Slide fastener

Abstract

To provide a slide fastener capable of preventing idling when closing the slide fastener. [Solution] The first slide fastener member includes a first cloth tape (10), a first element row, a slider, and a box pin member (40), the box pin member including a box pin main body portion and a box pin arm portion; the second slide fastener member includes a second cloth tape (50), a second element row, and an insert pin member (70), the insert pin member including a insert pin main body portion, an insert pin arm portion, and a half element; when the box pin member and the insert pin member are engaged, a slider accommodating area is formed by the box pin main body portion, the box pin arm portion, and the insert pin arm portion; an inclined protrusion is provided on the side of the box pin arm portion facing the slider accommodating area; the inclined protrusion abuts against the outer periphery of the slider, inclining the slider toward the insert pin member; and in the process of pulling the slider out of the slider accommodating area, the slider is switched from a state inclined toward the insert pin member to a state that is not inclined.

Description

Technical Field

[0001] The present invention relates to a slide fastener.

Background Art

[0002] A slide fastener is a connecting member that realizes the combination or separation of articles by continuously arranged elements, and is widely used in articles such as clothing, bags, tents, etc. Usually, a slide fastener includes a pair of left and right cloth tapes, an element row fixed to the inner edge of each cloth tape, and a slider that meshes with the element row. The element row includes a plurality of elements arranged front and back along the length direction of the slide fastener. By pulling the slider forward or backward along the length direction of the slide fastener to mesh or separate a pair of element rows, the slide fastener is opened and closed.

[0003] In some conventional slide fasteners, a separating insert is installed at one end of the element row. The separating insert mainly includes a fitting body continuously formed at the end of one element row of a pair of left and right cloth tapes, and a pivot support body continuously formed at the end of the other element row of the pair of cloth tapes. The fitting body is inserted and locked from the side of the pivot support body along the width direction of the slide fastener, but does not pass through the element guide passage of the slider along the length direction of the slide fastener, whereby a pair of left and right element rows mesh. Take the slide fastener disclosed in Chinese Patent Application No. 200980147733.5 as an example. Therefore, the slider and the pivot support body are attached to the same cloth tape, and the fitting body is attached to the other cloth tape.

[0004] Furthermore, in a slide fastener with a separation insert, the insert and the pivot are rotationally engaged. To open the slide fastener, pull the slider to the end of the row of elements and bring it into contact with the pivot, rotate the insert and the pivot away from each other to disengage them, and the slide fastener can be opened. To close the slide fastener, rotate the insert and the pivot towards each other until they engage, and pull the slider away from the pivot to close the slide fastener.

[0005] However, slide fasteners equipped with the aforementioned separation insert have a problem in actual use: they can slip. Specifically, when the slide fastener is used in clothing, when the user pulls the slider to close the slide fastener, if the user pulls the slider along the disengagement direction, the pivot rotates away from the insert. Since this direction of rotation is the same as the direction of rotation when disengaged, the engaged insert and pivot separate again, making it highly likely that slippage (i.e., invalid rotation of the insert and / or pivot) will occur. The slider will be pulled along only one row of elements where the separation insert is located in a separated state, the operation of closing the slide fastener will fail, and the user experience of the slide fastener will be degraded. [Prior art documents] [Patent Documents]

[0006] [Patent Document 1] Chinese Patent Application Publication No. 102227179 Specification [Overview of the project] [Problems that the invention aims to solve]

[0007] In view of the above-mentioned drawbacks of the conventional technology, the present invention aims to provide a slide fastener that can avoid slippage when closing the slide fastener. [Means for solving the problem]

[0008] To achieve the above objective, the slide fastener according to the present invention includes a separable first slide fastener member and a second slide fastener member. The first slide fastener member includes a first cloth tape, a first row of elements fixedly installed on the inner edge of the first cloth tape, a slider movably attached to the first row of elements along the length of the slide fastener, and a box bar member fixedly installed on the inner edge of the first cloth tape and distributed at the end of the first row of elements, the slider includes an upper wing plate and a lower wing plate that are installed opposite to each other along the thickness direction of the slide fastener and connected, the upper wing plate and the lower wing plate each have an upper flange portion and a lower flange portion that project opposite to each other, the box bar member includes a box bar body portion and a box bar arm portion that extends from the box bar body portion toward the first row of elements, The second slide fastener member includes a second cloth tape, a second row of elements fixedly installed on the inner edge of the second cloth tape, and a butterfly rod member fixedly installed on the inner edge of the second cloth tape and distributed at the end of the second row of elements, wherein the butterfly rod member includes a butterfly rod body, a butterfly rod arm extending from the butterfly rod body toward the second row of elements, and a half-element fixed to the butterfly rod body and adjacent to the second row of elements. The box bar member and the butterfly bar member are rotatably engaged and separable, and when the box bar member and the butterfly bar member are engaged, a slider housing area capable of housing the slider is formed, surrounded by the box bar body, the box bar arm, and the butterfly bar arm. On the side surface of the box bar arm portion facing the slider housing area, an inclined projection is provided that protrudes toward the slider housing area, and a flange passage is formed between the half element and the butterfly bar arm portion. The flange passage is part of the slider housing area and is for the passage of the upper flange portion and the lower flange portion of the slider on one side adjacent to the butterfly bar arm portion. When the box bar member and the butterfly bar member engage, and the slider is positioned in the slider housing area and in contact with the box bar body, the inclined projection comes into contact with the outer circumference of the slider, causing the slider to tilt toward the butterfly bar member.

[0009] In the above-described slide fastener, to close the slide fastener, first the slider is pulled to the end of the first row of elements in the first slide fastener member, causing the slider to come into contact with the box bar member. Next, when the butterfly bar member of the second slide fastener member and the box bar member of the first slide fastener member are engaged, the butterfly bar member and the box bar member rotate toward each other until they are engaged. At this time, a slider housing area is formed, surrounded by the box bar body, box bar arm, and butterfly bar arm, and the slider is positioned precisely in this slider housing area. The box bar arm and butterfly bar arm are distributed on both sides of the slider along the width direction of the slide fastener, and the inclined protrusions of the box bar arm come into contact with the outer circumference of the slider, causing the slider to tilt toward the butterfly bar member. The user then pulls the slider, moving it away from the butterfly bar member and the box bar member along the length of the slide fastener, that is, pulling the slider out of the slider housing area and engaging the first row of elements with the second row of elements, so that the slider, engaged with the first row of elements and the second row of elements, returns to a straight and uninclined state. Thus, in the process of pulling the slider out of the slider housing area, the upper and lower flange portions on one side of the slider that are close to the butterfly bar arm portion pass through the flange passage of the butterfly bar member, and the slider is switched from an inclined state toward the butterfly bar member to an uninclined state, and in this process the slider is driven so that the butterfly bar member rotates toward the box bar member, and the direction of rotation is the engagement direction. Even when the slider is pulled up in the disengagement direction, the engagement does not disengage, effectively preventing the butterfly bar member or box bar member from rotating freely in the disengagement direction. This ensures that the butterfly bar member and box bar member are securely engaged when closing the slide fastener, guaranteeing a high success rate in closing the slide fastener and improving the user experience of the slide fastener.

[0010] Furthermore, a recess is formed on the outer circumference of one end of the half element away from the second row of elements, recessed away from the flange passage, and the recess communicates with the flange passage, the box bar member and the butterfly bar member engage, the slider is positioned in the slider housing area and in contact with the box bar body, the upper flange portion and / or the lower flange portion and the recess are distributed front to back along the direction of movement of the slider when the slide fastener is closed, and the ends of the upper flange portion and / or the lower flange portion can contact the recess. In the process of pulling the slider out of the slider housing area, the upper flange portion and the lower flange portion of the slider may collide with the half element. When the ends of the upper flange portion and the lower flange portion collide with the half element, the ends of the upper flange portion and / or the lower flange portion contact the recess of the half element, the outer contour of the recess recessed away from the flange passage surrounds the outer circumference of the ends of the upper flange portion and / or the lower flange portion, and the recess supports the ends of the upper flange portion and / or the lower flange portion. As a result, the rotation of the half element in the disengagement direction is restricted, achieving the objective of restricting the rotation of the butterfly bar member in the disengagement direction. On the other hand, when the upper flange portion and the lower flange portion pass the outer circumference of the half element, the half element rotates toward the box bar member, and as a result, the butterfly bar member rotates toward the box bar member. Therefore, the recess makes it difficult for the butterfly bar member to rotate in the disengagement direction, effectively preventing the butterfly bar member from spinning freely and further improving the reliability of the engagement between the butterfly bar member and the box bar member.

[0011] Furthermore, recesses are formed on the front and back surfaces of the half element, the recess on the front surface of the half element is capable of contacting the end of the upper flange portion, and the recess on the back surface of the half element is capable of contacting the end of the lower flange portion, thereby better restricting the free rotation of the butterfly bar member toward the disengagement side.

[0012] Furthermore, the outer contour of the recess includes a plurality of recessed slopes, which are sequentially connected along the length of the slide fastener, thereby the recess supports the ends of the upper flange and / or lower flange with a surface, and better restricts the rotation of the butterfly bar member in the disengagement direction.

[0013] Furthermore, the inclination angles of the multiple recessed slopes are all different, specifically, the inclination of the multiple recessed slopes with respect to the central axis extending in the longitudinal direction of the slide fastener gradually increases. In this way, when the ends of the upper and lower flange portions collide with the half element, the first recessed slope can accommodate the ends of the upper and / or lower flange portions so that the half element does not slip, and the remaining recessed slopes, due to the increasing inclination, are distributed to one side of the upper and / or lower flange portions along the direction of movement of the slider when closing the slide fastener. Thus, in order for the upper and / or lower flange portions to pass over the remaining recessed slopes from the outer circumference side of the half element, the user needs to apply a certain force to the slider. By applying this force, the butterfly bar member rotates toward the box bar member and can engage with the box bar member more effectively.

[0014] Preferably, there are three recessed slopes, each being a first, second, and third slope connected sequentially along the length of the slide fastener, and the first slope and the outer circumferential surface of the half element, and the third slope and the outer circumferential surface of the half element are both connected by arc segments.

[0015] Furthermore, when the box bar member and the butterfly bar member engage, and the slider is positioned in the slider housing area and in contact with the box bar body, the inclination angle α at which the inclined projection tilts the slider toward the butterfly bar member is 20° to 25°, and particularly preferably 22°. In this way, it is possible to avoid the slider tilting excessively toward the butterfly bar member when the engagement between the box bar member and the butterfly bar member begins, thereby preventing the butterfly bar member from moving too far away from the box bar member and ensuring better engagement between the butterfly bar member and the box bar member thereafter.

[0016] Furthermore, when the box bar member and the butterfly bar member engage, and the slider is positioned in the slider housing area and in contact with the box bar main body, a gap is formed between the portion of the box bar arm other than the inclined protrusion and the slider. This gap allows the slider to be easily pulled into the slider housing areas at the ends of the first and second element rows when opening the slide fastener, and allows the slider to be easily pulled out from the slider housing area when closing the slide fastener.

[0017] Furthermore, the box bar member further includes a first magnet fixed to the box bar body, and the butterfly bar member further includes a second magnet fixed to the butterfly bar body. The first magnet and the second magnet are capable of generating a magnetic attraction force that causes the box bar member and the butterfly bar member to rotate in opposition to each other, thereby facilitating rotational engagement between the box bar member and the butterfly bar member and improving the user experience.

[0018] Furthermore, reinforcing ribs are fixedly installed on one side of the upper wing plate that is close to the butterfly bar member, thereby improving the structural strength of the upper wing plate.

[0019] As described above, the slide fastener according to the present invention has the following beneficial effects. In the present application, in the process of pulling the slider out of the slider accommodation area, the upper flange portion and the lower flange portion on one side of the slider close to the butterfly bar arm portion pass through the flange passage of the butterfly bar member, and the slider is switched from a state inclined toward the butterfly bar member to a non-inclined state. In this process, the slider drives the butterfly bar member to rotate toward the box bar member, and the rotation direction is the engagement direction. Even if the slider is pulled up along the disengagement direction, the engagement is not released, and it effectively avoids the butterfly bar member or the box bar member from idling in the disengagement direction. When closing the slide fastener, the butterfly bar member and the box bar member are surely engaged, surely guaranteeing the success rate of the operation of closing the slide fastener and improving the user experience of the slide fastener.

Brief Description of the Drawings

[0020] [Figure 1] It is a schematic configuration diagram when the slide fastener according to the present application is closed. [Figure 2] It is a cross-sectional view taken along the line A-A of FIG. 1. [Figure 3] It is a front view showing the state of moving the slider in the length direction of the slide fastener into the slider accommodation area in FIG. 1. [Figure 4] It is a schematic configuration diagram when the slide fastener according to the present application is opened. [Figure 5] It is a front view showing the start state of assembly of the box bar member, the butterfly bar member, and the slider in FIG. 3. [Figure 6] It is a rear view of FIG. 5. [Figure 7] It is a schematic configuration diagram of the box bar member according to the present application from different perspectives. [Figure 8] It is a schematic configuration diagram of the box bar member according to the present application from different perspectives. [Figure 9] It is a schematic configuration diagram of the box bar member according to the present application from different perspectives. [Figure 10] It is a schematic configuration diagram of the slider according to the present application from different perspectives. [Figure 11] These are schematic diagrams of the slider relating to the present invention from different viewing angles. [Figure 12] These are schematic diagrams of the butterfly bar member relating to the present invention, viewed from different perspectives. [Figure 13] These are schematic diagrams of the butterfly bar member relating to the present invention, viewed from different perspectives. [Figure 14] These are schematic diagrams of the butterfly bar member relating to the present invention, viewed from different perspectives. [Figure 15] Figure 12 is a schematic diagram of the half-element portion. [Modes for carrying out the invention]

[0021] Embodiments of the present invention will be described below with reference to specific examples, and those skilled in the art will be able to easily understand other advantages and effects of the present invention from the information disclosed herein.

[0022] Furthermore, the structures, proportions, sizes, etc., depicted in the drawings herein are merely for the understanding and interpretation of those skilled in the art, in combination with the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance, and any modifications to the structure, changes in proportional relationships, or adjustments to sizes should all be within the scope covered by the technical content disclosed herein, as long as they do not affect the effects and achievable purposes achieved by the present invention. Similarly, terms such as "up," "down," "left," "right," "middle," and "one" used herein are merely for explanatory convenience and do not limit the scope within which the present invention can be implemented. As long as there is no substantial change in the technical content, any changes or adjustments in relative relationships are also considered to be within the scope within which the present invention can be implemented.

[0023] When an element is described as being "fixed" or "installed" to another element, it may be directly fixed or installed to the other element, or an intermediate element may be present simultaneously. When one element is described as being "connected" to another element, it may be directly connected to the other element, or it may be indirectly connected to the other element via an intermediate element.

[0024] Furthermore, the descriptions of "first," "second," etc., in this application are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of specified technical features. Thus, features limited as "first" or "second" may explicitly or implicitly include at least one such feature. Also, the technical means of each embodiment cannot be combined unless they can be realized by a person skilled in the art. If a combination of technical means is contradictory or unrealizable, such a combination of technical means should be considered nonexistent and not within the scope of protection of this application.

[0025] As shown in Figure 1, the present invention provides a slide fastener having a slider 30. For the sake of explanation, in the following embodiments, the length direction of the slide fastener is defined as the front-to-back direction, the width direction of the slide fastener as the left-to-right direction, and the thickness direction of the slide fastener as the up-to-down direction. Furthermore, the front direction is defined as the direction of movement of the slider 30 when the slide fastener is closed, and the rear direction is defined as the direction of movement of the slider 30 when the slide fastener is opened. Accordingly, in the diagram shown in Figure 1, the upper and lower sides of the paper are defined as the front direction and the rear direction, respectively, the left and right sides of the paper are defined as the left direction and the right direction, respectively, and the front and back surfaces of the paper are defined as the up direction and the down direction, respectively.

[0026] As shown in Figures 1 to 4, the slide fastener according to the present invention includes a separable first slide fastener member 100 and a second slide fastener member 200, wherein the first slide fastener member 100 is distributed on the left side and the second slide fastener member 200 is distributed on the right side.

[0027] As shown in Figures 3 and 4, the first slide fastener member 100 includes a first cloth tape 10, a first element row 20 fixedly installed on the right inner edge of the first cloth tape 10, a slider 30 attached to the first element row 20 so as to be movable back and forth along the length direction of the slide fastener, and a box bar member 40 fixedly installed on the right inner edge of the first cloth tape 10. The first element row 20 includes a plurality of elements arranged back and forth along the length direction of the slide fastener, and the box bar member 40 is distributed along the length direction of the first element row 20 at the end of the first element row 20, i.e., the rear end. As shown in Figures 10 and 11, the slider 30 is installed facing each other vertically along the thickness direction of the slide fastener and includes an upper wing plate 31 and a lower wing plate 32 connected together, a connecting column 36 connected between the upper wing plate 31 and the lower wing plate 32, a mounting column 37 fixed to the upper surface of the upper wing plate 31, and a pull handle 38 rotatably attached to the mounting column 37. The user can easily pull the slider 30 forward or backward by holding the pull handle 38 in their hand. At the same time, upper flange portions 33 projecting downward are provided on the left and right edges of the upper wing plate 31, and lower flange portions 34 projecting upward are provided on the left and right edges of the lower wing plate 32. Therefore, the upper flange portions 33 and the lower flange portions 34 project opposite each other in the vertical direction. An element guide passage 39 is formed between the upper wing plate 31, the lower wing plate 32, and the connecting column portion 36 of the slider 30, and the front end opening of the element guide passage 39 is the shoulder of the slider 30. The connecting column portion 36 is installed on the front end side of the upper wing plate 31 and the lower wing plate 32, and the element guide passage 39 penetrates in the left-right direction through the area distributed between the upper wing plate 31 and the lower wing plate 32 and on the rear side of the connecting column portion 36. That is, the rear side of the connecting column portion 36 becomes a hollow area where the box rod member 40 and the butterfly rod member 70, which will be described later, engage. As shown in Figures 7 to 9, the box bar member 40 includes a box bar body portion 41 and a box bar arm portion 42 extending forward from the left side of the box bar body portion 41 toward the first element row 20. The box bar arm portion 42 is distributed to the left side of the first element row 20 along the width direction of the slide fastener; in other words, the box bar arm portion 42 is positioned outward relative to the first element row 20.

[0028] As shown in Figures 3 and 4, the second slide fastener member 200 includes a second cloth tape 50, a second row of elements 60 fixedly installed on the left inner edge of the second cloth tape 50, and a butterfly bar member 70 fixedly installed on the left inner edge of the second cloth tape 50. The second row of elements 60 also includes a plurality of elements arranged front to back along the length direction of the slide fastener, and the butterfly bar member 70 is distributed along the length direction of the second row of elements 60 to the end of the second row of elements 60, i.e., the rear end. As shown in Figures 12 to 14, the butterfly bar member 70 includes a butterfly bar body portion 71, a butterfly bar arm portion 72 extending forward from the right side of the butterfly bar body portion 71 toward the second row of elements 60, and a half element 73 fixed to the butterfly bar body portion 71 and adjacent to the second row of elements 60. The butterfly bar arm portion 72 is distributed to the right of the second element row 60 along the width direction of the slide fastener; in other words, the butterfly bar arm portion 72 is installed on the outside of the second element row 60. The half element 73 is distributed at the front end of the butterfly bar member 70 and also at the rear of the last element in the second element row 60, and a flange passage 74 is formed between the half element 73 and the butterfly bar arm portion 72.

[0029] In the slide fastener described above, the box bar member 40 and the butterfly bar member 70 constitute a separation insert for the slide fastener, and the box bar member 40 and the butterfly bar member 70 are rotatably engaged and separable. When the slide fastener shown in Figure 1 is in the closed state, the elements in the first element row 20 and the elements in the second element row 60 mesh, and the box bar member 40 and the butterfly bar member 70 engage. At this time, a slider housing area 80 is formed surrounded by the box bar body portion 41, the box bar arm portion 42, and the butterfly bar arm portion 72. The slider housing area 80 can accommodate the slider 30, and the flange passage 74 of the butterfly bar member 70 is part of the slider housing area 80.

[0030] To open the slide fastener shown in Figure 1, the user holds the pull tab 38 in their hand and pulls the slider 30 backward until it contacts the box bar member 40, as shown in Figure 3. At this point, the slider 30 is located in the slider housing area 80, and during this process, the upper flange portion 33 and lower flange portion 34 on the right side of the slider 30 pass backward through the flange passage 74 of the butterfly bar member 70. Subsequently, the box bar member 40 and the butterfly bar member 70 are rotated away from each other, and the butterfly bar member 70 is moved out of the element guide passage 39 of the slider 30, thereby separating the box bar member 40 and the butterfly bar member 70 vertically, as shown in Figure 4, and separating the slide fastener into the first slide fastener member 100 and the second slide fastener member 200.

[0031] To close the slide fastener shown in Figure 4, first, the box bar member 40 and the butterfly bar member 70 are brought into contact vertically, and the slider 30 is pulled backward until it contacts the box bar member 40. Then, the box bar member 40 and the butterfly bar member 70 are rotated so that they move closer together until the left end of the butterfly bar member 70 enters the element guide passage 39 of the slider 30 from the right side of the slider 30. As a result, the box bar member 40 and the butterfly bar member 70 engage, and as shown in Figure 3, the slider 30 is positioned in the slider housing area 80 at this time. Subsequently, when the user holds the pull handle 38 and pulls the slider 30 forward, the slider 30 is pulled forward from the slider housing area 80, and the upper flange portion 33 and lower flange portion 34 on the right side of the slider 30 pass forward through the flange passage 74 of the butterfly bar member 70. As the slider 30 moves forward, the elements of the first element row 20 and the elements of the second element row 60 that have passed through the element guide passage 39 of the slider 30 engage, and as shown in Figure 1, the half elements 73 are distributed behind the last element of the first element row 20, and the half elements 73 and the first element row 20 engage.

[0032] Therefore, in the slide fastener described above, rightward rotation of the box bar member 40 and leftward rotation of the butterfly bar member 70 constitute the engagement direction, while leftward rotation of the box bar member 40 and rightward rotation of the butterfly bar member 70 constitute the disengagement direction.

[0033] In particular, as shown in Figures 7 and 9, an inclined projection 421 is provided on the right side of the box bar arm portion 42 facing the slider housing area 80, projecting to the right toward the slider housing area 80. When the box bar member 40 and the butterfly bar member 70 engage, and the slider 30 is positioned in the slider housing area 80 and in contact with the box bar body portion 41, as shown in Figures 3, 5 and 6, the inclined projection 421 abuts against the left outer circumference of the slider 30, and due to the abutment action of the inclined projection 421, the entire slider 30 tilts toward the butterfly bar member 70, that is, the slider 30 tilts to the right, and the shoulder of the slider 30 also tilts to the right. The tilting of the slider 30 to the right is as follows: As shown in Figure 3, the box bar member 40 has a first central axis S that extends along its length, and this first central axis S extends in the front-to-back direction and is the central axis that extends along the length direction of the slide fastener. The slider 30 has a second central axis W extending along its length, the second central axis W of the slider 30 is inclined to the right with respect to the first central axis S of the box bar member 40, the second central axis W and the first central axis S form an acute angle α, which is the angle of inclination at which the slider 30 is inclined to the right toward the butterfly bar member 70, and this structure has the following advantages.

[0034] To close the slide fastener, first pull the slider 30 to the end of the first row of elements 20 on the first slide fastener member 100, causing the slider 30 to come into contact with the box bar member 40. Then, the butterfly bar member 70 and the box bar member 40 rotate opposite each other, engaging with each other. As shown in Figures 3 and 5, at this time, the box bar arm portion 42 and the butterfly bar arm portion 72 are distributed to the left and right sides of the slider 30, respectively, the slider 30 is located exactly in the slider housing area 80, and the slider 30 is tilted to the right toward the butterfly bar member 70. After the user pulls the slider 30 forward using the pull handle 38 and pulls the slider 30 forward from the slider housing area 80, as shown in Figure 1, the first row of elements 20 and the second row of elements 60 that have passed through the slider 30 engage, and the slider 30, which is engaged with the first row of elements 20 and the second row of elements 60, returns to a straight and level state. That is, at this time, the second central axis W of the slider 30 is parallel to the first central axis S of the box bar member 40, and both extend straight in the front and back directions. Therefore, in the process of pulling the slider 30 forward from the slider housing area 80, the slider 30 switches from a state inclined toward the butterfly bar member 70 to a state that is not inclined, that is, the slider 30 rotates to the left toward the box bar member 40, and in this process, the upper flange portion 33 and lower flange portion 34 on the right side of the slider 30 pass through the flange passage 74 of the butterfly bar member 70. In addition, in this process, the slider 30 moves the butterfly bar member 70 to the left toward the box bar member 40, and the direction of rotation of the butterfly bar member 70 to the left is the engagement direction, thereby ensuring that the butterfly bar member 70 and the box bar member 40 engage securely. In this way, when closing the slide fastener, even if the slider 30 is pulled up in the disengagement direction, the engagement between the butterfly bar member 70 and the box bar member 40 is not released, effectively preventing the butterfly bar member 70 or the box bar member 40 from rotating freely in the disengagement direction, ensuring that the butterfly bar member 70 and the box bar member 40 are reliably engaged when closing the slide fastener, guaranteeing a high success rate in closing the slide fastener, and improving the user experience of the slide fastener.

[0035] Furthermore, as shown in Figures 3, 5, and 6, when the box bar member 40 and the butterfly bar member 70 engage, and the slider 30 is positioned in the slider housing area 80 and in contact with the box bar body 41, the inclination angle α at which the inclined projection 421 tilts the slider 30 toward the butterfly bar member 70 is 20° to 25°, and particularly preferably 22°. In this way, it is possible to avoid the slider 30 tilting excessively toward the butterfly bar member 70 when the engagement between the box bar member 40 and the butterfly bar member 70 begins, thereby preventing the butterfly bar member 70 from moving too far away from the box bar member 40 and better ensuring the subsequent engagement between the butterfly bar member 70 and the box bar member 40. Furthermore, as shown in Figure 7, the inclined projection 421 on the right side of the box bar arm portion 42 is triangular in shape. When it contacts the left outer surface of the slider 30, it tilts the slider 30 to the right and reduces the contact area between the inclined projection 421 and the slider 30, thereby reducing friction between them. This makes it easier to pull the slider 30 forward from the slider housing area 80 and to pull the slider 30 backward into the slider housing area 80.

[0036] Furthermore, as shown in Figures 3, 5, and 6, when the box bar member 40 and the butterfly bar member 70 engage, and the slider 30 is positioned in the slider housing area 80 and in contact with the box bar main body 41, a gap 43 is formed between the part of the box bar arm 42 other than the inclined projection 421 and the slider 30. This gap 43 penetrates vertically, and is formed on both the upper and lower sides of the inclined projection 421.

[0037] The gap 43 significantly reduces friction between the box bar arm portion 42 and the slider 30 by greatly decreasing the contact area between them. In this way, when opening the slide fastener, the slider 30 can be easily pulled into the slider housing area 80 at the rear end of the first element row 20 and the second element row 60, and when closing the slide fastener, the slider 30 can be easily pulled forward from the slider housing area 80.

[0038] Furthermore, as shown in Figures 12 to 15, a recess 731 is formed on the outer circumference of the right rear end of the half element 73, away from the second element row 60, and is recessed away from the flange passage 74. Since the recess 731 is formed on the outer circumference of the right rear end of the half element 73, it communicates with the flange passage 74. When the box bar member 40 and the butterfly bar member 70 engage, and the slider 30 is positioned in the slider housing area 80 and in contact with the box bar body 41, as shown in Figure 5, the upper flange portion 33 and / or lower flange portion 34 on the right side of the slider 30 and the recess 731 are distributed front to back along the direction of movement of the slider 30 when closing the slide fastener. That is, the upper flange portion 33 and / or lower flange portion 34 on the right side of the slider 30 are distributed behind the recess 731.

[0039] In the process of closing the slide fastener by pulling the slider 30 forward from the slider housing area 80, the upper flange portion 33 and lower flange portion 34 on the right side of the slider 30 may pass directly forward from the flange passage 74 on the outer circumference of the half element 73 without colliding with the half element 73, or the upper flange portion 33 and lower flange portion 34 on the right side of the slider 30 may collide with the half element 73 first and then pass forward from the flange passage 74. When the front ends of the upper flange portion 33 and lower flange portion 34 collide with the half element 73, the front ends of the upper flange portion 33 and / or lower flange portion 34 abut against the recess 731 at the right rear end of the half element 73, and the outer contour of the recess 731, which is recessed away from the flange passage 74, surrounds the outer circumference of the front ends of the upper flange portion 33 and / or lower flange portion 34, and the recess 731 supports the front ends of the upper flange portion 33 and / or lower flange portion 34. This structure serves the following purposes. The front ends of the upper flange portion 33 and / or the lower flange portion 34 abut against the recess 731 at the right rear end of the half element 73, thereby restricting the rotation of the half element 73 to the right in the disengagement direction, and achieving the objective of restricting the rotation of the butterfly bar member 70 to the right in the disengagement direction. On the other hand, when force is then applied to the slider 30 to allow the upper flange portion 33 and / or the lower flange portion 34 to pass from the outer circumference of the half element 73, the upper flange portion 33 and / or the lower flange portion 34 rotate the half element 73 to the left toward the box bar member 40, and further rotate the butterfly bar member 70 to the left toward the box bar member 40. Therefore, the recess 731 makes it difficult for the butterfly bar member 70 to rotate in the disengagement direction, effectively preventing the butterfly bar member 70 from spinning freely, and further improving the reliability of the engagement between the butterfly bar member 70 and the box bar member 40.

[0040] Furthermore, the recess 731 is formed in the half element 73 as follows: If the recess 731 is formed only on the surface (i.e., top surface) of the half element 73, the recess 731 supports only the front end of the upper flange portion 33 on the right side of the slider 30; if the recess 731 is formed only on the back surface (i.e., bottom surface) of the half element 73, the recess 731 supports only the front end of the lower flange portion 34 on the right side of the slider 30; or if the recess 731 is formed on both the surface and back surface of the half element 73, the two upper and lower recesses 731 support the front ends of the upper flange portion 33 and the lower flange portion 34 on the right side of the slider 30, respectively. In this embodiment, as shown in Figures 5, 6, and 12 to 14, recesses 731 are formed on the front and back surfaces of the half element 73. The recesses 731 on the front surface of the half element 73 abut against the front end of the upper flange portion 33 on the right side of the slider 30, and can support the front end of the upper flange portion 33. The recesses 731 on the back surface of the half element 73 abut against the front end of the lower flange portion 34 on the right side of the slider 30, and can support the front end of the lower flange portion 34. This better restricts the free rotation of the butterfly rod member 70 toward the disengagement side and better rotates the butterfly rod member 70 toward the engagement side.

[0041] Furthermore, as shown in Figure 15, the outer contour of the recess 731 includes a plurality of recessed slopes 75, which are sequentially connected from rear to front along the length of the slide fastener, thereby the recess 731 supports the front ends of the upper flange portion 33 and / or the lower flange portion 34 with a surface, and better restricts the rotation of the butterfly bar member 70 in the disengagement direction.

[0042] Furthermore, as shown in Figure 15, the inclination angles of the multiple recessed slopes 75 are all different, and specifically, the inclination of the multiple recessed slopes 75 with respect to the central axis extending in the longitudinal direction of the slide fastener (i.e., the first central axis S) gradually increases. In this embodiment, there are three recessed slopes 75, which are the first slope 751, the second slope 752, and the third slope 753, respectively, connected sequentially from rear to front along the longitudinal direction of the slide fastener. The first slope 751 and the outer circumferential surface of the half element 73, and the third slope 753 and the outer circumferential surface of the half element 73 are both connected by an arc segment 754. Thus, the angle between the first inclined surface 751 and the first central axis S < the angle between the second inclined surface 752 and the first central axis S < the angle between the third inclined surface 753 and the first central axis S, and the third inclined surface 753 has the steepest slope with respect to the first central axis S that extends in the front-rear direction. When the front ends of the upper flange portion 33 and the lower flange portion 34 collide with the half element 73, the first inclined surface 751, which is distributed on the rearmost side of the recess 731, accommodates the front ends of the upper flange portion 33 and the lower flange portion 34, and therefore the half element 73 does not rotate freely, and the butterfly bar member 70 also does not rotate freely. With respect to the remaining recessed slope 75, the increasing inclination causes the second slope 752 and the third slope 753 to be distributed in front of the upper flange portion 33 and the lower flange portion 34 along the direction of movement of the slider 30 when closing the slide fastener. Therefore, the user needs to apply a certain force to the slider 30 in order to pass the upper flange portion 33 and the lower flange portion 34 over the second slope 752 and the third slope 753 from the outer circumference side of the half element 73. By applying this force, the butterfly bar member 70 rotates toward the box bar member 40 and can engage with the box bar member 40 more effectively.

[0043] Furthermore, as shown in Figure 10, a reinforcing rib 35 is fixedly installed on the upper right side of the upper wing plate 31, adjacent to the butterfly bar member 70. The reinforcing rib 35 protrudes integrally upward from the upper front end of the upper wing plate 31, thereby improving the structural strength of the upper wing plate 31.

[0044] Furthermore, the box bar member 40 and the butterfly bar member 70 engage with each other. As shown in Figures 7 to 9 and Figures 12 to 14, an engaging recess 45 and an engaging column 77 are provided on the right side of the box bar member 40 and the right side of the butterfly bar member 70, respectively, and the engaging recess 45 is capable of accommodating the engaging column 77. Based on this, the engaging recess 45 may be formed on the right side of the box bar member 40 and the engaging column 77 on the left side of the butterfly bar member 70, or the engaging column 77 may be placed on the right side of the box bar member 40 and the engaging recess 45 may be formed on the left side of the butterfly bar member 70. Whether the engaging recess 45 is formed on the box bar member 40 or the butterfly bar member 70, an inclined projection 421 that tilts the slider 30 to the right is provided on the box bar member 40 which is distributed on the same side as the slider 30. In this embodiment, as shown in Figures 7 to 9 and Figures 12 to 14, an engaging recess 45 is formed in the box rod member 40, and an engaging column portion 77 is installed in the butterfly rod member 70. The following description will refer to this structure.

[0045] In the box bar member 40, as shown in Figures 7 to 9, the box bar member 40 further includes a box bar column portion 46 that extends forward integrally from the front end of the box bar main body portion 41, and an upper engaging arm 47 and a lower engaging arm 48 that both extend to the right from the right side of the box bar column portion 46. The box bar arm portion 42 is distributed to the left side of the box bar column portion 46, and a flange housing groove 49 is formed between them. The upper engaging arm 47 and the lower engaging arm 48 are distributed facing each other vertically, and an area opening to the right between the box bar column portion 46, the upper engaging arm 47, and the lower engaging arm 48 forms an engaging recess 45. The box bar member 40 is injection molded and fixed to the lower right end of the first cloth tape 10, and the box bar main body portion 41, the box bar arm portion 42, and the box bar column portion 46 are injection molded on the front and back surfaces of the first cloth tape 10, respectively. When the box bar member 40 and the butterfly bar member 70 engage, and the slider 30 is positioned in the slider housing area 80 and in contact with the box bar main body 41, as shown in Figures 5 and 6, the gap 43 formed between the part of the box bar arm 42 other than the inclined projection 421 and the slider 30 is the inner part of the flange housing groove 49, the upper flange 33 and lower flange 34 on the left side of the slider 30 are both positioned in the flange housing groove 49, the box bar column 46, the upper engaging arm 47 and the lower engaging arm 48 are all positioned in the element guide passage 39 of the slider 30, and the front end of the engaging recess 45 extends to the rear side of the connecting column 36 in the slider 30.

[0046] In the butterfly rod member 70, as shown in Figures 12 to 14, the engaging column portion 77 extends integrally forward from the front end of the butterfly rod body portion 71, and the front end of the engaging column portion 77 and the half element 73, and the right side of the engaging column portion 77 and the butterfly rod arm portion 72 are all connected by the butterfly rod transition portion 78. The butterfly rod member 70 is injection molded and fixed to the lower left end of the second cloth tape 50, and the butterfly rod body portion 71, butterfly rod arm portion 72, half element 73, engaging column portion 77, and butterfly rod transition portion 78 are injection molded on the front and back surfaces of the second cloth tape 50, respectively. When the box bar member 40 and the butterfly bar member 70 engage, and the slider 30 is positioned in the slider housing area 80 and in contact with the box bar body 41, as shown in Figures 5 and 6, the front end of the engaging column portion 77 extends to the rear side of the connecting column portion 36 on the slider 30, and the engaging column portion 77 is screwed left into the element guide passage 39 so as to rotate relative to the slider 30 and engages with the engaging recess 45.

[0047] Furthermore, the rotational engagement structure between the box bar member 40 and the butterfly bar member 70 is as follows. As shown in Figures 8 and 9, a rotating shaft portion 410 that protrudes rearward is provided on the rear end surface of the box bar body portion 41, and as shown in Figures 12 and 13, a rotating shaft hole 79 that opens forward is formed on the front side of the butterfly bar body portion 71, and the rotational engagement between the box bar member 40 and the butterfly bar member 70 is achieved by the rotational engagement between the rotating shaft portion 410 and the rotating shaft hole 79. Of course, in other embodiments, a rotating shaft hole 79 may be formed on the rear end surface of the box bar body portion 41, and a rotating shaft portion 410 that protrudes forward may be provided on the front side of the butterfly bar body portion 71, and the rotational engagement between the box bar member 40 and the butterfly bar member 70 may be achieved by the rotational engagement between the rotating shaft portion 410 and the rotating shaft hole 79.

[0048] Furthermore, the separation insert, which includes the box rod member 40 and the butterfly rod member 70, is a magnetic material. Specifically, as shown in Figure 2, the box rod member 40 further includes a first magnet 44 fixed to the box rod body 41, the first magnet 44 preferably fixed to the rotating shaft 410, and the butterfly rod member 70 further includes a second magnet 76 fixed to the butterfly rod body 71. The first magnet 44 and the second magnet 76 are capable of generating a magnetic attractive force that causes the box rod member 40 and the butterfly rod member 70 to rotate in opposition to each other. The magnetic attraction force generated between the first magnet 44 and the second magnet 76 causes the box bar member 40 and the butterfly bar member 70 to rotate more effectively in the engagement direction. This rotation allows the left side of the butterfly bar member 70 to be inserted more firmly into the slider 30, preventing the engagement between the box bar member 40 and the butterfly bar member 70 from being released and ensuring that free rotation is avoided. At the same time, it facilitates the rotational engagement of the box bar member 40 and the butterfly bar member 70, improving operability when closing the slide fastener and ultimately enhancing the user experience.

[0049] Furthermore, as shown in Figures 8 and 9, a position-restricting contact portion 411 that protrudes rearward is integrally installed on the rear surface of the box bar body portion 41. The position-restricting contact portion 411 is distributed in front of the rotating shaft portion 410, the front end of the position-restricting contact portion 411 is connected to the rear end of the lower engaging arm 48, and the left end of the position-restricting contact portion 411 is connected to the right side of the rear end of the box bar arm portion 42. The front surface of the position-restricting contact portion 411 is a contact slope 412, which constitutes a part of the outer periphery wall of the slider housing area 80. When the slider 30 is positioned in the slider housing area 80 and in contact with the box bar body portion 41, as shown in Figure 6, the rear end surface of the slider 30 comes into contact with the contact slope 412 of the position-regulating contact portion 411, and the two engage in surface contact. The position-regulating contact portion 411 plays a role in regulating the position of the slider 30 when it is pulled backward into the slider housing area 80. In particular, as shown in Figure 6, the inclination angle of the contact slope 412 with respect to the central axis extending in the width direction of the slide fastener is β. The inclination angle β of the contact slope 412 coincides with the inclination angle α at which the inclined projection 421 tilts the slider 30 toward the butterfly bar member 70, which better guides the slider 30 toward the butterfly bar member 70 when closing the slide fastener begins.

[0050] As described above, the present invention effectively overcomes various drawbacks of the prior art and has high industrial value.

[0051] The above embodiments are merely illustrative in illustrating the principles and effects of the present invention and do not limit the invention. Those skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the invention. Accordingly, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical idea disclosed herein should still be covered by the claims of the present invention. [Explanation of symbols]

[0052] 100 First slide fastener component 200 Second slide fastener component 10. First cloth tape 20 First element sequence 30 Sliders 31 Upper wing plate 32 Lower wing plate 33 Upper flange section 34 Lower flange section 35 Reinforcement Ribs 36 Connecting column section 37 Mounting column section 38 Pull handle 39 Element Guideway 40 Box-shaped rod members 41 Box rod main body 42 Box bar arm section 421 Inclined protrusion 43 gaps 44 The First Magnet 45 Engagement recess 46 Box rod section 47 Upper engagement arm 48 Lower engagement arm 49 Flange housing groove 410 Rotating shaft section 411 Position regulating contact part 412 Contact slope 50 Second cloth tape 60 Second element sequence 70 Butterfly rod component 71 Butterfly rod main body 72 Butterfly bar arm section 73 Half Element 731 recess 74 Flange passage 75. Concave slope 751 First slope 752 Second Slope 753 Third Slope 754 arc segments 76 The second magnet 77 Engagement pillar part 78 Butterfly rod transition section 79 Rotating shaft hole 80 Slider storage area

Claims

1. A slide fastener comprising a detachable first slide fastener member (100) and a second slide fastener member (200), The first slide fastener member (100) includes a first cloth tape (10), a first row of elements (20) fixedly installed on the inner edge of the first cloth tape (10), a slider (30) movably attached to the first row of elements (20) along the length direction of the slide fastener, and box bar members (40) fixedly installed on the inner edge of the first cloth tape (10) and distributed at the ends of the first row of elements (20). The slider (30) is installed facing each other along the thickness direction of the slide fastener and includes an upper wing plate (31) and a lower wing plate (32) which are connected, and the upper wing plate (31) and the lower wing plate (32) are each provided with an upper flange portion (33) and a lower flange portion (34) which project toward the opposite side, and the box bar member (40) includes a box bar body portion (41) and a box bar arm portion (42) which extends from the box bar body portion (41) toward the first element row (20), The second slide fastener member (200) includes a second cloth tape (50), a second row of elements (60) fixedly installed on the inner edge of the second cloth tape (50), and a butterfly rod member (70) fixedly installed on the inner edge of the second cloth tape (50) and distributed at the end of the second row of elements (60), wherein the butterfly rod member (70) includes a butterfly rod body portion (71), a butterfly rod arm portion (72) extending from the butterfly rod body portion (71) toward the second row of elements (60), and a half element (73) fixed to the butterfly rod body portion (71) and adjacent to the second row of elements (60), The box bar member (40) and the butterfly bar member (70) are rotatably engaged and separable, and when the box bar member (40) and the butterfly bar member (70) are engaged, a slider housing area (80) capable of housing the slider (30) is formed, surrounded by the box bar body portion (41), the box bar arm portion (42), and the butterfly bar arm portion (72). An inclined projection (421) is provided on the side surface of the box bar arm portion (42) facing the slider housing area (80), projecting toward the slider housing area (80), and a flange passage (74) is formed between the half element (73) and the butterfly bar arm portion (72). The flange passage (74) is part of the slider housing area (80) and is for the passage of the upper flange portion (33) and the lower flange portion (34) of the slider (30) that are close to the butterfly bar arm portion (72). When the box bar member (40) and the butterfly bar member (70) engage, and the slider (30) is positioned in the slider housing area (80) and in contact with the box bar main body (41), the inclined projection (421) contacts the outer circumference of the slider (30), causing the slider (30) to tilt toward the butterfly bar member (70). On the outer circumference of one end of the half element (73) that is away from the second element row (60), a recess (731) is formed that is recessed away from the flange passage (74), and the recess (731) communicates with the flange passage (74). When the box bar member (40) and the butterfly bar member (70) engage, and the slider (30) is positioned in the slider housing area (80) and in contact with the box bar body (41), the upper flange portion (33) and / or the lower flange portion (34) and the recess (731) are distributed front to back along the direction of movement of the slider (30) when closing the slide fastener, and the ends of the upper flange portion (33) and / or the lower flange portion (34) are able to contact the recess (731). A slide fastener characterized by the following features.

2. The slide fastener according to claim 1, characterized in that the recess (731) is formed on the front and back surfaces of the half element (73), the recess (731) on the front surface of the half element (73) is capable of contacting the end of the upper flange portion (33), and the recess (731) on the back surface of the half element (73) is capable of contacting the end of the lower flange portion (34).

3. The slide fastener according to claim 1, characterized in that the outer contour of the recess (731) includes a plurality of recessed slopes (75), and the plurality of recessed slopes (75) are sequentially connected along the length direction of the slide fastener.

4. The slide fastener according to claim 3, characterized in that the inclination of the plurality of recessed slopes (75) with respect to the central axis extending along the length direction of the slide fastener gradually increases.

5. The slide fastener according to claim 3 or 4, characterized in that there are three recessed slopes (75), the three recessed slopes (75) are a first slope (751), a second slope (752), and a third slope (753) that are sequentially connected along the length direction of the slide fastener, and the first slope (751) and the outer circumferential surface of the half element (73), and the third slope (753) and the outer circumferential surface of the half element (73) are both connected by an arc segment (754).

6. A slide fastener according to any one of claims 1 to 4, characterized in that when the box bar member (40) and the butterfly bar member (70) engage, the slider (30) is positioned in the slider housing area (80) and in contact with the box bar main body (41), the inclination angle α at which the inclined projection (421) inclins the slider (30) toward the butterfly bar member (70) is 20° to 25°.

7. A slide fastener according to any one of claims 1 to 4, characterized in that when the box bar member (40) and the butterfly bar member (70) engage, the slider (30) is positioned in the slider housing area (80) and contacts the box bar main body (41), a gap (43) is formed between the portion of the box bar arm portion (42) other than the inclined projection (421) and the slider (30).

8. The slide fastener according to any one of claims 1 to 4, characterized in that the box bar member (40) further includes a first magnet (44) fixed to the box bar body (41), the butterfly bar member (70) further includes a second magnet (76) fixed to the butterfly bar body (71), and the first magnet (44) and the second magnet (76) are capable of generating a magnetic attractive force that causes the box bar member (40) and the butterfly bar member (70) to rotate in opposition to each other.

9. A slide fastener according to any one of claims 1 to 4, characterized in that a reinforcing rib (35) is fixedly installed on one surface of the upper wing plate (31) that is close to the butterfly bar member (70).

Images