JP3836914B2 - Ink Reel Lock Mechanism - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a reel lock mechanism for restraining the rotation of a reel in an ink brush used for inking in woodwork or architecture.
[0002]
[Prior art]
For example, as shown in FIG. 5, a typical conventional example of a sump used by a construction worker or the like is basically a reel 103 urged in a thread winding direction by a spiral spring (not shown) in a thread winding case 101. The outer periphery inking thread 104 is wound, and the inking thread 104 passes through the ink infiltrating member 105 accommodated in the main body case 102 and is fed out from the thread outlet 102a of the main body case 102 to the outside. . A sword 106 for attaching to the surface A to be inked, such as wood, is attached to the tip of the inked yarn 104 fed out from the yarn feeding port 102a.
[0003]
The inking operation using the ink brush is performed by first fixing the main body case 102 to a predetermined position after the karuko 106 is fixed at the starting point of the inking by sticking the piercing needle 106a into the inking target surface A. By moving it, the ink strike yarn 104 wound around the reel 103 in the spool case 101 is fed out by the moving distance of the main body case 102, and in the drawing process, the ink sump held by the ink penetrating member 105 in the main body case 102. A black line is transferred by sticking the black line 104 between the karuko 106 and the main body case 102 toward the surface A to be printed with a finger. It is performed by the procedure of Further, after completion of the inking operation, if the ink 106 is pulled out from the inking target surface A by forcibly pulling the inking thread 104 or the like, the spiral spring accumulated when the inking thread 104 is fed out. The urging force of the reel 103 causes the reel 103 to rotate in the take-up direction, whereby the ink strike thread 104 is automatically taken up on the reel 103 until the karuko 106 is locked in the thread feeding hole of the main body case 102. It is done.
[0004]
The spar 106 is replaced when the piercing needle 106a is bent by repeated use. At the time of replacement, the end of the inked thread 104 from which the spar 106 has been removed is reeled by the reel 103 and the bobbin case 101. It is necessary to constrain the rotation of the reel 103 in the winding direction by the spiral spring so as not to be pulled inward. Further, even when the ink brush is used as a downward swing, it is necessary to restrain the rotation of the reel 103 in a state where the ink thread 104 is pulled out to an appropriate length. An example of a locking mechanism for the reel 103 for such a purpose is disclosed in Japanese Utility Model Publication No. 6-73252.
[0005]
[Problems to be solved by the invention]
However, the conventionally known reel lock mechanism (ink thread stop mechanism) in the ink brush rotates the case cover holding the reel to a portion corresponding to the bobbin winding case 101, thereby pressing the reel in the axial direction and rotating the case cover. Since it is restrained, it is impossible to perform the operation simply and quickly with one hand, for example. Moreover, it takes a certain amount of arm force to press the reel in the axial direction by rotating the case cover.
[0006]
The present invention has been made under the circumstances as described above, and a technical problem thereof is to further facilitate an operation for restraining the rotation of the reel during the exchange. .
[0007]
[Means for Solving the Problems]
As a means for effectively solving the technical problem described above, the reel lock mechanism of the ink brush according to the present invention is such that the brake piece on the outer surface of the spool case is rotatable about an axis substantially parallel to the axis of the reel. The outer peripheral cam surface of the brake piece is contactable with the outer peripheral surface of one side of the reel exposed from the bobbin winding case, and the distance from the shaft is different from one side in the circumferential direction centering on the shaft. The contact point of the outer circumferential cam surface is the circumferential direction when the outer circumferential cam surface is brought into contact with the one outer circumferential surface with respect to rotation in the winding direction of the reel. Friction torque is received in the direction of movement from one side toward the other side . That is, according to this reel lock mechanism, the rotation of the reel in the yarn winding direction can be constrained by appropriately rotating the brake piece and bringing the outer peripheral cam surface into contact with the one outer peripheral surface of the reel. That is, for the rotation of the reel in the yarn winding direction, the brake piece brought into contact with the outer peripheral surface of the reel receives friction torque in the direction of moving the contact position of the outer peripheral cam surface from the small diameter side to the large diameter side. Along with this, the pressure contact force of the brake piece against the outer peripheral surface of one side of the reel automatically increases, and the rotation of the reel is surely stopped.
[0008]
More preferably, in the present invention, the brake piece is attached in the vicinity of the main body case on the outer side surface of the bobbin winding case, and the rotation of the brake piece in the direction away from the outer peripheral surface on one side of the reel is restricted to a constant angle. In this way, the operation of rotating the brake piece for restraining or releasing the reel can be performed only with one hand having the ink brush, which is very convenient.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a plan view showing a preferred embodiment of the present invention together with the ink brush, FIG. 2 is a cross-sectional view taken along the line II-II ′ of FIG. 1, and in these drawings, reference numeral 10 denotes a body case, Reference numeral 20 denotes a bobbin winding case, and reference numeral 30 denotes a reel rotatably accommodated in the bobbin winding case 20. A cylindrical outer joint 11 protrudes from one end of the main body case 10, and a cylindrical inner joint that can be inserted into the inner periphery of the outer joint 11 at a part of the outer periphery of the bobbin case 20 in the circumferential direction. The main body case 10 and the bobbin case 20 are detachable from each other and inserted into the outer joint portion 11 by rotating the inner joint portion 21 in a predetermined direction. It is connected with the state which can be rotated around.
[0010]
In the main body case 10, a black chamber 10 </ b> S filled with a sponge 12 as a ink penetrating member is formed. The black chamber 10 </ b> S is a normal case in the main body case 10 in order to refill the sponge 12 with ink. It can be opened and closed by a cover 13 detachably fitted to the upper portion. A thread insertion tube 14 projecting into the ink chamber 10S is provided on the inner periphery of the end of the main body case 10 on the side of the spool case 20, and the end opposite to the spool case 20 is directed toward the interior of the ink chamber 10S. A funnel-shaped yarn feeding port 15 is provided.
[0011]
The reel 30 in the bobbin winding case 20 has a reel main body 31, and the ink strike thread 1 wound around the reel main body 31 contacts the sponge 12 soaked with ink through the thread insertion tube 14 and the ink chamber 10S. Then, it is led out of the main body case 10 from the yarn delivery port 15. Further, a thread presser lever 16 is rotatably attached to the cover 13 via a shaft 17. When the outer end portion 16a is pushed with a finger, the lever 16 pushes the shaft 17 as shown by a broken line in FIG. The ink drum 1 is rotated about the center and the ink end yarn 16 passing through the ink chamber 10S and the sponge 12 in which the ink ink penetrates are forcibly pressed to sufficiently adhere the ink ink to the ink strike yarn 1. Note that reference numeral 13 a in FIG. 2 is a seal for preventing ink leakage provided on the cover 13.
[0012]
A karuko 2 for sticking the ink-striking material 1 and fixing the ink-striking thread 1 is connected to the feeding end of the ink-striking thread 1 led out of the main body case 10 from the thread-feeding port 15. ing. The spar 2 is engaged with the thread delivery port 15 in a semi-contained state as indicated by a two-dot chain line in FIG.
[0013]
The bobbin winding case 20 and the inner joint portion 21 integrated therewith are divided into two parts, that is, an upper half case member 20A and a lower half case member 20B. The upper half case member 20A and the lower half case member 20B engage the engaging protrusions 22 and 23 that protrude from the inner joint portion 21 at symmetrical positions in the circumferential direction of 180 °, respectively, and the inner portion divided vertically. The joint portion 21 is assembled into a shape as a bobbin case 20 by fitting an O-ring 25 made of rubber into a base portion 24 having a large diameter and binding the same.
[0014]
The reel 30 has a spring core 32 incorporated in a substantially concentric and relatively rotatable state on the inner periphery of the reel body 31, and one end fixed to the reel body 31 and the other end fixed to the spring core 32. A spiral spring 33 that urges the main body 31 in the winding direction of the black ink thread 1 is provided. The reel body 31 has a circular window formed on the inner peripheral portion of the upper half case member 20 </ b> A with a winding handle 34 formed on the inner peripheral portion on one side in the axial direction for winding the black ink thread 1 by manual rotation. A charge handle 35 is formed at the end of the spring core 32 facing away from the take-up handle 34 and is formed on the inner peripheral portion of the lower half case member 20B. Is exposed to the outside.
[0015]
A ratchet gear (not shown) is formed on the outer peripheral surface of the insertion portion of the charge handle 35 and is engaged with a ratchet claw (not shown) of an annular ratchet member 36 disposed on the outer periphery of the charge handle 35. The (charge handle 35) can rotate only with respect to the ratchet member 36 in the accumulating direction of the spiral spring 33. Further, the abutting protrusion 36a formed at one place in the circumferential direction of the ratchet member 36 is either one of the projected protrusions 37a and 37b that are provided at the 180 ° symmetrical position in the circumferential direction of the annular clutch member 37. It has come to be confronted. The clutch member 37 is pressed in one direction by a coil spring 38. Therefore, normally, the ratchet member 36 is prevented from rotating when its abutting projection 36a abuts one of the abutting projections 37a of the clutch member 37. Has been.
[0016]
Therefore, when the reel body 31 is rotated in the feeding direction (counterclockwise direction in FIG. 1) of the ink strike thread 1, the ratchet gear on the outer peripheral surface of the charge handle 35 is prevented from rotating around the clutch member 37. Engagement with the ratchet pawl of the member 36 prevents rotation of the spring core 32 in the feeding direction, so that the spiral spring 33 is wound around the spring core 32 and gradually accumulates energy. Further, in a state in which the ink strike thread 1 is completely wound up until the karuko 2 is locked to the thread delivery port 15, the charge handle 35 is moved in the same direction as the thread winding direction (clockwise direction in FIG. 1). When rotated, the reel body 31 is prevented from rotating in the take-up direction due to the karuko 2 being locked to the yarn feeding port 15, and the charge handle 35 is also rotated in the opposite direction. Since it is blocked, the spiral spring 33 can be stored arbitrarily.
[0017]
Normally, one of the collision protrusions 37a of the clutch member 37 that is abutting with the abutting protrusion 36a of the ratchet member 36 causes the clutch member 37 to protrude from a small hole on the lower surface of the lower half case member 20B. By displacing the coil spring 38 in the compression direction (rightward direction in FIG. 2) by manual operation of 37c, the collision protrusion 36a is disengaged. For this reason, the ratchet member 36 rotates together with the charge handle 35 (spring core 32) engaged with the ratchet member 36 in the biasing direction by the spiral spring 33, and when the ratchet member 36 rotates 180 °, Stops by colliding with the mating protrusion 37b. Next, when the clutch member 37 is returned to the normal position by the urging force of the coil spring 38, the other collision projection 37b is disengaged from the collision projection 36a, so that the ratchet member 36 has the charge handle 35 (spring core). 32) together with the spiral spring 33, the rotation is again performed, and when the rotation is rotated 180 °, the abutting protrusion 36a is engaged with the one of the abutting protrusions 37a again to stop. That is, by repeatedly repeating the operation of the clutch member 37 through the clutch lever 37c, the spring core 32 rotates intermittently by 180 ° in a direction to reduce the urging force of the spiral spring 33. The biasing force of the spring 33 can be arbitrarily reduced or completely released.
[0018]
A tube shaft 26 that is substantially parallel to the axis of the reel 30 protrudes from the upper case member 20A of the bobbin winding case 20 on the main body case 10 side, that is, in the vicinity of the inner joint portion 21. A brake piece 3 which is a main body of the reel lock mechanism is rotatably attached. That is, the brake piece 3 has a substantially fan shape as shown in the exploded perspective view of the main part of FIG. 3, and has a boss part 3a and an upper surface protruding part 3b for rotating with fingers. The boss portion 3 a is inserted into the tube shaft 26 and is prevented from coming off by a bolt 28 screwed into a female screw hole 26 a on the inner periphery of the tube shaft 26 via a washer 27. The outer peripheral cam surface 3c of the brake piece 3 can come into contact with the outer peripheral surface 34a of the take-up handle 34 of the reel 30 exposed from the upper half case member 20A. The distance from the shaft center is formed in a curved surface shape that gradually increases in the clockwise direction around the tube shaft 26 in FIG.
[0019]
A concave portion 29 is formed in the upper half case member 20A of the bobbin winding case 20 in the vicinity of the mounting portion of the brake piece 3, and as shown by a one-dot chain line in FIG. 4, the winding handle 34 moves away from the outer peripheral surface 34a. The rotation angle of the brake piece 3 in the clockwise direction is regulated by the recess 29. For this reason, the upper surface protruding portion 3b of the brake piece 3 is always located within a predetermined range, and the rotation operation of the brake piece 3 by pushing (or pulling) it toward the take-up handle 34 with fingers is very easy. Be able to.
[0020]
The hooking protrusions 22 and 23 that are hinges when assembling the upper half case member 20A and the lower half case member 20B of the bobbin winding case 20 have a square shape in combination, and the pointed end portion 23a of the hooking protrusion 23 is In addition, the ink cartridge is positioned on a vertical line passing through the yarn supply port 15 when the ink cartridge is suspended by the ink drawing yarn 1 drawn out from the yarn supply port 15 of the main body case 10. Therefore, the ink brush can be used as a downward swing using the tip 23a of the hooking projection 23 as an instruction means.
[0021]
In the case of the above-described ink brush, as in the conventional case, the ink brush 1 is moved by the moving distance of the ink brush by moving the ink brush to a predetermined position after piercing the karuko 2 to the starting point of the ink brush, and in the process The inking process is performed by flicking the inked thread 1 to which the ink is applied toward the surface to be inked with a finger. After completion of the inking operation, if the karuko 2 is pulled out of the surface to be inked (not shown) by forcibly pulling the inked yarn 1 or the like, the spiral spring accumulated when the inked yarn 1 is fed out. The reel main body 31 is rotated in the yarn winding direction by the urging force of 33, so that the black ink thread 1 is placed on the reel main body 31 until the karuko 2 is locked to the yarn feeding port 15 of the main body case 10. It is automatically wound up.
[0022]
When fixing the rotation of the reel 30 in the winding direction due to the urging force of the spiral spring 33 for exchanging the karuko 2, etc., the brake piece 3 is moved from the position indicated by the one-dot chain line in FIG. is rotated in the arrow R ₂ direction by extruding the parts 3b, may in the outer circumferential cam surface 3c only by contact with the outer peripheral surface 34a of the take-up wheel 34 of the reel 30. That is, the reel 30 is rotating force of the arrow R ₁ direction in FIG. 4 by the spiral spring 33 (clockwise) is energized, the rotational force, the brake piece through the contact point P of the outer circumferential cam surface 3c 3 is caused to generate a torque in the direction of the arrow R ₂ so that the contact point P is moved from the small diameter side to the large diameter side of the outer peripheral cam surface 3c. For this reason, the pressure contact force F of the brake piece 3 with respect to the outer peripheral surface 34a of the winding handle 34 increases, and the pressure contact force F increases as the rotational force of the reel 30 in the direction of the arrow R ₁ increases. Rotation can be reliably restrained. To release the restraint, it tied up from the outer peripheral surface 34a of the take-up wheel 34 and the outer circumferential cam surface 3c of the brake shoe 3 by pulling the upper surface projections 3b with fingers in the direction opposite to the arrow R _2.
[0023]
In addition, when the ink brush is hung with the ink thread 1 drawn out to an appropriate length and used as a swinging swing, the rotation of the reel 30 is restricted as described above. In this case, the torque applied to the reel 30 in the direction in which the reel 30 is unwound (counterclockwise in FIG. 1) generated by the weight of the ink brush and the spiral spring 33 that has been stored by pulling out the ink thread 1 to a required length. Since the torque in the yarn winding direction due to the force cancels each other, the rotation of the reel 30 can be sufficiently restrained even if the pressure contact force F of the brake piece 3 against the outer peripheral surface 34a of the winding handle 34 is weak.
[0024]
【The invention's effect】
As described above, according to the reel lock mechanism of the ink brush according to the present invention, the outer cam surface of the brake piece is used when replacing the edge of the ink hammer or using the ink brush as a downward swing. The rotation of the reel can be reliably restrained only by bringing the reel into contact with the outer peripheral surface of one side of the reel, and the rotation operation of the brake piece for that purpose can be performed easily and quickly with only one hand having the ink brush.
[Brief description of the drawings]
FIG. 1 is a plan view showing a preferred embodiment of a reel lock mechanism according to the present invention together with the entire ink brush.
2 is a cross-sectional view taken along the line II-II ′ of FIG.
FIG. 3 is an exploded perspective view of a main part in the embodiment.
FIG. 4 is an explanatory diagram showing the operation of the embodiment.
FIG. 5 is a schematic cross-sectional view showing the state of use of a conventional ink brush.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Inked thread 2 Karuko 3 Brake piece 3c Outer peripheral cam surface 10 Main body case 12 Sponge
20 Bobbin case 26 Tube axis (axis)
30 reel 33 spiral spring 34a outer peripheral surface (one side outer peripheral surface)

Claims (2)

A reel (30) rotatably accommodated in a thread winding case (20) is urged in a thread winding direction by a spiral spring (33) incorporated in the inner periphery thereof, and the reel body (31) of the reel (30). In the ink sump where the sumi thread (1) wound around is passed through the ink penetrating member (12) in the main body case (10) extending from the spool case (20),
A brake piece (3) is rotatably attached to an outer surface of the spool case (20) around an axis (26) substantially parallel to the axis of the reel (30),
The outer peripheral cam surface (3c) of the brake piece (3) can come into contact with one outer peripheral surface (34a) of the reel (30) exposed from the bobbin winding case (20), and from the shaft (26). A radial distance is formed so as to gradually increase from one circumferential direction around the axis (26) toward the other side, and the outer circumferential cam surface (3c) with respect to rotation in the winding direction of the reel (30). ) Is brought into contact with the one outer peripheral surface (34a), the contact point (P) of the outer peripheral cam surface (3c) receives a friction torque in a direction in which it moves from one circumferential side to the other. The reel lock mechanism of the ink brush characterized by being a thing.   A brake piece (3) is attached in the vicinity of the main body case (10) on the outer surface of the spool case (20), and the brake piece (3) in a direction away from the one outer peripheral surface (34a) of the reel (30). 2. The reel lock mechanism of the ink brush according to claim 1, wherein the rotation is restricted to a constant angle.

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