Ring type binding appliance
By using the design of rotary displacement and inclined side in the ring binding device, the problem of the resin material being prone to cracking and insufficient push pressure under the push pressure is solved, and effective suppression and stable binding of the seat plate and sheath body are achieved.
Patent Information
- Application Number
- CN202480002363.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2023-10-18
- Filing Date
- 2024-05-01
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2044-05-01
AI Technical Summary
The existing ring binding instruments are prone to cracks in the resin material when applying push pressure, and the push pressure is insufficient, making it difficult to effectively suppress the separation and deviation of the seat plate and the sheath body.
A ring binding device is designed, which contains two long-sized seat plates and sheath body. The sheath body is composed of resin material. The seat plate is rotated and displaced under the action of the pushing pressure of the sheath body, and the top end of the half-ring part is close to It is also separated, and an inclined side surface and positioned side surface are provided in the jagging groove portion of the seat plate and the sheath body, and the relative displacement in the long-dimensional direction is restricted by these side surfaces.
It effectively suppresses the deviation of the seat plate and the sheath in the long-size direction, increases the pushing pressure, prevents the separation of the sheath and the sheath plate, and enhances the stability of binding.
Smart Images
Figure CN119156291A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a ring binder in which the top ends of the half ring parts approach and separate from each other as two base plates are rotated and displaced under the pressing force of a sheath body. Background Art
[0002] As such a ring binding device used in the past, for example, there can be cited the structure shown in the following patent document 1. That is, in the previous ring binding device, two base plates (half plates) and a sheath body are formed of resin (hard plastic). A snap-fit groove is provided on the side of the two base plates, and an inclined surface for snapping with the snap-fit groove is provided on the sheath body. The sheath body is arranged below the two base plates, and the sheath body is pressed against the two base plates from below, thereby snapping the inclined surface with the snap-fit groove, and assembling the two base plates to the sheath body.
[0003] Prior art literature
[0004] Patent Literature
[0005] Patent Document 1: Japanese Patent Application Laid-Open No. 2001-239781 Summary of the invention
[0006] Problems to be solved by the invention
[0007] In the above-mentioned conventional structure, since the sheath body is pressed against the two seat plates from below to engage the inclined surface with the engaging groove, it is difficult to lengthen the inclined surface in order to suppress the sheath body or the inclined surface from cracking, thereby making it easy for the two seat plates and the sheath body to separate up and down.
[0008] In addition, the resin sheath tends to have a weaker pushing force than the metal sheath. Although the pushing force can be increased by lengthening the inclined surface of the sheath in the conventional structure, it is still difficult to lengthen the sheath in the structure where the sheath is assembled on two seat plates from below.
[0009] As another assembly method, it is conceivable to clamp the inclined surface of the sheath body to the clamping groove of the two seat plates by relative displacement of the two seat plates and the sheath body in the long dimension direction. If this assembly method is adopted, the inclined surface can be lengthened, which can suppress the upper and lower separation of the two seat plates and the sheath body, and ensure the pushing force. However, in this case, it is necessary to enable the two seat plates and the sheath body to be relatively displaced in the long dimension direction so that the two seat plates and the sheath body can be easily offset in the long dimension direction.
[0010] The present invention has been made to solve the above-mentioned problems, and one object thereof is to provide a ring binder that can suppress the displacement of the two base plates and the sheath in the longitudinal direction even when the sheath is engaged with the two base plates by relative displacement in the longitudinal direction.
[0011] Solutions for solving problems
[0012] The ring binding device of the present invention is constructed as follows in one embodiment, that is, a ring binding device, which comprises: two long seat plates, adjacent to each other and extending in parallel; a plurality of semi-ring parts are arranged on the surface sides of the two seat plates; and a sheath body, which is arranged on the back side of the two seat plates and clamps the two seat plates from the outside in the width direction to push and hold the two seat plates against each other, and the sheath body is long and made of a material containing resin material, and with the rotational displacement of the two seat plates under the pushing force of the sheath body, the top ends of the respective semi-ring parts approach and separate from each other, wherein a clamping groove part extending in the long dimension direction is provided on the outer side surface of each of the two seat plates, and seat plate end locking claws arranged at the two ends of the two seat plates in the long dimension direction are provided inside the clamping groove part, and the seat plate end locking claws respectively have: a seat plate inclined side surface, which is arranged on the inner side of the seat plate in the long dimension direction and is opposite to The cam is configured to move the locking pawl at the bottom of the side panel and the locking pawl at the bottom of the side panel, wherein the locking pawl is configured to move the locking pawl at the bottom of the side panel and the locking pawl at the bottom of the side panel.
[0013] Effects of the Invention
[0014] According to one embodiment of the ring binding device of the present invention, the seat plate positioning side surface and the sheath positioning side surface are configured to limit the relative displacement of the two seat plates and the sheath body in the long dimension direction by abutting against each other. Therefore, even in the case where the sheath body is clamped to the two seat plates by relative displacement in the long dimension direction, the deviation of the two seat plates and the sheath body in the long dimension direction can be suppressed. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a front view showing the ring binder according to the embodiment of the present invention.
[0016] Figure 2 Yes means Figure 1 A top view of a ring binding apparatus.
[0017] Figure 3Yes means Figure 1 A bottom view of a ring binding apparatus.
[0018] Figure 4 Yes means Figure 1 Left side view of the ring binder.
[0019] Figure 5 Yes means Figure 1 Right side view of the ring binder.
[0020] Figure 6 Observed from above Figure 1 A three-dimensional diagram of the ring binding device.
[0021] Figure 7 Yes Figure 6 A three-dimensional view of a ring binder when viewed from inside out.
[0022] Figure 8 It is expressed as a monomer Figure 1 Front view of the first seat plate.
[0023] Fig. 9 Yes means Figure 8 A top view of the first seat plate.
[0024] Fig.10 Yes means Figure 8 Bottom view of the first seat plate.
[0025] Fig.11 It is along Figure 8 A cross-sectional view of the first seat plate taken along line XI-XI.
[0026] Fig.12 It is along Figure 8 A cross-sectional view of the first seat plate along line XII-XII.
[0027] Fig.13 In the closed state Fig.11 A cross-sectional view showing a state in which the convex surface with protrusions of the second seat plate is fitted into the concave surface with protrusions of the second seat plate.
[0028] Fig.14 Indicates that it is in the open state Fig.11 The convex surface with protrusions fits into Fig.12 A cross-sectional view of a concave state with a protrusion.
[0029] Fig.15 It is along Figure 1 A cross-sectional view of the ring binding device along line XVa-XVa.
[0030] Fig.16 Yes means Figure 1 Rear view of the first seat plate.
[0031] Fig.17 It is along Fig.16 A cross-sectional view of the first seat plate taken along line XVII-XVII.
[0032] Fig.18 It is expressed as a monomer Figure 1 A stereoscopic view of the sheath.
[0033] Fig.19 yes Fig.18 Cross-sectional view of the sheath in plane XIX.
[0034] Fig. 20 yes Fig.18 A cross-sectional view of the sheath body in plane XX.
[0035] Fig.21 Yes means Fig.18 Top view of the sheath.
[0036] Fig. 22 It means from Figure 1 An explanatory diagram of a state where one end of a sheath body is inserted into a first seat plate and a second seat plate.
[0037] Fig.23 Yes means Fig. 22 An explanatory diagram of the relationship between the seat plate end locking claw and the sheath end engaging claw in region XXIII.
[0038] Fig.24 It means from Figure 1 An explanatory diagram of a situation in which the other end of the sheath body is inserted into the first seat plate and the second seat plate.
[0039] Fig.25 Yes means Fig. 22 An explanatory diagram of the relationship between the seat plate end locking claw and the sheath middle locking claw in the area XXV. DETAILED DESCRIPTION
[0040] The following is an explanation of the method for implementing the present invention with reference to the accompanying drawings. The present invention is not limited to the various embodiments, and its constituent elements can be deformed and concretized within the scope of its main purpose. In addition, various inventions can be formed by appropriately combining multiple constituent elements disclosed in each embodiment. For example, several constituent elements can also be deleted from the overall constituent elements shown in the embodiment. Furthermore, constituent elements of different embodiments can also be appropriately combined.
[0041] Figure 1 1 is a front view showing a ring binder according to an embodiment of the present invention, Figure 2 Yes means Figure 1 A top view of a ring binder. Figure 3 Yes means Figure 1A bottom view of a ring binding apparatus, Figure 4 Yes means Figure 1 Left side view of the ring binder, Figure 5 Yes means Figure 1 In addition, Figure 6 Observed from above Figure 1 A three-dimensional diagram of a ring binding apparatus. Figure 7 Yes Figure 6 It should be noted that the rear view of the ring binder is symmetrically represented with the front view.
[0042] Figure 1 to Figure 7 The ring binding device shown is a device for binding a plurality of sheets of paper having a plurality of holes, such as loose-leaf paper. Figure 1 to Figure 7 As shown, the ring binding device comprises: two base plates 1, 2; a plurality of half ring portions 3; and a sheath body 4.
[0043] The two seat plates 1 and 2 are adjacent to each other and extend in parallel. The direction in which the two seat plates 1 and 2 extend is sometimes referred to as a longitudinal direction D1. The two seat plates 1 and 2 are sometimes referred to as a first seat plate 1 and a second seat plate 2.
[0044] A plurality of semi-ring portions 3 are integrally provided with the first seat plate 1 and the second seat plate 2, respectively, and extend toward the surface side of the first seat plate 1 and the second seat plate 2. A plurality of semi-ring portions 3 are separately arranged in each of the first seat plate 1 and the second seat plate 2 in the long dimension direction D1. The semi-ring portions 3 provided on the first seat plate 1 are arranged in a manner opposite to the semi-ring portions 3 provided on the second seat plate 2. The number of semi-ring portions 3 provided on each of the first seat plate 1 and the second seat plate 2 is the same. The number of semi-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 binding device of the present embodiment, six semi-ring portions 3 are respectively provided in 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 semi-ring groups consisting of three semi-ring portions 3 are separately arranged in the long dimension direction D1.
[0045] The sheath 4 is elongated and made of a material including a resin material, and is disposed 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 pushes and holds the first seat plate 1 and the second seat plate 2 against each other. The width direction D2 may be a direction orthogonal to the elongated direction D1.
[0046] As the material of the resin material constituting the sheath body 4, various materials can be used. As the material of the resin material, a resin derived from petroleum such as polycarbonate can be used, but a biomass plastic can also be used. Biomass plastic refers to a resin derived from paper or plants that is not derived from petroleum. The material containing the resin material can also include a material derived from paper, corn, eggshells or shells. It should be noted 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 material different from the sheath body 4 can be used. As a material different from the sheath body 4, metals such as iron-based materials can be listed.
[0047] The ring binder of the present embodiment is configured such that the top ends of the half ring parts 3 approach and separate from each other as the first base plate 1 and the second base plate 2 rotate under the pressing force of the sheath body 4. The state in which the top ends of the half ring parts 3 approach each other is sometimes referred to as a closed state, and the state in which the top ends of the half ring parts 3 separate from each other is sometimes referred to as an open state. Figure 1 to Figure 7 Represents a ring binder in the open position.
[0048] The first seat plate 1 and the second seat plate 2 may be provided with knobs 5 at both ends thereof for the user to operate when the first seat plate 1 and the second seat plate 2 are rotated and displaced. Figure 4 and Figure 5 As shown, in the open state, the first seat plate 1 and the second seat plate 2 are rotated so that the top ends 5a of the knobs 5 approach each other. The first seat plate 1 and the second seat plate 2 can be rotated to separate the top ends 5a of the knobs 5 from each other to set the closed state.
[0049] Next, refer to Figure 8 to Figure 17 The seat plates 1 and 2 will be described below.
[0050] Figure 8 It is expressed as a monomer Figure 1 A front view of the first seat plate 1, Fig. 9 Yes means Figure 8 A top view of the first seat plate 1, Fig.10 Yes means Figure 8 A bottom view of the first seat plate 1.
[0051] Fig.11 It is along Figure 8 A cross-sectional view of the first seat plate 1 taken along line XI-XI, Fig.12 It is along Figure 8 A cross-sectional view of the first seat plate 1 along the line XII-XII, Fig.13 Indicates the closed state Fig.11 A cross-sectional view showing a state in which the convex surface 60 with protrusions is fitted into the concave surface 61 with protrusions of the second seat plate 2, Fig.14 Indicates that it is in the open state Fig.11 The convex surface 60 with a protrusion is fitted into Fig.12 A cross-sectional view of the state of the concave surface 61 with protrusions.
[0052] Fig.15 It is along Figure 1 A cross-sectional view of a ring binding device along line XVa-XVa. It should be noted that: Fig.15 express Figure 8 A cross section of the first seat panel 1 and the second seat panel 2 at the position of the line XVb-XVb.
[0053] Fig.16 Yes means Figure 1 A rear view of the first seat plate 1, Fig.17 It is along Fig.16 A cross-sectional view of the first seat plate 1 taken along line XVII-XVII.
[0054] The two seat plates 1 and 2, namely the first seat plate 1 and the second seat plate 2, may have different shapes from each other, but they have the same shape in the ring binder of this embodiment. Figure 8 to Figure 10 The first seat plate 1 is shown in FIG. 1 , but the second seat plate 2 has the same structure as the first seat plate 1. The first seat plate 1 and the second seat plate 2 may have a line-symmetrical shape at their centers in the long dimension direction D1. Figures 1 to 7 In the assembled state of the ring binder shown, the first seat plate 1 and the second seat plate 2 may be arranged to be reversed in the longitudinal direction D1 and to face each other.
[0055] The inner side surfaces 6 of the first seat plate 1 and the second seat plate 2 are provided with a convex surface 60 with a protrusion and a concave surface 61 with a protrusion that fit into each other. Figure 1 to Figure 7 In the assembled state of the ring binder shown in the figure, the surfaces located on the inner side and facing each other in the width direction D2. The convex surface 60 with protrusions and the concave surface 61 with protrusions can be arranged at line-symmetrical positions at the center in the longitudinal direction D1. In particular, Fig.11 and Fig.12As shown, the convex surface 60 with protrusions and the concave surface 61 with protrusions are respectively formed with opposing protrusions 60a and 61a, and the opposing protrusions 60a and 61a collide with each other in the middle of the rotational displacement of the first seat plate 1 and the second seat plate 2, overcome the pushing force of the sheath body 4 and cross over to resist the rotational displacement. When the first seat plate 1 and the second seat plate 2 are to be rotated, the opposing protrusions 60a and 61a resist the rotational displacement, so that the semi-ring part 3 that is in contact with each other and closed is not easy to open. As a result, even a large number of sheets of paper can be effectively bound. More specifically, when the opposing protrusions 60a and 61a cross over each other, the distance from the fulcrum is extended compared to the case where there are no opposing protrusions 60a and 61a, and the reaction force (pushing force) can be increased. This is particularly useful when using a sheath body 4 made of resin or the like with weak elasticity.
[0056] like Fig.13 As shown, in the closed state, the opposing protrusions 60a and 61a are arranged offset from each other in the thickness direction D3 of the first seat plate 1 and the second seat plate 2. If the first seat plate 1 and the second seat plate 2 are rotated and displaced from this state, as shown in FIG. Fig.14 As shown, the opposing protrusions 60a and 61a ride on each other and pass over each other. As a result, the first seat plate 1 and the second seat plate 2 slightly move in the direction of separation from each other, the sheath body 4 is widened, and with the increase in its elastic deformation, a large pushing force acts on the first seat plate 1 and the second seat plate 2. At this time, resistance to rotational displacement is generated. As a result, unintentional opening of the semi-ring portion 3 is suppressed. In addition, even when changing from an open state to a closed state, resistance caused by the riding of the opposing protrusions 60a and 61a is generated for the rotational displacement at this time.
[0057] The opposing protrusions 60a and 61a may be provided protruding from a portion of the first seat plate 1 and the second seat plate 2 on the protruding convex surface 60 and the protruding concave surface 61 in the thickness direction D3. The positions where the opposing protrusions 60a and 61a are provided on the protruding convex surface 60 and the protruding concave surface 61 in the thickness direction D3 of the first seat plate 1 and the second seat plate 2 are preferably determined in consideration of the opening and closing positions of the semi-ring portion 3 to which the opposing protrusions 60a and 61a provide resistance.
[0058] The convex surface 60 with protrusions and the concave surface 61 with protrusions include opposing protrusions 60a, 61a, and as shown in the example shown in the figure, it is more appropriate to form a curved surface. In addition, it is preferred that Figure 11 to Figure 14 As shown, in the thickness direction D3 of the first seat plate 1 and the second seat plate 2, the surfaces on both sides of the opposing protrusions 60a, 61a on the convex surface 60 with protrusions and the concave surface 61 with protrusions are slightly recessed to form a concave shape so that the opposing protrusions 60a, 61a pass over the opposing protrusions 60a, 61a opposite to them and then sink into them.
[0059] The paired opposing protrusions 60a, 61a provided on each of the first seat plate 1 and the second seat plate 2 can be provided in a pair in the long dimension direction D1 of the first seat plate 1 and the second seat plate 2, but in order to provide greater resistance to rotational displacement, it is preferred to provide multiple pairs. In addition, in conjunction with this arrangement, the paired convex surface 60 with protrusions and the concave surface 61 with protrusions can also be provided in a pair or multiple 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 shown in FIG. Figure 8 As shown, three convex surfaces 60 with protrusions are provided in the area from the center position of the first seat plate 1 and the second seat plate 2 in the long dimension direction D1 to one end, and three concave surfaces 61 with protrusions are provided in the area from the center position of the first seat plate 1 and the second seat plate 2 in the long dimension direction D1 to the other end.
[0060] Furthermore, on each inner side surface 6 of the first seat plate 1 and the second seat plate 2, a fulcrum protrusion 62 can be provided as a rotation fulcrum for the rotation displacement. Fig.15 It can be seen that the plurality of claw-shaped supporting point protrusions 62 protruding from the inner side surface 6 and having a gradually decreasing thickness are separated in the longitudinal direction D1 and are respectively provided on the first seat plate 1 and the second seat plate 2. Fig.15 As shown, the fulcrum protrusion 62 of the first seat plate 1 sinks into the lower side of the second seat plate 2. On the contrary, the fulcrum protrusion 62 of the first seat plate 1 sinks into the lower side of the second seat plate 2. When the half ring part 3 is opened and closed, the contact part between the fulcrum protrusion 62 of the first seat plate 1 and the second seat plate 2 and the lower surface of the second seat plate 2 and the first seat plate 1 becomes a rotation fulcrum, resulting in the rotation displacement of the first seat plate 1 and the second seat plate 2.
[0061] Preferably, if Figure 8 As shown, the fulcrum protrusion 62 is provided at a position adjacent to the protruding convex surface 60 and the protruding concave surface 61 in the long dimension direction D1 of the first seat plate 1 and the second seat plate 2. This is because when the first seat plate 1 and the second seat plate 2 are rotated around the rotation fulcrum of the fulcrum protrusion 62, the opposing protrusions 60a and 61a adjacent to the rotation fulcrum can effectively provide resistance, and the rotation displacement action is further stabilized.
[0062] Especially if Fig.16 As shown, the first seat plate 1 and the second seat plate 2 (the two seat plates 1 and 2) are provided with a snap-fit groove 70 extending along the longitudinal direction D1 on their respective outer side surfaces 7. Figure 1 to Figure 7In the state where the ring binder is assembled, the surface is located on the outside in the width direction D2. The engaging groove 70 can be formed to be recessed from the outer side surface 7 to the inside in the width direction D2. In the illustrated embodiment, both ends of the engaging groove 70 in the longitudinal direction D1 are open. However, the end of one side of the engaging groove 70 in the longitudinal direction D1 can also be closed.
[0063] Especially if Fig.16 and Fig.17 As shown, inside the engaging groove 70, seat plate end locking claws 71 are provided at both end portions of the first seat plate 1 and the second seat plate 2 in the long dimension direction D1. In other words, in each of the first seat plate 1 and the second seat plate 2, seat plate end locking claws 71 are provided at one end and the other end portion in the long dimension direction D1. The positions where the seat plate end locking claws 71 are provided may be the positions of the precise two ends in the long dimension direction D1 of the first seat plate 1 and the second seat plate 2, or may be the positions entering from the two ends to the inner side (center side) in the long dimension direction D1. For example, the regions from the two ends in the long dimension direction D1 of the first seat plate 1 and the second seat plate 2 to 1 / 3, more specifically 1 / 4, and further specifically 1 / 5 of the total length in the long dimension direction D1 of the first seat plate 1 and the second seat plate 2 may be understood as the two end portions.
[0064] In this embodiment, the distance Dis1 in the longitudinal direction D1 from one end of the first seat plate 1 and the second seat plate 2 to the seat plate end locking claw 71 provided at one end is equal to the distance Dis2 in the longitudinal direction D1 from the other end to the seat plate end locking claw 71 provided at the other end. Figure 1 to Figure 7 In the state where the ring binder is assembled, the locking claw 71 of the seat plate end of the first seat plate 1 and the locking claw 71 of the seat plate end of the second seat plate 2 are arranged at the same position in the longitudinal direction D1 (see the following Fig.23 However, the distance Dis1 and the distance Dis2 may be different, and the seat plate end locking claw 71 of the first seat plate 1 and the seat plate end locking claw 71 of the second seat plate 2 may be arranged at positions offset in the longitudinal direction D1.
[0065] Especially if Fig.17 As shown, the seat plate end locking claws 71 each have: a seat plate inclined side surface 71a, which is arranged on the inner side (central side) of the long dimension direction D1 of the first seat plate 1 and the second seat plate 2 and extends obliquely with respect to the width direction D2; and a seat plate positioning side surface 71b, which is arranged on the outer side (the side opposite to the central side) of the long dimension direction D1 of the first seat plate 1 and the second seat plate 2 and extends along the width direction D2. In the seat plate end locking claw 71 provided at one end and the seat plate end locking claw 71 provided at the other end, the position of the seat plate inclined side surface 71a is reversed to the position of the seat plate positioning side surface 71b.
[0066] The corner 71c where the locking claw 71 at the end of the seat plate abuts against the seat plate positioning side surface 71b can be an acute angle, or an arc surface or an R angle.
[0067] Next, refer to Figure 18 to Figure 21 The sheath body 4 will be described below. Fig.18 It is expressed as a monomer Figure 1 A stereogram of the sheath 4, Fig.19 yes Fig.18 A cross-sectional view of the sheath body 4 in plane XIX, Fig. 20 yes Fig.18 A cross-sectional view of the sheath body 4 in plane XX, Fig.21 Yes means Fig.18 A top view of the sheath 4.
[0068] Especially if Figure 18 to Figure 21 As shown, the sheath body 4 includes: a back plate portion 40, side plate portions 41 rising from both side edges of the back plate portion 40, and sheath engaging claws 42 protruding from the top ends of the side plate portions 41 in a direction approaching each other. The sheath body 4 of this embodiment includes a plurality of sheath engaging claws 42 separated from each other in the longitudinal direction D1. The side plate portions 41 are separated in the width direction D2.
[0069] Especially if Fig. 20 As shown, the thickness t of the back plate 40 and the side plate 41 may be 1.2 to 1.5 mm, and the angle θ between the inner surface of the back plate 40 and the inner surface of the side plate 41 may be 80 to 90 degrees.
[0070] The sheath engaging claw 42 protruding from the top end of one side plate 41 protrudes toward the other side plate 41 in the width direction D2, and the sheath engaging claw 42 protruding from the top end of the other side plate 41 protrudes toward one side plate 41 in the width direction D2. Fig.18 As shown, in the illustrated embodiment, the sheath engaging claw 42 protruding from the top end of one side plate portion 41 and the sheath engaging claw 42 protruding from the top end of the other side plate portion 41 are arranged at the same position in the longitudinal direction D1. However, these sheath engaging claws 42 may also be arranged offset in the longitudinal direction D1.
[0071] In the illustrated embodiment, the sheath engaging claw 42 protrudes from the top end of the side plate portion 41. However, the sheath engaging claw 42 may protrude from a position lowered from the top end of the side plate portion 41 toward the back plate portion 40. For example, the area from the top end of the side plate portion 41 to 1 / 3, more specifically 1 / 4, and even more specifically 1 / 5 of the total height of the side plate portion 41 along the thickness direction D3 may be understood as the top end portion.
[0072] Especially if Fig.19 As shown, a plurality of through holes 43 arranged below the sheath engaging claws 42 may be provided in the back plate portion 40 .
[0073] Here, especially Fig.13 As shown, in the state where the ring binder is assembled, the sheath engaging claw 42 is inserted into the engaging groove 70 of the first seat plate 1 and the second seat plate 2. As a result, the first seat plate 1 and the second seat plate 2 are pressed against each other and held. Preferably, the protrusion amount PA of the sheath engaging claw 42 from the side plate 41 (see Fig.19 ) is the depth De of the engaging groove 70 (refer to Fig.11 ) is more than 1 / 3. Fig.19 As shown in FIG. 1 , the protrusion amount PA of the sheath engaging claw 42 may be the distance in the width direction D2 between the tip of the sheath engaging claw 42 and the root position of the sheath engaging claw 42 in the inner surface of the side plate portion 41. Fig.11 As shown, the engaging groove 70 has 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 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 70 may be the distance in the width direction D2 from the bottom surface 700 to the top of the second wall portion 702. Depending on the embodiment, the first wall portion 701 may be omitted. In this case, the engaging groove 70 is formed by the surface of the second wall portion 702 on the surface side and the bottom surface 700. In addition, in the illustrated embodiment, the bottom surface 700 of the engaging groove 70 is set as an arc surface, but there is also a case where the bottom surface 700 is formed by a flat surface when the first wall portion 701 is omitted. By making the protrusion amount PA of the sheath engaging claw 42 more than 1 / 3 of the depth De of the engaging groove 70, the vertical separation of the first seat plate 1 and the second seat plate 2 and the sheath body 4 can be more reliably suppressed. On the other hand, it becomes difficult to engage the sheath engaging claws 42 with the engaging grooves 70 by pressing the sheath body 4 to the first seat plate 1 and the second seat plate 2 from below.
[0074] Especially if Fig.21 As shown, the sheath end engaging claws 421 disposed at both ends of the sheath body 4 in the long dimension direction D1 are provided in the sheath engaging claws 42. The area from both ends of the sheath body 4 to 1 / 3, more specifically 1 / 4, and further specifically 1 / 5 of the total length of the sheath body 4 in the long dimension direction D1 can be understood as the two ends. As in the sheath body 4 of this 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 in each of the side plate portions 41 can be the sheath engaging claw 42 closest to one end of the sheath body 4 and the sheath engaging claw 42 closest to the other end of the sheath body 4.
[0075] The sheath end engaging claws 421 each include: a sheath inclined side surface 421a disposed on the outer side (the side opposite to the center side) in the longitudinal direction D1 of the sheath body 4 and extending obliquely with respect to the width direction D2; and a sheath positioning side surface 421b disposed on the inner side (the center side) in the longitudinal direction D1 of the sheath body 4 and extending along the width direction D2. In the sheath end engaging claw 421 provided at one end and the sheath end engaging claw 421 provided at the other end, the position of the sheath inclined side surface 421a is reversed to the position of the sheath positioning side surface 421b.
[0076] In addition, at least one sheath intermediate engaging claw 422 is provided in the sheath engaging claw 42, which is arranged between the sheath end engaging claws 421 in the longitudinal direction D1. In the illustrated embodiment, seven sheath intermediate engaging claws 422 are provided in each of the side plate portions 41. The side surfaces on both sides of the sheath intermediate engaging claw 422 extend obliquely with respect to the width direction D2. That is, the sheath intermediate engaging claw 422 is provided with an inclined surface corresponding to the sheath inclined side surface 421a of the sheath end engaging claw 421, but is not provided with a surface extending in the width direction D2 corresponding to the sheath positioning side surface 421b.
[0077] Next, refer to Figure 22 to Figure 25 , the functions or effects of the seat plate end locking claws 71 of the first seat plate 1 and the second seat plate 2 and the sheath end engaging claws 421 and the sheath middle engaging claws 422 of the sheath body 4 are described.
[0078] Fig. 22 It means from Figure 1 An explanatory diagram of a situation in which one end of the sheath body 4 is inserted into the first seat plate 1 and the second seat plate 2, Fig.23 Yes means Fig. 22 1 and 2 are diagrams for explaining the relationship between the seat plate end engaging claw 71 and the sheath end engaging claw 421 in the region XXIII.
[0079] Fig.24 It means from Figure 1 The other end of the sheath body 4 is inserted into the first seat plate 1 and the second seat plate 2. Fig.25 Yes means Fig. 22 1 and 2 are diagrams for explaining the relationship between the seat plate end engaging claw 71 and the sheath intermediate engaging claw 422 in the region XXV of FIG.
[0080] like Fig. 22 and Fig.24 As shown, the ring binder of this embodiment is suitable for inserting the sheath engaging claws 42 of the sheath body 4 into the engaging grooves 70 of the first base plate 1 and the second base plate 2 by relative displacement of the first base plate 1 and the second base plate 2 and the sheath body 4 in the longitudinal direction D1.
[0081] When the relative displacement is performed, the seat plate inclined side surface 71a of the seat plate end locking claw 71 and the sheath inclined side surface 421a of the sheath end engaging claw 421 are configured to allow the seat plate end locking claw 71 to pass over the sheath engaging claw 42 and the sheath end engaging claw 421. In addition, the seat plate positioning side surface 71b of the seat plate end locking claw 71 and the sheath positioning side surface 421b of the sheath end engaging claw 421 are configured to restrict the relative displacement of the first seat plate 1 and the second seat plate 2 and the sheath body 4 in the longitudinal direction D1 by abutting against each other. That is, when the seat plate positioning side surface 71b abuts against the sheath positioning side surface 421b, the relative displacement in the longitudinal direction D1 is restricted, and at other times (when the seat plate inclined side surface 71a abuts against the sheath inclined side surface 421a, when the seat plate inclined side surface 71a abuts against the sheath positioning side surface 421b, and when the seat plate positioning side surface 71b abuts against the sheath inclined side surface 421a), the relative displacement in the longitudinal direction D1 is allowed.
[0082] In such Fig. 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 to the right side of the figure, Fig. 22 The seat plate end locking claw 71 on the left side of the figure can pass over the sheath end locking claw 421 toward the right side of the figure (refer to Fig.23 ). After the seat plate end locking claw 71 passes over the sheath end engaging claw 421, 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 surface 71b of the seat plate end locking claw 71 abuts against the sheath positioning side surface 421b of the sheath end engaging claw 421, 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 in the case where the sheath body 4 is engaged with the first seat plate 1 and the second seat plate 2 by relative displacement in the longitudinal direction D1, the displacement of the first seat plate 1 and the second seat plate 2 and the sheath body 4 in the longitudinal direction D1 can be suppressed.
[0083] The side surfaces of the sheath intermediate engaging claws 422 are configured to extend obliquely with respect to the width direction D2, allowing the seat plate end engaging claws 71 to pass over the sheath intermediate engaging claws 722. Fig.24 As shown in the figure, when the other end of the sheath body 4 on the right side of the figure is inserted into the first seat plate 1 and the second seat plate 2 toward the left side of the figure, the Fig.24 The seat plate positioning side 71b of the seat plate end locking claw 71 on the left side of the figure first abuts against the sheath middle clamping claw 422, but can pass over the sheath middle clamping claw 422 toward the left side of the figure (refer to Fig.25 By setting the corner 71c where the seat plate end locking claw 71 abuts against the seat plate positioning side surface 71b as a circular arc surface or an R angle as described above, the seat plate end locking claw 71 can pass over the sheath middle locking claw 422 more smoothly.
[0084] The preferred embodiments of the present invention are described in detail with reference to the accompanying drawings, but the present invention is not limited to the examples given. If a person has common knowledge in the technical field to which the present invention belongs, it is obvious that various variations or modifications can be thought of within the scope of the technical ideas recorded in the claims, and these can naturally be understood as belonging to the technical scope of the present invention.
[0085] The invention described in this specification can be described as follows.
[0086] [1] A ring binding device comprising: two elongated base plates adjacent to each other and extending in parallel; a plurality of half ring portions provided on the front surfaces of the two base plates; and a sheath body disposed on the back surfaces of the two base plates and clamping the two base plates from the outside in the width direction to press the two base plates against each other and hold them, wherein the sheath body is elongated and made of a material including a resin material.
[0087] As the two seat plates rotate and displace under the pushing force of the sheath, the top ends of the semi-ring parts approach and separate from each other, wherein:
[0088] A snap-fit groove extending along the longitudinal direction is provided on the outer side surface of each of the two seat plates.
[0089] The inside of the engaging groove is provided with seat plate end locking claws arranged at both ends of the two seat plates in the longitudinal direction.
[0090] The seat plate end locking claws respectively include: a seat plate inclined side surface, which is arranged on the inner side of the seat plate in the long dimension direction and extends obliquely relative to the width direction; and a seat plate positioning side surface, which is arranged on the outer side of the seat plate in the long dimension direction and extends along the width direction.
[0091] The sheath body comprises: a back plate; side plates rising from both side edges of the back plate; and sheath engaging claws protruding from the top ends of the side plates toward each other and inserted into the engaging grooves.
[0092] The sheath engaging claws are provided with sheath end engaging claws disposed at both ends of the sheath body in the longitudinal direction.
[0093] The sheath end engaging claws respectively have: a sheath inclined side surface, which is arranged on the outer side of the sheath body in the long dimension direction and extends obliquely relative to the width direction; and a sheath positioning side surface, which is arranged on the inner side of the sheath body in the long dimension direction and extends along the width direction.
[0094] The seat plate inclined side surface and the sheath inclined side surface are configured to allow the seat plate end locking claw to pass over the sheath engaging claw and the sheath end engaging claw.
[0095] The seat plate positioning side surface and the sheath positioning side surface are configured to restrict relative displacement of the two seat plates and the sheath body in the longitudinal direction by abutting against each other.
[0096] [2] The ring binder according to [1], wherein:
[0097] The sheath engaging claws are provided with at least one sheath intermediate engaging claw disposed between the sheath end engaging claws in the longitudinal 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, so as to allow the seat plate end locking claw to pass over the sheath intermediate engaging claw.
[0099] [3] The ring binder according to [1] or [2], wherein:
[0100] The protrusion 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 in the longitudinal direction are open.
[0103] [5] The ring binder according to any one of [1] to [4], wherein:
[0104] A convex surface with protrusions and a concave surface with protrusions that fit into each other are provided on the inner side surfaces of each of the two seat plates, and opposing protrusions are respectively formed on the convex surface with protrusions and the concave surface with protrusions. The opposing protrusions collide with each other in the middle of the rotational displacement, overcome the pushing force and cross over to resist the rotational displacement.
[0105] [6] The ring binder according to any one of [1] to [5], wherein:
[0106] The material comprising the resin material is biomass plastic.
[0107] [7] The ring binder according to [6], wherein:
[0108] The material comprising the resin material includes a material derived from paper, corn, eggshell or shell.
[0109] Description of Reference Numerals
[0110] 1, 2: seat plate;
[0111] 3: half ring part;
[0112] 4: sheath;
[0113] 40: back panel;
[0114] 41: side panel;
[0115] 42: sheath clamping claw;
[0116] 421: sheath end clamping claw;
[0117] 421a: sheath slanted side;
[0118] 421b: sheath positioning side;
[0119] 422: sheath middle clamping claw;
[0120] 6: medial side;
[0121] 60: convex surface with protrusions;
[0122] 60a: opposing protrusions;
[0123] 61: concave with protrusions;
[0124] 61a: opposing protrusions;
[0125] 7: lateral surface;
[0126] 70: snap-fitting slot;
[0127] 71: locking claw at the end of the seat plate;
[0128] 71a: inclined side of seat plate;
[0129] 71b: Seat plate positioning side.
Claims
1. A ring binding device comprising: Two long seat plates are adjacent to each other and extend in parallel; A plurality of half ring portions are provided on the surface sides of the two seat plates; as well as The sheath body is arranged on the back side of the two seat plates, and sandwiches the two seat plates from the outside in the width direction to press the two seat plates against each other and hold them, and the sheath body is elongated and made of a material including a resin material. As the two seat plates rotate and displace under the pushing force of the sheath, the top ends of the semi-ring parts approach and separate from each other, wherein: A snap-fit groove extending in the long dimension direction is provided on the outer side surface of each of the two seat plates. The inside of the engaging groove is provided with seat plate end locking claws arranged at both ends of the two seat plates in the longitudinal direction. The seat plate end locking claws respectively include: a seat plate inclined side surface, which is arranged on the inner side of the seat plate in the long dimension direction and extends obliquely relative to the width direction; and a seat plate positioning side surface, which is arranged on the outer side of the seat plate in the long dimension direction and extends along the width direction. The sheath body comprises: a back plate portion; Side plates, rising from both side edges of the back plate; and sheath engaging claws, protruding from the top ends of the side plates toward each other and inserted into the engaging grooves, The sheath engaging claws are provided with sheath end engaging claws disposed at both ends of the sheath body in the longitudinal direction. The sheath end engaging claws respectively have: a sheath inclined side surface, which is arranged on the outer side of the sheath body in the long dimension direction and extends obliquely relative to the width direction; and a sheath positioning side surface, which is arranged on the inner side of the sheath body in the long dimension direction and extends along the width direction. The seat plate inclined side surface and the sheath inclined side surface are configured to allow the seat plate end locking claw to pass over the sheath engaging claw and the sheath end engaging claw. The seat plate positioning side surface and the sheath positioning side surface are configured to restrict relative displacement of the two seat plates and the sheath body in the longitudinal direction by abutting against each other.
2. The ring binder according to claim 1, wherein: The sheath engaging claws are provided with at least one sheath intermediate engaging claw disposed between the sheath end engaging claws in the longitudinal direction. The side surfaces on both sides of the sheath intermediate engaging claw are configured to extend obliquely with respect to the width direction and to allow the seat plate end locking claw to pass over the sheath intermediate engaging claw.
3. The ring binder according to claim 2, wherein: The protrusion amount of the sheath engaging claw from the side plate portion is 1 / 3 or more of the depth of the engaging groove portion.
4. The ring binder according to any one of claims 1 to 3, wherein: Both ends of the engaging groove portion in the longitudinal direction are open.
5. The ring binder according to any one of claims 1 to 3, wherein: A convex surface with protrusions and a concave surface with protrusions that fit into each other are provided on the inner side surfaces of each of the two seat plates, and opposing protrusions are respectively formed on the convex surface with protrusions and the concave surface with protrusions. The opposing protrusions collide with each other during the rotational displacement, overcome the pushing force and cross over to resist the rotational displacement.
6. The ring binder according to any one of claims 1 to 3, wherein: The material comprising the resin material is biomass plastic.
7. The ring binder according to claim 6, wherein: The material comprising the resin material includes a material derived from paper, corn, eggshell or shell.
Citation Information
Patent Citations
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