Telescopic line module and charging equipment

Abstract

The utility model discloses a telescopic line module and a charging device, the telescopic line module comprises a housing, a winding roll rotatably installed in the housing, a telescopic line wound on the winding roll, a locking structure rotatably installed in the housing, and an elastic sheet arranged in the housing, and the locking structure is located at one side of the winding roll and is used for positioning the winding roll; the locking structure comprises a locking piece rotationally connected with the shell, a locking protrusion and an extrusion part are arranged on the locking piece, a locking groove matched with the locking protrusion is formed in the winding roll, the locking protrusion is located at one end of the locking piece, the extrusion part is located at or close to the other end of the locking piece, and the extrusion part is arranged at the end, away from the winding roll, of the locking piece. The pressing part extrusion part abuts against the elastic piece, and the pressing part extrusion part extrudes the elastic piece when rotating relative to the shell. The extrusion part abuts against the elastic piece, the compactness of the structure can be improved, meanwhile, the thickness of the elastic piece is relatively small, and the occupied space in the shell can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of cable storage technology, and in particular to a telescopic cable module and charging device. Background Technology

[0002] Currently, products using retractable cords are becoming increasingly common in people's daily lives, such as chargers, power banks, clotheslines, and tow ropes. Retractable cords have a telescopic function, allowing people to choose to pull out the cord to the appropriate length when in use and store it inside the casing when not in use, thus avoiding the cord taking up space outside the casing when not in use.

[0003] Retractable cord products typically incorporate an internal locking mechanism to position the cord at the desired length after it has been extended, preventing it from retracting back into the housing during use. However, existing locking mechanisms usually employ magnetic attraction for resetting. This involves placing magnetic components on both the locking mechanism and the housing, using magnetic force to move the locking mechanism and achieve resetting. However, placing magnetic components on both the locking mechanism and the housing occupies a significant amount of space within the housing, hindering the installation of other components and impeding product miniaturization. Utility Model Content

[0004] In view of this, the present invention provides a retractable cable module and a charging device to solve the above problems.

[0005] On one hand, this application provides a telescopic cable module, including a housing, a reel rotatably mounted in the housing, a telescopic cable wound on the reel, a locking structure rotatably mounted in the housing, and a spring piece disposed in the housing. The locking structure is located on one side of the reel and is used to position the reel. The locking structure includes a locking member rotatably connected to the housing. The locking member has a locking protrusion and a pressing part. The reel has a locking groove that cooperates with the locking protrusion. The locking protrusion is located at one end of the locking member. The pressing part is located at or near the other end of the locking member. The pressing part is located at the end away from the reel. The pressing part abuts against the spring piece, and the pressing part presses against the spring piece when it rotates relative to the housing.

[0006] On the other hand, this application also provides a charging device, including a charging module and a telescopic cable module as described above, wherein the charging module is located on the side of the cable reel away from the locking structure and is electrically connected to the telescopic cable.

[0007] The telescopic cable module provided by this utility model features a pressing part on the locking member, which abuts against a spring. When the locking member rotates relative to the housing, the pressing part compresses the spring, causing it to deform and generate elastic force. Under the elastic force of the spring, the locking member can rotate in the opposite direction, achieving a resetting effect. The pressing part and the spring abut against each other inside the housing improve the compactness of the structure. Simultaneously, the relatively small thickness of the spring helps reduce the space occupied by the spring and locking member in the direction from the locking protrusion to the pressing part, facilitating the arrangement of other components inside the housing and reducing the overall size of the product. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of a charging device provided in an embodiment of the present invention;

[0009] Figure 2 for Figure 1 An exploded view of the charging device shown;

[0010] Figure 3 for Figure 2 The diagram shows the assembly of the charging device with the casing and charging module removed.

[0011] Figure 4 for Figure 3 The diagram shows the assembly of the locking structure and the spring.

[0012] Figure 5 for Figure 4 A schematic diagram of the locking component shown in the figure;

[0013] Figure 6 for Figure 5 A schematic diagram of the gear shown;

[0014] Figure 7 for Figure 5 A schematic diagram of the structure of the spring shown;

[0015] Figure 8 for Figure 2 The diagram shows the assembly of the housing, bracket, locking structure, and spring clip.

[0016] Figure 9 for Figure 8 Assembly diagram with the bracket removed;

[0017] Figure 10 for Figure 2 The diagram shows an exploded view of the winding reel, separator, and fixed shaft.

[0018] In the diagram: 100, charging equipment; 10, telescopic cable module; 12, housing; 14, cable reel; 16, telescopic cable; 18, charging module; 20, locking structure; 22, spring; 24, extrusion section; 26, locking element; 28, end face; 30, bushing; 32, mounting shaft; 34, locking protrusion; 36, locking groove; 40, gear; 42, locking groove; 44, unlocking groove; 46, lever; 48 50. Block; 52. Contact surface; 53. Recessed part; 54. Straight section; 56. Extension section; 58. Bending part; 60. Mounting column; 62. Mounting plate; 64. Bracket; 66. Accommodating space; 68. Opening; 70. Winding body; 72. Receiving part; 74. Receiving cavity; 75. Protrusion; 76. Enclosure; 78. Notch; 80. Connecting part; 82. Fixed shaft; 84. Cover plate; 86. Divider plate. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0020] It should be noted that all directional indicators (such as up, down, left, right, front, back, inside, outside, top, bottom, etc.) in the embodiments of this utility model are only used to explain the relative positional relationship between the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0021] It should also be noted that when a component is referred to as "fixed to" or "set on" another component, the component may be directly on the other component or there may be an intervening component present. When a component is referred to as "connected to" another component, it may be directly connected to the other component or there may be an intervening component present.

[0022] Please see Figures 1 to 10 An embodiment of this utility model provides a telescopic cable module 10, including a housing 12, a reel 14 rotatably installed inside the housing 12, and a telescopic cable 16 wound on the reel 14. When the telescopic cable 16 is subjected to an outward pulling force, the telescopic cable 16 moves outward and drives the reel 14 to rotate in one direction, so that the telescopic cable 16 extends a certain length for the user to use. When the reel 14 rotates in the opposite direction, it will drive the telescopic cable 16 to retract, so that the telescopic cable 16 is rewound on the reel 14, thereby storing it inside the housing 12, reducing its overall volume when not in use, and making it convenient to store and carry.

[0023] The retractable cord module 10 can be used for electronic products such as chargers or power banks, in which case the retractable cord 16 is a wire connecting to electronic devices such as mobile phones and tablets. Alternatively, the retractable cord module 10 can also be used for everyday items such as clotheslines or tow ropes, in which case the retractable cord 16 is a rope. This article uses the retractable cord module 10 used in charging device 100 as an example for explanation.

[0024] The charging device 100 includes a retractable cable module 10 and a charging module 18. The charging module 18 is located inside the housing 12 and is electrically connected to the retractable cable 16 of the retractable cable module 10. When charging an electronic device is needed, the retractable cable 16 can be pulled out to connect to the electronic device; when not in use, the retractable cable 16 can be stored inside the housing 12. Understandably, the charging device 100 can be a self-contained power bank or a charger with prongs that requires an external power source.

[0025] The housing 12 contains a locking structure 20 and a spring piece 22. The locking structure 20 includes a locking member 26 rotatably connected to the housing 12, which can rotate relative to the housing 12. The locking structure 20 is located on one side of the reel 14 and is used to position the reel 14. The spring piece 22 is connected to both the housing 12 and the locking member 26. When the telescopic cable 16 is pulled outward, the reel 14 squeezes the locking member 26, causing the locking member 26 to rotate relative to the housing 12. This deforms the spring piece 22, generating elasticity. When the telescopic cable 16 is pulled out to the appropriate length and the squeezing of the reel 14 on the locking member 26 disappears, the locking member 26 can move in the opposite direction under the elastic force of the spring piece 22, thus achieving a reset effect and positioning the reel 14. This positions the telescopic cable 16 at the appropriate length, preventing the reel 14 from rotating in the winding direction during use, i.e., preventing the telescopic cable 16 from retracting during use.

[0026] The locking member 26 has a locking protrusion 34 at one end near the reel 14, and a locking groove 36 is provided on the reel 14 corresponding to the locking protrusion 34. When the locking member 26 rotates relative to the housing 12, the locking protrusion 34 can be inserted into or removed from the locking groove 36. When the locking member 26 locks the reel 14 in the winding direction, the locking protrusion 34 is located in the locking groove 36. When the locking member 26 releases the lock on the reel 14, the locking protrusion 34 is removed from the locking groove 36.

[0027] The locking member 26 is provided with a pressing part 24. The locking protrusion 34 is located at one end of the locking member 26, and the pressing part 24 is located at the other end of the locking member 26. Alternatively, the pressing part 24 is located on one side of the locking member 26 and close to the other end of the locking member 26. The pressing part 24 abuts against the spring piece 22, and when the pressing part 24 rotates relative to the housing 12, it presses the spring piece 22, thereby deforming the spring piece 22 and generating elastic force to drive the locking member 26 to reset. When the telescopic cable 16 is pulled outward, the reel 14 rotates in the cable exit direction and pushes the locking member 26 to rotate, squeezing the spring 22 to generate elastic force. When the telescopic cable 16 is pulled out to the required length, the locking member 26 can rotate in the opposite direction under the action of the spring 22, and the locking protrusion 34 is inserted into the locking groove 36. At this time, the locking structure 20 forms a locking effect on the reel 14 in the cable take-up direction, preventing the reel 14 from rotating in the cable take-up direction, thereby preventing the telescopic cable 16 from retracting during use. By making the squeezing part 24 abut against the spring 22, the compactness of the structure can be improved. At the same time, the spring 22 is a sheet structure with a relatively small thickness, which can reduce the space occupied by the locking member 26 and the spring 22 in the direction from the locking protrusion 34 to the squeezing part 24, that is, the extension direction of the locking member 26. This facilitates the arrangement of other components inside the housing 12 and also helps to reduce the overall size of the charging device 100, making it convenient for storage and carrying.

[0028] In an optional example, the locking protrusion 34 is provided at one end of the locking member 26, the pressing part 24 is located between the locking protrusion 34 and the end face 28 of the locking member 26 away from the locking protrusion 34, and the pressing part 24 and the end face 28 are spaced apart. The spring piece 22 is at least partially located between the pressing part 24 and the end face 28, so that the spring piece 22 and the pressing part 24 are located on the side of the locking member 26 perpendicular to its extension direction, so as to shorten the distance between the spring piece 22 and the pressing part 24 and the winding reel 14, and make the distance between the abutting part of the spring piece 22 and the winding reel 14 smaller than the distance between the end face 28 and the winding reel 14, so as to avoid additional space occupied in the extension direction of the locking member 26 due to the setting of the spring piece 22.

[0029] The locking member 26 includes a locking end and a connecting end. The locking end is close to the reel 14 and is used to cooperate with the reel 14. The locking protrusion 34 is provided on the end face of the locking end away from the connecting end. The connecting end is located on the side of the locking end away from the reel 14 and is rotatably connected to the housing 12. The locking member 26 extends toward the reel 14 from the connecting end to the locking end. The pressing part 24 is provided on the connecting end and is spaced a certain distance from the end face 28 of the connecting end away from the locking end. The spring piece 22 is at least partially located between the pressing part 24 and the end face 28 of the connecting end, so that the pressing part 24 and the spring piece 22 are located on the side of the connecting end perpendicular to the extension direction of the locking member 26, so as to reduce the space occupied by the spring piece 22 and the locking member 26 in the extension direction.

[0030] A bushing 30 is provided on the side of the connecting end facing the housing 12. A shaft hole is formed on the inner side of the bushing 30. A mounting shaft 32 is correspondingly provided on the housing 12. The locking member 26 is movably sleeved on the outer side of the mounting shaft 32 through the shaft hole of the bushing 30, so that the locking member 26 can rotate relative to the housing 12 around the mounting shaft 32. The pressing part 24 is located on the same side of the connecting end as the bushing 30, and the pressing part 24 is located on the side of the bushing 30 away from the winding reel 14.

[0031] The extrusion part 24 is fixedly connected to the bushing 30, and the bushing 30 is connected to the middle position of the extrusion part 24. The bushing 30 can support the extrusion part 24 to enhance its strength and prevent it from deforming due to thermal expansion and contraction during the mold opening process. Optionally, the extrusion part 24, bushing 30, locking member 26, and locking protrusion 34 are integrally formed.

[0032] The locking structure 20 also includes a gear 40 rotatably mounted on the housing 12. The gear 40 is located on the Z-side of the locking member 26 in the thickness direction, and is closer to the locking protrusion 34 than the pressing part 24. The gear 40 has a locking groove 42 and an unlocking groove 44, which are arranged alternately along the circumference of the gear 40. The locking member 26 has a lever 46 and a locking block 48 at one end near the winding reel 14. The lever 46 and the locking block 48 are spaced apart and opposite to each other. The gear 40 is located between the lever 46 and the locking block 48. The lever 46 is used to push the gear 40 to rotate, thereby adjusting the position of the locking groove 42 and the unlocking groove 44. The locking block 48 is used to insert into the locking groove 42 to form a locking effect. The shape of the locking groove 42 is adapted to the shape of the locking block 48. When the locking block 48 is inserted into the locking groove 42, the gear 40 can prevent the locking block 48 from continuing to move towards the gear 40. At this time, the locking block 48 can only move towards the direction of exiting the locking groove 42. The locking structure 20 forms a locking effect on the winding reel 14 in the winding direction. The unlocking groove 44 is provided with a stop block, which can prevent the locking block 48 from being fully inserted into the unlocking groove 44. At this time, the locking block 48 can move towards the direction of the gear 40, and the locking structure 20 releases the locking of the winding reel 14 in the winding direction.

[0033] During use, the locking protrusion 34 on the locking member 26 is inserted into the locking groove 36 of the reel 14, and the locking block 48 is inserted into the locking groove 42 of the gear 40. At this time, the gear 40 can prevent the locking member 26 from rotating along the locking block 48 towards the gear 40, thus positioning the locking protrusion 34 in the locking groove 36, thereby creating a positioning effect on the reel 14. When it is time to reel in the cable, the retractable cable 16 can be pulled outward a certain distance, and the reel 14 will push the locking member 26 away from the gear 40 along the locking block 48. The direction is rotated, causing the locking protrusion 34 to disengage from the locking groove 36 and the locking block 48 to disengage from the locking groove 42. At the same time, the toggle block 46 will push the gear 40 to rotate. After the gear 40 moves to the point where the unlocking groove 44 corresponds to the locking block 48, the reel 14 will then rotate in the winding direction. At this time, the unlocking groove 44 corresponds to the locking block 48, so the gear 40 will not prevent the locking member 26 from rotating in the direction where the locking block 48 is close to the gear 40. At this time, the locking member 26 will not affect the rotation of the reel 14 in the winding direction.

[0034] In one embodiment, the pressing part 24 includes a contact surface 50 facing the spring piece 22, the spring piece 22 abutting against the contact surface 50, and the contact surface 50 is provided with a recessed part 52 and / or a protruding part. When the locking member 26 rotates relative to the housing 12, the pressing part 24 moves relative to the spring piece 22 and generates frictional force due to contact with the spring piece 22. The recessed part 52 and / or the protruding part can reduce the contact area between the contact surface 50 and the spring piece 22, thereby reducing the frictional force between the pressing part 24 and the spring piece 22 during the rotation of the locking member 26, reducing the wear of the pressing part 24 and the spring piece 22, and helping to extend the service life.

[0035] Understandably, the recessed portion 52 can be a hole or a groove, and the protruding portion can be a protrusion or a ridge. Optionally, the contact surface 50 is provided with a recessed portion 52, which does not increase the thickness of the pressing portion 24 and helps to reduce the space it occupies inside the housing 12.

[0036] The recessed portion 52 is a groove, and the groove and the pressing portion 24 extend in different directions. That is, the groove does not extend along the extending direction of the pressing portion 24, which helps to reduce the length of the groove and thus reduce the impact of the groove on the overall strength of the pressing portion 24. For example, the extending direction of the groove is perpendicular to the extending direction of the pressing portion 24.

[0037] The number of grooves is multiple, and the multiple grooves are arranged at intervals along the extension direction of the extrusion part 24 to further reduce the contact area between the contact surface 50 and the spring piece 22.

[0038] The locking member 26 includes mutually perpendicular length direction X, width direction Y, and thickness direction Z. The connecting end and the locking end are located at the two ends of the locking member 26 in the length direction X, respectively. The locking protrusion 34 is located at one end of the locking member 26 in the length direction X. The spring piece 22 is located on one side of the pressing part 24 in the length direction X. The pressing part 24 and the spring piece 22 are located on one side of the locking member 26 in the thickness direction Z. The pressing part 24 extends along the width direction Y of the locking member 26, making the pressing part 24 a long strip-shaped block structure. The groove extends along the thickness direction Z.

[0039] Understandably, the spring piece 22 being located on one side of the compression portion 24 in the length direction X can mean that the spring piece 22 is located on the side of the compression portion 24 closer to the locking protrusion 34, or it can mean that the spring piece 22 is located on the side of the compression portion 24 away from the locking protrusion 34. For example, the spring piece 22 is located on the side of the compression portion 24 away from the locking protrusion 34.

[0040] In one embodiment, the spring piece 22 includes a straight section 54, which is a flat sheet structure. The side of the spring piece facing the pressing part 24 is a plane. The contact surface 50 of the pressing part 24 is a plane with a groove. The straight section 54 and the pressing part 24 extend in the same direction. That is, both the straight section 54 and the pressing part 24 extend along the width direction Y of the locking member 26. The straight section 54 and the contact surface 50 of the pressing part 24 are in contact to ensure that the pressing part 24 can contact the spring piece 22, thereby pressing the spring piece 22 during rotation.

[0041] Optionally, the straight section 54 is a flat sheet structure, and the extrusion section 24 is a long strip block structure. The two are attached to each other, and the length of the extrusion section 24 is less than the length of the straight section 54. During the rotation of the locking member 26, the two ends of the extrusion section 24 will extrude the spring sheet 22, thereby deforming the spring sheet 22.

[0042] In another embodiment, the pressing portion 24 is located on the end face 28 of the locking member 26, and the pressing portion 24 and the locking protrusion 34 are located on the same horizontal plane. That is, along the direction perpendicular to the arrangement direction, the surfaces of the pressing portion 24, the locking member 26, and the locking protrusion 34 on one side are coplanar, thereby placing them on the same horizontal plane. This coplanar arrangement can avoid frictional interference during the rotation of the locking member 26, which could lead to problems such as uneven data cable extension and retraction and abnormal noise. The pressing portion 24 includes a contact surface 50 facing the spring piece 22. The contact surface 50 is formed on the side of the pressing portion 24 away from the locking protrusion 34, that is, the spring piece 22 is located on the side of the pressing portion 24 away from the locking protrusion 34. The spring piece 22 includes a straight section 54 that abuts against the contact surface 50. By making the spring piece 22, the pressing portion 24, and the locking protrusion 34 coplanar, it is beneficial to reduce the space occupied by the spring piece 22, the pressing portion 24, and the locking member 26 in the thickness direction Z of the locking member 26. For example, the extrusion portion 24 is integrally formed on the locking member 26, and the extrusion portion 24 can be regarded as one end of the locking member 26.

[0043] The spring clip 22 also includes extension sections 56 located at both ends of the straight section 54. The straight section 54 and the two extension sections 56 are arranged at an angle, and the two extension sections 56 extend from the straight section 54 toward the winding reel 14 in a gradually moving manner. The end of the extension section 56 away from the straight section 54 is connected to the housing 12. By providing extension sections 56 at both ends of the straight section 54, and by having the two extension sections 56 and the straight section 54 extend in different directions, excessive length in one direction is avoided. This facilitates the connection between the spring clip 22 and the housing 12, while also making full use of the space at the corner of the housing 12, so that the locking structure 20 and the spring clip 22 can be installed at the corner of the housing 12.

[0044] Understandably, the extension 56 can be a straight sheet structure or an arc-shaped sheet structure. In an optional example, both extensions 56 are straight sheet structures, with an obtuse angle between the straight section 54 and the extension 56 to prevent the extension 56 from affecting the rotation of the locking member 26.

[0045] The extension section 56 has a bend 58 at the end away from the straight section 54. The housing 12 has two spaced-apart mounting posts 60. The locking member 26 is located between the two mounting posts 60. The two ends of the spring piece 22 are respectively sleeved on the outside of the corresponding mounting post 60 through the bend 58. The structure of the spring piece 22 connecting with the housing 12 is relatively simple, which helps to reduce the difficulty of manufacturing and assembly.

[0046] Optionally, the bend 58 can be ring-shaped, U-shaped, or C-shaped, as long as it can fit over the outside of the mounting post 60.

[0047] The housing 12 includes a mounting plate 62, a locking member 26, a gear 40 and a spring 22 mounted on the mounting plate 62. The mounting plate 62 is rectangular, and the connection between its adjacent two sides forms a corner. Two mounting posts 60 are respectively provided on the adjacent two sides of the mounting plate 62, so that the locking structure 20 and the spring 22 are installed at the corner position of the mounting plate 62, making full use of the space inside the housing 12.

[0048] In one embodiment, a bracket 64 is provided inside the housing 12. The bracket 64 cooperates with the housing 12 to form an accommodating space 66. The spring piece 22 and the locking member 26 are installed in the accommodating space 66, and the pressing part 24 and the spring piece 22 are located on the side of the locking structure 20 away from the bracket 64. The bracket 64 can limit the spring piece 22 and the locking structure 20, preventing the connection between the spring piece 22 and the housing 12 from loosening due to deformation of the spring piece 22 and movement of the locking member 26, thus preventing the connection from disengaging from the housing 12. One side of the bracket 64 has an opening 68 communicating with the accommodating space 66. The opening 68 faces the winding reel 14. The locking protrusion 34 on the locking member 26 extends through the opening 68 to the outside of the bracket 64 to cooperate with the locking groove 36 on the winding reel 14. Optionally, the bracket 64 is installed at the corner of the mounting plate 62 by bolts or other fasteners.

[0049] The locking member 26 has a protrusion on the side near the bracket 64. The protrusion can reduce the contact area between the locking member 26 and the bracket 64, thereby reducing the friction between the locking member 26 and the bracket 64 when rotating, making it easier for the locking member 26 to rotate relative to the bracket 64 and reducing wear.

[0050] Optionally, a portion of the protrusion is located at one end of the locking member 26 near the locking protrusion 34, and another portion surrounds the outside of the shaft hole.

[0051] The bracket 64 includes a bracket body 65 and mounting portions 67 located on opposite sides of the bracket body 65. The two mounting portions 67 are connected to the housing 12. The locking member 26 is located inside the bracket body 65. The opening 68 is located on the side of the bracket body 65 facing the winding reel 14. The two mounting portions 67 protrude from the side of the opening 68 facing the winding reel 14, so that the side of the bracket 64 near the winding reel 14 forms a shape that is concave in the middle and convex on both sides. This can increase the distance between the opening 68 and the winding reel 14 without increasing the size of the bracket 64, which is beneficial to improving the compactness of the structure.

[0052] The housing 12 has two spaced-apart protrusions 69 located within the accommodating space 66. Each end of the bracket 64 has a connecting hole 71 corresponding to one of the protrusions 69. Fasteners (not shown) pass through the connecting holes 71 and connect to the protrusions 69. A locking member 26 is located between the two protrusions 69. In an optional example, the connecting hole 71 is located on the mounting portion 67, the protrusions 69 are located inside the mounting portion 67, and the fastener is a screw. This screw passes through the connecting hole 71 and threadedly engages with the protrusion 69, thereby fixing the bracket 64 within the housing 12.

[0053] In one embodiment, the reel 14 includes a winding body 70 and a receiving portion 72 protruding from one side of the winding body 70. A telescopic cable 16 is wound around the winding body 70. The receiving portion 72 and the locking member 26 are located on the side of the winding body 70 away from the telescopic cable 16. The locking structure 20 and the spring piece 22 are located on the same side of the winding body 70 as the receiving portion 72. A locking protrusion 34 extends towards the receiving portion 72, and a locking groove 36 that mates with the locking protrusion 34 is provided on the outer side of the receiving portion 72. This arrangement, with the telescopic cable 16, locking structure 20, and spring piece 22 located on different sides of the reel 14, avoids the problem of excessive space occupation in one direction due to their being on the same side, thus fully utilizing the internal space of the housing 12 and facilitating the winding of longer telescopic cables 16 onto the winding body 70.

[0054] The outer side of the receiving portion 72 is provided with a plurality of protrusions 75, which are arranged at intervals along the circumference of the receiving portion 72, and the gap between adjacent protrusions 75 forms a locking groove 36. For example, the protrusions 75 extend along the circumference of the receiving portion 72, and the protrusions 75 are arc-shaped blocks.

[0055] The receiving part 72 has a receiving cavity 74, and a coil spring (not shown) is installed in the receiving cavity 74. The two ends of the coil spring are connected to the housing 12 and the winding reel 14, respectively. When the winding reel 14 rotates in the direction of cable delivery, the coil spring contracts and deforms, generating elastic force. In the use state, the locking protrusion 34 is inserted into the locking groove 36, and the latch 48 on the locking member 26 is inserted into the locking groove 42, positioning the winding reel 14 in the corresponding position. When the locking protrusion 34 exits the locking groove 36, the winding reel 14 can rotate in the direction of cable reeling under the elastic force of the coil spring, forming an automatic cable reeling effect, which is convenient for users. The receiving part 72 is located on the side of the winding body 70 away from the telescopic line 16, so the size of the receiving part 72 is not affected by the telescopic line 16, so as to form a larger receiving part 72, thereby accommodating a larger coil spring.

[0056] The receiving portion 72 includes a surrounding wall 76 connected to the winding body 70. The surrounding wall 76 is annular, with a receiving cavity 74 located inside the surrounding wall 76 and an arc-shaped block 38 forming a locking groove 36 located outside the surrounding wall 76. The surrounding wall 76 has a notch 78 communicating with the receiving cavity 74. A connecting portion 80 is provided within the notch 78. A fixing shaft 82 is provided within the housing 12, with one end of the fixing shaft 82 extending into the receiving cavity 74. Both ends of the coil spring are connected to the connecting portion 80 and the fixing shaft 82, respectively. That is, the outer end of the coil spring is connected to the connecting portion 80, and the inner end of the coil spring is connected to the housing 12 via the fixing shaft 82. By providing the connecting portion 80 through the notch 78 in the surrounding wall 76, the connecting portion 80 does not occupy space within the receiving portion 72, allowing for a larger coil spring to be installed within the receiving portion 72.

[0057] Optionally, the receiving portion 72 may also include a cover plate 84 disposed on the side of the enclosure 76 away from the winding body 70, with a coil spring located between the cover plate 84 and the winding body 70 to prevent the coil spring from falling out of the receiving portion 72.

[0058] A partition plate 86 is provided inside the housing 12. The partition plate 86 is fixed relative to the housing 12. One end of the fixing shaft 82 is connected to the partition plate 86, and the other end extends into the receiving cavity 74, thereby keeping the fixing shaft 82 and the housing 12 relatively fixed. The charging module 18 and the cable reel 14 are located on opposite sides of the partition plate 86. The locking structure 20 is located on the side of the cable reel 14 away from the charging module 18. The partition plate 86 separates the charging module 18 and the cable reel 14, and the locking structure 20 is located on the side of the cable reel 14 away from the charging module 18.

[0059] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A retractable threader module, characterized by, The application relates to a winding device, which comprises a shell, a winding reel rotatably arranged in the shell, an elastic wire wound on the winding reel, a locking structure arranged in the shell and a spring arranged in the shell, wherein the locking structure is arranged on one side of the winding reel and is used for positioning the winding reel. The locking structure comprises a locking member rotatably connected with the shell, the locking member is provided with a locking protrusion and a pressing portion, the winding reel is provided with a locking groove matched with the locking protrusion, the locking protrusion is arranged at one end of the locking member, the pressing portion is arranged at or close to the other end of the locking member, the pressing portion is in abutment with the spring, and the pressing portion extrudes the spring when the pressing portion rotates relative to the shell.

2. The retracting threader module of claim 1, wherein, The pressing portion is arranged between the locking protrusion and an end surface of the locking member away from the locking protrusion, and the pressing portion is arranged in a spaced manner relative to the end surface, and the spring is at least partially arranged between the pressing portion and the end surface.

3. The retracting threader module of claim 2, wherein, The locking member is provided with a shaft sleeve on one side facing the shell, the shell is correspondingly provided with a mounting shaft, the locking member is movably sleeved on the outer side of the mounting shaft through the shaft sleeve, and the pressing portion is fixedly connected with the shaft sleeve.

4. The retracting threader module of claim 2, wherein, The pressing portion comprises a contact surface facing the spring, the spring is in abutment with the contact surface, the contact surface is provided with a groove, and the groove and the pressing portion extend in different directions.

5. The retracting threader of claim 1, wherein, The spring comprises a flat section and extension sections arranged at two ends of the flat section, the flat section is arranged at an angle with the two extension sections, the flat section is consistent with the extension direction of the pressing portion and is in close contact with the pressing portion, and the extension sections are connected with the shell.

6. The retracting threader module of claim 5, wherein, One end of the extension section away from the flat section is provided with a bending portion, the shell is provided with two mutually spaced mounting columns, the locking member is arranged between the two mounting columns, and the two ends of the spring are sleeved on the outer sides of the corresponding mounting columns through the bending portions.

7. The retracting thread spool of claim 1, wherein, The pressing portion and the locking protrusion are arranged on the same horizontal plane, the pressing portion comprises a contact surface facing the spring, the contact surface is formed on the side of the pressing portion away from the locking protrusion, and the spring comprises a flat section in abutment with the contact surface.

8. A retractable line module according to any one of claims 1-7, wherein, The locking member comprises a length direction, a width direction and a thickness direction perpendicular to each other, the pressing portion extends along the width direction, the spring is arranged on one side of the pressing portion in the length direction, the spring comprises a flat section, the pressing portion comprises a contact surface facing the flat section, the contact surface is provided with a groove, and the groove extends along the thickness direction.

9. A retractable line module according to any one of claims 1-7, wherein, The shell is internally provided with a support, the support and the shell form a containing space, the spring and the locking member are arranged in the containing space, one side of the support is provided with an opening in communication with the containing space, and the locking protrusion extends to the outer side of the support through the opening.

10. The retracting thread spool of claim 9, wherein, The support comprises a support main body and mounting portions arranged on opposite sides of the support main body, the locking member is arranged in the support main body, the opening is arranged on one side of the support main body facing the winding reel, the two mounting portions protrude on one side of the opening facing the winding reel and are connected with the shell, and / or The shell is internally provided with two mutually spaced convex columns, the convex columns are located in the accommodation space, the two ends of the support are respectively provided with connecting holes corresponding to the convex columns, fasteners pass through the connecting holes and are connected with the convex columns, and the locking member is located between the two convex columns.

11. A retractable line module according to any one of claims 1-7, wherein, The reel includes a reel body and a containing portion protruding from one side of the reel body, the retractable cord is wound on the reel body, the containing portion and the locking member are located on the side of the reel body away from the retractable cord, the containing portion is provided with a containing cavity, a coil spring is arranged in the containing cavity, two ends of the coil spring are connected with the shell and the reel respectively, the locking protrusion extends towards the containing portion, and the containing portion is externally provided with the locking groove.

12. The retracting thread spool of claim 11, wherein, The containing portion includes an annular enclosing wall, the containing cavity is located on the inner side of the enclosing wall, the enclosing wall is provided with a notch in communication with the containing cavity, the notch is provided with a connecting portion, the shell is internally provided with a fixed shaft, one end of the fixed shaft extends into the containing cavity, and two ends of the coil spring are connected with the connecting portion and the fixed shaft respectively; and / or, The outer side of the containing portion is provided with a plurality of convex blocks, the plurality of convex blocks are arranged in a circumferential direction of the containing portion, and gaps between adjacent convex blocks form the locking groove.

13. A retractable line module according to any one of claims 1-7, wherein, The locking structure further includes a gear rotatably installed in the shell, the gear is provided with a locking groove and an unlocking groove, the locking groove and the unlocking groove are arranged in a circumferential direction of the gear, the locking member is provided with mutually spaced push blocks and clamping blocks, the push blocks and the clamping blocks are closer to the locking protrusion than the extrusion portion, and the gear is located between the push blocks and the clamping blocks. The push blocks are used to drive the gear to rotate, when the clamping blocks are inserted into the locking groove, the gear cooperates with the locking member to lock the reel in a winding direction.

14. A charging device, characterized by The retractable cord module includes a charging module and the retractable cord module according to any one of claims 1-13, the charging module is located on the side of the reel away from the locking structure and is electrically connected with the retractable cord.

Images