A retractable cord device

Abstract

The application relates to a telescopic wire device which comprises a shell and a telescopic wire reel assembly; a locking assembly is further arranged in the shell; the telescopic wire reel assembly comprises a wire clamping disc; a clamping hole is arranged in the circumferential direction of the wire clamping disc; the locking assembly comprises a swing piece; the swing piece is provided with a protruding part; the swing piece has the freedom of deflecting to a first direction and the freedom of deflecting to a second direction opposite to the first direction; the locking assembly further comprises a limiting piece; the limiting piece is used for limiting the first maximum amplitude and the second maximum amplitude of the swing piece deflecting to the second direction; when the swing piece is at the first maximum amplitude of deflecting to the second direction, the wire clamping disc is locked to stop wire winding; when the swing piece is at the second maximum amplitude of deflecting to the second direction, the locking of the wire clamping disc is released. The device of the application is locked when the wire body is pulled out and loosened, the pulled-out state is kept, the locking is released when the wire body is pulled again, and the wire body is continuously recovered after being loosened; the overall structure is stable, the action is smooth, and there is no jam.

Description

Technical Field

[0001] This invention relates to the field of telescopic cords, and in particular to a telescopic cord device. Background Technology

[0002] With economic development and social progress, electronic products are becoming increasingly popular, and charging products have become necessities. Many charging cables are messy and untidy during use, but retractable charging cables can effectively solve this problem.

[0003] However, current retractable charging cables are prone to jamming and unstable extension / retraction during actual use. Therefore, how to design a retractable charging cable that extends and retracts smoothly without jamming has become an urgent problem to be solved. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a telescopic cable device that locks when the cable is pulled out and released, maintaining the pulled-out state, and releases the lock when pulled out again, allowing the cable to continuously retract after being released; the overall structure is stable, the operation is smooth, and there is no jamming.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a telescopic cable device, comprising a housing and a telescopic cable reel assembly rotatably mounted on the housing; a locking component cooperating with the telescopic cable reel assembly is also installed inside the housing; the telescopic cable reel assembly includes a cable-holding disc; the cable-holding disc is provided with at least one latch in its circumferential direction; the locking component includes a swing member rotatably mounted on the housing; the swing member is provided with a protrusion that cooperates with the latch; in the initial position, the protrusion of the swing member corresponds directly to the latch; the swing member also has a degree of freedom to deflect in a first direction and a degree of freedom to deflect in a second direction opposite to the first direction; wherein, the first... The first direction is the deflection direction opposite to the rotation direction of the wire-holding disc during wire feeding; the second direction is the deflection direction opposite to the rotation direction of the wire-holding disc during wire take-up; the locking assembly also includes a limiting member rotatably mounted on the housing; the limiting member is used to limit the first maximum amplitude and the second maximum amplitude of the deflection of the pendulum in the second direction; when the pendulum is at the first maximum amplitude of the deflection in the second direction, the protrusion is located inside the bayonet and is used to lock the wire-holding disc, so that the wire-holding disc stops taking up the wire; when the pendulum is at the second maximum amplitude of the deflection in the second direction, the protrusion disengages from the wire-holding disc and is used to release the lock on the wire-holding disc.

[0006] Furthermore, the limiting member includes a limiting portion; the limiting portion is provided with a plurality of first limiting grooves and second limiting grooves; the first limiting grooves and second limiting grooves surround the outer periphery of the limiting member and are alternately arranged; the openings of the first limiting grooves and second limiting grooves face the first direction; the wire-locking disc is provided with a limiting block; the first limiting groove and the limiting block cooperate to limit the first maximum amplitude of the pendant deflection in the second direction; the second limiting groove and the limiting block cooperate to limit the second maximum amplitude of the pendant deflection in the second direction.

[0007] Furthermore, the limiting member also includes a transmission part; the transmission part is provided with a plurality of transmission grooves; the opening of the transmission grooves faces the second direction; the transmission grooves surround the outer periphery of the limiting member; the wire-clamping disc is also provided with a pushing block; the transmission grooves and the pushing block are correspondingly engaged, and the pushing block is used to act on the transmission grooves under the drive of the swing member, so as to rotate the limiting member, thereby making the first limiting groove correspond to the limiting block, or making the second limiting groove correspond to the limiting block.

[0008] Furthermore, the transmission groove and the push block are correspondingly engaged, and are also used to limit the third maximum amplitude of the swing object's deflection in the first direction; when the swing object is at the third maximum amplitude of deflection in the first direction, the protrusion disengages from the wire-locking disc and does not lock the wire-locking disc.

[0009] Furthermore, the transmission groove has a first inclined surface; the first inclined surface is used to first contact the pushing block when the pushing block is inserted into the current transmission groove, and under the action of the pushing block, drive the limiting member to rotate, thereby making the first limiting groove or the second limiting groove correspond to the limiting block.

[0010] Furthermore, the first limiting groove has a second inclined surface; the first inclined surface is used to contact the limiting block first when the limiting block is inserted into the first limiting groove, and under the action of the limiting block, drive the limiting member to rotate, thereby switching the current transmission groove corresponding to the pushing block to the next transmission groove.

[0011] Furthermore, the locking assembly also includes a reset member; the reset member is used to provide a force for the ornament to return to its initial position.

[0012] Furthermore, the reset component is an elastic steel needle; the swing component is provided with an insertion hole; the housing is correspondingly provided with a hole seat; one end of the elastic steel needle is inserted into the insertion hole, and the other end is installed in the hole seat.

[0013] Furthermore, the housing is also provided with a first shaft; the wire-clamping disc is sleeved on the first shaft; a first mounting groove is provided on one side of the wire-clamping disc; the telescopic wire reel assembly also includes a coil spring disposed in the first mounting groove; one end of the coil spring is fixedly mounted to the first shaft, and the other end is fixedly mounted to the wire-clamping disc; the coil spring is used to provide the wire-clamping disc with the power to reel in the wire.

[0014] Furthermore, the housing is also provided with a second shaft; the ornament is provided with a shaft hole for fitting onto the second shaft to achieve rotatable installation of the ornament and the housing; the housing is also provided with a mounting bracket; the limiting member also includes a shaft portion; both ends of the shaft portion are rotatably mounted on the mounting bracket.

[0015] Advantages of the present invention: The telescopic cable device of the present invention locks when the cable is pulled out and released, maintaining the pulled-out state, and releases the lock when pulled again, allowing the cable to continuously retract after being released; the overall structure is stable, the operation is smooth, and there is no jamming. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of a telescopic cable device according to an embodiment;

[0017] Figure 2 A schematic diagram of the internal structure of a telescopic cable device according to an embodiment;

[0018] Figure 3 An exploded view of a telescopic wire device according to an embodiment;

[0019] Figure 4 An exploded view of a telescopic wire device according to an embodiment from another angle;

[0020] Figure 5 A schematic diagram of a retractable cable device according to an embodiment;

[0021] Figure 6 A perspective view of a limiting member of a telescopic cable device according to an embodiment;

[0022] Figure 7 This is a perspective view of the limiting member of a telescopic cable device according to an embodiment, taken from another angle.

[0023] Figure 8 This is a schematic diagram of the cable pulling state of a telescopic cable device during the cable pulling process, as described in an embodiment.

[0024] Figure 9 This is a schematic diagram of a telescopic cable device in an embodiment, showing the cable pulling process in a stopped state.

[0025] Figure 10 This is a schematic diagram of the cable pulling state during the cable winding process of a telescopic cable device according to an embodiment;

[0026] Figure 11 This is a schematic diagram of the winding state of a telescopic cable device during the winding process, as shown in the embodiment.

[0027] Figure 12 A schematic diagram of the housing of a telescopic cable device according to an embodiment;

[0028] Among them, 1-shell, 2-wire assembly, 3-telescopic wire reel assembly, 4-locking assembly, 11-first shaft, 12-second shaft, 13-mounting bracket, 14-hole seat, 15-mounting area, 21-wire body, 22-interface, 23-terminal assembly, 231-moving terminal, 232-stationary terminal, 31-wire clamping disc, 32-coil spring, 311-bayonet, 312-first mounting groove, 313-second mounting groove, 41-swaying component, 42-limiting component, 43-resetting component, 411-shaft hole, 412-protrusion, 413-limiting block, 414-push block, 415-insertion hole, 421-first limiting groove, 422-second limiting groove, 423-transmission groove, 424-shaft portion, 4211-second inclined surface, 4231-first inclined surface. Detailed Implementation

[0029] To enhance understanding of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. These embodiments are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention.

[0030] Example

[0031] Please refer to Figures 1 to 12 As shown, this embodiment provides a telescopic cable device, including a housing 1 and a telescopic cable reel assembly 3 rotatably mounted on the housing 1; a locking assembly 4 cooperating with the telescopic cable reel assembly 3 is also installed inside the housing 1; the telescopic cable reel assembly 3 includes a cable-holding disc 31; the cable-holding disc 31 has at least one latch 311 circumferentially arranged; the locking assembly 4 includes a swing member 41 rotatably mounted on the housing 1; the swing member 4 has a protrusion 412 cooperating with the latch 311; in the initial position, the protrusion 412 of the swing member 41 corresponds directly to the latch 311; the swing member 41 also has a degree of freedom to deflect in a first direction and a degree of freedom to deflect in a second direction opposite to the first direction; wherein, the first direction The first direction is the deflection direction opposite to the rotation direction of the wire-holding disc during wire feeding; the second direction is the deflection direction opposite to the rotation direction of the wire-holding disc during wire take-up; the locking assembly 4 also includes a limiting member 42 rotatably mounted on the housing 1; the limiting member 42 is used to limit the first maximum amplitude and the second maximum amplitude of the deflection of the pendulum 41 in the second direction; when the pendulum 41 is at the first maximum amplitude of the deflection in the second direction, the protrusion 412 is located in the bayonet 311 and is used to lock the wire-holding disc 31, so that the wire-holding disc 31 stops taking up the wire; when the pendulum 41 is at the second maximum amplitude of the deflection in the second direction, the protrusion 412 disengages from the wire-holding disc 31 and is used to release the lock on the wire-holding disc 31.

[0032] Refer to Figure 6As shown, the limiting member 42 includes a limiting portion; the limiting portion has multiple first limiting grooves 421 and second limiting grooves 422; the first limiting grooves 421 and second limiting grooves 422 surround the outer periphery of the limiting member 42 and are alternately arranged; the openings of the first limiting grooves 421 and second limiting grooves 422 face a first direction; the wire-locking disc 31 is provided with a limiting block 413; the first limiting groove 421 and the limiting block 413 cooperate to limit the first maximum amplitude of the swing member 41 deflection in a second direction; the second limiting groove 422 and the limiting block 413 cooperate to limit the second maximum amplitude of the swing member 41 deflection in a second direction. The first limiting groove 421 is relatively shallow, and the second limiting groove 422 is relatively deep.

[0033] Refer to Figure 7 As shown, the limiting member 42 also includes a transmission part; the transmission part is provided with a plurality of transmission grooves 423; the opening of the transmission grooves 423 faces the second direction; the transmission grooves 423 surround the outer periphery of the limiting member 42; the wire clamping disc 31 is also provided with a pushing block 414; the transmission grooves 423 and the pushing block 414 are correspondingly engaged, and the pushing block 414 is used to act on the transmission grooves 42 under the drive of the swing member 41, so that the limiting member 42 rotates, thereby making the first limiting groove 421 correspond to the limiting block 413, or making the second limiting groove 422 correspond to the limiting block 413.

[0034] In a telescopic cable device of this embodiment, the transmission groove 423 corresponds to and cooperates with the push block 414, and is also used to limit the third maximum amplitude of the swing member 41 deflection in the first direction; when the swing member 41 is at the third maximum amplitude of deflection in the first direction, the protrusion 412 disengages from the cable clamping disc and does not lock the cable clamping disc.

[0035] Refer to Figure 7 As shown, the transmission groove 423 has a first inclined surface 4231; the first inclined surface 4231 is used to contact the pushing block 414 when the pushing block 414 is inserted into the current transmission groove 423, and under the action of the pushing block 414, drive the limiting member 42 to rotate, so that the first limiting groove 421 or the second limiting groove 422 corresponds to the limiting block 413.

[0036] Refer to Figure 6 As shown, the first limiting groove 421 has a second inclined surface 4211; the first inclined surface 4211 is used to contact the limiting block 413 when the limiting block 413 is inserted into the first limiting groove 421, and under the action of the limiting block 413, drive the limiting member 42 to rotate, thereby switching the current transmission groove 423 corresponding to the pushing block 414 to the next transmission groove 423.

[0037] Refer to Figure 3 and Figure 4As shown, the locking component 4 further includes a reset member 43; the reset member 43 is used to return the ornament to its initial position. Figure 2 The force exerted by the object (the position shown in the image is the initial position) is as follows.

[0038] In this embodiment of the telescopic cable device, the reset member 43 is an elastic steel needle; the swing member 41 is provided with an insertion hole 415; the housing is correspondingly provided with a hole seat 14; one end of the elastic steel needle is inserted into the insertion hole 415, and the other end is installed in the hole seat 14.

[0039] Refer to Figure 3 , Figure 4 and Figure 12 As shown, the housing 1 is further provided with a first shaft 11; the wire-holding disc 31 is sleeved on the first shaft 11; a first mounting groove 312 is provided on one side of the wire-holding disc 31; the telescopic wire reel assembly 3 further includes a coil spring 32 disposed in the first mounting groove 312; one end of the coil spring 32 is fixedly mounted to the first shaft 11, and the other end is fixedly mounted to the wire-holding disc 31; the coil spring 32 is used to provide the power for the wire-holding disc 31 to retract the wire;

[0040] Refer to Figure 3 , Figure 4 and Figure 12 As shown, the housing 1 is also provided with a second shaft 12; the ornament 41 is provided with a shaft hole 411 for fitting onto the second shaft 12 to realize the rotatable installation of the ornament 41 and the housing 1; the housing 1 is also provided with a mounting bracket 13; the limiting member 42 also includes a shaft portion 424; both ends of the shaft portion 424 are rotatably installed on the mounting bracket 13.

[0041] Refer to Figure 3 and Figure 4 As shown, the telescopic coil assembly 3 is also wound with a wire assembly 2; the wire assembly 2 further includes a wire body 21, an interface 22 located at one end of the wire body, and a terminal assembly 23 located at the other end of the wire body; one end of the interface 22 of the wire body 21 extends out of the housing 1; a second mounting groove 313 is provided on the other side of the wire clamping disc; the housing is provided with a mounting area 15 at a position corresponding to the second mounting groove 313; the terminal assembly includes a moving terminal 231 fixedly installed in the second mounting groove 313, a stationary terminal 232 fixedly installed in the mounting area 15, and a connecting spring piece provided between the moving terminal 231 and the stationary terminal 232.

[0042] This embodiment also provides a working principle of the telescopic line device, specifically as follows:

[0043] 1. When the line needs to be pulled out, pull the line body. The pulling force causes the line-clamping disc 31 to rotate counterclockwise. The clamping jaw 311 acts on the protrusion 412, and the swing piece 41 deflects clockwise. The pushing block 414 of the swing piece 41 inserts into the transmission groove 423 of the limiting member 42. The relatively shallow first limiting groove 421 of the limiting member 42 corresponds to the limiting block of the swing piece 41 (the two are far apart). The elastic steel needle is in a state of deflection to the left. At this time, the swing piece 41 is in the third maximum amplitude of clockwise deflection. The line-clamping disc 31 can smoothly and continuously rotate counterclockwise to perform the line feeding action. Figure 8 As shown.

[0044] When the pulled-out length is sufficient for use, the cable is released, and the cable-locking disc 31 rotates clockwise under the action of the coil spring. When the locking jaw 311 rotates back to the protrusion 412, under the elastic force of the elastic steel needle (the pendant tends to deflect back to its initial position), the protrusion 412 re-enters the locking jaw 311, and the limiting block 413 inserts into the first limiting groove 421 of the limiting member 42, pushing the block 414 out of the current transmission groove 423. During the insertion of the limiting block 413... The limiting block 413 first contacts the second inclined surface 4211 of the first limiting groove 421. Under the action of the second inclined surface 4211, the limiting member 42 rotates. When the limiting block 413 reaches the stop point (the first limiting groove 421 restricts the clockwise movement of the limiting block 413), the pushing block 414 aligns with the next transmission groove 423 (the two move away from each other). At this time, the swing member 41 is at the first maximum counterclockwise deflection, and the wire clamping disc 31 is stopped by the protrusion 412, thus stopping its movement. Figure 9 As shown.

[0045] 2. When the line needs to be retracted, pull the line again. The pulling force causes the wire-locking disc 31 to rotate counterclockwise. The locking jaw 311 acts on the protrusion 412, and the swing piece 41 deflects clockwise. The pushing block 414 of the swing piece 41 inserts into the transmission groove 423 of the limiting member 42. The limiting block 413 disengages from the first limiting groove 421. During the insertion of the pushing block 414, the pushing block 414 first contacts the first inclined surface 4231 of the transmission groove 423. Under the action of the first inclined surface 4231, the limiting member 42 rotates. When the pushing block 414 reaches the stop point (the transmission groove 423 restricts the counterclockwise movement of the pushing block 414), the relatively deep second limiting groove 421 of the limiting member 42 corresponds to the limiting block 413 of the swing piece 41 (the two move away from each other). The elastic steel needle is in a state of leftward deflection. At this time, the swing piece 41 is in the third maximum amplitude of clockwise deflection. Figure 10 As shown.

[0046] Then, the wire is released, and the wire-locking disc 31 rotates clockwise under the action of the coiling spring. When the locking slot 311 rotates to the protrusion 412 again, under the action of the elastic steel needle (the pendant tends to deflect back to its initial position), the protrusion 412 re-enters the locking slot 311, and the limiting block 413 inserts into the second limiting groove 422 of the limiting member 42. The pushing block 414 disengages from the current transmission groove 423. Because the second limiting groove 422 is deeper, the protrusion... Under the action of the latch 311, the ornament 41 continues to rotate counterclockwise until the protrusion 412 disengages from the latch 311 again; the limiting block 413 reaches the stop point (the second limiting groove 422 restricts the clockwise movement of the limiting block 413), the pushing block 414 aligns with the next transmission groove 423 (the two move away from each other), the ornament 41 is at the second maximum amplitude of counterclockwise deflection, and the wire-locking disc 31 can smoothly and continuously rotate clockwise to perform the wire-reeling action, such as Figure 11 As shown.

[0047] The above embodiments should not limit the present invention in any way. All technical solutions obtained by equivalent substitution or equivalent conversion fall within the protection scope of the present invention.

Claims

1. A telescopic cable device, characterized in that: The device includes a housing (1) and a telescopic spool assembly (3) rotatably mounted on the housing (1); a locking assembly (4) cooperating with the telescopic spool assembly (3) is also installed inside the housing (1); the telescopic spool assembly (3) includes a wire-locking disc (31); the wire-locking disc (31) has at least one circumferentially arranged slot (311); the locking assembly (4) includes a rotatably mounted ornament (41) on the housing (1); the ornament (41) has a protrusion (412) cooperating with the slot (311); in the initial position, the protrusion (412) of the ornament (41) corresponds directly to the slot (311); the ornament (41) also has a degree of freedom to deflect in a first direction and a degree of freedom to deflect in a second direction opposite to the first direction; wherein, the first direction is opposite to the first direction. The deflection direction of the wire-holding disc is opposite to the rotation direction of the wire-holding disc during wire feeding; the second direction is the deflection direction opposite to the rotation direction of the wire-holding disc during wire feeding; the locking assembly (4) also includes a limiting member (42) rotatably mounted on the housing (1); the limiting member (42) is used to limit the first maximum amplitude and the second maximum amplitude of the deflection of the pendulum (41) in the second direction; when the pendulum (41) is at the first maximum amplitude of the deflection in the second direction, the protrusion (412) is located in the bayonet (311) and is used to lock the wire-holding disc (31) so that the wire-holding disc (31) stops feeding; when the pendulum (41) is at the second maximum amplitude of the deflection in the second direction, the protrusion (412) disengages from the wire-holding disc (31) and is used to release the lock on the wire-holding disc (31); The limiting member (42) includes a limiting part; the limiting part is provided with a plurality of first limiting grooves (421) and second limiting grooves (422); the first limiting grooves (421) and second limiting grooves (422) surround the outer periphery of the limiting member (42) and are alternately arranged; the openings of the first limiting grooves (421) and second limiting grooves (422) face the first direction; the wire-locking disc (31) is provided with a limiting block (413); the first limiting groove (421) and the limiting block (413) cooperate to limit the first maximum amplitude of the deflection of the pendant (41) in the second direction; the second limiting groove (422) and the limiting block (413) cooperate to limit the second maximum amplitude of the deflection of the pendant (41) in the second direction; The limiting member (42) also includes a transmission part; the transmission part is provided with a plurality of transmission grooves (423); the opening of the transmission groove (423) faces the second direction; the transmission groove (423) surrounds the outer periphery of the limiting member (42); the wire clamping disc (31) is also provided with a push block (414); the transmission groove (423) and the push block (414) are correspondingly engaged, and the push block (414) is used to act on the transmission groove (423) under the drive of the swing member (41), so that the limiting member (42) rotates, thereby making the first limiting groove (421) correspond to the limiting block (413), or making the second limiting groove (422) correspond to the limiting block (413); The housing (1) is also provided with a mounting bracket (13); the limiting member (42) also includes a shaft (424); both ends of the shaft (424) are rotatably mounted on the mounting bracket (13).

2. The telescopic cable device according to claim 1, characterized in that: The transmission groove (423) cooperates with the push block (414) and is also used to limit the third maximum amplitude of the deflection of the pendant (41) in the first direction; when the pendant (41) is at the third maximum amplitude of the deflection in the first direction, the protrusion (412) disengages from the wire-locking disc and does not lock the wire-locking disc.

3. The telescopic cable device according to claim 1, characterized in that: The transmission groove (423) has a first inclined surface (4231); the first inclined surface (4231) is used to contact the push block (414) first when the push block (414) is inserted into the current transmission groove (423), and under the action of the push block (414), drive the limiting member (42) to rotate, so that the first limiting groove (421) or the second limiting groove (422) corresponds to the limiting block (413).

4. The telescopic cable device according to claim 3, characterized in that: The first limiting groove (421) has a second inclined surface (4211); the second inclined surface (4211) is used to contact the limiting block (413) first when the limiting block (413) is inserted into the first limiting groove (421), and under the action of the limiting block (413), drive the limiting member (42) to rotate, thereby switching the current transmission groove (423) corresponding to the pushing block (414) to the next transmission groove (423).

5. A telescopic cable device according to claim 1, characterized in that: The locking component (4) further includes a reset member (43); the reset member (43) is used to provide a force for the ornament to return to its initial position.

6. A telescopic cable device according to claim 5, characterized in that: The reset component (43) is an elastic steel needle; the swing component (41) is provided with a socket (415); the housing is provided with a corresponding hole seat (14); one end of the elastic steel needle is inserted into the socket (415), and the other end is installed in the hole seat (14).

7. A telescopic line device according to any one of claims 1-6, characterized in that: The housing (1) is also provided with a first shaft (11); the wire-holding disc (31) is sleeved on the first shaft (11); a first mounting groove (312) is provided on one side of the wire-holding disc (31); the telescopic wire reel assembly (3) also includes a coil spring (32) disposed in the first mounting groove (312); one end of the coil spring (32) is fixedly mounted to the first shaft (11), and the other end is fixedly mounted to the wire-holding disc (31); the coil spring (32) is used to provide power for the wire-holding disc (31) to reel in the wire.

8. A telescopic line device according to any one of claims 1-6, characterized in that: The housing (1) is also provided with a second shaft (12); the ornament (41) is provided with a shaft hole (411) for fitting onto the second shaft (12) to achieve rotatable installation of the ornament (41) and the housing (1).

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