A random stretch reel

Abstract

The embodiment of the present application provides a random stretching reel, which comprises a shell, a data line, a wheel core, a locking part and a limiting part. One end of the data line is arranged to pass through the shell. The wheel core is rotatably arranged in the shell and is used for winding the data line. One of the locking part and the limiting part is arranged on the wheel core, and the other is arranged on the shell. The limiting part is matched with the locking part to lock the data line during stretching or recovery of the data line. The contact part of the locking part and the limiting part is mute material. The random stretching reel provided by the embodiment of the present application can make the collision sound smaller when the locking part collides with the limiting part during stretching or recovery of the data line.

Description

Technical Field

[0001] This application relates to the field of charging equipment technology, and in particular to a freely stretchable cable reel. Background Technology

[0002] With the widespread use of electronic products such as mobile phones and tablets, charging cables have become an essential item for users when traveling. Traditional data cables are long and inconvenient to store, which has led to the development of retractable data cable structures.

[0003] In related technologies, the collision noise between the data cable and the structure that locks the data cable during the extension and retraction process is relatively loud, which affects the user experience. Utility Model Content

[0004] In view of this, the present application aims to provide a freely stretchable cable reel that minimizes the collision noise when the locking part collides with the limiting part during the stretching or retraction of the data cable.

[0005] This application provides a freely stretchable cable reel, comprising:

[0006] case;

[0007] A data cable, one end of which extends out of the housing;

[0008] A wheel hub is rotatably disposed within the housing and is used to wind the data cable;

[0009] A locking part and a limiting part, wherein one of the locking part and the limiting part is provided in the wheel core and the other is provided in the housing;

[0010] The limiting part cooperates with the locking part to lock the data line during the stretching or retraction process of the data line;

[0011] The contact portion between the locking part and the limiting part is made of a sound-silencing material.

[0012] In some embodiments, the locking portion is annular, and the locking portion is circumferentially discontinuous to form at least one locking slot, and a portion of the limiting portion is used to insert into or withdraw from the locking slot.

[0013] In some embodiments, the locking part is located on the wheel core, and the limiting part includes a first limiting member and a second limiting member. The first limiting member is rotatably connected to the housing. The first limiting member includes a locking tongue, which is used to insert into or retract from any of the lock slots. When the locking tongue is inserted into the lock slot, the first limiting member is used to rotate in any direction to make the locking tongue retract from the lock slot.

[0014] The limiting part includes a first state and a second state:

[0015] In the first state, the latch is inserted into any one of the lock slots; the second limiting member prevents the first limiting member from rotating in the first direction and allows the first limiting member to rotate in the second direction, so that the wheel core can rotate in the stretching direction of the data cable;

[0016] In the second state, the first limiting member can rotate arbitrarily in the first direction or the second direction.

[0017] In some embodiments, the first limiting member includes a base and a positioning member connected to each other, the locking tongue is disposed on the side of the base facing the rotation axis of the wheel core, the second limiting member is rotatably connected to the housing, and the second limiting member is provided with a locking groove and a clearance groove, the locking groove and the clearance groove being arranged circumferentially along the rotation axis of the second limiting member;

[0018] In the first state, the positioning member extends into the locking groove, and the positioning member and the locking groove are self-locked along the retraction direction of the data line and can be separated along the stretching direction of the data line;

[0019] In the second state, the positioning member can rotate relative to the clearance groove.

[0020] In some implementations, the rotation center of the wheel core and the rotation center of the first limiting member are connected by a line when projected onto a plane perpendicular to the rotation axis of the wheel core. The rotation center of the second limiting member is located on the side of the reference line facing the wheel core in the data cable retraction direction.

[0021] In some embodiments, the first limiting member includes an auxiliary part disposed on the base. At the initial position of the first limiting member, the auxiliary part is located on the side of the reference line facing the retraction direction of the data line. The auxiliary part is used to push the second limiting member to rotate when the base rotates in a second direction. The positioning member is used to push the second limiting member to rotate when the base rotates in the first direction or the second direction.

[0022] In some implementations, the freely stretchable reel includes a reset member that cooperates with the first limiting member to provide a restoring force to the first limiting member.

[0023] In some embodiments, the first limiting member has a receiving groove formed on the side of the wheel core that is radially away from the rotation axis of the wheel core, and the resetting member includes a first flexible part and a second flexible part that are connected to each other. The first flexible part and the second flexible part are arranged radially along the wheel core. The first flexible part is connected to the housing, and the second flexible part is at least partially received in the receiving groove.

[0024] In some implementations, the projection of the housing onto a plane perpendicular to the rotation axis of the wheel core is rectangular, and the reset member is located at one of the corners of the housing.

[0025] In some embodiments, the housing includes a first housing wall and a second housing wall, the first housing wall and the second housing wall being disposed opposite each other along the rotation axis of the wheel core, the wheel core including a first end face facing the first housing wall, the locking portion protruding from the first end face, and the first limiting member and the second limiting member both being disposed on the first housing wall.

[0026] The freely stretchable cable reel provided in this application embodiment uses a silent material for the contact portion between the locking part and the limiting part. During the stretching or retraction of the data cable, the collision noise is reduced when the locking part and the limiting part collide, thereby achieving a silent effect for the freely stretchable cable reel. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the freely stretchable cable reel provided in the embodiments of this application;

[0028] Figure 2 for Figure 1 The diagram shown omits the housing and data cable.

[0029] Figure 3 for Figure 2 A schematic diagram of the first limiting member in the structure shown;

[0030] Figure 4 for Figure 2 A schematic diagram of the second limiting member in the structure shown;

[0031] Figure 5 A schematic diagram of the structure of the positioning member and the locking groove that self-lock in the data cable retraction direction is provided for the embodiments of this application (only the locking groove and the clearance groove are shown for the second limiting member);

[0032] Figure 6 A schematic diagram of the structure of the locking part of the data cable in a stretched state contacting the locking tongue in an embodiment of this application (only the locking groove and the clearance groove are shown in the second limiting member);

[0033] Figure 7 A schematic diagram of the structure of the auxiliary part of the data cable in the stretched state provided in this application embodiment, which moves along the first direction to contact the second limiting member (only the locking groove and the clearance groove are shown in the second limiting member);

[0034] Figure 8A schematic diagram of the structure of the data cable in the stretched state provided in this application embodiment after the auxiliary part moves along the first direction to push the second limiting member to rotate (only the locking groove and the clearance groove are shown in the second limiting member);

[0035] Figure 9 A schematic diagram of the structure of the positioning member in the data cable retraction state provided in this application embodiment, which moves along the second direction to contact the second limiting member (only the locking groove and the clearance groove are shown in the second limiting member);

[0036] Figure 10 A schematic diagram of the structure of the data cable in the retracted state provided in this application embodiment after the positioning member moves along the second direction to push the second limiting member to rotate (only the locking groove and the clearance groove of the second limiting member are shown);

[0037] Figure 11 A schematic diagram of the structure provided in this application embodiment, showing the data cable in a stretched state, where the locking part pushes the locking tongue to move in the second direction (only the locking groove and the clearance groove are shown in the second limiting member);

[0038] Figure 12 A schematic diagram of the structure of the data cable positioning member in the stretched state provided in this application embodiment, which moves along the second direction to contact the second limiting member (only the locking groove and the clearance groove are shown in the second limiting member);

[0039] Figure 13 A schematic diagram of the structure of the data line in the extended state of the lock tongue exiting the lock mouth provided in the embodiment of this application (only the locking groove and the clearance groove are shown in the second limiting member);

[0040] Figure 14 A schematic diagram of the structure of the data cable in the recycling state provided in this application embodiment, showing the positioning member moving along the first direction to contact the second limiting member (only the locking groove and the clearance groove are shown in the second limiting member).

[0041] Explanation of reference numerals in the attached figures

[0042] 10. Housing; 11. First housing wall; 12. Second housing wall; 20. Data cable; 30. Wheel core; 30a. First end face; 31. Locking part; 311. Locking port; 40. Limiting part; 41. First limiting member; 411. Lock tongue; 412. Base; 413. Positioning member; 414. Auxiliary part; 415. Receiving groove; 42. Second limiting member; 421. Locking groove; 422. Clearance groove; 50. Reset member; 51. First flexible part; 52. Second flexible part; 60. Flexible covering part; 70. Circuit board. Detailed Implementation

[0043] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but should not be used to limit the scope of this application.

[0044] In the description of the embodiments of this application, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0045] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0046] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature and the second feature are in direct contact, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0047] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0048] Please combine Figure 1 , Figure 2 , Figure 3 and Figure 4 This application provides a freely stretchable cable reel, which includes a housing 10, a data cable 20, a reel core 30, a locking part 31, and a limiting part 40.

[0049] One end of the data cable 20 extends out of the housing 10. This allows the user to stretch one end of the data cable 20 and to charge the electronic device at the other end.

[0050] The wheel core 30 is rotatably disposed inside the housing 10 and is used to wind the data cable 20. The wheel core 30 and the data cable 20 drive each other to move. During the stretching process of the data cable 20 by external force, the stretching of the data cable 20 drives the wheel core 30 to rotate clockwise; when the wheel core 30 rotates counterclockwise, the wheel core 30 drives the data cable 20 to retract into the housing 10.

[0051] For example, the freely retractable cable reel includes a coil spring, and a hub 30 has a placement groove in which the coil spring is disposed. One end of the coil spring is connected to the inner wall of the placement groove, and the other end of the coil spring is directly or indirectly connected to the housing 10. The coil spring can store elastic potential energy during the forward rotation of the hub 30 driven by the data cable 20. When it is necessary to retract the data cable 20, the coil spring uses the stored elastic potential energy to drive the hub 30 in reverse rotation, so that the hub 30 drives the data cable 20 to be retracted into the interior of the housing 10.

[0052] For example, Figure 5 , Figure 9 , Figure 10 , Figure 14 In the diagram, d1 indicates the retraction direction of data line 20; Figure 6 , Figure 7 , Figure 8 , Figure 11 , Figure 12 and Figure 13 d2 in the figure indicates the stretching direction of data line 20.

[0053] The locking part 31 and the limiting part 40 are respectively located on the wheel core 30 and the housing 10.

[0054] In some embodiments, the locking part 31 is disposed on the wheel core 30, and the limiting part 40 is disposed on the housing 10. In this embodiment, the wheel core 30 can drive the locking part 31 to rotate.

[0055] In other embodiments, the locking part 31 is provided on the housing 10, and the limiting part 40 is provided on the wheel core 30.

[0056] The limiting part 40 cooperates with the locking part 31 to lock the data cable 20 during the stretching or retraction process.

[0057] For example, the contact portion between the locking part 31 and the limiting part 40 is made of a sound-silencing material. Thus, during the stretching or retraction of the data cable 20, when the locking part 31 collides with the limiting part 40, the collision noise is minimized, thereby achieving a silent effect for the freely stretchable cable reel.

[0058] It should be noted that the sound-silencing material refers to a flexible material, such as rubber or silicone.

[0059] The shape of the locking portion 31 is not limited. In some embodiments, the locking portion 31 is annular, and the locking portion 31 is circumferentially discontinuous to form at least one locking slot 311.

[0060] It should be noted that "at least one lock slot 311" means that the number of lock slots 311 can be one or more, while "multiple" means two, three or more.

[0061] In this embodiment, the disconnection point of the locking part 31 may be covered with a sound-absorbing material, or the material of the disconnection point of the locking part 31 may be a sound-absorbing material.

[0062] In some embodiments, the housing 10 includes a first housing wall 11 and a second housing wall 12, which are arranged opposite to each other along the rotation axis of the wheel core 30 to enclose and form the housing 10.

[0063] In some embodiments, the projection of the housing 10 onto a plane perpendicular to the rotation axis of the wheel core 30 is rectangular. That is, the cross-section of the housing 10 along the rotation axis of the wheel core 30 is rectangular, and the cross-sections of the first housing wall 11 and the second housing wall 12 along the rotation axis perpendicular to the wheel core 30 are rectangular.

[0064] It should be noted that the rectangle includes the case where the corners of the first shell wall 11 and the second shell wall 12 are rounded.

[0065] In some other embodiments, the cross-section of the housing 10 along the rotation axis of the wheel core 30 may also be circular, elliptical, etc.

[0066] For example, the wheel core 30 includes a first end face 30a facing the first housing wall 11, and a locking part 31 protrudes from the first end face 30a.

[0067] In some embodiments, the wheel core 30 and the locking part 31 are an integral structure.

[0068] For example, the limiting part 40 includes a first limiting member 41 and a second limiting member 42. The first limiting member 41 is rotatably connected to the housing 10. The first limiting member 41 includes a locking tongue 411, which is used to insert into or withdraw from any lock slot 311. When the locking tongue 411 is inserted into the lock slot 311, the first limiting member 41 is used to rotate in any direction to make the locking tongue 411 withdraw from the lock slot 311.

[0069] It should be noted that when the latch 411 is inserted into the lock slot 311, the first limiting member 41 can be driven to rotate by the locking part 31. Please refer to [link / reference]. Figure 6 When the wheel core 30 moves along the stretching direction of the data cable 20, the locking part 31 can drive the locking tongue 411 to move in the second direction, that is, drive the first limiting member 41 to move in the second direction. Please refer to Figure 9 When the wheel core 30 moves along the retraction direction of the data line 20, the locking part 31 can drive the locking tongue 411 to move along the first direction, that is, drive the first limiting member 41 to move along the first direction.

[0070] It should be noted that, Figure 5 , Figure 9 , Figure 10 , Figure 14 In the diagram, d3 indicates the first direction. Figure 5 , Figure 6 , Figure 7 , Figure 11 , Figure 12 d4 in the diagram indicates the second direction.

[0071] For example, the limiting part 40 includes a first state and a second state.

[0072] In the first state, the latch 411 is inserted into any of the lock slots 311. The second limiting member 42 prevents the first limiting member 41 from rotating in the first direction, but allows the first limiting member 41 to rotate in the second direction, so that the wheel core 30 can rotate in the stretching direction of the data cable 20. In the second state, the first limiting member 41 can rotate arbitrarily in either the first or second direction.

[0073] Please see Figure 5 In the first state, since the locking tongue 411 is inserted into the lock slot 311 and the second limiting member 42 cannot rotate in the first direction, that is, the locking tongue 411 will prevent the wheel core 30 from rotating in the retraction direction of the data cable 20, thus preventing the data cable 20 from being retracted. At this time, the data cable 20 is in a locked state in the retraction direction. Please refer to [link / reference]. Figure 6 and Figure 7 If the data cable 20 continues to be pulled, the data cable 20 will cause the wheel core 30 to rotate in the direction of tension of the data cable 20. At the same time, the locking part 31 will cause the locking tongue 411 to rotate in the second direction. Since the second limiting member 42 allows the first limiting member 41 to rotate in the second direction, the first limiting member 41 rotates in the second direction under the drive of the locking part 31, causing the locking tongue 411 to disengage from the lock mouth 311. Thus, a one-way anti-rotation engagement is achieved between the limiting part 40 and the wheel core 30.

[0074] In the second state, please refer to Figure 10 , Figure 11The locking part 31 can drive the first limiting member 41 to rotate in the first direction or the second direction, so that the locking tongue 411 exits the locking slot 311. At this time, the wheel core 30 can rotate arbitrarily in the retraction direction or the stretching direction of the data line 20.

[0075] For example, the first limiting member 41 and the second limiting member 42 are both disposed on the first shell wall 11. In this way, the first limiting member 41 and the second limiting member 42 are disposed on the side of the first end face 30a facing the first shell wall 11, so that the limiting part 40 can cooperate with the lock 311.

[0076] For example, please combine Figure 3 and Figure 5 The first limiting member 41 includes a base 412 and a positioning member 413 that are connected to each other, and the locking tongue 411 is located on the side of the base 412 facing the rotation axis of the wheel core 30.

[0077] For example, the second limiting member 42 is rotatably connected to the housing 10.

[0078] Please see Figure 4 The second limiting member 42 is provided with a locking groove 421 and a clearance groove 422, which are arranged circumferentially along the rotation axis of the second limiting member 42.

[0079] In the first state, such as Figure 5 As shown, the positioning member 413 extends into the locking groove 421. The positioning member 413 and the locking groove 421 are self-locked along the retraction direction of the data line 20 and can be separated along the stretching direction of the data line 20.

[0080] In the second state, such as Figure 9 , Figure 10 , Figure 11 , Figure 12 As shown, the positioning element 413 can rotate relative to the clearance groove 422.

[0081] In this embodiment, in the first state, the positioning member 413 and the locking groove 421 self-lock along the retraction direction of the data line 20, so that the second limiting member 42 prevents the first limiting member 41 from rotating along the first direction. The positioning member 413 and the locking groove 421 can be separated along the stretching direction of the data line 20, so that the first limiting member 41 can rotate along the second direction, so that the locking tongue 411 exits the locking slot 311, and the wheel core 30 can rotate along the stretching direction of the data line 20.

[0082] In the second state, the clearance groove 422 does not prevent the rotation of the positioning member 413, that is, the positioning member 413 can rotate in the first direction or the second direction, and the locking part 31 can push the locking tongue 411 to rotate in the first direction or the second direction, thereby driving the first limiting member 41 to rotate in the first direction or the second direction.

[0083] It should be noted that the clearance groove 422 will not prevent the rotation of the positioning member 413. It is possible that the positioning member 413 does not contact the clearance groove 422, or that the positioning member 413 can contact the clearance groove 422 but the positioning member 413 can move along the first direction or the second direction. In this case, the positioning member 413 can also drive the clearance groove 422 to move by contacting the clearance groove 422, thereby driving the second limiting member 42 to rotate.

[0084] For example, please refer to Figure 6 The rotation center O1 of the wheel core 30 is projected onto the plane perpendicular to the rotation axis of the wheel core 30. The line connecting the rotation center O1 of the wheel core 30 and the rotation center O2 of the first limiting member 41 is used as the reference line. The rotation center O3 of the second limiting member 42 is located on the side of the reference line facing the wheel core 30 along the recycling direction of the data line 20.

[0085] Please see Figure 3 The first limiting member 41 includes an auxiliary part 414 disposed on the base 412. In the initial position of the first limiting member 41, the auxiliary part 414 is located on the side of the reference line facing the retraction direction of the data line 20. The auxiliary part 414 is used to push the second limiting member 42 to rotate when the base 412 rotates in the second direction. In this way, the engagement between the positioning member 413 and the second limiting member 42 switches between a first state and a second state.

[0086] Please combine Figure 7 and Figure 8 The auxiliary part 414 pushes the second limiting member 42 to rotate, so that the positioning member 413 can cooperate with the clearance groove 422. Please refer to Figure 12 , Figure 13 and Figure 14 The auxiliary part 414 rotates through the second limiting member 42, so that the positioning member 413 can cooperate with the locking groove 421.

[0087] That is, by rotating the second limiting member 42, the positioning member 413 can cooperate with the locking groove 421 in the first state and with the clearance groove 422 in the second state.

[0088] For example, the positioning member 413 is used to push the second limiting member 42 to rotate when the base 412 rotates in a first direction or a second direction.

[0089] When engaging with the clearance groove 422, the clearance groove 422 is pushed to rotate, allowing the auxiliary part 414 to contact the second limiting member 42 at different positions along the circumference, thereby switching the engagement between the positioning member 413 and the second limiting member 42 between a first state and a second state. When engaging with the locking groove 421, the locking groove 421 is pushed to rotate, causing the locking groove 421 and the positioning member 413 to self-lock in the retraction direction of the data line 20.

[0090] In other words, through the cooperation of the auxiliary part 414, the positioning member 413, and the second limiting member 42, the positioning member 413 can cooperate with the locking groove 421 in the first state and with the clearance groove 422 in the second state.

[0091] In this embodiment, the rotation center of the second limiting member 42 and the auxiliary part 414 are both located on the side of the reference line facing the retraction direction of the data line 20. This ensures that the distance between the auxiliary part 414 and the second limiting member 42 is not too far, so that the auxiliary part 414 can contact the second limiting member 42 and push the second limiting member 42 to rotate when it rotates with the base 412.

[0092] In some embodiments, the number of locking grooves 421 and clearance grooves 422 is the same, and there are multiple locking grooves 421 and multiple clearance grooves 422 arranged alternately along the circumferential axis of rotation of the second limiting member 42. This allows the positioning member 413 to sequentially engage with the locking grooves 421 and clearance grooves 422, so that every time the data cable 20 is stretched a certain distance, the engagement between the positioning member 413 and the second limiting member 42 can switch between a first state and a second state once. Thus, the data cable 20 can switch between a locked state and a retracted state once.

[0093] In some embodiments, such as Figure 2 As shown, the free-stretching cable reel includes a reset member 50, which cooperates with a first limiting member 41 to provide a restoring force to the first limiting member 41.

[0094] In this embodiment, under the push of the locking part 31, the locking tongue 411 exits the lock mouth 311 along the first direction or the second direction and contacts the outer periphery of the locking part 31. The locking tongue 411 drives the first limiting member 41 to move along the first direction or the second direction. The restoring force of the reset member 50 makes the first limiting member 41 have a movement tendency opposite to the movement direction of the locking tongue 411, so that the locking tongue 411 can enter the next lock mouth 311 (there are multiple lock mouths 311) or return to the lock mouth 311 (there is only one lock mouth 311) during the rotation of the wheel core 30.

[0095] The material of the reset member 50 is not limited, as long as it can provide restoring force to the first limiting member 41. For example, the reset member 50 can be made of rubber, silicone, etc.

[0096] For example, such as Figure 3As shown, the first limiting member 41 has a receiving groove 415 formed on the side of the wheel core 30 radially away from the rotation axis of the wheel core 30. The reset member 50 includes a first flexible part 51 and a second flexible part 52 connected to each other. The first flexible part 51 and the second flexible part 52 are arranged radially along the wheel core 30. The first flexible part 51 is connected to the housing 10, and the second flexible part 52 is at least partially received in the receiving groove 415. In this way, during the rotation of the first limiting member 41 in the first direction or the second direction, the first limiting member 41 can compress the second flexible part 52, so that the second flexible part 52 can provide a restoring force to the first limiting member 41.

[0097] For example, the first flexible part 51 is connected to the first shell wall 11.

[0098] In an embodiment where the cross-section of the housing 10 along the rotation axis of the wheel core 30 is rectangular, the first flexible part 51 is disposed at one corner of the first housing wall 11. Thus, the corner of the first housing wall 11 provides sufficient mounting space for the first flexible part 51, resulting in a compact structure and helping to reduce the cross-sectional dimensions of the housing 11 along the rotation axis perpendicular to the wheel core 30.

[0099] In some embodiments, the first limiting member 41 is a rigid member; and / or, the second limiting member 42 is a rigid member. This makes the fit between the first limiting member 41 and the second limiting member 42 more stable.

[0100] For example, please refer to Figure 1 and Figure 2 The stretchable cable reel includes a circuit board 70, which is located inside the housing 10. The circuit board 70 is used for conductive contact with an external power source, and the other end of the data cable 20 is electrically connected to the circuit board 70. In other words, the circuit board 70 serves as the input terminal of the stretchable cable reel, used for contact with an external power source and for transmitting electrical energy, enabling the data cable 20 to power electronic devices.

[0101] The circuit board 70 has conductive terminals on its surface, which are exposed outside the housing 10 to facilitate conductive contact with an external power source.

[0102] The movement process of the data line 20 in the embodiment of this application will be briefly described below with reference to the accompanying drawings.

[0103] For easy distinction, when the latch 411 is inserted into the lock opening 311, the break point of the locking part 31 on the side of the latch 411 facing the stretching direction is named the first break point 311a, and the break point of the locking part 31 on the side of the latch 411 facing the retraction direction is named the second break point 311b.

[0104] like Figure 5As shown, the data line 20 is in a locked state along the recycling direction, at which time the positioning member 413 and the locking groove 421 are locked along the recycling direction.

[0105] At this time, the data cable 20 is stretched along its stretching direction. The data cable 20 moves along the stretching direction and drives the wheel core 30 to rotate along the stretching direction. The rotation of the wheel core 30 drives the locking part 31 to rotate. Please refer to [link / reference]. Figure 6 The second disconnection point 311b of the locking part 31 contacts the latch 411 and can push the latch 411 to move in the second direction. During the stretching of the data line 20, the coil spring is used to store elastic potential energy.

[0106] The movement of the latch 411 causes the base 412 to move in the second direction. The second disconnection point 311b of the locking part 31 continues to push the latch 411 to move in the second direction. (See also...) Figure 7 The auxiliary part 414 moves with the base 412 to a position where it contacts the second limiting member 42.

[0107] Please see Figure 8 The second disconnection point 311b of the locking part 31 continues to push the bolt 411 to move in the second direction, causing the bolt 411 to exit the lock 311. The auxiliary part 414 follows the base 412 to move in the second direction and pushes the second limiting member 42 to rotate. Figure 8 The state shown is the final state in which the limiting part 40 and the locking part 31 cooperate during the stretching of the data cable 20. In this state, if the pulling force is not released, the cooperation between the limiting part 40 and the locking part 31 will not change, and the data cable 20 can continue to be stretched. At this time, the limiting part 40 is in the second state.

[0108] That is, during the stretching of the data line 20, the locking part 31 drives the limiting part 40 to switch from the first state to the second state.

[0109] Reducing or canceling the tension causes the elastic potential energy stored in the coil spring to rotate the wheel core 30 in the retraction direction of the data cable 20. The wheel core 30 retracts the data cable 20 and also causes the locking part 31 to rotate in the retraction direction. The restoring force of the reset member 50 also causes the first limiting member 41 to move in the first direction, causing the bolt 411 to insert into the lock slot 311. (See also...) Figure 9 The locking tongue 411 contacts the first disconnection 311a of the locking part 31, and the first disconnection 311a of the locking part 31 pushes the locking tongue 411 to move along the retraction direction of the data line 20. The locking tongue 411 drives the positioning member 413 to move along the first direction, and the positioning member 413 moves to contact the clearance groove 422.

[0110] Please see Figure 10The first disconnection point 311a of the locking part 31 continues to push the locking tongue 411 to move along the retraction direction of the data line 20, causing the locking tongue 411 to exit the lock mouth 311. At the same time, the positioning member 413 pushes the relief groove 422 to rotate, thereby causing the second limiting member 42 to rotate. At this time, the positioning member 413 cooperates with the relief groove 422. Figure 10 The state shown is the final state in which the data cable 20 engages with the locking part 31 during the data cable retraction process. At this time, if the data cable 20 is not stretched, the data cable 20 will continue to retract until it is stored in the housing 10.

[0111] That is, the locking part 31 switches from a locked state along the retraction direction of the data cable 20 to a released state. The wheel core 30 reverses to drive the data cable 20 to retract, and the data cable 20 switches from a locked state along the retraction direction to a continuously retracting state, so that the data cable 20 can be retracted into the interior of the housing 10.

[0112] During the continuous retraction of data cable 20, data cable 20 is stretched, and data cable 20 moves in the stretching direction. Please refer to [link / reference]. Figure 11 The first limiting member 41 moves in the second direction under the restoring force of the resetting member 50, causing the locking tongue 411 to insert into the lock mouth 311. At this time, the disconnected part of the locking part 31 pushes the locking tongue 411 to move in the second direction. Since the positioning member 413 was previously in a state of cooperating with the relief groove 422, the positioning member 413 will also move in the second direction. Figure 12 As shown, the positioning member 413 can contact the clearance groove 422 during its movement along the second direction, so as to push the second limiting member 42 to rotate a certain angle.

[0113] like Figure 13 As shown, when the data cable 20 is stretched further, the second disconnection point 311b of the locking part 31 pushes the locking tongue 411 to continue moving in the second direction, causing the auxiliary part 414 to move in the second direction and contact the second limiting member 42, thus pushing the second limiting member 42 to rotate at a certain angle. At this time, the limiting part 40 is in the first state.

[0114] That is, during the stretching of the data line 20, the locking part 31 drives the limiting part 40 to switch from the second state to the first state.

[0115] At this point, reducing or removing the tension causes the elastic potential energy stored in the coil spring to cause the wheel core 30 to rotate in the retraction direction of the data cable 20. The wheel core 30 then reverses direction, causing the data cable 20 to retract. For example... Figure 14As shown, the restoring force of the reset member 50 causes the first limiting member 41 to move along the first direction, causing the bolt 411 to insert into the lock slot 311, and simultaneously causing the positioning member 413 to contact the locking groove 421. The elastic potential energy of the coil spring causes the wheel core 30 to rotate along the retraction direction of the data cable 20. The first disconnection point 311a of the locking part 31 pushes the bolt 411 to move along the first direction, and the positioning member 413 can also push the locking groove 421 to rotate until the positioning member 413 and the locking groove 421 achieve self-locking along the retraction direction of the data cable 20, returning to the starting position. Figure 5 The state shown.

[0116] The locking part 31 switches from a released state along the retraction direction of the data line 20 to a locked state, and the data line 20 switches from a continuously retracted state to a locked state along the retraction direction. At this time, the data line 20 can be used to charge electronic devices.

[0117] By continuously repeating this process, the data cable 20 can be stretched, retracted, and locked during the stretching or retraction process.

[0118] The various embodiments / implementations provided in this application can be combined with each other without creating contradictions.

[0119] The above description is merely a preferred embodiment of this application and is not intended to limit the application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A freely stretchable cable reel, characterized in that, include: case; A data cable, one end of which extends out of the housing; A wheel hub is rotatably disposed within the housing and is used to wind the data cable; A locking part and a limiting part, wherein one of the locking part and the limiting part is provided in the wheel core and the other is provided in the housing; The limiting part cooperates with the locking part to lock the data line during the stretching or retraction process of the data line; The contact portion between the locking part and the limiting part is made of a sound-silencing material.

2. The freely stretchable cable reel according to claim 1, characterized in that, The locking part is annular and is circumferentially discontinuous to form at least one locking opening. A portion of the limiting part is used to insert into or withdraw from the locking opening.

3. The freely stretchable cable reel according to claim 2, characterized in that, The locking part is located on the wheel core, and the limiting part includes a first limiting member and a second limiting member. The first limiting member is rotatably connected to the housing. The first limiting member includes a locking tongue, which is used to insert into or retract from any of the lock slots. When the locking tongue is inserted into the lock slot, the first limiting member is used to rotate in any direction to make the locking tongue retract from the lock slot. The limiting part includes a first state and a second state: In the first state, the latch is inserted into any one of the lock slots; the second limiting member prevents the first limiting member from rotating in the first direction and allows the first limiting member to rotate in the second direction, so that the wheel core can rotate in the stretching direction of the data cable; In the second state, the first limiting member can rotate arbitrarily in the first direction or the second direction.

4. The freely stretchable cable reel according to claim 3, characterized in that, The first limiting member includes a base and a positioning member connected to each other. The locking tongue is disposed on the side of the base facing the rotation axis of the wheel core. The second limiting member is rotatably connected to the housing. The second limiting member is provided with a locking groove and a clearance groove. The locking groove and the clearance groove are arranged circumferentially along the rotation axis of the second limiting member. In the first state, the positioning member extends into the locking groove, and the positioning member and the locking groove are self-locked along the retraction direction of the data line and can be separated along the stretching direction of the data line; In the second state, the positioning member can rotate relative to the clearance groove.

5. The freely stretchable cable reel according to claim 4, characterized in that, Projecting the rotation axis of the wheel core onto a plane perpendicular to it, with the line connecting the rotation center of the wheel core and the rotation center of the first limiting member as a reference line, the rotation center of the second limiting member is located on the side of the reference line facing the wheel core in the data line retraction direction.

6. The freely stretchable cable reel according to claim 5, characterized in that, The first limiting member includes an auxiliary part disposed on the base. At the initial position of the first limiting member, the auxiliary part is located on the side of the reference line facing the retraction direction of the data line. The auxiliary part is used to push the second limiting member to rotate when the base rotates in the second direction. The positioning member is used to push the second limiting member to rotate when the base rotates in the first direction or the second direction.

7. The freely stretchable cable reel according to claim 3, characterized in that, The freely stretchable reel includes a reset member, which cooperates with the first limiting member to provide a restoring force to the first limiting member.

8. The freely stretchable cable reel according to claim 7, characterized in that, The first limiting member has a receiving groove formed on the side of the wheel core away from the rotation axis of the wheel core along the radial direction. The resetting member includes a first flexible part and a second flexible part that are connected to each other. The first flexible part and the second flexible part are arranged along the radial direction of the wheel core. The first flexible part is connected to the housing, and the second flexible part is at least partially received in the receiving groove.

9. The freely stretchable cable reel according to claim 7, characterized in that, Projecting the housing onto a plane perpendicular to the rotation axis of the wheel core, the projection of the housing is rectangular, and the reset member is located at one of the corners of the housing.

10. The freely stretchable cable reel according to claim 3, characterized in that, The housing includes a first housing wall and a second housing wall, which are arranged opposite to each other along the rotation axis of the wheel core. The wheel core includes a first end face facing the first housing wall. The locking part protrudes from the first end face. The first limiting member and the second limiting member are both disposed on the first housing wall.

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