CN2615632Y

CN2615632Y - Three braking flexible rule

Info

Publication number: CN2615632Y
Application number: CN 03245274
Authority: CN
Inventors: 王胜喜
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-04-16
Filing date: 2003-04-16
Publication date: 2004-05-12
Anticipated expiration: 2013-04-16

Abstract

A band tape with three groups of brakes, wherein the arresting device comprises a brake switch made of a switch and a retaining piece, a left button and a right stop button, totally three groups of brakes. The switch is a conjoined structure comprising a push button, a slide plate, a dialing block and a handle. The width of the handle is less than the width of a chute formed between the push button and the slide plate. An arcuate groove is equipped in the middle portion of the dialing block. The cambered surface of one side of the arcuate groove forms a hook-shaped segment with the arcuate outer wall of the dialing block. A round shaft is equipped on the tail end of the retaining piece. A through hole is equipped in the middle portion of the retaining piece. And the through hole corresponds to the hook-shaped segment of the dialing block, wherein two resisting claws are equipped on the front portion. The round shaft is arranged in the arcuate groove. Two guide rails are connected respectively with a left cover body and a right cover body. The two ends of the retaining piece are arranged in the guide rail and can slide in the guide rail. A plurality of punch holes are respectively equipped on the lateral surfaces of the left cover body and the right cover body. Two stop buttons made of a pressing head and a convex selvedge are arranged in one punch hole. The utility model has simple structure, compact bulk, a small number of spare parts, easy assembly, and reliable locking effect. And two stop buttons are located on proper portion, which is convenient to manipulate, achieves intermittency brake of band tape ruler belt, and the two stop buttons are equipped with a slip-preventing cover, so it has good hand feeling and is non-skidding during use.

Description

Three braking tape measures

Technical field

The utility model relates to survey instrument, particularly tape measure.

Background technology

Tape measure claims the box chi again, is a kind of survey instrument that the chi band can bounce back automatically under the elastic-restoring force effect of wind spring, and is easy to carry because of volume is little, is widely used.Early stage tape measure does not have brake switch, after stretching out, the chi band can not be locked in certain position, can only the chi band not bounced back armrest power, rest on a certain position, the tape measure that had occurred the band brake switch afterwards, press switch after the chi band of tape measure stretches out and just can make the locking of chi band sponson, after switch discharges, the chi band will be automatically whole fast retractiles, but the chi band of this tape measure can not the slow-action retraction or suspends in a certain position, occurred the tape measure of band brake button afterwards again, after the chi band is pulled out, the user can arbitrarily suspend in a certain position the chi band by the braking knob by finger in removal process, in the prior art structure of brake switch and locking key have multiple, the complex structure that has, the braking effect that has is bad, the inconvenient operation that has, prior art has improvement, perfect necessity increases new tape measure kind.

Summary of the invention

The purpose of this utility model provides a kind of three braking tape measures that have a brake switch, two locking keys, and it is simple in structure, can brake good braking effect, the convenient use in arbitrary position.

The purpose of this utility model is achieved in that

A kind of three braking tape measures, it has by left and right lid and fastens the chi box that constitutes, and the chi band on the rolling wheel is housed in the chi box, the inner torsion spring that connects on the rolling wheel of chi band, the outer end is stretched out by the opening of chi box, and chi is box-packed clamping device;

Clamping device comprises the brake switch of being made up of switch and brake(-holder) block, and left and right locking key;

Switch is the conjoined structure that push button, slide plate, shifting block and handle are arranged, and push button is connected with the outside of slide plate by handle, and the width of handle is less than described push button and slide plate and form two-sided chute betwixt, and shifting block is positioned at the slide plate inboard, and there is the opening arc groove at the middle part of shifting block; The cambered surface of this arc groove and the arc outer wall of shifting block constitute crook; Left and right lid joint at chi box front side wall has notch, and the handle cunning of brake switch is contained on this notch, and push button is posted by the outer wall of chi box, and slide plate is posted by the inwall of chi box; The tail end of brake(-holder) block has circular shaft, and the middle part has the crook of open-work and brake switch shifting block corresponding and can hold it and enter, and front end has two to support pawl; Circular shaft is loaded in the groove of this shifting block, be connected with the guide rail that constitutes by baffle plate at the left cover body inwall near chi box opening part, be connected with the guide rail that is made of baffle plate at the right cover body inwall corresponding with the guide rail of left cover body, and the two sides of brake(-holder) block are stretched into respectively in the guide rail, and this guide rail points to the chi band;

Each is made of locking key head and chimb, head of this two brakings button is contained in respectively in the perforation on the left and right lid side, this perforation aligns the both sides of the edge of the rolling wheel in the chi box respectively, described head is exposed to the perforation of left and right lid, and its chimb is between the interior base and rolling wheel side of perforation.

Backing plate is equipped with near the exit in described chi box bottom surface, and the upper surface of this backing plate has the indent conical surface, and the cambered surface of this conical surface and chi band is corresponding, and this backing plate front end has the positioning step of downward protrusion, and there is the wing plate that is used to locate that stretches out backward both sides.

The appearance of described chi box is coated with whole anti-sliding sleeve, and outlet, notch, perforation corresponding section on this anti-sliding sleeve and the described chi box are uncovered, and anti-skidding concavo-convex impression is arranged on the outside surface of this anti-sliding sleeve.

The head of described locking key is oval-shaped hollow shell, and its chimb is rectangle or ellipse.

Described left and right lid, the material of switch, brake(-holder) block are plastics, and the material of described anti-sliding sleeve is rubber or flexible plastic.

The utility model has following actively useful effect:

This tape measure is simple in structure, volume compact, and part is few, and assembly is easy.It has a brake switch, and this brake switch combines with brake(-holder) block, and brake operating is easy, and locking effect is reliable.It has two locking keys, be contained in the both sides of chi box respectively, the position is reasonable, when the user holds the chi box, the thumb that is positioned at chi box one side all can be operated locking key with other finger that is positioned at opposite side, easy to operate, as long as one put one of them locking key by one, just can realize that the intermittence of band tape is braked.This tape measure is furnished with anti-sliding sleeve, and good hand touch is difficult for during use skidding.

Description of drawings

Fig. 1 is the structural representation of facing of the utility model one embodiment;

Fig. 2 is the left view of Fig. 1;

Fig. 3 is the right view of Fig. 1;

Fig. 4 is the utility model inner structure synoptic diagram; Show that brake switch is positioned at not on-position;

The same Fig. 4 of Fig. 5 shows that brake switch is positioned at on-position;

Fig. 6 is the A-A partial sectional view of Fig. 4, shows the brake switch structure;

Fig. 7 shows the guide rail structure of left cover body;

Fig. 8 shows the guide rail structure of right cover body;

Fig. 9 is the oblique view of switch;

Figure 10 is the side view of Fig. 9;

Figure 11 is the structural representation of brake(-holder) block;

Figure 12 is the oblique view of backing plate;

Figure 13 is the structural representation (biopsy cavity marker devices) of button one embodiment.

Embodiment

Accompanying drawing number:

1. chi box 101. openings

2. chi band

3. left cover body 301. baffle plates 302. baffle plates

303. guide rail 304. screw hole columns 305. perforation

4. right cover body 401. baffle plates 402. baffle plates

403. guide rail 404. screw hole columns 405. perforation

5. rolling wheel 6. mandrels

7. backing plate 701. inclined-planes 702. positioning steps, 703. wing plates

8. switch

801. push button 802. slide plates 803. shifting blocks

804. handle 805. arc grooves 806. crook

9. brake(-holder) block

901. circular shaft 902. open-works 903. support pawl

904. support 906. inclined-planes, pawl 905. inclined-planes

10. notch

11. locking key 111. heads 112. chimbs

12. locking key

13. anti-sliding sleeve 131. impressions

14. screw 15. is not buckled 16. annular grooves

Please refer to Fig. 1, Fig. 2, Fig. 3, the utility model is a kind of three braking tape measures, and it has by left and

right lid

3,4 and fastens the chi box 1 that constitutes, and the chi band 2 on the rolling wheel 5 is housed in the chi box 1, the chi band 2 inner torsion springs (accompanying drawing does not show torsion spring) that connect on the rolling wheel, the outer end is stretched out by the opening of chi box; Chi box 1 is equipped with clamping device.

Described clamping device comprises the brake switch of being made up of switch 8 and brake(-holder) block 9, and the totally three groups of brakings of left and right locking

key

11,12;

Please refer to Fig. 4, Fig. 5, Fig. 6, Fig. 9, Figure 10, switch 8 is for there being the conjoined structure of push button 801, slide plate 802, shifting block 803 and handle 804, push button 801 is connected with the outside of slide plate 802 by handle 804, the width of handle 804 is less than described push button 801 and slide plate 802 and form two-sided chute betwixt, shifting block 803 is positioned at slide plate 802 inboards, and there is opening arc groove 805 at the middle part of shifting block 803; The cambered surface of this arc groove 805 and the arc outer wall of shifting block 803 constitute crook 806; Left and right lid 3,4 joints at chi box 1 front side wall have notch 10, handle 804 sliding being contained on this notch 10 of brake switch 8, and push button 801 is posted by the outer wall of chi box 1, and slide plate 802 is posted by the inwall of chi box 1; Please refer to Figure 11, the tail end of brake(-holder) block 9 has circular shaft 901, and the middle part has the crook 806 of open-work 902 and brake switch shifting block 803 corresponding and can hold it and enter, and front end has two to support pawl 903,904; Circular shaft 901 is loaded in the groove 805 of this shifting block; Please refer to Fig. 7, Fig. 8, be connected with the guide rail 303 that constitutes by baffle plate 301,302 at left cover body 3 inwalls near chi box 1 opening 101 places, be connected with the guide rail 403 that constitutes by baffle plate 401,402 at right cover body 4 inwalls, this guide rail 403 is corresponding with the guide rail 303 of left cover body 3, and the two sides of brake(-holder) block 9 are stretched into respectively in the guide rail 303,403; This guide rail 303,403 points to chi band 2;

Please refer to Fig. 4, switch 8 with the continuous action relation of brake(-holder) block 9 is: push to the push button 801 of switch 8, the arc groove 805 in the crook of shifting block 803 hooks the circular shaft 901 of brake(-holder) block 9, drives two and supports the chi face that pawl 903,904 leaves chi band 1, the chi band loses braking, can freely stretch.Please refer to Fig. 5, press the push button 801 of switch 8, the crook 806 of shifting block 803 promotes brake(-holder) block 9 downwards, and these two are supported the braking that pawl 903,904 moves down the chi face realization chi band 1 of contact chi band 1.

Please refer to Fig. 2, Fig. 3, Figure 13, locking

key

11,12 respectively is made of head 111 and chimb 112, head 111 of this two brakings button is contained in respectively in the perforation 305,405 (seeing Fig. 7, Fig. 8) on the left and right lid side, this perforation aligns the both sides of the edge of the rolling wheel 6 in the chi box respectively, described head 111 is exposed to the perforation 305,405 of left and right lid, and its chimb 112 is between the interior base and rolling wheel side of perforation.

When the head 111 of locking key 11 is pressed, its chimb 112 contacts with the left surface of rolling wheel 5, make the slight deflection of rolling wheel 5, the axial offset of the center line of rolling wheel 5 and mandrel 6, thereby limited the rotation of rolling wheel 5, realized temporary transient braking, during the head 111 of take-off the brake button 11, rolling wheel 5 slight deflection under the elastic force of torsion spring resets, and the temporary transient braking of chi band 1 is disengaged.The working condition of locking key 12 is identical therewith.

Please refer to Fig. 6, Figure 12, backing plate 7 is equipped with near outlet 101 places in described chi box 1 bottom surface, and the upper surface of this backing plate has the indent conical surface 701, and the cambered surface of this conical surface and chi band 2 is corresponding, this backing plate front end has the positioning step 702 of downward protrusion, and there is the wing plate that is used to locate 703 that stretches out backward both sides.

Please refer to Fig. 1, Fig. 2, Fig. 3, the appearance of described chi box 1 is coated with whole anti-sliding sleeve 13, should prevent that sliding sleeve 13 is uncovered with outlet 101, notch 10, perforation 305,405 corresponding sections on the described chi box 1, was shaped on anti-skidding concavo-convex impression 131 on the outside surface of this anti-sliding sleeve 13.

The head 111 of described locking key 11,12 is oval-shaped hollow shell (seeing Figure 13), and its chimb 112 is rectangle or ellipse.

During enforcement, described left and

right lid

3,4, the material of switch 8, brake(-holder) block 9 is plastics, the material of described anti-sliding sleeve 13 is rubber or flexible plastic.

Please refer to Fig. 1, Fig. 3, the outside of anti-sliding sleeve 13 is equipped with and is not detained 15, does not detain 15 and is fixed on the box body 1 by screw 14.

Please refer to Fig. 4, Fig. 5, Fig. 6, Fig. 7, at the tail end of left box body 3 and right box body 4 semicircular annular groove 16 is arranged, this annular groove 16 is used for installing and is linked with (accompanying drawing do not show be linked with).

Claims

1. brake tape measure for one kind three, it has the chi box (1) that is fastened formation by left and right lid (3), (4), chi band (2) on the rolling wheel (5) is housed in the chi box (1), the inner torsion spring that connects on the rolling wheel of chi band (2), the outer end is stretched out by the opening of chi box, chi box (1) is equipped with clamping device, it is characterized in that:

Clamping device comprises the brake switch of being made up of switch (8) and brake(-holder) block (9), reaches left and right locking key (11), (12);

Switch (8) is for there being the conjoined structure of push button (801), slide plate (802), shifting block (803) and handle (804), push button (801) is connected with the outside of slide plate (802) by handle (804), the width of handle (804) is less than described push button (801) and slide plate (802) and form two-sided chute betwixt, shifting block (803) is positioned at slide plate (802) inboard, and there is opening arc groove (805) at the middle part of shifting block (803); The cambered surface of this arc groove (805) and the arc outer wall of shifting block (803) constitute crook (806); Left and right lid (3), (4) joint at chi box (1) front side wall have notch (10), the handle (804) of brake switch (8) is sliding to be contained on this notch (10), push button (801) is posted by the outer wall of chi box (1), and slide plate (802) is posted by the inwall of chi box (1); The tail end of brake(-holder) block (9) has circular shaft (901), and the middle part has the crook (806) of open-work (902) and brake switch shifting block (803) corresponding and can hold it and enter, and front end has two to support pawl (903), (904); Circular shaft (901) is loaded in the groove (805) of this shifting block, open (101) at left cover body (3) inwall near chi box (1) and locate to be connected with the guide rail (303) that constitutes by baffle plate (301), (302), it is corresponding with the guide rail (303) of left cover body (3) to be connected with the guide rail (403) that is made of baffle plate (401), (402) at right cover body (4) inwall, the two sides of brake(-holder) block (9) are stretched into respectively in guide rail (303), (403), and chi band (2) is pointed in this guide rail (303), (403);

Locking key (11), (12) respectively are made of head (111) and chimb (112), head (111) of this two brakings button is contained in respectively in perforation (305) on the left and right lid side, (405), this perforation aligns the both sides of the edge of the rolling wheel (6) in the chi box respectively, described head (111) is exposed to perforation (305), (405) of left and right lid, and its chimb (112) is between the interior base and rolling wheel side of perforation.

2. three braking tape measures as claimed in claim 1, it is characterized in that: backing plate (7) is located to be equipped with near outlet (101) in described chi box (1) bottom surface, the upper surface of this backing plate has the indent conical surface (701), the cambered surface of this conical surface and chi band (2) is corresponding, this backing plate front end has the positioning step (702) of downward protrusion, and there is the wing plate that is used to locate (703) that stretches out backward both sides.

3. three braking tape measures as claimed in claim 1, it is characterized in that: the appearance of described chi box (1) is coated with whole anti-sliding sleeve (13), should prevent that sliding sleeve (13) is uncovered with outlet (101), notch (10), perforation (305), (405) corresponding section on the described chi box (1), had anti-skidding concavo-convex impression (131) on the outside surface of this anti-sliding sleeve (13).

4. three braking tape measures as claimed in claim 1, it is characterized in that: the head (111) of described locking key (11), (12) is oval-shaped hollow shell, and its chimb (112) is rectangle or ellipse.

5. three braking tape measures as claimed in claim 1 is characterized in that: described left and right lid (3), (4), and the material of switch (8), brake(-holder) block (9) is plastics, the material of described anti-sliding sleeve (13) is rubber or flexible plastic.