JP3738658B2 - Scissors - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to scissors, and more particularly to scissors provided with an operation member capable of regulating the relative rotation of a pair of blade pieces constituting the scissors as required.
[0002]
[Prior art]
In JP-A-8-252382, the relative rotation of the pair of blade pieces constituting the scissors can be restricted, while the restriction state is released to enable normal relative rotation. The scissors which can give the elasticity which performs the opening operation of a blade piece lighter with the incorporated spring member are indicated.
[0003]
The operating member has an oblong plate shape, and a connecting shaft is provided so as to penetrate the operating member and the pair of blade pieces, and the head outer end surface of the connecting shaft is provided in the operating member. It has been. Further, the operation member is configured to be fitted with a cap, and the entire operation member can be covered by the cap. This scissor moves the operation member to the base side of the blade piece, and the operation member is caught so as to straddle between the base portions of the blade pieces, that is, engages, thereby restricting the relative rotation of the blade piece. On the other hand, by releasing the hook with one of the blade pieces, the blade piece can be relatively rotated, and further, the operation member is positioned at a position where it is not caught by any blade piece, so that it is arranged in the operation member. The spring is configured to provide elasticity in the direction in which the blade piece is opened.
[0004]
[Problems to be solved by the invention]
However, in the scissors disclosed in the above-mentioned JP-A-8-252382, the operation member is configured to move in a direction crossing the connecting shaft, so that the operation member can be moved without falling off. Guide grooves must be provided. Therefore, the position of the outer surface of the operating member is higher than the head outer end surface of the connecting shaft, and the thickness of the entire operating member increases accordingly, and when the entire scissors are viewed, the area around the connecting shaft is increased. Inconvenience. In addition, a cap for covering the guide groove is also a necessary part.
[0005]
In addition, since the entire operation member moves along the blade piece, the operation area becomes large, and there is a disadvantage that even if the rotation is restricted, it is easily canceled due to mischief of the child.
[0006]
OBJECT OF THE INVENTION
The present invention has been devised by paying attention to such inconveniences, and an object of the present invention is to provide an operation member that is as thin as possible and to limit the operation area, and the rotation regulation state is inadvertent. The object is to provide scissors that are less likely to be released.
[0007]
[Means to solve the problem]
In order to achieve the above object, the present invention connects a pair of blade pieces so as to be relatively rotatable via a connecting shaft, and provides an operating member around the connecting shaft on the outer surface side of one of the blade pieces. In the scissors that selectively enable the relative rotation of the blade piece and the rotation restriction by engaging and disengaging the blade piece to the base side with a predetermined operation,
The operating member includes a base into which a connecting shaft having a head is inserted, a slide member that is supported by the base and that is movable along the extending direction of the blade piece, and is detachable from the base side of the blade piece. Consists of
The outer surface of the base is provided with a thickness that substantially matches the outer end surface of the head, and a recess for receiving the head is provided in the surface of the base so that the outer end surface of the head and the outer surface of the base are substantially aligned. And
Between the base and the slide member, there is adopted a configuration in which a display means for indicating whether the pair of blade pieces are in a relatively rotatable state or in a state in which the rotation is restricted is provided. With this configuration, it is not necessary to move the base laterally with respect to the connecting shaft, so there is no need to provide a guide groove for the movement in the base. Can be eliminated. Moreover, since the operation part is not the entire operation member but limited to the slide member, the operation area becomes relatively small when the plane area of the entire operation member is the same as that of the conventional type. We can expect to keep the regulation state stable. Further, it is possible to easily recognize visually whether or not scissors can be used. In addition, the thickness of the operation member can be made smaller than that of the conventional type so that the operation member can be thinned, and it is easy to prevent inadvertent movement of the operation member.
[0010]
The display means includes a window hole formed in the base or the slide member, and a configuration in which a color or a symbol or a protruding shaft is exposed through the window hole is also adopted. As a result, the user can recognize whether or not it can be used by a color, a character, or the like through the window hole.
[0011]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
[0012]
[First embodiment]
FIG. 1 shows a schematic front view of the scissors according to the first embodiment, and FIG. 2 shows an enlarged front view of the main part thereof. In these drawings, the scissors 10 include a first blade piece 11 and a second blade piece 12, and a closed loop type handle portion 13 attached to the base side (right side in the drawing) of each of the blade pieces 11, 12. 14, and an operation member 17 that is located on the outer surface side of the first blade piece 11 and that is mounted via a connecting shaft 15 that passes through each of the blade pieces 11 and 12.
[0013]
The handle portions 13 and 14 are made of a synthetic resin material, and the base regions of the first and second blade pieces 11 and 12 are inserted into and fixed to the front ends, that is, the left end sides in the drawing. Concave portions 20 and 21 whose surface positions are slightly depressed are formed in front inner regions of the respective handle portions 13 and 14, and the ridges 20 </ b> A and 21 </ b> A extending in the left-right direction within the surfaces of the concave portions 20 and 21. Is formed. Here, the protrusion 20A on the handle 13 side is formed slightly longer in the left-right direction than the protrusion 21A on the handle 14 side.
[0014]
The entire operation member 17 is a molded product made of a synthetic resin material, and is positioned on the outer surface side of the first blade piece 11 and is rotatably supported by the connecting shaft 15 as shown in FIGS. A base 25, a slide member 26 movable relative to the base 25, and a metal spring member 27 (see FIG. 2) mounted between the base 25 and the first blade piece 11 are provided. Configured.
[0015]
The base 25 extends along the longitudinal direction of the blade piece 11 and is provided with a substantially plate-like outer shape in plan view in which one end side is formed as an arcuate portion 30. In the base 25, a concave portion 29 is formed in an inner region of the arc-shaped portion 30, and a through hole 31 for inserting the connecting shaft 15 is formed in the concave portion 29. On the other hand, a slot hole 32 extending in the left-right direction is formed on the opposite side of the arcuate portion 30. On the upper surface of the base 25 along the slot hole 32, display means for indicating the position of the slide member 26 in three stages is provided. The convex part 34 is formed. Here, as for the convex part 34, the rightmost position indicates the rotation restricting position, the middle position indicates the normal scissor use position, and the leftmost position indicates the scissors 10 by the spring member 27. The position where the spring force is applied in the opening direction is shown. At this time, it is possible to easily identify the position by appropriately color-coding the protrusions 34 or applying appropriate printing along the protrusions 34.
[0016]
Further, as shown in FIG. 7, a groove-shaped passage 35 is formed on the lower surface side of the base 25, and the slide member 26 can be movably accommodated in the passage 35. Here, a rail 35 </ b> A is formed on the relative side wall surface constituting the passage 35, and the smooth movement of the slide member 26 is allowed. Further, as shown in FIG. 5, a long groove 38 for receiving the one end side region of the spring member 27 is formed on the lower surface of the base 25 at a position higher than the passage 35, and on the opposite side of the long groove 38. A notch 39 that avoids positional interference with the other end of the spring member 27 is formed.
[0017]
As shown in FIGS. 8 to 12, the slide member 26 is provided in a passage 35 provided in the base 25, and is provided on one end side of the slide plate 40 and is substantially semicircular in plan view. An arcuate finger rest 41 is provided. The slide plate 40 has protrusions 40A on both sides in the short width direction, and the protrusions 40A are inserted into the passage 35 in a state of riding on the rails 35A of the passage 35 (FIG. 13). reference). A projecting shaft 42 that constitutes display means together with the convex portion 34 is integrally provided at the central portion on the upper surface side of the slide plate 40. By projecting more, the slide member 26 can be prevented from coming off.
[0018]
Two notch grooves 45 and 46 that can receive the protrusions 20A and 21A formed on the handle portions 13 and 14 are formed on the lower surface side from the arc-shaped side surface portion of the finger rest portion 41, respectively. The groove length of the notch groove 45 is longer than that of the other notch groove 46. Further, the lower surface of the finger rest part 41 and the right side region in FIG. 9 of the slide plate 40 are provided with the surface position slightly above the lower surface of the slide plate 40 via the stepped portion 47, whereby the slide member 26 can move without interfering with the surfaces of the recesses 20 and 21 of the handle portions 13 and 14. A hanging protrusion 49 is formed between the base portions of the blade pieces 11 and 12 at a portion straddling the lower surface of the finger pad 41 and a part of the slide plate 40.
[0019]
As shown in FIG. 14, the spring member 27 includes a coil portion 27A, a movable side spring portion 27B extending from the coil portion 27A and received in a long groove 38 provided on the lower surface side of the base 25, and a first spring member 27B. It is comprised by the fixed side spring part 27C by which a front-end | tip part is received by the hole 50 (refer FIG. 2) formed near the base part of the 2 blade piece 12. FIG.
[0020]
As shown in FIG. 4, the connecting shaft 15 is inserted from the first shaft portion 15 </ b> A inserted from the hole 11 </ b> A formed in the first piece 11 and the hole 12 </ b> A of the second blade piece 12. It consists of a second shaft portion 15B and can be connected to each other by screwing the first shaft portion 15A into the second shaft portion 15B. Further, the thickness of the head 15C of the first shaft portion 15 corresponds to the depth of the concave portion 29 formed in the first piece 11, so that when the operating member 17 is mounted, the connecting shaft 15 , That is, the outer surface of the head 15 </ b> C substantially coincides with the outer surface of the base 25. In the spring member 27, the coil portion 27A is positioned around the axis of the connecting shaft 15.
[0021]
Next, the operation according to the first embodiment will be described. In a state where the scissors 10 are assembled, as shown in an enlarged view in FIG. 2, the base 25 constituting the operation member 17 is attached to the outer surface side of the first blade piece 11 by the connecting shaft 15. The slide member 26 can move in the left-right direction in the figure. In the spring member 27 arranged around the connecting shaft 15, the movable side spring portion 27 </ b> B is positioned in the long groove 38 of the base 25, while the tip of the fixed side spring portion 27 </ b> C is inserted into the hole 50 of the second blade piece 12. In the position.
[0022]
As shown in FIG. 2, when the slide member 26 is moved to the rightmost side, the protrusions 20 </ b> A and 21 </ b> A are received in the notch grooves 45 and 46 provided on the lower surface side of the finger pad 41. Therefore, in this state, the opening and closing of the blade pieces 11 and 12 is restricted. At this time, the projecting shaft 42 of the slide plate 40 is located on the rightmost side of the slot hole 32 and corresponds to the rightmost side of the three convex portions 34 constituting the display means. Here, when the scissors 10 are normally used, the finger pad 41 may be moved to the left side in FIG. By this movement, when the protruding shaft 42 is aligned with the position of the intermediate convex portion 34, as shown in FIGS. 15 and 16, the protrusion 21A comes out of the notch groove 46, and the blade pieces 11, 12 are moved. Can be opened and closed.
[0023]
When the slide member 26 is further moved to the left side so that the protruding shaft 42 is aligned with the position of the convex portion 34 located on the leftmost side, as shown in FIGS. Take the position where the ridge 20A comes out. At this time, the entire operation member 17 is rotated by the spring force of the spring member 27 along the extending direction of the second blade piece 12, and the tips of the blade pieces 11 and 12 according to the strength of the spring force. The space is kept apart. Therefore, in this state, if the handle portions 13 and 14 are opened and closed so as to relatively rotate the blade pieces 11 and 12, the force in the opening operation direction is reduced.
[0024]
[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIGS. In the following description, the same or equivalent components as those in the first embodiment are denoted by the same reference numerals as necessary, and the description is omitted or simplified.
[0025]
In the second embodiment, the base 25 constituting the operation member 17 is constituted by a substantially arc-shaped portion 61 in plan view and a guide portion 62 extending from the straight end surface of the arc-shaped portion 61, while the slide member 26 is The guide portion 62 is provided so as to straddle the guide portion 62 so as to be movable along the guide portion 62. The guide portion 62 is set to be smaller than the vertical width in FIG. 19 of the slide member 26, and a long groove 38 similar to that shown in the first embodiment is formed on the lower surface (back surface) side of the guide portion 62. The movable spring portion 27 </ b> B is received in the long groove 38. On the other hand, the fixed-side spring portion 27 </ b> C is positioned outside the guide portion 62, and the tip is inserted into the hole 50 of the second blade piece 12.
[0026]
The slide member 26 includes an upper surface portion 65 that is substantially flush with the outer surface (upper surface) of the arc-shaped portion 61, and side surface portions 66, 67 that are continuous with the upper and lower sides in FIG. It is formed so that the cross-sectional shape is a substantially U-shaped downward. Here, the side surface portion 66 is provided in a shape in which the left side region is cut away, and thereby the slide member 26 can move in the left-right direction without interfering with the fixed-side spring portion 27C. Further, a window hole 68 constituting a display means is formed in the upper surface portion 65. On the other hand, an appropriate coloring or printing is provided on the upper surface of the guide portion 62 in the left-right direction in FIG. 19, and when the slide member 26 is moved in the left-right direction, the color or printing surface is changed through the window hole 68. It has come to be expressed.
[0027]
In the second embodiment, since the slide member 26 is provided in a substantially U shape, the lower surface side of the right end of the slide member 26 in the figure without providing the notch grooves 45 and 46 shown in the first embodiment. The protrusions 20A and 21A can be engaged and disengaged.
[0028]
In the second embodiment, when the slide member 26 is positioned on the rightmost side, as shown in FIG. 19, the ridges 20A and 21A are located on the lower surface side of the right end of the slide member 26, and are thus hooked. The rotation of the blade pieces 11 and 12 is restricted.
[0029]
When the slide member 26 is moved by a predetermined amount to the left from the position in FIG. 19, the protrusion 21A comes off from the slide member 26 as shown in FIG. 20, and the same use as normal scissors is possible.
[0030]
When the slide member 26 is further moved to the left and positioned as shown in FIG. 20, both the protrusions 20 </ b> A and 21 </ b> A are detached from the slide member 26, and accordingly, an amount corresponding to the spring force of the spring member 27. The blade pieces 11 and 12 are opened, and the operation in the opening direction during use is reduced.
[0031]
When the slide member 26 is stopped at the three positions, the position of the slide member 26 is displayed through the window hole 68. As the display mode, for example, red, blue, and yellow color displays, and appropriate print displays such as “closed”, “open”, and “spring” modes can be considered.
[0032]
Other configurations are substantially the same as those of the first embodiment.
[0033]
【The invention's effect】
As described above, according to the present invention, since the outer surface of the operation member is provided with a thickness that substantially coincides with one end surface of the connecting shaft, the thickness of the operation member is made smaller than that of the conventional type and It is possible to make the operation member thinner. Therefore, as the thickness is reduced, the possibility of inadvertent external force being applied to the operation member is reduced, and it can be expected that the stability of the rotation restriction state is secured more than the conventional one.
[0034]
In addition, the operation member is constituted by a base and a slide member that moves relative to the base, and a recess for receiving one end surface of the connecting shaft is provided in the surface of the base so that the head end is received in the recess. The operation area is limited, and it is possible to reduce the possibility that the rotation restriction state is canceled due to mischief. In addition, since the base is not configured to move laterally with respect to the connecting shaft, it is not necessary to provide a guide groove for the movement on the upper surface of the base, and the cap for covering this can be omitted to reduce the thickness. Can be realized.
[0035]
Further, in the configuration in which the display means is provided between the base and the slide member, it is possible to easily recognize visually whether or not scissors can be used. Moreover, in the structure which provided the window hole formed in the base or the slide member as a display means, it can recognize whether it can be used with the color, character, etc. which passed through the window hole.
[Brief description of the drawings]
FIG. 1 is a front view showing an overall configuration of scissors according to an embodiment.
FIG. 2 is an enlarged front view of a main part of FIG.
FIG. 3 is an enlarged front view of a base constituting the operation member.
FIG. 4 is an exploded cross-sectional view of a base region.
FIG. 5 is an enlarged rear view of the base.
FIG. 6 is an enlarged bottom view of the base.
7 is a cross-sectional view taken along line AA in FIG.
FIG. 8 is an enlarged front view of a slide member constituting the operation member.
FIG. 9 is an enlarged bottom view of the slide member.
FIG. 10 is an enlarged rear view of the slide member.
11 is a cross-sectional view taken along line BB in FIG.
FIG. 12 is an enlarged right side view of a slide member.
FIG. 13 is an enlarged sectional view showing a combined state of the base and the slide member.
14A is a plan view of a spring member, and FIG. 14B is a front view thereof.
FIG. 15 is a front view of scissors set in a normal use state.
16 is an enlarged front view of the main part of FIG.
FIG. 17 is a front view of scissors in which a spring force acts in the direction in which the blade piece opens.
18 is an enlarged front view of the main part of FIG.
19 is a front view similar to FIG. 2, showing a modification.
20 is a front view similar to FIG. 16, showing a modification.
FIG. 21 is a front view similar to FIG. 18 showing a modification.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Scissors 11 1st blade piece 12 2nd blade piece 15 Connection shaft 15C Head 17 Operation member 25 Base 26 Slide member 29 Concave part 34 Convex part (display means)
42 Protruding shaft (display means)
68 Window (display means)

Claims (2)

A pair of blade pieces are connected so as to be rotatable relative to each other via a connecting shaft, and an operating member is provided around the connecting shaft on the outer surface side of one of the blade pieces, and the operating member is operated in a predetermined manner on the base side of the blade piece. In the scissors that selectively enable relative rotation of the blade pieces and rotation regulation by engaging and disengaging,
The operating member includes a base into which a connecting shaft having a head is inserted, a slide member that is supported by the base and that is movable along the extending direction of the blade piece, and is detachable from the base side of the blade piece. Consists of
The outer surface of the base is provided with a thickness that substantially matches the outer end surface of the head, and a recess for receiving the head is provided in the surface of the base so that the outer end surface of the head and the outer surface of the base are substantially aligned. And
Scissors characterized in that display means is provided between the base and the slide member to indicate whether the pair of blade pieces are in a relatively rotatable state or in a state where the rotation is restricted. The display means, based or include window holes formed in the slide member, the color or symbol through this window hole, or scissors according to claim 1, wherein the projecting shaft, characterized in that is exposed.

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