Mobile power supply with self-telescopic structure

Abstract

A mobile power supply with a self-telescopic structure belongs to the technical field of mobile power supplies. According to the utility model, the problems of complex structure and large occupied space of the conventional mobile power supply adopting the cooperation of the torsion spring and the ratchet wheel to realize the telescoping of the wire rod are solved. Comprising a shell, a mobile power supply body and a self-telescopic structure, the mobile power supply body and the self-telescopic structure are arranged in the shell, a wire is wound outside a rotor, the other end of the wire extends out of the shell, the winding direction of the wire is opposite to the force storage direction of a torsional spring, a limiting claw is of an elastic cantilever structure, and one end of the limiting claw is fixed to the shell. And the other end is arranged in an annular groove on the outer side of the wire rod and is always attached to the outer side surface of the wire rod. The limiting claw is reliably matched with the three-section type guide rail, the occupied space is more compact, and a limiting and winding mechanism is greatly simplified.

Description

Technical Field

[0001] The utility model relates to a mobile power supply with a self - telescopic structure, belonging to the technical field of mobile power supplies. Background Art

[0002] A mobile power supply is a portable charger integrating power supply and charging functions. With the development of technology, people's demand for portable charging is getting higher and higher. Most of the existing mobile power supplies often only have a charging female port and do not come with their own wires. Some of the mobile power supplies with their own wires that have emerged in recent years often only have slots opened on the shell and place the wires in the slots. This structure damages the complete product appearance. There are also some products that design the self - contained wire as a function of a hand rope, which optimizes the product appearance to a certain extent. However, the way of designing the self - contained wire as a hand rope is not very practical in daily use and is instead prone to interfering with the normal use of the mobile power supply. And the wires that are often exposed naked are more likely to cause loss and external damage, increasing the failure rate of the product and affecting the user experience of consumers.

[0003] In order to better protect the power cord when the mobile power supply is not in use, there has also appeared in the prior art a structure that winds the wire into the mobile power supply, and when charging or power supply is needed, the wire is pulled out. In order to achieve the winding of the wire when not in use and ensure that the wire will not suddenly retract during use after being pulled out, the prior art generally adopts a telescopic structure that combines a torsion spring and a ratchet. However, this telescopic structure is relatively complex and occupies a large space, which will greatly affect the volume, weight and manufacturing cost of the mobile power supply. Therefore, there is an urgent need for a mobile power supply with a simpler structure, smaller occupied space and lighter weight that can realize the automatic telescoping of the wire. Summary of the Invention

[0004] The utility model is to solve the above - mentioned technical problems and further provides a mobile power supply with a self - telescopic structure.

[0005] The technical solution adopted by the utility model to solve the above - mentioned technical problems is as follows:

[0006] A mobile power supply with a self - telescopic structure includes a shell, a mobile power supply main body and a self - telescopic structure arranged inside the shell. The self - telescopic structure includes a limit claw, a rotating shaft, a rotor, a torsion spring, a runner and a wire. A fixed power interface in the mobile power supply main body is connected to one end of the wire through the rotating shaft. The two ends of the rotating shaft are respectively fixedly connected to the upper and lower side walls of the shell. The torsion spring is fixedly installed inside the runner. The runner is coaxially and rotatably sleeved on the lower part of the rotating shaft. The rotor is coaxially fixedly installed at the top of the runner and rotatably sleeved on the upper part of the rotor. The wire is wound around the outside of the rotor and the other end of the wire extends out of the shell. The winding direction of the wire is opposite to the force - storing direction of the torsion spring.

[0007] A ring groove is machined coaxially at the top of the runner. The limiting claw is of an elastic cantilever structure. One end of the limiting claw is fixed on the housing, and the other end is arranged in the ring groove outside the wire and always fits against the outer side surface of the wire.

[0008] A limiting protrusion structure is machined at the bottom of the other end of the limiting claw. A three-section guide rail is also machined at the top of the runner. The bottom surface of one end of the second section of the guide rail is lower than the bottom surface of the other end of the first section of the guide rail, and one end of the first section of the guide rail and the other end of the second section of the guide rail are respectively communicated with the ring groove. When the wire extends to the limit position, the limiting protrusion structure enters from the first section of the guide rail and is clamped on the step surface between the first section of the guide rail and the second section of the guide rail.

[0009] Further, each adjacent two sections of the three-section guide rail are arranged in a corner type, and the corner between the first section of the guide rail and the second section of the guide rail is arranged in the opposite direction to the corner between the second section of the guide rail and the third section of the guide rail.

[0010] Further, along the direction of the first to third sections of the guide rail, the bottom surface of the first section of the guide rail is of an uphill structure, and the bottom surface of the third section of the guide rail is of a downhill structure.

[0011] Further, three metal rings and two insulating rings are distributed alternately along the axial direction in the middle of the rotating shaft, and each metal ring is respectively connected with a wire. An elastic copper brush is arranged inside the rotor. When the rotating shaft rotates, the elastic copper brush always contacts the three metal rings to keep the circuit connected, and the wire is electrically connected to the elastic copper brush.

[0012] Further, at least two upright columns and at least two guide posts are fixedly installed at the top of the runner. Each upright column is machined with an internal thread. At least two mounting through holes and at least two guide holes are machined on the rotor. At least two of the mounting through holes are sleeved on at least two of the upright columns one by one and fixedly connected by screws, and at least two of the guide holes are sleeved on at least two of the guide posts one by one.

[0013] Further, a first limiting rib is machined on the inner wall of the upper side of the housing, and a second limiting rib is machined on the inner wall of the lower side of the housing. The two ends of the rotating shaft are respectively clamped in the first limiting rib and the second limiting rib.

[0014] Further, a clamping seat is fixedly installed inside the housing. A limiting convex rib is integrally machined at one end of the limiting claw, and one end of the limiting claw is clamped on the clamping seat through the limiting convex rib.

[0015] Further, the limiting claw is made of metal.

[0016] The utility model has the following effects compared with the prior art:

[0017] The self - telescopic structure adopted in the present utility model is simple, the cooperation between the rotating shaft - rotor combination and the limiting claw and the three - section guide rail is reliable, and the space occupation is more compact. Through the self - telescopic structure in the present utility model, the wire can be completely retracted into the internal part of the mobile power supply housing, thereby making the appearance of the product more concise and beautiful.

[0018] Through the self - telescopic structure, the automatic limiting and automatic storage functions of the wire can be realized, and the operation is convenient and fast.

[0019] Compared with the mobile power supply that realizes wire winding through the cooperation of a ratchet and a torsion spring in the prior art, the mobile power supply with a self - telescopic structure of the present utility model greatly simplifies the limiting and winding mechanisms, effectively reduces the production cost, improves the installation efficiency, and greatly reduces the wire winding failure rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a partial cross - sectional schematic view of the mobile power supply with a self - telescopic structure of the present utility model;

[0021] Figure 2 It is a partial exploded schematic view of the mobile power supply with a self - telescopic structure of the present utility model;

[0022] Figure 3 It is a partial three - dimensional structure schematic view of the housing;

[0023] Figure 4 It is a connection structure schematic view of the rotating shaft, the runner and the torsion spring;

[0024] Figure 5 It is a connection structure schematic view of the rotor and the wire;

[0025] Figure 6 It is a three - dimensional structure schematic view of the limiting claw;

[0026] Figure 7 It is a position structure schematic view of the runner and the limiting claw;

[0027] Figure 8 It is a partial enlarged schematic view of the three - section guide rail;

[0028] Figure 9 It is a schematic view of the initial position when the limiting claw is installed;

[0029] Figure 10 It is a schematic view after the limiting claw moves outward under the extrusion of the wire after the wire is installed;

[0030] Figure 11 It is a structure schematic view of the limiting claw sliding inward during the process of the wire extending;

[0031] Figure 12 It is a schematic view in the state where the wire is completely extended;

[0032] Figure 13 Schematic three-dimensional structure diagram (partial cross-section of the limit claw) when the limit protrusion structure enters the first section of the guide rail;

[0033] Figure 14 Schematic three-dimensional structure diagram (partial cross-section of the limit claw) when the limit protrusion structure enters the second section of the guide rail;

[0034] Figure 15 Schematic three-dimensional structure diagram (partial cross-section of the limit claw) when the limit protrusion structure enters the third section of the guide rail;

[0035] Figure 16 Schematic three-dimensional structure diagram (partial cross-section of the limit claw) when the limit protrusion structure re-enters the annular groove;

[0036] Figure 17 Schematic partial cross-section diagram of the rotating shaft;

[0037] Figure 18 Schematic connection structure diagram of the rotor and the rotating shaft;

[0038] Figure 19 Schematic connection structure diagram of the wire and the rotor.

[0039] In the figure:

[0040] 1. Housing; 1-1. Second limit rib; 1-3. Card seat; 2. Limit claw; 2-1. Limit protrusion structure; 2-2. Limit ridge; 3. Rotating shaft; 3-1. Metal ring; 3-2. Insulating ring; 4. Rotor; 4-1. Elastic brush; 5. Torsion spring; 6. Runner; 6-1. Annular groove; 6-2. Three-section guide rail; 6-21. First section of the guide rail; 6-22. Second section of the guide rail; 6-23. Third section of the guide rail; 6-3. Column; 6-4. Guide post; 7. Wire. Detailed implementation mode

[0041] Detailed implementation mode one: In combination with Figures 1 to 19 This implementation mode is described. A mobile power supply with a self-retractable structure includes a housing 1 and a mobile power supply main body and a self-retractable structure arranged inside the housing 1. The self-retractable structure includes a limit claw 2, a rotating shaft 3, a rotor 4, a torsion spring 5, a runner 6 and a wire. The fixed power interface in the mobile power supply main body is connected to one end of the wire through the rotating shaft 3. The two ends of the rotating shaft 3 are respectively fixedly connected to the upper and lower side walls of the housing 1. The torsion spring 5 is fixedly installed inside the runner 6. The runner 6 is coaxially and rotatably sleeved on the lower part of the rotating shaft 3. The rotor 4 is coaxially fixedly installed at the top of the runner 6 and rotatably sleeved on the upper part of the rotor 4. The wire is wound around the outside of the rotor 4 and the other end of the wire extends out of the housing 1. The winding direction of the wire is opposite to the energy storage direction of the torsion spring 5.

[0042] The top of the rotating wheel 6 is coaxially processed with an annular groove 6-1. The limiting claw 2 is an elastic cantilever structure. One end of the limiting claw 2 is fixed on the housing 1, and the other end is arranged in the annular groove 6-1 outside the wire and always fits the outer side of the wire.

[0043] A limiting protrusion structure 2-1 is processed at the bottom of the other end of the limiting claw 2, and a three-section guide rail 6-2 is also processed on the top of the rotating wheel 6, wherein the bottom surface of one end of the second section guide rail 6-22 is lower than the bottom surface of the other end of the first section guide rail 6-21, and one end of the first section guide rail 6-21 and the other end of the second section guide rail 6-22 are respectively connected to the annular groove 6-1. When the wire is extended to the limit position, the limiting protrusion structure 2-1 enters from the first section guide rail 6-21 and is clamped on the step surface between the first section guide rail 6-21 and the second section guide rail 6-22.

[0044] The mobile power supply body is the main structure for realizing the power supply and charging functions of the mobile power supply. It is not limited to wireless charging or limited charging. It is an existing conventional structure and will not be described in detail here.

[0045] The wire is the wire that comes with the mobile power supply and is used for charging or power supply.

[0046] A fixed power interface is provided on the circuit board in the main body of the mobile power source, and the fixed power interface is connected to one end of the wire through the rotating shaft 3, so that the wire can be connected to the external device and can charge the external device. The specific connection structure between the fixed power interface and the rotating shaft 3 and the connection structure between the rotating shaft 3 and the wire can be the existing conventional connection structure between the wire and the fixed power interface in the mobile power source that can realize automatic wire extension, and will not be repeated here.

[0047] The wire, the rotor 4 , the rotating wheel 6 and the torsion spring 5 rotate as a whole relative to the housing 1 and the rotating shaft 3 , and a torque for rotating relative to the housing 1 is obtained through the torsion spring 5 .

[0048] The winding direction of the wire is opposite to the force storage direction of the torsion spring 5, and the torque required for the self-contraction after the wire is completely pulled out will be obtained.

[0049] The three-section guide rail 6 - 2 is the limiting track of the limiting claw 2 .

[0050] The limiting claw 2 can be a spring structure.

[0051] The limiting protrusion structure 2 - 1 may be, for example, a cylindrical structure or any other columnar structure that can slide in the three-section guide rail 6 - 2 and has a guiding function.

[0052] The annular groove 6-1 machined on the runner 6 is used to limit the movement range of the other end of the limit claw 2. Since the limit claw 2 is an elastic cantilever structure, the other end of the limit claw 2 can slide in the annular groove 6-1 during the process of the wire extending, and the other end of the limit claw 2 always fits against the outer side of the wire, thereby realizing the positive feedback adjustment composed of its length and the wire. That is, the limit claw 2 slides in the annular groove 6-1 of the runner 6 through the change of the coil diameter when the wire is wound. When there is more wire, the diameter of the coil wound is larger. As the wire is pulled out, the diameter of the wire wound around the rotor 4 decreases, and the other end of the limit claw 2 slides inward relative to the runner 6. When it slides to the specified position, the limit claw 2 is restricted within the three-section guide rail 6-2 to limit the rotation of the runner 6.

[0053] Working principle of the self-retractable structure:

[0054] When power supply or charging is required, the operator pulls out the wire, drives the rotor 4 and the runner 6 to rotate clockwise through the traction of the wire, and at the same time the torsion spring 5 starts to store energy. As the wire is pulled out, the diameter of the coil wound by the wire becomes smaller, and the other end of the limit claw 2 slides towards the axis;

[0055] When the wound wire is about to run out, the limit protrusion structure 2-1 on the limit claw 2 enters the second-section guide rail 6-22 along the first-section guide rail 6-21. When the limit protrusion structure 2-1 at the other end of the limit claw 2 slides to the step surface between the first-section guide rail 6-21 and the second-section guide rail 6-22, it is the limit position of the wire extension. At this time, the operator stops pulling the wire, and the runner 6 performs a counterclockwise rotation action under the rebound action of the torsion spring 5, so that the limit protrusion structure 2-1 is stuck on the step surface between the first-section guide rail 6-21 and the second-section guide rail 6-22 to complete the locking of the wire;

[0056] When the wire needs to be retracted, the operator pulls the wire again, and the limit protrusion structure 2-1 on the limit claw 2 returns to the annular groove 6-1 of the runner 6 along the third-section track. At this time, the operator releases the hand, and the torsion spring 5 is released, driving the runner 6 to rotate counterclockwise to complete the wire retraction.

[0057] The self-retractable structure adopted in the present utility model is simple, the combination of the rotating shaft 3 and the rotor 4 and the cooperation between the limit claw 2 and the three-section guide rail 6-2 are reliable, and the space occupation is more compact. Through the self-retractable structure in the present utility model, the wire can be completely retracted into the internal part of the mobile power supply housing 1, thereby making the product appearance more concise and beautiful.

[0058] The automatic limit and automatic storage functions of the wire can be realized through the self-retractable structure, and the operation is convenient and fast.

[0059] Compared with the mobile power supply in the prior art that realizes wire winding by cooperating with a ratchet and a torsion spring 5, the mobile power supply with a self-retractable structure of the utility model greatly simplifies the limiting and winding mechanism, effectively reduces the production cost, improves the installation efficiency, and greatly reduces the failure rate of wire winding.

[0060] Each adjacent two sections of the three-section guide rail 6-2 are arranged at an angle, and the angle between the first section guide rail 6-21 and the second section guide rail 6-22 is arranged opposite to the angle between the second section guide rail 6-22 and the third section guide rail 6-23. With such a design, when the wound wire is about to be extended to the limit position, the limiting protrusion structure 2-1 enters the second section guide rail 6-22 along the first section guide rail 6-21, and due to the height difference between the two sections of the guide rail, after entering the second section guide rail 6-22, the rotating wheel 6 is locked so that it no longer rotates, thereby effectively preventing the wire from being stretched excessively and damaging the effective connection between the wire and the rotating shaft 3.

[0061] Along the direction of the first section to the third section guide rail 6-23, the bottom surface of the first section guide rail 6-21 is an uphill structure, and the bottom surface of the third section guide rail 6-23 is a downhill structure. Such a design facilitates the sliding in of the limit claw 2 when it is about to be limited and the sliding out when it is separated from the limit.

[0062] Three layers of metal rings 3-1 and two layers of insulating rings 3-2 are staggered along the axial direction of the middle part of the rotating shaft 3, and each layer of metal rings 3-1 is connected to a wire. A copper elastic brush 4-1 is arranged inside the rotor 4. When the rotating shaft 3 rotates, the elastic brush 4-1 is always in contact with the three layers of metal rings 3-1 to maintain the circuit path, and the wire is electrically connected to the elastic brush 4-1. With this design, the three layers of metal rings 3-1 on the rotating shaft 3 are connected to the mobile power supply body through three wires, and the wire is electrically connected to the mobile power supply body through the elastic brush 4-1 and the rotating shaft 3. In order to achieve the situation where the three layers of metal rings 3-1 and the two layers of insulating rings 3-2 are staggered and each layer of metal rings 3-1 can be normally connected to the wire, the three layers of metal rings 3-1 and the two layers of insulating rings 3-2 can be arranged in layers along the radial direction, and the tops of each layer of metal rings 3-1 and each layer of insulating rings 3-2 are staggered along the axial direction of the rotating shaft 3. Along the radial direction of the rotating shaft 3, the diameters of the three layers of metal rings 3-1 are the same and are all larger than the diameters of the two layers of insulating rings 3-2.

[0063] At least two upright columns 6-3 and at least two guide columns 6-4 are fixedly installed on the top of the runner 6. Internal threads are machined on each upright column 6-3. At least two mounting through holes and at least two guide holes are machined on the rotor 4. At least two of the mounting through holes are sleeved on at least two upright columns 6-3 one by one and fixedly connected by screws. At least two of the guide holes are sleeved on at least two guide columns 6-4 one by one. With such a design, the guiding of the rotor 4 is realized through at least two guide holes, and the fixed connection between the rotor 4 and the runner 6 is realized through at least two upright columns 6-3 and the mounting through holes.

[0064] The upper inner wall of the housing 1 is machined with a first limiting rib, and the lower inner wall of the housing 1 is machined with a second limiting rib 1-1. The two ends of the rotating shaft 3 are correspondingly clamped in the first limiting rib and the second limiting rib 1-1. With such a design, the circumferential limiting of the rotating shaft 3 is realized through the first limiting rib and the second limiting rib 1-1, and the axial limiting of the rotating shaft 3 is realized through the upper inner wall surface and the lower inner wall surface of the housing 1.

[0065] A clamping seat 1-2 is fixedly installed inside the housing 1. One end of the limiting claw 2 is integrally machined with a limiting convex rib 2-2, and one end of the limiting claw 2 is clamped on the clamping seat 1-2 through the limiting convex rib 2-2. With such a design, the fixing of one end of the limiting claw 2 is realized through the cooperation of the clamping seat 1-2 and the limiting convex rib 2-2.

[0066] The limiting claw 2 is made of metal.

Claims

1. A mobile power source with a self-retractable structure, characterized in that: The invention comprises a housing (1) and a mobile power source main body and a self-retractable structure arranged inside the housing (1), wherein the self-retractable structure comprises a limit claw (2), a rotating shaft (3), a rotor (4), a torsion spring (5), a rotating wheel (6) and a wire, wherein a fixed power interface in the mobile power source main body is connected to one end of the wire via the rotating shaft (3), the two ends of the rotating shaft (3) are respectively fixedly connected to the upper and lower side walls of the housing (1), the torsion spring (5) is fixedly mounted inside the rotating wheel (6), the rotating wheel (6) is coaxially and rotatably mounted on the lower part of the rotating shaft (3), the rotor (4) is coaxially fixedly mounted on the top of the rotating wheel (6) and rotatably mounted on the upper part of the rotor (4), the wire is wound around the outside of the rotor (4) and the other end of the wire is extended out of the housing (1), the winding direction of the wire is opposite to the force storage direction of the torsion spring (5), The top of the rotating wheel (6) is coaxially machined with an annular groove (6-1); the limiting claw (2) is an elastic cantilever structure; one end of the limiting claw (2) is fixed on the housing (1); the other end is arranged in the annular groove (6-1) outside the wire and is always arranged in contact with the outer side surface of the wire. A limiting protrusion structure (2-1) is processed at the bottom of the other end of the limiting claw (2), and a three-section guide rail (6-2) is also processed at the top of the rotating wheel (6), wherein the bottom surface of one end of the second section guide rail (6-22) is arranged lower than the bottom surface of the other end of the first section guide rail (6-21), and one end of the first section guide rail (6-21) and the other end of the second section guide rail (6-22) are respectively connected to the annular groove (6-1), and when the wire is extended to the limit position, the limiting protrusion structure (2-1) enters from the first section guide rail (6-21) and is clamped on the step surface between the first section guide rail (6-21) and the second section guide rail (6-22).

2. The mobile power source with a self-retractable structure according to claim 1, characterized in that: Each adjacent two sections of the three-section guide rail (6-2) are arranged at an angle, and the angle between the first section of the guide rail (6-21) and the second section of the guide rail (6-22) is arranged in the opposite direction to the angle between the second section of the guide rail (6-22) and the third section of the guide rail (6-23).

3. The mobile power source with a self-retractable structure according to claim 2, characterized in that: Along the direction from the first section to the third section of the guide rail (6-23), the bottom surface of the first section of the guide rail (6-21) is an upslope structure, and the bottom surface of the third section of the guide rail (6-23) is a downslope structure.

4. The mobile power source with a self-retractable structure according to claim 1, characterized in that: Three layers of metal rings (3-1) and two layers of insulating rings (3-2) are staggeredly distributed in the middle of the rotating shaft (3) along its axial direction, and each layer of the metal rings (3-1) is respectively connected to a wire. A copper elastic brush (4-1) is arranged inside the rotor (4). When the rotating shaft (3) rotates, the elastic brush (4-1) is always in contact with the three layers of metal rings (3-1) to maintain a circuit path, and the wire is electrically connected to the elastic brush (4-1).

5. The mobile power source with a self-retractable structure according to claim 1, characterized in that: At least two columns (6-3) and at least two guide columns (6-4) are fixedly mounted on the top of the rotating wheel (6), each column (6-3) is processed with an internal thread, and at least two mounting through holes and at least two guide holes are processed on the rotor (4), wherein the at least two mounting through holes are respectively mounted on the at least two columns (6-3) and fixedly connected by screws, and the at least two guide holes are respectively mounted on the at least two guide columns (6-4).

6. The mobile power source with a self-retractable structure according to claim 1, characterized in that: The upper inner wall of the shell (1) is processed with a first limiting rib, and the lower inner wall of the shell (1) is processed with a second limiting rib (1-1), and the two ends of the rotating shaft (3) are correspondingly clamped in the first limiting rib and the second limiting rib (1-1).

7. The mobile power source with a self-retractable structure according to claim 1, characterized in that: A clamping seat (1-2) is fixedly mounted inside the housing (1); one end of the limiting claw (2) is integrally processed with a limiting ridge (2-2), and one end of the limiting claw (2) is clamped on the clamping seat (1-2) via the limiting ridge (2-2).

8. The mobile power source with a self-retractable structure according to claim 1, characterized in that: The limiting claw (2) is made of metal.

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