JP3062773U - Tape measure buffer device - Google Patents

Abstract

(57) [Summary] (Problem corrected) [Problem] Since the wound tape is swinging irregularly right and left and up and down, the position of the hook at the tip of the tape is always the same when it collides with the shock buffer. The posture (state) was not always set, and the impact buffer could not sufficiently reduce the collision energy of the hook. Accordingly, it is an object of the present invention to provide a shock absorber in which the shock buffer can follow the posture of the hook at the time of the collision, and can reduce the collision energy with a simple structure. A shock absorber (1) is provided inside a tape entrance (11).
In the rear part of the frame body, shock buffers are provided on the left and right sides to reduce the collision energy of the hook 17 at the tip of the tape 16, so that these shock buffers can individually buffer the shock. As a result, the hook 17
Even if the vehicle collides obliquely, the collision part can immediately follow the posture of the hook to reduce the collision energy.

Description

[Detailed description of the invention]

[0001]

[Industrial applications]

 The present invention relates to a shock absorber installed in a tape entrance for damping an impact during tape winding.

[0002]

[Prior art and problems]

 Today, most tape measures have a structure in which the tape is constantly urged in the winding direction by the urging means provided on the rotating drum. Is stored in the biasing means, which becomes the winding energy when the tape is stored. The tape is automatically wound into the case by releasing the tape or releasing the brake mechanism.

At this time, the rotating drum winds up the tape while rotating at a high speed by the stored energy, and the tape is wound up to the end while maintaining the high speed, and a hook provided at the leading end of the tape is used. It collides with a shock absorber installed in the tape entrance and stops.

An impact buffer provided in the shock absorber reduces the collision energy, and the collision energy is reduced by various methods to prevent damage to the hook provided at the leading end of the tape. ing. However, since the wound tape swings irregularly right and left and up and down, the hook does not always have the same posture (state) when colliding with the shock absorber. The impact buffer could not sufficiently reduce the collision energy of the hook, and the hook was broken and sometimes the shock absorber was damaged.

[0005]

【Purpose】

 The present invention has been made in view of the above-described problems, and a shock absorber in which an impact shock absorber can follow the posture of a hook at the time of a collision and can reduce the collision energy with a simple structure. The purpose is to provide.

[0006]

[Means to solve the problem]

 The gist of the present invention is that a rotating drum having a tape winding spring is rotatably mounted on a shaft of an inner wall of a case. Shock absorbers are provided on the left and right sides of the tape measure, respectively, and the shock absorbers individually buffer shocks.

Here, as a form in which the shock absorber is provided inside the tape entrance, a form in which the entire shock absorber including the protrusion of the hook is provided inside the tape entrance, and a collision of the hook of the shock absorber with the hook, And the form in which the area around the tape exits through the entrance of the tape.

The buffer device is described in further detail. The buffer device is provided inside the tape entrance below the front wall of the tape measure case, and the tape is wound at high speed by the winding energy accumulated in the urging means. This device reduces the collision energy of the hook at the tip of the tape when it is hit.

[0009] The shock absorber has a frame having a tape through hole in the center, and a collision portion which collides with a hook is formed at a lower portion of a front portion of the frame surrounding the through hole. An impact buffer is formed at the bottom to reduce the impact energy of the hook. It is desirable that the shock absorbing portions are provided on the right and left sides of the rear portion of the frame body, respectively, and that the shock absorbing portions are individually provided to perform a buffering operation.

A base for supporting the buffer arm may be provided on each of the right and left sides of the rear portion of the frame, but is preferably provided substantially at the center of the rear portion of the frame, and the buffer arm is extended right and left from the base. It is better to use The shock absorbing portion (buffering arm) is not particularly limited in its shape, structure, or material as long as the impact energy of the hook can be sufficiently reduced, and any suitable shape, structure, or material (resin) can be used. Etc.).

[0011] The upper frame is cut off from the center of the upper frame, and a gap is provided in the frame so that the tape can be inserted into the frame (tape through hole). The gap is not particularly limited in its cutting width, cutting direction, cutting shape, etc., as long as the tape can be inserted into the frame. And the like.

[0012]

[Action]

 Since the tape measure buffer device of the present invention has the above-described structure, if the hook at the tip of the tape that is wound at a high speed hits the collision portion of the buffer device obliquely, the collision portion becomes the collision energy. The hook retreats and follows the hook, so that the surface of the collision part is parallel to the surface of the hook, and the collision energy is reduced by the shock buffering parts (buffering arms) on the right and left rear parts of the frame. Since the entrance for inserting the tape into the frame body (tape through hole) is provided substantially at the center of the upper frame of the frame body, the strength of the frame body can be made equal between the left and right sides.

[0013] That is, since the shock-absorbing portions (buffer arms) at the rear of the shock-absorbing device are provided on the left and right, when the beveled hook hits the right side of the collision portion, first, the shock-absorbing arm of the right shock-absorbing portion. Is deformed by collision energy. As a result, while the collision portion retreats, its surface gradually becomes parallel to the surface of the hook, and when the surface becomes parallel, the shock absorbing arm of the left shock absorbing portion also receives the collision energy, and the shock shock absorbing member on both the left and right sides. The cushioning arm of the part deforms by receiving the collision energy of the hook while deforming.

[0014]

【Example】

 FIG. 1 is a top view of a shock absorber according to the present invention. FIG. 1 is a top view of the shock absorber according to the present invention, 1 is the shock absorber, and 2 is a through hole 8 through which a tape 16 passes. And 21 is a rear part of the frame 2. Reference numeral 3 denotes an impact buffer for alleviating the collision energy of the hook 17, 4 denotes a base of the impact buffer 3, 5 denotes a buffer arm projecting from the base 4, and 6 denotes a gap provided in the upper frame 22 of the frame 2. This is a gap at the entrance when the tape 16 is passed through the tape through hole 8 of the frame 2. Reference numeral 7 denotes a collision portion where the hook 17 collides.

FIG. 2 is a top view of a shock absorber showing another example, in which two bases 4 are provided at the rear portion 21 of the frame 2, and the shock absorbing arms 5 project from the respective bases 4. Due to the deformation of 5, the collision energy of the hook 17 is received and reduced. FIG. 3 is a rear view of the shock absorber according to the present invention, and FIG. 4 is a front view of the shock absorber according to the present invention.

FIG. 5 is a view showing a shock absorber installed inside the tape entrance, 9 is a tape measure half case, 10 is a tape measure front wall, 11 is a tape entrance, and 12 is a winding spring 14 of the tape 16. The axis of the rotating drum 13 to be installed, 15 is the winding drum of the rotating drum 13 around which the tape 16 is wound, 16 is the measuring tape with a scale mark, and 17 is the foot provided at the tip of the tape 16. It is.

As described above, since the shock absorbing portion 3 (the shock absorbing arm 5) is provided on the left and right, when the slanted hook 17 hits the right side of the collision portion 7, first, the right shock absorbing portion 3 is provided. The shock absorbing arm 5 receives the collision energy and is deformed. As a result, while the collision portion 7 retreats, its surface gradually becomes parallel to the surface of the hook 17, and when the surface becomes parallel, the shock absorbing arm 5 of the left shock absorbing portion 3 also receives the collision energy, and Thus, while the shock absorbing arms 5 of the shock absorbing portions 3 on both the left and right sides are deformed, the impact energy of the hook 17 is received and relieved.

[0018]

【effect】

 Since the tape measure shock absorber of the present invention has the above structure, even if the hook at the tip of the tape collides obliquely with the shock absorber, the collision part of the shock absorber immediately follows the hook position and collides. Since the energy can be reduced, it is possible to prevent the breakage of the hook and the shock absorber.

Further, the structure is simple and can be formed by integral molding using a resin or the like, so that a buffer device can be manufactured at a low cost. The tape measure can be provided at low cost.

Furthermore, since the shock at the time of completion of the tape winding is reduced, the tape measure does not drop due to the shock, so that the measuring work can be performed at a high place with a sense of security, and the safety of the secondary disaster can be improved. It can also improve performance.

[Brief description of the drawings]

FIG. 1 is a top view of a shock absorber according to the present invention.

FIG. 2 is a top view of a shock absorber showing another example.

FIG. 3 is a rear view of the shock absorber according to the present invention.

FIG. 4 is a front view of the shock absorber according to the present invention.

FIG. 5 is a view showing a shock absorber installed inside a tape entrance.

[Explanation of symbols]

1-buffer, 2-frame, 21-rear, 22-upper, 3
-Shock buffer, 4-base, 5-buffer arm, 6-gap,
7-collision part, 8-tape through hole, 9-half case, 10
-Front wall, 11-tape entrance, 12-shaft, 13-rotating drum, 14-take-up spring, 15-winding drum, 16-tape,
17-hook

Claims (4)

[Utility model registration claims] 1. A tape measure in which a rotary drum containing a tape take-up spring is rotatably mounted on a shaft of an inner side wall of a case. Wherein each of the shock-absorbing portions individually buffers an impact. 2. A shock-absorbing device for a tape measure according to claim 1, wherein a base portion of the shock-absorbing portion is provided substantially at the center of a rear portion of the frame, and a shock-absorbing arm projects right and left from the base portion. 3. The tape measure buffer device according to claim 1, wherein an upper frame of the frame body through which the tape passes is cut substantially at the center, and a gap having an appropriate width is provided therein. 4. A tape measure in which a rotary drum containing a tape take-up spring is rotatably mounted on a shaft of an inner wall of a case. The shock absorber arm extends right and left from its base, and the upper frame of the frame is cut at almost the center to provide a gap of an appropriate width. Tape measure buffer device