CN2670128Y

CN2670128Y - Rotary luminescent pen

Info

Publication number: CN2670128Y
Application number: CNU2003201194181U
Authority: CN
Inventors: 林聪明
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-12-19
Filing date: 2003-12-19
Publication date: 2005-01-12
Anticipated expiration: 2013-12-19

Abstract

The utility model provides a rotary luminous pen, comprising an upper penholder, a lower penholder, a pen core and a light-emitting element, and wherein, the light-emitting element comprises a luminous member, a cell and an electricity-conducting seat with a conductive sheet. The rotary luminous pen is characterized in that a drive device which can control the expansion of the pen core in two directions through alternately rotating in the clockwise and the anticlockwise two directions and is cooperated with the conductive sheet on the electricity-conducting seat to switch on or switch off the circuit while the pen core is extended out is sheathed with the inside of the upper penholder. Owing to that the utility model adopts the structure that the drive device which can control the expansion of the pen core in the two directions through alternately rotating in the clockwise and the anticlockwise two directions and is cooperated with the conductive sheet on the electricity-conducting seat to switch on or switch off the circuit while the pen core is extended out is arranged inside the upper penholder, therefore, while in use, the expansion of the pen core and the on-off of the luminous member can be conveniently controlled through that the rotating direction of the drive device is selected according to the user's requirement. The utility model is provided with very convenient use, simple structure and reliability.

Description

A kind of rotation light pen

Technical field

The utility model relates to a kind of light pen, the particularly a kind of flexible rotation light pen that reaches the bright of illuminator or go out that can control pen core according to user's needs.

Background technology

Existing light pen generally be adopt push pen not the mode of end button control the lifting of illuminator light on and off and pen core simultaneously, illuminator is bright when promptly writing, when going out, but can not write illuminator, but under well-lighted situation, need be when the user writes by the light source of its illuminator, and this kind structure can't freely be controlled the light on and off of illuminator in the penholder according to user's needs, caused the unnecessary waste of battery undoubtedly, increased use cost, and the luminous ball pen of existing nationality rotation, can only rotate back and forth the purpose that reaches use to a direction during use, then can cause penholder to get loose during opposite spin or block, use dull.The patent No. is that the Chinese patent of ZL99210791 discloses the separately controllable light pen of a kind of illuminator, although it can freely control the light on and off of illuminator and the color of light source according to user's needs the light pen of this structure, reduced the waste of battery, but its weak point is the nib of pen core exposes all the time outside penholder, can not withdraw, therefore the collection and the clothing of making dirty easily when carrying also are difficult to satisfy numerous users' demand.

Summary of the invention

The purpose of this utility model is to solve above-mentioned existing problems, provide a kind of can be by clockwise, the both direction rotation upward knob on the penholder and twocouese control pen core flexible and the light pen that forms the bright of illuminator respectively or go out when pen core stretches out counterclockwise.

The technical solution of the utility model is achieved in that

A kind of rotation light pen, comprise following penholder and be installed on the interior pen core of this time penholder, be connected in this rod rear end portion and be equipped with the last penholder of light-emitting component in it of starting writing, wherein said light-emitting component comprises illuminator, at least one button cell and be connected in the battery tail end and device has conducting strip on it conductive seat, the negative wiring pin of described illuminator is connected in the negative pole of battery, its positive wiring pin is connected in conductive seat, is characterized in that the described interior device of penholder of going up has one can pass through clockwise, counterclockwise rotating back and forth of both direction and two-way control pen core flexible and when pen core stretches out with described conductive seat on conducting strip cooperate the drive unit that forms the circuit on-off respectively.

Above-mentioned drive unit comprises by core base and is installed on respectively that being used on this core base controlled refill expansion and cooperates with conducting strip on the described conductive seat when pen core stretches out and forms the disconnected into mechanism and conducting of leading of leading of circuit on-off respectively and lead the movement group that mechanism into forms, can be clockwise, be installed on the knob of penholder afterbody with being rotated counterclockwise, be placed on movably on this movement group and can rotate synchronously and its inwall is provided with and can promotes described rotation fixed cover of leading " V " shape ring shoulder that mechanism into slides up and down with the rotation of above-mentioned knob, above-mentioned go up also is provided with a fixed cover that is used for fixing the movement group in the penholder, described movement group is nested with by described fixed cover and cooperating of core base bottom and is positioned in the penholder.

For further making the utility model simple in structure, reliable, easy to use, above-mentionedly lead disconnected movable block and the back-moving spring that mechanism into comprises plastic catheter and is installed on this conduit upper end of leading, movable block and the back-moving spring that mechanism into comprises metal catheter and is installed on the conduit upper end led in above-mentioned conducting, and the outer wall of described each movable block convexes with a projection that can slide along above-mentioned rotation fixed cover inwall ring shoulder respectively.

For further strengthening its reliability of structure, above-mentioned knob comprise revolve and rearward end be placed in admittedly this revolve interior and be coated on the above-mentioned rotation fixed cover and can be with a rotation of revolving the transmission sleeve pipe of driven rotary fixed cover rotation, and the above-mentioned upward tail end of penholder also is equipped with an inner connecting tube that is used to connect above-mentioned knob.

It is simple in structure, reliable, installation is simple and easy, easy to use in order further to make, above-mentioned going up also is provided with a step-like battery chamber that can be used for connecting pen core and install illuminator, battery, conductive seat in the penholder, be with a back-moving spring outside the middle part of this battery chamber, and above-mentioned conductive seat is made up of the step-like conduction back plug and the conductive gasket of mutual socket, above-mentioned conducting strip is set the middle part and the outer wall of described conduction back plug respectively, and above-mentioned conductive seat plugs the rearward end in described battery chamber tightly.

The utility model is because employing device in last penholder has one can pass through clockwise, counterclockwise rotating back and forth of both direction and two-way control pen core flexible and when pen core stretches out, cooperate the structure of the drive unit of formation circuit on-off with its conductive seat, thereby in use can be conveniently select the direction of rotation of its drive unit to control flexible and illuminator bright of pen core or go out according to user's needs, not only can control when toward the rotation of some directions promptly that pen core stretches out but also realize the bright of illuminator simultaneously or go out, operate simple and easy, extremely easy to use, and it is simple in structure, reliably, avoided the waste of battery effectively and the pen core that the exposes clothing of making dirty, deposit and carry the generation of uneasy congruent incident.And form respectively that leading of circuit on-off is disconnected leads the structure that into mechanism and conducting lead movement group, the knob of mechanism into and be placed on this movement group also the drive unit of the rotation fixed cover composition that can rotate with the rotational synchronization of knob movably owing to adopt on it device respectively to be useful on the control refill expansion and when pen core stretches out, cooperates with conductive seat, further make it simple in structure, reliable, easy to use.Simultaneously because it adopts by what plastic cement or metal catheter, the movable block that is installed on the conduit upper end and back-moving spring were formed leads mechanism into and by the structure of revolving the knob that handle and transmission sleeve pipe form, make further that it is simple in structure, reliable, installation is simple and easy, production cost is low.

Below in conjunction with accompanying drawing the utility model is further described.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is an installation diagram of the present utility model;

Fig. 3 is the structural representation of core base among Fig. 2;

Fig. 4 is the sectional structure schematic diagram of rotation fixed cover among Fig. 2;

Fig. 5 is the sectional structure schematic diagram of conduction back plug among Fig. 2.

The specific embodiment

As shown in Figures 1 and 2, the utility model comprises following penholder 1 and is installed on the interior pen core 3 of this play penholder 1, be connected in this time penholder 1 rearward end and be equipped with the last penholder 2 of light-emitting component 4 in it, wherein said light-emitting component 4 comprises illuminator 41, at least one button cell 44 and be connected in battery 44 tail ends and on it device two conducting strips 423 are arranged, 424 conductive seat 42, the negative wiring pin of described illuminator 41 is connected in the negative pole of battery 44, its positive wiring pin is connected in conductive seat 42, for making the utility model can be according to user's the light on and off that needs are controlled the flexible and illuminator 41 of pen core 3 of writing, make dirty the generation of incidents such as clothing of the pen core 3 of avoiding the waste of battery 44 and exposing, described go up in the penholder 2 that returning apparatus have one can be by clockwise, counterclockwise rotating back and forth of both direction and two-way control pen core 3 flexible and when pen core 3 stretches out respectively with the conducting strip 423 of described conductive seat 42,424 cooperate the drive unit that forms the circuit on-off.Described drive unit comprised by core base 63 and was installed on being used on this core base 63 respectively to control pen core 3 flexible and when pen core 3 stretches out and the conducting strip 423 of described conductive seat 42 this moment, 424 cooperate to form the disconnected into mechanism 62 and conducting of leading of leading of connecting and disconnecting of the circuit leads the movement group 6 that mechanism 61 into forms, can be clockwise, be installed on the knob 5 of penholder 2 afterbodys with being rotated counterclockwise, be placed on movably on this movement group 6 and can rotate synchronously and its inwall is provided with and can promotes the described into mechanism 61 that leads with the rotation of knob 5, the rotation fixed cover 7 of 62 " V " shape ring shoulders 71 that slide up and down, described knob 5 is placed on the described rotation fixed cover 7, and above-mentioned go up also is provided with a fixed cover 21 that is used for fixing movement group 6 in the penholder 2, described movement group 6 was nested with and is installed on securely in the penholder 2 by described fixed cover 21 and cooperating of core base 63 bottoms.For making the utility model simple in structure, reliably, easy to use, as Fig. 2, Fig. 3 and shown in Figure 4, above-mentionedly lead disconnected movable block 623 and the back-moving spring 622 that mechanism 62 into comprises plastic catheter 621 and is installed on these conduit 621 upper ends of leading, movable block 613 and the back-moving spring 612 that mechanism 61 into comprises metal catheter 611 and is installed on conduit 611 upper ends led in above-mentioned conducting, and described movable block 613,623 outer wall convexes with one respectively can be along the projection of above-mentioned rotation fixed cover 7 inwall rings shoulder 71 slips, described back-moving spring 622,612 is up big and down small coil tension spring, above-mentioned core base 63 can be set the described into mechanism 62 that leads respectively for being longitudinally set with on it, the cylinder of 61 two relative grooves 631, the bottom of this cylinder is a hollow cylinder, the above-mentioned into mechanism 62 that respectively leads, 61 are installed in the described groove 631 and each conduit 621 movably, 611 lower ends are built in interior its bottom that also is shorter than slightly of hollow cylinder of core base 63 bottoms, described back-moving spring 622,612 upper end is placed in the top of each groove 631 respectively, its lower end is connected to described movable block 623, on 613, above-mentioned movement group 6 cooperates to be nested with and is positioned to rotate in the fixed cover 7 by core base 63 outer walls and rotation fixed cover 7 inwalls, and the rotation driven rotary fixed cover 7 by knob 5 different directions rotates synchronously and impels described movable block 623,613 slide up and down along the both sides of " V " shape ring shoulder 71 respectively and form the light on and off of the flexible and illuminator 41 of pen core 3.For making above-mentioned illuminator 41 can produce different light sources, strengthen the recreational of its use, above-mentioned illuminator 41 is continuously the light emitting diode of output different colored light sources.For further making its reliable in structure, easy for installation, as Fig. 2 and shown in Figure 5, above-mentioned knob 5 comprise revolve 51 and rearward end be placed in this admittedly and revolve the transmission sleeve pipes 52 in 51, this transmission sleeve pipe 52 is coated on the above-mentioned rotation fixed cover 7 and can be with revolving 51 rotation and driven rotary fixed cover 7 rotates synchronously, this moment when avoiding knob 5 rotation described transmission sleeve pipe 52 with rotate the relative slip of generation between the fixed cover 7, above-mentioned rotation fixed cover 7 can be placed in the described transmission sleeve pipe 52 admittedly, also can the location card article be set, it be placed in the described transmission sleeve pipe 52 again at the outer wall of rotation fixed cover 7.And the above-mentioned tail end of going up penholder 2 also is equipped with one and is used to connect the above-mentioned knob 5 and the inner connecting tube 24 of the spacing convex shoulder of end band thereafter, and above-mentioned knob 5 is connected on the penholder 2 with revolving cooperating of 51 leading sections be nested with by described inner connecting tube 24.The simultaneously above-mentioned rear end of penholder 1 down is connected with one and is with and connects tooth 8 in externally threaded, the front end that connects tooth 8 in being somebody's turn to do is provided with spacing ring shoulder 81, connect tooth 23 in the above-mentioned inner chamber front end of going up penholder 2 is provided with accordingly, above-mentioned go up penholder 2 by interior connect tooth 23 with in connect to revolve cooperating of tooth 8 to put and be firmly attached to down on the penholder 1.For further making it simple in structure, reliably, install simple and easy, also be provided with one in the above-mentioned upward penholder 2 and can be used for connecting pen core 3 and device illuminator 41, battery 44, the step-like battery chamber 43 of conductive seat 42, these battery chamber's 43 front ends are for being nested with the sleeve pipe at pen core 3 rear portions, its middle part and rear portion are nested with above-mentioned illuminator 41 for cooperating, the stepped hollow cylinder of battery 44 and conductive seat 42, the lateral wall of this hollow cylinder also is provided with one and can places the perforation of illuminator 41 positive wiring pin and set the elongated slot 431 of illuminator 41 positive wiring pin, and also be provided with an insulating trip 45 between above-mentioned illuminator 41 and battery 44 negative poles, this insulating trip 45 is provided with the perforation 451 that can place illuminator 41 negative wiring pin, above-mentioned illuminator 41, insulating trip 45, battery 44, the perforation that conductive seat 42 is placed in this battery chamber 43 in regular turn and the negative wiring of above-mentioned illuminator 41 was worn on the insulating trip 45 contacts with battery 44 negative poles, and its positive wiring was worn battery chamber's 43 sidewalls and was embedded in its outer wall elongated slot 431 and contacts with conductive seat 42.For further strengthening its reliability of structure, above-mentioned conductive seat 42 is made up of the step-like conduction back plug 421 and the conductive gasket 422 of mutual socket, above-mentioned conducting strip 423 is set the middle part of described conduction back plug 421 and its two ends and is bent respectively in the upper and lower surface of described conduction back plug 421 and be used for conduit 611 anodal with battery 44 and that slide, 621 contacts, the outer wall that above-mentioned conducting strip 424 is set described conduction back plug 421 contact with conductive gasket 422 and the one end bends the conduit 611 of filling in 421 lower surface and sliding in described conduction back, 621 contacts, above-mentioned conductive seat 42 plugs tightly in the rearward end of described battery chamber 43 and its conductive gasket 422 and contacts with the positive wiring pin of illuminator 41.Its structure is reliable more in order to make, use is convenient, the rear portion of this conduction back plug 421 outwards is provided with two and blocks protruding 425 relatively, above-mentioned penholder 2 inner chambers of going up are provided with the positioning sleeve 22 of band guide groove 221 accordingly near the position of fixed cover 21, and the card protruding 425 of above-mentioned light-emitting component 4 by above-mentioned back plug 421 is placed in the guide groove 221 of described positioning sleeve 22 and can slides up and down to be placed on above-mentioned going up in the penholder 2.More convenient, laborsaving for the utility model is used, be with a back-moving spring 9 outside the middle part of described battery chamber 43, the two ends of this back-moving spring 9 hold out against the step place at 43 rear portions in the battery chamber and the not end of following penholder 1 respectively.For make this its carry more conveniently, reliable, the above-mentioned outer wall of going up penholder 2 has a pen clip near the rear end returning apparatus.

Below use of the present utility model is described in further detail.During use, when the user does not need light source by illuminator 41, can be by rotating driven rotary fixed cover 7 to rotate synchronously to make the disconnected movable block 623 of leading in the mechanism 62 into of leading of being nested with in it to overlap " V " shape ring shoulder 71 of 7 inwalls to lower slider to clockwise direction knob 5 along said fixing, impel plastic catheter 621 to move downward, thereby driving its light-emitting component 4 and pen core 3 accordingly moves downward and makes the nib of pen core 3 to stretch out penholder 1 down, because above-mentioned plastic catheter 621 is an insulator, so two conducting strips 423 after the conduction of light-emitting component 4 on the plug 421,424 can't form the current lead-through loop, and illuminator does not work; After using, turn round knob 5 again, leading on the above-mentioned movement group 6 disconnected leads into that mechanism 62 resets by the back-moving spring on it 622, and above-mentioned pen core 3 its back-moving spring 9 that passes through too bounces back in penholder 1 down simultaneously, avoided making dirty of clothing, easy to carry, safety; And under the darker condition of light, again can be by knob 5 is overlapped " V " shape ring shoulder 71 of 7 inwalls to lower slider to the movable block 613 that rotation counterclockwise comes driven rotary fixed cover 7 to rotate synchronously to make the conducting that is nested with in it to lead in the mechanism 61 into along said fixing, impel metal catheter 611 to move downward, the light-emitting component 4 and the pen core 3 that promote simultaneously under it move downward and make the nib of pen core 3 to stretch out following penholder 1, and because metal catheter 611 is a conductor, so two conducting strips 423 after when releasing pen core 3, can utilizing conduit 611 again and conducting electricity on the plug 421,424 connection and be communicated with two conducting strips 423,424, thereby make above-mentioned light-emitting component 4 form a complete current loop, illuminator 41 is luminous.After using, turn round knob 5 again, conductor on the above-mentioned movement group 6 is led into, and mechanism 61 can reset by the back-moving spring on it 612 again, above-mentioned pen core 3 its back-moving spring 9 that passes through too bounces back in following penholder 1, this moment, illuminator 41 was also owing to returning of metal catheter 611 extinguished, therefore it is extremely easy to use, and it is simple in structure, installation is simple and easy, production cost is low, has vast market prospect.

Claims

1, a kind of rotation light pen, comprise following penholder (1) and be installed on the interior pen core (3) of this time penholder (1), be connected in this time penholder (1) rearward end and be equipped with the last penholder (2) of light-emitting component (4) in it, wherein said light-emitting component (4) comprises illuminator (41), at least one button cell (44) and be connected in battery (44) tail end and on it device two conducting strips (423 are arranged, 424) conductive seat (42), the negative wiring pin of described illuminator (41) is connected in the negative pole of battery (44), its positive wiring pin is connected in conductive seat (42), it is characterized in that the described interior device of penholder (2) of going up has one can pass through clockwise, counterclockwise rotating back and forth of both direction and twocouese control pen core (3) flexible and in pen core (3) when stretching out respectively with described conductive seat (42) on conducting strip (423,424) cooperate the drive unit that forms light-emitting component (4) circuit on-off.

2, light pen according to claim 1, it is characterized in that above-mentioned drive unit comprises by core base (63) and be installed on being used on this core base (63) respectively to control pen core (3) flexible and in pen core (3) when stretching out and the conducting strip (423 on the described conductive seat (42), 424) cooperate to form that leading of light-emitting component (4) connecting and disconnecting of the circuit is disconnected leads into that mechanism (62) and conducting lead the into movement group (6) of mechanism (61) composition, can be clockwise, both direction is installed on the knob (5) of penholder (2) afterbody rotatably counterclockwise, be placed on movably that this movement group (6) goes up and can rotate synchronously and its inwall is provided with and can promotes described two and lead into mechanism (61 with the rotation of knob (5), the rotation fixed cover (7) of " V " shape ring shoulder (71) that 62) slides up and down, and above-mentioned go up also is provided with a fixed cover (21) that is used for fixing movement group (6) in the penholder (2), described movement group (6) is nested with by this fixed cover (21) and cooperating of core base (63) bottom and is positioned in the penholder (2).

3, light pen according to claim 2, it is characterized in that above-mentioned disconnected movable block (623) and the back-moving spring (622) that mechanism (62) into comprises plastic catheter (621) and is installed on this conduit (621) upper end of leading of leading, movable block (613) and the back-moving spring (612) that mechanism (61) into comprises metal catheter (611) and is installed on conduit (611) upper end led in above-mentioned conducting, and described movable block (613,623) outer wall is respectively equipped with one can be along the projection of above-mentioned rotation fixed cover (7) inwall " V " shape ring shoulder (71) slip, described back-moving spring (622,612) be up big and down small coil tension spring, above-mentioned core base (63) can be set the described into mechanism (62 that leads respectively for being longitudinally set with on it, the cylinder of two relative grooves (631) 61), the bottom of this cylinder is a hollow cylinder, the above-mentioned into mechanism (62 that respectively leads, 61) be installed in the described groove (631) movably and each conduit (621,611) interior core base (63) bottom that also is shorter than slightly of hollow cylinder that groove (631) bottom is built in core base (63) bottom is passed in the lower end, described back-moving spring (622,612) upper end is placed in the top of each groove respectively, its lower end is connected to described movable block (623,613) on, above-mentioned movement group (6) cooperates to be nested with and is positioned to rotate in the fixed cover (7) by core base (63) outer wall and rotation fixed cover (7) inwall, and impels described movable block (623 by rotation driven rotary fixed cover (7) rotation synchronously of knob (5) different directions, 613) slide up and down along the both sides of " V " shape ring shoulder (71) respectively and form the light on and off of the flexible and illuminator (41) of pen core (3).

4, according to claim 2 or 3 described light pens, it is characterized in that above-mentioned knob (5) comprises revolving is placed in this to (51) and rearward end thereof admittedly and revolves in (51) and be coated at that above-mentioned rotation fixed cover (7) is gone up and can be with revolving the rotation of (51) and driven rotary fixed cover (7) the transmission sleeve pipe (52) of rotation synchronously, the above-mentioned tail end of going up penholder (2) also is equipped with an inner connecting tube (24) that is used to connect above-mentioned knob (5), the rearward end of this inner connecting tube (24) is provided with spacing convex shoulder, above-mentioned knob (5) by described inner connecting tube (24) with revolve cooperating to be nested with and be connected on the penholder (2) (51) leading section.

5, light pen according to claim 4, the rearward end that it is characterized in that above-mentioned down penholder (1) is connected with one and is with and connects tooth (8) in externally threaded, the front end that connects tooth (8) in being somebody's turn to do is provided with spacing ring shoulder (81), connect tooth (23) in the above-mentioned inner chamber front end of going up penholder (2) is provided with accordingly, above-mentioned go up penholder (2) by interior connect tooth (23) with in connect to revolve cooperating of tooth (8) to put and be firmly attached to down on the penholder (1).

6, according to claim 1 or 2 or 5 described light pens, it is characterized in that also being provided with in the above-mentioned upward penholder (2) one and can be used for connecting pen core (3) and device illuminator (41), battery (44), the step-like battery chamber (43) of conductive seat (42), the front end of this battery chamber (43) is for being nested with the sleeve pipe at pen core (3) rear portion, its middle part and rear portion are nested with illuminator (41) for cooperating, the hollow cylinder of battery (44) and conductive seat (42), also be provided with the insulating trip (45) of a tape punching (451) between above-mentioned illuminator (41) and battery (44) negative pole, and also being provided with one on the rear outside wall of this battery chamber can place the perforation of the positive wiring pin of illuminator (41) and set the just elongated slot (431) of wiring pin of illuminator (41), above-mentioned illuminator (41), insulating trip (45), battery (44), the perforation (451) that conductive seat (42) is placed in this battery chamber (43) in regular turn and the negative wiring of above-mentioned illuminator (41) was worn on the insulating trip (45) contacts with battery (44) negative pole, and its positive wiring was worn battery chamber's (43) sidewall and was embedded in its outer wall elongated slot (431) and contacts with conductive seat (42).

7, light pen according to claim 6, it is characterized in that above-mentioned conductive seat (42) is filled in (421) by the step-like conduction back of mutual socket and conductive gasket (422) is formed, above-mentioned conducting strip (423) is set the middle part of described conduction back plug (421) and its two ends and is bent respectively in the upper and lower surface of described conduction back plug (421) and be used for conduit (611 anodal with battery (44) and that slide, 621) contact, the outer wall that above-mentioned conducting strip (424) is set described conduction back plug (421) contact with conductive gasket (422) and the one end bends in described conduction back and fills in the lower surface of (421) and the conduit (611 that slides, 621) contact, above-mentioned conductive seat (42) plugs tightly in the rearward end of described battery chamber (43) and its conductive gasket (422) and contacts with the positive wiring pin of illuminator (41).

8, light pen according to claim 7, the rear portion that it is characterized in that plug (421) after the above-mentioned conduction outwards is provided with two cards protruding (425) relatively, the above-mentioned inner chamber of going up penholder (2) is provided with the positioning sleeve (22) of band guide rail (221) accordingly near the position of fixed cover (21), and the card protruding (425) that above-mentioned light-emitting component (4) is filled in (421) after by above-mentioned conduction is embedded in the guide rail (221) of described positioning sleeve (22) and can slides up and down to be placed in the penholder (2).

9, according to claim 7 or 8 described light pens, it is characterized in that being with a back-moving spring (9) outside the middle part of above-mentioned battery chamber (43), the two ends of this back-moving spring (9) hold out against the step place at (43) rear portion in the battery chamber and the not end of following penholder (1) respectively.