CN208688350U

CN208688350U - Steel tape

Info

Publication number: CN208688350U
Application number: CN201821567457.0U
Authority: CN
Inventors: 李欣
Original assignee: Shaanxi Beichen Civil Air Defense Equipment And Facilities Testing Co Ltd
Current assignee: Shaanxi Beichen Civil Air Defense Equipment And Facilities Testing Co Ltd
Priority date: 2018-09-25
Filing date: 2018-09-25
Publication date: 2019-04-02
Anticipated expiration: 2028-09-25

Abstract

The utility model discloses a kind of steel tapes, it is related to dimensional measuring instrument field, aim to solve the problem that the problem of steel tape in the prior art cannot achieve the fast braking in moderating process when tape is withdrawn, it includes ruler shell, the wind spring for being fixed on ruler shell center, spool is fixedly connected with outside the wind spring, the spool outer ring is wound with tape, the ruler shell is equipped with the outlet passed through for tape one end, it further include the pressure ram through the setting of ruler shell peripheral wall, the pressure ram can be connected to the tape periphery setting wound on spool, and it is arranged along spool radial slippage.The utility model realizes in moderating process fast braking at any time using pressure ram, flexible operation, simple, and degree of controllability is high.

Description

Steel tape

Technical field

The utility model relates to dimensional measuring instrument fields, more particularly, to a kind of steel tape.

Background technique

Steel tape is the common measuring tool of people, has the characteristics that easy to carry, but common steel tape is pulling out ruler After band, tape retraction speed is too fast, is not only easy to cause the damage of steel tape internal structure, is also easy to scratch finger, causes to damage Evil.

To solve the above problems, notification number is that CN203981048U discloses a kind of controllable high, low speed withdrawal tape Steel tape, including ruler shell, tape, ruler spring, big lock composition, big lock is a big gate assembly, including flashboard, button, friction head, bullet Spring is transversely provided with three arc-shaped strip grooves above flashboard, a spring is installed before flashboard, spring is in friction head； And an arc-shaped bar shaped boss corresponding with arc-shaped strip groove is arranged below in snap-gauge on the corresponding ruler shell of flashboard.

The steel tape that the controllable high, low speed withdraws tape controls friction head by three arc-shaped strip grooves of setting To the pressing force of tape, so that tape be made to have different recycling speed, it can satisfy control high, low speed and withdraw steel measuring tape band The needs of deceleration；But the power generated due to the elastic deformation of spring is flexible braking power, which, which cannot achieve, is subtracting Fast braking during speed.

Utility model content

The purpose of the utility model is to provide a kind of steel tapes, quick in moderating process with can be realized tape Braking.

The above-mentioned purpose of the utility model has the technical scheme that

A kind of steel tape including ruler shell, is fixed on the wind spring of ruler shell center, is fixedly connected with spool outside the wind spring, The spool outer ring is wound with tape, and the ruler shell is equipped with the outlet passed through for tape one end, further includes through ruler shell peripheral wall The pressure ram of setting, the pressure ram can be connected to the tape periphery setting wound on spool, and it is along spool radial slippage Setting.

By using above-mentioned technical proposal, one end outside ruler shell is stretched out by pressing pressure ram, is around in pressure ram extruding Tape on spool realizes that tape withdraws the adjusting of speed by the dynamics of control pressing；When needing tape to be recovered to a certain length When degree stops, only pressure ram need to be pressed before the length, slow down tape recycling speed gradually by increasing pressing dynamics, and Fast braking is realized in the very fast pressing pressure ram in position for needing to stop；The design structure of pressure ram is simple, and operation is reliable, can people Speed and the fast braking at any time in moderating process are withdrawn for control tape, to realize accurate braking.

The utility model is further arranged to: the steel tape further includes damper brake, and the damper brake includes set on described Brake lining in ruler shell, between ruler shell inner circumferential and tape periphery, brake lining one end extends outlet inside and brake lining is close One end of outlet side can push against the tape setting of corresponding outlet port, and the brake lining is sliding along the direction close to and far from outlet side Shifting setting, close to the one end exported, the lateral bend into outlet is arranged the brake lining, meanwhile, one end of the close outlet of the brake lining, Locking post is fitted with by the side of near reel positioned at brake lining；The sliding trajectory that brake lining is corresponded on the ruler shell is provided with sluice gate, institute It states brake lining and is equipped with the slider for stretching out sluice gate setting far from one end of outlet.

By using above-mentioned technical proposal, when promotion slider, when tape being butted on the inner wall of outlet side using brake lining, by There is the trend to outlet medial motion in tape, and brake lining is arranged close to exit end to spool curving, therefore tape Drive the brake lining curved end contacted to outlet medial movement, and brake lining is equipped with locking post by the cooperation of the side of near reel, it is curved Bent brake lining stress is pressed in locking post after further moving, even if unclamping slider at this time, brake lining can also pull back in tape The locking to tape is realized under the action of power.

The utility model is further arranged to: the pressure ram is arranged through the slider.

By using above-mentioned technical proposal, since pressure ram and damper brake all manually control tape recycling speed, such as The extension of pressure ram and slider are set to different location by fruit, then people needs finger being put in different location in operation It goes to operate, and pressure ram is arranged across slider, be then able to solve the above problem, user of service withdraws speed in control tape When, as long as the finger of control is put on slider, changing force direction can be realized two kinds of operations, easy to use.

The utility model is further arranged to: being equipped with cavity in the slider, is equipped with elastic slice, the elastic slice in the cavity One end is fixedly connected with slider inner wall, and the other end is fixedly connected with pressure ram, and the elastic slice drives the pressure ram far from spool Setting.

By using above-mentioned technical proposal, the setting of elastic slice can make pressure ram rapid after having executed deceleration, braking The tape being around on spool is left, avoids having an impact the withdrawal of subsequent tape.

The utility model is further arranged to: one end that the pressure ram is located in ruler shell is fixedly connected with extrusion head, institute It states extrusion head and is adapted to setting with the radian for the tape being around on spool close to the spool side.

By using above-mentioned technical proposal, the setting of extrusion head increases the contact area between pressure ram and tape, makes Slow down and brake it is relatively reliable, while can also prevent slow down and braking process in because the contact area of pressure ram and tape is small And scratch tape.

The utility model is further arranged to: the tape in the exit is equipped with far from the ruler shell inner wall of brake lining side and rubs Pad.

By using above-mentioned technical proposal, when brake lining pushes tape to be butted on friction plate position, coefficient of friction is larger Friction plate contacted with tape, increase the recycling resistance of tape, improve slowing effect, prevent the sliding of tape under on-position.

The utility model is further arranged to: damping wheel is equipped between on the outside of the spool and on the inside of ruler shell, through described Damping wheel axle center is equipped with central axis, and the damping wheel surrounds the central axis rotation, and the central axis is set along spool radial slippage It is placed on the side wall of the ruler shell and is arranged with the axis parallel of the spool, along described between the damping wheel and the ruler shell Central axis glide direction is additionally provided with elastic component.

By using above-mentioned technical proposal, tape be recovered to be in contact with damping wheel under natural conditions when, with ruler Band continues to withdraw, and damping wheel is extruded and slides to the direction far from spool, and then squeezes elastic component, with twining for tape Around the potential energy of elastic component savings is increasing, and also increasing to the reaction force of spool, the withdrawal speed of tape will be gradually Slow down；In addition, spool is additionally provided with central axis, when tape is contacted with damping wheel during the winding process, damping wheel turns around central axis It is dynamic, to reduce the frictional force to tape, prevent stuck tape in moderating process；The setting of damping wheel is being recovered to tape most Afterwards when the stage, automatic reducing speed withdraws tape more steady, prevents when withdrawing to the end, and withdrawing excessive velocities causes Tape tremble and hurt finger.

The utility model is further arranged to: T-slot is offered respectively on two relative inner side walls of the ruler shell, it is described T-block is slidably connected in T-slot, the central axis both ends are plugged in the extension of the T-block, the elastic component respectively One end is connected in the T-block, and the other end is connected on corresponding ruler shell inner wall.

By using above-mentioned technical proposal, the cooperation of T-slot and T-block has given the guiding of damping wheel in the movement direction to make With, keep the sliding of damping wheel more steady, glide direction more determine.

In conclusion the advantageous effects of the utility model are as follows:

1. tape recycling can not only be made to realize variable speed by the setting of pressure ram, and velocity magnitude is by the pressing that applies Dynamics controls, and flexibility is big, moreover it is possible to fast braking at any time is realized in moderating process；

2. realizing automatic retarding when tape being made to be recovered to final stage by the damping wheel of setting, stablize the recycling of tape, The hand of protection user of service escapes injury.

Detailed description of the invention

Fig. 1 is the cross-sectional view for the steel tape that the utility model discloses, for indicating internal structure and its position of steel tape Relationship；

Fig. 2 is the explosive view of damping wheel part.

In figure, 1, ruler shell；2, wind spring；3, tape；4, spool；5, damper brake；51, slider；52, brake lining；53, locking post； 54, sluice gate；55, cavity；6, pressure ram；61, extrusion head；62, elastic slice；7, it exports；8, friction plate；9, damping wheel；91, center Axis；92, elastic component；93, T-slot；94, T-block.

Specific embodiment

The utility model is described in further detail below in conjunction with attached drawing.

As shown in Figure 1, a kind of steel tape, including ruler shell 1 and the wind spring 2 for being fixed on 1 center of ruler shell, outside wind spring 2 It is fixedly connected with spool 4,4 outer ring of spool is wound with tape 3, and the outlet 7 passed through for 3 one end of tape is provided on ruler shell 1, further includes passing through The pressure ram 6 of 1 peripheral wall of ruler shell setting is worn, one end that pressure ram 6 is located in ruler shell 1 is fixedly connected with extrusion head 61, extrusion head 61 The radian of 3 outmost turns of tape is adapted to setting when withdrawing on spool 4 completely by 4 side of near reel with tape 3, and pressure ram 6 is along spool 4 Radial slippage setting, and be able to drive extrusion head 61 and be connected to 3 periphery of tape wound on spool 4.

During tape is withdrawn, when needing to slow down, one end outside ruler shell 1 is stretched out by pressing pressure ram 6, makes to squeeze Bar 6 pushes extrusion head 61 to squeeze the tape 3 being around on spool 4, utilizes the frictional force and wind spring 2 between extrusion head 61 and tape 3 Elastic force offset rotation slowing or stopping making spool 4；When needing tape 3 slowly to withdraw, control pressing extrusion head 61 Dynamics, so that frictional force between extrusion head 61 and tape 3 is less than the elastic force of wind spring 2, the withdrawal speed of tape 3 slows down at this time, But not stop；When needing tape 3 to be recovered to the stopping of a certain length, pressure ram 6 is pressed before the length, by gradually increasing Add pressing dynamics that tape 3 is made to recycle the very fast pressing pressure ram 6 in position that speed gradually slows down, and stops in needs, makes extrusion head Frictional force between 61 and tape 3 is greater than the elastic force of wind spring 2, and spool 4 stops operating at this time, so that tape 3 stops withdrawing.

Wherein, the radian of 3 outmost turns of tape is suitable when extrusion head 61 is withdrawn on spool 4 completely by 4 side of near reel and tape 3 The setting of tape 3 is directly contacted compared to pressure ram 6 with being arranged, the radian setting of extrusion head 61 increases itself and tape 3 in the former Between contact area, make to slow down and brake it is relatively reliable, while can also prevent slow down and braking process in because of pressure ram 6 It is small with the contact area of tape 3 and scratch tape 3.

The setting of pressure ram 6 can be realized fast braking of the steel tape in moderating process, but its deceleration for tape 3 It is all only temporary with braking, need artificial applied force to be just able to maintain deceleration or on-position, tape 3 can be received at a high speed again after loosing one's grip It returns.

In order to solve the above problem, as shown in Figure 1, steel tape disclosed by the utility model further includes damper brake 5, damper brake 5 Including in ruler shell 1, the brake lining 52 between 3 periphery of 1 inner circumferential of ruler shell and tape, 52 one end of brake lining is extended in outlet 7 Side and brake lining 52 can push against the tape 3 of 7 positions of corresponding outlet close to the one end for exporting 7 sides, and brake lining 52 is along close to and far from out The direction sliding setting of 7 sides of mouth, brake lining 52 are arranged close to one end of outlet 7 to lateral bend in 7 is exported, meanwhile, brake lining 52 is close One end of outlet 7, the locking post 53 for being provided with protrusion by the fitting of the side of near reel 4 positioned at brake lining 52, locking post 53 are fixed on On corresponding 1 inner wall of ruler shell in position；The sliding trajectory that brake lining 52 is corresponded on ruler shell 1 is provided with sluice gate 54, and brake lining 52 is far from out One end of mouth 7, which is fixedly installed, stretches out the slider 51 that sluice gate 54 is arranged, and exports ruler of the tape 3 far from brake lining side at 7 Friction plate 8 is fixedly installed on 1 inner wall of shell.

The course of work and principle of above-mentioned damper brake 5 are as follows: push slider 51, tape 3 is butted on outlet 7 one using brake lining 52 On the friction plate 8 being arranged on the inner wall of side, at this time since tape 3 has the trend to 7 medial motions of outlet, and brake lining 52 is close It exports 7 one end to be arranged to 4 curving of spool, therefore tape 3 drives 52 curved end of brake lining contacted sidesway into outlet 7 It is dynamic, and brake lining 52 is equipped with locking post 53 by the cooperation of the side of near reel 4, curved 52 stress of brake lining is pressed after further moving In locking post 53, even if unclamping slider 51 at this time, brake lining 52 can also match under the action of 3 pull-back forces of tape with locking post 53 It closes, realizes the locking to tape 3.It is contacted using the biggish friction plate 8 of coefficient of friction with tape 3, increases the recycling resistance of tape 3 Power improves slowing effect, prevents tape 3 under on-position from sliding.

Speed is recycled since pressure ram 6 and damper brake 5 all manually control tape 3, if by the extension of pressure ram 6 Divide and be set to different location with slider 51, then people needs for finger to be put in operation different location and goes to operate, and is inconvenient； And to solve the above problems, having as shown in Figure 1, the control bit of pressure ram 6 and damper brake 5 is arranged at one by the utility model Body structure are as follows: be provided with cavity 55 in slider 51, elastic slice 62,62 one end of elastic slice and the fixed company of 51 inner wall of slider are equipped in cavity 55 It connects, the other end is fixedly connected with pressure ram 6, and pressure ram 6 stretches out outside ruler shell 1 through slider 51.

When in use, as long as the finger of control is put on slider 51 by user of service, change force direction is above structure Two kinds of operations can be achieved, it is easy to use；And the effect of elastic slice 62 is the driving after pressing pressure ram 6 and being slowed down or braked Pressure ram 6 is far from spool 4, so that the withdrawal to subsequent tape 3 be avoided to have an impact.

The utility model is additionally provided with automatic control ruler other than being provided with and manually controlling the structure that tape 3 withdraws speed The structure for withdrawing speed with 3.As shown in Figure 1 and Figure 2, sliding is plugged with damping wheel 9 between 1 inside of 4 outside of spool and ruler shell, passes through The shaft core position for wearing damping wheel 9 has a central axis 91, and damping wheel 9 is rotated around central axis 91, two relative inner side walls of ruler shell 1 On offer T-slot 93 respectively along spool 4 is radial, T-block 94 is slidably connected in T-slot 93,91 both ends of central axis are inserted respectively It is connected to the extension of T-block 94, is further fixed on spring, spring one along 91 glide direction of central axis between damping wheel 9 and ruler shell 1 End is connected in T-block 94, and the other end is connected on the inner wall of corresponding ruler shell 1.

The operation principle and process of damping wheel 9 is as follows: under normal circumstances, tape 3 is when being retracted to end, often up and down It trembles and swings, be easiest to incised wound finger at this time.Damping wheel 9 in the utility model spring in the raw when, outside Edge is located at the winding of tape 3 3/4, tape 3 be recovered to be in contact with damping wheel 9 under natural conditions when, with tape 3 after Continuous to withdraw, damping wheel 9 is extruded and T-block 94 is driven to slide along the length direction of T-slot 93 to the direction far from spool 4, And then spring is squeezed, with the winding of tape 3, the potential energy of spring savings is increasing, also increasingly to the reaction force of spool 4 Greatly, the withdrawal speed of tape 3 will gradually slow down；Therefore, the setting of damping wheel 9 makes tape 3 when being recovered to final stage, from Dynamic reducing speed withdraws tape 3 more steady, prevents when withdrawing to the end, withdraws tape 3 caused by excessive velocities and trembles Hurt finger.

The embodiment of present embodiment is the preferred embodiment of the utility model, and not limitation is originally practical new according to this The protection scope of type, therefore: the equivalence changes that all structures, shape, principle according to the utility model are done should all be covered by practical Within novel protection scope.

Claims

1. a kind of steel tape, including ruler shell (1), it is fixed on the wind spring (2) of ruler shell (1) center, the wind spring (2) is fixed outside It connects spool (4), spool (4) outer ring is wound with tape (3), and the ruler shell (1) is equipped with and passes through for tape (3) one end It exports (7), it is characterised in that: further include the pressure ram (6) through the setting of ruler shell (1) peripheral wall, the pressure ram (6) can abut It is arranged in tape (3) periphery wound on spool (4), and it is arranged along spool (4) radial slippage.

2. steel tape according to claim 1, it is characterised in that: further include damper brake (5), the damper brake (5) includes In the ruler shell (1), the brake lining (52) between ruler shell (1) inner circumferential and tape (3) periphery, described brake lining (52) one end It extends on the inside of outlet (7) and brake lining (52) can push against the tape of corresponding outlet (7) position close to one end of outlet (7) side (3) it is arranged, the brake lining (52) slides setting along the direction close to and far from outlet (7) side, and the brake lining (52) is close to outlet (7) one end is arranged to outlet (7) interior lateral bend, meanwhile, one end of the close outlet (7) of the brake lining (52) is located at brake lining (52) side by near reel (4) is fitted with locking post (53)；The sliding trajectory that brake lining (52) is corresponded on the ruler shell (1) is opened Have sluice gate (54), the brake lining (52) is equipped with the slider (51) for stretching out sluice gate (54) setting far from one end of outlet (7).

3. steel tape according to claim 2, it is characterised in that: the pressure ram (6) is arranged through the slider (51).

4. steel tape according to claim 3, it is characterised in that: be equipped with cavity (55) in the slider (51), the sky Elastic slice (62) are equipped in chamber (55), described elastic slice (62) one end is fixedly connected with slider (51) inner wall, the other end and pressure ram (6) It is fixedly connected, the elastic slice (62) drives the pressure ram (6) to be arranged far from spool (4).

5. steel tape according to claim 1, it is characterised in that: it is solid that the pressure ram (6) is located at one end in ruler shell (1) Surely it is connected with extrusion head (61), the extrusion head (61) is close to the spool (4) side and the tape (3) being around on spool (4) Radian be adapted to setting.

6. steel tape according to claim 2, it is characterised in that: the tape (3) at the outlet (7) is far from brake lining (52) ruler shell (1) inner wall of side is equipped with friction plate (8).

7. steel tape according to claim 1, it is characterised in that: set between on the outside of the spool (4) and on the inside of ruler shell (1) There are damping wheel (9), is equipped with central axis (91) through the damping wheel (9) axle center, the damping wheel (9) surrounds the central axis (91) rotate, the central axis (91) along the side wall that spool (4) radial slippage is set to the ruler shell (1) and with the spool (4) axis parallel setting, along the central axis (91) glide direction between the damping wheel (9) and the ruler shell (1) inner wall It is additionally provided with elastic component (92).

8. steel tape according to claim 7, it is characterised in that: on two relative inner side walls of the ruler shell (1) respectively It offers T-slot (93), is slidably connected T-block (94) in the T-slot (93), grafting is distinguished at central axis (91) both ends Extension in the T-block (94), described elastic component (92) one end are connected on the T-block (94), other end connection In on corresponding ruler shell (1) inner wall.