Bag lid locking mechanism

Abstract

To provide a locking device for a bag lid that allows the lid to be opened / closed at a single action and prevents the lid from being accidentally unlocked when the lid is locked.SOLUTION: Rotating slider moving means 10 in a direction intersecting the plane of a lid causes an engaging portion 8 to disengage from a locking portion 14 and a lid plate 2 to lift from a main body 1 in a concurrent manner, opening inside the main body 1. This allows unlocking and opening / closing the lid plate 2 simultaneously at a single action.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present invention relates to a device for detachably locking a bag lid that closes an opening of a bag body to the bag body.

Background Art

[0002] Conventional locking devices for school bags have, as described in Patent Document 1, in a school bag having a school bag body and a lid member attached thereto to cover the opening thereof, a locking fitting is attached to an end of the lid member, and a locking device is provided on the bottom surface of the school bag body, and the two are detachably locked to each other. The lock changes between a locked state and an open state by rotating the knob of the locking fitting.

[0003] Next, the school bag described in Patent Document 2 has a lid locking portion provided on the back surface of the lid member, an engaging portion provided on the main body side facing it, and the two are detachably connected by magnetic force.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] The school bag described in Patent Document 1 locks and unlocks the lid by rotating the knob on the bottom surface of the school bag body for the opening and closing operation of the lock, and then releases the lid from the body. Therefore, it requires two operations for opening the lid, and has the drawback that the opening operation is troublesome. Furthermore, the school bag described in Patent Document 2 uses magnetic attraction between the locking part on the lid and the engaging part on the main body to lock them together. As a result, the lid is easily detached from the main body, which is a drawback as it lacks reliability in locking. Therefore, the objective of the present invention is to provide a bag lid locking device that allows for simultaneous unlocking and lid opening in a single operation, making it easy to use. [Means for solving the problem]

[0006] The present invention as described in claim 1 comprises a bag body 1 having an opening at one end, A cover plate 2 is provided on the opening edge at one end of the main body 1, A first member 3 is fixed to the edge of the cover plate 2, It comprises a main body 1 or a second member 5 fixed to an auxiliary storage section 4 of the main body 1, In a bag lid locking device in which a first member 3 and a second member 5 are detachably locked together, The first member 3 includes a casing 7 having one or more recesses 6, The recessed portion 6 has an engaging portion 8 which is positioned so that at least a part of it can move in and out, A slider 9 is provided within the casing 7 so as to be movable in the planar direction of the cover plate 2, A slider moving means 10 is pivotally supported by the casing 7 and adjacent to the slider 9, with one end exposed outward from the edge of the cover plate 2, rotating in a direction intersecting the plane direction, and the other end moving the slider 9 in the plane direction as it rotates, The system comprises a biasing means 11 for biasing the slider 9 in the planar direction, The second member 5 has a projection 12 that enters into the fitting recess 6 of the first member 3, and a locking portion 14 provided on the projection 12. This is a locking device for a bag lid in which, when the lid plate 2 is closed against the biasing means 11, the engaging portion 8 of the slider is engaged with the locking portion 14 of the second member 5, thereby locking the lid plate 2.

[0007] The present invention as described in claim 2 is a bag lid locking device as described in claim 1, The slider moving means 10 consists of a cam mechanism, The cam mechanism comprises a knob portion 10a provided at one end, a pivot portion 10c provided in the middle, and a curved portion 10b provided at the other end, the outer circumference of which is eccentric with respect to the pivot portion 10c. It is equipped with, The curved portion 10b is in contact with the slider 9. This is a bag lid locking device configured such that when the knob 10a is rotated, the slider 9 moves in the plane direction.

[0008] The present invention as described in claim 3 is a bag lid locking device as described in claim 1, The slider moving mechanism 10 consists of a link mechanism, which comprises a first link 26, a second link 27, and a slider 9. One end of the first link 26 is pivotally supported on one end of the second link 27, the middle of the first link 26 is pivotally supported on the casing 7 28, and the other end of the second link 27 is pivotally supported on the slider 9. This is a bag lid locking device configured such that when the first link 26 is rotated around the pivot 28, the slider 9 moves in the planar direction.

[0009] The present invention as described in claim 4 is a bag lid locking device as described in claim 2, The slider moving mechanism 10 is a bag lid locking device equipped with a spring mechanism 15 that biases the knob portion 10a toward the main body 1.

[0010] The present invention as described in claim 5 is a bag lid locking device as described in any one of claims 1 to 4, The fitting recesses 6 of the first member 3 are locking devices for the bag lid, with at least two of them spaced apart in the height direction of the main body 1.

[0011] The present invention as described in claim 6 is a bag lid locking device as described in any one of claims 1 to 4, The first member 3 and / or the second member 5 are equipped with at least two magnets 16 spaced apart in the width direction of the main body 1, and these magnets are attracted to the magnetic material 17 of the second member 5, forming a locking device for the bag lid. [Effects of the Invention]

[0012] The invention according to claim 1 is a locking device for a bag lid in which a first member 3 and a second member 5 are detachably locked, The first member 3 includes a casing 7, a slider 9 that moves in the plane direction of the casing and has an engaging portion 8, and a slider moving means 10 that is adjacent to the slider 9 and is exposed outward from the edge of the lid plate 2 and rotates in a direction intersecting the plane direction. The second member 5 has a locking portion 14 that enters the fitting recess 6 of the first member 3 and is locked to the engaging portion 8 of the first member 3. With this structure, when the slider moving means 10 is rotated in a direction intersecting the plane direction, the engaging portion 8 is disengaged from the locking portion 14, and at the same time, the lid plate 2 is lifted from the main body 1, and the inside of the main body 1 can be opened. That is, there is an effect that unlocking and opening and closing of the lid plate 2 can be achieved with one operation. This eliminates the trouble of performing the unlocking operation and the opening and closing operation of the lid plate separately as in the conventional bag lid, and is easy to use.

[0013] The invention according to claim 2 is the above configuration, The slider moving means 10 is a cam mechanism, and the cam mechanism includes a knob portion 10a provided at one end, a shaft support portion 10c provided in the middle, and a curved surface portion 10b provided at the other end and having an outer periphery eccentric with respect to the shaft support portion 10c. The curved surface portion 10b contacts the slider 10, When the knob portion 10a is rotated, the slider is configured to move in the plane direction. Thus, by using a cam mechanism for the slider moving means, a compact and space-saving locking device is obtained.

[0014] The invention according to claim 3 is a locking device for a bag lid in which one end of a first link 26 constituting a link mechanism is pivotally supported by one end of a second link 27, the middle of the first link 26 is pivotally supported 28 by a casing 7, and the other end of the second link 27 is pivotally supported by a slider 9. When the first link 25 is rotated, the slider 9 is moved in the plane direction. Thus, by using a link mechanism for the slider moving means, a locking device that is compact and ensures reliable operation can be obtained.

[0015] The invention according to claim 4 is the locking device for the bag lid according to claim 2, where spring means 15 for biasing the knob portion 10a toward the main body 1 side is provided. Thereby, the locking and unlocking of the locking device can be surely performed.

[0016] The invention according to claim 5 is such that the fitting recesses 6 of the first member 3 are arranged at least two in the height direction of the main body 1 with a spacing therebetween. Thereby, according to the quantity of textbooks or the like stored in the main body, the locking position of the cover plate 2 can be changed.

[0017] The invention according to claim 6 is such that at least two magnets 16 are arranged in the width direction of the main body 1 on the first member 3 and / or the second member 5, and they are adsorbed to the magnetic body 17 of the first member 3. Thereby, the locking effect can be enhanced.

Brief Description of the Drawings

[0018] [Figure 1] Exploded perspective view of the first member 3 used in the first embodiment of the locking device for the bag lid of the present invention. [Figure 2] Exploded perspective view of the second member 5 used in the first embodiment. [Figure 3] Explanatory view of the attachment of the main parts where the first member 3 and the second member 5 of the device are attached to a school bag. [Figure 4] Perspective view showing the state where the first member 3 and the second member 5 of the device are locked. [Figure 5] Cross-sectional view taken along the arrow V-V in FIG. 4. [Figure 6] Cross-sectional view taken along the arrow VI-VI in FIG. 3. [Figure 7] Explanatory view showing the state where the second member 5 is separated from the first member 3 from the locked state in FIG. 3. [Figure 8]A side view showing another embodiment of the second member 5 of the present invention. [Figure 9] This is a cross-sectional view of the slider moving means 10 of a second embodiment of the bag lid locking device of the present invention, where (a) shows the locking state of the projection 12 of the second member 5 and the slider 9 of the first member 3, and (b) shows the separated state. [Modes for carrying out the invention]

[0019] Next, embodiments of the present invention will be described based on the drawings. [Examples]

[0020] Figure 1 is an exploded perspective view of the first member 3 of the locking device according to the first embodiment of the present invention. The first member 3 has a casing 7, which has a base 7a with an open top end and an upper cover 7b that fits over the upper end. Inside the casing 7, as shown in Figures 1 and 3, a slider 9 and a slider moving mechanism 10 are housed. The slider moving mechanism 10 has a knob 10a at one end, which is exposed to the outside from the cover plate 2 as shown in Figure 3. A pivot 10c is formed in the middle of the knob 10a. This pivot 10c is fixed to the casing 7 via a second biasing mechanism 15. On the opposite side of the pivot support portion 10c, a cam-shaped curved portion 10b is formed, which is eccentric with respect to the pivot support portion 10c. In the figure, the curved portion 10b protrudes from the flat surface toward the upper cover 7b, as shown in Figure 5. The second biasing means 15 biases the flat surface of the knob portion 10a so that it is parallel to the upper cover 7b of the casing 7. A torsion spring or the like can be used for the second biasing means 15.

[0021] The base 7a and top cover 7b of the casing 7 have fitting recesses 6 formed in positions that align with each other. The slider 9 also has fitting recesses 6 formed therein, and a part of the inner periphery of the fitting recess 6 of the slider 9 has an engaging portion 8 formed therein that protrudes toward the center of the fitting recess 6. A slider tip 9a is formed at one end of the slider 9, and this slider tip 9a protrudes from the flat surface of the slider 9 toward the upper cover 7b, inclined upwards as shown in Figure 5. The slider tip 9a and the tip of the curved portion 10b of the knob portion 10a are adjacent to each other and in contact. A first biasing means 11 is positioned between the other end of the slider 9 and the casing 7. The first biasing means 11 biases the slider 9 outward (towards the lower surface of the main body 1). When the slider 9 is biased, the engaging portion 8 protrudes from the inner periphery of the recessed portion 6. As this first biasing means 11, a coil spring, a leaf spring, or the like can be used. As shown in Figure 1, a pair of bottomed holders 30 are arranged on both sides of the base 7a in the width direction, and magnets 16 are housed inside these holders 30. These holders 30 are made of a magnetic material 17 such as a steel plate.

[0022] Figure 2 is an exploded perspective view of the second member 5. The second member 5 comprises the second member body 5a, the second crimping plate 24, and the bottom plate 21. The second member body 5a has a recess in the middle of its longitudinal direction, where the projection 12 is exposed. One side of the projection 12 is open, and a locking portion 14 is formed on its upper edge in the figure, which locks with the engaging portion 8 (Figure 1) of the slider 9 of the first member 3. Storage compartments for a pair of magnets 16 are formed on both sides of the second member body 5a in the longitudinal direction. The second crimping plate 24 is a magnetic material made of steel plate that aligns with the upper surface of the second member body 5a. Bent legs 20 are formed on both sides of the second member 5 of the second crimping plate 24 in the longitudinal direction and on both sides in the width direction.

[0023] Figure 3 is an explanatory diagram showing the first component 3 and the second component 5 of the device attached to a school bag. In this embodiment, it can be applied to a school bag as an example of a bag. The main body 1 of the school bag is formed in the widely known box shape with an open top, and one end of the lid plate 2 is connected to one edge of the opening. An auxiliary storage compartment 4 is usually formed on the front of the main body 1. As shown in Figure 3, the first member 3 is positioned on the other edge of the cover plate 2, on its underside, and the knob portion 10a of the slider moving means 10 of the first member 3 is attached so as to protrude outward from the other edge of the cover plate 2. In this embodiment, the first crimping plate 18 is fixed to the top cover 7b. Then, the first member 3 is fixed to the back side of the other edge of the lid plate 2 by crimping. Alternatively, instead of the first crimping plate 18, the entire first member 3 may be fixed to the lid plate 2 with eyelets.

[0024] In this example, the second member 5 is attached to the flat surface of the auxiliary storage section 4 that protrudes from the surface of the main body 1 of the bag. The second member 5 can be fixed by passing the bent leg 20 of the second crimping plate 24 through the auxiliary storage section 4 and crimping its tip. The bottom plate 21 of the second component 5 is positioned on the back side of the auxiliary storage section 4 and is fixed to the back side of the auxiliary storage section 4 by crimping the tips of the bent legs 20. The second component 5 may be directly attached to the surface of the main body 1 of the bag if there is no auxiliary storage compartment. The second member 5 is attached in a direction such that its longitudinal direction aligns with the width direction of the first member 3. Furthermore, the second member 5 is attached such that the locking portion 14 formed on its projection 12 faces the engaging portion 8 formed in the fitting recess 6 of the first member 3.

[0025] (action) Figure 4 is a perspective view showing the state in which the first member 3 and the second member 5 of the device are locked together. Figure 5 is a cross-sectional view taken along the VV line in Figure 4, and Figure 6 is a cross-sectional view taken along the VI-VI line in Figure 4. As shown in Figures 4, 5, and 6, when the cover plate 2 is closed to the main body 1, the projection 12 of the second member 5 fits into the fitting recess 6 of the first member 3, and the locking portion 14 of the projection 12 is locked into the engaging portion 8 of the fitting recess 6. In this locked state, as shown in Figure 6, the magnet located inside the third member 3 and the magnet located in the second member 5 are attracted to each other via the second crimping plate 24. Furthermore, in this state, as shown in Figure 5, the engaging portion 8 of the recessed portion 6 enters the locking portion 14 of the projection 12. This structure securely locks the first member 3 and the second member 5 together, preventing the lid plate 2 from easily separating from the main body 1, and eliminating the risk of the lid plate 2 being unintentionally opened even if a child jumps on it.

[0026] In this first embodiment, a cam mechanism is used as the slider moving means 10. The slider 9 can slide along its longitudinal direction inside the first member 3 by operating the slider moving means 10. Figure 7 is an explanatory diagram showing the state in which the second member 5 is separated from the first member 3. To open the protrusion 12, in Figure 7, move the knob 10a of the slider moving means 10 so that it lifts towards the surface side of the cover plate 2. As the knob 10a moves, the curved portion 10b rotates around the pivot portion 10c, and the tip of the curved portion 10b tilts to the left in the figure. Since the tip of the curved portion 10b is in contact with the tip 9a of the slider 9, the slider 9 moves in a way that pushes it to the left in the figure. Then, the engaging portion 8 of the slider 9 disengages from the locking portion 14 of the projection 12. In that state, you can open the lid plate 2 by pulling it outwards. In other words, the slider moving mechanism 10 here allows for the simultaneous opening of the cover plate 2 and the release of the engaging portion 8 and locking portion 14 with a single touch by pulling the knob portion 10a toward the surface side of the cover plate 2. Therefore, opening the cover plate 2 is extremely easy.

[0027] Figure 8 is a side view showing another embodiment of the second member 5. In the first embodiment, the second member 5 was attached to the flat surface of the auxiliary storage section 4 of the main body 1 of the bag, but this is an example in which the second member 5 is attached to the inclined surface of the auxiliary storage section 4. In this case, as shown in Figure 8, a slope matching the inclined surface of the auxiliary storage section 4 is formed at the contact point of the second member body 5a with the surface of the auxiliary storage section 4. [Examples]

[0028] As the slider movement mechanism 10, a link mechanism can be used instead of the cam mechanism in Figure 7, as shown in Figure 9. (In Figure 9, the cover plate 2 and the main body 1 or auxiliary storage section 4 are not shown.) In the embodiment shown in Figure 9, the slider moving means 10 is configured as a link mechanism consisting of a first link 26, a second link 27, and a slider 9. Specifically, the middle portion of the first link 26 is pivotally supported (fixed axis) at the pivot position 28 of the casing 7 of the first member 3, one end of the first link 26 is pivotally supported by the second link 27 on a movable axis 29, and the other end of the second link 27 is pivotally supported by the slider 9 on a movable axis. As described above, when the projection 12 is fitted into the recess 6 of the first member 3, the locking portion 14 of the projection 12 is locked into the engaging portion 8 of the slider 9. Next, when the first link 26 of the slider moving mechanism 10 is lifted as shown in Figure 9(b), the first link 6 rotates at the pivot position 28, and as it rotates, the movable shaft 29 moves downward in the figure. As the movable shaft 29 moves, the other end of the second link 27 moves to the left in the figure. As the other end of the second link 27 moves, the slider 9 moves to the left in the figure. This separates the locking portion 14 of the projection 12 from the engaging portion 8 of the slider 9, allowing the first member 3 to be moved to the outer surface side of the cover plate 2.

[0029] As the slider movement means 10, in the first embodiment a cam mechanism was used, and in the second embodiment a link mechanism was used. However, the slider moving mechanism 10 is not limited to a cam mechanism or a link mechanism. For example, the slider moving mechanism 10 and the slider 9 can be formed as a single unit, and the slider moving mechanism 10 can simply be pushed into the back of the casing 7. As shown in Figures 3 and 4, it is preferable that at least two of the fitting recesses 6 of the first member 3 are spaced apart in the height direction of the main body 1. In this case, the longitudinal direction of the first member 3 is aligned with the height direction of the main body 1. The planar direction of the cover plate 2 is the direction in which the slider 9 can move inside the casing 7 of the first member 3 (in the two embodiments described above, the direction along the longitudinal direction of the first member 3). [Industrial applicability]

[0030] This invention can be used as a device for detachably attaching a bag lid, which closes the opening of the bag body, to the bag body. It is particularly suitable for use with school backpacks. However, the present invention is not limited to school bags, but can also be applied to other types of bags with a lid, such as tote bags, shoulder bags, and handbags. [Explanation of Symbols]

[0031] 1 Main unit 2 Lid plate 3. First Member 4. Auxiliary storage compartment 5. Second Member 5a Main Unit 6. Insertion recess 7 Casing 7a Bass 7b Top lid 8 Engaging part 9 Sliders 10 Slider Movement 10a Tapping part 10b Curved part 10c axis branch 11 First biasing means 12. Protrusion

[0032] 14 Locking part 15 Second biasing means 16 Magnets 17 Magnetic material 18. First crimping plate 19 eyelet holes 20 Bent legs 21 Bottom plate 22 Space 23 eyelets 24. Second crimping plate 25 Reinforcement plate 26. Link 1 27. Second Link 28 Pivot position 29 Movable axis 30 holders

Claims

1. The main body of the bag (1) has an opening at one end, A cover plate (2) is provided on the opening edge at one end of the main body (1), A first member (3) is fixed to the edge of the cover plate (2), It comprises a main body (1) or a second member (5) fixed to an auxiliary storage section (4) of the main body (1), In a bag lid locking device in which a first member (3) and a second member (5) are detachably locked together, The first member (3) includes a casing (7) having one or more recesses (6), The recessed portion (6) has an engaging portion (8) which is at least partially positioned to move in and out, A slider (9) is provided within the casing (7) so as to be movable in the planar direction of the cover plate (2), A slider moving means (10) is pivotally supported by the casing (7) and adjacent to the slider (9), with one end exposed outward from the edge of the cover plate (2), rotating in a direction intersecting the plane direction, and the other end moving the slider (9) in the plane direction as it rotates, The device comprises a biasing means (11) for biasing the slider (9) in the planar direction, The second member (5) has a projection (12) that enters into the fitting recess (6) of the first member (3), and a locking portion (14) provided on the projection (12). A locking device for a bag lid, wherein when the lid plate (2) is closed against the biasing means (11), the engaging portion (8) of the slider (9) engages with the locking portion (14) of the second member (5), thereby locking the lid plate (2).

2. In the bag lid locking device according to claim 1, The slider moving means (10) consists of a cam mechanism, The cam mechanism comprises a knob portion (10a) provided at one end, a pivot portion (10c) provided in the middle, and a curved portion (10b) provided at the other end, the outer circumference of which is eccentric with respect to the pivot portion (10c). It is equipped with, The curved portion (10b) is in contact with the slider (9), A locking device for a bag lid, configured such that when the knob (10a) is rotated, the slider (9) moves in the plane direction.

3. In the bag lid locking device according to claim 1, The slider moving means (10) consists of a link mechanism, which comprises a first link (26), a second link (27), and a slider (9), with one end of the first link (26) pivotally supported by one end of the second link (27), the middle of the first link (26) pivotally supported (28) by the casing (7), and the other end of the second link (27) pivotally supported by the slider (9). A locking device for a bag lid, configured such that when the first link (26) is rotated around the pivot (28), the slider (9) moves in the planar direction.

4. In the bag lid locking device according to claim 2, A locking device for a bag lid, in which a slider moving mechanism (10) is provided with a spring mechanism (15) that biases the knob (10a) toward the main body (1).

5. In any of claims 1 to 4, A bag lid locking device in which at least two fitting recesses (6) of the first member (3) are arranged spaced apart in the height direction of the main body (1).

6. In any of claims 1 to 4, A bag lid locking device wherein at least two magnets (16) are arranged on the first member (3) and / or the second member (5) spaced apart in the width direction of the main body (1), and these magnets are attracted to the magnetic material (17) of the second member (5).

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