Easy-to-replace buckle structure and assembly method

Abstract

A fastener structure and assembly method that is easily replaceable, the fastener structure comprising a fastener body, a first webbing hole for a webbing to pass through provided on the fastener body, and a movable webbing shaft in the shape of a long rod for winding the webbing; wherein a pair of oppositely positioned slots are provided on the end of the fastener body, the two ends of the movable webbing shaft being insertable into the slots and removable from the slots under the action of force. The movable webbing shaft of the present invention is detachably mounted on the fastener body. During use, the webbing is wound around the movable webbing shaft, and the movable webbing shaft can be tightened so that the movable webbing shaft does not fall off, thereby ensuring safety in use. When the fastener body needs to be replaced, the movable webbing shaft can be removed from the original fastener body and replaced with a new one for use. The fastener structure that is easily replaceable of the present invention has the characteristics of simple structure, low cost, easy processing and assembly, and practical functions, and is highly practical.

Description

Technical field

[0001] The invention relates to a safety belt buckle, and in particular to an easily replaceable buckle structure and an assembly method. [Background Technology]

[0002] Child safety seats often use seatbelt buckles. These buckles typically consist of two detachable parts, each connected to a webbing (seatbelt). When in use, the buckle assembles to secure the child to the seat. When not in use, the buckle detaches, making it easier to remove the child. Existing child safety seats use a fixed, non-replaceable connection between the webbing and the buckle. During the production and assembly process, the webbing is threaded through the buckle's webbing holes and secured to the child safety seat. Once the buckle is shipped to the user, the webbing and buckle cannot be easily removed. To replace a damaged buckle, either replace the child safety seat with a new one or cut the webbing, replace it with a new buckle, and then sew the webbing back together. The former increases costs, while the latter poses a safety hazard. Similar issues also exist in other products that use seatbelt buckles, such as backpacks, helmets, and school bags, where the buckle cannot be replaced once connected to the webbing. Therefore, in many products, the structural structure of the fixed connection between the webbing and the safety belt buckle increases the inconvenience of use to a certain extent, and is not conducive to replacement in the event of damage later. [Summary of the invention]

[0003] The present invention aims to solve the above problems and provide a fastener structure that is safe, reliable and easy to replace.

[0004] In order to solve the above problems, the present invention provides an easily replaceable buckle structure, including a buckle body, on which a first webbing hole for the webbing to pass through is provided, and the structure is characterized in that it also includes a movable webbing shaft in the shape of a long rod for winding the webbing; wherein, a pair of oppositely positioned slots are provided on the end of the buckle body, and the two ends of the movable webbing shaft can be embedded in the slots and can be removed from the slots under the action of force.

[0005] Furthermore, the card slot is provided with a first direction opening and a second direction opening; the end of the movable webbing shaft can enter the card slot from the first direction opening so that the movable webbing shaft overlaps between the card slots in the direction of the second direction opening.

[0006] Furthermore, when the movable webbing shaft is embedded in the clamping slot, the movable webbing shaft is spaced apart from the surface of the buckle body to form a second webbing hole for the webbing to pass through.

[0007] Furthermore, the slot includes a first slot section, a second slot section and a third slot section, the second slot section is located between the first slot section and the third slot section, and the minimum distance through which the movable webbing shaft can pass in the second slot section is smaller than the minimum distance through which the movable webbing shaft can pass in the first slot section.

[0008] Furthermore, the first slot section is flared to facilitate the entry or exit of the movable webbing shaft.

[0009] Furthermore, the second slot segment is composed of inner wall portions that are relatively spaced apart, and the inner wall portions respectively include a first introduction surface, an extrusion surface and a second introduction surface, the first introduction surface is connected to the inner wall of the first slot segment, the second introduction surface is connected to the inner wall of the third slot segment, and the extrusion surface is connected between the first introduction surface and the second introduction surface.

[0010] Furthermore, the distance between the extrusion surfaces is the smallest in the second slot section.

[0011] Furthermore, when the movable webbing shaft enters the second slot section from the first slot section, the movable webbing shaft enters the third slot section by squeezing the squeezing surface.

[0012] Furthermore, one end of the third slot segment is connected to the second slot segment, and the other end thereof is closed.

[0013] In addition, the present invention also provides a method for assembling a replaceable buckle, which is characterized in that it includes the above-mentioned buckle body, a movable webbing shaft and a webbing, and the assembly process includes the following steps:

[0014] Fold the webbing in half and pass it through the first webbing hole;

[0015] The movable webbing shaft is passed through the folded portion of the webbing, and both ends of the movable webbing shaft are embedded into the card slots of the buckle body to connect the buckle body, the movable webbing and the webbing together.

[0016] The beneficial contribution of the present invention is that it effectively solves the above-mentioned problems. The easily replaceable buckle structure of the present invention includes a buckle body and a movable webbing shaft. The movable webbing shaft is detachably arranged on the buckle body. When in use, the webbing is wound around the movable webbing shaft, and the movable webbing shaft can be tightened so that the movable webbing shaft will not fall off to ensure safety in use. When the buckle body needs to be replaced, the movable webbing shaft can be taken out from the original buckle body to replace the new buckle body for use. The easily replaceable buckle structure of the present invention can be applied to products such as child safety seats, backpacks, helmets, and school bags that require the use of webbing and seat belt buckles to facilitate the replacement of seat belt buckles when they are damaged. The easily replaceable buckle structure of the present invention has the characteristics of simple structure, low cost, easy processing and assembly, and practical functions. It has strong practicality and should be vigorously promoted.

Brief Description of the Drawings

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the structural decomposition of the present invention.

[0019] Figure 3 It is a plan view of the card slot of the present invention.

[0020] Figure 4 2 is a schematic diagram of the installation principle, which shows a schematic diagram of the webbing passing through the first webbing hole.

[0021] Figure 5 Schematic diagram of the installation principle, which shows the schematic diagram of inserting the movable webbing shaft into the webbing.

[0022] Figure 6 Schematic diagram of the installation principle, which shows the schematic diagram of the movable webbing shaft being embedded in the slot.

[0023] Among them, the buckle body 10, the first webbing hole 11, the slot 12, the first direction opening 121, the second direction opening 122, the first slot section 123, the second slot section 124, the first introduction surface 1241, the extrusion surface 1242, the second introduction surface 1243, the third slot section 125, the second webbing hole 13, the movable webbing shaft 20, and the webbing 30. [Specific implementation method]

[0024] The following examples are provided to further explain and supplement the present invention and do not constitute any limitation to the present invention.

[0025] like Figures 1 to 6As shown, the easily replaceable buckle structure of the present invention mainly lies in that a detachable movable webbing shaft 20 is provided on the buckle body 10. When in use, the webbing 30 is wound around the movable webbing shaft 20, and the movable webbing shaft 20 can be tightened so that the movable webbing shaft 20 will not fall off. When the buckle body 10 needs to be replaced, the movable webbing shaft 20 can be taken out from the original buckle body 10 to replace the new buckle body 10 for use.

[0026] like Figures 1 to 3 As shown, the buckle body 10 is part of a safety belt buckle. Typically, a safety belt buckle consists of two separable parts, such as a female buckle and a male buckle, a buckle base and a plug buckle, or a buckle base and a buckle. The buckle body 10, as part of a safety belt buckle, can be either the male buckle or the female buckle, or the buckle base or the buckle. In other words, any safety belt buckle structure that requires connection to a webbing 30 and that can be replaced later can serve as the buckle body 10 of the present invention.

[0027] like Figures 1 to 3 As shown, the buckle body 10 is provided with a first webbing hole 11 through which the webbing 30 can pass. This first webbing hole 11 is a well-known structure and is commonly provided on existing buckle bodies 10. This first webbing hole 11 allows the webbing 30 to pass through and connect the webbing 30 to the buckle body 10. This first webbing hole 11 is used to pass the double-layered webbing 30 folded in half. During use, the entire double-layered webbing 30 can pass through the first webbing hole 11.

[0028] What is different from the existing structure is that Figures 1 to 3 As shown, a pair of opposite slots 12 are provided at the ends of the buckle body 10. The slots 12 can be embedded with a movable webbing shaft 20, so that a replaceable structure is formed between the movable webbing shaft 20, the webbing 30 and the buckle body 10, so that the buckle body 10 can be replaced when it is damaged.

[0029] like Figures 1 to 3 As shown, the movable webbing shaft 20 is used to wind the webbing 30. It is in the shape of a long rod. Its specific shape is not limited and can be cylindrical, flat, long rod, or other shapes. The movable webbing shaft 20 needs to withstand the tension of the webbing 30. Therefore, the strength of the movable webbing shaft 20 must be high to meet the requirements of use. In this embodiment, the movable webbing shaft 20 is made of metal. In other embodiments, the movable webbing shaft 20 can also be made of other high-strength materials.

[0030] The position of the slots 12 provided on the buckle body 10 can be adjusted as needed. In this embodiment, the slots 12 are located near the first webbing hole 11. The slots 12 are positioned relative to each other, allowing the ends of the movable webbing shaft 20 to be inserted into the slots 12 and laterally overlapped between the two slots 12, thereby facilitating connection with the webbing 30.

[0031] The movable webbing shaft 20 can be inserted into the card slot 12 under the action of force, and can be removed from the card slot 12 under the action of force, thereby forming a detachable connection to facilitate the replacement of the buckle body 10.

[0032] After the movable webbing shaft 20 is inserted into the slot 12, in the absence of external force, both ends of the movable webbing shaft 20 are located in the slot 12 and will not actively fall out. During normal use, the force applied by the webbing 30 to the movable webbing shaft 20 also prevents the movable webbing shaft 20 from falling out of the opening. Therefore, during daily use, the connection between the movable webbing shaft 20 and the buckle body 10 can be ensured to be reliable, and the movable webbing shaft 20 is unlikely to fall out of the slot 12 at will.

[0033] like Figure 2 As shown, the card slot 12 is respectively provided with a first direction opening 121 and a second direction opening 122 .

[0034] like Figure 2 As shown, the first direction opening 121 is used to allow the movable webbing shaft 20 to enter the slot 12. In this embodiment, the opening direction of the first direction opening 121 is perpendicular or nearly perpendicular to the first webbing hole 11.

[0035] like Figure 1 、 Figure 2 As shown, the second direction opening 122 is used to allow the movable webbing shaft 20 to be horizontally overlapped between the two slots 12. In this embodiment, the opening direction of the second direction opening 122 is parallel or nearly parallel to the first webbing hole 11.

[0036] During installation, both ends of the movable webbing shaft 20 can enter the slot 12 from the first direction opening 121 so that the movable webbing shaft 20 is overlapped between the slots 12 in the direction of the second direction opening 122 (e.g. Figure 1 shown).

[0037] like Figures 1 to 3As shown, when the movable webbing shaft 20 is embedded in the slot 12, the movable webbing shaft 20 is spaced apart from the surface of the buckle body 10 to form a second webbing hole 13 through which the webbing 30 can pass. The second webbing hole 13 and the first webbing hole 11 intersect to form a curved channel. The first webbing hole 11 and the second webbing hole 13 are used to pass the webbing 30 to restrict the path of the webbing 30: the double-layer webbing (30) folded in half passes through the first webbing hole 11 and can be sleeved on the movable webbing shaft 20. When the movable webbing shaft 20 is overlapped between the card slots 12, one layer of the double webbing passes through the second webbing hole 13, so that the double-folded webbing 30 bends and passes between the first webbing hole 11 and the second webbing hole 12, and then the installed webbing 30 can apply a force to the movable webbing shaft 20 during use to prevent the movable webbing shaft 20 from escaping from the first direction opening 121 of the card slot 12, so as to ensure the reliability and safety of the connection. The second webbing hole 13 is used to allow one layer of the double-layer webbing 30 folded in half to pass through.

[0038] like Figure 3 As shown, in order to prevent the movable webbing shaft 20 from actively falling out of the slot 12 after being inserted into the slot 12 , the slot 12 is structurally designed to include a first slot section 123 , a second slot section 124 and a third slot section 125 .

[0039] like Figure 3 As shown, the second slot section 124 is located between the first slot section 123 and the third slot section 125, wherein the second slot section 124 has the smallest passable distance, and the minimum distance for the movable webbing shaft 20 to pass through is smaller than the minimum distance for the movable webbing shaft 20 to pass through in the first slot section 123. In this way, when the movable webbing shaft 20 enters the first slot section 123, it is necessary to squeeze the second slot section 124 before it can continue to be inserted inward.

[0040] To facilitate installation, Figure 3 As shown, the first slot section 123 is in a flared shape, and its cross-sectional dimension should be larger than the cross-sectional dimension of the end portion of the movable webbing shaft 20 , so as to facilitate the movable webbing shaft 20 to enter or escape.

[0041] like Figure 3 As shown, the second engaging slot section 124 is composed of relatively spaced inner wall portions, each of which includes a first introduction surface 1241, an extrusion surface 1242, and a second introduction surface 1243. The first introduction surface 1241 is connected to the inner wall of the first engaging slot section 123. The second introduction surface 1243 is connected to the inner wall of the third engaging slot 12. The extrusion surface 1242 is connected between the first introduction surface 1241 and the second introduction surface 1243.

[0042] like Figure 3 As shown, in the second slot section 124, the distance between the extrusion surfaces 1242 is the smallest, and the minimum distance between the extrusion surfaces 1242 should be slightly smaller than the circumferential dimension of the movable webbing shaft 20. Therefore, when the movable webbing shaft 20 wants to pass through the second slot section 124, it must squeeze the extrusion surfaces 1242. In this way, it is ensured that the movable webbing shaft 20 cannot actively pass through the second slot section 124 when there is no external force or a very small external force.

[0043] The first introduction surface 1241 and the second introduction surface 1243 play an introduction role, which allows the movable webbing shaft 20 to be conveniently squeezed from the first slot section 123 into the extrusion surface 1242 and then into the third slot section 125, or allows the movable webbing shaft 20 to be conveniently squeezed from the third slot section 125 into the extrusion surface 1242 and then into the first slot section 123.

[0044] The shapes of the first introduction surface 1241 and the second introduction surface 1243 can be set as needed. In this embodiment, Figure 3 As shown, it is an inclined surface. The shape of the extrusion surface 1242 can be set as needed. In this embodiment, Figure 3 As shown, the extrusion surface 1242 is a plane.

[0045] like Figure 3 As shown, one end of the third slot segment 125 is connected to the second slot segment 124, while the other end is closed. The cross-sectional shape of the third slot segment 125 is preferably configured to match the cross-sectional shape of the end of the movable webbing shaft 20. If the end of the movable webbing shaft 20 is cylindrical, the third slot segment 125 can be configured to be an arc-shaped, such as a C-shaped, that connects with the second slot segment 124.

[0046] like Figure 1 、 Figure 2 As shown, since the movable webbing shaft 20 needs to be squeezed through the second slot section 124, the slot 12 has a certain degree of deformation ability. This deformation ability can be given by the material itself or by the position and structure of the slot 12. In this embodiment, the buckle body 10 is made of plastic material, and the slot 12 is located relatively close to a surface of the buckle body 10, so that the wall thickness of the slot 12 on one side of the squeeze direction is limited. Therefore, the whole has a certain elastic extrusion ability and can be squeezed to allow the movable webbing shaft 20 to pass through the second slot section 124.

[0047] In this way, the easily replaceable buckle structure of the present invention is formed. The movable webbing shaft 20 is detachably mounted between the slots 12 of the buckle body 10 , and a second webbing hole 13 is formed between the movable webbing shaft 20 and the buckle body 10 .

[0048] When in use, first fold the webbing 30 that needs to be connected to the buckle body 10 in half, and then pass the folded end through the first webbing hole 11 (such as Figure 4 Thereafter, the movable webbing shaft 20 is passed through the folded portion of the webbing 30 so that the webbing 30 is sleeved on the movable webbing shaft 20 (as shown); Figure 5 As shown), then the two ends of the movable webbing shaft 20 are respectively embedded in the card slot 12 of the buckle body 10, so that the end of the movable webbing shaft 20 is located in the third card slot section 125 of the card slot 12 (as shown). Figure 6 At this point, the movable webbing shaft 20 is connected to the buckle body 10, and the webbing 30 is wound around the movable webbing shaft 20 and extends through the first webbing hole 11. Because the webbing 30 pulls on the movable webbing shaft 20 in a direction away from the first directional opening 121, during normal use, when the safety belt buckle is engaged, the webbing 30 will forcefully pull on the movable webbing shaft 20, forcing the movable webbing shaft 20 toward the closed end of the third retaining slot section 125. This prevents the movable webbing shaft 20 from falling out during use. When the safety belt buckle is not engaged and the buckle body 10 is in its natural state, the retaining slot 12 is provided with the second retaining slot section 124. Therefore, the movable webbing shaft 20 is still confined within the third retaining slot section 125 and is not easily dislodged, thereby preventing the movable webbing shaft 20 from falling out and being lost. When the buckle body 10 needs to be replaced, loosen the webbing 30 slightly, then apply force to pull the movable webbing shaft 20 along the first direction opening 121, and take the movable webbing shaft 20 out of the slot 12. Then, the movable webbing shaft 20 can be pulled away from the webbing 30, so that the webbing 30 can be pulled out from the first webbing hole 11, and the buckle body 10 can be removed for replacement.

[0049] The easily replaceable buckle structure of the present invention has a simple structure and practical functions. It has strong practicality and should be widely promoted.

[0050] Although the present invention is disclosed through the above embodiments, the scope of the present invention is not limited thereto. Without departing from the concept of the present invention, the above components can be replaced with similar or equivalent elements known to those skilled in the art.

Claims

1. A fastener structure that is easy to replace, comprising a fastener body (10), wherein a first webbing hole (11) is provided on the fastener body (10) for a webbing (30) to pass through, characterized in that: The first webbing hole (11) is used for allowing the folded double-layer webbing (30) to pass through. It also includes: The movable webbing shaft (20) is in the shape of a long rod and is used for winding the webbing (30) and is inserted between the folded double-layer webbing (30) passing through the first webbing hole (11); A pair of oppositely positioned slots (12) are provided at the end of the buckle body (10), and both ends of the movable webbing shaft (20) can be embedded in the slots (12) and can be removed from the slots (12) under the action of force; When the movable webbing shaft (20) is embedded in the clamping slot (12), the movable webbing shaft (20) is spaced apart from the surface of the buckle body (10) to form a second webbing hole (13) for the webbing (30) to pass through; the second webbing hole (13) is connected to the first webbing hole (11) to form a bent channel; the second webbing hole (13) is used to allow one layer of the double webbing (30) to pass through; The card slot (12) is provided with a first direction opening (121) and a second direction opening (122); The end of the movable webbing shaft (20) can enter the card slot (12) through the first direction opening (121) so that the movable webbing shaft (20) overlaps between the card slots (12) in the direction of the second direction opening (122); The opening direction of the first direction opening (121) is perpendicular or nearly perpendicular to the first webbing hole (11); the opening direction of the second direction opening (122) is parallel or nearly parallel to the first webbing hole (11); the first webbing hole (11) and the second webbing hole (13) can be used to pass through the webbing (30) to constrain the path of the webbing (30); the folded double-layer webbing (30) passes through the first webbing hole (11) and can be sleeved on the movable webbing shaft (20) When the movable webbing shaft (20) is overlapped between the card slots (12), one layer of the double-layer webbing passes through the second webbing hole (13), thereby allowing the double-folded webbing (30) to bend and pass between the first webbing hole (11) and the second webbing hole (12), so that the installed webbing (30) can exert a force on the movable webbing shaft (20) during use to prevent the movable webbing shaft (20) from escaping from the first direction opening (121) of the card slot (12).

2. The easily replaceable buckle structure according to claim 1, characterized in that: The slot (12) comprises a first slot section (123), a second slot section (124) and a third slot section (125); the second slot section (124) is located between the first slot section (123) and the third slot section (125); and the minimum distance in the second slot section (124) through which the movable ribbon shaft (20) can pass is smaller than the minimum distance in the first slot section (123) through which the movable ribbon shaft (20) can pass.

3. The easily replaceable buckle structure according to claim 2, characterized in that: The first slot section (123) is in a flared shape to facilitate the entry or exit of the movable webbing shaft (20).

4. The easily replaceable buckle structure according to claim 2, wherein: The second slot section (124) is composed of inner wall portions that are relatively spaced apart, and the inner wall portions respectively include a first introduction surface (1241), an extrusion surface (1242) and a second introduction surface (1243). The first introduction surface (1241) is connected to the inner wall of the first slot section (123), the second introduction surface (1243) is connected to the inner wall of the third slot section (125), and the extrusion surface (1242) is connected between the first introduction surface (1241) and the second introduction surface (1243).

5. The easily replaceable buckle structure according to claim 4, characterized in that: The distance between the extrusion surfaces (1242) in the second slot section (124) is the smallest.

6. The easily replaceable buckle structure according to claim 4, characterized in that: When the movable webbing shaft (20) enters the second slot section (124) from the first slot section (123), the movable webbing shaft (20) enters the third slot section (125) by squeezing the squeezing surface (1242).

7. The easily replaceable buckle structure according to claim 4, characterized in that: One end of the third slot section (125) is connected to the second slot section (124), and the other end is closed.

8. A method for assembling a replaceable buckle, characterized in that: The buckle comprises a buckle body (10), a movable webbing shaft (20) and a webbing (30) as claimed in any one of claims 1 to 7, and the assembly thereof comprises the following steps: Folding the webbing (30) in half and passing it through the first webbing hole (11); The movable webbing shaft (20) is passed through the folded portion of the webbing (30), and both ends of the movable webbing shaft (20) are embedded in the slots (12) of the buckle body (10) to connect the buckle body (10), the movable webbing, and the webbing (30) together.

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