Expandable double-isolation-layer zipper structure
By adopting a double isolation layer structure and a double-layer slider design in the zipper, the existing zipper is seriously worn after long-term use, and the protective effect and service life are improved.
Patent Information
- Application Number
- CN202421401639.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-18
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-06-18
AI Technical Summary
Existing zippers are prone to wear after long-term use, resulting in reduced stability and safety, especially when applied to the outermost layer of products such as luggage, where wear problems are more prominent.
A double isolation layer zipper structure is adopted, in which the first tape group and the second tape group form two independent isolation layers through suture connection and split arrangement. The slider is designed as a double-layer slider, which can control the two isolation layers simultaneously. open and close.
Through the double isolation layer design, the protective effect of the zipper is improved and the service life is extended. Even if one layer is worn out, the other layer can still provide protection. The strips arranged in the split can be easily replaced, further extending the service life.
Smart Images
Figure CN222443334U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of zippers, and in particular relates to an expandable double-isolation-layer zipper structure. Background Art
[0002] Zippers are connectors that rely on continuously arranged chain teeth to connect or separate items. They are now widely used in clothing, bags, tents, etc.
[0003] When zippers are used in products such as bags and are located on the outermost layer, they need to be opened and closed repeatedly, so obvious signs of wear and tear will usually appear after a period of use. If used for a long time, the wear and tear will be aggravated, reducing the stability of the zipper, making it difficult to ensure safety. Utility Model Content
[0004] The utility model aims to provide an expandable double-isolation layer zipper structure to at least solve one of the above technical problems.
[0005] In order to achieve the above utility model purpose, the technical solution adopted by the utility model is as follows:
[0006] An expandable double-isolation layer zipper structure, comprising:
[0007] a first tape set and a second tape set; and
[0008] pull head;
[0009] The first fabric tape set includes a first single fabric tape and a second single fabric tape which are sewn together;
[0010] The second fabric tape set includes a third single fabric tape and a fourth single fabric tape which are separately arranged;
[0011] The first and second chain tooth rows having the same extension direction are respectively provided on the same side of the first single cloth tape and the second single cloth tape, and the third and fourth chain tooth rows are provided at corresponding positions of the third and fourth single cloth tape;
[0012] The slider is configured as a double-layer slider, which is slidably connected to the first chain tooth row, the second chain tooth row, the third chain tooth row and the fourth chain tooth row, and is used to make the first chain tooth row and the third chain tooth row engage and separate with each other, and at the same time make the second chain tooth row and the fourth chain tooth row engage and separate with each other.
[0013] Through such an arrangement, the first single cloth tape and the third single cloth tape form an isolation layer, which is defined as the first isolation layer, and the second single cloth tape and the fourth single cloth tape form another isolation layer, which is defined as the second isolation layer. By pulling the slider, the two isolation layers can be opened or closed at the same time. When the zipper structure of the utility model is applied to the outermost layer of products such as luggage, the protective effect is better due to the double isolation layer, and the influence of wear is reduced. Even if the first isolation layer is worn out, there is still the second isolation layer, and because the third single cloth tape and the fourth single cloth tape are separately arranged, when the third single cloth tape of the first isolation layer is worn out, it can be removed from the luggage and other products and replaced with a new single cloth tape, thereby increasing the service life of the zipper structure.
[0014] Preferably, it also includes a fifth single cloth tape, a sixth chain tooth row is provided at one end of the first single cloth tape away from the second cloth tape group, a fifth chain tooth row is provided on the fifth single cloth tape, and the fifth chain tooth row and the sixth chain tooth row can engage with or separate from each other.
[0015] Preferably, there are two pullers between the first cloth tape group and the second cloth tape group, namely a first puller and a second puller;
[0016] When the first slider and the second slider are pulled toward opposite directions along the first tooth row and the third tooth row, the first tooth row and the third tooth row are engaged with each other, and the second tooth row and the fourth tooth row are engaged with each other;
[0017] When the first slider and the second slider are pulled along the first element row and the third element row toward opposite directions, the first element row and the third element row are disengaged from each other, and the second element row and the fourth element row are disengaged from each other.
[0018] Preferably, the fifth single cloth tape is an elastic expansion cloth tape.
[0019] Preferably, the extension direction of the sixth chain tooth row is the same as the extension direction of the first chain tooth row.
[0020] Preferably, the first slider and the second slider have the same structure, including a pull ring and a body, the body including a pull nose, and the pull ring is sleeved on the pull nose;
[0021] The main body also includes an upper wing plate and a lower wing plate, the pull nose is fixedly connected to the upper wing plate, the upper wing plate is located at the top of the first chain tooth row and the third chain tooth row, and the lower wing plate is located at the bottom of the second chain tooth row and the fourth chain tooth row.
[0022] Preferably, the main body also includes a middle wing plate, which is located between the upper wing plate and the lower wing plate, and the three are arranged in parallel. The middle wing plate is located at the bottom of the first chain tooth row and the third chain tooth row, and at the top of the second chain tooth row and the fourth chain tooth row.
[0023] More preferably, the main body also includes a guide column, and the upper wing plate, the middle wing plate and the lower wing plate are respectively fixedly connected to the guide column, and the guide column is located between the first chain tooth row and the third chain tooth row, and also between the second chain tooth row and the fourth chain tooth row, and is used to disengage the first chain tooth row and the third chain tooth row from each other, and to disengage the second chain tooth row and the fourth chain tooth row from each other.
[0024] Preferably, the pull nose is also provided with an integrally formed sink and a lock ring;
[0025] When the first slider and the second slider abut against each other in facing directions, the sunken groove of the first slider abuts against the locking ring of the second slider, and at the same time, the locking ring of the first slider abuts against the sunken groove of the second slider.
[0026] Preferably, both the upper wing plate and the middle wing plate are provided with side wing plates, and the side wing plate arranged on the upper wing plate is defined as the first side wing plate, and the side wing plate arranged on the middle wing plate is defined as the second side wing plate, the first side wing plate is used to make the first chain tooth row and the third chain tooth row bite each other, and the second side wing plate is used to make the second chain tooth row and the fourth chain tooth row bite each other.
[0027] Beneficial effects:
[0028] The utility model discloses an expandable double-isolation layer zipper structure, comprising a first cloth tape group, a second single cloth tape and a pull head, the first cloth tape group comprises a first single cloth tape and a second single cloth tape which are sewed and connected, the second cloth tape group comprises a third single cloth tape and a fourth single cloth tape which are separately arranged, the same sides of the first single cloth tape and the second single cloth tape are respectively provided with a first chain tooth row and a second chain tooth row with the same extending direction, the corresponding positions of the third single cloth tape and the fourth single cloth tape are provided with a third chain tooth row and a fourth chain tooth row, the first chain tooth row and the third chain tooth row can be engaged with and disengaged from each other, the second chain tooth row and the fourth chain tooth row can be engaged with and disengaged from each other, the pull head is configured as a double-layer pull head, slidably connected to the first chain tooth row, the second chain tooth row, the third chain tooth row and the fourth chain tooth row, and is used to make the first chain tooth row and the third chain tooth row engage with and disengage from each other Separation, while making the second chain tooth row and the fourth chain tooth row engage and separate with each other. In this way, the first single cloth tape and the third single cloth tape form an isolation layer, which is defined as the first isolation layer, and the second single cloth tape and the fourth single cloth tape form another isolation layer, which is defined as the second isolation layer. By pulling the slider, the two isolation layers can be opened or closed at the same time. When the zipper structure of the utility model is applied to the outermost layer of products such as luggage, the protective effect is better due to the double isolation layer, and the influence of wear is reduced. Even if the first isolation layer is worn out, there is still the second isolation layer, and because the third single cloth tape and the fourth single cloth tape are separately arranged, when the third single cloth tape of the first isolation layer is worn out, it can be removed from products such as luggage and replaced with a new single cloth tape, thereby increasing the service life of the zipper structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] Figure 1 This is a three-dimensional structural diagram of an expandable double-isolation layer zipper structure according to an embodiment of the utility model;
[0030] Figure 2 The expandable double isolation layer zipper structure of the utility model is different from Figure 1 Direction stereogram;
[0031] Figure 3 This is an exploded three-dimensional structural diagram of an expandable double-isolation layer zipper structure according to an embodiment of the utility model;
[0032] Figure 4 is a three-dimensional structural diagram of the first slider of this embodiment;
[0033] Figure 5 This is a three-dimensional structural diagram of the first slider and the second slider in the abutment state of this embodiment;
[0034] Figure 6 for Figure 1 Cross-section view at inner AA.
[0035] Reference numerals
[0036] 1-first cloth tape group; 11-first single cloth tape; 111-first chain tooth row; 112-sixth chain tooth row; 12-second single cloth tape; 121-second chain tooth row; 13-sewing tape; 2-second cloth tape group; 21-third single cloth tape; 211-third chain tooth row; 22-fourth single cloth tape; 221-fourth chain tooth row; 3-fifth single cloth tape; 31-fifth chain tooth row; 4-first slider; 41-pull ring; 42-body; 421-upper wing plate; 422-lower wing plate; 423-middle wing plate; 424-pull nose; 425-guide column; 426-locking ring; 427-sink; 428-first side wing plate; 429-second side wing plate; 5-second slider; 6-third slider. DETAILED DESCRIPTION
[0037] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.
[0038] The technical solution of the utility model is described in detail below with specific embodiments.
[0039] Please also read Figure 1 and Figure 2 The utility model discloses an expandable double-isolation layer zipper structure, including a first cloth tape group 1, a second single cloth tape 12 and a slider, wherein the first cloth tape group 1 includes a first single cloth tape 11 and a second single cloth tape 12 connected by sewing, and the second cloth tape group 2 includes a third single cloth tape 21 and a fourth single cloth tape 22 which are separately arranged, and the first single cloth tape 11 and the second single cloth tape 12 are respectively provided with a first chain tooth row 111 and a second chain tooth row 121 which extend in the same direction on the same side, and the corresponding positions of the third single cloth tape 21 and the fourth single cloth tape 22 A third chain tooth row 211 and a fourth chain tooth row 221 are provided, the first chain tooth row 111 and the third chain tooth row 211 can engage with and disengage from each other, the second chain tooth row 121 and the fourth chain tooth row 221 can engage with and disengage from each other, the slider is configured as a double-layer slider, slidably connected to the first chain tooth row 111, the second chain tooth row 121, the third chain tooth row 211 and the fourth chain tooth row 221, and is used to make the first chain tooth row 111 and the third chain tooth row 211 engage with and disengage from each other, and at the same time make the second chain tooth row 121 and the fourth chain tooth row 221 engage with and disengage from each other.
[0040] In this way, the first single cloth tape 11 and the third single cloth tape 21 form an isolation layer, which is defined as the first isolation layer, and the second single cloth tape 12 and the fourth single cloth tape 22 form another isolation layer, which is defined as the second isolation layer. By pulling the slider, the two isolation layers can be opened or closed at the same time. When the zipper structure of the utility model is applied to the outermost layer of products such as luggage, the protective effect is better due to the double isolation layer, and the influence of wear is reduced. Even if the first isolation layer is worn out, there is still the second isolation layer. Moreover, since the third single cloth tape 21 and the fourth single cloth tape 22 are separately arranged, when the third single cloth tape 21 of the first isolation layer is worn out, it can be removed from the products such as luggage and replaced with a new single cloth tape, thereby increasing the service life of the zipper structure.
[0041] Specifically, the double-isolation layer zipper structure of the present embodiment also includes a fifth single cloth tape 3, and a sixth chain tooth row 112 is provided at the end of the first single cloth tape 11 away from the second cloth tape group 2. The extension direction of the sixth chain tooth row 112 is the same as the extension direction of the first chain tooth row 111. The fifth single cloth tape 3 is provided with a fifth chain tooth row 31, and the fifth chain tooth row 31 and the sixth chain tooth row 112 can be engaged with or separated from each other. Pull heads are slidably provided on the fifth chain tooth row 31 and the sixth chain tooth row 112, and the pull heads can engage with or separate the fifth chain tooth row 31 and the sixth chain tooth row 112.
[0042] It can be understood that the fifth single cloth tape 3 in the present embodiment is configured as a retractable and expandable cloth tape, which has a certain elasticity and a good deformation effect. When the expandable double-isolation layer zipper structure of the present embodiment is applied to luggage, even if there are too many objects in the luggage, which have a pushing force on the zipper, the fifth single cloth tape 3 can also be elastically extended to alleviate the pushing force, and cooperate with the fifth chain tooth row 31 and the sixth chain tooth row 112 to reduce the risk of the zipper bursting.
[0043] Preferably, see Figure 2 and Figure 3 A sewing tape 13 is provided between the first single cloth tape 11 and the second single cloth tape 12. It can be understood that the sewing tape 13 is a tape formed by sewing the first single cloth tape 11 and the second single cloth tape 12 together with a stitching thread. The sewing tape 13 is essentially a sewing tape formed by a stitching thread. The sewing tape 13 is used to fix the first single cloth tape 11 and the second single cloth tape 12 to ensure the stability of the connection and the aesthetics at the same time.
[0044] Furthermore, there are two sliders between the first cloth tape group 1 and the second cloth tape group 2, namely, the first slider 4 and the second slider 5. When the first slider 4 and the second slider 5 are pulled in opposite directions along the first chain tooth row 111 and the third chain tooth row 211, the first chain tooth row 111 and the third chain tooth row 211 are engaged with each other, and the second chain tooth row 121 and the fourth chain tooth row 221 are engaged with each other. When the first slider 4 and the second slider 5 are pulled in opposite directions along the first chain tooth row 111 and the third chain tooth row 211, the first chain tooth row 111 and the third chain tooth row 211 are disengaged from each other, and the second chain tooth row 121 and the fourth chain tooth row 221 are disengaged from each other. With such a configuration, when the zipper of this embodiment is applied to bags, compared with a single slider, two sliders with opposite locking directions can engage and disengage the chain more conveniently and quickly, thereby improving the operating efficiency, and the movement amplitude does not need to be too large, and both hands can be pulled synchronously, which reduces the labor intensity compared with single-handed operation.
[0045] Furthermore, the first slider 4 and the second slider 5 have the same structure. Figure 4 As shown, taking the first slider 4 as an example, it includes a pull ring 41 and a body 42. It can be understood that the slider slidingly arranged on the fifth chain tooth row 31 and the sixth chain tooth row 112 is defined as the third slider 6. For the purpose of distinction, the pull ring of the third slider 6 is different from the first slider 4 and the second slider 5, and the body of the third slider 6 is a single layer, and the structure is relatively conventional, which will not be further elaborated here. Specifically, the body 42 includes a pull nose 424, and the pull ring 41 is sleeved on the pull nose 424; the body 42 also includes an upper wing plate 421 and a lower wing plate 422, the pull nose 424 is fixedly connected to the upper wing plate 421, the upper wing plate 421 is located at the top of the first chain tooth row 111 and the third chain tooth row 211, and the lower wing plate 422 is located at the bottom of the second chain tooth row 121 and the fourth chain tooth row 221; it also includes a middle wing plate 423, the middle wing plate 423 is located between the upper wing plate 421 and the lower wing plate 422, the three are arranged in parallel, and the middle wing plate 423 is located at the first chain tooth row 111 1 and the bottom of the third tooth row 211, and located at the top of the second tooth row 121 and the fourth tooth row 221, and also includes a guide column 425, the upper wing plate 421, the middle wing plate 423 and the lower wing plate 422 are respectively fixedly connected to the guide column 425, the guide column 425 is located between the first tooth row 111 and the third tooth row 211, and also between the second tooth row 121 and the fourth tooth row 221, and is used to disengage the first tooth row 111 and the third tooth row 211 from each other, and to disengage the second tooth row 121 and the fourth tooth row 221 from each other. The pull nose 424 is also provided with an integrally formed sink 427 and a lock ring 426, such as Figure 5As shown, when the first slider 4 and the second slider 5 are abutted toward opposite directions, the countersunk groove 427 of the first slider 4 abuts against the locking ring 426 of the second slider 5, and at the same time, the locking ring 426 of the first slider 4 abuts against the countersunk groove 427 of the second slider 5. A lock can be passed through the locking rings 426 of the first slider 4 and the second slider 5 to lock the two together, so that the two cannot be pulled in opposite directions, thereby enhancing the safety of the luggage.
[0046] It can be understood that side wing plates are provided on the upper wing plate 421 and the middle wing plate 423. The side wing plate provided on the upper wing plate 421 is defined as the first side wing plate 428, and the side wing plate provided on the middle wing plate 423 is defined as the second side wing plate 429. The first side wing plate 428 is used to make the first chain tooth row 111 and the third chain tooth row 211 interlock with each other, and the second side wing plate 429 is used to make the second chain tooth row 121 and the fourth chain tooth row 221 interlock with each other.
[0047] Further, the side of the first single cloth tape 11 away from the second single cloth tape 12 is defined as the front side, and the side facing the second single cloth tape 12 is defined as the back side. Figure 1 The axial perspective is the front view. Figure 2 The axial perspective is the reverse side, and the pull noses 424 of the first slider 4, the second slider 5 and the third slider 6 face the front side. Figure 6 As shown, the first element row 111, the second element row 121, the third element row 211 and the fourth element row 221 face the front side, and the fifth element row 31 and the sixth element row 112 face the back side.
[0048] With such arrangement, when the first slider 4 and the second slider 5 are locked by the lock through the locking ring 426, only the third slider 6 can be pulled open. However, the part revealed after being pulled open is not the storage space in the bag, but the second single cloth strap 12. Such arrangement has a misleading effect, which can further enhance the safety of the bag and play an anti-theft role.
[0049] In summary, an expandable double-isolation layer zipper structure includes a first tape group 1, a second single tape 12 and a slider, wherein the first tape group 1 includes a first single tape 11 and a second single tape 12 that are sewn together, and the second tape group 2 includes a third single tape 21 and a fourth single tape 22 that are separately arranged, and the first single tape 11 and the second single tape 12 are respectively provided with a first chain tooth row 111 and a second chain tooth row 121 with the same extension direction on the same side, and the third single tape 21 and the fourth single tape 22 are opposite to each other. The third chain tooth row 211 and the fourth chain tooth row 221 are provided at the corresponding position, the first chain tooth row 111 and the third chain tooth row 211 can be engaged with and disengaged from each other, the second chain tooth row 121 and the fourth chain tooth row 221 can be engaged with and disengaged from each other, and the pull head is configured as a double-layer pull head, which is slidably connected to the first chain tooth row 111, the second chain tooth row 121, the third chain tooth row 211 and the fourth chain tooth row 221, and is used to make the first chain tooth row 111 and the third chain tooth row 211 engage with and disengage from each other, and at the same time make the second chain tooth row 121 and the fourth chain tooth row 221 engage with and disengage from each other. The teeth 221 are engaged and separated with each other. In this way, the first single cloth tape 11 and the third single cloth tape 21 form an isolation layer, which is defined as the first isolation layer. The second single cloth tape 12 and the fourth single cloth tape 22 form another isolation layer, which is defined as the second isolation layer. By pulling the slider, the two isolation layers can be opened or closed at the same time. When the zipper structure of the utility model is applied to the outermost layer of products such as bags, the protective effect is better due to the double isolation layer, and the influence of wear is reduced. Even if the first isolation layer is worn, Even if the third single cloth tape 21 and the fourth single cloth tape 22 are separately arranged, when the third single cloth tape 21 of the first isolation layer is worn out, it can be removed from the product such as luggage and replaced with a new single cloth tape, thereby increasing the service life of the zipper structure; in addition, when the slider between the first cloth tape group 1 and the second cloth tape group 2 is locked relative to the luggage, the third slider 6 can be pulled, but what is revealed after being pulled open is the second single cloth tape 12, which has a misleading effect and can further enhance the safety of the luggage.
[0050] The above is a detailed description of an embodiment of an expandable double-isolation layer zipper structure provided by the utility model. This article uses specific examples to illustrate the principle and implementation of the utility model. The description of the above embodiment is only used to help understand the core idea of the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.
Claims
1. An expandable double-isolation layer zipper structure, characterized in that: include: A first cloth belt group (1) and a second cloth belt group (2); as well as pull head; The first fabric tape set (1) comprises a first single fabric tape (11) and a second single fabric tape (12) which are sewn together; The second cloth belt group (2) comprises a third single cloth belt (21) and a fourth single cloth belt (22) which are separately arranged; A first chain tooth row (111) and a second chain tooth row (121) having the same extension direction are respectively provided on the same side of the first single cloth tape (11) and the second single cloth tape (12), and a third chain tooth row (211) and a fourth chain tooth row (221) are provided at corresponding positions of the third single cloth tape (21) and the fourth single cloth tape (22); The slider is configured as a double-layer slider, which is slidably connected to the first chain tooth row (111), the second chain tooth row (121), the third chain tooth row (211) and the fourth chain tooth row (221), and is used to make the first chain tooth row (111) and the third chain tooth row (211) engage with and separate from each other, and at the same time make the second chain tooth row (121) and the fourth chain tooth row (221) engage with and separate from each other.
2. The expandable double-isolation layer zipper structure according to claim 1, characterized in that: It also comprises a fifth single cloth tape (3), wherein a sixth chain tooth row (112) is provided at one end of the first single cloth tape (11) away from the second cloth tape group (2), and a fifth chain tooth row (31) is provided on the fifth single cloth tape (3), and the fifth chain tooth row (31) and the sixth chain tooth row (112) can engage with or separate from each other.
3. The expandable double-isolation layer zipper structure according to claim 1, characterized in that: There are two pullers between the first cloth tape group (1) and the second cloth tape group (2), namely a first puller (4) and a second puller (5); When the first slider (4) and the second slider (5) are pulled in opposite directions along the first chain tooth row (111) and the third chain tooth row (211), the first chain tooth row (111) and the third chain tooth row (211) are engaged with each other, and the second chain tooth row (121) and the fourth chain tooth row (221) are engaged with each other; When the first slider (4) and the second slider (5) are pulled in opposite directions along the first chain tooth row (111) and the third chain tooth row (211), the first chain tooth row (111) and the third chain tooth row (211) are disengaged from each other, and the second chain tooth row (121) and the fourth chain tooth row (221) are disengaged from each other.
4. The expandable double-isolation layer zipper structure according to claim 2, characterized in that: The fifth single cloth belt (3) is an elastic expansion cloth belt.
5. The expandable double-isolation layer zipper structure according to claim 2, characterized in that: The extension direction of the sixth coupling tooth row (112) is the same as the extension direction of the first coupling tooth row (111).
6. The expandable double-isolation layer zipper structure according to claim 3, characterized in that: The first slider (4) and the second slider (5) have the same structure, comprising a pull ring (41) and a body (42), wherein the body (42) comprises a pull nose (424), and the pull ring (41) is sleeved on the pull nose (424); The main body (42) also includes an upper wing plate (421) and a lower wing plate (422), the pull nose (424) is fixedly connected to the upper wing plate (421), the upper wing plate (421) is located at the top of the first chain tooth row (111) and the third chain tooth row (211), and the lower wing plate (422) is located at the bottom of the second chain tooth row (121) and the fourth chain tooth row (221).
7. The expandable double-isolation layer zipper structure according to claim 6, characterized in that: The main body (42) also includes a middle wing plate (423), which is located between the upper wing plate (421) and the lower wing plate (422), and the three are arranged in parallel. The middle wing plate (423) is located at the bottom of the first chain tooth row (111) and the third chain tooth row (211), and is located at the top of the second chain tooth row (121) and the fourth chain tooth row (221).
8. The expandable double-isolation layer zipper structure according to claim 7, characterized in that: The main body (42) also includes a guide column (425), and the upper wing plate (421), the middle wing plate (423) and the lower wing plate (422) are respectively fixedly connected to the guide column (425). When the main body (42) is sliding, the guide column (425) is located between the first chain tooth row (111) and the third chain tooth row (211), and is also located between the second chain tooth row (121) and the fourth chain tooth row (221), so as to disengage the first chain tooth row (111) and the third chain tooth row (211), and to disengage the second chain tooth row (121) and the fourth chain tooth row (221).
9. The expandable double-isolation layer zipper structure according to claim 6, characterized in that: The pull nose (424) is also provided with an integrally formed sink groove (427) and a lock ring (426); When the first slider (4) and the second slider (5) are in contact with each other in opposite directions, the recessed groove (427) of the first slider (4) is in contact with the locking ring (426) of the second slider (5), and at the same time, the locking ring (426) of the first slider (4) is in contact with the recessed groove (427) of the second slider (5).
10. The expandable double-isolation layer zipper structure according to claim 7, characterized in that: The upper wing plate (421) and the middle wing plate (423) are both provided with side wing plates, and the side wing plate provided on the upper wing plate (421) is defined as a first side wing plate (428), and the side wing plate provided on the middle wing plate (423) is defined as a second side wing plate (429). The first side wing plate (428) is used to make the first chain tooth row (111) and the third chain tooth row (211) interlock with each other, and the second side wing plate (429) is used to make the second chain tooth row (121) and the fourth chain tooth row (221) interlock with each other.