Zipper bag
The zipper bag design with handle protrusions generates sufficient friction for one-handed operation, addressing the challenge of opening with one hand and enhancing usability.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- THANTAWAN INDUSTRY PUBLIC COMPANY LIMITED
- Filing Date
- 2023-12-15
- Publication Date
- 2026-05-01
Smart Images
Figure 2026514136000001_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of engineering, and particularly to zipper bags.
Background Art
[0002] Generally, a zipper bag includes a bag body having an internal space formed by two walls and a closed end at the bottom, and an object can be inserted into the space through an opening at the upper end of the bag body. Zippers that can be opened and closed are attached to the inner surfaces of the two side walls of the bag body. Handles are formed by the two walls of the bag body and are installed between the opening and the zipper. While the zipper is closed, to open the zipper by pulling the handles in different directions and insert an object into the space of the bag body through the opening, or conversely, to open the zipper and remove an object in the space of the bag body from the zipper bag, the user has to use both hands.
[0003] However, depending on the situation, the user has to open the zipper bag with one hand by twisting the handle with a finger to spread the zipper. Still, many manufacturers try to create a linear pattern on the surface of the handle to create the frictional force when the user twists the handle with a finger, but the frictional force created by those patterns is often insufficient to enable the user to effectively twist the handle to open the zipper with one hand.
Summary of the Invention
Means for Solving the Problems
[0004] Accordingly, the present invention relates to a zipper bag comprising: a bag body having an internal space formed by two walls and a closed end at the bottom, an object being inserted into the space through an opening at the upper end of the bag body; a zipper including a male zipper attached to one inner wall of the bag body and a female zipper attached to the other inner wall in the same horizontal plane as the male zipper; and a handle which is the two walls of the bag body installed between the opening and the zipper, wherein the zipper bag has a protrusion that protrudes from the surface of the handle and extends linearly parallel to the zipper from one edge of the handle to the other edge, and the distance from the bottom of the protrusion to the top of the zipper is 7.5 to 8.5 mm. The zipper bag is characterized in that the protrusions include: a first protrusion made of two members installed on the outer wall on the same side as the female or male zipper; a second protrusion made of two members installed on the inner wall on the same side as the first protrusion at a position related to the first protrusion in the sense that it receives force applied to the first protrusion by the user's finger; a third protrusion made of one member installed on the inner wall on the side opposite to the second protrusion and installed between the second protrusions; and a fourth protrusion made of one member installed on the outer wall on the same side as the third protrusion at a position related to the third protrusion in the sense that it receives force applied to it by the user's finger. The purpose is to overcome the above-mentioned problems by providing a zipper bag characterized in that the protrusions include: a first protrusion made of two members installed on the outer wall on the same side as the female or male zipper; a second protrusion made of two members installed on the inner wall on the same side as the first protrusion at a position related to the third protrusion in the sense that it receives force applied to it by the user's finger.
[0005] Therefore, it can be seen that when a user attempts to open a zipper bag with one hand, they use their index finger and thumb to hold and compress the first and fourth protrusions, thereby tucking the third protrusion into the two second protrusions. When the user twists the first and fourth protrusions in opposite directions, this creates a frictional force between the second protrusion and the corresponding third protrusion. This frictional force is transmitted through the wall of the bag body to the zipper, ultimately pushing the male and female zippers apart. Furthermore, the distance of 7.5 to 8.5 mm from the bottom of the protrusion to the top of the zipper is an appropriate position for transmitting frictional force from the protrusion to the zipper. As a result, the present invention allows a user to quickly and easily open a zipper bag with one hand. [Brief explanation of the drawing]
[0006] [Figure 1] A zipper bag according to one embodiment of the present invention is shown. [Figure 2] Figure 1 shows the X-X cross-section of the zipper bag. [Figure 3] Another embodiment of the zipper bag according to the present invention is shown. [Figure 4] Figure 3 shows the Y-Y cross-section of the zipper bag. [Figure 5] This shows an X-X cross-section illustrating the distances between various components of a zipper bag. [Figure 6] A Y-Y cross-section is shown, illustrating the distances between various components of a zipper bag in another embodiment. [Modes for carrying out the invention]
[0007] Embodiments of the present invention will be described in more detail with reference to the attached drawings.
[0008] In one embodiment of the present invention, as shown in Figure 1, the zipper bag includes a bag body 1 having an internal space formed by two walls and a closed end at the bottom, into which an object can be inserted through an opening 5 at the upper end of the bag body 1, and the zipper 2 includes a male zipper 21 attached to one inner wall of the bag body 1 and a female zipper 22 attached to the other inner wall in the same horizontal plane as the male zipper 21. The handle 3 is the two walls of the bag body 1 positioned between the opening 5 and the zipper 2. Furthermore, the zipper bag also includes a protrusion 4 that projects from the surface of the handle 3 and extends linearly parallel to the zipper 2 from one edge of the handle 3 to the other edge.
[0009] As shown in Figure 2, the protrusion 4 is configured to protrude from the surface of the handle 3 and includes a first protrusion 41 made of two members, which is installed on the outer wall on the same side as the female zipper 22 or male zipper 21 (male zipper 21 in this embodiment as shown in Figure 2). A second protrusion 42 made of two members is installed on the inner wall on the same side as the first protrusion 41, at a position related to the first protrusion 41 in the sense that it receives the force applied to the first protrusion 41 by the user's finger. A third protrusion 43 made of one member is installed on the inner wall on the side opposite to the second protrusion 42, and this third protrusion is installed between the second protrusions 42. A fourth protrusion 44 made of one member is installed on the outer wall on the same side as the third protrusion 43, at a position related to the third protrusion 43 in the sense that it receives the force applied to it by the user's finger.
[0010] When the user attempts to open the zipper bag with one hand, they use their index finger and thumb to hold and compress both the first protrusion 41 and the fourth protrusion 44. The second protrusion 42 and the third protrusion 43 receive force from the user's hand and move toward each other until the third protrusion 43 is contained within the space between the two second protrusions 42. The user then twists the first protrusion 41 and the fourth protrusion 44 in opposite directions, that is, pushing the first protrusion 41 downward on the axis of the bag body 1 (towards the closed end at the bottom of the bag body) and pushing the fourth protrusion 44 upward on the axis of the bag body 1 (towards the opening 5), or pushing the first protrusion 41 upward on the axis of the bag body 1 and pushing the fourth protrusion 44 downward on the axis of the bag body 1. This twisting motion creates a frictional force between the second protrusion 42 and the corresponding third protrusion 43. This frictional force is transmitted through the wall of the bag body 1 to the zipper 2, ultimately pushing the male zipper 21 and the female zipper 22 apart.
[0011] As described above, the structure and operation involve a protrusion 4 on the handle 3, which generates a significant direct force on the zipper while opening the zipper bag. This allows the user to quickly and easily open the zipper bag with just one hand, that is, separate the male and female zippers.
[0012] Additionally, as shown in Figure 5, the zipper 2 consists of a male zipper 21 and a female zipper 22. The male zipper 21 consists of a male zipper base 210 and a male snap fitting portion 211. The female zipper 22 consists of a female zipper base 220 and a female snap fitting portion 221. The female snap fitting portion is structurally harmonized and compatible with the male snap fitting portion 211. The distance B from the bottom of the protrusion (second protrusion 42 in this embodiment) to the top of the zipper (female snap fitting portion 221 in this embodiment) is preferably 7.5 to 8.5 mm, and a more preferable distance is 8 mm.
[0013] The distance B determined above is a reasonable distance for transmitting the frictional force between the second protrusion 42 and the third protrusion 43 through the wall of the bag body 1 to the zipper 2, thereby enabling the user to quickly and easily open the zipper bag.
[0014] Additionally, as shown in Figure 5, the distance A from the bottom of the convex portion to the top of the convex portion is preferably 1.8 mm to 2.2 mm, and more preferably 2 mm. In this embodiment, this refers to the distance from the bottom of the second convex portion 42 to the top of the first convex portion 41.
[0015] The distance A determined above is a suitable distance for transmitting the force of the user's hand through the first protrusion 41 and the fourth protrusion 44 to the second protrusion 42 and the third protrusion 43 so that the third protrusion 43 and the second protrusion 42 move toward each other until the third protrusion 43 is contained within the space between the two second protrusions 42. When the user twists the first protrusion 41 and the fourth protrusion 44 in opposite directions, this creates sufficient friction between the second protrusion 42 and the third protrusion 43, allowing the user to open the zipper bag more quickly and easily.
[0016] Next, another embodiment of the present invention will be described.
[0017] In another embodiment of the present invention, as shown in Figure 3, the zipper bag includes a bag body 1 having an internal space formed by two walls and a closed end at the bottom, into which an object can be inserted through an opening 5 at the upper end of the bag body 1, and the zipper 2 includes a male zipper 21 attached to one inner wall of the bag body 1 and a female zipper 22 attached to the other inner wall in the same horizontal plane as the male zipper 21. The handle 3 is the two walls of the bag body 1 positioned between the opening 5 and the zipper 2. Additionally, the zipper bag also includes a protrusion 4 that projects from the surface of the handle 3 and extends linearly parallel to the zipper 2 from one edge of the handle 3 to the other edge.
[0018] As shown in Figure 4, the protrusion 4 includes a first protrusion 401 of a single member that protrudes from the surface of the handle 3 and is installed on the outer wall on the same side as the female zipper 22 or male zipper 21 (male zipper 21 in this embodiment as shown in Figure 4). A second protrusion 402 of a single member is installed on the inner wall on the same side as the first protrusion 401, at a position related to the first protrusion 401 in the sense that it receives the force applied to the first protrusion 401 by the user's finger. A third protrusion 403 of a single member is installed on the inner wall on the side opposite to the second protrusion 402, on a horizontal plane different from the second protrusion 402. A fourth protrusion 404 of a single member is installed on the outer wall on the same side as the third protrusion 403, at a position related to the third protrusion 403 in the sense that it receives the force applied to it by the user's finger. In other words, in this other embodiment of the present invention, there are a total of four protrusions, and the second protrusion 402 is positioned higher than the third protrusion 403, that is, closer to the opening 5 of the bag body 1 than the third protrusion 403.
[0019] When the user attempts to open the zipper bag with one hand, they use their index finger and thumb to hold and compress both the first protrusion 401 and the fourth protrusion 404. The second protrusion 402 and the third protrusion 403 move toward each other in response to the force from the user's hand. At this time, the user twists the first protrusion 401 downward (in direction a in Figure 4) along the axis of the bag body 1, and pushes the fourth protrusion 44 upward (in the opposite direction to direction a in Figure 4) along the axis of the bag body 1. This twisting motion creates a frictional force between the second protrusion 402 and the third protrusion 403. This frictional force is transmitted through the wall of the bag body 1 to the zipper 2, ultimately pushing the male zipper 21 and the female zipper 22 apart.
[0020] According to the structure and operation described above, four protrusions 401, 402, 403, and 404 are provided on the handle 3. This creates a large direct force on the zipper while opening the zipper bag, and allows the user to quickly and easily open the zipper bag with just one hand, that is, separate the male and female zippers.
[0021] On the other hand, if the user of the zipper bag according to the present invention twists the first protrusion 401 upward (in the opposite direction to direction a in Figure 4) along the axis of the bag body 1, or twists the fourth protrusion 404 downward (in direction b in Figure 4) along the axis of the bag body 1, there will be no frictional force between the second protrusion 402 and the third protrusion 403. Consequently, there will be no frictional force transmitted to the zipper 2 through the wall of the bag body 1, and as a result, the user will not be able to separate the male zipper 21 and the female zipper 22.
[0022] Additionally, as shown in FIG. 6, the zipper 2 is composed of a male zipper 21 and a female zipper 22. The male zipper 21 consists of a male zipper base 210 and a male snap-fitting portion 211. The female zipper 22 consists of a female zipper base 220 and a female snap-fitting portion 221, and the female snap-fitting portion is structurally harmonious and compatible with the male snap-fitting portion 211. It is preferable that the distance B' from the bottom of the convex portion (in this embodiment, the third convex portion 403) to the top of the zipper (in this embodiment, the female snap-fitting portion 221) is 7.5 - 8.5 mm, and a more preferable distance is 8 mm.
[0023] The distance B' determined above is a proper distance for transmitting the frictional force between the second convex portion 402 and the third convex portion 403 through the wall of the bag body 1 to the zipper 2, thereby enabling the user to quickly and easily open the zipper bag.
[0024] Additionally, as shown in FIG. 6, it is preferable that the distance A' from the bottom of the convex portion to the top of the convex portion is 1.2 mm - 1.6 mm, and more preferably 1.4 mm. In this embodiment, the distance A' is the distance from the bottom of the third convex portion 403 to the top of the second convex portion 402.
[0025] The distance A' determined above is a distance suitable for transmitting the force of the user's hand through the first convex portion 401 and the fourth convex portion 404 to the second convex portion 402 and the third convex portion 403 so that the second convex portion 402 and the third convex portion 403 move towards each other. When the user twists and moves the first convex portion 401 in the direction a and the fourth convex portion 404 in the opposite direction, sufficient frictional force is created between the second convex portion 402 and the third convex portion 403, enabling the user to more quickly and easily open the zipper bag.
[0026] Also, as shown in FIGS. 5 and 6, the thicknesses C and C' of the bag wall located between the zipper 2 and the convex portion 4 are preferably 0.10 - 0.12 mm, more preferably 0.11 mm.
[0027] In addition to the various embodiments described in detail herein, several modifications can be clearly understood to obtain a zipper bag that can be opened quickly and easily by the user with one hand, and these modifications can be made by those skilled in the art of zipper bags. Within the scope and intent of the present invention as set forth in the appended claims, for example, in the case of a zipper bag as shown in Figure 2, the zipper bag may be prepared such that the first protrusion 41 and the second protrusion 42 are on the same side as the female zipper 22, and the third protrusion 43 and the fourth protrusion 44 are on the same side as the male zipper 21, or in the case of a zipper bag as shown in Figure 4, the first protrusion 401 and the second protrusion 402 are on the same side as the female zipper 22, and the third protrusion 403 and the fourth protrusion 404 are on the same side as the male zipper 21, and so on.
[0028] <Best mode for carrying out the invention> As described in the description of the embodiments for carrying out the invention.
Claims
1. A bag body having an internal space formed by two walls and a closed end at the bottom, wherein an object can be inserted into the space through an opening at the upper end of the bag body, A zipper including a male zipper attached to one inner wall of the bag body, and a female zipper attached to the other inner wall in the same horizontal plane as the male zipper, The two walls of the bag body, which are the handles, are installed between the opening and the zipper. A zipper bag containing, The zipper bag has a protrusion that extends linearly parallel to the zipper from one edge of the handle to the other edge of the handle, and the distance from the bottom of the protrusion to the top of the zipper is 7.5 to 8.5 mm. The aforementioned protrusion is, The first protrusion of the two members is installed on the outer wall on the same side as the female or male zipper, A second protrusion of two members is installed on the inner wall on the same side as the first protrusion, at a position related to the first protrusion in the sense that it receives the force applied to the first protrusion by the user's finger, A third protrusion of a member is installed on the inner wall on the side facing the second protrusion and is installed between the second protrusions, A fourth protrusion of a member is installed on the outer wall on the same side as the third protrusion, at a position related to the third protrusion in the sense that the force applied thereto by the user's finger receives the third protrusion. including A zipper bag characterized by the following features.
2. The zipper bag according to claim 1, wherein the distance from the bottom of the protrusion to the top of the zipper is 8 mm.
3. The zipper bag according to claim 1 or 2, wherein the distance from the bottom of the protrusion to the top of the protrusion is 1.8 mm to 2.2 mm.
4. The zipper bag according to claim 3, wherein the distance from the bottom of the protrusion to the top of the protrusion is 2 mm.
5. A bag body having an internal space formed by two walls and the closed end at the bottom, wherein an object can be inserted into the space from the opening at the upper end of the bag body, A zipper including a male zipper attached to one inner wall of the bag body, and a female zipper attached to the other inner wall in the same horizontal plane as the male zipper, The two walls of the bag body, which are the handles, are installed between the opening and the zipper. A zipper bag containing, The zipper bag has a protrusion that extends linearly parallel to the zipper from one edge of the handle to the other edge of the handle, and the distance from the bottom of the protrusion to the top of the zipper is 7.5 to 8.5 mm. The aforementioned protrusion is, The first protrusion of a member installed on the outer wall on the same side as the female or male zipper, A second protrusion of a member is installed on the inner wall on the same side as the first protrusion, at a position related to the first protrusion in the sense that it receives the force applied to the first protrusion by the user's finger, On the inner wall facing the second protrusion, the third protrusion of a member is installed on a horizontal plane different from the second protrusion, The fourth protrusion of a member is installed on the outer wall on the same side as the third protrusion, at a position related to the third protrusion in the sense that the force applied thereto by the user's finger receives the third protrusion. including A zipper bag characterized by the following features.
6. The zipper bag according to claim 5, wherein the distance from the bottom of the protrusion to the top of the zipper is 8 mm.
7. The zipper bag according to claim 5 or 6, wherein the distance from the bottom of the protrusion to the top of the protrusion is 1.2 mm to 1.6 mm.
8. The zipper bag according to claim 7, wherein the distance from the bottom of the protrusion to the top of the protrusion is 1.4 mm.
9. The zipper bag according to any one of claims 1 to 8, wherein the thickness of the bag wall at the position between the zipper and the protrusion is 0.10 to 0.12 mm.
10. The zipper bag according to claim 9, wherein the thickness of the bag wall at the position between the zipper and the protrusion is 0.11 mm.