JPH037191Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to an eraser holder that allows the eraser to be freely taken in and out of the barrel.

(Prior art) Conventionally, a slit is formed in the axial direction of a barrel, and a number of recesses are sequentially formed on the side of the slit, an eraser is fixed to the tip of a slider that slides inside the barrel, and a knob attached to the slider is inserted into the slit. There is a known eraser holder in which a chevron-shaped leaf spring with a peak is inserted into the slider, the top of the leaf spring protrudes from a hole on the top surface of the slider, and is engaged with a recess in the shaft cylinder. .

(Problem to be solved by the invention) However, in the eraser holder mentioned above, the top of the leaf spring and the recess of the shaft tube are in a semi-engaged state, so while the slider can be slid with a relatively weak force, it does not protrude. There was a problem in that the slider would slide if a strong erase operation was performed using the eraser.

(Means for solving the problem) The present invention devises the shape and position of the leaf spring so that when the knob is lightly pressed, it is in a semi-engaged state, and when the knob is not pressed, it is in an engaged state. Therefore, when the eraser is projected and stored, the eraser can be slid with a weak force, and when the eraser is erased, the eraser is prevented from sinking in, thereby solving the conventional problems.

(Example) An example of the present invention will be described below with reference to the accompanying drawings. Reference numeral 1 denotes a shaft cylinder, in which a slit 2 is formed in the axial direction, and a number of recesses 2a are sequentially formed on the side surface of the slit 2. Reference numeral 3 has an eraser 4 fixed to the tip, and a hole 3a and a hole 3.
b, and is slidably disposed within the shaft tube 1. Reference numeral 5 denotes a knob having a leg 5a, which is inserted through the slit 2 into the hole 3b of the slider 3 so as to be slidable in the axial direction. Reference numeral 8 indicates a top portion 6 consisting of a head portion 6a having a curved surface and a pair of neck portions 6b vertically connected to the head portion 6a, and a pair of legs having a thick portion 7a and a thin portion 7b. The leaf spring 8 is housed in the slider 3 such that the top part 6 protrudes from the hole 3a of the slider 3, and the top part 6 is located in the recess 2.
It is fitted into the recess 2a so that only the head 6a of the top 6 protrudes from the top 6, and the leg 5a of the knob 5 is in contact with the thick part 7a, and the knob 5 is slightly lifted from the barrel 1. They are arranged as if going up.

Note that various materials such as resin and metal can be used for the plate spring 8, but resin is preferable from the viewpoint of ease of molding.

(Function) Next, the function of the present invention will be explained. As shown in FIG. 3, when no force is applied to the knob 5, at least the neck portion 6b of the leaf spring 8, which is made of a vertical surface, is opposed to the recessed portion 2a. As a result, even if an axial force is applied to the slider 3, at least the vertical surface of the neck 6b and the vertical surface of the recess 2a abut, so the axial force is not converted into an axial force, and the leaf spring 8 The top part 6 of is not displaced in the axial direction. That is, it becomes an engaged state and prevents the slider 3 from sliding. Next, as shown in FIG. 4, when a force is applied to the knob 5, the leg 5a of the knob 5 is displaced in the axial direction, and a force is applied to the thick portion 7a of the leaf spring 8 in the axial direction. The thin portion 7b is bent and displaced in the axial direction of the top portion 6, and the head portion 6a of the plate spring 8, which is made of a curved surface, faces the recess portion 2a. As a result, when an axial force is applied to the slider 3, the curved surface of the head 6a comes into contact with the vertical surface of the recess 2a, so the axial force is easily converted into an axial force, and the leaf spring 8 The top portion 6 is displaced in the axial direction. That is, it becomes a semi-engaged state, and the slider 3 can slide.

(Effects of the invention) This invention forms a slit in the axial direction of the barrel, fixes an eraser to the tip of a slider that slides inside the barrel, and attaches the knob attached to the slider to an eraser holder that is made to protrude from the slit. At that,
A head made of a curved surface and a part connected perpendicularly to the head
A chevron-shaped leaf spring consisting of a top made of a pair of neck parts and a pair of legs having a thick part and a thin part is inserted into the slider, the top part is made to protrude from the hole on the top surface of the slider, and the slit is inserted. The thick part of the leaf spring is fitted into a number of recesses sequentially formed on the side surface from below so that only the head protrudes from the recesses, and the leg of the knob is slidably inserted into the hole of the slider in the axial direction. Since the knob is made to come into contact with the slit and slightly rise above the upper surface of the slit, the eraser can be slid with a weak force when protruding and storing, and is excellent in that it can prevent the eraser from sinking in when erasing characters.

[Brief explanation of the drawing]

FIG. 1 is a plan view of an embodiment of the present invention, FIG. 2 is a front sectional view, and FIGS. 3 and 4 are front sectional views of essential parts showing the operating state. 1... shaft cylinder, 2... slit, 2a... recess,
3...Slider, 3a...hole, 3b...hole, 4
...Eraser, 5...Knob, 5a...Legs, 6...
...top, 6a... head, 6b... neck, 7... leg, 7a... thick wall section, 7b... thin wall section, 8... leaf spring.

Claims (1)

[Scope of utility model registration request] In an eraser holder, a slit is formed in the axial direction of the barrel, an eraser is fixed to the tip of a slider that slides inside the barrel, and a knob attached to the slider is made to protrude from the slit. Insert into the slider a mountain-shaped leaf spring consisting of a top portion consisting of a pair of neck portions connected perpendicularly to the head portion, and a pair of leg portions having a thick wall portion and a thin wall portion; The top part is made to protrude from the hole on the top surface of the slider, and is fitted from below into a number of recesses sequentially formed on the side surface of the slit so that only the head part protrudes from the recesses, and the leg of the knob is slid into the hole of the slider in the axial direction. The eraser holder is inserted so that it can be inserted into contact with the thick part of the leaf spring, and the knob is slightly raised above the upper surface of the slit.