JP4486590B2 - Roll paper support structure - Google Patents

Description

  The present invention relates to a roll paper support structure, and more particularly to a roll paper support structure used in a printing apparatus assembled in a vehicle or the like.

  7 (A) and 7 (B) are an exploded perspective view and a cross-sectional view of a main part showing a first conventional roll paper support structure, respectively. FIG. 8 is an exploded perspective view of a main part showing a second conventional roll paper support structure. Note that the roll paper holding unit 125 ′ and the roll paper holding unit 125 ″ shown in FIGS. 7 and 8 respectively correspond to the roll paper holding unit 125 in FIG.

  A conventional roll paper support structure is used, for example, in the roll paper holding portion 125 of the printing apparatus 1 integrated in a taximeter as shown in FIG. The roll paper holding unit 125 is configured to pivotally support the hollow hole 141 of the roll paper 14 received in the roll paper storage unit 126. Further, the roll paper holding portions 125 are arranged to face each other and to be paired.

  First, as shown in FIGS. 7A and 7B, in the first conventional example, the roll paper holding portion 125 ′ is a cone inserted into the hollow hole 141 (see FIG. 1) of the roll paper 14. It includes a support member 125a ′ having a head portion 125a1 ′, a spring spring 125b ′, a storage chamber 125c ′, and a lid 125d ′. The lid 125d ′ is fitted into a hole 125e ′ provided in the guide wall 127 ′ of the main body case, and fixes the support member 125a ′ and the spring spring 125b ′ accommodated in the accommodation chamber 125c ′. Then, the roll paper holding portion 125 ′ having such a configuration is provided as a pair so that the head portions 125 a 1 ′ are opposed to each other.

  In such a configuration, the hollow holes 141 of the roll paper 14 are respectively inserted into the heads 125a1 'of the pair of roll paper holding portions 125' so that the roll paper 14 is pivotally supported.

  On the other hand, as shown in FIG. 8, in the second conventional example, a roll paper holding unit 125 ″ is arranged in place of the roll paper holding unit 125 ′. A support member 125a ″ having a conical head portion 125a1 ″ inserted into the hollow hole 141 (see FIG. 1), a spring spring 125b ″, a storage chamber 125c ″, and a lid 125d ″ are configured. The storage chamber 125c. ″ Has a wall 125c2 ″ formed integrally with a pair of claw receptacles 125c1 ″ and guide ribs 127 ″. The lid 125d ″ has a pair of engagement claws 125d1 ″ engaged with the claw receptacles 125c1 ″. Have. The engaging claw 125d1 ″ is engaged with the claw receiver 125c1 ″ to fix the support member 125a ″ and the spring spring 125b ″ accommodated in the accommodation chamber 125c ″. A roll paper holding portion 125 ″ having such a configuration is provided as a pair.

  In such a configuration, the hollow holes 141 of the roll paper 14 are respectively inserted into the heads 125a1 "of the pair of roll paper holding portions 125", and the roll paper 14 is pivotally supported.

The first conventional example is also disclosed in Patent Document 1 below.
JP 2003-171037 A

  However, in the first conventional example described above, as indicated by f1 in FIG. 7A, it is necessary to fit the lid 125d 'into the hole 125e' against the reaction force of the spring spring 125b '. Workability was not good. Further, the lid 125d 'may come off from the hole 125e' over time, and the stability and reliability were not good.

  Further, in the second conventional example described above, although there is no problem as in the first conventional example, the direction shown by f2 in FIG. 8 occurs when the roll paper 14 is removed from the roll paper holding portion 125 ″. Due to this force, the engagement between the engaging claw 125d1 ″ and the claw receiver 125c1 ″ is loosened, and the lid 125d ″ may fall off. That is, stability and reliability were not good.

  Therefore, in view of the above-described present situation, an object of the present invention is to provide a roll paper support structure that improves the workability during assembly and improves the stability and reliability of the support member after assembly.

  The roll paper support structure according to claim 1, which has been made to solve the above-described problem, is formed on the roll paper by providing a roll paper holding portion that pivotally supports the roll paper in a case to which the roll paper is attached. A support member is provided in the roll paper holding portion corresponding to the hollow hole, and the support member is movably moved forward and backward when the roll paper is attached to the case. Is mounted on the roll paper so that the roll paper is pivotally supported by the roll paper holding unit, so that only the head of the support member mounted from above is exposed. A receiving portion for receiving the supporting member; a wall against which one end of an elastic member for urging the supporting member abuts; a lid for covering the upper portion of the supporting member attached to the receiving portion; and the lid above the supporting member Along the direction of advance and retreat Characterized in that it and a convex portion for regulating the movement in a direction perpendicular to the moving direction of the support member via a slide inserted lid while the id insertable.

  According to the first aspect of the present invention, since the wall with which one end of the elastic member for moving the support member comes into contact is formed, the stability of the support member in the advancing / retreating direction is improved and the workability at the time of assembly is improved. Get better. Further, since the lid covering the upper portion of the support member can be slid and inserted by the convex portion, the workability at the time of assembly is further improved. Further, since the movement is restricted in the direction perpendicular to the advancing / retreating direction of the support member via the lid by the convex portion, the stability in this direction is also improved.

  The roll paper support structure according to claim 2, which has been made to solve the above-described problem, is configured such that in the support structure according to claim 1, the support members are paired and their heads face each other. It is characterized by that.

  According to the second aspect of the present invention, since the support members are paired and formed so that the respective heads face each other, the roll paper can be easily attached.

  According to the first aspect of the present invention, since the wall with which one end of the elastic member for moving the support member comes into contact is formed, the stability of the support member in the advancing / retreating direction is improved and the workability at the time of assembly is improved. Get better. Further, since the lid covering the upper portion of the support member can be slid and inserted by the convex portion, the workability at the time of assembly is further improved. Further, since the movement is restricted in the direction perpendicular to the advancing / retreating direction of the support member via the lid by the convex portion, the stability in this direction is also improved. Therefore, workability at the time of assembling is improved, and stability and reliability of the support member after assembling are improved.

  According to the second aspect of the present invention, since the support members are paired and formed so that the respective heads face each other, the roll paper can be easily attached. Further, since the stroke amount of each support member is reduced, the stability and reliability of the support member are further improved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing an example of an electronic apparatus to which a roll paper support structure according to an embodiment of the present invention is applied. FIG. 2 is an exploded perspective view showing a main part in FIG.

  The support structure of the present invention is used, for example, in the roll paper holding unit 125 of the printing apparatus 1 integrated with a taximeter as shown in FIG. The printing apparatus 1 has a box shape and includes a plastic main body case 110 and an openable cover 111. In the main body case 110, a button group 131 for non-accrual and discount, a button group 132 for an empty vehicle, an actual vehicle, and a total are arranged so as to be adjacent to the display unit 133.

  A roll paper storage portion 126 that is recessed in a curved shape corresponding to the shape of the roll paper 14 is formed on the left side of the display portion 133 in FIG. A roll paper holding unit 125 is provided on the inner wall 127 of the roll paper storage unit 126. The roll paper holding unit 125 is configured to pivotally support the hollow hole 141 of the roll paper 14 stored in the roll paper storage unit 126. The roll paper holding portions 125 are arranged opposite to each other. A cutter 127 for cutting the roll paper 14 is attached to the foremost part of the roll paper holding unit 125.

  Specifically, as shown in FIG. 2, the roll paper holding unit 125 includes a support member 125a, a spring spring 125b, a storage chamber 125c, and a lid 125d. The support member 125a includes a conical head portion 125a1 and a cylindrical main body portion 125a2 having a diameter larger than that of the conical head portion 125a1. The base of the head 125a1 is precisely cylindrical. The spring spring 125b is a known elastic member configured by spirally winding a single metal wire. Any other elastic member may be used as long as it has the same shape and physical properties as the spring spring 125b.

  The accommodation chamber 125 c is a chamber that accommodates the support member 125 a and the spring spring 125 b, and is integrally formed with the main body case 11. The guide wall 127 of the main body case 11 also forms part of the accommodation chamber 125c. In the accommodation chamber 125c, a lower rail 125c1 and an upper rail 125c2 are formed to allow the lid 125d to be slidably inserted in the direction indicated by A2. Two pairs of lower rails 125c1 are provided facing each other, and one pair of upper rails 125c2 are provided facing each other so as to alternate with these lower rails 125c1. Further, a U-shaped receiving portion 125c4 corresponding to the shape of the head 125a1 of the support member 125a is formed in the accommodation chamber 125c. Since the head portion 125a1 has a smaller diameter than the main body portion 125a2 as described above, only the head portion 125a1 can be exposed to the roll paper accommodating portion 126. Further, a lock groove 125c3 is formed in the vicinity of the receiving portion 125c4. It corresponds to the convex portions in the lower rail 125c1 and the upper rail 125c2.

  The lid 125d has a plate shape that can cover the upper portion of the support member 125a attached to the accommodation chamber 125c. Specifically, the lid 125d is formed with a pair of side grooves 125d1 that can slide on the upper rail 125c2 of the accommodation chamber 125c. Further, a U-shaped receiving portion 125d4 corresponding to the shape of the head 125a1 of the support member 125a is extended and installed on the lower surface of the lid 125d. This U-shaped receiving portion 125d4 is combined with the U-shaped receiving portion 125c4 so that only the head portion 125a1 is exposed to the roll paper accommodating portion 126. Lock claws 125d2 that engage with the lock grooves 125c3 of the storage chamber 125c are provided on both side surfaces of the receiving portion 125d4. A cut 125d3 is also provided to ensure the flexibility of the lock pawl 125d2.

  Next, an assembling method of the roll paper holding unit 125 configured as described above will be described with reference to FIGS. FIG. 2 is as described above, and FIG. 3 is a perspective view showing a state of the roll paper holding unit before the support member and the spring spring are attached. FIG. 4 is a perspective view showing a state of the roll paper holding unit to which the support member and the spring spring are attached. FIG. 5 is a perspective view showing a state of the roll paper holding unit immediately before the insertion of the lid is completed. FIG. 6 is a perspective view showing a state of the roll paper holding unit that has been assembled.

  When the support member 125a and the spring spring 125b are fitted into the storage chamber 125c in the direction shown by the arrow A1 in FIGS. 2 and 4 from the state shown in FIG. 3, the state shown in FIG. 4 is obtained. At this time, after combining the support member 125a and the spring spring 125b so that the spring spring 125b is housed in the support member 125a, one end of the spring spring 125b is pressed against the guide wall 127, and the head 125a1 of the support member 125a is pressed. Is aligned with the U-shaped receiving portion 125d4. Since the head portion 125a1 of the support member 125a has a smaller diameter than the main body portion 125a2, the spring force of the spring spring 125b can be received by the inner wall of the receiving portion 125d4. Therefore, workability when the support member 125a and the spring spring 125b are fitted into the accommodation chamber 125c is good.

  Next, when the lid 125d is slid into the housing chamber 125c in the direction shown by the arrow A2 in FIGS. 2 and 5 from the state shown in FIG. 4, the state shown in FIG. 5 is obtained. At this time, the bottom surface of the lid 125d is brought into contact with the lower rail 125c1 of the storage chamber 125c, and the side groove 125d1 of the lid 125d is aligned with the upper rail 125c2 of the storage chamber 125c, and then the lid 125d is pushed in.

  Then, when the lid 125d is further pushed in the direction shown by the arrow A2 in FIG. 5 from the state shown in FIG. 5, the completed state shown in FIG. 6 is obtained. When the lid 125d is pushed into the arrow A2, the lock claw 125d2 of the lid 125d is pressed against the wall in the vicinity of the receiving portion 125c4 of the storage chamber 125c and bent and then engaged with the lock groove 125c3. Return to. Therefore, the lid 125d will not fall out of the storage chamber 125c.

  In this way, at the time of assembly, the support member 125a and the spring spring 125b can be set so as not to receive the reaction force of the spring spring 125b, and after that, it is only necessary to push in the lid 125d. Further, since no screws or screws are required, the workability is further improved and the number of parts can be reduced.

  After the assembly is completed in this way, one end of the spring spring 125b is in contact with the guide wall 127, so the stability against the reaction force of the spring spring 125b generated in the direction indicated by f1 in FIG. 2 is very high. Become. Further, since the lid 125d is fixed in the vertical direction by the upper and lower rails 125c1 and 125c2, and the movement of the support member 125a is restricted accordingly, it occurs in the direction indicated by f2 in FIG. 2 when the roll paper 14 is removed. The stability against force is also very high.

  As described above, according to the embodiment of the present invention, the workability at the time of assembly is improved and the stability and reliability of the support member 125a after assembly are also improved.

  Further, since the support members 125a are paired and formed so that their heads face each other, the roll paper 14 can be easily attached. Moreover, since the stroke amount of each support member 125a decreases, the stability and reliability of the support member 125a are further improved. However, it is sufficient that at least one of the support members 125a is movable, and the present invention includes such a modification.

  Further, the support member 125a is incorporated in the unitized printing unit 12, and the main body case 11 includes a printing unit accommodating chamber 111 that allows the printing unit 12 to be detached from the front side. Paper replacement is possible. Therefore, the printing apparatus 1 according to the embodiment is very advantageous when assembled to a vehicle or the like. However, the present invention can be applied to devices other than a printing device assembled in a vehicle.

It is a perspective view which shows an example of the electronic device to which the support structure of the roll paper which concerns on one Embodiment of this invention was applied. It is a disassembled perspective view which shows the principal part in FIG. It is a perspective view which shows the state of the roll paper holding part before a supporting member and a spring spring are attached. It is a perspective view which shows the state of the roll paper holding | maintenance part to which the supporting member and the spring spring were attached. It is a perspective view which shows the state of the roll paper holding | maintenance part just before the insertion of a cover is completed. It is a perspective view which shows the state of the roll paper holding | maintenance part which assembly was completed. 7 (A) and 7 (B) are an exploded perspective view and a cross-sectional view of a main part showing a first conventional roll paper support structure, respectively. It is a principal part disassembled perspective view which shows the support structure of the 2nd conventional roll paper.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Printing apparatus 14 Roll paper 125 Roll paper holding | maintenance part 125a Support member 125b Spring spring 125c Storage chamber 125d Cover

Claims (2)

A roll paper holding part that pivotally supports the roll paper is provided in a case to which the roll paper is attached, and a support member is provided in the roll paper holding part corresponding to a hollow hole formed in the roll paper. When the roll paper is attached, the support member is moved so as to be able to advance and retreat, so that the support member is mounted in the hollow hole so that the roll paper is pivotally supported by the roll paper holding unit. A roll paper support structure,
A receiving portion for receiving the support member so that only the head of the support member mounted from above is exposed;
A wall against which one end of an elastic member that urges the support member contacts;
A lid that covers the top of the support member attached to the receiving portion;
The lid is slidably inserted along the forward / backward direction so as to cover the upper side of the support member, and the movement of the support member in a direction perpendicular to the forward / backward direction is regulated through the lid inserted by sliding. A convex part,
A support structure for roll paper, comprising: The support structure according to claim 1,
The support members are paired and formed so that their heads face each other.
A roll paper support structure characterized by that.

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