JP2000047802A - Input pen holding mechanism - Google Patents

Abstract

(57) [Problem] To provide an input pen holding mechanism capable of securely holding an input pen. An input pen holding mechanism according to the present invention includes an operation part (4a) protruding from an upper cabinet (5) and an elastic arm part (4b) extending obliquely into the storage part (3) from the operation part (4a).
And has a pen lock member 4 movable in the direction of inserting and removing the input pen 7, and fixes the position of the pen lock member 4 to the upper cabinet 5 when the pen lock member 4 moves in the direction of inserting the input pen 7. As a first means, a convex portion 4d of the pen lock member 4 and a concave portion 5d of the upper cabinet 5 to which the convex portion 4d fits are formed, and the position of the input pen 7 to the pen lock member 4 is fixed. As a second means, a projection 4c of the pen lock member 4 and a hole 7a of the input pen 7 into which the projection 4c is fitted are formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an input pen holding mechanism for holding an input pen inserted in a storage portion of an electronic device main body in a portable electronic device for inputting information by handwriting with an input pen such as an electronic organizer.

[0002]

2. Description of the Related Art An input pen holding mechanism disclosed in Japanese Patent Application No. 9-5938 will be described as a prior art. FIG.
FIG. 3 is a schematic configuration diagram of the input pen holding mechanism, showing a state where the input pen is stored and held in a storage section of the device main body. The lock member 21 includes a slide portion 211 and an arm portion 212.
2 is pushed into the back. As a result, the spring portion 211a provided on the slide portion 211 of the lock member 21
Is fitted in the recess 23 a on the back side formed in the electronic device main body 23.

The arm 212 of the lock member 21 is pushed up by a guide 23b formed on the electronic device main body 23, and the end of the arm 212 is lifted in a direction perpendicular to the direction in which the input pen 20 is inserted. At this end, an arc-shaped receiving rib 212a is provided.
It fits into the annular groove 20a formed at zero. In this way,
The input pen 20 is held in the storage unit 22.

[0004]

However, when the receiving rib 212a is fitted into the annular groove 20a of the input pen 20 as in the above-mentioned prior art, it is difficult to hold the input pen 20 reliably, and the electronic device receives an impact. For example, there is a possibility that the input pen 20 easily comes off.

[0005] The present invention has been made in view of the above problems, and has as its object to provide an input pen holding mechanism capable of reliably holding an input pen.

[0006]

According to one aspect of the present invention, there is provided an input pen holding mechanism for inserting an input pen for handwriting input of information into an electronic device into a storage portion of an electronic device body. An input pen holding mechanism for holding an input pen at a distance, comprising an operating portion protruding from the electronic device main body and an elastic arm portion extending obliquely from the operating portion into the storage portion and moving in the input pen inserting / removing direction. A possible pen lock member, first means for fixing the position of the pen lock member to the electronic device body when the pen lock member moves in the input pen insertion direction, and the pen lock member moves in the input pen insertion direction. And a second means for fixing the position of the input pen to the pen lock member when the input pen is inserted. It is formed on the side surface of the input pen and projecting protrusions the protrusion is characterized in that it consists hole to be fitted.

In the above configuration, the input pen is inserted into the storage section, and the operation section of the pen lock member protruding from the electronic device main body is operated to move the pen lock member in the input pen insertion direction. As a result, the pen lock member is fixed in position to the electronic device main body by the first means. Further, the projection of the pen lock member, which is the second means, fits into the hole of the input pen, and the input pen is fixed in position to the pen lock member. Therefore, the input pen is held in the storage section of the electronic device main body.

According to a second aspect of the present invention, there is provided the input pen holding mechanism according to the first aspect, wherein the pen lock member has a rectangular extending portion extending perpendicularly to the input pen insertion / removal direction. A first step portion is provided on a side surface of the input pen, the first step portion having a surface perpendicular to the input pen insertion / removal direction and facing the rear side of the storage portion. The first step portion is provided when the input pen is inserted. The surface of the step portion presses the side surface of the extending portion.

In the above configuration, when the input pen is inserted, the surface of the first step portion of the input pen contacts the side surface of the extending portion of the pen lock member and presses it, and the pen lock member is moved in the input pen insertion direction. Move. Further, when the user operates the operating portion of the pen lock member protruding from the electronic device main body to move the pen lock member in the input pen withdrawing direction, the side surface of the extending portion of the pen lock member becomes the first pen of the input pen. The input pen is moved in the withdrawal direction by contacting the surface of the step and pressing it.

According to a third aspect of the present invention, in the input pen holding mechanism according to the first or second aspect, the pen lock member has an arm portion extending obliquely downward from the operation portion. Means extending perpendicularly to the input pen insertion / removal direction from the electronic device main body and formed with a pin located closer to the insertion port side of the storage section than the arm section, and a surface facing the insertion port side of the storage section on the lower surface of the arm section. The input device is characterized in that the side surface of the pin is in contact with the surface of the second step when the input pen is inserted.

In the above configuration, when the input pen is inserted into the storage portion, the side surface of the pin comes into contact with the surface of the second step portion from the insertion opening side of the storage portion, so that the pen lock member is locked to the pin. Cannot be moved in the input pen withdrawal direction. Therefore,
The pen lock member is fixed in position to the electric device main body integrated with the pin. In addition, when the operation unit of the pen lock member is operated and moved in the input pen withdrawal direction to extract the input pen from the storage unit, the position of the pen lock member is fixed by the surface of the second stepped portion climbing over the pin. Will be resolved.

According to a fourth aspect of the present invention, there is provided an input pen holding mechanism according to the first or second aspect, wherein the pen lock member has an arm portion extending obliquely upward from the operation portion. An upper wall in the storage section of the main body is inclined so as to become lower toward the back side, and a first means includes a projection protruding above the tip of the arm section and a top wall in the storage section of the electronic apparatus main body. It is characterized by comprising a concave portion formed at the lowest position and fitted with the convex portion.

In the input pen holding mechanism having the above configuration, when the input pen is inserted into the storage section, the projection of the arm section fits into the recess of the upper wall in the storage section, and the pen lock member is connected to the main body of the electric device. The position is fixed. When the operating part of the pen lock member is operated and moved in the input pen withdrawal direction to pull out the input pen from the storage part, the convex part of the arm part is separated from the concave part of the upper wall in the storage part by the inclined upper wall. Slide. As a result, the tip of the arm moves upward, and the projection at the tip of the arm, which is the second means, comes off the hole of the input pen into which it is fitted.

[0014]

Embodiments of the present invention will be described with reference to the drawings. First, the input pen holding mechanism according to the first embodiment will be described. FIG. 1 is a front view of a portable electronic device such as an electronic organizer provided with an input pen holding mechanism of the present embodiment. An input / output unit 2 is provided on an upper surface of the electronic device main body 1. The input / output unit 2 includes a dot matrix type liquid crystal display unit and a transparent analog resistive film type tablet unit which can input and output information by writing with an input pen 7.

The input pen 7 is inserted from the insertion opening 3a on the side surface of the electronic device main body 1 into the storage section 3 formed inside the electronic device main body 1. Further, a pen lock member 4 provided in the storage section 3 is exposed from the slide section 1a on the upper surface of the electronic device main body 1.

FIG. 2 shows an input pen 7 used in this embodiment.
FIG. A hole 7a is formed in a side surface of the input pen 7.

FIGS. 3 and 4 are schematic structural views of the input pen holding mechanism showing a cross section taken along line AA in FIG. 1. FIG. 3 shows a state in which the input pen 7 is inserted, and FIG. Is drawn out. In the figure, the input pen 7 is in the left direction.
This is the insertion direction, and on the right side is an insertion port (not shown) of the storage unit 3.
(See FIG. 1). In FIG. 3, the electric device body 1
1 (see FIG. 1) is composed of an upper cabinet 5 and a lower cabinet 6, and the space therebetween is the storage section 3.

The pen lock member 4 includes an operation section 4a protruding from the slide section 1a of the upper cabinet 5, and an operation section 4a.
a comprising an arm portion 4b extending from the arm portion 4a. Upper cabinet 5
A step portion 5a is formed on the side of an insertion opening (not shown) of the slide portion 1a, and the operation portion 4a of the pen lock member 4 is placed on the upper surface of the lower stage of the step portion 5a.

The arm 4b extends obliquely downward from the operation unit 4a to the back of the storage unit 3, and has an input pen 7 at its tip.
A projection 4c that fits into the hole 7a is formed. Also, at the most distal end of the arm portion 4b, a convex portion 4 protruding upward.
d is formed. The arm portion 4b is thinner than the operation portion 4a and has appropriate elasticity.

In the upper cabinet 5 in the storage section 3, an inclined surface 5b is formed on the back side of the storage section 3 from the slide section 1a and becomes lower toward the back side. A smooth convex portion 5c is formed at the lowest portion of the inclined surface 5b, and a concave portion 5d which is recessed upward on the far side is formed. The upper cabinet 5 has a pin 5
e is provided. The pin 5 e extends perpendicularly to the direction in which the input pen 7 is inserted and withdrawn, and is located closer to an insertion opening (not shown) than the arm 4 b of the pen lock member 4.

As shown in FIG. 3, the input pen 7 is
Is inserted into the hole 7a of the input pen 7, the projection 4c of the pen lock member 4 is fitted, and the input pen 7 is fixed in position to the pen lock member 4. The protrusion 4 d of the pen lock member 4 is fitted into the recess 5 d of the upper cabinet 5, and the position of the pen lock member 4 is fixed to the upper cabinet 5. Therefore, the input pen 7 is held in the storage unit 3.

In this state, when the user moves the operating portion 4a of the pen lock member 4 in the direction of pulling out the input pen 7, the convex portion 4d of the pen lock member 4 fitted in the concave portion 5d of the upper cabinet 5 becomes Since the arm portion 4b has appropriate elasticity and the convex portion 5c of the upper cabinet 5 has a smooth shape, the arm portion 4b gets over the convex portion 5c and is separated from the concave portion 5d. Therefore, the position fixing of the pen lock member 4 with respect to the upper cabinet 5 is canceled.

The projection 4 d of the pen lock member 4 separated from the recess 5 d of the upper cabinet 5 slides on the inclined surface 5 b of the upper cabinet 5. At this time, since the projection 4c of the pen lock member 4 is fitted into the hole 7a of the input pen 7, the input pen 7 moves together with the pen lock member 4 and is pulled out in the input pen 7 withdrawing direction.

As shown in FIG. 4, the pen lock member 4 moved in the direction of pulling out the input pen 7 contacts the pin 5e of the upper cabinet 5 on the lower surface of the arm 4b, and the arm 4b further contacts the pin 5e. By sliding, the arm 4b
Lifts the tip. Thereby, the pen lock member 4
Of the input pen 7 is disengaged from the hole 7a of the input pen 7, and the position of the input pen 7 with respect to the pen lock member 4 is fixed.

In the input pen holding mechanism of the present embodiment, the projection 4c of the pen lock member 4 is
The input pen 7 does not easily fall out of the storage unit 3 even if the electronic device receives an impact, because the electronic pen is fitted into the storage unit 3.

Next, a second embodiment according to the present invention will be described. In the configuration of the first embodiment, insertion of the input pen 7 into the storage unit 3 and movement of the pen lock member 4 in the direction in which the input pen 7 is inserted must be moved by the user as separate operations. Was troublesome.

In this embodiment, in order to solve this problem,
The pen lock member 4 is automatically moved when the input pen 7 is inserted. FIGS. 5 and 6 are schematic configuration diagrams of the input pen holding mechanism of the present embodiment, and correspond to FIGS. 3 and 4 of the first embodiment. That is, FIG. 5 shows a state where the input pen 7 is inserted, and FIG. 6 shows a state where the input pen 7 is pulled out.

As shown in FIG. 5, a rectangular extending portion 4 extending vertically downward is provided on the lower surface of the operating portion 4a of the pen lock member 4.
e is formed. On the side surface of the input pen 7, a first stepped portion 7 b is formed at a part in the circumferential direction so that the diameter is reduced at the front end side (the left side in the figure) of the input pen 7.
The surface of the step portion 7b faces the back side of the storage portion 3 and is perpendicular to the insertion / removal direction of the input pen 7. Also, unlike the first embodiment, the upper cabinet 5 in the storage section 3 is different from the first embodiment.
The inclined surface 5b (see FIG. 3) is not formed. The configuration other than the above is the same as in the first embodiment.

The operation of inserting and removing the input pen 7 will be described.
In FIG. 6, the operation part 4a of the pen lock member 4 is located on the side of the insertion opening (not shown) of the slide part 1a. Insertion slot
When the input pen 7 is pressed down (not shown), the surface of the first step portion 7b of the input pen 7 presses the side surface of the extending portion 4e of the pen lock member 4, and the pen lock member 4 moves together with the input pen 7. I do.

As shown in FIG. 5, when the pen lock member 4 reaches the rear side of the slide portion 1a, the projection 4c of the pen lock member 4 is fitted into the hole 7a of the input pen 7 as in the first embodiment. Then, the input pen 7 is fixed in position to the pen lock member 4. Further, the projection 4 d of the pen lock member 4 goes over the projection 5 c of the upper cabinet 5 and fits into the recess 5 d, and the pen lock member 4 is fixed to the upper cabinet 5. Therefore, the input pen 7 is held in the storage unit 3.

In this state, when the user moves the operation unit 4a of the pen lock member 4 in the direction of pulling out the input pen 7, when the input pen 7, the pen lock member 4, and the upper cabinet 5 are connected to each other as in the first embodiment. Is fixed. Further, the extension 4 e of the pen lock member 4 is the first pen of the input pen 7.
Is pressed in the direction in which the input pen 7 is pulled out, so that the input pen 7 is kept outside the storage section 3 even after the engagement between the projection 4c of the pen lock member 4 and the hole 7a of the input pen 7 is released. Can be withdrawn. Thus, the input pen 7 can be easily taken out of the storage unit 3.

Next, a third embodiment according to the present invention will be described. 7 and 8 are schematic configuration diagrams of the input pen holding mechanism of the present embodiment, and correspond to FIGS. 3 and 4 of the first embodiment. That is, FIG. 7 shows a state in which the input pen 7 is inserted,
FIG. 8 shows a state where the input pen 7 is pulled out.

As shown in FIG. 7, an arm portion 4b extends obliquely downward from the operating portion 4a of the pen lock member 4.
A projection 4c projecting downward is formed at the tip.
A second step portion 4f is formed on the lower surface of the arm portion 4b so as to be thick at the tip end side of the arm portion 4b, and the surface of the second step portion 4f faces the insertion port (not shown). It has an inclined surface.

Further, unlike the second embodiment, the arm 4
No convex part 4d (see FIG. 5) is provided in b, and the upper cabinet 5 in the storage part 3 is flat on the back side of the storage part 3 from the slide part 1a. The configuration other than the above is the same as in the second embodiment.

The operation of inserting and removing the input pen 7 will be described.
In FIG. 8, the operation unit 4a of the pen lock member 4 is located on the insertion port (not shown) side of the slide unit 1a. The arm 4b is provided with a pin 5e on the distal end side of the second step 4f.
It is supported by. As a result, the tip of the arm 4b is lifted, and the protrusion 4c is separated from the input pen 7.

The input pen 7 is inserted through an insertion opening (not shown) of the storage section 3.
Is pressed, the surface of the first step portion 7b of the input pen 7 presses the side surface of the extending portion 4e of the pen lock member 4, and the pen lock member 4 moves together with the input pen 7. by this,
The arm portion 4b of the pen lock member 4 has a pin 5e at its lower surface.
And its tip gradually lowers.

As shown in FIG. 7, when the pen lock member 4 reaches the inner side of the slide portion 1a, the projection 4c of the arm portion 4b is fitted into the hole 7a of the input pen 7, and the input pen 7 is The position is fixed to the lock member 4. At this time, the pin 5e
The second stepped portion 4f of the arm portion 4b climbs over the second stepped portion 4f, and the surface of the second stepped portion 4f contacts the side surface of the pin 5e from the back side of the storage portion 3. Therefore, the pen lock member 4 cannot move in the direction in which the input pen 7 is pulled out, and is fixed in position with respect to the upper cabinet 5. Therefore, the input pen 7 is held in the storage unit 3.

In this state, when the user moves the operating portion 4a of the pen lock member 4 in the direction of pulling out the input pen 7, the second step portion 4f of the arm portion 4b has an inclined surface. The second step portion 4f can get over the pin 5e. As shown in FIG. 8, as the lower surface of the arm portion 4b of the pen lock member 4 slides with respect to the pin 5e, the tip of the arm portion 4b is lifted, and the protrusion 4c is formed.
Is removed from the hole 7a of the input pen 7. Further, similarly to the second embodiment, the extending portion 4e of the pen lock member 4 is
By pressing the surface of the first step portion 7b, the input pen 7 also moves in the withdrawing direction.

In the input pen holding mechanism of the present embodiment, a pin 5e for releasing the position of the pen lock member 4 and the input pen 7 is fixed, and an upper cabinet for fixing the position of the pen lock member 4 and the upper cabinet 5 is fixed. It is used as a member on the fifth side. Thus, unlike the first and second embodiments, there is no need to provide the convex portion 4d of the pen lock member 4 or the concave portion 5d of the upper cabinet 5 (see FIGS. 3 and 5), so that the configuration is simplified accordingly. .

Next, a fourth embodiment according to the present invention will be described. FIGS. 9 and 10 are schematic configuration diagrams of the input pen holding mechanism of the present embodiment, and FIGS. 3 and 4 of the first embodiment.
Corresponding to 7 shows a state in which the input pen 7 is inserted, and FIG. 8 shows a state in which the input pen 7 is pulled out.

As shown in FIG. 10, the upper surface of the upper cabinet 5 has an insertion port (not shown) side lower than the back side of the storage section 3 with the slide portion 1a interposed therebetween.
The operation unit 4a of the pen lock member 4 is placed on the side.
An arm portion 4b extends obliquely upward from the operation portion 4a of the pen lock member 4 to the back side of the storage portion 3, and a protrusion 4c projecting downward and a projecting portion 4d projecting upward are formed at the tip thereof. ing.

Further, similarly to the first embodiment, an inclined surface 5b which becomes lower toward the inner side is formed in the upper cabinet 5 on the far side in the storage section 3, and the lowest point of the inclined surface 5b is formed. Has a convex portion 5c and a concave portion 5d. Further, similarly to the second embodiment, the pen lock member 4 has an extending portion 4e, and a side surface of the input pen 7 has a first step portion 7b.

The operation of inserting and removing the input pen 7 will be described.
In FIG. 10, the operation unit 4a of the pen lock member 4 is located on the insertion port (not shown) side of the slide unit 1a. Also,
The convex part 4d of the arm part 4b is the inclined surface 5 of the upper cabinet 5.
b, and the protrusion 4 c is separated from the input pen 7.

An input pen 7 is inserted through an insertion opening (not shown) of the storage section 3.
Is pressed, the surface of the first step portion 7b of the input pen 7 presses the side surface of the extending portion 4e of the pen lock member 4, and the pen lock member 4 moves together with the input pen 7. by this,
The arm 4b of the pen lock member 4 has a convex portion 4d having an inclined surface 5.
b, slides over the convex portion 5c of the upper cabinet 5, and fits into the concave portion 5d. Therefore, the position of the pen lock member 4 is fixed to the upper cabinet 5.

Since the tip of the arm 4b descends, when the pen lock member 4 reaches the rear side of the slide portion 1a, the projection 4 of the arm 4b is inserted into the hole 7a of the input pen 7.
c is fitted, and the input pen 7 is fixed in position to the pen lock member 4. Thus, the input pen 7 is held in the storage unit 3.

From this state, the operation unit 4 of the pen lock member 4
When a is moved in the direction in which the input pen 7 is withdrawn, the convex portion 4c of the pen lock member 4 gets over the convex portion 5c of the upper cabinet 5 and separates from the concave portion 5c as in the first embodiment. The projection 4c of the pen lock member 4 is connected to the upper cabinet 5
Slide with respect to the inclined surface 5b. That is, the arm 4b
Is lifted, so that the projection 4c of the arm 4b comes off the hole 7a of the input pen 7. Further, when the extending portion 4e of the pen lock member 4 presses the surface of the first step portion 7b of the input pen 7, the input pen 7 is moved in the withdrawing direction.

In the input pen holding mechanism of the present embodiment, the tip of the arm 4b of the pen lock member 4 is lifted only by sliding on the inclined surface 5b of the upper cabinet 5, and the arm 4
The projection 4c of b is disengaged from the hole 7a of the input pen 7 and the position is fixed. As a result, as in the first to third embodiments, the projection 4c of the arm 4b is inserted into the hole 7a of the input pen 7.
Since there is no need to provide a pin 5e (see FIGS. 3, 5, and 7) for removing the pin 5e, the configuration is simplified.

[0048]

As described above, according to the input pen holding mechanism of the first aspect, by fitting the protrusion of the pen lock member into the hole of the input pen, these can be reliably fixed in position. . Therefore, the input pen is not easily detached from the storage unit due to an impact applied to the electronic device.

According to the input pen holding mechanism of the second aspect, the pen lock member moves with the insertion of the input pen by the extension of the pen lock member abutting the surface of the step portion of the input pen. . Therefore, the position of each member is automatically fixed only by inserting the input pen, and the operation performed by the user becomes very simple.

Further, when the pen lock member is moved to pull out the input pen, the input pen is pulled out even after the engagement between the projection of the pen lock member and the hole of the input pen is canceled. Therefore, the rear end of the input pen protrudes long from the insertion port, and the user can easily grasp the rear end of the input pen to take out the input pen.

Further, in the input pen holding mechanism of the third aspect, a pin for releasing the position fixation of the second means is used as the structure of the pen lock member of the first means, and the structure of the pen lock member is omitted. are doing. Further, in the input pen holding mechanism according to the fourth aspect, a pin provided for canceling the position fixation of the second means is omitted. This simplifies the structure of each holding mechanism.

[Brief description of the drawings]

FIG. 1 is a front view of an electronic apparatus provided with an input pen holding mechanism of the present invention.

FIG. 2 is an external view of an input pen.

FIG. 3 is a schematic configuration diagram when the input pen is inserted in the input pen holding mechanism according to the first embodiment of the present invention.

FIG. 4 is a schematic configuration diagram of the input pen holding mechanism of the first embodiment when the input pen is pulled out.

FIG. 5 is a schematic configuration diagram when an input pen is inserted in an input pen holding mechanism according to a second embodiment of the present invention.

FIG. 6 is a schematic configuration diagram of the input pen holding mechanism of the second embodiment when the input pen is pulled out.

FIG. 7 is a schematic configuration diagram when an input pen is inserted in an input pen holding mechanism according to a third embodiment of the present invention.

FIG. 8 is a schematic configuration diagram of an input pen holding mechanism according to a third embodiment when an input pen is pulled out.

FIG. 9 is a schematic configuration diagram when an input pen is inserted in an input pen holding mechanism according to a fourth embodiment of the present invention.

FIG. 10 is a schematic configuration diagram of an input pen holding mechanism according to a fourth embodiment when an input pen is pulled out.

FIG. 11 is a schematic configuration diagram of a conventional input pen holding mechanism.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electric apparatus main body 2 Input / output part 3 Storage part 4 Pen lock member 4a Operation part 4b Arm part 4c Projection part 4d Convex part 4e Extension part 5 Upper cabinet 5d Concave part 5e Pin 6 Lower cabinet 7 Input pen 7a Hole 7b Step part

Claims (4)

[Claims] 1. An input pen holding mechanism for holding an input pen when an input pen for handwriting input of information into an electronic device is inserted into a storage portion of the electronic device main body, wherein an operation unit protruding from the electronic device main body. A pen lock member extending in the storage portion obliquely from the operation portion and having elasticity, the pen lock member being movable in the input pen insertion / removal direction, and the pen lock member being moved in the input pen insertion direction. First means for sometimes fixing the position of the pen lock member to the electronic device main body; and fixing the position of the input pen to the pen lock member when the pen lock member moves in the input pen insertion direction. A second protrusion for projecting from the tip of the arm portion of the pen lock member perpendicularly to the input pen insertion / removal direction. And a hole formed on a side surface of the input pen and into which the protrusion is fitted. 2. The pen lock member is provided with a rectangular extending portion extending perpendicularly to the input pen insertion / extraction direction, and a side surface of the input pen perpendicular to the input pen insertion / extraction direction. A first step portion having a surface facing the back side of the storage portion is provided, and the surface of the first step portion presses a side surface of the extension portion when the input pen is inserted. The input pen holding mechanism according to claim 1, wherein: 3. The pen lock member, wherein the arm portion extends obliquely downward from the operation portion, and the first means extends perpendicularly to the input pen insertion / removal direction from the electronic device main body. A pin located on the insertion port side of the storage unit, and a second step portion formed on the lower surface of the arm unit and facing the insertion port side of the storage unit, when the input pen is inserted. 3. The input pen holding mechanism according to claim 1, wherein a side surface of the pin abuts on a surface of the second step portion. 4. 4. The pen lock member, wherein the arm portion extends obliquely upward from the operation portion, and an upper wall in the storage portion of the electronic device main body is inclined so as to become lower toward a back side. Wherein the first means comprises a convex portion projecting upward from a tip of the arm portion, and a concave portion formed at the lowest portion of an upper wall in the storage portion of the electronic device main body and fitted with the convex portion. The input pen holding mechanism according to claim 1 or 2, wherein: