Ring binder
By designing a snap-fit groove and sheath snap-fit claw in the ring binding device, the relative displacement between the seat plate and the sheath is limited, which solves the problems of easy cracking of the resin sheath and insufficient pushing force, and achieves a more stable binding effect.
Patent Information
- Application Number
- CN202480002363.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Priority Date
- 2023-10-18
- Filing Date
- 2024-05-01
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2044-05-01
AI Technical Summary
Existing ring binding devices are prone to cracking when large stress is applied to the resin sheath, and the pushing force is insufficient, making it difficult to effectively engage the binding through relative displacement in the long dimension without causing the seat plate and sheath to shift.
Design a ring-type binding device, wherein the outer sides of the two base plates are provided with locking grooves, the inner sides are provided with convex and concave surfaces with protrusions, and the side plates of the sheath are provided with sheath locking claws. Through the rotational displacement of the base plates and the sheath, the top of the semi-ring portion approaches or separates, and the relative displacement in the long dimension direction is restricted by the positioning sides of the base plates and the positioning sides of the sheath.
It effectively suppresses the offset of the two seat plates and sheath in the long dimension, enhances the pushing force, avoids cracking, and is suitable for binding multiple sheets of paper.
Smart Images
Figure CN119156291B_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to a ring binder in which the rotational displacement of the two seat plates under the urging force of the sheath body causes the tips of the half-ring portions to approach and separate from each other. BACKGROUND
[0002] As such a ring binder used in the past, for example, the configuration shown in Patent Document 1 and the like can be cited. That is, in the ring binder of the past, the two seat plates (half plates) and the sheath body are configured from resin (hard plastic). A clamping groove portion is provided in the side portions of the two seat plates, and an inclined surface for clamping with the clamping groove portion is provided in the sheath body. The sheath body is disposed below the two seat plates, and the sheath body is pressed from below against the two seat plates, whereby the inclined surface is clamped in the clamping groove portion, and the two seat plates are assembled to the sheath body.
[0003] PRIOR ART DOCUMENTS
[0004] PATENT DOCUMENTS
[0005] Patent Document 1: Japanese Patent Application Publication No. 2001-239781 SUMMARY
[0006] PROBLEMS TO BE SOLVED BY THE INVENTION
[0007] When a large stress is applied to resin, cracks are generated. In the configuration of the past described above, since the sheath body is pressed from below against the two seat plates, whereby the inclined surface is clamped in the clamping groove portion, in order to suppress cracks in the sheath body or the inclined surface, it is difficult to lengthen the inclined surface, and thus the two seat plates and the sheath body are easily separated upward and downward.
[0008] Further, the sheath body made of resin has a tendency to be weak in urging force, as compared with the sheath body made of metal. Although it is possible to increase the urging force by lengthening the inclined surface of the sheath body in the past configuration, in the configuration in which the sheath body is assembled to the two seat plates from below, it is still difficult to lengthen.
[0009] As another assembly method, it is conceivable to clamp the inclined surface of the sheath body in the clamping groove portion of the two seat plates by relative displacement of the two seat plates and the sheath body in the longitudinal direction. If this assembly method is employed, it is possible to lengthen the inclined surface, and it is possible to suppress the upward and downward separation of the two seat plates and the sheath body, and it is possible to ensure the urging force. However, in this case, it is necessary to enable the relative displacement of the two seat plates and the sheath body in the longitudinal direction, and thus the two seat plates and the sheath body are easily displaced in the longitudinal direction.
[0010] The present application was made to solve the problems described above, and one object thereof is to provide a ring binder in which the displacement of the two seat plates and the sheath body in the longitudinal direction is suppressed even if the sheath body is clamped to the two seat plates by relative displacement in the longitudinal direction.
[0011] Solution to the problem
[0012] The ring binder of the present application is configured in one embodiment as follows: a ring binder having two seat plates of elongated shape extending adjacent to and parallel to each other; a plurality of half-ring portions provided on the surface side of the two seat plates; and a sheath body disposed on the back side of the two seat plates and sandwiching the two seat plates from the outside in the width direction, holding the two seat plates against each other, and the sheath body being of elongated shape and composed of a material including a resin material, with the rotation displacement of the two seat plates under the pressing force of the sheath body, the tips of the half-ring portions approaching and separating from each other, wherein a clamping groove portion extending in the long dimension direction is provided on the outside of each of the two seat plates, a seat plate end portion locking claw disposed on both ends in the long dimension direction of the two seat plates is provided inside the clamping groove portion, the seat plate end portion locking claw has a seat plate inclined side surface disposed on the inside in the long dimension direction of the seat plate and extending obliquely with respect to the width direction, and a seat plate positioning side surface disposed on the outside in the long dimension direction of the seat plate and extending in the width direction, the sheath body has a back plate portion, a side plate portion rising from both side edges of the back plate portion, and a sheath clamping claw protruding from the tip portions of each of the side plate portions toward the direction of approaching each other and inserted into the clamping groove portion, a sheath end portion clamping claw disposed on both ends in the long dimension direction of the sheath body is provided on the sheath clamping claw, the sheath end portion clamping claw has a sheath inclined side surface disposed on the outside in the long dimension direction of the sheath body and extending obliquely with respect to the width direction, and a sheath positioning side surface disposed on the inside in the long dimension direction of the sheath body and extending in the width direction, the seat plate inclined side surface and the sheath inclined side surface are configured to allow the seat plate end portion locking claw to pass over the sheath clamping claw and the sheath end portion locking claw, and the seat plate positioning side surface and the sheath positioning side surface are configured to restrict the relative displacement of the two seat plates and the sheath body in the long dimension direction by abutting against each other.
[0013] Effects of the invention
[0014] According to one embodiment of the ring binder of the present application, the seat plate positioning side surface and the sheath positioning side surface are configured to restrict the relative displacement of the two seat plates and the sheath body in the long dimension direction by abutting against each other, so even in the case where the sheath body is clamped to the two seat plates by the relative displacement in the long dimension direction, the displacement of the two seat plates and the sheath body in the long dimension direction can be suppressed. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 is a front view showing the ring binder of the embodiment of the present application.
[0016] Figure 2 is a plan view showing the ring binder of Figure 1 .
[0017] Figure 3is a bottom view of the ring binder of Figure 1
[0018] Figure 4 is a left side view of the ring binder of Figure 1
[0019] Figure 5 is a right side view of the ring binder of Figure 1
[0020] Figure 6 is a perspective view of the ring binder of Figure 1
[0021] Figure 7 is a perspective view of the ring binder of Figure 6
[0022] Figure 8 is a front view of the first seat plate of Figure 1
[0023] Figure 9 is a top view of the first seat plate of Figure 8
[0024] Figure 10 is a bottom view of the first seat plate of Figure 8
[0025] Figure 11 is a sectional view of the first seat plate along the line XI-XI of Figure 8
[0026] Figure 12 is a sectional view of the first seat plate along the line XII-XII of Figure 8
[0027] Figure 13 is a sectional view showing a state in which the protruded convex surface of Figure 11 is fitted to the protruded concave surface of the second seat plate in a closed state
[0028] Figure 14 is a sectional view showing a state in which the protruded convex surface of Figure 11 is fitted to the protruded concave surface of Figure 12 in an open state
[0029] Figure 15 is a sectional view of the ring binder along the line XVa-XVa of Figure 1
[0030] Figure 16 is a rear view of the first seat plate of Figure 1
[0031] Figure 17 is a sectional view along the line XVII-XVII of the first seat plate of Figure 16
[0032] Figure 18 is a perspective view of the sheath of Figure 1
[0033] Figure 19 is a sectional view of the sheath in the plane XIX of Figure 18
[0034] Figure 20 is a sectional view of the sheath in the plane XX of Figure 18
[0035] Figure 21 is a plan view of the sheath of Figure 18
[0036] Figure 22 is an explanatory view showing the case where the sheath of Figure 1 is inserted into the first seat plate and the second seat plate from one end thereof.
[0037] Figure 23 is an explanatory view showing the relationship between the seat plate end locking claw and the sheath end engaging claw in the region XXIII of Figure 22
[0038] Figure 24 is an explanatory view showing the case where the sheath of Figure 1 is inserted into the first seat plate and the second seat plate from the other end thereof.
[0039] Figure 25 is an explanatory view showing the relationship between the seat plate end locking claw and the sheath intermediate engaging claw in the region XXV of Figure 22 DETAILED DESCRIPTION
[0040] The present application will now be described with reference to the drawings, which illustrate a mode of carrying out the application. The present application is not limited to the embodiments, and the constituent elements thereof can be modified within the scope of the gist thereof to be embodied. Further, various applications can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiments. For example, several constituent elements can be deleted from the overall constituent elements shown in the embodiments. Furthermore, the constituent elements of different embodiments can be appropriately combined.
[0041] Figure 1 is a front view showing a ring binder of an embodiment of the present application, Figure 2 is a plan view showing the ring binder of Figure 1 Figure 3 Figure 1 a bottom view of the ring binder, Figure 4 is a left side view of the ring binder of Figure 1 , Figure 5 is a right side view of the ring binder of Figure 1 . Further, Figure 6 is a perspective view of the ring binder of Figure 1 from an oblique upper side, Figure 7 is a perspective view of the ring binder of Figure 6 from the outside and the inside of which is reversed. Note that the rear view of the ring binder is symmetrically represented with the front view.
[0042] Figures 1 to 7 The ring binder shown in FIG. 1 is, for example, an apparatus for binding a plurality of sheets of paper, etc. having a plurality of holes punched therein. As shown in FIG. 2, the ring binder has two seat plates 1, 2, a plurality of half ring portions 3, and a sheath 4. Figures 1 to 7
[0043] The two seat plates 1, 2 extend adjacent to and parallel to each other. The direction in which the two seat plates 1, 2 extend is sometimes referred to as a long dimension direction Dl. The two seat plates 1, 2 are sometimes referred to as a first seat plate 1 and a second seat plate 2.
[0044] The plurality of half ring portions 3 are respectively integrally provided to the first seat plate 1 and the second seat plate 2, and extend toward the surface side of the first seat plate 1 and the second seat plate 2. The plurality of half ring portions 3 are arranged separately from each other in the long dimension direction Dl in each of the first seat plate 1 and the second seat plate 2. The half ring portions 3 provided to the first seat plate 1 are provided in a manner so as to face the half ring portions 3 provided to the second seat plate 2. The number of the half ring portions 3 provided to each of the first seat plate 1 and the second seat plate 2 is the same. The number of the half ring portions 3 can be arbitrarily changed according to the length of the first seat plate 1 and the second seat plate 2, etc., and can be an even number or an odd number. In the ring binder of the present embodiment, six half ring portions 3 are provided to each of the first seat plate 1 and the second seat plate 2. In each of the first seat plate 1 and the second seat plate 2, two half ring groups each composed of three half ring portions 3 are arranged separately from each other in the long dimension direction Dl.
[0045] The sheath 4 is long in dimension and is composed of a material including a resin material, is arranged on the back side of the first seat plate 1 and the second seat plate 2, and sandwiches the first seat plate 1 and the second seat plate 2 from the outside in the width direction D2, and holds the first seat plate 1 and the second seat plate 2 so as to be pressed against each other. The width direction D2 can be a direction orthogonal to the long dimension direction Dl.
[0046] As the material including a resin material constituting the sheath body 4, various materials can be used. As the material including a resin material, a resin derived from petroleum such as polycarbonate can be used, but a biomass plastic can also be used. The biomass plastic refers to a resin derived from paper or a plant, etc. which is not derived from petroleum. The material including a resin material can also include a material derived from paper, corn, eggshell, or shell. Note that, as the material constituting the first seat plate 1 and the second seat plate 2, the same material as the sheath body 4 can be used, or a different material from the sheath body 4 can be used. As the different material from the sheath body 4, a metal such as an iron-based material can be listed.
[0047] The ring-type binding instrument of the present embodiment is configured so that, in conjunction with the rotational displacement of the first seat plate 1 and the second seat plate 2 under the urging force of the sheath body 4, the top ends of the half-ring portions 3 each approach each other and separate from each other. The state in which the top ends of the half-ring portions 3 each approach each other is sometimes referred to as a closed state, and the state in which the top ends of the half-ring portions 3 each separate from each other is sometimes referred to as an open state. Figures 1 to 7 The ring-type binding instrument in the open state.
[0048] Knobs 5 that can be operated by a user when the first seat plate 1 and the second seat plate 2 are rotationally displaced can be provided at both ends of the first seat plate 1 and the second seat plate 2. In particular, as shown in Figure 4 and Figure 5 shown, in the open state, the rotational displacement of the first seat plate 1 and the second seat plate 2 is performed in such a manner that the top ends 5a of the knobs 5 each approach each other. The closed state can be set by rotationally displacing the first seat plate 1 and the second seat plate 2 in such a manner that the top ends 5a of the knobs 5 each separate from each other.
[0049] Next, the seat plates 1, 2 will be described with reference to Figures 8 to 17 .
[0050] Figure 8 is a front view of the first seat plate 1, Figure 1 is a plan view of the first seat plate 1, Figure 9 is a bottom view of the first seat plate 1. Figure 8 Figure 10 Figure 8 is a sectional view of the first seat plate 1 along the line XI-XI of is a sectional view of the first seat plate 1 along the line XII-XII of
[0051] is a sectional view of the first seat plate 1 along the line XIII-XIII of Figure 11 is a sectional view of the first seat plate 1 along the line XIV-XIV of Figure 8 is a sectional view of the first seat plate 1 along the line XV-XV of Figure 12 is a sectional view of the first seat plate 1 along the line XVI-XVI of Figure 8 is a sectional view of the first seat plate 1 along the line XVII-XVII of Figure 13 is a sectional view of the state in which the convex surface 60 with a protrusion of the closed state Figure 11 is fitted into the concave surface 61 with a protrusion of the second seat plate 2, Figure 14 is a sectional view of the state in which the convex surface 60 with a protrusion of the open stateFigure 11 the protruded convex surface 60 of the first seat plate 1 is fitted to Figure 12 the protruded concave surface 61 of the second seat plate 2.
[0052] Figure 15 is a cross-sectional view of the ring binder along the line XVa-XVa of Figure 1 the first seat plate 1 and the second seat plate 2 in the position of the line XVb-XVb of Figure 15 Figure 8
[0053] Figure 16 is a rear view of the first seat plate 1 of Figure 1 Figure 17 is a cross-sectional view of the first seat plate 1 along the line XVII-XVII of Figure 16
[0054] The two seat plates 1, 2, i.e., the first seat plate 1 and the second seat plate 2, can have different shapes from each other, but have the same shape in the ring binder of the present embodiment. In Figures 8 to 10 the first seat plate 1 is shown, but the second seat plate 2 has the same configuration as that of the first seat plate 1. The first seat plate 1 and the second seat plate 2 can have a line-symmetrical shape in the center thereof in the long dimension direction D1, and can be arranged so as to be reversed in the long dimension direction D1 and face each other in the state in which the ring binder as shown in Figures 1 to 7
[0055] The protruded convex surface 60 and the protruded concave surface 61 that are fitted to each other are provided on the inner side surfaces 6 of the first seat plate 1 and the second seat plate 2. The inner side surfaces 6 of the first seat plate 1 and the second seat plate 2 are surfaces that are located on the inner side in the width direction D2 and face each other in the state in which the ring binder as shown in Figures 1 to 7 Figure 11 Figure 12 As shown, opposing protrusions 60a and 61a are formed on the convex surface 60 and concave surface 61, respectively. These opposing protrusions 60a and 61a collide with each other midway through the rotational displacement of the first seat plate 1 and the second seat plate 2, overcoming the pushing force of the sheath 4 and resisting the rotational displacement. When the first seat plate 1 and the second seat plate 2 are about to rotate, the opposing protrusions 60a and 61a resist the rotational displacement, therefore, the semi-circular portion 3, which is closed by contact with each other, is not easily opened. As a result, even a large number of sheets of paper can be effectively bound. More specifically, when the opposing protrusions 60a and 61a pass each other, the distance from the fulcrum is extended compared to the case without opposing protrusions 60a and 61a, which increases the reaction force (pushing force). This is particularly useful when using sheaths 4 made of less elastic resin or the like.
[0056] like Figure 13 As shown, in the closed state, the opposing protrusions 60a and 61a are offset from each other in the thickness direction D3 of the first base plate 1 and the second base plate 2. If the first base plate 1 and the second base plate 2 are rotated from this state, then as shown... Figure 14 As shown, the opposing protrusions 60a and 61a cross each other after mating. This causes the first seat plate 1 and the second seat plate 2 to move slightly in the direction of separation, widening the sheath 4. With the increase in its elastic deformation, a greater pushing force is applied to the first seat plate 1 and the second seat plate 2. At this time, resistance to rotational displacement is generated. Therefore, unintentional opening of the semi-annular portion 3 is suppressed. Furthermore, even when moving from the open state to the closed state, resistance is generated for rotational displacement due to the mating of the opposing protrusions 60a and 61a.
[0057] The opposing protrusions 60a and 61a may protrude from a portion of the thickness direction D3 of the first seat plate 1 and the second seat plate 2 on the convex surface 60 and the concave surface 61 with protrusions. Ideally, the positions of the opposing protrusions 60a and 61a on the convex surface 60 and the concave surface 61 with protrusions in the thickness direction D3 of the first seat plate 1 and the second seat plate 2 should be determined taking into account the opening and closing positions of the semi-annular portion 3 that provides resistance with the opposing protrusions 60a and 61a.
[0058] The convex surface 60 and the concave surface 61, both with protrusions, include opposing protrusions 60a and 61a. As shown in the illustrated example, a curved surface configuration is more suitable. Furthermore, it is preferable that... Figures 11 to 14 As shown, in the thickness direction D3 of the first base plate 1 and the second base plate 2, the surfaces of each of the protruding convex surface 60 and the protruding concave surface 61 are slightly recessed on both sides of the opposing protrusions 60a and 61a, so that the opposing protrusions 60a and 61a are recessed after passing over their opposite opposing protrusions 60a and 61a.
[0059] The pair of opposing protruding portions 60a, 61a provided on each of the first seat plate 1 and the second seat plate 2 can be provided in one pair in the long dimension direction D1 of the first seat plate 1 and the second seat plate 2, but in order to give greater resistance to the rotational displacement, it is preferable to provide a plurality of pairs. Furthermore, in conjunction with this provision, the pair of protruded convex surfaces 60 and the pair of protruded concave surfaces 61 can also be provided in one pair or a plurality of pairs in the long dimension direction D1 of the first seat plate 1 and the second seat plate 2. In the illustrated scheme, in particular, as Figure 8 shown, three protruded convex surfaces 60 are provided in the region from the center position in the long dimension direction D1 of the first seat plate 1 and the second seat plate 2 to one end, and three protruded concave surfaces 61 are provided in the region from the center position in the long dimension direction D1 of the first seat plate 1 and the second seat plate 2 to the other end.
[0060] Furthermore, on each of the inner side surfaces 6 of the first seat plate 1 and the second seat plate 2, a fulcrum protrusion 62 can be provided as a rotational fulcrum of the rotational displacement thereof. In particular, as Figure 15 understood, a plurality of claw-shaped fulcrum protrusions 62 that protrude from the inner side surfaces 6 and have a gradually decreasing thickness are provided separately on the first seat plate 1 and the second seat plate 2 in the long dimension direction D1. As Figure 15 shown, the fulcrum protrusions 62 of the first seat plate 1 are sunk into the lower side of the second seat plate 2. Conversely, the fulcrum protrusions 62 of the first seat plate 1 are sunk into the lower side of the second seat plate 2. When the opening and closing operation of the semi-ring portion 3 is performed, the contact portions of the fulcrum protrusions 62 of the first seat plate 1 and the second seat plate 2 with the lower surfaces of the second seat plate 2 and the first seat plate 1 become the rotational fulcrum, bringing about the rotational displacement of the first seat plate 1 and the second seat plate 2.
[0061] Preferably, as Figure 8 shown, the fulcrum protrusions 62 are provided in the long dimension direction D1 of the first seat plate 1 and the second seat plate 2 at positions adjacent to the protruded convex surfaces 60 and the protruded concave surfaces 61. This is because, when the first seat plate 1 and the second seat plate 2 perform the rotational displacement around the rotational fulcrum of the fulcrum protrusions 62, resistance can be effectively given using the opposing protruding portions 60a, 61a adjacent to the rotational fulcrum, and the operation of the rotational displacement is further stabilized.
[0062] In particular, as Figure 16 shown, a clamping groove portion 70 extending in the long dimension direction D1 is provided on each of the outer side surfaces 7 of the first seat plate 1 and the second seat plate 2 (both the seat plates 1, 2). The outer side surfaces 7 of the first seat plate 1 and the second seat plate 2 are provided with a clamping groove portion 70 extending in the long dimension direction D1 as Figures 1 to 7The outer side in the width direction D2 in the state of the assembled ring binder is the face. The engaging groove portion 70 can be formed so as to be recessed inward in the width direction D2 from the outer face 7. In the illustrated example, both ends of the engaging groove portion 70 in the long dimension direction Dl are open. However, the end portion of the engaging groove portion 70 on one side in the long dimension direction Dl can also be closed.
[0063] As shown in particular in Figure 16 and Figure 17 , inside the engaging groove portion 70, a seat end portion locking claw 71 is provided at both end portions in the long dimension direction Dl of the first seat plate 1 and the second seat plate 2. In other words, in each of the first seat plate 1 and the second seat plate 2, a seat end portion locking claw 71 is provided at one end portion and the other end portion in the long dimension direction Dl. The position at which the seat end portion locking claw 71 is provided can be the position of the exact both ends in the long dimension direction Dl of the first seat plate 1 and the second seat plate 2, or can be a position that is inward (central side) from the both ends in the long dimension direction Dl. For example, a region from the both ends in the long dimension direction Dl of the first seat plate 1 and the second seat plate 2 to 1 / 3, more specifically 1 / 4, further specifically 1 / 5, of the full length in the long dimension direction Dl of the first seat plate 1 and the second seat plate 2 can be understood as the both end portions.
[0064] In the present embodiment, the distance Disl in the long dimension direction Dl from one end of the first seat plate 1 and the second seat plate 2 to the seat end portion locking claw 71 provided at the one end portion is made equal to the distance Dis2 in the long dimension direction Dl from the other end to the seat end portion locking claw 71 provided at the other end portion. Therefore, in the state of the assembled ring binder as shown in Figures 1 to 7 , the seat end portion locking claw 71 of the first seat plate 1 and the seat end portion locking claw 71 of the second seat plate 2 are disposed at the same position in the long dimension direction Dl (see Figure 23 and the like later). However, the distance Disl and the distance Dis2 can also be different, and the seat end portion locking claw 71 of the first seat plate 1 and the seat end portion locking claw 71 of the second seat plate 2 can also be disposed at positions offset in the long dimension direction Dl.
[0065] As shown in particular in Figure 17 , the seat end portion locking claw 71 has a seat inclined side face 71a that is disposed inward (central side) in the long dimension direction Dl of the first seat plate 1 and the second seat plate 2 and that extends obliquely with respect to the width direction D2, and a seat positioning side face 71b that is disposed outward (the side opposite the central side) in the long dimension direction Dl of the first seat plate 1 and the second seat plate 2 and that extends along the width direction D2. The position of the seat inclined side face 71a and the position of the seat positioning side face 71b are reversed between the seat end portion locking claw 71 provided at the one end portion and the seat end portion locking claw 71 provided at the other end portion.
[0066] The corner 71c where the locking claw 71 at the end of the base plate abuts against the positioning side 71b of the base plate can be an acute angle, a rounded surface, or a radius (R).
[0067] Next, while referring to Figures 18 to 21 The sheath 4 will be explained. Figure 18 It is represented by monomers. Figure 1 A three-dimensional view of the sheath 4. Figure 19 yes Figure 18 A cross-sectional view of the sheath 4 in plane XIX. Figure 20 yes Figure 18 A cross-sectional view of the sheath 4 in plane XX. Figure 21 It means Figure 18 Top view of sheath 4.
[0068] Especially as Figures 18 to 21 As shown, the sheath body 4 has: a back plate portion 40, side plate portions 41 rising from both sides of the back plate portion 40, and sheath latching claws 42 protruding from the top ends of each side plate portion 41 in a direction toward each other. The sheath body 4 of this embodiment has a plurality of sheath latching claws 42 that are separately arranged in the longitudinal direction D1. The side plate portions 41 are separately arranged in the width direction D2.
[0069] Especially as Figure 20 As shown, the thickness t of the back plate portion 40 and the side plate portion 41 can be 1.2 to 1.5 mm, and the angle θ between the inner surface of the back plate portion 40 and the inner surface of the side plate portion 41 can be 80 to 90 degrees.
[0070] A sheath latch claw 42, protruding from the top end of one side plate portion 41, protrudes toward the other side plate portion 41 in the width direction D2, and a sheath latch claw 42, protruding from the top end of the other side plate portion 41, protrudes toward one side plate portion 41 in the width direction D2. Specifically, as... Figure 18 As shown in the illustrated scheme, the sheath clip 42 protruding from the top end of one side plate portion 41 and the sheath clip 42 protruding from the top end of the other side plate portion 41 are positioned at the same location in the longitudinal direction D1. However, these sheath clips 42 may also be offset in the longitudinal direction D1.
[0071] In the illustrated embodiment, the sheath latch 42 protrudes from the top of the side plate portion 41. However, the sheath latch 42 may also protrude from a position where it descends from the top of the side plate portion 41 toward the back plate portion 40. For example, the area from the top of the side plate portion 41 to 1 / 3, more specifically 1 / 4, or even more specifically 1 / 5 of the overall height of the side plate portion 41 along the thickness direction D3 can be understood as the top portion.
[0072] Especially asFigure 19 As shown, a plurality of through holes 43 configured below the sheath engaging claws 42 can be provided in the back plate portion 40.
[0073] Here, in particular as Figure 13 As shown, in a state where the ring binder has been assembled, the sheath engaging claws 42 are inserted into the engaging groove portions 70 of the first seat plate 1 and the second seat plate 2. Thereby, the first seat plate 1 and the second seat plate 2 are pressed against each other and held. It is preferable that the protruding amount PA (refer to Figure 19 ) of the sheath engaging claws 42 from the side plate portion 41 be 1 / 3 or more of the depth De (refer to Figure 11 ) of the engaging groove portions 70. As shown in Figure 19 , the protruding amount PA of the sheath engaging claws 42 can be the distance in the width direction D2 between the tip end of the sheath engaging claws 42 and the root position of the sheath engaging claws 42 in the inner surface of the side plate portion 41. As shown in Figure 11 , the engaging groove portions 70 have a first wall portion 701 and a second wall portion 702 extending from the bottom surface 700. The second wall portion 702 is located on the back surface side of the first seat plate 1 and the second seat plate 2 compared to the first wall portion 701. The depth De of the engaging groove portions 70 can be the distance in the width direction D2 from the bottom surface 700 to the tip end of the second wall portion 702. Depending on the embodiment, there are also cases where the first wall portion 701 is omitted. In this case, the engaging groove portions 70 are formed by the surface of the second wall portion 702 on the surface side and the bottom surface 700. Furthermore, in the illustrated embodiment, the bottom surface 700 of the engaging groove portions 70 is provided as a circular arc surface, but there are also cases where the bottom surface 700 is composed of a flat surface when the first wall portion 701 is omitted. By making the protruding amount PA of the sheath engaging claws 42 1 / 3 or more of the depth De of the engaging groove portions 70, it is possible to more reliably suppress separation of the first seat plate 1 and the second seat plate 2 from the sheath body 4. On the other hand, it becomes difficult for the engaging of the sheath engaging claws 42 to the engaging groove portions 70 based on pressing the sheath body 4 to the first seat plate 1 and the second seat plate 2 from below.
[0074] In particular as Figure 21 shown, sheath end engaging claws 421 configured on both end portions of the sheath body 4 in the long dimension direction D1 are provided in the sheath engaging claws 42. The region from both ends of the sheath body 4 to 1 / 3, more specifically 1 / 4, further specifically 1 / 5 of the full length of the sheath body 4 in the long dimension direction D1 can be understood as the both end portions. As with the sheath body 4 of the present embodiment, when a plurality of sheath engaging claws 42 are provided separated from each other in the long dimension direction D1, the sheath end engaging claws 421 can be the sheath engaging claws 42 closest to one end of the sheath body 4 and the sheath engaging claws 42 closest to the other end of the sheath body 4 in each of the side plate portions 41.
[0075] The sheath end portion engaging claws 421 each have a sheath inclined side 421a disposed on the outer side (the side opposite the center side) in the long dimension direction D1 of the sheath body 4 and extending obliquely with respect to the width direction D2, and a sheath positioning side 421b disposed on the inner side (the center side) in the long dimension direction D1 of the sheath body 4 and extending along the width direction D2. In the sheath end portion engaging claws 421 provided at one end portion and the sheath end portion engaging claws 421 provided at the other end portion, the positions of the sheath inclined sides 421a and the positions of the sheath positioning sides 421b are reversed.
[0076] Further, at least one sheath intermediate engaging claw 422 is provided between the sheath end portion engaging claws 421 disposed in the long dimension direction D1 in the sheath engaging claws 42. In the illustrated example, seven sheath intermediate engaging claws 422 are provided in each of the side plate portions 41. The sides of the sheath intermediate engaging claws 422 extend obliquely with respect to the width direction D2. That is, the sheath intermediate engaging claws 422 are provided with an inclined surface corresponding to the sheath inclined side 421a of the sheath end portion engaging claws 421, but are not provided with a surface extending along the width direction D2 corresponding to the sheath positioning side 421b.
[0077] Next, the functions or effects of the seat plate end portion engaging claws 71 of the first and second seat plates 1 and 2, and the sheath end portion engaging claws 421 and the sheath intermediate engaging claws 422 of the sheath body 4 will be described with reference to Figures 22 to 25
[0078] Figure 22 is a view showing the state when the sheath body 4 of the ring binder is inserted into the first and second seat plates 1 and 2 from one end thereof, Figure 1 is a view showing the relationship between the seat plate end portion engaging claws 71 and the sheath end portion engaging claws 421 in the region XXIII of the ring binder, Figure 23 is a view showing the relationship between the seat plate end portion engaging claws 71 and the sheath intermediate engaging claws 422 in the region XXV of the ring binder. Figure 22
[0079] Figure 24 is a view showing the state when the sheath body 4 of the ring binder is inserted into the first and second seat plates 1 and 2 from the other end thereof, Figure 1 is a view showing the relationship between the seat plate end portion engaging claws 71 and the sheath intermediate engaging claws 422 in the region XXV of the ring binder. Figure 25 Figure 22 As shown in and
[0080] As shown in Figure 22 and Figure 24 , the ring binder of the present embodiment is adapted to insert the sheath engaging claws 42 of the sheath body 4 into the engaging groove portions 70 of the first and second seat plates 1 and 2 by relative displacement of the first and second seat plates 1 and 2 and the sheath body 4 in the long dimension direction D1.
[0081] When this relative displacement occurs, the seat plate inclined side 71a of the seat plate end locking claw 71 and the sheath inclined side 421a of the sheath end locking claw 421 are configured to allow the seat plate end locking claw 71 to pass over the sheath locking claw 42 and the sheath end locking claw 421. Furthermore, the seat plate positioning side 71b of the seat plate end locking claw 71 and the sheath positioning side 421b of the sheath end locking claw 421 are configured to restrict the relative displacement of the first seat plate 1 and the second seat plate 2 with respect to the sheath body 4 in the longitudinal direction D1 by abutting against each other. That is, when the seat plate positioning side 71b abuts against the sheath positioning side 421b, the relative displacement in the longitudinal direction D1 is restricted, while at other times (when the seat plate inclined side 71a abuts against the sheath inclined side 421a, when the seat plate inclined side 71a abuts against the sheath positioning side 421b, and when the seat plate positioning side 71b abuts against the sheath inclined side 421a), the relative displacement in the longitudinal direction D1 is permitted.
[0082] In such Figure 22 As shown in the figure, when the first seat plate 1 and the second seat plate 2 are inserted from one end of the sheath body 4 on the left side of the figure to the right side of the figure, they are located at... Figure 22 The locking claw 71 at the end of the seat plate on the left side of the figure can extend over the locking claw 421 at the end of the sheath on the right side of the figure (see reference). Figure 23 After the locking claw 71 at the end of the seat plate passes over the locking claw 421 at the end of the sheath, when the first seat plate 1 and the second seat plate 2 are displaced in the opposite direction (left side in the figure), the seat plate positioning side 71b of the locking claw 71 at the end of the seat plate abuts against the sheath positioning side 421b of the locking claw 421 at the end of the sheath, and the displacement of the first seat plate 1 and the second seat plate 2 to the left side in the figure is restricted. Thus, even if the sheath 4 is locked to the first seat plate 1 and the second seat plate 2 by relative displacement in the longitudinal direction D1, the offset of the first seat plate 1, the second seat plate 2, and the sheath 4 in the longitudinal direction D1 can be suppressed.
[0083] The sides of the sheath intermediate locking claw 422 are configured to extend obliquely relative to the width direction D2, allowing the seat plate end locking claw 71 to extend beyond the sheath intermediate locking claw 722. For example, in... Figure 24 As shown in the figure, when the first seat plate 1 and the second seat plate 2 are inserted from the other end of the sheath body 4 on the right side of the figure toward the left side of the figure, they are located at... Figure 24 In the diagram, the positioning side 71b of the seat plate end locking claw 71 on the left side of the seat plate first abuts against the middle locking claw 422 of the sheath, but can move towards the left side of the diagram past the middle locking claw 422 of the sheath (see reference). Figure 25 By setting the corner 71c of the seat plate end locking claw 71 that abuts against the seat plate positioning side 71b as an arc surface or R-angle as described above, the seat plate end locking claw 71 can more smoothly pass over the sheath middle locking claw 422.
[0084] The above-described preferred embodiments of the present application have been described in detail with reference to the accompanying drawings, but the present application is not limited to the examples. Various modifications and changes are apparent to those skilled in the art with the technical concept recited in the claims, and it is naturally understood that such modifications and changes belong to the technical scope of the present application.
[0085] The invention described in this specification can be described as follows.
[0086] [1] A ring binding device comprising: two seat plates of a long size shape extending adjacent to and parallel to each other; a plurality of half ring portions provided on a surface side of the two seat plates; and a sheath body disposed on a back side of the two seat plates and sandwiching the two seat plates from an outer side in a width direction, pressing and holding the two seat plates against each other, and the sheath body being of a long size shape and composed of a material including a resin material,
[0087] With rotation displacement of the two seat plates under the pressing force of the sheath body, the top ends of the half ring portions approach and separate from each other,
[0088] A fitting groove portion extending in a long size direction is provided on an outer side of each of the two seat plates,
[0089] A seat plate end portion locking claw disposed on both end portions of the two seat plates in the long size direction is provided inside the fitting groove portion,
[0090] The seat plate end portion locking claws each have: a seat plate inclined side surface disposed on an inner side in the long size direction of the seat plate and extending obliquely with respect to the width direction; and a seat plate positioning side surface disposed on an outer side in the long size direction of the seat plate and extending in the width direction,
[0091] The sheath body has: a back plate portion; a side plate portion rising from both side edges of the back plate portion; and sheath fitting claws protruding from top end portions of the side plate portions toward each other and inserted into the fitting groove portions,
[0092] A sheath end portion fitting claw disposed on both end portions of the sheath body in the long size direction is provided on the sheath fitting claws,
[0093] The sheath end portion fitting claws each have: a sheath inclined side surface disposed on an outer side in the long size direction of the sheath body and extending obliquely with respect to the width direction; and a sheath positioning side surface disposed on an inner side in the long size direction of the sheath body and extending in the width direction,
[0094] The seat plate inclined side and the sheath inclined side are configured to allow the seat plate end portion locking claw to pass over the sheath engaging claw and the sheath end portion engaging claw.
[0095] The seat plate positioning side and the sheath positioning side are configured to restrict relative displacement of the two seat plates and the sheath body in the long dimension direction by abutting against each other.
[0096] [2] The ring binder according to [1], wherein
[0097] The sheath engaging claw is provided with at least one sheath intermediate engaging claw disposed between the sheath end portion engaging claws in the long dimension direction.
[0098] The side surfaces on both sides of the sheath intermediate engaging claw are configured to extend obliquely with respect to the width direction, allowing the seat plate end portion locking claw to pass over the sheath intermediate engaging claw.
[0099] [3] The ring binder according to [1] or [2], wherein
[0100] The protruding amount of the sheath engaging claw from the side plate portion is 1 / 3 or more of the depth of the engaging groove portion.
[0101] [4] The ring binder according to any one of [1] to [3], wherein
[0102] Both ends of the engaging groove portion in the long dimension direction are open.
[0103] [5] The ring binder according to any one of [1] to [4], wherein
[0104] A protruded convex surface and a protruded concave surface that fit into each other are provided on the inner side surface of each of the two seat plates, and opposing protrusion portions are formed in the protruded convex surface and the protruded concave surface, respectively, the opposing protrusion portions collide with each other halfway through the rotational displacement, overcoming the pressing force and passing over to resist the rotational displacement.
[0105] [6] The ring binder according to any one of [1] to [5], wherein
[0106] The material containing the resin material is a biomass plastic.
[0107] [7] The ring binder according to [6], wherein
[0108] The material containing the resin material contains a material derived from paper, corn, eggshells, or shells.
[0109] Explanation of Reference Numerals
[0110] 1, 2: seat plate
[0111] 3: semi-ring portion;
[0112] 4: sheath body;
[0113] 40: back plate portion;
[0114] 41: side plate portion;
[0115] 42: sheath engaging claw;
[0116] 421: sheath end engaging claw;
[0117] 421a: sheath inclined side surface;
[0118] 421b: sheath positioning side surface;
[0119] 422: sheath intermediate engaging claw;
[0120] 6: inner side surface;
[0121] 60: protrusion-equipped convex surface;
[0122] 60a: opposing protrusion portion;
[0123] 61: protrusion-equipped concave surface;
[0124] 61a: opposing protrusion portion;
[0125] 7: outer side surface;
[0126] 70: engaging groove portion;
[0127] 71: seat plate end engaging claw;
[0128] 71a: seat plate inclined side surface;
[0129] 71b: seat plate positioning side surface.
Claims
1. A ring binder comprising: two long-length seat plates extending adjacent to and parallel to each other; and a sheath arranged on the back side of the two seat plates and sandwiching the two seat plates from the outside in the width direction, pressing the two seat plates against each other and holding them, the sheath being long-length and composed of a material including a resin material, the top ends of the half-ring portions approaching and separating from each other with rotational displacement of the two seat plates under the pressing force of the sheath, wherein a clamping groove portion extending in the long-length direction is provided on the outside of each of the two seat plates, a seat end clamping claw arranged on both ends of the two seat plates in the long-length direction of the seat plates is provided inside the clamping groove portion, the seat end clamping claw has a seat inclined side surface arranged on the inside in the long-length direction of the seat plate and extending obliquely with respect to the width direction, and a seat positioning side surface arranged on the outside in the long-length direction of the seat plate and extending in the width direction, the sheath has a back plate portion, a side plate portion rising from both side edges of the back plate portion, and a sheath clamping claw protruding from the top end of each of the side plate portions toward each other and inserted into the clamping groove portion, the sheath clamping claw presses the two seat plates against each other by being inserted into the clamping groove portion of the two seat plates, a sheath end clamping claw arranged on both ends of the sheath in the long-length direction of the sheath is provided on the sheath clamping claw, the sheath end clamping claw has a sheath inclined side surface arranged on the outside in the long-length direction of the sheath and extending obliquely with respect to the width direction, and a sheath positioning side surface arranged on the inside in the long-length direction of the sheath and extending in the width direction, the seat inclined side surface and the sheath inclined side surface are configured to allow the seat end clamping claw to pass over the sheath clamping claw and the sheath end clamping claw, the seat positioning side surface and the sheath positioning side surface are configured to restrict relative displacement of the two seat plates and the sheath in the long-length direction of the sheath by abutting against each other, and at least one sheath intermediate clamping claw arranged between the sheath end clamping claws in the long-length direction is provided on the sheath clamping claw, the side surfaces on both sides of the sheath intermediate clamping claw are configured to extend obliquely with respect to the width direction and allow the seat end clamping claw to pass over the sheath intermediate clamping claw.
2. The ring binder according to claim 1, wherein the protruding amount of the sheath clamping claw from the side plate portion is 1 / 3 or more of the depth of the clamping groove portion. a plurality of semi-ring portions provided on the surface side of the two seat plates; 3. The ring binder according to claim 1 or 2, wherein both end openings of the clamping groove portion in the long-length direction.
4. The ring binder according to claim 1 or 2, wherein a protruded convex surface and a protruded concave surface fitting into each other are provided on the inside of each of the two seat plates, and opposing protrusion portions are respectively formed on the protruded convex surface and the protruded concave surface, the opposing protrusion portions collide with each other in the middle of the rotational displacement, overcome the pressing force, and resist the rotational displacement by passing over. 5. The ring binder according to claim 1 or 2, wherein The material containing the resin material is a biomass plastic.
6. The ring binder according to claim 5, wherein The material containing the resin material contains a material derived from paper, corn, eggshells, or shells.
Citation Information
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