Earphone charging box internal component assembly device

Abstract

This invention relates to an assembly device for internal components of an earphone charging case, comprising a base plate, a fixing unit, and an assembly unit. The assembly unit includes a first mounting plate, a second mounting plate, a third mounting plate, and a latch. When not in assembly, the first mounting plate and the latch are both away from the case body. When in assembly, the assembly unit has a first latching state and a second latching state. When the assembly unit is in the first latching state, the first mounting plate moves towards the case body along a first direction, and the third mounting plate moves towards the case body along the height direction of the second mounting plate, causing the latch to extend into the receiving cavity. When the assembly unit is in the second latching state, the second mounting plate moves away from the case body along the first direction, causing the latch to latch the internal components to the case body. This invention, by setting up a fixing unit and an assembly unit in cooperation, achieves the assembly of the earphone charging case body and internal components, balancing assembly quality and efficiency.

Description

Technical Field

[0001] This invention relates to the field of headphone case technology, and more particularly to an assembly device for internal components of a headphone charging case. Background Technology

[0002] With the advancement of technology, true wireless Bluetooth earbuds have become increasingly popular among consumers. True wireless Bluetooth earbuds typically consist of two wireless earbuds and a charging case. Because they eliminate the wired connection of traditional earbuds, and each wireless earbud can be used independently, meeting users' individual Bluetooth earbud needs, they offer strong functionality. Therefore, the demand for true wireless Bluetooth earbuds continues to rise.

[0003] The charging case for true wireless Bluetooth earbuds provides storage protection and charging functionality. Although it's an accessory, it's quite important. Considering portability, the charging case cannot be too large; considering safety, the case body needs to meet certain strength requirements; considering battery life, the internal space utilization of the charging case is crucial. Therefore, the size, structural strength, and layout of various internal components such as circuitry and batteries are all key considerations in the design of the charging case.

[0004] Correspondingly, the assembly difficulty of the earphone charging case has also increased. Especially when assembling an internal component of the charging case with the main body, this internal component needs to be secured within the internal cavity of the case. Specifically, the case has a cavity, and the cavity wall has slots for assembling the internal component; the internal component needs to be engaged with the slots. Due to increased demand, traditional manual assembly can no longer meet the production volume requirements. While assembly using devices such as robotic arms or gripper cylinders can be problematic due to size limitations and the inability to meet assembly quality requirements, leading to issues such as insecure assembly and damage to the case or internal components. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the inability to balance the assembly quality and efficiency of the internal components of the earphone charging case with the case body, and to provide an assembly device for the internal components of the earphone charging case that can balance assembly quality and assembly efficiency.

[0006] This invention provides an assembly device for internal components of an earphone charging case, used for assembling the case body and internal components of an earphone charging case. The case body includes a receiving cavity, and the internal components are placed within the receiving cavity. The assembly device includes a base plate, on which a first mounting position and a second mounting position are sequentially arranged along a first direction; a fixing unit is disposed at the first mounting position for fixing the case body; and an assembly unit is disposed at the second mounting position, comprising a first mounting plate, a second mounting plate, a third mounting plate, and a latch. The first mounting plate is movably disposed on the base plate along the first direction, the second mounting plate is connected to the first mounting plate, and the third mounting plate is movably disposed along the second mounting position. The mounting plate is movable along its height on the second mounting plate, and the latch is connected to the third mounting plate. When not assembled, both the first mounting plate and the latch are away from the housing. During assembly, the assembly unit includes a first engaging state and a second engaging state. When the assembly unit is in the first engaging state, the first mounting plate moves towards the housing along the first direction, and the third mounting plate moves towards the housing along the height direction of the second mounting plate, causing the latch to extend into the receiving cavity. When the assembly unit is in the second engaging state, the second mounting plate moves away from the housing along the first direction, causing the latch to engage the internal components and the housing.

[0007] In one embodiment of the present invention, the assembly unit further includes a locking assembly disposed between the fixing unit and the first mounting plate; the locking assembly includes a locking wedge block and two locking limiting components, the locking wedge block being connected to the first mounting plate, the locking wedge block including a first locking surface and a first guide surface; the two locking limiting components are disposed opposite to each other on both radial sides of the locking wedge block, each locking limiting component including a limiting block and a clamping block, the limiting block being fixedly disposed, and a limiting spring being disposed between the limiting block and the clamping block. The two ends of the spring abut against the limiting block and the clamping block respectively, and the clamping block abuts against another clamping block. The clamping block includes a second guide surface adapted to the first guide surface and a second locking surface adapted to the first locking surface. When the assembly unit is in the first fastening state, the first guide surface abuts against the second guide surface, and the clamping block is separated. When the assembly unit is in the second fastening state, the first locking surface abuts against the second locking surface, and prevents the first mounting plate from moving along the first direction toward the side away from the box body.

[0008] In one embodiment of the present invention, the locking assembly further includes an unlocking wedge block, the locking wedge block being movable along the first direction, the unlocking wedge block including a third guide surface and a first unlocking surface; the locking limiting component further includes an unlocking block, the unlocking block being fixedly connected to the clamping block, the unlocking block including a second unlocking surface; the unlocking wedge block includes a separated state and an unlocked state, when the unlocking wedge block is in the separated state, the unlocking wedge block is separated from the unlocking block; when the unlocking wedge block is in the unlocked state, the unlocking wedge block moves towards the box body side along the first direction, the second unlocking surface slides along the third guide surface and abuts against the first unlocking surface, so that the first locking surface separates from the second locking surface.

[0009] In one embodiment of the present invention, the unlocking wedge block is provided with an abutment block extending radially therefrom, and the locking assembly further includes an unlocking spring located between the abutment block and the fixing unit. One end of the unlocking spring is fixedly disposed, and the other end abuts against the abutment block. The unlocking spring includes a first unlocking spring state and a second unlocking spring state. When the unlocking spring is in the first unlocking spring state, the abutment block compresses the unlocking spring, causing the unlocking wedge block to move from the separated state to the unlocked state. When the unlocking spring is in the second unlocking spring state, the unlocking spring drives the abutment block to move along the first direction, causing the unlocking wedge block to move from the unlocked state to the separated state.

[0010] In one embodiment of the present invention, the limiting block is connected to the base plate, the base plate is provided with an unlocking guide groove adapted to the unlocking wedge block, the unlocking wedge block is disposed in the unlocking guide groove, and the two ends of the unlocking spring abut against the groove wall of the unlocking guide groove and the abutment block, respectively.

[0011] In one embodiment of the present invention, the assembly unit further includes a first reset assembly, which includes a first reset column, a second reset column, and a first reset spring; the first reset column is connected to the first mounting plate, the second reset column is connected to the base plate, and the two ends of the first reset spring are respectively connected to the first reset column and the second reset column; wherein, when assembly is performed, the first reset column and the second reset column stretch the first reset spring; when not assembled, the first reset spring drives the first mounting plate to move away from the housing along the first direction.

[0012] In one embodiment of the present invention, the second mounting plate is movably disposed on the first mounting plate along the first direction; the assembly unit further includes a second reset assembly, the second reset assembly including a second reset spring and a reset baffle, the reset baffle being disposed at one end of the first mounting plate near the housing, the second reset spring being disposed between the reset baffle and the second mounting plate, and the two ends of the second reset spring respectively abutting against the reset baffle and the second mounting plate; wherein, when the assembly unit is in the first fastening state, the second mounting plate moves along the first direction and compresses the second reset spring; when the assembly unit is in the second fastening state, the second reset spring drives the second mounting plate to move along the first direction toward the side away from the housing, and drives the latch to fasten the internal component and the housing.

[0013] In one embodiment of the present invention, the assembly unit further includes a third return spring, which is disposed between the second mounting plate and the third mounting plate, with one end of the third return spring fixedly disposed and the other end abutting against the third mounting plate; wherein, when the assembly unit is in the first fastening state, the third mounting plate moves toward the box body along the height direction of the second mounting plate and compresses the third return spring; when not assembled, the third return spring drives the third mounting plate away from the box body along the height direction of the second mounting plate.

[0014] In one embodiment of the present invention, the assembly unit further includes a mounting guide rod and a fourth return spring. The mounting guide rod is disposed at one end of the third mounting plate near the housing. The latch is disposed on the mounting guide rod and is movable along the first direction. An abutment is provided at one end of the mounting guide rod away from the third mounting plate. The fourth return spring is disposed between the abutment and the latch, and both ends of the fourth return spring abut against the abutment and the latch, respectively.

[0015] In one embodiment of the present invention, a limit stop bar is provided on the second mounting plate, and a limit groove adapted to the limit stop bar is provided on the third mounting plate, wherein the limit stop bar extends into the limit groove and forms a limit on the third mounting plate.

[0016] The technical solution of the present invention has the following advantages compared with the prior art:

[0017] The earphone charging case internal component assembly device of this invention achieves the assembly of the earphone charging case body and internal components through the cooperation of a fixing unit and an assembly unit. During assembly, only three actions are required: controlling the first mounting plate to move relatively closer to the case body, controlling the latch to move relatively closer to the case body, and controlling the second mounting plate to move relatively away from the case body after the latch has inserted into the case body. This achieves rapid assembly of the case body and internal components. The entire device has a simple structure. While ensuring assembly efficiency, the components of the assembly unit cooperate with each other, using the latch to insert into the receiving cavity of the case body to fasten the internal components and the case body, effectively preventing damage to the case body or internal components during the assembly process. Attached Figure Description

[0018] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein...

[0019] Figure 1 This is a schematic diagram of the internal component assembly device of the earphone charging case in a preferred embodiment of the present invention;

[0020] Figure 2 This is a partial cross-sectional view of the internal component assembly device of the earphone charging case in a preferred embodiment of the present invention when it is not assembled.

[0021] Figure 3 This is a partial cross-sectional view of the assembly unit in the first fastening state in a preferred embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the locking assembly in a preferred embodiment of the present invention;

[0023] Figure 5 for Figure 4 A magnified view of a portion of the image;

[0024] Figure 6 This is a top view of the locking assembly when the assembly unit is in the first fastening state in a preferred embodiment of the present invention;

[0025] Figure 7 This is a top view of the locking assembly when the assembly unit is in the second engaging state in a preferred embodiment of the present invention;

[0026] Figure 8 This is a schematic diagram of the structure when the unlocking wedge block is in the separated state in a preferred embodiment of the present invention;

[0027] Figure 9 This is a schematic diagram of the structure of the unlocking wedge block in the unlocked state in a preferred embodiment of the present invention;

[0028] Figure 10 This is a schematic diagram of the base plate in a preferred embodiment of the present invention;

[0029] Figure 11 This is a top view of the first reset component in a preferred embodiment of the present invention;

[0030] Figure 12 This is a partial cross-sectional view from a first perspective when the assembly unit is in the first fastening state in a preferred embodiment of the present invention;

[0031] Figure 13 This is a partial cross-sectional view from a second perspective in a preferred embodiment of the present invention when the assembly unit is in the first fastening state;

[0032] Figure 14 This is a partial cross-sectional view from a first perspective in a preferred embodiment of the present invention when the assembly unit is in the second fastening state;

[0033] Figure 15 This is a partial cross-sectional view from a second perspective in a preferred embodiment of the present invention when the assembly unit is in the second fastening state;

[0034] Figure 16 This is a schematic diagram of the structure of the fourth reset spring in a preferred embodiment of the present invention.

[0035] Explanation of reference numerals in the accompanying drawings: 10. Box body; 11. Receiving cavity; 12. Internal component; D1. First direction; S1. First mounting position; S2. Second mounting position; 20. Base plate; 21. Fixing unit; 22. First unlocking guide groove; 23. Second unlocking guide groove; 30. Assembly unit; 31. First mounting plate; 32. Second mounting plate; 321. Limiting stop bar; 33. Third mounting plate; 331. Limiting groove; 34. Claw; 40. Locking assembly; 41. Locking wedge block; 411. First locking surface; 412. First guide surface; 42. Limiting block; 43. Clamping block; 431. Second guide surface; 432. Second locking surface; 44. Limiting spring; 45. Unlocking wedge block; 451. First unlocking surface; 452. Abutting block; 453. Third guide surface; 46. Unlocking block; 461. Second unlocking surface; 47. Unlocking spring; 51. First reset column; 52. Second reset column; 53. First reset spring; 61. Second reset spring; 62. Reset baffle; 70. Third reset spring; 81. Mounting guide rod; 811. Abutting platform; 82. Fourth reset spring. Detailed Implementation

[0036] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0037] This invention discloses an assembly device for an internal component 12 of an earphone charging case, used for assembling the case body 10 and the internal component 12. The case body 10 includes a receiving cavity 11, and the internal component 12 is placed in the receiving cavity 11. The assembly device for the internal component 12 of the earphone charging case includes a base plate 20, on which a first mounting position S1 and a second mounting position S2 are sequentially arranged along a first direction D1; a fixing unit 21 is disposed at the first mounting position S1, and the fixing unit 21 is used to fix the case body 10; an assembly unit 30 is disposed at the second mounting position S2, and the assembly unit 30 includes a first mounting plate 31, a second mounting plate 32, a third mounting plate 33, and a latch 34. The first mounting plate 31 is movably disposed on the base plate 20 along the first direction D1, the second mounting plate 32 is connected to the first mounting plate 31, and the third mounting plate 33 is movably disposed on the base plate 20. The first mounting plate 31 and the third mounting plate 33 are movable along the height direction of the second mounting plate 32 and are connected to the third mounting plate 33. When not assembled, both the first mounting plate 31 and the third mounting plate 34 are away from the box body 10. When assembled, the assembly unit 30 includes a first engagement state and a second engagement state. When the assembly unit 30 is in the first engagement state, the first mounting plate 31 moves toward the box body 10 along the first direction D1, and the third mounting plate 33 moves toward the box body 10 along the height direction of the second mounting plate 32, causing the third mounting plate 34 to extend into the receiving cavity 11. When the assembly unit 30 is in the second engagement state, the second mounting plate 32 moves toward the side away from the box body 10 along the first direction D1, and drives the third mounting plate 34 to engage the internal component 12 and the box body 10.

[0038] It should be noted that the earphone charging case body 10 and internal components 12 shown in the following figures are schematic diagrams for understanding the scheme only, and are not their actual structures.

[0039] Reference Figure 1As shown, the assembly device for the internal components 12 of the earphone charging case of the present invention has a base plate 20 for supporting various components. A first mounting position S1 and a second mounting position S2 are sequentially arranged on the base plate 20 along a first direction D1. A fixing unit 21 is disposed on the first mounting position S1 for fixing the case body 10. Preferably, the fixing unit 21 is configured as an accommodating space adapted to the case body 10 to securely and stably fix the case body 10. An assembly unit 30 is disposed on the second mounting position S2. The assembly unit 30 includes a first mounting plate 31, a second mounting plate 32, a third mounting plate 33, and a latch 34. The first mounting plate 31 is movable along the first direction D1 on the base plate 20 to facilitate the assembly and fastening between the internal components 12 and the case body 10. The first mounting plate 31 is driven by an external driving source, such as by manual pushing, robotic arm driving, or a linear actuator such as a cylinder. Preferably, a slider and a slide rail are provided between the first mounting plate 31 and the base plate 20, which can guide the movement of the first mounting plate 31 and improve structural stability and ensure assembly quality. The second mounting plate 32 is connected to the first mounting plate 31. The second mounting plate 32 provides space for the latch 34 in the height direction to ensure that the latch 34 can engage without colliding with the fixing unit 21 or the box 10. The second mounting plate 32 and the first mounting plate 31 can be integrally formed or separate structures. When the second mounting plate 32 and the first mounting plate 31 are separate structures, they can be fixedly connected or connected relative to each other. The third mounting plate 33 is movable along the height direction of the second mounting plate 32 and is driven by an external drive source, such as by manual pushing or by a linear actuator such as a cylinder. Preferably, a slider and a slide rail are provided between the third mounting plate 33 and the second mounting plate 32, which can guide the movement of the third mounting plate 33 and improve structural stability and ensure assembly quality. The latch 34 is connected to the third mounting plate 33 to fasten the internal component 12 and the housing 10. Preferably, the latch 34 is a structure composed of a first latch, a second latch, and a third latch, which are integrally formed and connected sequentially. The first latch is connected to the third mounting plate 33, and both the first and third latches are located on the same side of the second latch. A flexible component, such as a sponge, is provided on the third latch. This structure allows for effective insertion into the narrow receiving cavity 11 to fasten the internal component 12, while avoiding damage to the internal component 12 during assembly, thus ensuring assembly quality and efficiency. Preferably, the first, second, and third latches of the latch 34 are provided in two sets to apply force to the internal component 12 more evenly, so that it can be assembled with the box 10 accurately and without damage, ensuring assembly accuracy and quality.

[0040] Reference Figure 2 As shown, when not assembled, the first mounting plate 31 and the latch 34 are both far from the housing 10 to facilitate loading and unloading by other devices or personnel, ensuring high efficiency of the entire assembly. During assembly, the assembly unit 30 includes a first engaging state and a second engaging state. (Refer to...) Figure 3 As shown, when the assembly unit 30 is in the first fastening state, the first mounting plate 31 moves towards the box body 10 along the first direction D1, and the third mounting plate 33 moves towards the box body 10 along the height direction of the second mounting plate 32, causing the latch 34 to extend into the receiving cavity 11. When the assembly unit 30 is in the second fastening state, the second mounting plate 32 moves away from the box body 10 along the first direction D1, and drives the latch 34 to fasten the internal component 12 and the box body 10. It should be noted that when the first mounting plate 31 and the second mounting plate 32 are integrally formed or fixedly connected, the first mounting plate 31 and the second mounting plate 32 can be driven simultaneously by only one drive source, and the switching between the first fastening state and the second fastening state can be achieved simply by removing the drive source. Given that the two can move relative to each other, two driving sources can be set to drive them separately. At this time, the state can be switched by either removing the drive of the second mounting plate 32 or removing the drive of both mounting plates at the same time.

[0041] The headphone charging case internal component 12 assembly device of the present invention achieves the assembly of the headphone charging case body 10 and internal component 12 by setting a fixing unit 21 and an assembly unit 30 in cooperation. During assembly, only three actions are needed: controlling the first mounting plate 31 to move relatively closer to the body 10, controlling the latch 34 to move relatively closer to the body 10, and controlling the second mounting plate 32 to move relatively away from the body 10 after the latch 34 extends into the body 10. This achieves rapid assembly of the body 10 and internal component 12. The entire device has a simple structure. While ensuring assembly efficiency, the components of the assembly unit 30 cooperate with each other, and the latch 34 extends into the receiving cavity 11 of the body 10 to fasten the internal component 12 and the body 10, effectively preventing damage to the body 10 or internal component 12 during assembly.

[0042] In some embodiments of the headphone charging case internal component 12 assembly device of the present invention, the assembly unit 30 further includes a locking component 40, which is disposed between the fixing unit 21 and the first mounting plate 31. The locking component 40 provides pressure retention for the case body 10 and the internal component 12 after they are fastened together, ensuring assembly quality; it also saves some of the driving energy required for pressure retention. The limited location effectively improves the space utilization of the entire device. Specifically, refer to... Figure 4 and Figure 5 As shown, the locking assembly 40 includes a locking wedge block 41 and two locking limiting components. The locking wedge block 41 is connected to the first mounting plate 31. The locking wedge block 41 includes a first locking surface 411 and a first guide surface 412. The locking wedge block 41 is used to cooperate with the locking limiting components to achieve limiting and locking of the first mounting plate 31. Its first locking surface 411 is used to cooperate with the locking limiting components to provide the support required for limiting and locking; the first guide surface 412 is used to open the locking limiting components. Preferably, the first locking surface 411 is perpendicular to the axis of the locking wedge block 41, and the first guide surface 412 forms an acute angle with the axis of the locking wedge block 41 facing the first mounting plate 31, that is, the locking wedge block 41 forms an arrow-shaped structure to better achieve locking and limiting. The number of the two surfaces of the locking wedge block 41 can be set according to actual needs, such as one of each or two of each. Two locking and limiting components are arranged opposite each other on both radial sides of the locking wedge block 41. The position of the locking and limiting components can be set according to actual needs, such as setting them on the base plate 20, or setting the two locking and limiting components sequentially along the height direction, etc. Each locking and limiting component includes a limiting block 42 and a clamping block 43. The limiting block 42 is fixedly set, and a limiting spring 44 is provided between the limiting block 42 and the clamping block 43. The two ends of the limiting spring 44 abut against the limiting block 42 and the clamping block 43 respectively, and cause the clamping block 43 to abut against the other clamping block 43. The clamping block 43 includes a second guide surface 431 adapted to the first guide surface 412 and a second locking surface 432 adapted to the first locking surface 411. With this structure, the locking wedge block 41 can be used to effectively limit and lock the first mounting plate 31. Specifically, refer to Figure 6 As shown, when the assembly unit 30 is in the first engaging state, the first guide surface 412 abuts against the second guide surface 431, causing the clamping block 43 to separate. That is, when the first mounting plate 31 moves towards the box body 10, the first guide surface 412 abuts against the second guide surface 431, causing the clamping block 43 to compress the limiting spring 44 under the action of the two guide surfaces, thereby moving the two clamping blocks 43 away from each other, allowing the locking wedge block 41 to pass through. (Refer to...) Figure 7As shown, when the assembly unit 30 is in the second locking state, the first locking surface 411 abuts against the second locking surface 432, preventing the first mounting plate 31 from moving away from the box body 10 along the first direction D1. Due to the guide surface, the locking wedge block 41 can smoothly move the two clamping blocks 43 away from each other and pass through, and the movement of the first mounting plate 31 towards the box body 10 is not hindered before the locking wedge block 41 contacts the fixing unit 21. When the assembly unit 30 is in the second locking state, the clamping blocks 43 lose the force of the first guide surface 412 and move closer to each other again under the action of the limiting spring 44, and the second locking surface 432 abuts against the first locking surface 411, thereby limiting the displacement of the locking wedge block 41 and the first mounting plate 31. When the first mounting plate 31 and the second mounting plate 32 are integral or fixedly connected, the second mounting plate 32 is also limited, allowing the drive for the first mounting plate 31 and the second mounting plate 32 to be removed, saving energy while maintaining pressure between the internal components 12 and the housing 10, ensuring assembly quality. When the two mounting plates can move relative to each other, the drive for the first mounting plate 31 can also be removed, thus saving energy.

[0043] Furthermore, in some embodiments of the assembly device for the internal component 12 of the earphone charging case described in this invention, the locking component 40 further includes an unlocking wedge 45, wherein the locking wedge 41 is movable along the first direction D1, and the unlocking wedge 45 includes a third guide surface 453 and a first unlocking surface 451. Preferably, the third guide surface 453 and the first unlocking surface 451 of the unlocking wedge 45 can be set according to the number of surfaces of the locking wedge 41, and the number of surfaces of the third guide surface 453 and the first unlocking surface 451 is equal to the number of surfaces of the locking wedge 41. Preferably, the extension direction of the normal of the first unlocking surface 451 is perpendicular to the first direction D1; the third guide surface 453 and the axis of the unlocking wedge 45 facing the first mounting plate 31 form an acute angle. The locking limiting component further includes an unlocking block 46, which is fixedly connected to the clamping block 43, and the unlocking block 46 includes a second unlocking surface 461. Considering that after assembling an earphone charging case, although the latch 34 can be relatively far away from the case body 10, the presence of the locking wedge block 41 and the locking limiting component means that the latch 34 is still directly above the fixing unit 21. This inevitably affects the unloading and loading of the earphone charging case, causing unnecessary reduction in assembly efficiency. Therefore, by setting an unlocking wedge block 45 to unlock the limiting position of the first mounting plate 31, it can be relatively far away from the fixing unit 21, thereby providing more space for the unloading and loading of the components to be assembled, ensuring assembly efficiency. Specifically, the first unlocking surface 451 of the unlocking wedge block 45 and the second unlocking surface 461 of the unlocking block 46 cooperate to achieve unlocking. The unlocking wedge block 45 includes a separated state and an unlocked state. The unlocking block 46 and the clamping block 43 are fixedly connected, which can effectively realize linkage, thereby unlocking the limiting position of the clamping block 43 on the locking wedge block 41. Preferably, the unlocking block 46 and the clamping block 43 are integrally formed to improve structural strength and stability. Preferably, the planes containing the unlocking wedge block 45 and the two unlocking blocks 46, and the planes containing the locking wedge block 41 and the two clamping blocks 43, are parallel to each other to ensure efficient space utilization. (Refer to...) Figure 8 As shown, when the unlocking wedge block 45 is in the separated state, the unlocking wedge block 45 is separated from the unlocking block 46. (Refer to...) Figure 9As shown, when the unlocking wedge block 45 is in the unlocked state, it moves towards the box 10 along the first direction D1. The second unlocking surface 461 slides along the third guide surface 453 and abuts against the first unlocking surface 451, causing the first locking surface 411 to separate from the second locking surface 432. Preferably, the second unlocking surface 461 is an arc surface to reduce friction, improve unlocking efficiency, and thus improve assembly efficiency. By setting the third guide surface 453, the unlocking block 46 can smoothly move away from the third guide surface 453 and abut against the first unlocking surface 451, thereby unlocking the first mounting plate 31. With this structure, the first mounting plate 31 can be effectively unlocked without having to pull the clamping block 43 with an additional device, effectively reducing the size of the entire device and improving space utilization; it also facilitates quick unlocking and improves assembly efficiency. The unlocking wedge block 45 can be driven by a drive source such as a cylinder.

[0044] Furthermore, in some embodiments of the assembly device for the internal component 12 of the earphone charging case described in this invention, the unlocking wedge block 45 is provided with an abutment block 452 extending radially therefrom, and the locking assembly 40 further includes an unlocking spring 47, which is located between the abutment block 452 and the fixing unit 21. One end of the unlocking spring 47 is fixedly disposed, and the other end abuts against the abutment block 452. Specifically, the unlocking spring 47 includes a first unlocking spring state and a second unlocking spring state. When the unlocking spring 47 is in the first unlocking spring state, the abutment block 452 compresses the unlocking spring 47, causing the unlocking wedge block 45 to move from the separated state to the unlocked state. When the unlocking spring 47 is in the second unlocking spring state, the unlocking spring 47 drives the abutment block 452 to move along the first direction D1, causing the unlocking wedge block 45 to move from the unlocked state to the separated state. The arrangement of the abutment block 452 and the unlocking spring 47 effectively resets the unlocking wedge block 45, saving energy consumption of the drive source during the reset of the unlocking wedge block 45. It also allows the unlocking wedge block 45 to advance and unlock slowly, reducing the possibility of hard contact with other components and ensuring the service life of each component. Preferably, two sets of abutment blocks 452 and unlocking springs 47 are provided to ensure structural stability and to provide uniform elastic force to the unlocking wedge block 45, ensuring its service life.

[0045] Furthermore, refer to Figure 10As shown, in some embodiments of the assembly device for the internal component 12 of the earphone charging case of the present invention, the limiting block 42 is connected to the base plate 20. The base plate 20 has an unlocking guide groove adapted to the unlocking wedge block 45. The unlocking wedge block 45 is disposed in the unlocking guide groove. The two ends of the unlocking spring 47 abut against the groove wall of the unlocking guide groove and the abutment block 452, respectively. The unlocking guide groove includes a second unlocking guide groove 23 adapted to the abutment block 452 and a first unlocking guide groove 22 adapted to the body of the unlocking wedge block 45, so as to better guide and limit it. Through this structure, the space of the base plate 20 can be reasonably utilized, reducing the space required for the entire device in the height direction, thereby improving the space utilization rate of the entire device.

[0046] Reference Figure 11 As shown, in some embodiments of the assembly device for the internal component 12 of the earphone charging case of the present invention, the assembly unit 30 further includes a first reset component. The first reset component includes a first reset post 51, a second reset post 52, and a first reset spring 53. The first reset post 51 is connected to the first mounting plate 31, the second reset post 52 is connected to the base plate 20, and the two ends of the first reset spring 53 are respectively connected to the first reset post 51 and the second reset post 52. During assembly, the first reset post 51 and the second reset post 52 stretch the first reset spring 53. When not assembling, the first reset spring 53 drives the first mounting plate 31 to move away from the housing 10 along the first direction D1. This structure allows the first mounting plate 31 to move away from the housing 10 under the action of the first reset component after assembly, saving the energy required for additional driving. It also provides a certain force to the latch 34 in the second snap-fit ​​state, ensuring the internal component 12 and the housing 10 snap-fit ​​together and improving the assembly quality.

[0047] In some embodiments of the assembly device for the internal component 12 of the earphone charging case described in this invention, the second mounting plate 32 is movably disposed on the first mounting plate 31 along the first direction D1. Preferably, a slider and a slide rail are provided between them, which can improve structural stability and provide guidance for movement. The assembly unit 30 also includes a second reset assembly, which includes a second reset spring 61 and a reset baffle 62. The reset baffle 62 is disposed at one end of the first mounting plate 31 near the housing 10, and the second reset spring 61 is disposed between the reset baffle 62 and the second mounting plate 32, with both ends of the second reset spring 61 abutting against the reset baffle 62 and the second mounting plate 32, respectively. Specifically, refer to... Figure 12 and Figure 13As shown, when the assembly unit 30 is in the first engaging state, the second mounting plate 32 moves along the first direction D1 and compresses the second return spring 61. (Refer to...) Figure 14 and Figure 15 As shown, when the assembly unit 30 is in the second locking state, the second return spring 61 drives the second mounting plate 32 to move along the first direction D1 toward the side away from the box 10, and drives the latch 34 to lock the internal component 12 and the box 10 together. This structure allows assembly to be performed in a smaller space, saving the travel distance required for the first mounting plate 31; furthermore, it avoids hard contact between the latch 34 and the component to be assembled, ensuring assembly quality. Preferably, two sets of the second reset components are provided, respectively disposed on both sides of the second mounting plate 32, to improve structural stability. Preferably, the second mounting plate 32 includes a vertical first plate and a horizontally disposed second plate; this structure increases the contact area with the first mounting plate 31 and improves structural stability.

[0048] Reference Figure 14 As shown, in some embodiments of the assembly device for the internal components 12 of the earphone charging case of the present invention, the assembly unit 30 further includes a third return spring 70. The third return spring 70 is disposed between the second mounting plate 32 and the third mounting plate 33, with one end of the third return spring 70 fixedly disposed and the other end abutting against the third mounting plate 33. Specifically, when the second mounting plate 32 includes a second plate body, the end of the third return spring 70 away from the third mounting plate 33 abuts against the second plate body; when only a vertical second mounting plate 32 is provided, the end of the third return spring 70 away from the third mounting plate 33 can abut against the second mounting plate 32 or the first mounting plate 31. When the assembly unit 30 is in the first fastening state, the third mounting plate 33 moves towards the case 10 along the height direction of the second mounting plate 32 and compresses the third return spring 70; when not assembled, the third return spring 70 drives the third mounting plate 33 away from the case 10 along the height direction of the second mounting plate 32. By setting the third reset spring 70, the third mounting plate 33 can be effectively reset after assembly, and the hard contact between the third mounting plate 33 and other mounting plates, or the latch 34 and the bottom of the receiving cavity 11 of the box body 10 is avoided, thus ensuring the service life and assembly quality of the device.

[0049] Reference Figure 16As shown, in some embodiments of the headphone charging case internal component 12 assembly device of the present invention, the assembly unit 30 further includes a mounting guide rod 81 and a fourth return spring 82. The mounting guide rod 81 is disposed at one end of the third mounting plate 33 near the case body 10. The latch 34 is disposed on the mounting guide rod 81 and is movable along the first direction D1. An abutment platform 811 is provided at the end of the mounting guide rod 81 away from the third mounting plate 33. The fourth return spring 82 is disposed between the abutment platform 811 and the latch 34, and both ends of the fourth return spring 82 abut against the abutment platform 811 and the latch 34, respectively. Without a second reset assembly, the fourth return spring 82 and other components effectively prevent hard contact between the latch 34 and the component to be assembled, ensuring the device's service life and assembly quality. With a second reset assembly, the device's service life and assembly quality can be further guaranteed. Especially after assembly is completed, when each mounting plate is reset and moved away from the box 10, due to the setting of components such as the fourth reset spring 82, the drive for each mounting plate can be directly removed, and the plate can be reset by the corresponding reset spring. This saves energy and avoids damage to the assembled components by the latch 34.

[0050] Reference Figure 15 and Figure 16 As shown, in some embodiments of the assembly device for the internal components 12 of the earphone charging case of the present invention, a limiting stop bar 321 is provided on the second mounting plate 32, and a limiting groove 331 adapted to the limiting stop bar 321 is provided on the third mounting plate 33. The limiting stop bar extends into the limiting groove 331 and forms a limit on the third mounting plate 33. Without the third return spring 70, the limiting stop bar 321 can prevent collisions between the third mounting plate 33 and other mounting plates, as well as between the latch 34 and the bottom of the receiving cavity 11, ensuring the service life and assembly quality of the device. With the third return spring 70 provided, structural stability can be improved, further ensuring the service life and assembly quality of the device.

[0051] The working principle of the assembly device for the internal components 12 of the earphone charging case described in this invention is as follows:

[0052] First, the housing 10 and internal components 12 to be assembled are fixed in the fixing unit 21. Next, the mounting plates are moved toward the housing 10 by a drive source, causing the latches 34 to extend into the receiving cavity 11, and forming a limiting lock between the locking wedge block 41 and the clamping block 43. Then, the remaining drive sources are removed, leaving only the drive source for the third mounting plate 33, preventing the latches 34 from moving away from the housing 10. At this time, the second mounting plate 32, under the action of the second return spring 61, drives the latches 34 to fasten the internal components 12 to the housing 10. Finally, after ensuring the fastening is secure, the limiting lock of the first mounting plate 31 is released by unlocking the wedge block 45, and the drive for the third mounting plate 33 is removed. Under the action of the first return spring 53, the third return spring 70, and other components, each mounting plate is reset, facilitating unloading and assembly of the next set of components.

[0053] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. An assembly device for internal components of an earphone charging case, used for assembling the body of the earphone charging case with internal components, the body including a receiving cavity, the internal components being placed within the receiving cavity, characterized in that, The internal component assembly device of the earphone charging case includes: A base plate, wherein a first mounting position and a second mounting position are sequentially provided along a first direction; A fixing unit is disposed at the first mounting position, and the fixing unit is used to fix the box body; An assembly unit is disposed at the second mounting position. The assembly unit includes a first mounting plate, a second mounting plate, a third mounting plate, and a latch. The first mounting plate is movable along the first direction and is disposed on the base plate. The second mounting plate is connected to the first mounting plate. The third mounting plate is movable along the height direction of the second mounting plate and is disposed on the second mounting plate. The latch is connected to the third mounting plate. When not assembled, the first mounting plate and the latch are both away from the box body. When assembled, the assembly unit includes a first latching state and a second latching state. When the assembly unit is in the first latching state, the first mounting plate moves toward the box body along the first direction, and the third mounting plate moves toward the box body along the height direction of the second mounting plate, causing the latch to extend into the receiving cavity. When the assembly unit is in the second latching state, the second mounting plate moves toward the side away from the box body along the first direction, and drives the latch to latch the internal components and the box body.

2. The assembly device for internal components of the earphone charging case according to claim 1, characterized in that: The assembly unit further includes a locking assembly disposed between the fixing unit and the first mounting plate; The locking assembly includes a locking wedge block and two locking limiting components. The locking wedge block is connected to the first mounting plate and includes a first locking surface and a first guide surface. The two locking limiting components are arranged opposite to each other on both radial sides of the locking wedge block. Each locking limiting component includes a limiting block and a clamping block. The limiting block is fixedly installed. A limiting spring is provided between the limiting block and the clamping block. The two ends of the limiting spring abut against the limiting block and the clamping block respectively, and cause the clamping block to abut against the other clamping block. The clamping block includes a second guide surface adapted to the first guide surface and a second locking surface adapted to the first locking surface. When the assembly unit is in the first fastening state, the first guide surface abuts against the second guide surface, causing the clamping block to separate; when the assembly unit is in the second fastening state, the first locking surface abuts against the second locking surface, preventing the first mounting plate from moving along the first direction toward the side away from the box body.

3. The assembly device for internal components of the earphone charging case according to claim 2, characterized in that: The locking assembly further includes an unlocking wedge block, which is configured to move along the first direction, and the unlocking wedge block includes a third guide surface and a first unlocking surface; the locking limiting component further includes an unlocking block, which is fixedly connected to the clamping block, and the unlocking block includes a second unlocking surface; The unlocking wedge block includes a separated state and an unlocked state. When the unlocking wedge block is in the separated state, the unlocking wedge block is separated from the unlocking block. When the unlocking wedge is in the unlocked state, the unlocking wedge moves toward the box body side along the first direction, and the second unlocking surface slides along the third guide surface and abuts against the first unlocking surface, so that the first locking surface separates from the second locking surface.

4. The assembly device for internal components of the earphone charging case according to claim 3, characterized in that: The unlocking wedge block is provided with an abutment block extending radially therefrom. The locking assembly also includes an unlocking spring, which is located between the abutment block and the fixing unit. One end of the unlocking spring is fixedly disposed and the other end abuts against the abutment block. The unlocking spring includes a first unlocking spring state and a second unlocking spring state. When the unlocking spring is in the first unlocking spring state, the abutment block compresses the unlocking spring and causes the unlocking wedge block to move from the separated state to the unlocked state. When the unlocking spring is in the second unlocking spring state, the unlocking spring drives the abutment block to move along the first direction and causes the unlocking wedge block to move from the unlocked state to the separated state.

5. The assembly device for internal components of the earphone charging case according to claim 4, characterized in that: The limiting block is connected to the base plate, and the base plate is provided with an unlocking guide groove adapted to the unlocking wedge block. The unlocking wedge block is disposed in the unlocking guide groove, and the two ends of the unlocking spring abut against the groove wall and the abutment block, respectively.

6. The assembly device for internal components of the earphone charging case according to claim 1, characterized in that: The assembly unit further includes a first reset assembly, which includes a first reset column, a second reset column, and a first reset spring; the first reset column is connected to the first mounting plate, the second reset column is connected to the base plate, and the two ends of the first reset spring are respectively connected to the first reset column and the second reset column. During assembly, the first and second reset columns stretch the first reset spring; when not assembled, the first reset spring drives the first mounting plate to move away from the housing along the first direction.

7. The assembly device for internal components of the earphone charging case according to claim 1, characterized in that: The second mounting plate is movable along the first direction and is mounted on the first mounting plate; the assembly unit further includes a second reset assembly, the second reset assembly includes a second reset spring and a reset baffle, the reset baffle is disposed at one end of the first mounting plate near the housing, the second reset spring is disposed between the reset baffle and the second mounting plate, and the two ends of the second reset spring abut against the reset baffle and the second mounting plate respectively; When the assembly unit is in the first fastening state, the second mounting plate moves along the first direction and compresses the second return spring; when the assembly unit is in the second fastening state, the second return spring drives the second mounting plate to move along the first direction toward the side away from the box body, and drives the latch to fasten the internal components and the box body.

8. The assembly device for internal components of the earphone charging case according to claim 1, characterized in that: The assembly unit also includes a third return spring, which is disposed between the second mounting plate and the third mounting plate, with one end of the third return spring fixedly disposed and the other end abutting against the third mounting plate; When the assembly unit is in the first fastening state, the third mounting plate moves toward the box along the height direction of the second mounting plate and compresses the third return spring; when not assembled, the third return spring drives the third mounting plate away from the box along the height direction of the second mounting plate.

9. The assembly device for internal components of the earphone charging case according to claim 1 or 7, characterized in that: The assembly unit further includes a mounting guide rod and a fourth return spring. The mounting guide rod is disposed at one end of the third mounting plate near the box body. The latch is disposed on the mounting guide rod and is movable along the first direction. An abutment is provided at one end of the mounting guide rod away from the third mounting plate. The fourth return spring is disposed between the abutment and the latch, and both ends of the fourth return spring abut against the abutment and the latch, respectively.

10. The assembly device for internal components of the earphone charging case according to claim 1 or 8, characterized in that: The second mounting plate is provided with a limit stop bar, and the third mounting plate is provided with a limit groove adapted to the limit stop bar. The limit stop bar extends into the limit groove and forms a limit on the third mounting plate.

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