JP3834503B2 - Film transfer tool - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention transfers the coating film for correction or paste applied to the transfer tape fed from the supply reel onto the paper surface or the like by gripping and moving backward while pressing the paper surface or the like. More particularly, the present invention relates to a coating film transfer tool having a novel reverse rotation prevention mechanism.
[0002]
[Prior art]
When using a film transfer tool, the transfer tape may be accidentally moved in the opposite direction, or the transfer tape may be reversed due to vibration or the like when carrying a film transfer tool that uses the transfer tape halfway. In order to prevent this, a reverse rotation prevention mechanism is provided in the supply gear or the take-up gear.
[0003]
FIG. 7 is an exploded perspective view of the conventional coating film transfer tool (01), FIG. 8 is a plan view of the main part in an assembled state on the supply reel side in the coating film transfer tool (01) shown in FIG. It is the principal part longitudinal cross-sectional view of an assembly state similarly.
[0004]
A case is formed by opening the upper and lower case members (02) and (03), which are flat paired open containers, facing each other.
The front ends of the upper and lower case members (02) and (03) are notched to have openings (04) and (05), and the transfer head (06) projects from the openings.
[0005]
Support shafts (09) and (010) of the supply gear (07) and the take-up gear (08) are erected on the inner surface of the lower case member (03). A winding button (011) is rotatably fitted on the support shaft (09) of the supply gear (07), and the lower surface of the supply gear (07) is wound on the winding button (011). Locked by a locking claw (011a) at the lower end of the button (011) and rotatably fitted, and the compression coil spring (012) is connected to the lower surface of the upper peripheral edge (011b) of the winding button (011). A rotational torque is transmitted between the take-up button (011) and the supply gear (07) by being interposed between the upper surface of the supply gear (07) and a sliding mechanism is formed between the two.
[0006]
The upper peripheral edge (011b) of the winding button (011) is provided with a plurality of outward locking pieces (011c), and these outward locking pieces (011c) are provided inwardly on the inner surface of the supply reel (013). Rotating torque is transmitted between the winding button (011) and the supply reel (013) by locking with the locking piece (013a).
[0007]
The take-up gear (08) meshes with the supply gear (07), and a take-up reel (014) is integrally formed on the upper surface of the take-up gear (08).
[0008]
The transfer tape (015) wound around the supply reel (013) is fed out, reversed at the tip of the transfer head (06), and wound around the take-up reel (014).
[0009]
An anti-reverse mechanism is provided on the inner surface (03a) of the lower case member (03) on the inner surface (03a), concentrically with the support shaft (09) of the supply gear (07). 016a) and a ratchet claw (017) facing downward on the lower surface of the supply gear (07), and the ratchet claw (017) is pressed against the ratchet tooth (016). The supply gear (07) and the supply reel (013) rotate only in the direction in which the transfer tape (015) is fed out, and do not rotate in the reverse direction.
[0010]
[Problems to be solved by the invention]
However, the conventional reverse rotation preventing mechanism has the following problems.
a) The ratchet tooth portion (016) is integrally formed when the lower case member (03) is formed together with the support shafts (09) and (010). At this time, the mold is removed vertically. Therefore, when preventing the reverse rotation, the angle of the tooth surface of the ratchet tooth portion (016) with which the ratchet pawl (017) engages is formed at an acute angle with respect to the inner surface of the lower case member (03). Can not. Therefore, when the load in the direction of rotating the supply reel (013) is large, the ratchet pawl (017) may move upward and disengage from the ratchet teeth (016).
[0011]
b) For the purpose of preventing the disengagement of the engagement, the height of the engagement tooth (016a) of the ratchet tooth portion (016) is increased, and the ratchet pawl (017) is fitted to the ratchet tooth portion (016). Due to the pressure contact, the ratchet sound is relatively loud when using the coating film transfer tool (01), which may be bothersome.
[0012]
c) In the quality control in the manufacturing process of the coating film transfer tool (01), when inspecting the engaging teeth (016a) of the ratchet teeth portion (016) and the nail heights of the ratchet claws (017), Since it is provided in a direction perpendicular to the inner surface (03a) of the lower case member (03) and the lower surface of the supply gear (07), visual recognition is not easy, and labor is required for inspection.
[0013]
In view of the above situation, the present invention prevents the ratchet function from being impaired even when the load in the direction of rotating the supply reel is large, reduces the ratchet sound during use, and performs quality control. Another object of the present invention is to provide a coating film transfer tool provided with an easy reverse rotation prevention mechanism.
[0014]
[Means for Solving the Problems]
According to the present invention, the above problem is solved as follows.
(1) After a supply reel and a take-up reel are disposed in a case having an opening at the front end, a transfer head projects from the opening, and the transfer tape fed from the supply reel is reversed at the tip of the transfer head. In the coating film transfer tool that is wound around the take-up reel driven by transmitting the rotation torque of the supply reel through the supply gear and the take-up gear, the supply gear or the take-up gear is provided on the inner surface of the case. A ratchet tooth portion having concentric and radially inward engaging teeth is provided, and the lower surface of the supply gear or take-up gear is fixed to the inner surface of the case from the tip of the arm with the base portion fixed to the supply gear or take-up gear. a is projected, the form as well as radially outward, by providing the ratchet pawl for engaging the ratchet teeth, the reverse rotation preventing mechanism of the supply reel or the take-up reel The coating film transfer tool.
[0015]
(2) In the above item (1), the ratchet pawl provided on the tip of the arm is elastically biased the tip end radially outwardly.
[0016]
( 3 ) In the above item (2), the tip of the arm is elastically biased toward the inner surface of the case so that the bottom surface of the ratchet claw slides on the inner surface of the case when in use.
[0017]
( 4 ) In any one of the above items ( 1 ) to ( 3 ), the arm is provided with a radially inwardly curved portion at an intermediate portion thereof.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is an exploded perspective view of a coating film transfer tool showing an embodiment of the present invention, FIG. 2 is a plan view of an essential part in an assembled state on the supply reel side in the coating film transfer tool shown in FIG. It is the principal part longitudinal cross-sectional view of an assembly state, and these FIG.1, FIG.2, FIG.3 is drawing equivalent to FIG.7, FIG.8, FIG.9, respectively. FIG. 4 is a perspective view of a main part showing the engagement between the ratchet pawl and the ratchet tooth portion in the present invention.
1 to 4, parts corresponding to the reference numerals in FIGS. 7 to 9 are denoted by the same reference numerals excluding “0”, and the description thereof is omitted.
[0019]
In the coating film transfer tool (1) of the present invention, the reverse rotation prevention mechanism is concentric with the supply gear (7) and radially inward on the inner surface of the case formed by the upper and lower case members (2) and (3). A ratchet tooth portion (16) having a plurality of engaging teeth (16a) is provided, and a radially outward ratchet claw (17) engaging with the ratchet tooth portion (16) is provided on the lower surface of the supply gear (7). Provided.
The reverse rotation prevention mechanism may be provided on the winding gear (8) side, but is preferably provided on the supply gear (7) side.
[0020]
An unused transfer tape (15) is wound around the supply reel (13), compared to a take-up reel (14) around which a transfer tape after use with the coating film transferred onto the paper surface is wound. Thus, the diameter of the supply reel (13) is made larger than the diameter of the take-up reel (14) by considering the thickness of the coating film.
Accordingly, the supply gear (7) has a larger diameter than the winding gear (8).
[0021]
For this reason, it is more effective to prevent the reverse rotation from being provided on the supply gear (7) side than on the take-up gear (8) side because of the rotational ratio of both gears.
Hereinafter, a case where a reverse rotation prevention mechanism is provided on the supply gear (7) side will be described as an example.
[0022]
The ratchet tooth portion (16) in the present invention is an engagement tooth that is concentric with the support shaft (9) of the supply gear (7) and radially inward on the inner surface (3a) of the lower case member (3). (16a) is disposed.
In the illustrated embodiment, a protruding circle is provided on the inner surface (3a) of the lower case member (3) concentrically with the support shaft (9) of the supply gear (7), and a radius is formed on the inner peripheral surface thereof. The ratchet teeth (16) are formed by uniformly arranging the direction-inward engaging teeth (16a).
[0023]
As another embodiment, for example, on the inner surface (3a) of the lower case member (3), a concave circle is provided concentrically with the support shaft (9) of the supply gear (7), and the inner peripheral surface thereof is provided. An engagement tooth (16a) may be provided.
The ratchet tooth portion (16) can be easily integrally formed when the upper and lower case members (2) and (3) are formed of synthetic resin.
[0024]
The ratchet pawl (17) is radially outward of the supply gear (7) so as to engage the ratchet tooth (16) at the tip of the arm (18) whose base is fixed to the supply gear (7). Is provided.
The ratchet pawl (17) and the arm (18) are also made of synthetic resin and are integrally formed with the supply gear (7).
[0025]
As shown in FIG. 2, the arm (18) is provided with a radially inwardly curved portion (18a) of the supply gear (7) at the intermediate portion thereof, and by the hinge action of the curved portion (18a), The tip of the arm (18) is elastically biased outward in the radial direction. Therefore, the ratchet pawl (17) provided at the tip of the arm (18) engages with the ratchet teeth (16) satisfactorily.
[0026]
As shown in FIG. 4, the ratchet tooth portion (16) has a ratchet tooth portion (16) in which the direction of the engaging teeth (16a) is parallel to the inner surface (3a) of the lower case member (3). When the tooth surface (16b) of the tooth portion (16) is perpendicular to the inner surface (3a) of the lower case member (3), preventing reverse rotation without causing any trouble in the vertical removal of the mold. The angle of the tooth surface (16b) of the ratchet tooth portion (16) with which the ratchet claw (17) engages is acute angle (α) with respect to the direction of the tangential line (16c) of the circumference of the ratchet tooth portion (16). Can be molded.
Therefore, even when the load in the direction of rotating the supply reel (13) is large, the ratchet pawl (17) and the ratchet teeth (16) are not disengaged, and the reliability of the ratchet function is improved. Can do.
[0027]
5 is a vertical cross-sectional view taken along line VV in FIG.
As shown in the figure, the ratchet pawl (17) protrudes from the tip of the arm (18) whose base is fixed to the lower surface of the supply gear (7) toward the inner surface (3 a) of the lower case member (2). It is provided outward in the direction.
[0028]
Since the ratchet claw (17) is projected as described above, it can be easily and satisfactorily engaged with the ratchet tooth portion (16).
[0029]
FIG. 6 shows another embodiment of the ratchet pawl (19) and the arm (20), and corresponds to FIG.
As shown in the drawing, the arm (20) extends from the inner edge of the internal notch (7a) of the supply gear (7) on the same plane as the supply gear (7), and at the tip thereof, the lower case member (3) A ratchet claw (19) is provided so as to protrude in the direction of the inner surface (3a).
[0030]
The tip of the arm (20) is elastically biased toward the inner surface of the lower case member (3), and the bottom surface (19a) of the ratchet pawl (19) is in the lower case member (3) in use. It slides on the inner surface (3a).
Therefore, the ratchet pawl (19) can be prevented more satisfactorily from floating upward and disengaged from the ratchet teeth (16).
[0031]
10 is a longitudinal sectional view taken along line XX in FIG.
The engagement between the ratchet pawl (017) and the ratchet teeth (016) in the conventional coating film transfer tool (01) is in a direction perpendicular to the inner surface (03a) of the lower case member (03). When (01) is used, the ratchet pawl (017) operates in the range indicated by the phantom line and the solid line, and therefore has a height indicated by the symbol H upward from the inner surface (03a) of the lower case member (03). Requires space.
[0032]
On the other hand, the engagement between the ratchet pawls (17) and (19) and the ratchet teeth (16) in the present invention is in a direction parallel to the inner surface (3a) of the lower case member (3), and the coating film transfer tool ( Even during use of 1), the ratchet pawls (17), (19) operate in a direction parallel to the inner surface (3a), so that the spatial extension in the vertical direction to the inner surface (3a) is not necessary. Therefore, the thickness of the case made of the upper and lower case members (2) and (3) is made smaller than the thickness of the case made of the upper and lower case portions (02) and (03) in the conventional coating film transfer tool (01). be able to.
[0033]
【The invention's effect】
According to the present invention, the following effects can be achieved.
(1) According to invention of Claim 1, there exists the following effect.
a) The ratchet tooth portion is integrally formed when the lower case member is formed. However, since the direction of the engagement teeth in the ratchet tooth portion is parallel to the inner surface of the lower case member, When preventing reverse rotation without causing any trouble in removal, the angle of the tooth surface of the ratchet tooth portion with which the ratchet claw is engaged is formed with an acute angle with respect to the tangential direction of the circumference of the ratchet tooth portion. Can do.
Therefore, even when the load in the direction of rotating the supply reel is large, the ratchet pawl and the ratchet tooth portion are not disengaged, and the reliability of the ratchet function can be improved.
[0034]
b) Since the certainty of the ratchet function can be improved as described above, the engagement teeth in the ratchet teeth can be made smaller and the tooth height can be lowered.
By lowering the tooth height, ratchet noise during use can be reduced.
[0035]
c) Since the lower side surface of the engagement tooth in the ratchet tooth portion is fixed to the inner surface of the lower case member from the base portion to the tip, only the base portion is fixed as in the conventional engagement tooth. Compared to the form, the risk of missing the tooth tips of the engaging teeth is much less.
[0036]
d) Since the engagement direction between the ratchet pawl and the ratchet teeth is parallel to the inner surfaces of the upper and lower case members, a coating film transfer tool having a thin case can be obtained.
[0037]
e) Since the ratchet pawl and the engaging teeth of the ratchet teeth are parallel to the inner surface of the lower case member, the nails and the engaging teeth can be easily visually recognized from above. Quality control in the manufacturing process of the film transfer tool can be carried out efficiently.
[0038]
f ) The ratchet pawl is protruded from the tip of the arm toward the inner surface of the case and provided outward in the radial direction, so that the ratchet pawl can be easily and reliably engaged with the ratchet teeth. Certainty is improved.
[0039]
(2) According to the invention described in claim 2, since the ratchet pawl is always engaged with the ratchet tooth portion in a pressure contact state, the engagement is surely performed and the reliability of the ratchet function is improved.
[0040]
( 3 ) According to the invention described in claim 3, there can be obtained a reverse rotation preventing mechanism in which the engagement between the ratchet pawl and the ratchet tooth portion is not disengaged even with respect to a large load intended to reversely rotate the supply reel. .
[0041]
( 4 ) According to the invention described in claim 4 , the ratchet pawl is pressed against the ratchet tooth portion with an appropriate force by the hinge action of the curved portion, and the rotational resistance of the ratchet mechanism during use is reduced, and the ratchet sound is reduced. Reduction can be achieved.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a coating film transfer tool showing an embodiment of the present invention.
FIG. 2 is a plan view of a principal part in an assembled state on the supply reel side in the coating film transfer tool shown in FIG.
FIG. 3 is a longitudinal sectional view of an essential part in an assembled state on the supply reel side.
FIG. 4 is a perspective view of an essential part showing engagement between a ratchet pawl and a ratchet tooth portion in the present invention.
5 is a vertical sectional view taken along line VV in FIG. 2. FIG.
6 shows another embodiment of the ratchet pawl and arm forming the reverse rotation preventing mechanism according to the present invention, and corresponds to FIG.
FIG. 7 is an exploded perspective view of a conventional coating film transfer tool.
8 is a plan view of an essential part in an assembled state on the supply reel side in the coating film transfer tool shown in FIG. 7. FIG.
FIG. 9 is a longitudinal sectional view of an essential part in an assembled state on the supply reel side.
10 is a longitudinal sectional view taken along line XX in FIG. 9. FIG.
[Explanation of symbols]
(1) Coating film transfer tool
(2) Upper case member
(3) Lower case member
(3a) Inner surface
(4) (5) Opening
(6) Transfer head
(7) Supply gear
(7a) Internal notch
(8) Winding gear
(9) (10) Spindle
(11) Winding button
(11a) Locking claw
(11b) Upper edge
(11c) Outward locking piece
(12) Compression coil spring
(13) Supply reel
(13a) Inward locking piece
(14) Take-up reel
(15) Transfer tape
(16) Ratchet teeth
(16a) Engaging tooth
(16b) Tooth surface
(16c) Tangent
(17) Ratchet claw
(18) Arm
(19) Ratchet claw
(19a) Bottom
(20) Arm
(01) Coating film transfer tool
(02) Upper case member
(03) Lower case member
(03a) Inner surface
(04) (05) Opening
(06) Transfer head
(07) Supply gear
(08) Winding gear
(09) (010) Spindle
(011) Winding button
(011a) Locking claw
(011b) Upper edge
(011c) Outward locking piece
(012) Compression coil spring
(013) Supply reel
(013a) Inward locking piece
(014) Take-up reel
(015) Transfer tape
(016) Ratchet teeth
(016a) engaging tooth
(017) Ratchet claw

Claims (4)

A supply reel and a take-up reel are disposed in a case having an opening at the front end, a transfer head is projected from the opening, and the transfer tape fed from the supply reel is reversed at the tip of the transfer head, and then the supply reel In a coating film transfer tool that is wound around a take-up reel that is driven by transmitting the rotational torque of the motor via a supply gear and a take-up gear,
On the inner surface of the case, there is provided a ratchet tooth portion concentrically with the supply gear or the take-up gear and having engagement teeth radially inward, and the supply gear or the take-up gear is provided on the lower surface of the supply gear or the take-up gear. A feed reel or take-up reel reverse rotation prevention mechanism by providing a ratchet claw that protrudes radially outward from the tip of the arm with the base fixed to the outer surface, and that engages with the ratchet teeth. A coating film transfer tool, characterized in that is formed. A ratchet pawl, the coating film transfer tool according to claim 1, characterized in that provided at the tip of the arm is elastically biased the tip end radially outwardly. The coating film transfer tool according to claim 2 , wherein the tip of the arm is elastically biased toward the inner surface of the case so that the bottom surface of the ratchet claw slides on the inner surface of the case when in use. The coating film transfer tool according to any one of claims 1 to 3 , wherein the arm is provided with a radially inwardly curved portion at an intermediate portion thereof.

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