A charging treasure with lighting function and its production process

Abstract

The present invention provides a power bank with lighting function and a production process thereof. The power bank with lighting function comprises a shell and a power bank body located in the shell. The power bank body is provided with LED lamp beads and a start button; the shell comprises a front shell and a rear shell that are interlocked, a metal nut is provided in the rear shell, and a screw is provided on the front shell; a blind hole is provided in the metal nut, and an internal thread and at least two grooves are provided in the blind hole, and the groove divides the internal thread. The LED lamp beads enable the power bank to have lighting capabilities and improve the user experience; the metal nut is built into the rear shell, so that it can withstand a greater locking force (torque when locking the screw), and it is not easy to cause the problem of slipping and cracking of the rear shell when locking the screw; the metal nut is injection molded together with the rear shell, which saves the hot pressing step of the nut, is conducive to improving production efficiency, and avoids the problem of defective products produced in the hot pressing nut process.

Description

Technical Field

[0001] The present invention relates to the field of new energy technology, and in particular to a power bank with lighting function and a production process thereof. Background Art

[0002] As a mobile power source, power banks can temporarily power mobile electrical devices (such as mobile phones, tablets, watches, etc.) in outdoor environments.

[0003] Power banks are small and easy to carry, which also results in a compact structure of internal components. To ensure a stable connection between the shells, the front and back shells need to be locked with screws. Since the shell of the power bank is an injection molded part, a screw column for locking the screws will be formed on the back shell during injection molding. Since the screw column is formed during injection molding, it is made of plastic and has poor rigidity. The torque generated when tightening the screws can easily lead to problems such as slipping and cracking of the screw column.

[0004] The existing solution is to set a copper nut 22 on the housing 21 by hot pressing after the rear housing is injection molded to solve the above problem, such as Figure 1 However, due to the small size of the power bank, the shell 21 is easily deformed and cracked when the copper nut 22 is hot-pressed, resulting in a high defect rate. In addition, the addition of a hot-pressing process after injection molding also lengthens the production process of the power bank, which is not conducive to mass production.

[0005] Therefore, it is necessary to improve the shell and production process of the existing power bank. Summary of the invention

[0006] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a power bank with lighting function and a production process thereof.

[0007] The objective of the present invention is achieved through the following technical solutions:

[0008] A power bank with lighting function, comprising: a shell and a power bank body located in the shell;

[0009] The power bank body is provided with LED lamp beads and a start button;

[0010] The housing comprises a front housing and a rear housing which are buckled together, a metal nut is arranged in the rear housing, a screw corresponding to the metal nut is arranged on the front housing, and the screw is threadedly connected with the metal nut so that the front housing is fixed to the rear housing;

[0011] The metal nut is provided with a blind hole, wherein the blind hole is provided with an internal thread and at least two grooves, the internal thread is used for threaded connection with the screw, and the groove extends along the axis of the blind hole to divide the internal thread.

[0012] In one of the embodiments, a plurality of anti-slip rings are provided on the outer wall of the metal nut, and each of the anti-slip rings has external teeth.

[0013] In one of the embodiments, a fixing column is provided at the position where the rear shell is connected to the metal nut, and a reinforcing rib is provided on the outer side of the fixing column.

[0014] A power bank production process is used to make the power bank with lighting function. An injection mold for making the back shell is provided, which includes: an upper mold, a lower mold, a rotating shaft and a manipulator for picking up the back shell. The rotating shaft is rotatably arranged in the lower mold. A limiting rod for supporting the metal nut is provided on the rotating shaft. The limiting rod is provided with an external thread and two avoidance parts. The external thread is used to be threadedly connected with the metal nut. The avoidance part extends along the direction of the axis of the rotating shaft to divide the external thread.

[0015] The production steps of the power bank with lighting function are as follows:

[0016] Step 1: The upper die is separated from the lower die, and the robot puts the metal nut on the limit rod;

[0017] Step 2: Drive the shaft to rotate forward to allow the external thread to engage with the internal thread to fix the metal nut;

[0018] Step 3: The upper mold and the lower mold are closed, and the injection molding machine injects the injection liquid into the cavity of the injection mold, and the injection liquid and the metal nut are integrally formed to obtain the back shell;

[0019] Step 4: The upper mold is separated from the lower mold, and the drive shaft is rotated in the opposite direction to separate the external thread from the internal thread, and then the robot picks up the formed back shell;

[0020] Step 5: Place the power bank body in the outer shell composed of the rear shell and the front shell, screw the screws and the metal nuts together to obtain a power bank with lighting function.

[0021] In one of the embodiments, when the metal nut is put on the limiting rod in step 1, if the metal nut is not stuck, the metal nut is directly pushed to be put on the limiting rod; if the metal nut is stuck, the pushing action is stopped, the metal nut is rotated to align the groove with the external thread, and then the metal nut is continued to be pushed until the metal nut is put on the limiting rod.

[0022] In one embodiment, the length of the limiting rod is smaller than the depth of the blind hole.

[0023] In one embodiment, the two avoidance portions are parallel to each other, and a distance between the two avoidance portions is smaller than a diameter of the blind hole.

[0024] In one of the embodiments, a boss is provided on the rotating shaft at a position in contact with the metal nut.

[0025] In one of the embodiments, a mark is provided on the end of the metal nut.

[0026] The above-mentioned power bank with lighting function and its production process have the following advantages:

[0027] 1. LED lamp beads enable the power bank to have lighting capabilities, improving the user experience;

[0028] 2. The back shell is equipped with a metal nut, which can withstand a greater tightening force (torque when tightening the screw), and it is not easy to cause the screw to slip or the back shell to crack when tightening the screw;

[0029] 3. The metal nut is injection molded together with the back shell, which saves the hot pressing step of the nut, is conducive to improving production efficiency, and avoids the problem of defective products in the hot pressing nut process. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 It is a schematic diagram of the cooperation between the housing and the copper nut in the prior art;

[0032] Figure 2 It is a schematic diagram of the structure of a power bank with lighting function;

[0033] Figure 3 This is a schematic diagram of the disassembly of the back shell and the metal nut;

[0034] Figure 4 is a partial cross-sectional view of a metal nut;

[0035] Figure 5 is a schematic diagram of the distribution of grooves;

[0036] Figure 6 It is a structural schematic diagram of the injection mold;

[0037] Figure 7 It is a structural schematic diagram of the lower mold;

[0038] Figure 8 for Figure 7 An enlarged schematic diagram at A;

[0039] Fig. 9It is a schematic diagram of the cooperation between the metal nut and the limiting rod;

[0040] Fig.10 is a structural schematic diagram of the rotating shaft;

[0041] Fig.11 Figure 1 is the matching state diagram of the limit rod and the metal nut;

[0042] Fig.12 Figure (2) shows the matching status of the limit rod and the metal nut. DETAILED DESCRIPTION

[0043] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly understood.

[0044] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0046] See also Figure 2 The present invention provides a power bank 10 with a lighting function, which includes: a shell 11 and a power bank body (not shown) located in the shell 11.

[0047] See also Figure 2 The power bank body is provided with an LED lamp bead 12 and a start button 13, and the housing 11 is provided with a mounting hole matching the LED lamp bead 12. Pressing the start button 13 is used to light up or extinguish the LED lamp bead 12, so that the power bank has a lighting function.

[0048] See also Figure 2 and Figure 3The housing 11 includes a front housing 100 and a rear housing 200 that fit together. A metal nut 300 is disposed in the rear housing 200. A screw 400 corresponding to the metal nut 300 is disposed on the front housing 100. The screw 400 is threadedly connected to the metal nut 300 to fix the front housing 100 on the rear housing 200.

[0049] See also Figure 4 and Figure 5 The metal nut 300 is provided with a blind hole 310 , and the blind hole 310 is provided with an internal thread 311 and at least two grooves 312 . The grooves 312 extend along the axis of the blind hole 310 to divide the internal thread 311 .

[0050] Among them, the internal thread 311 in the blind hole 310 is used for threaded connection with the screw 400, and the groove 312 divides the internal thread 311 along the direction of the axial line of the blind hole 310. At this time, the part with the internal thread 311 in the blind hole 310 can still be threadedly connected with the screw 400, and the position of the groove 312 forms an avoidance area that does not contact the screw 400.

[0051] It should be noted that the front shell 100 and the rear shell 200 are locked together by screws 400, and both the front shell 100 and the rear shell 200 are injection molded parts. In the original process, a screw column is set at the rear shell 200 to cooperate with the screw 400. Due to the poor rigidity of the plastic material, it is easy to cause the problem of slipping and cracking of the screw column. In order to ensure sufficient locking force, it is necessary to set a metal nut 300 on the rear shell 200 to replace the screw column. There are mainly two ways to build the metal nut 300 into the rear shell 200:

[0052] 1. After the back shell 200 is injection molded, the metal nut 300 is pressed into the back shell 200 by hot pressing. However, this hot pressing method requires the metal nut 300 to be heated to the melting point of the plastic, and the position in contact with the metal nut 300 is melted when pressed in. Since the product involved in the present invention is a power bank, its back shell 200 is a thin structure, and the hot pressing process cannot accurately control the range of plastic melting, which easily leads to obvious deformation and cracking of the surrounding position of the metal nut 300, increasing the occurrence rate of defective products.

[0053] 2. During the injection molding process of the back shell 200, the metal nut 300 is first placed in the mold, so that when the back shell is formed, the metal nut 300 is directly embedded in the back shell 200. However, the metal nut 300 is not connected to the mold, and during the injection molding, the melted plastic (injection liquid) is pressurized into the mold cavity. The high density and high pressure of the injection liquid will impact the metal nut 300, causing its position to shift, resulting in the injection liquid infiltrating into the metal nut 300, causing the metal nut 300 to be blocked and unable to be screwed with the screw 400.

[0054] In order to solve the above problems, improve the manufacturing quality of the power bank 10 with lighting function, and improve its assembly efficiency, the present application improves the structure of the metal nut 300 and provides the following power bank production process.

[0055] A power bank production process, providing an injection mold 30 for making a rear shell 200, see Figure 6 , Figure 7 and Figure 8 , which includes: an upper mold 500, a lower mold 600, a rotating shaft 700 and a robot (not shown).

[0056] See also Fig. 9 and Fig.10 The rotating shaft 700 is rotatably disposed in the lower mold 600. The rotating shaft 700 is provided with a limit rod 710 for supporting the metal nut 300. The limit rod 710 is provided with an external thread 711 and two avoidance portions 712. The external thread 711 is used for threaded connection with the metal nut 300. The avoidance portion 712 extends along the axis of the rotating shaft 700 to divide the external thread 711. The production steps of the power bank 10 with lighting function are as follows:

[0057] Step 1: The upper die 500 is separated from the lower die 600, and the metal nut 300 is sleeved on the limit rod 710 by a robot. Fig. 9 As shown;

[0058] Step 2: Drive the rotating shaft 700 to rotate in the forward direction, so that the external thread 711 is screwed with the internal thread 311 (such as Fig.11 As shown), to fix the metal nut 300;

[0059] Step 3: The upper mold 500 and the lower mold 600 are molded together, and the injection molding machine injects the injection liquid into the cavity of the injection mold 30, and the injection liquid and the metal nut 300 are integrally molded to obtain the back cover 200;

[0060] Step 4: The upper mold 500 is separated from the lower mold 600, and the rotating shaft 700 is driven to rotate in the opposite direction, so that the external thread 711 is separated from the internal thread 311 (such as Fig.12 As shown), the formed rear shell 200 is then picked up by a robot;

[0061] Step 5: Place the power bank body in the outer shell 11 composed of the rear shell 200 and the front shell 100, screw the screw 400 and the metal nut 300 together to obtain the power bank 10 with lighting function.

[0062] Combining the above injection mold 30 and production steps, it can be seen that during the injection molding process of the rear housing 200, after the metal nut 300 is sleeved on the limit rod 710 by the robot, the matching state of the limit rod 710 and the metal nut 300 is as follows: Fig.11As shown, at this time, the external thread 711 on the limiting rod 710 is located in the groove 312, and the avoidance portion 712 faces the internal thread 311 (that is, the external thread 711 is staggered with the internal thread 311). In this state, the metal nut 300 is not locked by the limiting rod 710;

[0063] In step 2, the rotating shaft 700 rotates forward, and the external thread 711 on the limiting rod 710 moves from the groove 312 side to the internal thread 311, so that the limiting rod 710 is threadedly connected with the metal nut 300. The matching state of the limiting rod 710 and the metal nut 300 is as shown in FIG. Fig.12 As shown, in this state, the outer thread 711 buckles the inner thread 311, and the metal nut 300 is locked. Since the metal nut 300 is locked on the limit rod 710 at this time, the position of the metal nut 300 is temporarily fixed, so when the injection molding machine injects injection liquid into the cavity of the injection mold 30, the metal nut 300 will not be deflected or floated due to the impact of the injection liquid.

[0064] Furthermore, the internal thread 311 of the metal nut 300 is located in the blind hole 310, and the metal nut 300 is a cap-shaped structure with one side opening, rather than a tubular structure with two ends opening, and the state of the metal nut 300 when it is sleeved on the limit rod 710 is as follows: Fig. 9 As shown, the opening of the blind hole 310 faces the shaft 700, and the end of the metal nut 300 away from the shaft 700 has no opening, so the injection liquid cannot enter the blind hole 310 from here; on the other hand, the limit rod 710 locks the metal nut 300 through the external thread 711, so that the opening of the blind hole 310 is in close contact with the shaft shoulder of the shaft 700, and the injection liquid cannot penetrate from the side of the shaft 700, ensuring that the internal thread 311 of the metal nut 300 is intact after injection molding, and after the injection liquid is cooled, it is integrally formed with the metal nut 300 to obtain the rear shell 200. Preferably, the length of the limit rod 710 is less than the depth of the blind hole 310, ensuring that when the metal nut 300 is sleeved on the limit rod 710, the opening of the blind hole 310 is in close contact with the shaft shoulder of the shaft 700.

[0065] Before demoulding, the rotating shaft 700 is driven to rotate in the opposite direction to disengage the external thread 711 from the internal thread 311, so that the cooperation between the limiting rod 710 and the metal nut 300 is Fig.12 The status shown is switched to Fig.11 In the state shown, the locking of the metal nut 300 by the limiting rod 710 is released, and the metal nut 300 is removed when the robot picks up the rear housing 200.

[0066] It should be noted that when the metal nut 300 is put on the limiting rod 710, the external thread 711 and the internal thread 311 will collide with each other, resulting in the limiting rod 710 being unable to be directly inserted into the blind hole 310. The solution is as follows: when the metal nut 300 is put on the limiting rod 710 in step 1, if the metal nut 300 is not stuck, directly push the metal nut 300 and put it on the limiting rod 710; if the metal nut 300 is stuck, stop pushing, rotate the metal nut 300, align the groove 312 with the external thread 711, and continue to push the metal nut 300 until the metal nut 300 is put on the limiting rod 710.

[0067] See also Figure 8 Preferably, a mark 330 is provided at the end of the metal nut 300. The position of the mark 330 corresponds to the groove 312, that is, the distribution of the groove 312 in the blind hole 310 can be distinguished by observing the position of the mark 330. Before the manipulator picks up the metal nut 300, the CCD takes a picture of the end of the metal nut 300, and the metal nut 300 is rotated according to the direction of the mark 330 at this time, so as to reduce the probability of the metal nut 300 getting stuck during the sleeve installation process.

[0068] In summary, the above-mentioned power bank 10 with lighting function and its production process have the following advantages:

[0069] 1. The back cover 200 has a built-in metal nut 300, so that it can withstand a greater locking force (torque when locking the screw 400), and it is not easy to cause the screw 400 to slip or the back cover 200 to crack.

[0070] 2. The metal nut 300 is injection molded together with the rear shell 200, which saves the hot pressing step of the nut, is conducive to improving production efficiency, and avoids the problem of defective products produced in the hot pressing nut process.

[0071] 3. During the injection molding process, the metal nut 300 is locked by the limiting rod 710 to prevent the metal nut 300 from shifting or floating, thereby ensuring the success rate of the injection molding of the rear shell 200. After the injection molding is completed, the rotating shaft 700 is reversed to allow the external thread 711 to enter the groove 312, thereby releasing the locking of the metal nut 300 by the limiting rod 710, so that the metal nut 300 can be demolded together with the rear shell 200.

[0072] In one embodiment, please refer to Figure 4 A plurality of anti-slip rings 320 are arranged on the outer wall of the metal nut 300, and each anti-slip ring 320 has external teeth. A fixing column 210 is arranged at the position where the rear shell 200 and the metal nut 300 are connected, and a reinforcing rib 220 is arranged on the outer side of the fixing column 210. The outer wall of the metal nut 300 is made uneven, so that the connection between the metal nut 300 and the rear shell 200 is more stable.

[0073] Preferably, the two avoidance portions 712 are parallel, and the distance between the two avoidance portions 712 is smaller than the aperture of the blind hole 310. This prevents the avoidance portions 712 from scratching the internal threads 311 when the metal nut 300 is sleeved or the robot picks up the rear shell 200, so that the process of sleeved metal nut 300 or robot picking up the rear shell 200 is smooth and unobstructed.

[0074] In one embodiment, please refer to Fig. 9 and Fig.10 A boss 720 is provided on the rotating shaft 700 at a position in contact with the metal nut 300. When the limiting rod 710 locks the metal nut 300, the boss 720 blocks the opening of the blind hole 311, thereby improving the sealing performance and preventing the injection liquid from penetrating.

[0075] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A power bank production process, used to make a power bank with lighting function, the power bank with lighting function comprising: An outer shell and a power bank body located in the outer shell; the power bank body is provided with an LED lamp bead and a start button; the outer shell includes a front shell and a rear shell that are interlocked, the rear shell is provided with a metal nut, the front shell is provided with a screw corresponding to the metal nut, the screw is threadedly connected with the metal nut to fix the front shell on the rear shell; the metal nut is provided with a blind hole, the blind hole is provided with an internal thread and at least two grooves, the internal thread is used to be threadedly connected with the screw, the groove extends along the direction of the axis of the blind hole to divide the internal thread, characterized in that An injection mold for making the back shell is provided, which includes: an upper mold, a lower mold, a rotating shaft and a manipulator for picking up the back shell, the rotating shaft is rotatably arranged in the lower mold, the rotating shaft is provided with a limiting rod for supporting the metal nut, the limiting rod is provided with an external thread and two avoidance parts, the external thread is used to be threadedly connected with the metal nut, and the avoidance part extends along the direction of the axis of the rotating shaft to divide the external thread, The production steps of the power bank with lighting function are as follows: Step 1: The upper die is separated from the lower die, and the robot puts the metal nut on the limit rod; Step 2: Drive the shaft to rotate forward to allow the external thread to engage with the internal thread to fix the metal nut; Step 3: The upper mold and the lower mold are closed, and the injection molding machine injects the injection liquid into the cavity of the injection mold, and the injection liquid and the metal nut are integrally formed to obtain the back shell; Step 4: The upper mold is separated from the lower mold, and the drive shaft is rotated in the opposite direction to separate the external thread from the internal thread, and then the robot picks up the formed back shell; Step 5: Place the power bank body in the outer shell composed of the rear shell and the front shell, screw the screws and the metal nuts together to obtain a power bank with lighting function.

2. The power bank production process according to claim 1, characterized in that: When the metal nut is put on the limiting rod in step 1, If the metal nut is not stuck, directly push the metal nut to put it on the limit rod; If the metal nut is stuck, the pushing action is stopped, and the metal nut is rotated to align the groove with the external thread, and then the metal nut is continued to be pushed until the metal nut is sleeved on the limiting rod.

3. The power bank production process according to claim 1, characterized in that: The length of the limiting rod is smaller than the depth of the blind hole.

4. The power bank production process according to claim 1, characterized in that: The two avoidance portions are parallel to each other, and the distance between the two avoidance portions is smaller than the aperture of the blind hole.

5. The power bank production process according to claim 1, characterized in that: A boss is provided on the rotating shaft at a position in contact with the metal nut.

6. The power bank production process according to claim 1, characterized in that: The end of the metal nut is provided with a mark.

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