Charger capable of preventing wire from being clamped
By incorporating elastic sliding components of socket rings and hook rings in the charger, combined with the heat dissipation design of the connecting bridge, the problem of wire jamming caused by uncontrollable spring tension is solved, achieving stable wire extension and retraction and efficient heat dissipation of the circuit board.
Patent Information
- Application Number
- CN202522272614.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-28
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2035-10-28
AI Technical Summary
In traditional chargers, the springs are often too long, or after prolonged use, the springs become uncontrollable when stretched, leading to problems such as wire jamming, especially when the spring length is uneven.
A charger comprising a battery holder, an elastic sliding component, and a control module cavity was designed. By setting a sleeve ring and a hook ring on the spring, and using the sleeve ring as a force fulcrum, the spring is ensured to be stable when stretched. A connecting bridge is set in the battery holder for heat dissipation, and the limiting contact and the circuit board are separated to form a temperature gradient for heat dissipation.
This avoids the problem of wire jamming, improves the rationality of assembly and heat dissipation efficiency, reduces the temperature during battery charging, and ensures the free extension and retraction of wires and effective heat dissipation of the circuit board.
Smart Images
Figure CN223652000U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a charger, and more particularly to a charger that can prevent the wires from getting stuck. Background Technology
[0002] A charger is a common charging device that is usually connected to a socket and used to charge the battery inside the charger. Most chargers on the market control the charging through a circuit board. The circuit board is connected to a charging base through wires. The charging base has contacts that connect to the positive and negative terminals of the battery, thus forming a charging circuit.
[0003] Generally, one of the two contacts for the positive and negative terminals is fixed to the battery holder, while the other is flexibly mounted on the battery holder by a spring to clamp the battery. During this process, the wires are tucked inside the charging holder, or more often, the wires are threaded through the middle of the spring body, and the circuit board is electrically connected to the contacts through the wires.
[0004] Traditional chargers use screws or soldering to fix the springs inside, which is not only cumbersome and inconvenient to assemble, but also increases labor costs. Therefore, during battery holder production, a hook structure is usually set inside the battery holder. During assembly, the spring is simply hooked onto the hook to complete the assembly. However, if a hook structure is used for fixation, the spring's posture becomes uncontrollable when stretched. It is easy for the opening in the middle of the spring to collapse and deform after stretching, causing it to jam the wires. This is especially true when the spring is long, as the degree of stretching is uneven at different lengths. This makes it even more likely that the opening of the spring body will collapse when stretched, causing the wires running inside to jam. Wires not running inside the spring body will also be affected and may jam.
[0005] To address the aforementioned issues, this solution proposes a charger that prevents the wires from getting stuck. Utility Model Content
[0006] To address the problem of wires being jammed by the spring when the internal spring of a charger is too long or when the spring's posture becomes uncontrollable during stretching after prolonged use, this utility model provides a charger that can prevent wire jamming, comprising: a battery holder, an elastic sliding component, and a control module cavity.
[0007] The battery holder has a sliding groove and a battery clamping mechanism. The battery clamping mechanism includes a limiting contact and a sliding contact. The limiting contact is disposed on the side end face of the sliding groove, and the sliding contact is slidably mounted on the sliding groove through the elastic sliding component.
[0008] The elastic sliding assembly includes a spring and an isolating positioning member. The isolating positioning member has a body and a sleeve arm. The isolating positioning member is installed inside the battery holder. One end of the spring is connected to the sliding contact piece. The other end of the spring has a sleeve ring perpendicular to the length direction of the spring body. The sleeve ring is sleeved on the sleeve arm, and the midpoint between the sleeve ring and the spring body serves as the force fulcrum when the spring is stretched.
[0009] The control module cavity has a circuit board with integrated control circuitry inside. The circuit board is electrically connected to the limiting contact piece. The circuit board is electrically connected to the sliding contact piece through a first wire passing through the spring body, thereby forming a charging circuit.
[0010] The front section of the spring is bent to form the sleeve ring, which is perpendicular to the length direction of the spring body. The rear end of the spring is bent to form a hook ring parallel to the length direction of the spring body. The hook ring is connected to the hook portion below the sliding contact piece.
[0011] The main body is provided with a plugging protrusion, the battery holder is provided with a plugging groove, and the isolation positioning member is fixedly installed in the battery holder through the plugging cooperation of the plugging protrusion and the plugging groove.
[0012] The sleeve arm has a limiting protrusion. When the sleeve ring is sleeved on the sleeve arm, the lower end of the sleeve ring abuts against the side of the main body, and the upper end face of the sleeve ring is limited by the limiting protrusion.
[0013] The limiting protrusion is perpendicular to the sleeve arm.
[0014] The battery holder and the control module cavity are connected by a connecting bridge. The connecting bridge has a through hole inside, and a heat dissipation gap is formed between the outer surface of the connecting bridge and the battery holder and the control module cavity.
[0015] The circuit board and the limiting contact are electrically connected by a second wire.
[0016] The circuit board is mounted in the control module cavity by a support structure, and the plane of the circuit board is higher than the plane of the sliding groove.
[0017] A convection gap is formed between the circuit board and the inner wall of the control module cavity, and a heat dissipation hole is provided on the top of the control module cavity.
[0018] The battery holder is provided with two or more sets of sliding grooves and battery clamping mechanisms, and several of the battery clamping mechanisms are electrically connected to the circuit board.
[0019] Implementing this utility model embodiment has the following beneficial effects: ① Through the spring-set sleeve ring and hook ring, as well as the shoulder, sleeve arm, and limiting protrusion of the main body of the isolation positioning component, the spring, when stretched, uses the contact point between the sleeve ring and the main body as the force fulcrum, thereby ensuring the stability of the spring body's opening posture. The first wire can pass freely and unobstructed at the opening of the spring body, avoiding the problem of wire jamming due to changes in the spring's posture. ② The battery holder is layered at different heights by the spring, composite positioning component, limiting contact piece, and sliding contact piece, making the product's structural layout more compact. This not only makes the assembly more reasonable, but also provides the spring with linear expansion and contraction space at the bottom. Combined with the spring being sleeved on the sleeve arm, its structure, using the contact point between the sleeve ring and the main body as the force fulcrum, ensures that the stretching of the spring body and hook ring is linear, thus making the spring less prone to stretching deformation. ③ The control module cavity and battery holder are separated by a connecting bridge, creating a longer physical isolation between the limiting contacts and the circuit board. Simultaneously, the connecting bridge increases the heat dissipation area of the battery holder's outer surface, lengthening the heat conduction path of the battery holder housing. Heat generated by the circuit board can be dissipated to the outside through the increased outer surface area, i.e., the heat dissipation gap, with less heat being conducted to the battery on the battery holder, thus reducing the battery temperature during charging. ④ The circuit board is located inside the control module cavity, and its height is higher than the plane of the sliding groove. This results in a space where heated air accumulates when the circuit board heats up, higher than the height of the sliding groove where the battery is located. When the temperature at the circuit board is higher, the temperature at the battery holder is lower, creating a temperature gradient. The cooler hot air flows from lower to higher, causing air in the battery holder to flow from the lower sliding groove along the through-hole, through the heat dissipation gap, and through the heat dissipation holes above the control module cavity, forming an airflow channel and dissipating outwards. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of Embodiment 1 of the present utility model;
[0021] Figure 2 This is a cross-sectional schematic diagram of Embodiment 1 of this utility model;
[0022] Figure 3 This is a schematic diagram of the isolation positioning component and spring in Embodiment 1 of this utility model;
[0023] Figure 4 This is a schematic diagram of the insertion groove of Embodiment 1 of this utility model;
[0024] Figure 5 This is a schematic diagram of Embodiment 2 of the present invention;
[0025] Figure 6 This is a perspective view of the internal structure of Embodiment 2 of this utility model;
[0026] Figure 7 This is a schematic diagram of Embodiment 3 of this utility model. Detailed Implementation
[0027] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.
[0028] Example 1
[0029] like Figures 1-3 As shown, a charger that can prevent wires from getting stuck includes: a battery holder 1, an elastic sliding component 2, and a control module cavity 3.
[0030] like Figure 2 As shown, the battery holder 1 has a sliding groove and a battery clamping mechanism 11. The battery clamping mechanism 11 includes a limiting contact 111 and a sliding contact 112. The limiting contact 111 is disposed on the side end face of the sliding groove, and the sliding contact 112 is slidably mounted on the sliding groove through the elastic sliding component 2.
[0031] like Figure 3 As shown, the elastic sliding assembly 2 includes a spring 21 and an isolating positioning member 22. The isolating positioning member 22 has a main body 221 and a sleeve arm 222. The isolating positioning member 22 is installed inside the battery holder 1. One end of the spring 21 is connected to the sliding contact 112. The other end of the spring 21 has a sleeve ring 211 perpendicular to the length direction of the main body of the spring 21. The sleeve ring 211 is sleeved on the sleeve arm 222, and the midpoint between the sleeve ring 211 and the main body of the spring serves as the force fulcrum A1 when the spring 21 is stretched.
[0032] The control module cavity 3 has a circuit board 31 with integrated control circuit inside. The circuit board 31 is electrically connected to the limiting contact 111. The circuit board 31 is electrically connected to the sliding contact 112 through the first wire 41 passing through the main body of the spring 21, thereby forming a charging circuit.
[0033] The front section of the spring 21 is bent to form the sleeve ring 211, which is perpendicular to the length direction of the main body of the spring 21. The rear end of the spring 21 is bent to form a hook ring 212 parallel to the length direction of the main body of the spring 21. The hook ring 212 is connected to the hook part 1121 below the sliding contact piece 112.
[0034] The sleeve arm 222 has a limiting protrusion 224. When the sleeve ring 211 is sleeved on the sleeve arm 222, the lower end of the sleeve ring 211 abuts against the side of the main body 221, and the upper end surface of the sleeve ring 211 is limited by the limiting protrusion 224.
[0035] With the above configuration, when the spring 21 is stretched, its force fulcrum A1 acts on the midpoint between the sleeve ring 211 and the spring body, and forms a lever structure with this as the fulcrum. In this way, the spring 21 will not tilt downward when stretched, and can maintain the open posture of the spring 21 body, and allow the first wire 41 passing through the spring 21 to extend and retract freely without being jammed.
[0036] Specifically, the circuit board 31 and the limiting contact 111 are electrically connected by a second wire 42.
[0037] Please refer to Figure 4 The main body 221 is provided with a plugging protrusion 223, and the battery holder 1 is provided with a plugging groove 13. The isolation positioning member 22 is fixedly disposed in the battery holder 1 through the plugging protrusion 223 and the plugging groove 13, thereby fixing the isolation positioning member 22 on the battery holder 1. At the same time, a limiting contact mounting hole facing the sliding groove is provided on one side of the plugging groove 13. The limiting contact 111 is fixed above the isolation positioning member 22 and is disposed on one side of the sliding groove through the limiting contact mounting hole, and has a portion facing the sliding groove.
[0038] Example 2
[0039] This embodiment, based on embodiment 1, discloses a connection structure between the battery holder 1 and the control module cavity 3, thereby improving the heat dissipation effect of the charger and making the product more aesthetically pleasing.
[0040] like Figure 2 , Figure 5 As shown, the battery holder 1 and the control module cavity 3 are connected by a connecting bridge 5. The connecting bridge 5 has a through hole inside. A heat dissipation gap is formed between the outer surface of the connecting bridge 5 and the battery holder 1 and the control module cavity 3. The first wire 41 can pass through the through hole and the spring 21, and then connect to the sliding contact 112.
[0041] The heat dissipation gap separates the control module cavity 3 from the battery holder 1, creating a longer physical isolation between the limiting contact 111 and the circuit board 31. At the same time, the connecting bridge 5 increases the heat dissipation area of the outer surface of the battery holder 1, making the heat conduction path of the battery holder 1 housing longer. The heat generated by the circuit board 31 can be dissipated to the outside through the increased outer surface area, i.e., the heat dissipation gap, and less of it is conducted to the battery on the battery holder 1, thus reducing the battery temperature during charging.
[0042] The circuit board 31 is mounted in the control module cavity 3 by a support structure. The plane of the circuit board 31 is higher than the plane of the sliding groove. This arrangement allows the hot air generated when the circuit board 31 heats up to enter the battery holder 1 through the through hole and transfer the heat to the battery, resulting in a higher battery temperature during charging.
[0043] It should be noted that the support structure in this embodiment is a stud located inside the control module cavity 3, with a screw hole at its top. The circuit board 31 is mounted on the stud and fixed by screws. The plane of the circuit board 31 is adjusted by the height of the stud, which refers to the installation height of the circuit board 31 inside the control module cavity 3. This part is a conventional structure and will not be described in detail here.
[0044] like Figure 2 , Figure 6 As shown, a convection gap is formed between the circuit board 31 and the inner wall of the control module cavity 3. The top of the control module cavity 3 is provided with a heat dissipation hole 32. The convection gap is used to make the space below the circuit board 31 and the space above the circuit board 31 vertically connected.
[0045] The circuit board 31 is disposed inside the control module cavity 3 and is at the same height as the sliding groove where the battery is located. During charging, the temperature at the circuit board 31 is higher than the temperature at the battery holder 1, forming a temperature gradient. The hot air flows from the lower to the higher position, causing the air in the battery holder 1 to pass through the through hole, through the convection gap, and through the heat dissipation hole 32 above the control module cavity 3 to form an airflow channel and disperse outward.
[0046] In addition, since the height of the sliding contact is higher than the height of the spring, and the height of the circuit board is higher than the height of the sliding groove, this arrangement makes the plane of the circuit board and the plane of the spring offset from each other, and uses the space below the circuit board as the space for the first wire to extend and retract.
[0047] Example 3
[0048] This embodiment, based on embodiment 1, discloses a structure in which multiple sliding grooves and a battery clamping mechanism 11 are provided on a charger to enable simultaneous charging of multiple batteries.
[0049] like Figure 7 As shown, the battery holder 1 is provided with two or more sets of sliding grooves and battery clamping mechanisms 11. Several of the battery clamping mechanisms 11 are electrically connected to the circuit board 31 and can form a charging circuit to charge the battery during charging.
[0050] It should be noted that the charger disclosed in this embodiment is as follows: Figure 7 As shown, the corresponding battery holder 1 also has two sets of battery clamping mechanism 11, sliding groove and connecting bridge 5. However, in the actual product design and production process, the number of battery clamping mechanism 11, sliding groove and connecting bridge 5 can be increased or decreased according to different needs. The limitation on the number of each structure on this charging holder is not the focus of this solution. Any solution that adds or removes the number of structures on the charger should fall within the protection scope of this application.
[0051] Of course, the above embodiments are only for illustrating the technical concept and features of this utility model, and their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be used to limit the protection scope of this utility model. All modifications made in accordance with the spirit and essence of the main technical solution of this utility model should be covered within the protection scope of this utility model.
Claims
1. A charger that avoids wire jamming, characterized in that, include: Battery holder (1), elastic sliding component (2) and control module cavity (3); The battery holder (1) has a sliding groove and a battery clamping mechanism (11). The battery clamping mechanism (11) includes a limiting contact (111) and a sliding contact (112). The limiting contact (111) is disposed on the side end face of the sliding groove, and the sliding contact (112) is slidably mounted on the sliding groove through the elastic sliding component (2). The elastic sliding assembly (2) includes a spring (21) and an isolating positioning member (22). The isolating positioning member (22) has a main body (221) and a sleeve arm (222). The isolating positioning member (22) is installed inside the battery holder (1). One end of the spring (21) is connected to the sliding contact (112). The other end of the spring (21) has a sleeve ring (211) perpendicular to the length direction of the main body of the spring (21). The sleeve ring (211) is sleeved on the sleeve arm (222), and the midpoint between the sleeve ring (211) and the main body of the spring serves as the force fulcrum (A1) when the spring (21) is stretched. The control module cavity (3) has a circuit board (31) with integrated control circuit inside. The circuit board (31) is electrically connected to the limiting contact (111). The circuit board (31) is electrically connected to the sliding contact (112) through the first wire (41) passing through the main body of the spring (21), thereby forming a charging circuit.
2. A charger that can prevent wire jamming according to claim 1, characterized in that, The rear end of the spring (21) is bent to form a hook ring (212) parallel to the length direction of the main body of the spring (21). The hook ring (212) is connected to the hook part (1121) below the sliding contact piece (112).
3. A charger that can prevent wire jamming according to claim 1, characterized in that, The main body (221) is provided with a plug-in protrusion (223), the battery holder (1) is provided with a plug-in groove (13), and the isolation positioning member (22) is plugged into and fixedly installed in the battery holder (1) through the plug-in protrusion (223) and the plug-in groove (13).
4. A charger that avoids wire jamming according to claim 1, characterized in that, The sleeve arm (222) has a limiting protrusion (224). When the sleeve ring (211) is sleeved on the sleeve arm (222), the lower end of the sleeve ring (211) abuts against the side of the main body (221), and the upper end face of the sleeve ring (211) is limited by the limiting protrusion (224).
5. A charger that avoids wire jamming according to claim 4, characterized in that, The limiting protrusion (224) is perpendicular to the sleeve arm (222).
6. A charger that avoids wire jamming according to claim 1, characterized in that, The battery holder (1) and the control module cavity (3) are connected by a connecting bridge (5). The connecting bridge (5) has a through hole inside, and a heat dissipation gap is formed between the outer surface of the connecting bridge (5) and the battery holder (1) and the control module cavity (3).
7. A charger that avoids wire jamming according to claim 1, characterized in that, The circuit board (31) and the limiting contact (111) are electrically connected by a second wire (42).
8. A charger that avoids wire jamming according to claim 1, characterized in that, The circuit board (31) is installed in the control module cavity (3) by a support structure, and the plane of the circuit board (31) is higher than the height of the sliding groove.
9. A charger that avoids wire jamming according to claim 1, characterized in that, A convection gap is formed between the circuit board (31) and the inner wall of the control module cavity (3), and a heat dissipation hole (32) is provided on the top of the control module cavity (3).
10. A charger that can prevent wire jamming according to claim 1, characterized in that, The battery holder (1) is provided with two or more sets of sliding grooves and battery clamping mechanisms (11), and several of the battery clamping mechanisms (11) are electrically connected to the circuit board (31).