CN210486694U

CN210486694U - Steel tape

Info

Publication number: CN210486694U
Application number: CN201921958191.7U
Authority: CN
Inventors: 陈仲昆; 祁文格; 柴桂莲; 尚威; 王军
Original assignee: Hebei Ruichi Engineering Project Management Co Ltd
Current assignee: Hebei Ruichi Engineering Project Management Co Ltd
Priority date: 2019-11-12
Filing date: 2019-11-12
Publication date: 2020-05-08
Anticipated expiration: 2029-11-12

Abstract

The utility model relates to a steel tape, belong to measuring tool technical field, which comprises a housin, set firmly the first fixed axle in the casing, the second fixed axle that sets firmly in the casing, rotate the connection pad of connection on first fixed axle, set firmly the adapter sleeve in connection pad axial one side, the coil spring of setting between first fixed axle and adapter sleeve, the braking subassembly of setting at the adapter sleeve outer peripheral face, rotate the tape measure dish of connecting at second fixed axle outer peripheral face, the steel rule strip of winding on the tape measure dish, the linkage subassembly of setting between first fixed axle and second fixed axle, the braking subassembly is including setting firmly the ratchet at the adapter sleeve outer peripheral face, the gag lever post that articulates on the casing through the articulated shaft, the one end and the ratchet inconsistent of articulated shaft are kept away from to the gag lever. Prevent the coil spring from backrush through conflict power through ratchet and gag lever post, reduced the emergence of the steel tape strip phenomenon of backrush suddenly when using, make the operator use the in-process of steel tape more safe.

Description

Steel tape

Technical Field

The utility model relates to a measuring tool technical field, in particular to steel tape.

Background

The steel tape is a measuring tool commonly used in daily life and mainly comprises a shell, a coil spring arranged in the shell, a tape disc fixedly arranged on the peripheral surface of the coil spring, and steel tape strips uniformly wound on the peripheral surface of the tape disc, wherein one end of each steel tape strip penetrates through the shell and is fixedly provided with a tape hook. When in use, the steel ruler strip is pulled out from the shell by a proper distance through the ruler hook, so that an operator can conveniently measure an object; after the measurement is finished and the ruler hook is released, the steel ruler strip can be automatically rewound into the shell under the action of the coil spring. To facilitate the use of the tape by the operator, the steel tape is typically provided with a brake assembly which prevents the steel tape from being temporarily wound into the housing.

The brake assembly in the prior art usually uses a pressing block or a pressing rod to be abutted to the surface of the steel ruler strip, and the steel ruler strip is fixed through extrusion force, so that the steel ruler strip cannot be rewound into the shell. This kind of braking mode can produce partial wearing and tearing after the use of a period of time, leads to briquetting or depression bar to diminish and become invalid the extrusion force that the steel rule strip provided, can appear the operator at the in-process that uses the steel tape measure, the phenomenon of automatic backrush suddenly of steel rule strip, because two sides of steel rule strip are sharp, if the operator too late to react very easily by the steel rule strip cut.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a steel tape, it uses ratchet and gag lever post to prevent the coil spring backrush through conflict power, has reduced the emergence of steel tape strip sudden backrush phenomenon when using, makes the operator use the in-process of steel tape safer.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a steel tape comprises a shell, a first fixed shaft, a second fixed shaft, a connecting disc, a connecting sleeve, a coil spring, a braking assembly, a tape measure disc, a steel rule strip and a linkage assembly, wherein the first fixed shaft is fixedly arranged in the shell, the axis of the second fixed shaft is parallel to the first fixed shaft; one end of the limiting rod, which is far away from the articulated shaft, is abutted against the ratchet wheel.

By adopting the technical scheme, when the steel ruler strip is pulled by the ruler hook, the steel ruler strip moves the ruler disc to rotate, the ruler disc drives the connecting disc to synchronously rotate through the linkage assembly, so that the connecting disc drives the connecting sleeve and the ratchet wheel to simultaneously rotate, and the coil spring is wound to rotate to store force; after the steel ruler strip is stopped to be pulled, the coil spring drives the rotating sleeve to rotate, but the ratchet wheel cannot rotate under the action of the limiting rod, and only one rotation trend exists, so that the steel ruler strip outside the shell cannot be withdrawn; after the measurement is completed, the limiting rod is stirred, the ratchet wheel is separated from the control of the limiting rod, the coil spring drives the connecting sleeve and the ratchet wheel to rotate reversely, then the winding roll is driven to rotate reversely through the linkage assembly, and the steel ruler strip is retracted into the shell. The ratchet wheel and the limiting rod prevent the coil spring from being rewound through the abutting force, the occurrence of the phenomenon that the steel tape strip is rewound suddenly when the steel tape is used is reduced, and an operator can use the steel tape more safely.

The utility model discloses further set up to: the one end that the ratchet was kept away from to the gag lever post has set firmly the briquetting, the articulated shaft is located between briquetting and the gag lever post, set up the logical groove with briquetting looks adaptation on the casing, the briquetting passes logical groove and is located the outside of casing.

Through adopting above-mentioned technical scheme, the operator can use the briquetting to stir the gag lever post, is convenient for the operator to the use of steel tape measure.

The utility model discloses further set up to: the outer peripheral face of the articulated shaft is sleeved with a torsional spring, and one end of the torsional spring is fixedly connected with the limiting rod, and the other end of the torsional spring is fixedly connected with the shell.

Through adopting above-mentioned technical scheme, the torsional spring can make the gag lever post reply initial position automatically, has improved the convenience of steel tape measure.

The utility model discloses further set up to: the linkage assembly comprises a first gear rotationally connected to the first fixing shaft and a second gear rotationally connected to the second fixing shaft and meshed with the first gear, the first gear is fixedly connected with the connecting disc, and the second gear is fixedly connected with the tape measure disc.

Through adopting above-mentioned technical scheme, the transmission of power between tape measure dish and the rolling disc has been realized to the cooperation of first gear and second gear, makes overall structure comparatively compact, has improved the stability of steel tape measure.

The utility model discloses further set up to: the transmission ratio of the first gear to the second gear is less than one.

Through adopting above-mentioned technical scheme, make the rotational speed of second gear be less than the rotational speed of first gear to reduce the slew velocity of tape measure dish, and then reduced the speed when steel ruler strip is rewound, reduced the phenomenon emergence that steel ruler strip recovery rate is too fast and cut operator's hand, improved the security of steel tape measure.

The utility model discloses further set up to: and two axial ends of the tape measure disc are respectively and fixedly provided with a limiting disc.

Through adopting above-mentioned technical scheme, two spacing dishes can prevent that the steel tape from pulling out or moving toward tape measure dish axial both ends when rolling back.

The utility model discloses further set up to: the four corners of the shell are rounded corners.

Through adopting above-mentioned technical scheme, the fillet can make the operator more be convenient for take the steel tape measure.

The utility model discloses further set up to: and a protective sleeve is arranged on the outer side of the shell.

Through adopting above-mentioned technical scheme, the frictional force between multiplicable casing of protective sheath and the operator hand makes the steel tape measure be difficult to the landing when using.

To sum up, the utility model discloses following beneficial effect has:

1. after the steel tape is pulled out of the shell, the ratchet wheel and the limiting rod prevent the coil spring from being rewound through the abutting force, the occurrence of the phenomenon that the steel tape is rewound suddenly when the steel tape is used is reduced, and an operator can use the steel tape more safely.

2. The power is transmitted between the measuring tape disc and the connecting disc through the first gear and the second gear, so that the integral structure is compact, the transmission ratio is smaller than one, the speed of the measuring tape disc during rotation can be reduced, the speed of the steel measuring tape during rewinding is reduced, and the safety of the steel measuring tape is improved.

3. The two sides of the tape disc are provided with the limiting discs, so that the phenomenon that the steel tape moves towards the tape disc in the axial direction when the steel tape is pulled out or rewound can not occur, and the stability of the steel tape in use is improved.

Drawings

FIG. 1 is a schematic structural view of an embodiment;

FIG. 2 is a cross-sectional view showing the internal structure of the steel tape;

FIG. 3 is a partial sectional view showing the coupling relationship of the coil spring, the coupling sleeve and the first stationary shaft;

fig. 4 is a partial sectional view showing the structure of the linkage assembly and the brake assembly.

In the figure, 1, a housing; 2. a first fixed shaft; 21. a connecting disc; 22. connecting sleeves; 23. a coil spring; 3. a second fixed shaft; 31. a tape measure reel; 32. a limiting disc; 33. a steel rule strip; 34. a ruler hook; 4. a linkage assembly; 41. a first gear; 42. a second gear; 5. a brake assembly; 51. a ratchet wheel; 52. a limiting rod; 53. hinging a shaft; 54. briquetting; 55. a torsion spring; 6. A protective cover.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

A steel tape, as shown in fig. 1 and 2, comprises a shell 1 and a protective cover sleeved outside the shell 1, wherein the shell 1 is hollow, four circumferential end angles of the shell 1 are set to be round corners, a first fixing shaft 2 is arranged in the shell 1, the first fixing shaft 2 is arranged along the horizontal direction, and two axial ends of the first fixing shaft 2 are fixedly connected with two inner side walls of the shell 1 respectively. The outer peripheral surface of the first fixed shaft 2 is sleeved with a connecting disc 21 which is rotatably connected with the first fixed shaft, the axis of the connecting disc 21 is overlapped with the axis of the first fixed shaft 2, and the connecting disc 21 is positioned on one axial side of the first fixed shaft 2. A connecting sleeve 22 is fixedly arranged on the side surface of the connecting disc 21 close to the middle part of the first fixed shaft 2, the axis of the connecting sleeve 22 is superposed with the axis of the first fixed shaft 2, the connecting sleeve 22 and the first fixed shaft 2 are arranged at intervals, a coil spring 23 is arranged between the first fixed shaft 2 and the connecting sleeve 22, one end of the coil spring 23 is fixedly connected with the first fixed shaft 2, and the other end of the coil spring 23 is fixedly connected with the connecting sleeve 22.

As shown in fig. 2 and 3, a second fixing shaft 3 is disposed in the housing 1 on one side of the first fixing shaft 2, an axis of the second fixing shaft 3 is parallel to an axis of the first fixing shaft 2 and is located on the same horizontal plane, and two axial ends of the second fixing shaft 3 are respectively fixedly connected to two inner sidewalls of the housing 1. The outer circumferential surface of the second fixing shaft 3 is sleeved with a tape disc 31 which is rotatably connected with the second fixing shaft, the axis of the tape disc 31 is overlapped with the axis of the first fixing shaft 2, two ends of the axis of the tape disc 31 are respectively and fixedly provided with a limiting disc 32, the diameter of each limiting disc 32 is larger than that of the tape disc 31, and the axis of each limiting disc 32 is overlapped with that of the tape disc 31. Steel ruler strips 33 are uniformly wound on the peripheral surface of the tape disc 31, the steel ruler strips 33 are located between the two limiting discs 32, one end of each steel ruler strip 33 is fixedly connected with the tape disc 31, the other end of each steel ruler strip 33 penetrates through the shell 1 to be connected with the shell in a sliding mode, a ruler hook 34 is fixedly arranged at one end, located outside the shell 1, of each steel ruler strip 33, and each ruler hook 34 abuts against the shell 1.

As shown in fig. 2 and 4, a linkage assembly 4 is provided between the tape reel 31 and the connecting disc 21, and the linkage assembly 4 is used for driving power between the tape reel 31 and the connecting disc 21. The linkage assembly 4 comprises a first gear 41 and a second gear 42, the first gear 41 is fixedly arranged on one side of the connecting disc 21 far away from the connecting sleeve 22, and the axis of the first gear 41 is overlapped with the axis of the first fixed shaft 2 and is in rotating connection with the first fixed shaft. The second gear 42 is fixedly arranged on the side surface of the tape measure disc 31 close to the first gear 41, and the axis of the second gear 42 is overlapped with the axis of the second fixed shaft 3 and is rotationally connected with the second fixed shaft. The first gear 41 and the second gear 42 are meshed with each other, and the transmission ratio of the first gear 41 and the second gear 42 is less than one, so that the speed of the steel ruler strip 33 during rewinding is reduced.

As shown in figures 2 and 4, a brake assembly 5 is arranged between the connecting disc 21 and the shell 1, and the brake assembly 5 is used for preventing the steel measuring tape 33 from automatically rolling back. The brake component 5 comprises a ratchet wheel 51 and a limiting rod 52, the ratchet wheel 51 is sleeved on the peripheral surface of the connecting sleeve 22 and is fixedly connected with the connecting sleeve, the limiting rod 52 is located above the ratchet wheel 51, one end of the limiting rod 52 is abutted to the ratchet wheel 51, the other end of the limiting rod is hinged to the shell 1 through a hinge shaft 53, the axis of the hinge shaft 53 is parallel to the axis of the first fixing shaft 2, and two axial ends of the hinge shaft 53 are respectively connected with the shell 1 in a rotating mode. One end of the limiting rod 52 far away from the ratchet 51 is fixedly provided with a pressing block 54, the hinge shaft 53 is positioned between the pressing block 54 and the limiting rod 52, the shell 1 is provided with a through groove matched with the pressing block 54, and the pressing block 54 penetrates through the through groove and is positioned on the outer side of the shell 1. The axial one end of articulated shaft 53 is provided with torsional spring 55, and torsional spring 55 cover is established on the outer peripheral face of articulated shaft 53, and the one end and the casing 1 fixed connection of torsional spring 55, the other end and briquetting 54 fixed connection.

An operator measures an object, the steel ruler 33 is pulled out of the shell 1 through the ruler hook 34, the steel ruler 33 drives the tape measure disc 31 to rotate when moving, the tape measure disc 31 transmits power to the first gear 41 through the second gear 42, so that the first gear 41 drives the connecting disc 21 to rotate along the axis of the first fixing shaft 2, the connecting sleeve 22 drives the coil spring 23 to contract when rotating along with the connecting disc 21, the coil spring 23 is accumulated with power, and the ratchet wheel 51 is driven to rotate by the connecting sleeve 22; after the steel ruler strip 33 stops being pulled, the connecting sleeve 22 tends to rotate in one direction under the driving of the coil spring 23, but the ratchet wheel 51 cannot rotate due to the limitation of the limiting rod 52, so that the steel ruler strip 33 cannot be rewound into the shell 1; after the operator finishes the measurement, the operator only needs to press the pressing block 54, so that the pressing block 54 drives the limiting rod 52 to rotate around the axis of the hinge shaft 53, thereby the ratchet wheel 51 is separated from the limitation of the limiting rod 52, the coil spring 23 drives the connecting sleeve 22 to rotate reversely, and the tape disc 31 is driven to rotate under the action of the first gear 41 and the second gear 42, so that the steel tape 33 outside the housing 1 is rewound onto the tape disc 31 inside the housing 1. The coil spring 23 is prevented from being rewound through the abutting force of the ratchet wheel 51 and the limiting rod 52, the phenomenon that the steel tape 33 is rewound suddenly when the steel tape is used is reduced, and an operator can use the steel tape more safely.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. A steel tape, characterized in that: comprises a shell (1), a first fixed shaft (2) fixedly arranged in the shell (1), a second fixed shaft (3) fixedly arranged in the shell (1) and the axis of which is parallel to the first fixed shaft (2), a connecting disc (21) rotatably connected on the first fixed shaft (2), a connecting sleeve (22) fixedly arranged on one axial side of the connecting disc (21) and arranged at an interval with the first fixed shaft (2), a coil spring (23) arranged between the first fixed shaft (2) and the connecting sleeve (22), a braking component (5) arranged on the outer peripheral surface of the connecting sleeve (22), a tape measure disc (31) rotatably connected on the outer peripheral surface of the second fixed shaft (3), a steel rule strip (33) wound on the tape measure disc (31), and a linkage component (4) arranged between the first fixed shaft (2) and the second fixed shaft (3), wherein one end of the steel rule strip (33) far away from the tape measure disc (31) penetrates through the shell (1) and is fixedly connected with a rule hook (34), the brake component (5) comprises a ratchet wheel (51) fixedly arranged on the peripheral surface of the connecting sleeve (22) and a limiting rod (52) hinged on the shell (1) through a hinged shaft (53), and one end, far away from the hinged shaft (53), of the limiting rod (52) is abutted to the ratchet wheel (51).

2. A steel tape measure according to claim 1, wherein: one end, far away from the ratchet wheel (51), of the limiting rod (52) is fixedly provided with a pressing block (54), the hinge shaft (53) is located between the pressing block (54) and the limiting rod (52), the shell (1) is provided with a through groove matched with the pressing block (54), and the pressing block (54) penetrates through the through groove and is located on the outer side of the shell (1).

3. A steel tape measure according to claim 1, wherein: the outer peripheral face of articulated shaft (53) is gone up the cover and is equipped with torsional spring (55), the one end and gag lever post (52) fixed connection, the other end and casing (1) fixed connection of torsional spring (55).

4. A steel tape measure according to claim 1, wherein: the linkage assembly (4) comprises a first gear (41) rotatably connected to the first fixing shaft (2) and a second gear (42) rotatably connected to the second fixing shaft (3) and meshed with the first gear (41), the first gear (41) is fixedly connected with the connecting disc (21), and the second gear (42) is fixedly connected with the tape measure disc (31).

5. A steel tape measure according to claim 4, wherein: the transmission ratio of the first gear (41) to the second gear (42) is less than one.

6. A steel tape measure according to claim 1, wherein: and two axial ends of the tape measure disc (31) are respectively and fixedly provided with a limiting disc (32).

7. A steel tape measure according to claim 1, wherein: four corners of the shell (1) are rounded.

8. A steel tape measure according to claim 1, wherein: the outer side of the shell (1) is provided with a protective sleeve.