KR100463922B1 - Elastically operated eraser apparatus and writing instrument with the same - Google Patents

Abstract

The present invention relates to an elastic penetrating eraser device and a writing instrument to which it is made to use the eraser more conveniently using a spring insertion structure. The present invention is formed in a longitudinal direction and has a cylindrical housing 10 having a multi-step locking jaw; A cylindrical inner frame having a pair of slit-shaped cutouts 22 facing each other and a large diameter end portion 24 having a predetermined thickness inserted therein through one of the openings 11b of the housing 10. 20); An elastic member 30 inserted therein through one opening 21b of the inner frame 20; The housing 10 is inserted through the body 42 inserted into the inner frame 20 and fitted into the upper end 31b of the elastic member 30 and the pair of cutouts 22 of the inner frame 20. A catching piece 40 having a pair of first arms 44 each extending to the jaw 12; And an eraser 50 inserted into the inner frame 20 and reciprocating in the longitudinal direction in contact with the upper end portion 41b of the locking piece 40 that is moved forward and backward along the longitudinal direction of the locking step 12 of the housing 10. An elastic wedge-type eraser device and a writing instrument with the eraser device are provided.

Description

ELASTICLY OPERATED ERASER APPARATUS AND WRITING INSTRUMENT WITH THE SAME}

The present invention relates to an elastic retractable eraser device and a writing instrument to which it is attached, and more particularly, an elastic retractable eraser device and an elastic retractable eraser that can easily operate the eraser using an elastic member such as a spring. It relates to a writing instrument attached to the device.

In general, the eraser device is designed to be easy to carry or store while making the use of the eraser convenient.

As such a conventional eraser device, for example, a 'pull-out eraser' of Korean Registered Utility Model No. 256702 (Nov. 27, 2001) is disclosed.

The conventional pull-out eraser includes a cylindrical casing 3 as shown in Figs. 1A and 1B; It is coupled to the one end of the shaft (5) mounted inside the casing (3) through one end of the casing (3) and becomes a push bar for knocking the shaft, and the clip (4A) for hanging the removable eraser in the pocket of clothes A knocking cap 4 provided at each of an outer surface and an inner bottom of a bar-type push protrusion for pushing one end surface of the eraser; A grip (2) surrounding the outer circumferential surface of the other end of the casing; One end outer peripheral surface of the casing is coupled to the inner peripheral surface of the other end of the casing and consists of a guide cap (1) for holding and guiding the eraser (E), which is advanced through the hollow of the shaft, from the inner bottom of the knocking cap (4). It is configured to include; push projection (4B) having a diameter smaller than the hollow inner diameter of the shaft body (5B).

The pressing protrusion 4B of the knocking cap 4 inserts the eraser E into the shaft body 5B mounted inside the casing 3 by hand, so that the tip portions of the eraser and the shaft body 5B coincide. When the knocking cap 4 is fitted to the distal end of the shaft body in the closed state, the other distal end of the eraser is formed on the inner circumferential surface of the guide cap 1 and functions to snap into the bite portion 1A1 which serves to bite the eraser, The eraser can be moved forward by knocking the shaft from the initial stage of charging.

As described above, in the conventional pull-out eraser, when the user presses the knocking cap 4 to advance the eraser E, the eraser E is bitten by the bite portion 1A1 formed on the blade 1A of the guide cap 1. The knocking cap 4 is configured to protrude and restore to an initial state by a restoring force of a spring that protrudes by a predetermined length and is then fixed to the inner surface of the casing 3 and inserted through the shaft guide 5A.

Meanwhile, the above-described conventional pull-out eraser is convenient to store or carry, but it is difficult for the user to project the eraser at a time exactly as desired by pressing the knocking cap 4 to which the restoring force of the spring acts. In addition, if the eraser protrudes for a long time, the eraser may easily break when using the eraser.

In addition, the above-described conventional drawer eraser is made by applying the structure of a general mechanical pencil. The eraser device is made by replacing a pencil lead with a bar-shaped eraser having a circular cross section, but the eraser is convenient. It is not configured to be attached to a mechanical pencil. Therefore, as an eraser device attached to a conventional mechanical pencil, a structure widely used for children's crayons or colored pencils, such as the above-mentioned rotary eraser device, is mainly used as a spiral rotating structure or a screwing structure to change the rotational movement into a linear movement. A large number of conventional general eraser apparatuses that have been raised and attached are used.

Accordingly, the present invention is directed to solving the above-mentioned conventional problems and providing an eraser device that is more convenient to use and easy to attach to a mechanical pencil, and an object of the present invention is to protrude an eraser by elastic action of an elastic member. The present invention provides an elastic penetrating eraser device and a writing instrument with such an eraser device, which are very convenient to use and can be attached and used with a general mechanical pencil very easily.

1A and 1B are a perspective view and a cross-sectional view showing an example of a conventional eraser device;

2 is an exploded perspective view of an elastic wedge eraser device according to an embodiment of the present invention;

3 is a perspective view showing a state in which the elastic member, the engaging piece and the eraser are mounted in the inner frame in the apparatus of FIG.

4A is a perspective view showing a state in which the device of FIG. 2 is fully assembled;

4B is a cross-sectional view schematically showing a plane cut through a center along line I-I in the apparatus of FIG. 4A;

5A is a front view of the housing of the device of FIG. 2, FIG.

Figure 5b is a front view showing a modification of the housing according to an embodiment of the present invention,

6a and 6b are a perspective view and a front view showing a modified example of the engaging piece in the device according to an embodiment of the present invention,

7 is a perspective view of a writing instrument with an eraser device according to this embodiment of the present invention;

8 is a perspective view showing a state in which the eraser device is coupled to the writing instrument body in the writing instrument of FIG.

FIG. 9 is a sectional view schematically showing a plane obtained by cutting the writing instrument of FIG. 8 along a II-II line in the center line direction. FIG.

Explanation of symbols on the main parts of the drawings

10 housing 20 internal frame

22: incision 24: large diameter end

30: elastic member 40: locking piece

42: body 44: first arm

46: second arm 50: eraser

100: eraser device 110: writing instrument body

120: push piece 122: stopper

The present invention to achieve the above object is a cylindrical housing having a multi-stage locking jaw formed in the longitudinal direction; A cylindrical inner frame mounted inside the housing through one opening of the housing and having a pair of slit-shaped cutouts facing each other and a large diameter end portion having a predetermined thickness; An elastic member mounted therein through one opening of the inner frame; A locking piece mounted in the inner frame and having a body fitted to an upper end of the elastic member and a pair of first arms respectively extending to a locking jaw of the housing through a pair of cutouts of the inner frame; ; And an eraser mounted in the inner frame and formed of an eraser reciprocating in the longitudinal direction in contact with an upper end of the engaging piece moving forward and backward along the longitudinal direction of the locking step of the housing.

In the present invention, the latching jaw is preferably formed so that a plurality of protrusions alternately protrude in a comb shape at regular intervals on both sides of the opening of a predetermined length and width formed in the longitudinal direction of the housing.

In the present invention, the locking piece may further include a pair of second arms extending in parallel in a direction orthogonal to the first arm to engage the distal end of the eraser.

In the present invention, the elastic member is made of a coil-shaped spring.

In another aspect, the present invention provides a writing instrument with an eraser device, comprising: a writing instrument body with a core protruding from a lower portion thereof; A pressing piece made of a stopper portion blocking an upper opening of the writing instrument body and a cylindrical body extending from the closure portion, the pressing piece being rotatably coupled to the upper end of the writing instrument body; And it provides a writing instrument comprising an eraser device according to the invention that is inserted through the opening formed in the upper end of the body of the pressing piece.

In the writing instrument with an eraser device according to the present invention, the pressing piece has a convex portion formed inside the cylindrical body and a coupling groove formed in the upper opening of the cylindrical body, and the housing of the eraser device has a convex portion of the pressing piece. It is preferable to further include a concave portion formed on its lower side to correspond to the engaging groove, and an engaging projection extending in the longitudinal direction on the outer surface of the other end thereof so as to correspond to the engaging groove.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First, with reference to FIGS. 2 to 6b will be described elastic resilient eraser device according to an embodiment of the present invention. Figure 2 is an exploded perspective view of the elastic wandering eraser device according to an embodiment of the present invention, Figure 3 is a perspective view showing a state in which the elastic member, the engaging piece and the eraser mounted in the inner frame in the device of Figure 2, 4A is a perspective view showing a state in which the apparatus of FIG. 2 is fully assembled, and FIG. 4B is a cross-sectional view schematically showing a plane cut through a center along the line I-I of the apparatus of FIG. 4A. FIG. 5A is a front view of the housing of the device of FIG. 2, and FIG. 5B is a front view showing a variant of the housing according to an embodiment of the invention. 6A and 6B are a perspective view and a front view showing an enlarged modified example of the locking piece in the device according to the embodiment of the present invention.

An elastic wedge-type eraser device according to an embodiment of the present invention has a housing 10, an inner frame 20, an elastic member 30, a locking piece 40 and an eraser 50 as shown in FIGS. It is composed of One of the features of the present invention including such a configuration is that the eraser is a push-extrusion method (by pressing one end of the device to protrude the eraser mounted therein) or a rotation-protrusion method (turning one end of the device in one direction and the eraser mounted therein). It does not have a passive structure (such as a way to protrude)), and the eraser device is configured to protrude substantially automatically by the elastic member (30).

Specifically, the housing 10 is made of a cylindrical shape in which one end 11a is substantially blocked and the other end 11b is formed as an opening. In addition, the housing 10 is provided with a multi-stage latching jaw (12) long and winding in the longitudinal direction. The catching jaw 12 is formed so that the first arm 44 of the catching piece 40, which will be described in more detail below, penetrates from the inside of the housing 10 to the outside in a substantially zigzag form (see FIG. 5A). .

In addition, although not shown in the drawings, the housing 10 may further include a clip that makes it easy to carry the eraser device on the outer surface thereof, a grip that makes it easy to hold the eraser device, and the like. .

The inner frame 20 is formed in a cylindrical shape having a predetermined diameter so as to fit snugly inside the housing 10. The one end 21a is substantially blocked and the other end 21b is formed as an opening. The inner frame 20 also has at least one pair of cutouts 22 in a slit shape on its side. The cutout 22 is formed long in a portion except for both ends in the longitudinal direction of the inner frame 20 and penetrates the inside and the outside of the inner frame 20.

In addition, the inner frame 20 has a large diameter end portion 24 having a larger diameter than other portions of the inner frame 20 at the edge of the opening of the other end portion 21b. The large diameter end portion 24 is in contact with the other end portion 11b of the opening side of the housing 10 when the inner frame 20 is inserted into the housing 10 so that the inner frame 20 is completely inserted into the housing 10. To prevent them. In addition, such a large diameter end portion 24 is exposed to the outside of the eraser device can be appropriately used when the user moves the inner frame 20 to the left or right by a predetermined width. In addition, small projections 26 of a suitable shape are formed on the surface of the large-diameter end portion 24 of the inner frame 20. These projections 26 allow the user to partially rotate the inner frame 20 to a predetermined width. It is convenient to do this. Meanwhile, in FIG. 2, although the two pairs of cutouts 22 are formed long along the longitudinal direction of the body in the inner frame 20 in four directions of approximately east, west, north and south in a direction perpendicular to the central axis, in the present embodiment, the inner frame Instead of the two pairs of cutouts 22, only a pair of cutouts may be formed to correspond to the shape of the locking piece 40.

The elastic member 30 is a spring of a suitable shape and is first inserted into the inner frame 20 and is locked to the inner frame 20 by the locking piece 40. That is, the elastic member 30 is confined between the inner bottom surface of the inner frame 20 and the locking piece 40 and exerts an elastic force toward the floating locking piece 40 from the fixed bottom surface. The elastic member 30 is inserted and disposed as it is without installing a separate fixing portion or support for fixing or supporting the elastic member 30 in the inner frame 20. Meanwhile, the elastic member 30 includes other types of elastic members such as, for example, sponge-type rubber, in addition to the spring used in the present embodiment, and a general elastic member having a predetermined shape and elastic force can be appropriately selected and used. .

The catching piece 40 extends to be symmetrically in the shape of an 'b' from the body 42 and the body 42 fitted to the upper end 31b of the elastic member 30, and the distal end 47 of the inner frame. And a pair of first arms 44 extending through the pair of cutouts 22 of the housing 20 to the engaging jaw 12 of the housing 10, respectively. The locking piece 40 is inserted into the inner frame 20 after the elastic member 30 is inserted into the inner frame 20. In addition, the locking piece 40 is disposed to be fixed to the locking jaw 12 of the housing 10 through the pair of first arms 44 while continuously receiving the elastic force of the elastic member 30.

The eraser 50 includes, for example, a general eraser used to erase writing traces of the graphite core, is formed in a substantially circular bar shape, and the elastic member 30 and the catching piece 40 are first placed in the inner frame 20. The inserts are sequentially inserted and then inserted into the inner frame 20. By such a configuration, the eraser 50 moves to protrude in the longitudinal direction in contact with the upper end portion 41b of the engaging piece 40 which is advanced along the longitudinal direction of the housing 10.

On the other hand, when the eraser 50 is to be inserted back into the eraser device, one end 51b of the eraser 50 may be pressed by hand or pressed into a wall surface or a desk surface. Specifically, when a force is applied from the other end 51b of the eraser 50 to the one end 51a of the eraser 50, a force is applied to the engaging piece 40 in contact with the one end 51a of the eraser 50. . Then, the engaging piece 40 which has been subjected to the elastic force from the elastic member 30 has a pair of 'A' shaped first arms 44 supported by the engaging jaw 12 by the force in both directions. As it is collected inward, it is released from the locking step 12 and moved to the inside of the inner frame 20. By this process, the eraser 50 is simply inserted into the eraser device.

Referring to FIG. 5A, the locking jaw 12 of the housing 10 will be described in more detail. The locking jaw 12 has a plurality of protrusions combed at regular intervals on both sides of an opening having a predetermined length and width formed in the longitudinal direction of the housing. It is formed to be staggered in shape. The locking jaw 12 is the elastic member 30 when the user reciprocates the inner frame 20 with respect to the housing 10 or the housing 10 within a width range of approximately 10-30 degrees in the left and right directions. The eraser 50 acts to advance in the longitudinal direction outward by a predetermined length by the elastic force of

In addition, the locking step 12 may have a variety of modifications in addition to the configuration described in an embodiment of the present invention. For example, the locking step 12a as shown in FIG. 5B may be used. The latching jaw 12a has a predetermined length by the elastic force of the elastic member 30 when the inner frame 20 is rotated by a predetermined width with respect to the housing 10 or the housing 10. When the protrusion is rotated again by a predetermined width in the opposite direction, the locking piece 40 is fixed to act to stop the protrusion of the eraser 50.

In addition, when inserting the eraser 50 in the eraser device provided with the locking jaw (12a) as in the case of the above-described embodiment by pressing with a finger or a desk surface and the like inserting the locking piece 40 is the housing ( 10) and then the eraser 50 is pushed in and the locking piece 40 is fixed to the locking step 12a.

On the other hand, in the latching jaw 12 of the eraser device described above, the eraser 50 has a predetermined width in the longitudinal direction by a gap between the locking jaw 12 and the first arm 44 of the locking piece 40. You will have room for length. This gap is appropriately adjusted so that when the user uses the eraser, the eraser 50 is pushed inward to feel discomfort. In the case of the locking step 12a described in the modified example, the gap between the projections of the locking step 12 and the thickness of the first arm 44 of the locking piece 40 is appropriately fitted so that the gap described above does not occur. Is configured.

In addition, the locking piece 40 may have a variety of modifications in addition to the configuration described in an embodiment of the present invention. For example, a catching piece 40a such as shown in FIGS. 6A and 6B may be used. The locking piece 40a is the same as the locking piece 40 described above except for the second arm 46. The second arm 46 extends in parallel from the side surface of the engaging piece 40a toward the eraser 50 and has a head portion 47 at its distal end. The head 47 of the second arm 46 is engaged with the one end 51a of the eraser 50 to prevent the eraser 50 from protruding during the protruding or insertion process of the eraser 50. The upper surface 41a of the locking piece 40a is in contact with the one end 51a of the eraser 50 and the lower end 41b is in contact with or fitted to the other end 31b of the elastic member 30.

Next, with reference to FIGS. 7 to 9, a writing instrument having an elastic wedge-type eraser device according to this embodiment of the present invention will be described. 7 is an exploded perspective view of the writing instrument with an eraser device according to this embodiment of the present invention, Figure 8 is a perspective view showing a state in which the eraser device is separated in the writing instrument of Figure 7, Figure 9 is a writing instrument of Figure 8 Is a sectional view schematically showing a plane cut along a line II-II in the direction of a center line. On the other hand, in the following detailed description will be omitted for the components substantially the same as the components described in the above embodiment.

The writing instrument with an elastic wedge-type eraser device according to this embodiment of the present invention has a housing 10, an inner frame 20, an elastic member 30, and a locking piece 40 as shown in FIGS. 7 to 9. And an eraser device 100 composed of an eraser 50, a writing instrument body 110, and a pressing piece 120.

Specifically, the housing 10 is substantially the same as the housing 10 of the above-described embodiment except for the coupling protrusion 14 and the recessed portion 16. Coupling protrusion 14 functions so that the eraser device 100 can be more firmly coupled with the pressing piece 120 or the writing instrument body 110 which will be described in more detail below. The coupling protrusion 14 is formed to engage with the coupling groove 126 formed in the upper opening 121b of the cylindrical body 124 of the pressing piece 120. The recess 16 functions similarly to the engaging protrusion 14 so that the eraser device 100 can be more firmly coupled with the pressing piece 120 or the writing instrument body 110. The concave portion 16 is formed to engage the inner convex portion 125 of the pressing piece 120. Of course, the concave portion 16 of the housing 10a is made in a shape corresponding to the inner convex portion 125 of the pressing piece 120, and is formed in the housing 10a and the pressing piece 120, respectively. The concave portion 16 and the convex portion 125 may be formed in the shape changed from each other. As described above, when the eraser device 100 of the present invention is attached to the writing instrument, the housing 10a of the eraser device 100 is appropriately coupled such as the engaging protrusion 14 or the recessed part 16 as in the case of the present embodiment. It is formed to further have a means.

The writing instrument body 110 includes a conventional mechanical pencil and the like. In general, a mechanical pencil is a lead replacement writing implement that mechanically penetrates the pencil lead. The structure can be broadly divided into knock type (spring push type), rotary type, and drop type. The mechanical pencil of the present invention generally operates a part of the main body, and uses a knock type to operate the spring to push the shim to fix it. The main principle of this method is the knob knock type for operating the knob of the shaft head, the side knock type for operating the knob in the center of the shaft, the cap slide type for sliding the cap by sliding the cap, and knocking both the writing part and the core. There are double knocks for entering and exiting.

Although not shown in the drawings, the writing instrument body 110 of the present invention includes a rotary mechanical pencil and the like, in addition to the knock mechanical pencil mentioned above. The rotary type comes out of the spiral pipe along the core, and there are single spiral type, cross spiral type (two colors), and end rotary type. In addition, the drop type is fixed to the appropriate length of the shim is called a red holder, or a drop pencil, and a drafting mechanical pencil with a thick shim.

For reference, briefly describing the shims used in the above-mentioned mechanical pencil, four types of core diameters of 0.3, 0.5, 0.7, and 0.9 mm are generally used, and hardness is 2B to 4H. Varies.

As such, the writing instrument body 110 according to this embodiment of the present invention is disposed inside the barrel containing a sharp core and coupled to a lower end of the barrel 114 and by a predetermined external force or method. It includes a general mechanical pencil having a dispensing means 116 for inducing the advance of the sharp shim (112). However, the writing instrument body 110 of the present invention is configured to further include a coupling means, for example, a pressing piece 120, installed on the upper end portion 111b side to allow the attachment of the eraser device 100.

The pressing piece 120 may be appropriately manufactured by modifying a portion such as a lid of a general mechanical pencil. For example, as shown in FIGS. 7 to 9, the pressing piece 120 has a stopper portion 122 coupled to the upper end portion 111b of the writing instrument body 110 to accommodate the eraser device 100. In order to have one end of the opening 121b is formed in a cylindrical shape.

In addition, the pressing piece 120 has a convex portion 125 formed in the cylindrical body 124 and the coupling groove 126 formed in the upper opening of the cylindrical body 124, this configuration is accommodated in the pressing piece 120 The eraser device 100 acts to be more firmly attached to the writing instrument body 110.

Corresponding to the configuration of the pressing piece 120 described above, the housing 10 of the eraser device 100 is a convex portion of the pressing piece 120 in addition to the configuration of the housing 10 of the eraser device 100 of one embodiment. A concave portion 16 formed at a lower side thereof to correspond to 125 and a coupling protrusion 14 extending in the longitudinal direction on the outer surface of the other end portion 11b so as to correspond to the engaging groove 126 of the pressing piece 120. It is configured to further have.

As described above, according to the present invention, since the eraser automatically protrudes by the elastic action of the elastic member, the eraser can be easily protruded, and thus the eraser can be more conveniently used.

In addition, since the eraser device, which is easy to use, can be easily attached to a general mechanical pencil, the eraser device can be provided with an elastic penetrating eraser device that is more convenient to use when the writing instrument is used.

Claims (6)

Cylindrical housing 10 having a multi-stage locking step 12 formed in the longitudinal direction; A cylindrical interior having at least one pair of slit-shaped cutouts 22 and a large diameter end portion 24 of a predetermined thickness that are inserted therein through one opening 11b of the housing 10. Frame 20; An elastic member 30 inserted therein through one opening 21b of the inner frame 20; The housing 42 is inserted into the inner frame 20 and inserted into the upper end portion 31b of the elastic member 30 and through a pair of cutouts 22 of the inner frame 20. A catching piece 40 having a pair of first arms 44 each extending to a catching jaw 12 of 10); And An eraser inserted into the inner frame 20 and reciprocating in the longitudinal direction in contact with the upper end portion 41b of the locking piece 40 that is moved forward and backward along the longitudinal direction of the locking step 12 of the housing 10. An elastic wedge-type eraser device, comprising (50). The method of claim 1, The latching jaw (12) is a retractable eraser device, characterized in that a plurality of protrusions are formed to be alternately protruding in a comb shape at regular intervals on both sides of the opening of a predetermined length and width formed in the longitudinal direction of the housing (10). The method of claim 1, The locking piece 40 further includes a pair of second arms 46 extending in parallel in a direction orthogonal to the first arm 44 to engage the distal end 51 a of the eraser 50. Elastic writhing eraser device, characterized in that. The method of claim 1, The elastic member 30 is elastic springing type eraser device, characterized in that the spring. Writing instrument body 110 protruding the seam 112 for writing in the lower portion; It consists of a stopper portion 122 blocking the top opening 111b of the writing instrument body 110 and a cylindrical body 124 extending from the closure portion 122, so as to be rotatable in the upper end of the writing instrument body 110 Push piece 120 is coupled; And An elastic appearance type, characterized in that it comprises the eraser device 100 of any one of claims 1 to 4 inserted through the opening 121b formed on the upper end of the body 124 of the pressing piece 120. Writing instruments with an eraser. The method of claim 5, The pressing piece 120 has a convex portion 125 formed in the cylindrical body 124 and a coupling groove 126 formed in the upper opening of the cylindrical body 124, The housing 10 of the eraser device 100 has a concave portion 16 formed at a lower side thereof to correspond to the convex portion 125 of the pressing piece 120 and the other to correspond to the coupling groove 126. And a coupling protrusion 14 extending in the longitudinal direction on the outer surface of the end portion 11b.