring tool.

Background technology

Visible on the market at present ordinary tape measure is roughly two kinds, reclaim the chi band by spring force, spring and chi core are contained on the same axle center, pull out chi band rear spring and shrink focused energy, openhanded opening behind the chi band reclaimed the chi band by elastic force, but the chi band of this tape measure generally is no more than 10M.Because the chi band is long, in case exceed 10M, be wound on the chi core, can cause the tape measure volume ratio bigger, be not easy to hold use, if and the elasticity strength of spring is excessive, cause chi band incised wound staff easily, elasticity is not enough, then cause easily the chi band glibly backrush on the chi core, so, require further improvement; Another kind is that armrest shakes rotation chi core and drives the chi band on the chi core, thereby reclaims the chi band, and the chi band of this chi generally all more than 10M, is called long chi, and its defective is to need to use the hand chi of rolling back and forth, and it is not very convenient using.Because technical reason, it is to realize so far that long chi reclaims automatically, if can realize that long chi reclaims automatically, will make things convenient for consumer's use greatly.

Summary of the invention

Primary technical matters to be solved by this invention provide a kind of simple and reasonable, be convenient to hold use, the long chi produced of assembling easily.

Another technical matters to be solved by this invention provides a kind of suitable gear structure, assembling easily, the compact practical long chi that can reclaim automatically of driving mechanism.

Another technical matters to be solved by this invention provides a kind of arrestment mechanism advantages of simple, assembling easily, locking long chi reliably.

The present invention solves the technical scheme that above-mentioned primary technical matters adopts: a kind of long chi, it includes housing, be installed in rotatable chi core dish in the housing, the chi spring, the chi band, the chi tape wrapping is on chi core dish, one end of chi band stretches out outside the housing, the chi spring is to drive by driving mechanism and chi core dish and is connected, be provided with arrestment mechanism between the button of housing and the chi core dish, with it is characterized in that described housing and cut apart installing plate by the centre cavity of housing is divided into a left side, the right cavity of installing, wherein the chi spring is distributed in the installation cavity, chi core dish is distributed in another and installs in the cavity, one end of driving mechanism is connected with an end of chi spring, and the other end of driving mechanism is connected with chi core dish.

The present invention solves the technical scheme that above-mentioned another technical matters adopts: on above-mentioned technical foundation, described driving mechanism has comprised the internal tooth wheel disc, transition gear and the gear that is fixed on chi core dish side, central shaft is set on the housing, the internal tooth wheel disc is enclosed within on the central shaft, and be distributed in the installation cavity of chi spring, the side of internal tooth wheel disc is connected with an end of chi spring, in the middle of being arranged on, the step-shaped transition gear cuts apart on the installing plate side, and in the installation cavity of chi spring, first gear of transition gear and the internal tooth of internal tooth wheel disc are connected with a joggle, second gear of transition gear is connected with a joggle with the gear that extend in the chi spring installation cavity, and gear is installed on the central shaft in company with chi core dish.

The present invention solves the technical scheme that above-mentioned another technical matters adopts: on above-mentioned technical foundation, described arrestment mechanism is to be rotatably connected to ratchet with pawl axis on cutting apart the circumference of installing plate in the centre, between pawl axis and the housing torsion spring is installed, ratchet cooperates with the ratchet that annular distributes that is on being molded over chi core dish, and the other end of ratchet is conflicted with the button inboard face in being installed in the housing button hole and cooperated.

As improvement, described button is to adopt bearing pin to be installed in rotation in the housing button hole, and between bearing pin and ratchet the position, inboard face of button and centre are cut apart between the installing plate sidewall and are supported with spring, be convenient to button like this and install and use, and flexible movements.

As improvement, the sidewall that installing plate is cut apart in described centre constitutes middle shell, with the front and back housing involutory after, connect to form housing with screw, be convenient to the assembling production between the housing like this.

As improvement, described chi core dish is divided into chi core disc main body and metallic ratchet dish, ratchet is distributed on the metallic ratchet dish periphery, mold gear on the installation shaft outer end periphery of chi core disc main body, the metallic ratchet dish is enclosed within on the installation shaft of chi core disc main body, with screw metallic ratchet dish and chi core disc main body is assembled, and has constituted chi core dish, can improve the serviceable life of ratchet dish so greatly, can not wear and tear easily.

At last, described chi spring one end is to be plugged in the slot of the inboard face holder of chi shell, and the other end is to be plugged in the slot of internal tooth wheel disc side, is convenient to the assembling of chi spring like this and uses.

Compared with prior art, the invention has the advantages that: adopt chi spring and chi core dish to separate the structure of design side by side, simple and reasonable, be fit to the chi band of long chi more, dwindle the diameter of chi shell greatly, be convenient to hold use, and also assembling is produced easily, adopts compact practical driving mechanism, both convenient ruler was taken back receipts, simultaneously can reduce recovery speed, avoid the incised wound finger, and adopt internal tooth wheel disc and transition gear fit structure, cutting apart installing plate with the centre adapts, both make things convenient for transition gear to install and use, and simultaneously, can significantly reduce the wearing and tearing that the engagement of transition gear and internal tooth wheel disc causes, make transition gear and internal tooth wheel disc can adopt plastics to make, reduced cost, prolonged serviceable life, and assembling is produced very convenient, compact conformation is reasonable, cut apart installing plate in the middle of utilizing the pawl type arrestment mechanism is installed, simple and reasonable, assembling easily, lock reliable again, very practical.

Description of drawings

Fig. 1 is an automatically recovery long ruler cut-open view of the present invention;

Fig. 2 is an automatically recovery long ruler master apparent direction cut-open view of the present invention;

Fig. 3 is an automatically recovery long ruler chi spring fixed structure chart of the present invention;

Fig. 4 is the A-A sectional view of Fig. 3

Fig. 5 is the ratchet structure figure of automatically recovery long ruler of the present invention;

Fig. 6 is an automatically recovery long ruler diagram of gears of the present invention;

Fig. 7 is the B-B sectional view of Fig. 6;

Fig. 8 is an automatically recovery long ruler three-dimensional exploded view of the present invention.

Embodiment

Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.

Anticipate as shown in the figure, accompanying drawing number is: preceding chi shell 1, chi spring 2, internal tooth wheel disc 3, centre are cut apart installing plate 4 promptly middle chi shells, chi band 5, chi core metal ratchet dish 6, chi core disc main body 7, central shaft 8, transition gear 9, button 10, button bearing pin 11, button spring 12, ratchet 13, pawl axis 14, torsion spring 15, back chi shell 16, slot 17, slot 18, chi core dish 19, housing 20, arrestment mechanism 21, cavity 22 is installed on a left side, the right cavity 23 of installing, driving mechanism 24, gear 25, first gear 26 of transition gear, second gear 27 of transition gear, button mounting hole 28, ratchet 29.

A kind of automatically recovery long ruler, it includes housing 20, be installed in rotatable chi core dish 19 in the housing, chi spring 2, chi band 5 critical pieces such as grade, chi band 5 is wound on the chi core dish 19, one end of chi band 5 stretches out outside the housing 20, chi spring 2 is to drive by driving mechanism 24 and chi core dish 19 and is connected, be provided with arrestment mechanism 21 between button 10 on the housing and the chi core dish 19, formed long chi like this, see Fig. 1,8, these are consistent with traditional long chi structure basically, here no longer in depth describe on the details, the crucial part of its invention is that housing 20 cuts apart installing plate 4 by the centre cavity of housing is divided into a left side, the right cavity 22 of installing, 23, left and right sides cavity does not need to be cut apart installing plate by the centre and keeps apart utterly, and they are communicated with.In present embodiment, housing 20 has adopted preceding chi shell 1 and back chi shell 16, and the centre cut apart the sidewall of installing plate 4 as middle shell, cut apart installing plate 4 and front and back housing 1 like this, 16 involutory after, connect with screw, formed housing 20, wherein central shaft 8 is cut apart installing plate 4 in the middle of crossing, and two ends are fastened on the centre of procapsid 1 and back casing 16.The chi spring 2 of long chi is distributed in one and installs in the cavity 22, chi core dish 19 is distributed in another by central shaft 8 and installs in the cavity 23, because chi band 5 and chi spring 2 are separately positioned in two chambers arranged side by side, rather than be wound on the inside chamber and the outside of chi core dish, so, can reduce the diameter of chi core dish greatly, also just dwindle the housing diameter of long chi, be convenient to people and hold use.Rotate for the action that makes the chi spring can drive chi core disc spins, so a driving mechanism 24 must be arranged, an end of driving mechanism 24 is connected with an end of chi spring 2, and the other end of driving mechanism 24 is connected with chi core dish 19, sees Fig. 1,7.

In present embodiment, driving mechanism 24 has adopted compact simple driving mechanism, see Fig. 1, it has comprised internal tooth wheel disc 3, transition gear 9 and the gear 25 that is fixed on chi core dish side, central shaft 8 is set on the housing 20, internal tooth wheel disc 3 is distributed in the installation cavity 22 of chi spring, and be enclosed within on the central shaft 8 and can rotate rotation, internal tooth wheel disc 3 forms annular internal tooth, the side of internal tooth wheel disc 3 has slot 17, it is fixedly connected that discoid chi spring 2 one ends are inserted in the slot 17, as drive end, chi spring 2 other ends just be plugged on fix in the slot 18 of the inboard face holder of chi shell motionless, step-shaped transition gear 9 is cut apart installing plate 4 sides in the middle of being arranged on rotationally by pivot pin, and in the installation cavity 22 of chi spring, first gear 26 of transition gear is connected with a joggle with the internal tooth of internal tooth wheel disc 3, second gear 27 of transition gear is connected with a joggle with the gear 25 that extend in the chi spring installation cavity, and gear 25 is installed on the central shaft 8 in company with chi core dish 19.Like this, when going out the chi band, chi core disc spins just can be passed through driving mechanism, the chi spring is tightened up carry out storage power, and the chi spring just can drive chi core dish to reverse when scattering owing to elastic reaction, and the chi band is recovered on the chi core dish automatically.

In present embodiment, cut apart in the middle of arrestment mechanism 21 has adopted and has been fit to be installed on the installing plate arrestment mechanism, see Fig. 2, it is to cut apart on the circumference of installing plate 4 in the centre, normally in button mounting hole 28 positions, connects ratchet 13 rotationally with pawl axis 14, ratchet 13 is made of one structure with pawl axis 14, be convenient to install and use, be with torsion spring 15 on the pawl axis 14, cut apart in installing plate 4 sidewalls in the middle of an end of torsion spring 15 is supported on.And chi core dish 19 is divided into chi core disc main body 7 and chi core metal ratchet dish 6, ratchet 29 is distributed on metallic ratchet dish 6 peripheries, it utilizes metal stamping technology directly to go out metallic ratchet 29 on rosette, chi core disc main body 7 adopts plastics to make, utilize plastics molding process, make on the installation shaft outer end periphery of chi core disc main body 7 and mold gear 25, metallic ratchet dish 6 is enclosed within on the installation shaft of chi core disc main body 7 then, with screw metallic ratchet dish 6 and chi core disc main body 7 are assembled, constituted chi core dish 19, chi core dish 19 twines goes up chi band 5.Button 10 is to adopt bearing pin 11 to be installed in rotation in the housing button hole 28, and between bearing pin 11 and ratchet 13 position, button 10 inboard faces and centre are cut apart between installing plate 4 sidewalls and are supported with button spring 12.Like this, ratchet 13 just with chi core dish on the ratchet 29 that annular distributes of being conflict and cooperate, the other end of ratchet 13 is conflicted with button 10 inboard faces and is cooperated.In case ratchet is conflicted on the ratchet on the chi core dish, just can lock chi core dish, makes its braking, prevents that the chi band from reclaiming automatically, broken away from ratchet on the chi core dish and work as ratchet, just removed the locking of chi core dish, chi core dish can be reversed, automatically reclaim the chi band.

Long chi use of the present invention and principle of work are such: when the chi band 5 of long chi is pulled out, because the ratchet 13 in the arrestment mechanism under the effect of torsion spring 15 is being ratchet 29 back sides of conflict on chi core dish, so chi core dish 19 can rotate, and 19 rotations of chi core dish drive transition gear 9 rotations by 25 engagements of the gear on it, and transition gear 9 rotations drive the 3 rotation rotations of annular wheel dish, make chi spring 2 tighten up storage power, moving to until chi band 5 needs length to stop, because ratchet 13 is conflicted at ratchet 29 back sides, so chi core dish 19 can not reverse, locked chi core dish 19, people can freedom measure easily like this, press the button 10 and work as people with hand, make ratchet 13 overcome the elastic reaction of torsion spring 15, ratchet 29 back sides on the chi core dish have been broken away from, so chi core dish 19 can reverse rotation, chi spring 2 scatters under elastic reaction, make internal tooth wheel disc 3 backward rotation by drive end, by transition gear 9, driven gear 25 backward rotation, thereby make 19 reverse rotations of chi core dish, chi band 5 is recovered on the chi core dish 19, until people's release button 10, button 10 is upspring under the effect of button spring 12, ratchet 13 in the arrestment mechanism is at ratchet 29 back sides of conflicting once more under the effect of torsion spring 15 on chi core dish, make the chi core dish 19 cannot reverse rotation, or chi band 5 all is recovered on the chi core dish 19, and the chi fastener on the chi band 5 is lived chi shell outlet and gone up to extremely.

Claims

1. long chi, it includes housing (20), be installed in rotatable chi core dish (19) in the housing, chi spring (2), chi band (5), chi band (5) is wound on the chi core dish (19), one end of chi band (5) stretches out outside the housing (20), chi spring (2) is to drive by driving mechanism (24) and chi core dish (19) and is connected, be provided with arrestment mechanism (21) between button of housing (10) and the chi core dish (19), it is characterized in that described housing (20) cuts apart installing plate (4) by the centre cavity of housing is divided into a left side, the right cavity (22 of installing side by side, 23), the sidewall that installing plate (4) is cut apart in described centre constitutes middle shell, with front and back housing (1,16) after involutory, connect to form housing (20) with screw; Wherein chi spring (2) is distributed in the installation cavity, and chi core dish (19) is distributed in another and installs in cavity, and an end of driving mechanism (24) is connected with an end of chi spring (2), and the other end of driving mechanism (24) is connected with chi core dish (19).

2. long chi according to claim 1, it is characterized in that described driving mechanism (24) has comprised internal tooth wheel disc (3), transition gear (9) and be fixed on the gear (25) of chi core dish side, central shaft (8) is set on the housing (20), internal tooth wheel disc (3) is enclosed within on the central shaft (8), and be distributed in the installation cavity of chi spring, the side of internal tooth wheel disc (3) is connected with an end of chi spring (2), in the middle of being arranged on, step-shaped transition gear (9) cuts apart on installing plate (4) side, and in the installation cavity of chi spring, first gear (26) of transition gear is connected with a joggle with the internal tooth of internal tooth wheel disc (3), second gear (27) of transition gear is connected with a joggle with the gear (25) that is fixed on chi core dish side that extend in the chi spring installation cavity, and the gear (25) that is fixed on chi core dish side is installed on the central shaft (8) in company with chi core dish.