Stretchable wire device

Abstract

The utility model discloses a telescopic line device, and relates to the technical field of data lines. Comprising an upper cover terminal injection molding part, a conducting ring, a reel and a bottom cover, a metal center shaft is arranged in the center in the bottom cover, the conducting ring is in positioning fit with the reel, the metal center shaft penetrates through the center of the reel to coincide with the upper cover terminal injection molding part, and the upper cover terminal injection molding part and the bottom cover are buckled and fixed. The electric connector is reasonable in structural design and convenient and reliable to use, has the advantages of efficient electric conduction, accurate positioning, stable connection, insulation blocking and the like, and remarkably improves the assembly efficiency, the product stability and the service life.

Description

TECHNICAL FIELD

[0001] The utility model relates to data line technical field, concretely relates to a telescopic line device. BACKGROUND

[0002] At present, the shell of the telescopic line device for data line storage is integrally formed by upper and lower covers, this mode reduces the cost, but the functionality, durability, maintenance convenience and user experience are greatly discounted, in addition, the contact surface of the rotating table of the traditional product uses the PCB board gold finger technology, but the thickness of the gold finger contact area is very thin, the wear resistance is poor, and the PCB gold finger is damaged after long time rotation and friction, and the phenomena such as poor contact and electrical damage occur.

[0003] In summary, the utility model designs a telescopic line device which is more convenient and reliable to use. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies in the prior art, the utility model aims to provide a telescopic line device, which has reasonable structure design, is convenient and reliable to use, has the advantages of efficient conduction, accurate positioning, stable connection and insulation blocking, and significantly improves the assembly efficiency, product stability and service life.

[0005] In order to achieve the above-mentioned purpose, the utility model is implemented by the following technical scheme: a telescopic line device, comprising an upper cover terminal injection molding part, a conductive ring, a winding wheel and a bottom cover, a metal center shaft is arranged in the center of the bottom cover, the conductive ring is positioned and matched with the winding wheel, the metal center shaft passes through the center of the winding wheel and coincides with the upper cover terminal injection molding part, and the upper cover terminal injection molding part is fixedly buckled with the bottom cover.

[0006] As a preferred, the upper cover terminal injection molding part comprises a plastic part and a spring piece terminal, the plastic part and the spring piece terminal are integrally formed, the bottom of the injection molding part is provided with 360° balanced buckling claws, and the buckling claws are buckled with the buckle holes on the bottom cover.

[0007] As a preferred, the spring piece terminal comprises five groups of input channels, three contact bumps are arranged on each input channel, the contact bumps are overlapped on the same metal ring of the winding wheel to form a rotatable friction connection transmission.

[0008] As a preferred, the conductive ring comprises an integrally injection molded conductive ring metal sheet and a conductive ring injection molding part, and the conductive ring metal sheet has five groups of output channels.

[0009] As a preferred, the back surface of the conductive ring injection molding part is provided with 360° positioning holes in the periphery and a foolproof concave notch in the center.

[0010] As preferred, the front face of the winding wheel is provided with positioning plum blossom columns around 360 degrees, and a foolproof convex block is arranged in the middle, which is positioned and matched with a foolproof concave notch of the conductive ring injection molding part.

[0011] As preferred, the back face of the winding wheel is provided with a wire clamping mechanism wall, a wire welding area and a spring mounting wall, the wire clamping mechanism wall is provided with two walls with equal height, a gap smaller than the thickness of the wire is arranged between the two walls for mounting the wire, the spring mounting wall is provided with two walls with different shapes, one is a convex wall and the other is a concave wall, a spring is arranged between the convex wall and the concave wall, and a recessed wire welding area is arranged between the wire clamping mechanism wall and the spring mounting wall; the center of the metal center shaft is provided with a shaft notch, and the shaft notch is clamped and fixed with a crossbar in the middle of the spring.

[0012] As preferred, the inside of the upper cover terminal injection molding part is provided with a brake pad through a brake pad mounting position, and the brake head of the brake pad is slidably matched with the brake guide rail of the winding wheel.

[0013] The utility model discloses beneficial effect:

[0014] 1, the upper cover terminal injection molding part of the utility model is one-step formed through injection molding, and does not need secondary assembly, saves working hours, reduces cost and improves product quality.

[0015] 2, the elastic sheet terminal and the conductive ring adopt high-conductivity copper stamping process, have five input / output channels, increase the contact area, avoid heating and aging, and improve product stability and wear resistance.

[0016] 3, the conductive ring injection molding part and the winding wheel are positioned and matched through a foolproof concave notch and a foolproof convex block, so that assembly precision is ensured.

[0017] 4, the wire clamping mechanism wall and the spring mounting wall of the winding wheel are reasonably designed, so that the wire is tightly fixed, and the soldering point does not affect the rotation smoothness.

[0018] 5, the inside of the upper cover terminal injection molding part is provided with a brake pad, and the brake head of the brake pad is slidably matched with the brake guide rail of the winding wheel, so that use safety is enhanced. DRAWINGS

[0019] The utility model will be described in detail in combination with the drawings and specific embodiments;

[0020] Figure 1 It is the structural schematic diagram of the utility model;

[0021] Figure 2It is the exploded view of the utility model;

[0022] Figure 3 It is the exploded view of the upper cover terminal injection molding part of the utility model;

[0023] Figure 4 It is the contact bump schematic view of the utility model;

[0024] Figure 5 It is the conductive ring exploded schematic view of the utility model;

[0025] Figure 6 It is the elastic sheet terminal and the conductive ring metal sheet cooperation schematic view of the utility model;

[0026] Figure 7 It is the structure schematic view of the winding wheel of the utility model;

[0027] Figure 8 It is the conductive ring injection molding part schematic view of the utility model;

[0028] Figure 9 It is the wire installation schematic view of the utility model;

[0029] Figure 10 It is the clockwork spring installation schematic view of the utility model;

[0030] Figure 11 It is the brake pad installation schematic view of the utility model. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0032] Referring to Figures 1-11 , the specific embodiment adopts the following technical scheme: a telescopic wire device, comprising an upper cover terminal injection molding part 1, a conductive ring 2, a winding wheel 3 and a bottom cover 4, a metal center shaft 5 is arranged in the center of the bottom cover 4, the conductive ring 2 is positioned and matched with the winding wheel 3, the metal center shaft 5 passes through the center of the winding wheel 3 and coincides with the upper cover terminal injection molding part 1, and the upper cover terminal injection molding part 1 is fixedly buckled with the bottom cover 4. The metal center shaft 5 is made of high-strength alloy vehicle manufacturing process and is pre-buried in the plastic inside the bottom cover. The process structure can ensure that the winding wheel has sufficient strength and wear resistance advantage under the condition of high-speed rotation and long-time overload rotation.

[0033] It is worth noting that the upper cover terminal injection molding part 1 comprises a plastic part 11 and an elastic sheet terminal 12, the plastic part 11 and the elastic sheet terminal 12 are integrally formed, the bottom of the injection molding part 1 is provided with a 360° balanced buckle claw 13, and the buckle claw 13 is buckled with the buckle hole 41 on the bottom cover 4.

[0034] It is worth noting that the said elastic sheet terminal 12 includes five groups of input channels 121, and each input channel 121 is provided with three contact bumps 122, which are overlapped on the same metal ring of the winding wheel 3 to form a rotatable friction (rotatable friction area 36) connection transmission.

[0035] It is worth noting that the said conductive ring 2 includes an integrally injection molded conductive ring metal sheet 21 and a conductive ring injection molding part 22, the conductive ring metal sheet 21 has five groups of output channels 211, and adopts a high-conductivity copper stamping process to simultaneously have the output of five groups of channels, and is stamped (namely, the five groups of channels corresponding to Vbus, CC, D+, D-, and GND) into shape. This process structure can improve the strength of the product, has good wear resistance, and the rotating friction life can reach 20,000 times or more.

[0036] It is worth noting that the said elastic sheet terminal 12 adopts a high-conductivity copper stamping process, which can simultaneously have the input of five groups of channels, and is stamped into shape at one time (namely, the five groups of channels of Vbus, CC, D+, D-, and GND) to increase the stability and cost of the product. Among them, Vbus and GND are the positive and negative electrodes of the power supply, and the corresponding terminal is widened to design a conductor. Each group of channels is designed with three contact bumps to increase the contact area and avoid heating and aging during use.

[0037] It is worth noting that the back surface of the said conductive ring injection molding part 22 is provided with a positioning hole 221 around 360°, and a foolproof concave notch 222 is arranged at the center. The position is first determined by the convex block of the winding wheel and the concave notch of the conductive ring, and then tightly assembled with the positioning column of the winding wheel. The conductive ring injection molding part 22 is molded by high-strength industrial plastic and metal ring MOLDING. This process molds the metal ring of five groups of channels at one time, which can improve the assembly efficiency, reduce the assembly cost, improve the product quality, and has strong consistency for each group of channels. The gap between the rings of each group of channels is filled with plastic to form an insulating blocking wall.

[0038] It is worth noting that the front surface of the said winding wheel 3 is provided with a positioning plum blossom column 31 around 360°, and a foolproof convex block 32 is arranged in the middle. The foolproof convex block 32 is positioned and matched with the foolproof concave notch 222 of the conductive ring injection molding part 22. The position is first determined by the convex block of the winding wheel and the concave notch of the conductive ring, and then tightly assembled with the positioning hole of the conductive ring.

[0039] Notably, the reverse side of the winding wheel 3 is provided with a wire clamping mechanism wall 33, a wire welding area 34 and a spring mounting wall 35. The wire clamping mechanism wall 33 is provided with two walls with equal height, and a gap smaller than the thickness of the wire 6 is arranged between the two walls for mounting the wire. The spring mounting wall 35 is provided with two walls with different shapes, one is a convex wall 351, and the other is a concave wall 352. The convex wall 351 and the concave wall 352 are inlaid with a spring 7. The wire clamping mechanism wall 33 and the spring mounting wall 35 are provided with a recessed wire welding area 34. After the wire is welded, the tin point will be higher than the plane. A space is also needed between the wire outlet and the welding point for wire arrangement. The recessed area can meet the two deficiencies and make the tin welding point not higher than the winding plane, without affecting the smooth degree of the wire rotation.

[0040] In addition, the brake pad 8 is mounted in the brake pad mounting position on the inner side of the upper cover terminal injection molding part 1. The brake head 81 of the brake pad 8 is in sliding fit with the brake guide rail 37 of the winding wheel.

[0041] The upper cover terminal injection molding part 1 of the embodiment is formed by one-step injection molding, without the need for secondary assembly processing, saving assembly time, reducing cost, improving product quality, and 360-degree balanced reverse buckling design, which is completely buckled with the lower cover buckle hole without dead angle. The integrity of the product is guaranteed.

[0042] The basic principles and main features of the utility model and the advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model can also have various changes and improvements, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A retracting cord device, characterized in that, It includes upper cover terminal injection molding piece (1), conductive ring (2), winding wheel (3) and bottom cover (4), the center of bottom cover (4) is provided with metal center shaft (5), conductive ring (2) is positioned with winding wheel (3), metal center shaft (5) passes through the center of winding wheel (3) and coincides with upper cover terminal injection molding piece (1), upper cover terminal injection molding piece (1) is fixed with bottom cover (4) buckle.

2. A retracting cord device according to claim 1, wherein The upper cover terminal injection molding piece (1) includes a plastic part (11) and a spring terminal (12), the plastic part (11) is integrally formed with the spring terminal (12), and the bottom of the injection molding piece (1) is provided with a 360° balanced buckle claw (13) which is buckled with a buckle hole (41) on the bottom cover (4).

3. A retracting cord device according to claim 2, wherein The spring terminal (12) includes five groups of input channels (121), each input channel (121) is provided with three contact bumps (122), and the contact bumps (122) are overlapped on the same metal ring of the winding wheel (3) to form a rotatable friction connection transmission.

4. A retracting cord device according to claim 1, wherein The conductive ring (2) includes an integrally injection molded conductive ring metal sheet (21) and a conductive ring injection molding piece (22), and the conductive ring metal sheet (21) has five groups of output channels (211).

5. A retracting cord device according to claim 4, wherein The back of the conductive ring injection molding piece (22) is provided with a positioning hole (221) around 360°, and a foolproof concave notch (222) is arranged at the center.

6. A retracting cord device according to claim 1, wherein The front of the winding wheel (3) is provided with a positioning plum blossom column (31) around 360°, and a foolproof convex block (32) is arranged in the middle, which is positioned and matched with the foolproof concave notch (222) of the conductive ring injection molding piece (22).

7. A retracting cord device according to claim 1, wherein The back of the winding wheel (3) is provided with a wire clamping mechanism wall (33), a wire welding area (34) and a spring installation wall (35), the wire clamping mechanism wall (33) is provided with two walls with equal height, a gap smaller than the thickness of the wire (6) is arranged between the two walls for installing the wire, the spring installation wall (35) is two walls with different shapes, one is convex wall (351), and the other is concave wall (352), a spring (7) is arranged between the convex wall (351) and the concave wall (352), and a recessed wire welding area (34) is arranged between the wire clamping mechanism wall (33) and the spring installation wall (35).

8. A retracting cord device according to claim 1, wherein The center of the metal center shaft (5) is provided with a shaft notch (51), and the shaft notch (51) is clamped and fixed with the crossbar (71) in the middle of the spring (7). The inside of the upper cover terminal injection molding piece (1) is provided with a brake pad (8) through a brake pad mounting position, and the brake head (81) of the brake pad (8) is slidably matched with the brake guide rail of the winding wheel.

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