JPH0741402U - Convex rule - Google Patents

Abstract

(57) [Abstract] [Purpose] To reduce the occurrence of abnormal noise during drawing and winding of the scaled tape that occurs during the winding operation in the manufacturing process of convex rules, and to smoothly pull out and wind up the scaled tape. [Structure] A trapezoidal space 3 between the inner side surfaces of the drum 1 in which the graduated tape is wound and the both side surfaces of the tape winding spring chamber 2
To provide.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a convex rule (tape measure) with which a graduated tape can be smoothly pulled out and wound.

[0002]

[Prior art]

 The conventional convex rule was made flat without any space between both inner sides of the tape winding drum and both sides of the tape winding spring chamber.

[0003]

[Problems to be solved by the device]

 Conventionally, in the winding operation in the manufacturing process, it is difficult to bend the tape winding spring at a right angle when starting to wind it by sandwiching the tape winding spring tip with the notch of the case shaft. When the tape is loosened, it meanders near the shaft and hits the side of the tape winding drum, which may cause an abnormal noise when the scaled tape is taken in and out, or a defective product in which the scaled tape cannot be smoothly taken in and out easily occurs. I had to readjust each time.

[0004]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention has a structure in which a graduated tape is wound to form a space 3 between both inner side surfaces of a drum 1 and both side surfaces of a tape winding spring chamber 2.

[0005]

[Work]

 Even if the tape winding spring is slackened (the tape with scale is in the case) and the portion near the axis of the tape winding spring meanders, the space 3 provided on both inner side surfaces of the tape winding drum 1 The tape take-up spring is less likely to hit the side surface, making it possible to reduce the generation of abnormal noise when the scaled tape is pulled out and wound, and to smoothly pull out and wind the scaled tape.

[0006]

【Example】

 FIG. 1 is a front view showing a part of the rule of the present invention in a sectional view, and FIG. 2 is a side view showing a part of the same broken away. In FIGS. 1 and 2, 6 is a case, 1 is a tape winding drum assembled inside thereof, 2 is a tape winding spring chamber, 4 is a tape winding spring, and 5 is a spring for winding the tape winding drum 1 on the tape winding drum 1. It is a graduated tape. In this embodiment, a trapezoidal space 3 is provided between both inner side surfaces of the tape winding drum 1 and both side surfaces of the tape winding spring chamber 2.

By providing the trapezoidal space 3 in this way, in the winding operation of the tape winding spring and the graduated tape in the manufacturing process of the convex rule, the winding angle of the leading end of the tape winding spring is not enough to cause the tape winding spring to meander. It is possible to reduce the generation of abnormal noise that occurs when the scaled tape is taken in and out, and it is possible to smoothly take in and out the scaled tape.

[0008]

[Effect of device]

 As described above, according to the present invention, since the graduated tape is provided with the spaces 3 between both inner side surfaces of the drum 1 and both side surfaces of the tape winding spring chamber 2, the winding operation step in the manufacturing process of the convex rule is performed. It is possible to eliminate the problems such as pulling out the scaled tape, defective winding, and abnormal noise.

[Brief description of drawings]

FIG. 1 is a front view, partly in section, showing the configuration of an embodiment of the rule of the present invention.

FIG. 2 is a side view of the same, with a part thereof broken away.

[Explanation of symbols]

 1 Tape winding drum 2 Tape winding spring chamber 3 (trapezoidal) space

Claims (1)

[Scope of utility model registration request] 1. A drum (1) containing a graduated tape.
A convex rule in which a space (3) is provided between both inner side surfaces of the tape and both side surfaces of the tape winding spring chamber (2).