Metallic clasp assembly

Abstract

This invention relates to the field of snap-fit ​​assembly, specifically to a metal snap-fit ​​assembly device, comprising a handle and two latch units. Each latch unit includes a body and a latch fixedly connected to the body. The bodies of both latch units are rotatably connected to the bottom of the handle, and the latches of the two latch units face each other and are magnetic. Each body is fixedly connected to a rotating shaft, and each rotating shaft is fixedly connected to meshing gears. A limiting member is provided between one of the bodies and the bottom of the handle to limit the rotation of the body. The limiting member includes a limiting rod and an elastic member. The limiting rod slides axially on the body. A locking portion is provided on the bottom side of the handle, including a first one-way tooth to prevent the two latches from opening. The end of the limiting rod has a first locking tooth for engaging with the first one-way tooth. The limiting rod and the elastic member are connected, and the end of the limiting rod is pressed against the locking portion under the elasticity of the elastic member. This design facilitates the assembly of metal snap-fit ​​devices.

Description

Technical Field

[0001] This invention relates to the field of snap-fit ​​assembly, and more specifically to a metal snap-fit ​​assembly device. Background Technology

[0002] After assembly, automotive interior parts need to be secured with metal clips to improve the stability of the assembly.

[0003] Current snap-fit ​​fasteners are similar to an inverted "V" shape. During installation, the fastener needs to be manually held and pressed onto the corresponding product part. However, due to the strong clamping force of the metal snap-fit ​​fasteners, considerable pressure is often required to press them into place. This makes installation very strenuous, and prolonged pressure on the fingers can easily cause injury, pain, and discomfort. Furthermore, the small size of the metal snap-fit ​​fasteners makes them difficult to hold and prone to falling off, further complicating assembly and hindering precise placement, thus affecting assembly efficiency. Summary of the Invention

[0004] The present invention aims to provide a metal buckle assembly device to facilitate the assembly of metal buckles.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a metal buckle assembly device, including a handle and two latch units, each latch unit including a body and a latch fixedly connected to the body, the bodies of the two latch units being rotatably connected to the bottom of the handle, the latches of the two latch units being opposite to each other, and the latches being magnetic.

[0006] Both bodies are fixedly connected to a rotating shaft, and gears are fixedly connected to both rotating shafts. The gears on the two rotating shafts mesh.

[0007] One of the components is a limiting member between the bottom of the main body and the handle, which limits the rotation of the main body. The limiting member is installed on the main body and includes an axially movable limiting rod and an elastic member. A locking part is provided on the bottom side of the handle. The locking part includes a first one-way tooth for preventing the two latches from opening. The end of the limiting rod is provided with a first locking tooth for engaging with the first one-way tooth. The limiting rod and the elastic member are connected, and the end of the limiting rod is pressed against the locking part under the elasticity of the elastic member.

[0008] The principle and advantages of this solution are as follows: The two latches in this solution open to match the shape of the buckle. When installing the buckle, place it between the two latches. Due to the magnetism of the latches, they attract the metal buckle, thus adhering it to the latches and preventing it from falling off. Then, holding the handle, place the buckle on the product part and press down on the handle. The handle, through the latches, presses down on the buckle, thus assembling the buckle onto the corresponding product. Installing buckles using this metal buckle assembly device has the following advantages compared to directly holding the buckle by hand: 1. Simple assembly, stable assembly results, and good quality; 2. Less likely to injure or hurt hands, improving operating comfort; 3. Improves assembly efficiency and saves costs.

[0009] During the pressing of the buckle, the main body is limited by the limiting component. When in use, the limiting rod is pressed on the first one-way tooth under the elastic force of the elastic component. The first locking tooth is locked on the first one-way tooth, so that the main body cannot rotate in the direction of opening of the two locking tongues. In this way, when the locking tongue is pressed down to install the buckle, it can prevent the locking tongue from rotating and opening, and ensure that the locking tongue is in a static and stable state so that it can apply pressure to the buckle stably.

[0010] In this design, when the opening angle of the two latches increases, the angle cannot increase because the first locking tooth and the first one-way tooth are locked. However, when it is necessary to reduce the angle of the latches, since the first one-way tooth only has a one-way locking effect on the first locking tooth and does not have a locking effect in the opposite direction, rotating the latches to reduce the angle between the two latches will allow the first locking tooth to slide on the first one-way tooth. The first locking tooth and the first one-way tooth will not lock, thus allowing the angle of the two latches to decrease.

[0011] When it is necessary to increase the opening angle of the two latches, since the limiting rod slides axially on the body, the limiting rod is pulled away from the body. The limiting rod drives the first latch tooth away from the first one-way tooth, and the first latch tooth and the first one-way tooth are no longer stuck. The first latch tooth and the first one-way tooth are released from the stuck state. At this time, the body can be rotated to increase the opening angle of the two latches.

[0012] Since the two bodies are meshed by gears, this solution allows the rotation of one body to drive the rotation of the other body through the gear meshing, achieving synchronous rotation of the two bodies. Furthermore, the two bodies rotate in opposite directions, thereby increasing or decreasing the opening angle of the two latches and realizing the adjustment of the opening angle of the two latches. The operation is simple and convenient.

[0013] This solution adjusts the opening degree of the two latches, allowing them to adapt to different sizes of buckles, thus improving the applicability of this metal buckle assembly device.

[0014] Preferably, as an improvement, the snap-fit ​​portion further includes a second one-way tooth, the first one-way tooth and the second one-way tooth are arranged side by side, the first one-way tooth and the second one-way tooth are in opposite directions, and there is a clearance gap between the first one-way tooth and the second one-way tooth;

[0015] The end of the limiting rod is provided with a second locking tooth for engaging with the second one-way tooth, and the second locking tooth is in the opposite direction to the first locking tooth;

[0016] The main body is provided with a strip-shaped hole. The limiting member slides along the length of the strip-shaped hole and is located on the strip-shaped hole. When the limiting member is at one end of the strip-shaped hole, the first locking tooth is engaged with the first one-way tooth, and the second locking tooth is located at the clearance gap. When the limiting member is at the other end of the strip-shaped hole, the second locking tooth is engaged with the second one-way tooth, and the first locking tooth is located at the clearance gap. When the limiting member is located in the middle of the strip-shaped hole, the first locking tooth is engaged with the first one-way tooth, and at the same time, the second locking tooth is engaged with the second one-way tooth.

[0017] When the limiting component is located in the middle of the slot, the first locking tooth engages with the first one-way tooth, and the second locking tooth engages with the second one-way tooth. At this time, the first locking tooth and the first one-way tooth are locked, and the two latches cannot rotate in the opening direction. At the same time, the second locking tooth and the second one-way tooth are locked, and the two latches cannot rotate in the direction of decreasing angle. The angle between the two latches is fixed, and the two latches cannot swing in either direction. The degree of opening of the two latches is stable and unchanged. In this way, when assembling a batch of buckles of a fixed size, the situation where the angle between the latches decreases due to accidental contact with the latches when only the first one-way tooth and the first locking tooth are in action is avoided.

[0018] When the limiting member is at one end of the strip hole, the first locking tooth is engaged with the first one-way tooth, and the second locking tooth is located at the clearance gap. At this time, only the first locking tooth and the first one-way tooth are engaged, while the second locking tooth and the second one-way tooth do not interact. Therefore, the angle between the two locking tongues can be reduced. The first locking tooth slides on the first one-way tooth, and the first locking tooth and the first one-way tooth will not be engaged, thereby reducing the angle between the two locking tongues and realizing the adjustment of reducing the angle between the two locking tongues.

[0019] When the limiting member is at the other end of the strip hole, the second locking tooth is engaged with the second one-way tooth, and the first locking tooth is located at the clearance gap. At this time, only the second locking tooth and the second one-way tooth are engaged, while the first locking tooth and the first one-way tooth do not interact. Therefore, the two locking tongues cannot rotate in the direction of decreasing angle, but can only rotate in the direction of increasing angle. When the locking tongues are rotated, the second locking tooth slides on the second one-way tooth. The second locking tooth and the second one-way tooth will not be engaged, thereby allowing the angle of the two locking tongues to increase, thus realizing the adjustment of the angle of the two locking tongues.

[0020] With the structure of this solution, when rotating the latch, it is only necessary to push the limiting member to the end position of the strip hole, which will cause the body to rotate in one direction. The first or second locking tooth slides on the first or second one-way tooth, thereby realizing the adjustment of the opening angle of the latch. During adjustment, there is no need to continuously pull the limiting rod, making the operation simple and convenient.

[0021] Preferably, as an improvement, the limiting member further includes a support shell, the limiting rod passes through the support shell and is axially slidably connected to the support shell; the outer wall of the support shell slides along the length direction of the strip hole on the strip hole.

[0022] Therefore, the support shell supports the limiting rod and serves as a carrier for the axial sliding of the limiting rod, so that the axial sliding of the limiting rod does not directly act on the main body. By sliding the support shell within the slot, the position of the limiting rod at the end and middle of the slot is adjusted.

[0023] Preferably, as an improvement, a slider groove structure is provided between the outer wall of the support shell and the inner wall of the strip hole.

[0024] Therefore, the slider-slide-groove structure enables stable sliding between the outer wall of the support shell and the inner wall of the slotted hole. Furthermore, the slider and groove structure also serve to laterally limit the support shell, preventing it from detaching from the main body.

[0025] Preferably, as an improvement, a guide is fixedly provided on one of the components at the bottom of the body and the handle, and an arc-shaped groove is provided on the other component at the bottom of the body and the handle, with the guide slidably connected in the arc-shaped groove.

[0026] Therefore, when the main body rotates, the guide component slides in the arc-shaped groove, thus guiding the rotation of the main body and making the rotation of the main body more stable.

[0027] Preferably, as an improvement, the outer wall of the support shell and the inner wall of the strip hole are fixed by magnetic adsorption.

[0028] Thus, the position of the support shell is fixed by magnetic attraction. When the limiting member is not pushed to move in the strip hole, the position of the support shell will not change automatically, so that the position of the support shell remains stable.

[0029] Preferably, as an improvement, two staggered connecting ears are fixedly connected to the bottom of the handle, with a meshing space between the two connecting ears, and two rotating shafts are rotatably connected to the two connecting ears respectively, with gears meshing in the meshing space.

[0030] Therefore, the connecting lugs are used to connect the rotating shafts on the main body. The two connecting lugs are offset, creating a meshing space between them, which allows the gears on the two rotating shafts to mesh. At the same time, the offset of the two connecting lugs means that the lug rotatably connected to one of the main bodies is closer to the other, resulting in a smaller distance between the two main bodies and a more compact structure.

[0031] Preferably, as an improvement, the support shell is provided with an elastic element mounting groove, the elastic element is located in the elastic element mounting groove, one end of the elastic element is fixed to the inner wall of the elastic element mounting groove, and the other end of the elastic element is fixed to the limiting rod. Thus, the elastic element mounting groove is used to accommodate the elastic element, and since the elastic element is located inside the support shell, movement of the support shell will not affect the elastic element.

[0032] Preferably, as an improvement, the limiting rod is fixedly provided with a connecting part that connects to the elastic element. The connecting part facilitates the connection between the elastic element and the limiting rod.

[0033] Preferably, as an improvement, the handle is fitted with a rubber sleeve. The rubber sleeve makes the handle more flexible and improves the comfort of use. Attached Figure Description

[0034] Figure 1 This is a perspective view of the metal buckle assembly device in Example 1.

[0035] Figure 2 This is a perspective view of the handle without the first latch unit and the second latch unit installed. It mainly shows the structure at the bottom of the handle for installing the first latch unit.

[0036] Figure 3 This is a three-dimensional view of the first latch unit, mainly showing the outer surface of the first latch unit.

[0037] Figure 4 This is a three-dimensional view of the second latch unit, mainly showing the inner surface of the second latch unit.

[0038] Figure 5 This is a perspective view of the handle without the first latch unit and the second latch unit installed. It mainly shows the structure at the bottom of the handle for installing the second latch unit.

[0039] Figure 6 This is a three-dimensional view of the first latch unit, mainly showing the inner surface of the first latch unit.

[0040] Figure 7 This is a perspective view of the handle without the first latch unit installed, mainly illustrating the structure when the second latch unit is installed at the bottom of the handle.

[0041] Figure 8This is a cross-sectional view of the structure in which the limiting component and the supporting shell are slidably installed.

[0042] Figure 9 This is a perspective view of the metal buckle assembly device in Example 2.

[0043] Figure 10 This is a perspective view of the limiting component in Example 2.

[0044] Figure 11 This is a schematic diagram of the strip-shaped pores inside the first body.

[0045] Figure 12 This is a front view of the bottom of the handle, mainly illustrating the snap-fit ​​structure. Detailed Implementation

[0046] The following detailed description illustrates the specific implementation method:

[0047] The reference numerals in the accompanying drawings include: rubber sleeve 1, handle bottom 2, second connecting ear 3, first connecting ear 4, through hole 5, limiting groove 6, first one-way tooth 7, first arc groove 8, first body 9, limiting rod 10, second body 11, second gear 12, second guide 13, first guide 14, first gear 15, second arc groove 16, latch 17, first latch tooth 18, compression spring 19, elastic element mounting groove 20, connecting part 21, support shell 22, first magnet piece 23, sliding groove 24, second magnet piece 25, strip hole 26, second latch tooth 28, second one-way tooth 30, clearance gap 31.

[0048] Example 1

[0049] The basics are as follows: Figures 1-8 As shown: The metal buckle assembly device includes a handle and two latch units, namely a first latch unit and a second latch unit. The first latch unit and the second latch unit are located on both sides of the bottom 2 of the handle. In this embodiment, the handle is a vertical rod. To improve operating comfort and grip, a rubber sleeve 1 is fitted onto the handle.

[0050] Combination Figure 3 As shown, in this embodiment, the first latch unit includes a first body 9 and a latch 17 fixedly connected to the first body 9. The fixed connection method can be integral molding, welding, or other fixing methods. Combined with... Figure 4 As shown, the second latch unit in this embodiment includes a second body 11 and a latch 17 fixedly connected to the second body 11. The fixed connection method can be integral molding, welding or other fixing methods.

[0051] Combination Figure 1As shown, in this embodiment, the first latch unit and the second latch unit are located on both sides of the bottom 2 of the handle, respectively. The first body 9 and the second body 11 are opposite to each other and are rotatably connected to the bottom 2 of the handle. The two latches 17 are opposite to each other, and the space between the two latches 17 can match the shape of the "inverted V" shaped metal buckle. The latches 17 are magnetic and can attract the metal buckle. The latches 17 are magnetic in the following ways: if the latches 17 are made of metal, they can be magnetized to make them magnetic, or magnetic pieces can be glued to the opposite sides of the two latches 17 to make them magnetic.

[0052] Combination Figure 2 , Figures 4-6 As shown, the specific way in which the first body 9 and the second body 11 rotate at the bottom 2 of the handle is as follows: a first connecting ear 4 and a second connecting ear 3 are integrally formed on the bottom end of the bottom 2 of the handle. The first connecting ear 4 and the second connecting ear 3 are staggered. Both the first connecting ear 4 and the second connecting ear 3 are provided with through holes 5. The inner surfaces of the first body 9 and the second body 11 are integrally fixedly connected with rotating shafts. The rotating shaft on the first body 9 is inserted into the through hole 5 of the first connecting ear 4, thereby realizing the rotational connection of the first body 9 to the bottom 2 of the handle. The rotating shaft of the second body 11 is inserted into the through hole 5 of the second connecting ear 3, thereby realizing the rotational connection of the second body 11 to the bottom 2 of the handle.

[0053] To prevent the rotating shaft from detaching from the through hole 5 and to improve the stability of the rotating shaft's rotation within the through hole 5, the rotating shaft on the second body 11 is inserted into the through hole 5 of the second connecting ear 3. The portion of the rotating shaft protruding from the through hole 5 is flattened, hammered, or melted into a mushroom shape, thus abutting against the second connecting ear 3 and preventing the rotating shaft on the second body 11 from detaching from the through hole 5. Similarly, the rotating shaft on the first body 9 is inserted into the through hole 5 of the first connecting ear 4. The portion of the rotating shaft protruding from the through hole 5 is flattened, hammered, or melted into a mushroom shape, thus abutting against the first connecting ear 4 and preventing the rotating shaft on the first body 9 from detaching from the through hole 5. Since the second body 11 is installed first, followed by the first body 9, a notch is provided on the second body 11 so that the second body 11 does not obstruct the flattening, hammering, or melting into a mushroom shape of the portion of the rotating shaft on the first body 9 protruding from the first connecting ear 4. Of course, when the first body 9 is assembled first and the second body 11 is installed later, a notch can also be provided on the first body 9.

[0054] Combination Figure 6 , Figure 7As shown, in this embodiment, a first gear 15 is coaxially welded or integrally fixed on the rotating shaft of the first body 9, and a second gear 12 is coaxially welded or integrally fixed on the rotating shaft of the second body 11. When the rotating shaft of the first body 9 is installed on the first connecting ear 4, the first gear 15 is located on one side of the first connecting ear 4. When the rotating shaft of the second body 11 is installed on the second connecting ear 3, the second gear 12 is located on one side of the second connecting ear 3. Since the first connecting ear 4 and the second connecting ear 3 are staggered, there is a meshing space between the first connecting ear 4 and the second connecting ear 3, and the first gear 15 and the second gear 12 mesh at the meshing space.

[0055] To make the first body 9 and the second body 11 rotate more smoothly on the handle body, in this embodiment, arc-shaped grooves are provided on both sides of the handle body, namely the first arc-shaped groove 8 and the second arc-shaped groove 16. The first guide member 14 is integrally or welded to the inner side of the first body 9. The first guide member 14 is located in the first arc-shaped groove 8 and can slide in the first arc-shaped groove 8. The second guide member 13 is integrally or welded to the inner side of the second body 11. The second guide member 13 is located in the second arc-shaped groove 16 and can slide in the second arc-shaped groove 16.

[0056] Of course, in other embodiments, the arc-shaped groove does not necessarily have to be provided on the handle body. The arc-shaped groove can also be provided on the inner side of the first body 9 and the inner side of the second body 11. The guide members are welded or integrally fixed on both sides of the bottom 2 of the handle. In this way, the first body 9 and the second body 11 are installed on the bottom 2 of the handle, and the guide members are inserted into the corresponding arc-shaped grooves. The guidance is achieved through the cooperation of the guide members and the arc-shaped grooves.

[0057] Combination Figure 2 , Figure 3 , Figure 6 as well as Figure 8 As shown, in this embodiment, a limiting member is provided between the main body and the bottom 2 of the handle to limit the rotation of the main body. The limiting member includes a limiting rod 10, an elastic member, and a support shell 22. The support shell 22 is mounted on the first main body 9, and the first main body 9 has a transverse hole. The support shell 22 is snapped, glued, or fixed in the hole by screws, thereby fixing the support shell 22 and the first main body 9. The support shell 22 can be cylindrical or square, etc. In this embodiment, a cylindrical shape is preferred.

[0058] In this embodiment, the support shell 22 and the limiting rod 10 slide axially. Specifically, the support shell 22 has a transverse hole through which the limiting rod 10 passes. The side of the support shell 22 facing the bottom 2 of the handle has an elastic element mounting groove 20, which communicates with the hole for mounting the limiting rod 10. An annular connecting part 21 is integrally formed on the outer wall of the limiting rod 10. The connecting part 21 is located in the elastic element mounting groove 20, and an elastic element is installed in the elastic element mounting groove 20. In this embodiment, the elastic element is a compression spring 19. The compression spring 19 is sleeved on the limiting rod 10. One end of the compression spring 19 is fixed to the inner wall of the end of the elastic element mounting groove 20, and the other end of the compression spring 19 is abutted or welded to the connecting part 21. To prevent the limiting rod 10 from rotating on the support shell 22, a transverse guide groove is provided on the inner wall of the elastic element mounting groove 20, and a sliding block is integrally provided on the outer wall of the connecting part 21. The sliding block is slidably located in the guide slot. By the sliding block abutting against the inner wall of the guide groove, the limiting rod 10 can be prevented from rotating on the support shell 22.

[0059] Combination Figure 7 As shown, a locking part is provided on the side of the bottom 2 of the handle. In this embodiment, the locking part is a first one-way tooth 7 arranged in an arc shape. A limiting groove 6 is provided on the side of the bottom 2 of the handle, and the first one-way tooth 7 is located in the limiting groove 6. Figure 6 As shown, the end of the limiting rod 10 facing the bottom 2 of the handle is located in the limiting groove 6. The end of the limiting rod 10 is provided with a first locking tooth 18, which abuts against the first one-way tooth 7 in the limiting groove 6. In this way, the limiting rod 10 is pressed on the first one-way tooth 7 under the elastic force of the compression spring 19. Figure 1 When the limiting rod 10 moves to the right, it gets stuck because the plane of the first locking tooth 18 and the plane of the first one-way tooth 7 abut against each other, so the limiting rod 10 cannot move. However, when the limiting rod 10 moves to the left, the first one-way tooth 7 and the first locking tooth 18 will not abut against each other and get stuck. The first locking tooth 18 can slip on the first one-way tooth 7, so that the limiting rod 10 can move to the left.

[0060] Assume that initially, both latches 17 are in a closed state. When assembling the metal buckle, first pull the limiting rod 10 outwards towards the first body 9. The limiting rod 10 slides within the support shell 22, and the connecting part 21 on the limiting rod 10 presses against the compression spring 19. The first locking tooth 18 on the limiting rod 10 separates from the first one-way tooth 7 at the bottom of the handle 2. At this point, the limiting rod 10 is no longer locked to the first one-way tooth 7, and the combination... Figure 1As shown, when the first body 9 is rotated clockwise, the latch 17 on the first body 9 swings to the left. At the same time, the first body 9 drives the second gear 12 to rotate via the first gear 15. The second gear 12 drives the second body 11 to rotate, and the latch 17 on the second body 11 swings to the right, opening both latches 17. When the two latches 17 are opened to the appropriate angle, the limiting rod 10 is released. Under the pressure of the compression spring 19, the limiting rod 10 presses against the first one-way tooth 7. The first one-way tooth 7 and the first latch 18 abut against each other, at which point the first body 9 can no longer rotate clockwise.

[0061] Then, the clip is placed between the two latches 17. Because the latches 17 are magnetic, they attract the metal clip, thus adhering it to the latches and preventing it from falling off. Next, holding the handle, the clip is placed on the product part, and the handle is pressed down. The handle presses down on the clip through the latches 17, thus assembling the clip onto the corresponding product. When the handle is pressed down, the first one-way tooth 7 and the first locking tooth 18 abut against each other, preventing the first body 9 from rotating clockwise. Because the first gear 15 and the second gear 12 are meshed, the second body 11 also cannot rotate. Therefore, when the two latches 17 are pressed down to install the clip, they prevent the latches 17 from rotating and becoming unstable, ensuring that the latches 17 are in a static and stable state, allowing for stable pressure application to the clip.

[0062] When the angle of the latch 17 needs to be reduced, since the first one-way tooth 7 only has a one-way locking effect on the first latch tooth 18, the latch 17 is rotated to reduce the angle between the two latches 17. Figure 1 The first body 9 rotates counterclockwise, the limiting rod 10 moves to the left, and the first locking tooth 18 slides to the left on the first one-way tooth 7. During the sliding of the first locking tooth 18 on the first one-way tooth 7, the limiting rod 10 continuously squeezes the compression spring 19 and retracts. The first locking tooth 18 and the first one-way tooth 7 will not jam, so that the angle of the two locking tongues 17 can be reduced. No additional operation is required on the limiting rod 10. You only need to rotate the locking tongues 17 directly. The operation is simple and convenient.

[0063] Example 2

[0064] In Embodiment 1, the opening of the latch 17 is blocked by the first locking tooth 18 and the first one-way tooth 7, preventing rotation. When it is necessary to increase the angle between the two latches 17, the limiting rod 10 needs to be pulled outwards from the first body 9, keeping the first locking tooth 18 and the first one-way tooth 7 disengaged. Otherwise, after the limiting rod 10 presses the first one-way tooth 7 under the elastic force of the compression spring 19, the first locking tooth 18 and the first one-way tooth 7 will be blocked, preventing the angle between the two latches 17 from increasing. Since it is necessary to keep the first locking tooth 18 and the first one-way tooth 7 disengaged from the limiting rod 10, that is, to keep the limiting rod 10 pulled during the rotation of the first body 9, this operation is inconvenient. Meanwhile, if the two latches 17 are accidentally touched during the installation of the buckle, causing them to move closer together, the first one-way tooth 7 and the first locking tooth 18 will not be able to prevent the two latches 17 from moving closer together, thus changing the opening degree of the latches 17 and requiring readjustment, which is inconvenient.

[0065] Therefore, this embodiment is improved based on embodiment 1 as follows: Combining Figures 9-12 As shown, the snap-fit ​​part also includes a second one-way tooth 30, which is also arranged in an arc shape. The first one-way tooth 7 and the second one-way tooth 30 are arranged side by side, and the directions of the first one-way tooth 7 and the second one-way tooth 30 are opposite. There is a clearance gap 31 between the first one-way tooth 7 and the second one-way tooth 30.

[0066] Combination Figure 10 As shown, the end of the limiting rod 10 is also provided with a second locking tooth 28 for cooperating with the second one-way tooth 30. The second locking tooth 28 and the first locking tooth 18 are in opposite directions; the second locking tooth 28 is located below the first locking tooth 18.

[0067] Combination Figure 11 and Figure 10As shown, the first body 9 has a strip-shaped hole 26. In this embodiment, the support shell 22 is block-shaped and slides within the strip-shaped hole 26 in the first body 9 (the support shell 22 is located within the first body 9 and is not exposed). Specifically, a slider-groove structure is provided between the outer wall of the support shell 22 and the inner wall of the strip-shaped hole 26. The slider-groove structure includes a slider and a groove 24. In this embodiment, the groove 24 is located on the outer wall of the support shell 22, and the slider is fixed on the left and right inner walls of the strip-shaped hole 26. Through the cooperation of the slider and the groove 24, the support shell 22 can slide vertically on the inner wall of the strip-shaped hole 26. Simultaneously, through the cooperation of the slider and the groove 24, the support shell 22 is less likely to detach from the first body 9. Of course, in other embodiments, the slider can also be located on the outer wall of the support shell 22, and the groove 24 can be located on the inner wall of the strip-shaped hole 26. Through the cooperation of the slider and the groove 24, the sliding guidance of the support shell 22 within the strip-shaped hole 26 can also be achieved. In this embodiment, to facilitate the assembly of the support shell 22 and the first body 9, the first body 9 can be a detachable assembly structure. This allows the first body 9 to be disassembled from the slot 26, the support shell 22 to be placed in the slot 26, and then the first body 9 to be assembled and secured with screws. The limiting rod 10 protrudes from the surface of the first body 9.

[0068] In this embodiment, when the support shell 22 slides to the top of the strip hole 26, the first locking tooth 18 is engaged with the first one-way tooth 7, and the second locking tooth 28 is located at the clearance gap 31; when the support shell 22 of the limiting member slides to the bottom of the strip hole 26, the second locking tooth 28 is engaged with the second one-way tooth 30, and the first locking tooth 18 is located at the clearance gap 31; when the support shell 22 of the limiting member slides to the middle of the strip hole 26, the first locking tooth 18 is engaged with the first one-way tooth 7, and at the same time the second locking tooth 28 is engaged with the second one-way tooth 30.

[0069] To ensure the stability of the support shell 22 within the slotted hole 26 and prevent it from sliding freely, the outer wall of the support shell 22 and the inner wall of the slotted hole 26 are fixed by magnetic attraction. Specifically, a first magnet 23 is adhered to the outer wall of the support shell 22, and a second magnet 25 is adhered to the inner wall of the slotted hole 26. The first magnet 23 and the second magnet 25 are opposite each other. When the support shell 22 slides to the corresponding position (end or middle) of the slotted hole 26, the first magnet 23 and the second magnet 25 are opposite each other and attract each other, thereby preventing the support shell 22 from moving arbitrarily within the slotted hole 26. Of course, in other embodiments, if the support shell 22 is made of iron, magnets can be provided only on the inner wall of the slotted hole 26; if the inner wall of the slotted hole 26 is made of iron, magnets can be provided only on the outer wall of the support shell 22.

[0070] In this embodiment, when it is necessary to reduce the angle between the two latches 17, the support shell 22 is slid to the top of the strip hole 26. The first latch 18 is engaged with the first one-way tooth 7, and the second latch 28 is located at the clearance gap 31. At this time, only the first latch 18 and the first one-way tooth 7 are engaged, while the second latch 28 and the second one-way tooth 30 do not interact. Therefore, the angle between the two latches 17 can be reduced, and the first latch 18 slides on the first one-way tooth 7. The first latch 18 and the first one-way tooth 7 will not be engaged, thereby reducing the angle between the two latches 17 and achieving the adjustment of reducing the angle between the two latches 17.

[0071] When this device is needed to assemble the buckles, the support shell 22 is pushed to the middle of the strip hole 26. At this time, the first locking tooth 18 is locked on the first one-way tooth 7, and the second locking tooth 28 is locked on the second one-way tooth 30. The first locking tooth 18 and the first one-way tooth 7 are locked, and the two locking tongues 17 cannot rotate in the opening direction. At the same time, the second locking tooth 28 and the second one-way tooth 30 are locked, and the two locking tongues 17 cannot rotate in the direction of decreasing angle. At this time, the angle between the two locking tongues 17 is fixed, and the degree of opening of the two locking tongues 17 is in a stable and unchanged state. The two locking tongues 17 cannot swing left and right. In this way, when assembling a batch of buckles of a fixed size, the situation of accidentally touching the locking tongues 17 and causing the angle between the locking tongues 17 to change is avoided.

[0072] When the angle of the latch 17 needs to be increased, the support shell 22 is pushed to the bottom of the slot 26, and the first latch 18 and the second latch 28 move down. At this time, the second latch 28 and the second one-way tooth 30 engage, while the first latch 18 is located at the clearance gap 31, separating from the first one-way tooth 7. Only the second latch 28 and the second one-way tooth 30 are locked, and the first latch 18 and the first one-way tooth 7 do not interact. Therefore, the two latches 17 cannot rotate in the direction of decreasing angle because the second latch 28 and the second one-way tooth 30 are locked. The angle can only be increased because when the latch 17 is rotated, the second latch 28 slides on the second one-way tooth 30, and the second latch 28 and the second one-way tooth 30 will not lock, thus allowing the angle of the two latches 17 to increase, achieving the adjustment of the angle of the two latches 17.

[0073] With this design, when rotating the latch 17, simply push the limiting member to the end of the slot 26 to allow the first body 9 to rotate in one direction. The first locking tooth 18 or the second locking tooth 28 slides on the first one-way tooth 7 or the second one-way tooth 30, thereby adjusting the opening angle of the latch 17. During adjustment, there is no need to continuously pull the limiting rod 10, making the operation simple and convenient. When installing the buckle, adjust the support shell 22 to the middle of the slot 26. At this time, the first locking tooth 18 and the second locking tooth 28 act on the first one-way tooth 7 and the second one-way tooth 30 respectively, preventing the two latches 17 from swinging left and right, thus ensuring stability during the installation of the metal buckle.

[0074] The above descriptions are merely embodiments of the present invention, and common knowledge such as specific technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A metal clasp assembly apparatus, characterized by: The device includes a handle and two latch units. Each latch unit includes a body and a latch fixedly connected to the body. The bodies of the two latch units are rotatably connected to the bottom of the handle. The latches of the two latch units are opposite to each other, and the latches are magnetic. Both bodies are fixedly connected to a rotating shaft, and gears are fixedly connected to both rotating shafts. The gears on the two rotating shafts mesh. One of the components has a limiting member between the bottom of the main body and the handle to limit the rotation of the main body. The limiting member is installed on the main body and includes an axially movable limiting rod and an elastic member. A locking part is provided on the bottom side of the handle. The locking part includes a first one-way tooth for preventing the two latches from opening. The end of the limiting rod is provided with a first locking tooth for cooperating with the first one-way tooth. The limiting rod and the elastic member are connected, and the end of the limiting rod is pressed against the locking part under the elasticity of the elastic member.

2. The metal clasp assembly of claim 1, wherein: The snap-fit ​​part further includes a second one-way tooth, the first one-way tooth and the second one-way tooth are arranged side by side, the first one-way tooth and the second one-way tooth are in opposite directions, and there is a clearance gap between the first one-way tooth and the second one-way tooth. The end of the limiting rod is provided with a second locking tooth for engaging with the second one-way tooth, and the second locking tooth and the first locking tooth are in opposite directions; The main body is provided with a strip-shaped hole. The limiting member slides along the length of the strip-shaped hole and is located on the strip-shaped hole. When the limiting member is at one end of the strip-shaped hole, the first locking tooth is engaged with the first one-way tooth, and the second locking tooth is located at the clearance gap. When the limiting member is at the other end of the strip-shaped hole, the second locking tooth is engaged with the second one-way tooth, and the first locking tooth is located at the clearance gap. When the limiting member is located in the middle of the strip-shaped hole, the first locking tooth is engaged with the first one-way tooth, and at the same time, the second locking tooth is engaged with the second one-way tooth.

3. The metal clasp assembly of claim 2, wherein: The limiting component also includes a support shell, the limiting rod passes through the support shell and is axially slidably connected to the support shell; the outer wall of the support shell slides along the length direction of the strip hole and is located on the strip hole.

4. The metal clasp assembly of claim 3, wherein: A slider groove structure is provided between the outer wall of the support shell and the inner wall of the strip hole.

5. The metal clasp assembly of claim 1, wherein: A guide is fixedly provided on one of the components at the bottom of the body and the handle, and an arc-shaped groove is provided on the other component at the bottom of the body and the handle, with the guide slidably connected in the arc-shaped groove.

6. The metal buckle assembly device according to claim 3, characterized in that: The outer wall of the support shell and the inner wall of the strip hole are fixed by magnetic adsorption.

7. The metal buckle assembly device according to claim 1, characterized in that: Two staggered connecting ears are fixedly connected to the bottom of the handle, and there is a meshing space between the two connecting ears. Two rotating shafts are rotatably connected to the two connecting ears respectively, and the gears mesh at the meshing space.

8. The metal buckle assembly device according to claim 3, characterized in that: The support shell is provided with an elastic element mounting groove, the elastic element is located in the elastic element mounting groove, one end of the elastic element is fixed to the inner wall of the elastic element mounting groove, and the other end of the elastic element is fixed to the limiting rod.

9. The metal buckle assembly device according to claim 8, characterized in that: The limiting rod is fixedly provided with a connecting part that connects to the elastic element.

10. The metal buckle assembly device according to claim 1, characterized in that: The handle is covered with a rubber sleeve.

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