JPH11208742A - Rotary type rod-like article delivering tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the operability by providing the gentle thread of a female screw of an inner shaft, and forming an expanding slot in a large diameter part at a rear end of a slider to easily idle the slider relative to the inner shaft even when the slider to hold a rod-like article both at the highest position and the lowest position is subjected to excessive rotation. SOLUTION: A rotary type rod-like article delivering tool comprises a forward shaft 2 which is rotatably provided on a rear shaft 1, an inner shaft 3 which is provided inside the forward shaft 2 and engaged with the rear shaft 1 in a jointly rotatable manner, and a slider 4 which has a large diameter part 44 provided with a male screw part 46 to be screwed with a female screw part 32 provided in the inner shaft 3, provided with a receiving part 41 to hold a rod-like article at a tip part and non-rotatable relative to the forward shaft 2 though slidable. In addition, an expanding slot 45 extending outwardly in the longitudinal direction is formed in the large diameter part 44 of the rear part of the slider 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary rod feeding device, and more particularly to a rotary rod feeding device for sequentially feeding, by rotating operation, cosmetics such as eyeliners and stationery rods such as eraser, glue, writing core and the like. About the tool.

[0002]

2. Description of the Related Art Conventionally, various types of rods such as an eyeliner have been proposed which are housed in a shaft and are appropriately fed out at the time of use. For example, a rod described in Japanese Utility Model Laid-Open Publication No. 64-55816 is disclosed. is there.

[0003]

However, all of these conventional products have a large number of parts, and in particular, since the slider and the center shaft are screwed together, it is difficult to form the center shaft by forcibly removing it and to assemble the same. It was troublesome and the operability was not good.

Further, since a large gap is formed between the inner periphery of the front shaft and the rod-shaped object attached to the receiving portion at the front end of the slider, there is a possibility that the slider and the rod-shaped object rattle during operation.

[0005] Furthermore, it is desired that the slider idles relative to the central shaft at the uppermost and lowermost positions of the central shaft from the viewpoint of parts protection. However, the idle rotation function is not perfect, and therefore, when the slider is forcibly rotated, it is uncomfortable. In addition to the generation of noise, there is a possibility that the members may be damaged in extreme cases.

Therefore, the present invention has solved the above-mentioned conventional disadvantages, has a small number of parts, is easy to manufacture and assemble those parts, and has a slider which holds a rod-like object at the uppermost and lowermost positions of the center shaft. To provide a rotary rod feeder excellent in operability, in which the slider easily rotates around the center shaft even if it is forcibly rotated, so that there is no risk of damage to parts and the rod does not rattle during operation. It is the purpose.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, a rotary rod feeder according to the present invention has a front shaft rotatably provided on a rear shaft, and a rear shaft provided in the front shaft and provided in the rear shaft. A central shaft rotatable integrally with the connecting means, a large-diameter portion provided with an external thread provided in the central shaft and screwed with a screw, and a receiving portion for holding a rod-shaped object at a tip portion. The slider comprises a slider slidable in the longitudinal direction but not rotatable with respect to the front axis, and a large groove at the rear of the slider is formed with a split groove extending outward in the longitudinal direction.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a rotary rod feeding device according to an embodiment of the present invention. FIG. 1 is a vertical cross-sectional view showing a rotary rod feeding device of the present invention. In the drawing, a front shaft 2 is rotatably provided on a bottomed rear shaft 1. That is, as shown in FIG.
An annular groove 12 is provided on the inner wall slightly separated from the chamfered portion 11. In the annular groove 12, three projections 22 provided substantially at the center of the front shaft 2 to be described later are engaged.

As shown in FIGS. 2 and 3, six fitting ridges 13 (connection means) are formed on the inner periphery of the intermediate portion of the rear shaft 1 toward the opening direction of the rear shaft 1. A sharp guiding portion 13a is provided at the tip of the fitting ridge 13.

On the other hand, as shown in FIG. 4, a step portion 21 is formed on the outer periphery of the intermediate portion of the front shaft 2, and three convex portions 22 and an annular groove 23 are provided on a rear outer wall of the step portion 21. Have been. As shown in FIG. 1, the tip of the rear shaft 1 is rotatably abutted on the step 21 of the front shaft 2, and the elastic O-ring 6 (FIG. 1) is fitted in the annular groove 23.

As can be seen from the cross-sectional views of FIGS. 5 and 6, the inside of the front shaft 2 has a rod-shaped object insertion hole 2 at the center.
4 and a cross-shaped guide groove 25 connected to the insertion hole 24
(Rotation preventing means). In the guide groove 25, protrusions of receiving portions of the slider 4 described later are arranged and engaged with each other to lock the rotation. Further, since the guide is guided by the rod guide 26 as described later, there is no backlash. Further, a chamfered portion 27 is formed inside the rear end opening of the front shaft 2, and an annular groove 28 is provided on the inner periphery of the chamfered portion 27 so as to be separated from the chamfered portion 27.

Further, a center shaft 3 as shown in FIGS. 7 to 9 is inserted and fixed in the rear shaft 1. To elaborate,
On the outer periphery of the rear end of the center shaft 3, six fitting protrusions 31 (connection means) each having a guide portion 31 a also having a sharp tip for engaging and connecting with the fitting protrusion 13 of the rear shaft 1. Is formed.

Further, a double thread 32 having a relatively low thread is formed in the center shaft 3. The thread of the female screw 32 is formed on a gentle slope 32a descending forward so that the rear side can be easily pulled out. Reference numeral 33 in the figure denotes three convex portions for engaging with the annular groove 28 of the front shaft 2.

FIG. 10 shows the female screw 32 of the center shaft 3 in FIG.
If the chamfered portion 32b is formed by further chamfering the rear side of the appropriate number (two in this example) of the threads from the front end side of the center shaft 3 among these internal threads 32, When the slider 4 described later reaches the uppermost position, the slider 4 easily spins, and there is an advantage that the male screw 46 of the slider 4 and the female screw 32 of the central shaft 3 do not hit each other to generate an unpleasant noise.

FIGS. 11 to 14 show the slider 4. The slider 4 has four holding pieces 42 and an engaging projection 43 (rotation stopping means) at its front portion for receiving a rod-like object. ), And a large-diameter portion 44 as a stopper at the rear end to prevent the slider 4 from falling off from the center shaft 3. And this large diameter part 4
A pair of split grooves 45 are formed opposite to each other in the longitudinal direction from the open ends of the four. Further, an external thread 46 is formed on the outer wall of the large diameter portion 44.

An assembling procedure will be described so that the rotary rod feeding device having such a configuration can be more easily understood. First, when the large-diameter portion 44 at the rear of the slider 4 is press-fitted from the front portion of the center shaft 3, the cut groove 45 of the large-diameter portion 44 bends radially inward and is easily inserted. During subsequent press-fitting, the slider 4 can be easily set in the center shaft 3 because the height of the thread of the internal thread 32 of the center shaft 3 is relatively low and the slope 32a is formed on the front side. At this time, the bottom portion of the receiving portion 41 of the slider 4 is exactly positioned at the tip of the center shaft 3.

Next, when the assembly of the center shaft 3 and the slider 4 is press-fitted from behind the front shaft 2, the annular projection 33 on the outer periphery of the center shaft 3 is fitted and fixed in the annular groove 28 in the front shaft 2.
In this state, the fitting projection 31 of the center shaft 3 projects from the rear portion of the front shaft 2. Then, the annular groove 2 for ring storage of the tip shaft 2
Attach an elastic O-ring 6 to 3 and insert these assemblies through an opening at the front of the rear shaft 1.

At this time, the guiding portion 31a of the fitting ridge 31 formed outside the rear end of the center shaft 3 and the guiding portion 13a of the fitting ridge 13 formed on the intermediate inner periphery of the rear shaft 1 are mutually connected. It is guided and fitted and locked. The rod 5 may be set on the receiving portion 41 of the slider 4 in an appropriate step of the assembling process.

The operation of the rotary rod feeding device according to the above embodiment will be described below. First, in order to project the rod 5 in the state of FIG. 1 in use, for example, the front shaft 2 is fixed with fingers and the rear shaft 1 is rotated. When the rear shaft 1 is rotated, the rear shaft 1 and the center shaft 3 are integrally fixed by the fitting ridges 13 and 31, respectively, so that the center shaft 3 is also rotated.

When the center shaft 3 is rotated, the slider 4 screwed with the center shaft 3 also attempts to rotate. However, the engaging projection 43 of the receiving portion 41 of the slider 4 is formed inside the front shaft 2 in the longitudinal direction. The rotation is locked because it is engaged in the guide groove 25. The rods do not rattle. Therefore, the slider 4 can be used by being advanced forward without rotating and projecting the bar 5 from the opening at the tip of the front shaft 2. In this case, since the engaging projection 43 of the receiving portion 41 of the slider 4 is engaged in the guide groove 25 formed in the longitudinal direction inside the front shaft 2, there is also an advantage that the rod-shaped object 5 does not rattle.

In order to store the rod 5 after use, if the front shaft 2 is rotated in the opposite direction to the above, the slider 4 is retracted and the rod 5 can be stored. When the rod 5 has been consumed, the assembly of other parts may be removed from the rear shaft 1 and a new cassette of the rod 5 may be set. In this case, in particular, in the case of a stick 5 such as cosmetics, the stick can be replaced without directly touching the stick 5 with a fingertip, which is extremely sanitary.

Although not shown, the internal thread 3 of the center shaft 3 is not shown.
If it is difficult to forcibly remove the ridge when it is desired to increase the height of the ridge, forming at least one forcibly removing slit in the longitudinal direction from the front end of the center shaft 3 has an advantage that the core pin can be easily removed.

[0023]

The present invention is embodied in the form described above, and has the following effects. First, since the thread of the female screw of the center shaft was loosened and a split groove was formed in the large diameter portion at the rear end of the slider, the slider holding the rod at the uppermost and lowermost positions could not be rotated with respect to the center shaft even by excessive rotation. Since the slider easily spins, there is an effect that the operability is excellent.

Furthermore, since the number of parts is small and the thread of the female thread is formed in a gentle shape, it is possible to form the center shaft by forcible removal, thereby facilitating the manufacture of the parts and dividing the center shaft into a large diameter portion at the rear end of the slider. Since the grooves are formed, there is an effect that assembly of parts is simple.

Further, since the protrusion of the receiving portion of the slider engages with the guide groove of the front shaft to prevent rotation, there is also an effect that the rod-shaped object does not rattle during operation.

Further, when the rod-shaped object is consumed,
Except for the rear axle, all other parts can be replaced as a cassette, so especially in the case of cosmetics such as eyeliners, the fingertip can be replaced without directly touching the stick-shaped object, which is extremely hygienic. There is also.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a rotary rod feeding device according to an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view showing only a rear shaft of FIG. 1;

FIG. 3 is an enlarged sectional view taken along line AA of FIG. 2;

FIG. 4 is a longitudinal sectional view showing only a front shaft of FIG. 1;

FIG. 5 is a transverse sectional view taken along the line BB of FIG. 4;

FIG. 6 is an enlarged sectional view taken along line CC of FIG. 4;

FIG. 7 is a longitudinal sectional view showing only a center shaft of FIG. 1;

FIG. 8 is a sectional view taken along the line DD of FIG. 7;

FIG. 9 is a sectional view taken along line EE in FIG. 7;

FIG. 10 is a partial longitudinal sectional view showing a modification of the center female screw of FIG. 10;

FIG. 11 is a front view of only the slider of FIG. 1;

FIG. 12 is a plan view of the slider of FIG. 11;

FIG. 13 is a sectional view taken along the line FF of FIG. 11;

FIG. 14 is a sectional view taken along line GG of FIG. 11;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rear shaft 2 Front shaft 3 Center shaft 4 Slider 5 Bar 6 O-ring

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI B43M 11/00 B43K 23/00 H

Claims (8)

[Claims] 1. A front shaft rotatably provided on a rear shaft, a center shaft provided in the front shaft and integrally rotatable by a connecting means with the rear shaft, a screw and a screw provided in the center shaft. A slider having a large-diameter portion with a mating male screw and a receiving portion for holding a rod-shaped object at the front end, the slider being slidable in the longitudinal direction but not rotatable with respect to the front shaft. A rotary rod feeding device characterized in that a split groove extending outward in the longitudinal direction is formed in a large diameter portion at the rear of the slider. 2. The rotary rod feeding device according to claim 1, wherein the receiving portion for holding the rod of the slider has a rotation preventing means with respect to the front shaft. 3. The slider according to claim 2, wherein the rotation preventing means comprises an engaging projection formed in a longitudinal direction of an outer peripheral portion of a receiving portion of the slider and a guide groove formed in an inner peripheral portion of the front shaft. Rotary rod feeder. 4. The rotary rod feeding device according to claim 1, wherein a guide portion for guiding a rod is provided on an inner wall of the tip shaft. 5. The rotary rod feeding device according to claim 1, wherein one side of the thread of the female screw of the center shaft is formed with a slope which can be forcibly removed. 6. The rotary rod feeding device according to claim 5, wherein the other side of the thread of the female screw on the center axis of the tip end is formed of a chamfered portion at the uppermost position so that the slider can rotate more easily. 7. The rotary type according to claim 1, wherein said connection means comprises a fitting ridge formed in a longitudinal direction of an outer peripheral portion of the center shaft and a fitting ridge formed in an inner peripheral portion of the rear shaft. A rod feeding tool. 8. The rotary rod feeding device according to claim 1, wherein at least one slit is formed in the central axis from the front end in the longitudinal direction.