JPH0518736U - Shaft fastener - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention aims to precisely strike the shank of the scissors such as nippers when the shank of the blade is worn and the rotation of the shank is wobbled. Can be made equal between classes,
Moreover, it is an object of the present invention to provide a shaft fastener that enables the shaft tightening work to be performed only once, and further that can be swaged uniformly along the peripheral portion of the shaft portion. [Structure] A shaft tightening condition is constituted by a main body 1, a support plate 10, and a punch 15, and after adjusting a fixing position of the support plate 10, the shaft is inserted into an insertion hole 2 of the main body 1 and a blade portion 2 of scissors 20.
1 is fixed in position by the support plate 10,
Is slid in the insertion hole 2 to position the shaft portion 22 of the blade portion on the pedestal 6, the punch 15 is inserted into the vertical insertion hole 3, and a hammer or the like is struck to tighten the shaft.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a shaft fastener for tightening scissors such as nippers.

[0002]

[Prior Art]

 Frequent use of scissors such as nippers causes the shaft of the blades to wear and creates a gap between the contact surfaces of the shafts of a pair of blades, which causes wobbling in the rotation of the shafts, resulting in poor scissor cutting performance. to degrade. Therefore, in the past, scissors with deteriorated cutting performance were sometimes discarded. Further, in order to crimp the shaft portion of scissors, it has been hit with a hammer or with a punch along the circumference of the shaft portion.

[0003]

[Problems to be solved by the device]

 However, it is not economical to discard the scissors, and when hammering the scissors, the striking position becomes inaccurate. Rotation becomes uneven. Furthermore, when punching along the circumference of the shaft, the shaft cannot be swaged uniformly because it is punched multiple times, resulting in uneven rotation of the shaft when using scissors, and swaging. There is a problem that the work cannot be completed once.

[0004]

[Means for Solving the Problems]

 The shaft fastener according to the present invention has a support plate 10 for fixing the blade portion 21 of scissors 20, an insertion hole 2 for inserting the support plate 10 from the side, and a punch 15 for inserting the punch 15 from above. A main body 1 having a vertical insertion hole 3 and a pedestal 6 corresponding to the vertical insertion hole 3 immediately below the vertical insertion hole on the inner bottom surface of the insertion hole, and a punch for deforming and plasticizing the shaft portion 22 of the blade portion 21 at the tip. It comprises a punch 15 having a surface 16, and while supporting the blade portion 21 of the scissors 20 by the support plate, the shaft portion 22 of the blade portion 21 is fixed on the receiving table 6 and is punched by the punch 15 to tighten the shaft. It is characterized by that.

[0005]

[Action]

 In the shaft support of the present invention, the support plate 10 is inserted into the insertion hole 2 of the main body 1 and the blade portion 21 of the scissors 20 is fixed to the support plate 10 in position. Then, the support plate 10 is slid in the insertion hole 2 so that the shaft portion 22 of the blade portion 21 is located on the pedestal 6, and the punch 15 is inserted into the vertical insertion hole 3 and then hammered. Then, the punch surface 16 is used to tighten the shaft.

[0006]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, the main body 1 has a substantially flat plate-shaped insertion hole 2 for inserting the support plate 10 in the horizontal direction, and the vertical direction from the upper surface of the main body 1 to the insertion hole 2 in the vertical direction. An insertion hole 3 is provided. Further, from the upper end of the main body 1 to the inside of the insertion hole 2, a screw hole 4 for inserting a cap screw 5 for pressing the inserted support plate 10 is provided in the vertical direction, and the screw hole 4 is pressed into the screw hole 4. 5 is pivotally supported. Further, a pedestal 6 having substantially the same size as the vertical insertion hole 3 is provided at a position directly below the vertical insertion hole on the bottom surface of the insertion hole 2 so that the driving can be performed more accurately from the top and bottom when driving. ..

The support plate 10 has a substantially flat plate shape, and is provided with a substantially V-shaped notch 11 that faces the blade of scissors such as nippers for tightening the shaft, and the side wall of the notch 11 is provided. A screw groove for pivotally supporting the holding screw 12 is opened, and the holding screw 12 is pivotally supported in this screw groove. The holding screw 12 is for fixing the position of the blade portion of scissors such as nippers, and is adjusted so that the tip of the blade portion of the scissors aligns with the position of the tip of the cutout portion 11. If it is fixed by the holding plate 10, the blade of scissors can be fixed at the center position. The support plate 10 has left and right upper and lower end portions cut away to facilitate insertion into the insertion hole. The support plate 10 can be inserted into the insertion hole 2 of the main body, and the inside 2 of the insertion hole can be slid.

Next, the punch 15 has a rod-like shape with a circular cross section, and the tip end thereof has a chrysanthemum shape with uneven surfaces arranged in a ring shape, as shown in FIG.

Next, a usage state of the shaft fastener will be described. Scissors 20 such as nippers for tightening the shaft are arranged in the notch 11 of the support plate 10 as shown in FIG. When arranging, make sure that the tip of the blade 21 of the scissors 20 is aligned with the position of the tip of the notch 11, and then rotate the pinching screws 12 from the left and right to pinch the scissors 20 so that the state shown in FIG. 2 is obtained. To Then, the blade portion 21 of the scissors 20 is removed from the support plate 10 with the holding screw 12 left as it is. In this way, the support plate 10 can be inserted into the insertion hole 2 of the main body 1 and then placed again in the notch 11 of the support plate 10 so that the blade portion 21 of the scissors 20 is moved to the left and right. Can be placed in the center position.

Next, as shown in FIG. 3, the support plate 10 is inserted into the insertion hole 2 from the rear of the main body portion 1, and the scissors blade portion 21 is arranged in the cutout portion 11 of the support plate 10 from the front. Then, the support plate 10 is slid back and forth so that the shaft portion 22 of the scissors 20 is accurately positioned on the pedestal 6. The position can be confirmed by observing from the vertical insertion hole 3 of the main body 1 so that the shaft portion 22 comes to the center of the vertical insertion hole 3. After the position of the support plate 10 is determined as described above, the support plate 10 is pressed by the pair of pressing screws 5 to fix the position of the scissors 20. Next, the punch 15 is inserted into the vertical insertion hole 3 so that the tip of the punch 15 contacts the shaft portion 22 of the scissors 20, and the rear end of the punch 15 is hammered to tighten the shaft. As shown in FIG. 4, the punch surface 16 at the tip portion of the punch 15 has a chrysanthemum shape in which concave and convex surfaces are arranged in a ring shape. Therefore, as shown in FIG. It can be evenly driven, and can be caulked uniformly along the circumference of the shaft.

[0011]

[Effect of the device]

 Since the present invention is configured as described above, the following effects can be obtained. (1) Since the center position can be fixed with the holding screw of the support plate, and the front-back position can be adjusted by sliding the support plate, the shaft of the blade of scissors can be accurately inserted into the vertical insertion hole and It can be positioned at the center of the pedestal, and the shaft can be accurately struck. Therefore, the degree of crimping can be made equal among the scissors. (2) The shaft of the blade is placed in the center of the vertical insertion hole, and the punch is used to tighten the shaft, so the shaft can be tightened only once. Moreover, since the caulking can be performed uniformly along the peripheral portion of the shaft, the rotation of the shaft does not become uneven when the scissors are used. (3) Scissors that cause wobbling of the shaft part can be used again after the shaft is tightened, so economic efficiency is not impaired.

[Brief description of drawings]

FIG. 1 is an overall perspective view showing a shaft fastening device.

FIG. 2 is a perspective view showing a positional relationship between a support plate and scissors.

FIG. 3 is a perspective view showing a state at the time of hitting.

FIG. 4 is a front view showing a tip of a punch.

FIG. 5 is a cross-sectional view of an essential part showing a state at the time of driving.

[Explanation of symbols]

 1 Main Body 2 Insertion Hole 3 Vertical Insertion Hole 6 Cradle 10 Support Plate 15 Punch 16 Punch Surface 20 Scissors 21 Blade 22 Shaft

Claims (1)

[Scope of utility model registration request] 1. A support plate (10) for fixing the position of a blade (21) of scissors (20), and the support plate (10).
Insertion hole (2) and punch (1) for inserting the
5) has a vertical insertion hole (3) for inserting from above,
The main body part (1) having a pedestal (6) corresponding to the vertical insertion hole (3) immediately below the vertical insertion hole on the inner bottom surface of the insertion hole, and the shaft part (22) of the blade part (21) at the tip are deformed by plasticity. A punch (15) having a punch surface (16) for allowing scissors (2
While supporting the blade part (21) of (0) with the support plate, the shaft part (22) of the blade part (21) is fixed on the pedestal (6),
A shaft fastener characterized in that a punch (15) is used to tighten the shaft.