WO2019135610A1 - Tape measure having dual brake - Google Patents

Abstract

A tape measure having a dual brake comprises: a housing; a reel rotatably mounted inside the housing; and a blade to be withdrawn through an inlet of the housing, and has: a first brake including a first stopper for fixing the blade and a first release button for interlocking with the first stopper; and a second brake including a second stopper for fixing the blade separately from the first stopper and a second release button for interlocking with the second stopper, wherein the first release button and the second release button are interlockably mounted such that when the first release button operates the first stopper in order to release the blade, the second stopper can be also operated in order to release the blade.

Description

Tape measure with dual brakes

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape measure, and more particularly, to a tape measure having a dual brake including both a manual brake capable of temporarily fixing the blade exposed to the outside of the housing and an automatic self-locking function.

A typical tape measure includes a housing, a reel resiliently supported within the housing, a blade wound in a coil shape on the reel, and an end hook coupled to the end of the blade. The user can pull the blade from the end of the end hook for measurement and withdraw the desired length to measure the length or distance of the object.

The blade drawn from a conventional tape measure can be entrained into the housing by the elasticity of the spring incorporated in the reel. However, the blade withdrawn from the tape measure with the self-locking function does not get caught in the housing and remains stationary in the withdrawn state. Therefore, it is possible to restore the blade by operating a separate release button or the like in the tape measure having the self-lock function.

Japanese Laid-Open Patent Application No. 2008-39732 discloses a tape measure having a self-lock function. 1, the roller presses the upper surface of the blade, the force applied by the lower surface of the inclined surface is increased, and the upper surface of the blade is not pressed to the bottom surface below the center of the roller.

Korean Patent No. 472991 discloses a tape measure having a self-locking function. 2, the blade passes between the lower roller and the upper roller, and the wedge-shaped stopper is pressed between the upper roller and the blade to prevent the blade, which is automatically discharged, from flowing back.

As described above, in the tape measure having a conventional self-lock, the stopper is brought into close contact with the blade by a spring. However, this approach may tend to weaken self-locking over time.

The present invention provides a tape measure with dual brakes that can compensate for the self-locking function that weakens over time.

The present invention provides a tape measure having a dual brake including a manual brake including a self-locking function, which can simultaneously release the self-lock and the manual brake in one operation.

The present invention provides a tape measure having a dual brake that is structurally connected by a self-release button and a manual brake release button.

According to an exemplary embodiment of the present invention for achieving the above-mentioned objects of the present invention, there is provided a method of manufacturing an electronic device including a housing, a reel rotatably mounted inside the housing, and a blade drawn through an inlet of the housing, A tape brake having a dual brake includes a first brake including a first stopper for fixing the blade and a first release button for interlocking with the first stopper and a second stopper for fixing the blade separately from the first stopper, And a second release button interlocked with the second stopper, wherein the first release button and the second release button are interlockingly mounted so that the first release button presses the first stopper The second stopper can also be operated to release the blade.

It is preferable that the first release button and the second release button operate in the same type of operation mode in order to be interlockingly mounted. In the present invention, the first release button and the second release button are assembled on the same shaft, As shown in FIG.

Specifically, the first release button may include a first button body rotatably coupled to the housing and at least one engagement groove opened toward the bottom surface from the side of the first button body, A second button body positioned forward of the button body and rotatably coupled to the housing, and a latching bar extending from the second button body and engaged with the latching groove formed in the first button body. In this case, when the user presses the first release button, the second release button interlocks with the latch bar to move the second stopper in a direction to separate the second stopper from the blade. However, it may be desirable that the movement of the second release button does not affect the operation of the first release button in a state where the first release button is not pressed.

The second stopper may move up and down around the inlet of the housing. The second button body may include a cam for supporting the upper surface of the second stopper. By the operation of the second button body, Up and down motion.

Here, the first release button and the second release button may be exposed to the outside of the housing, and the second button body may further include a locking jaw for restricting entry of the second release button into the housing, The second button body can be prevented from entering beyond a predetermined depth even if the second stopper presses the blade with the second stopper, and it is also possible to manually operate only the second brake by using the stopping jaw.

Here, the first button body and the second button body can be rotatably coupled to the housing around the same axis, thereby facilitating assembly.

The first release button may include a first button body and a first actuating rod having one end physically connected to the first button body and the other end physically connected to the first stopper. The first operating rod is resiliently supported so as to bring the first stopper into close contact with the reel with respect to the housing, and the first stopper is formed in a wedge shape and positioned between the blade wound on the reel and the blade unwound from the reel to the entrance of the housing , And the self-locking function can be implemented.

Herein, "physically connected" means a combination connected to transmit force, and may include a case where they are integrally formed, a case where they are connected through assembly, or a case where they are separated from each other, .

The tape measure with dual brake of the present invention can compensate for the self-locking function that weakens over time and can be applied to a self-locking first brake and a secondary brake as an auxiliary or manual brake, A countermeasure can be provided.

By separating the self-lock and the manual brake, the tape measure with the dual brake of the present invention can smoothly and smoothly pull out the blade when pulling out the blade from the self-lock, and surely separates the first stopper, It is possible to prevent abrasion. In addition, since the self-lock and the manual brake can be released at the same time by a simple and unified operation of the first release button, it is possible to reduce a feeling of unusual feeling in use.

In addition, the tape measure with dual brake of the present invention can release the self-lock and the manual brake at the same time by one operation, and the self-lock release button and the manual brake release button can be structurally connected to easily implement the assembly.

FIGS. 1 and 2 are views for explaining a tape measure having a conventional self-lock function.

3 is a view for explaining a tape measure having a dual brake according to an embodiment of the present invention.

4 is a view for explaining a part of a tape measure having a dual brake shown in Fig.

5 is a view for explaining the internal structure of the tape measure having the dual brake of FIG.

6 is a view for explaining the operation of the first brake in the tape measure having the dual brake of FIG.

FIG. 7 is a view for explaining the operation of the second brake in the tape measure having the dual brake of FIG. 3; FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments. For reference, the same numbers in this description refer to substantially the same elements and can be described with reference to the contents described in the other drawings under the above-mentioned rules, and the contents which are judged to be obvious to the person skilled in the art or repeated can be omitted.

FIG. 3 is a view for explaining a tape measure having dual brakes according to an embodiment of the present invention, FIG. 4 is a view for explaining a part of a tape measure having a dual brake of FIG. 3, Fig. 5 is a view for explaining the internal structure of a tape measure having a brake. Fig.

For reference, in the present embodiment, the first brake implements the self-lock and the second brake implements the manual brake using the frictional force, but in another embodiment of the present invention both the first brake and the second brake implement self- All of which can be provided to implement a manual brake.

3 to 5, a tape measure 100 having a dual brake according to the present embodiment includes a housing 110, a reel 120 rotatably mounted in the housing 110, a housing 110, A blade 130 that is drawn through an inlet 112 of the blade 130 and an end hook 140 that is mounted to an end of the blade 130.

Particularly, the tape measure 100 according to the present embodiment includes a first brake 150 and a second brake 160 for fixing the blade 130, and the first brake 150 is directly connected to the blade 130 The first brake 152 may include a first stopper 152 and a first release button 154 interlocking with the first stopper 152. The second brake 160 may include a blade 130 And a second release button 164 interlocked with the second stopper 162. The second release button 164 may be configured to be in operative communication with the second stopper 162. [

The first release button 154 and the second release button 164 are interlockingly mounted so that when the first release button 154 operates the first stopper 152 to release the blade 130 The second stopper 162 may also operate to release the blade 130 at the same time.

Therefore, the fixing force to the blade 130 can be improved through the dual brake, and the releasing of one brake can be interlocked with the releasing of the other brake, so that it is not necessary to release the dual brake. Here, the dual brake is not always released at the same time, but can be interlocked only in one direction. For example, the release of the first brake may force the second brake to be released, but the release of the second brake may prevent the release of the first brake.

It is preferable that the first release button 154 and the second release button 164 operate in the same type of operation mode so that the first release button and the second release button can be interlocked with each other. And may be provided so as to be assembled on the same shaft to perform rotational motion.

4, the first release button 154 includes a first button body 156 rotatably coupled to the housing 110 and a second button body 156 extending from both sides of the first button body 156, The second release button 164 may include a second button body 166 located forward of the first button body 156 and rotatably coupled to the housing 110 and a second button body 166 positioned forward of the first button body 156, And a latching bar 167 extending from the button body 166 and engaged with the latching groove 157 formed in the first button body 156.

The first release button 154 may include a first actuating rod 158 that is integrally formed and rotatable with the first button body 156 and the first button body 156 and may include a first actuating rod 158 May be mounted on the first stopper 152. A spring is interposed between the first actuating rod 158 and the inner structure of the housing 110 to elastically support the first actuating rod 158. The first actuating rod 158 can elastically support the first stopper 152 against the housing 110 so as to be brought into close contact with the reel 120 and the first stopper 152 is formed into a wedge shape The blade 130 wound around the reel 120 and the blade 130 unwound from the reel 120 and drawn into the inlet 112 of the housing 110 can realize the self-locking function.

Although the first button body 156 and the first actuating rod 158 are integrally connected to each other in this embodiment, they may be assembled in some cases and are separated from each other like a gear-pinion or the like, As shown in FIG.

6 is a view for explaining the operation of the first brake in the tape measure having the dual brake of FIG.

Referring to FIG. 6A, the first stopper 152 may closely contact the reel 120 and the blade 130 to implement self-locking. Here, the second brake 160 is in a released state, and the first brake 150 can basically remain locked as a self lock.

Referring to FIG. 6 (b), the user can press the first release button 154 to temporarily switch the first brake 150 to the released state. The first stopper 152 is detached from the reel 120 or the blade 130 and the blade 130 is rotated in a winding state by the restoring force of the reel 120 so that the end hook 140 is rotated The blade 130 may return until it stops at the inlet 112.

FIG. 7 is a view for explaining the operation of the second brake in the tape measure having the dual brake of FIG. 3; FIG.

Referring to FIG. 7 (a), the user can press the second release button 164 to switch the second brake 160 to the locked state. The second stopper 162 may move up and down around the inlet 112 of the housing 110 and the second button body 166 may include a cam 168 supporting the upper surface of the second stopper 162 . Accordingly, when the user presses the second release button 164, the second button body 166 moves downward to press the upper end of the second stopper 162 with the cam 168 formed on the bottom surface thereof, The upper surface of the blade 130 can be pressed and temporarily fixed while the stopper 162 descends.

The second button body 166 is formed with a latching protrusion 169 at the front of the second button body 166 and the second release button 164 does not extend beyond a predetermined depth into the housing 110 by the latching protrusion 169. In addition, the user can lift the second release button 164 through the latching jaw 169, and optionally only the second brake 160 can be switched from the lock to the unlocked state.

Referring to FIG. 7B, when the user presses the first release button 154, the second release button 164 is interlockingly rotated upward through the engagement bar 167, and the second release button 164 is rotated, The second stopper 162 having a tendency to move upward can be also lifted and separated from the blade 130. [ That is, by the operation of the first release button 154, the lock of the second brake 160 can be forcibly released.

However, when the first release button 154 is not pressed, the movement of the second release button 164 does not affect the operation of the first release button 154. [ For example, if the second release button 164 is lifted while the first release button 154 is not pressed, the second stopper 162 is raised to release the lock by the second brake 160, The first release button 154 may not be affected by the movement of the second release button 164 because the engagement bar 167 moves in the engagement groove 157. [

Although the present invention has been described with reference to the preferred embodiments thereof, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined in the following claims. It can be understood that

Claims (7)

A tape measure comprising a housing, a reel rotatably mounted within the housing, and a blade extending through the inlet of the housing, A first brake including a first stopper for fixing the blade and a first release button interlocking with the first stopper; And And a second brake including a second stopper for fixing the blade separately from the first stopper, and a second release button interlocked with the second stopper, Wherein the first release button and the second release button are interlockingly mounted so that when the first release button activates the first stopper to release the blade, the second stopper also releases the blade Wherein the tape measure is operative. The method according to claim 1, Wherein the first release button and the second release button are assembled on the same shaft and are simultaneously or separately rotated. The method according to claim 1, The first release button includes a first button body rotatably coupled to the housing and at least one engagement groove opened toward the bottom surface from the side of the first button body, Wherein the second release button comprises a second button body positioned forward of the first button body and rotatably coupled to the housing and a second button body extending from the second button body and selectively engaging the engagement groove formed in the first button body Comprising a catching bar which is engaged, The first releasing button is moved in the direction of separating the second stopper from the blade through the latching bar, but when the first releasing button is not depressed, Wherein the movement does not affect the operation of the first release button. The method of claim 3, Wherein the second stopper moves up and down around the inlet of the housing and the second button body includes a cam supporting an upper surface of the second stopper. 5. The method of claim 4, Wherein the second button body further comprises a latch jaw for restricting entry of the second release button into the housing. The method of claim 3, Wherein the first button body and the second button body are rotatably coupled to the housing about the same axis. The method according to claim 1, The first release button includes a first button body and a first actuating rod that is physically connected to the first button body at one end and the other end is physically connected to the first stopper, The first operating rod is resiliently supported to bring the first stopper against the reel in close contact with the reel, Wherein the first stopper is formed in a wedge shape and is positioned between a blade wound on the reel and a blade unwound from the reel and drawn to the inlet of the housing to implement a self-locking function.

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