CN208765599U - Anti-cutting hand scroll ruler - Google Patents

Abstract

The utility model discloses a kind of anti-cutting hand scroll rulers, including ruler shell and tape, tape one end coiling is in ruler shell, ruler shell includes opening, tape includes ruler hook and ruler hooks end and is located at outside ruler shell, the opening is equipped with can be relative to the protection block of opening sliding, friction block and Elastic buckle are connected in the protection block, tape lower end surface is equipped with the deceleration block that can be slided relative to friction block, it is the convergent force generated that force of sliding friction between friction block and deceleration block, which is less than tape to shrink, ruler shell inner surface is equipped with the block button hole to match with Elastic buckle size, ruler shell inner surface is additionally provided with limited block.Its portability that can not destroy original tape measure of the utility model, and be not easy to cut the hand of user when shrinking, at the same it is more convenient hold, there is higher safety and practical.

Description

Anti-cutting hand scroll ruler

Technical field

The utility model relates to a kind of measuring tools, refer in particular to a kind of anti-cutting hand scroll ruler.

Background technique

When shrinking, due to excessive velocities and opening is easily contacted with hand existing tape measure, and tape is easy to make one to cut Hand and it is injured, and while using hold it is inconvenient, for example, one kind disclosed " lever type brake type " in Chinese patent literature, Its Publication No. " CN2573995 ", the locking switch of tape extension are improved to be hinged on the lever of upper and lower casing lower part Formula brake plate, the brake plate one end are equipped with the overhanging brake buckle of braking tape, and the other end is equipped with to act on brake plate and realize certainly The spring of dynamic braking.But it is easy to cut the hand of user when shrinking, and holds inconvenience, and safety and practicability are poor.

Utility model content

In order to solve above-mentioned existing tape measure when shrinking, due to tape excessive velocities and no safeguard measure, tape is held It easily makes one to cut in one's hands and injured and is not easy to the problem of holding, the utility model provides a kind of anti-cutting hand scroll ruler, can not The portability of original tape measure is destroyed, convenient for holding, and is not easy to cut the hand of user when shrinking, safety and practical higher.

The technical solution adopted in the utility model is: a kind of anti-cutting hand scroll ruler, including ruler shell and tape, the tape one Hold coiling in ruler shell, ruler shell includes opening, and tape includes ruler hook and ruler hooks end and is located at outside ruler shell, and the opening is equipped with Friction block and Elastic buckle can be connected with relative to the protection block of opening sliding, in the protection block, on tape lower end surface Equipped with the deceleration block that can be slided relative to friction block, the force of sliding friction between friction block and deceleration block, which is less than tape contraction, is The convergent force of generation, ruler shell inner surface are equipped with the block button hole to match with Elastic buckle size, and ruler shell inner surface is additionally provided with limited block. Tape is contracted in ruler shell by internal pretightning force, drives tape to be pulled out by opening when user pulls ruler to hook, at this point, due to Friction block and deceleration block, which are in contact, generates friction, as tape moves, drives protection block, protection block is made to stretch out ruler shell by opening, After the Elastic buckle being connected in protection block is moved to buckle hole site and inlay card enters block button hole, protection block is limited, and is stopped Only move, protection block stretches out ruler shell as extension at this time, using protection block can the tape edge to opening wrap It wraps up in, the index finger that hold the hand of ruler shell can be padded measures use below protective case, prevents from cutting hand.When the measurement is completed, ruler Tape is driven to bounce back in ruler shell with internal pretightning force, in tape retraction process, deceleration block is contacted with friction block generates frictional force, Tape speed reduces, so that tape be avoided to cause the exposed part outside ruler shell to crimp since retraction is too fast, prevents tape from returning Hand is cut in compression process.The pressure towards ruler shell internal direction can be applied to protection block when ruler hook joint contacts protection block, driven Protection block bounces back in ruler shell.Limited block can limit protection block far from one end that ruler hooks, and protection block is avoided excessively to recycle It falls in ruler shell, guarantees protection block always towards opening.The utility model is by mobilizable protection block, so that user makes Used time effectively can avoid finger from being hurt by tape, and the hand hole being also devised among ruler shell convenient for holding, more just Just it uses.

Preferably, the protection block is L shape, L shape protection block includes short side part and long side part, short leg Divide downward, is that a circular hole is arranged at hollow and bottom inside short side part, the Elastic buckle is located inside short side part.L shape The long side part of protection block is with short side part for both sides compare and set, and for distinguishing the different both sides of length, this design can Protection block is set to obtain limit after stretching out ruler shell to protect the hand of user.

Preferably, elastic slice and hoodle for doing extended or retracted movement that the Elastic buckle includes bending, Middle elastic slice is fixedly connected in protection block, and hoodle is located in circular hole in half elliptic.When tape is not drawn out, hoodle, which is in, to be received Contracting state, protection block collapse into inside ruler shell, and after pulling out tape, after Elastic buckle reaches buckle hole site, hoodle springs into buckle Simultaneously inlay card wherein, plays position-limiting action to protection block in hole.

Preferably, the width of the friction block and deceleration block is identical as blade width.This design can both make to protect Block can also can reduce tape speed when tape is shunk, further reach anti-cutting smoothly to stretch out ruler shell under the drive of tape The purpose of hand.

Preferably, the limited block and ruler shell are integrally formed, limited block is equal to the length of protection block at a distance from opening Degree.This design guarantee can limited block intensity, while but also protection block is not in that recycling is excessive during withdrawal Situation.

Preferably, the hand hole (11) held at the ruler shell center through setting one convenient for manpower.This design letter It is clean to be illustrated, but effectively raise the convenient degree of tape measure gripping.

Therefore, the anti-cutting hand scroll ruler of the utility model has following advantages: its portability that can not destroy original tape measure, And be not easy to cut the hand of user when shrinking, while it is more convenient hold, there is higher safety and practical.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the structural schematic diagram after the tape of the utility model stretches；

Fig. 3 is the protection block and Elastic buckle connection schematic diagram of the utility model.

Illustrate: 1- ruler shell, 2- tape, 3- ruler hook, 4- Elastic buckle, 5- protection block, 6- opening, 7- friction block, 8- Deceleration block, 9- block button hole, 10- limited block, 11- hand hole.

Specific embodiment

The following is further explained with reference to the attached drawings the utility model.

Such as Fig. 1, shown in 2,3, a kind of anti-cutting hand scroll ruler, including ruler shell 1 and tape 2,2 one end coiling of tape is in ruler shell 1 Interior, ruler shell 1 includes opening 6, and tape 2 includes that ruler hooks 3 and ruler hooks end and is located at outside ruler shell 1, equipped with can be relative at opening 6 The protection block 5 of 6 sliding of opening, the protection block 5 are L shape, and L shape protection block 5 includes short side part and long side part, short leg Divide downward, is that a circular hole is arranged at hollow and bottom inside short side part, the Elastic buckle 4 is located inside short side part, the bullet Property buckle 4 be made of the hoodle of the elastic slice and half elliptic that bend, wherein elastic slice is fixedly connected in protection block 5, and hoodle passes through The circular hole of 5 short side part bottom of protection block can do stretching motion inside and outside circular hole, and 1 inner surface of ruler shell is equipped with can be with Elastic buckle 4 The block button hole 9 to match, the two, which is mutually matched, to carry out axial limiting to protection block 5.Fixed-link has a friction in protection block 5 Block 7,2 lower surface of tape are fixedly connected with deceleration block 8, friction block 7 and deceleration block 8 can under frictional force, friction block 7 are generated to sliding Of same size with the width and tape 2 of deceleration block 8, friction block 7 and deceleration block 8 slide generated frictional force and Elastic buckle 4 The summation of generated restraining force is less than the convergent force generated when tape 2 is shunk in block button hole 9.It is also set in 1 inner surface of ruler shell There is a limited block 10, the limited block 10 and ruler shell 1 are integrally formed, and limited block 10 is defined 5 position of protection block, make protection block 5 can not be retracted inside ruler shell 1 when in use, and limited block 10 is equal to the length of protection block 5 in the distance between opening 6.Ruler shell There is a perforative through-hole at center, holds convenient for user.

In use, tape 2 is contracted in ruler shell 1 by internal pretightning force, the drive when user pulls ruler to hook 3 Tape 2 is pulled out by opening, at this point, generating friction since friction block 7 and deceleration block 8 are in contact, as tape moves, drives protection Block 5 makes protection block 5 stretch out ruler shell 1 by opening 6, when the Elastic buckle 4 being connected in protection block 5 is moved to 9 position of block button hole simultaneously After inlay card enters block button hole 9, protection block 5 is limited, stop motion, and protection block 5 stretches out ruler shell 1 as extension, benefit at this time 2 edge of tape at opening 6 can be wrapped up with protection block 5, the index finger that hold the hand of ruler shell 1 can be padded in protection block 5 Lower section measures use, prevents from cutting hand.When the measurement is completed, 2 inside pretightning force of tape drives tape 2 to bounce back in ruler shell 1, In 2 retraction process of tape, deceleration block 8 contacted with friction block 7 generate frictional force, 2 speed of tape reduce, thus avoid tape 2 by In bounce back it is too fast cause the exposed part outside ruler shell 1 to crimp, prevent from cutting hand in 2 retraction process of tape.It is touched when ruler hooks 3 The pressure towards 1 internal direction of ruler shell can be applied when protection block 5 to protection block 5, protection block 5 is driven to bounce back in ruler shell 1.Limit One end that position block 10 can hook 3 far from ruler to protection block 5 limits, and avoids protection block 5 from excessively recycling and falls in ruler shell 1, guarantees Protection block 5 is always towards opening 6.

Claims (6)

1. a kind of anti-cutting hand scroll ruler, including ruler shell (1) and tape (2), which is characterized in that tape one end coiling is in ruler shell Interior, ruler shell includes opening (6), and tape includes ruler hook (3) and ruler hooks end and is located at outside ruler shell, and the opening is equipped with being capable of phase For the protection block (5) of opening sliding, friction block (7) and Elastic buckle (4), tape lower end surface are connected in the protection block It is equipped with the deceleration block (8) that can be slided relative to friction block, the force of sliding friction between friction block and deceleration block is less than tape Contraction is the convergent force generated, and ruler shell inner surface is equipped with the block button hole (9) to match with Elastic buckle size, and ruler shell inner surface is also set There are limited block (10).

2. anti-cutting hand scroll ruler according to claim 1, which is characterized in that the protection block is L shape, L shape protection Block includes short side part and long side part, and short side part is that a circular hole is arranged at hollow and bottom downward, inside short side part, described Elastic buckle is located inside short side part.

3. anti-cutting hand scroll ruler according to claim 1 or 2, which is characterized in that the Elastic buckle includes the bullet of bending Piece and hoodle for doing extended or retracted movement, wherein elastic slice is fixedly connected in protection block, and hoodle is located in half elliptic In circular hole.

4. anti-cutting hand scroll ruler according to claim 1 or 2, which is characterized in that the width of the friction block and deceleration block It is identical as blade width.

5. anti-cutting hand scroll ruler according to claim 1 or 2, which is characterized in that the limited block and ruler shell is integrally formed, Limited block is equal to the length of protection block at a distance from opening.

6. anti-cutting hand scroll ruler according to claim 1 or 2, which is characterized in that through setting one at the ruler shell center The hand hole (11) held convenient for manpower.