Battery pack stable connection structure and electric tool

Abstract

The utility model discloses a battery pack stable connection structure and electric tool, including shell and be used for the socket of electric connection with the battery pack, be equipped with the connecting piece between the socket and the shell, connecting piece includes at least two spaced apart elastic end, the elastic end with the help of elastic potential energy change, the elastic end is connected with the socket and the shell. Therefore, the vibration amplitude of the socket along with the shell is reduced. According to the battery pack stable connection structure and the electric tool, when the electric tool works to generate vibration, the influence of the vibration on the connection of the battery pack and the socket can be effectively reduced, the problems of loose connection, poor contact and the like caused by the vibration are avoided, stable electric connection between the battery pack and the socket is ensured, and normal operation of the electric tool is ensured.

Description

Technical Field

[0001] This utility model relates to the field of power tool technology, and more specifically, to a stable connection structure for a battery pack and a power tool. Background Technology

[0002] In the field of power tools, battery packs are an important power source, and their stable connection with the power tools is crucial. A stable connection not only ensures the continuous and efficient operation of the power tools, but also extends the lifespan of both the battery pack and the power tools, and reduces safety risks during use.

[0003] Traditional battery pack connection structures typically involve directly fixing the socket to the power tool's housing. However, this connection method presents several problems. Vibration is unavoidable during actual use of power tools. For example, when an electric drill is drilling, the contact between the drill bit and the workpiece generates severe vibration; when an electric saw is cutting wood, the friction and collision between the saw blade and the wood also produce vibration. These vibrations are directly transmitted to the connection point between the battery pack and the socket.

[0004] Because traditional connection structures lack effective vibration damping measures, prolonged vibration can easily cause the socket to loosen. A loose socket leads to unstable electrical connections between the battery pack and the socket, resulting in poor contact. Poor contact can cause voltage fluctuations, affecting the normal power output of power tools and causing a decline in tool performance, such as unstable drill speed and reduced cutting efficiency of chainsaws. Furthermore, poor contact can generate electrical sparks, increasing safety hazards such as fire and electric shock. In addition, frequent vibration can cause wear and tear on the connection points between the battery pack and the socket, shortening the lifespan of both the battery pack and the socket, and increasing user costs.

[0005] To address vibration issues, some existing technologies attempt to add simple cushioning materials, such as rubber pads, to the connection points. However, these cushioning materials have limited shock absorption effects and are prone to aging and deformation over prolonged use, losing their shock absorption function. Moreover, simple cushioning materials can only alleviate vertical vibrations to a certain extent; their shock absorption effect is poor for horizontal vibrations or vibrations in other complex directions.

[0006] Some technologies enhance connection stability by increasing the number of fixing bolts or employing more complex mechanical locking structures. However, while these methods improve connection robustness to some extent, they increase the difficulty of battery pack installation and removal, reducing user convenience. Furthermore, these structures still lack sufficient vibration absorption and buffering capabilities, failing to fundamentally address the impact of vibration on connection stability. Utility Model Content

[0007] In view of this, the purpose of this utility model is to provide a stable connection structure for a battery pack and a power tool, which can effectively reduce the impact of vibration on the connection between the battery pack and the socket when the power tool is working, avoid problems such as loose connection and poor contact caused by vibration, ensure that the battery pack and the socket maintain a stable electrical connection, and ensure the normal operation of the power tool.

[0008] To achieve the above objectives, in a first aspect, this application provides a stable connection structure for a battery pack, including a housing and a socket for electrical connection with the battery pack. A connector is provided between the socket and the housing, and the connector includes at least two spaced elastic ends. The elastic ends reduce the amplitude of vibration of the socket with the housing by means of changes in elastic potential energy.

[0009] Through the above technical solution, when the power tool vibrates during operation, the elastic end can absorb and disperse the vibration energy, effectively reducing the degree of vibration of the socket with the housing, avoiding problems such as loose connection and poor contact between the battery pack and the socket caused by vibration, ensuring a stable electrical connection between the battery pack and the socket, and thus ensuring the normal operation of the power tool.

[0010] In conjunction with the first aspect, a further technical solution is that the at least two spaced elastic ends are connected into a whole by a connecting part, the elastic ends abut against the socket, and the connecting part abuts against the housing.

[0011] Through the above technical solution, this connection and contact method allows the connector to be installed more stably between the socket and the housing. The elastic end can transmit the vibration received by the socket and convert it into elastic potential energy, while the connection part disperses the vibration onto the housing, thereby further improving the shock absorption effect and ensuring the stability of the connection.

[0012] In conjunction with the first aspect, a further technical solution is that the at least two elastic ends are connected into a whole by a connecting part, the elastic ends abut against the housing, and the connecting part abuts against the socket.

[0013] Through the above technical solution, the structure can also effectively transmit and disperse vibration. When the elastic end comes into contact with the shell, it can better absorb the vibration energy from the shell. The connecting part transmits the buffered vibration to the socket, making the socket less affected by vibration and maintaining the reliability of the connection between the battery pack and the socket.

[0014] In conjunction with the first aspect, a further technical solution is characterized in that one end of the elastic end is connected to the connecting portion, and the other end extends away from the connecting portion and then bends toward the connecting portion, thereby forming a structure with elastic deformation capability.

[0015] Through the above technical solution, this special bending structure gives the elastic end a larger range of elastic deformation, allowing it to deform more flexibly when subjected to vibration, better absorb and buffer vibration, and enhance the shock absorption performance of the connector.

[0016] In conjunction with the first aspect, a further technical solution is that the other end of the bent elastic end abuts against the connecting part to enhance the stability of the elastic support.

[0017] Through the above technical solution, when the elastic end deforms, the bent end abuts against the connecting part to prevent excessive deformation of the elastic end, ensuring the stability of the elastic support, enabling the connector to continuously and effectively play a shock-absorbing role, and extending the service life of the connector.

[0018] In conjunction with the first aspect, a further technical solution is provided in which a gap is provided between the other end of the elastic end and the connecting part, and this gap provides the elastic end with a larger elastic deformation space.

[0019] Through the above technical solution, when faced with vibrations of different degrees, the gap allows the elastic end to have a greater deformation margin, enabling the elastic end to adapt to the vibration intensity and thus more effectively absorb and buffer the vibration, improving the adaptability of the connector to complex vibration environments.

[0020] In conjunction with the first aspect, a further technical solution is characterized by comprising two sets of the aforementioned connectors, which are disposed on opposite sides of the socket to achieve symmetrical shock absorption of the socket.

[0021] Through the above technical solution, the two sets of symmetrically arranged connectors can simultaneously dampen the socket from both sides, making the impact of vibration on the socket more balanced in all directions. This avoids the connection instability caused by uneven force on one side and further improves the stability of the connection between the battery pack and the socket.

[0022] In conjunction with the first aspect, a further technical solution is that the elastic ends of the two sets of connectors are arranged opposite each other.

[0023] Through the above technical solution, the oppositely positioned elastic ends can cooperate to jointly cope with vibrations from different directions, enhancing the synergy of the shock absorption effect. When subjected to vibration, the opposite elastic ends can deform simultaneously, more effectively absorbing and dispersing vibration energy, providing more stable support for the socket.

[0024] Secondly, this application provides an electric tool, including the battery pack stable connection structure of the first aspect, which can improve the stability of the connection between the battery pack and the socket during the use of the electric tool.

[0025] Through the above technical solution, the power tools can ensure a continuous and stable power supply during use because the battery pack and socket are stably connected. This avoids problems such as performance degradation and frequent malfunctions caused by unstable connections, thereby improving the working efficiency and reliability of the power tools.

[0026] In conjunction with the second aspect, a further technical solution also includes a battery pack, wherein the battery pack is detachably connected to the socket, and the connector is disposed in the detachment / removal direction of the battery pack and the socket.

[0027] Through the above technical solution, the connector can play a buffering role during the disassembly and assembly of the battery pack, reducing the impact on the connection between the battery pack and the socket during the disassembly and assembly process, protecting the connection structure from damage, and also improving the user's operating experience in disassembling and assembling the battery pack, making the disassembly and assembly process smoother and safer.

[0028] In summary, this application has at least one of the following beneficial technical effects:

[0029] 1. Effectively reduces the amplitude of socket vibration caused by the housing, ensuring a stable electrical connection between the battery pack and the socket, and ensuring the normal operation of power tools.

[0030] 2. The various structural designs of the connectors improve the shock absorption effect and stability, adapting to different vibration environments and working conditions.

[0031] 3. The symmetrically arranged connectors and the relatively arranged elastic ends enhance the synergy and balance of shock absorption, further improving connection stability.

[0032] 4. It acts as a buffer during the battery pack assembly and disassembly process, protecting the connection structure and improving the user experience. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the three-dimensional structure of the shell;

[0035] Figure 2 This is a schematic diagram of the stable connection structure of the battery pack in this application;

[0036] Figure 3 This is a first exploded structural diagram of the stable connection structure of the battery pack in this application;

[0037] Figure 4This is a second exploded view of the stable connection structure of the battery pack in this application;

[0038] Figure 5 This is a schematic diagram of the structure of the first embodiment of the connector in this application;

[0039] Figure 6 This is a schematic diagram of the structure of the second embodiment of the connector in this application;

[0040] Figure 7 This is a schematic diagram of the structure of a power tool;

[0041] Figure 8 This is an exploded view of a power tool.

[0042] Figure 9 This is a bottom view of the exploded structure of a power tool;

[0043] Figure 10 This is a cross-sectional structural diagram of a power tool.

[0044] Figure label:

[0045] 1. Housing; 11. Mounting port; 12. Mounting groove; 13. Groove; 14. Notch; 2. Socket; 21. Protrusion; 22. Insert; 23. Flange; 24. Rib; 3. Connector; 31. Elastic end; 32. Connecting part; 4. Battery pack; 41. Button; 42. Snap-on; 43. Slot; 431. Spring; 44. Circuit board. Detailed Implementation

[0046] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0047] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0048] In the description of this application, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0049] The battery pack stable connection structure and power tool including the structure disclosed in this application aim to solve the problem of unstable connection between the battery pack and the socket due to vibration in the prior art. The technical solution of this application is described in detail below with reference to the accompanying drawings and specific embodiments. Unless otherwise specified, the features in the following embodiments can be combined with each other.

[0050] Example 1

[0051] Please see Figures 1-5 This embodiment discloses a stable connection structure for a battery pack, including a housing 1 and a socket 2 for electrical connection with a battery pack 4. A connector 3 is provided between the socket 2 and the housing 1. The connector 3 includes two spaced-apart elastic ends 31, which are connected into a whole by a connecting part 32. The elastic ends 31 abut against the socket 2, and the connecting part 32 abuts against the housing 1. In practical applications, the elastic ends 31 can also be configured to abut against the housing 1, and the connecting part 32 abuts against the socket 2.

[0052] Please see Figure 1 and Figure 2 The housing 1 is provided with a mounting port 11 for inserting the battery pack 4. The battery pack 4 is inserted into the mounting port 11 and electrically connected to the socket 2 according to the installation direction shown in the figure, and is fixedly connected to the housing 1. The disassembly direction is the opposite of the installation direction.

[0053] Please see Figures 2-4 The connector 3 is positioned on the side of the socket 2 away from the mounting opening 11 in the installation direction. In this embodiment, the elastic end 31 of the connector 3 abuts against the socket 2, and the connecting portion 32 of the connector 3 abuts against the housing 1. In the installation direction, the elastic end 31 can reduce the amplitude of the socket 2's vibration with the housing 1 by means of the change in elastic potential energy.

[0054] Please see Figure 2 and Figure 3The socket 2 includes a protrusion 21, a insert 22, a flange 23, and a rib 24. The protrusion 21 abuts against the elastic end 31 of the connector 3, and the rib 24 on the opposite side of the protrusion 21 abuts against the housing 1. The insert 22 is used to electrically connect with the battery pack 4 to supply power to the power tool. The flange 23 is inserted into the mounting groove 12 of the housing 1. The housing 1 is formed by two halves snapping together. The socket 2 is snapped together by the two halves of the housing 1 and fixed by the mounting groove 12. The housing 1 also has a groove 13 that is adapted to the size of the protrusion 21. After the socket 2 is assembled with the housing 1, the protrusion 21 is set in the groove 13.

[0055] Please see Figure 4 The housing 1 is also provided with a notch 14, and the connecting part 32 of the connector 3 covers the notch 14, which can reduce the impact of the dimensional accuracy of the housing 1 or the connector 3 on the assembly and elasticity performance.

[0056] Please see Figure 5 One end of the elastic end 31 is connected to the connecting portion 32, and the other end extends away from the connecting portion 32 and then bends towards the connecting portion 32, forming a structure with elastic deformation capability. In this embodiment, the other end of the elastic end 31 after bending abuts against the connecting portion 32 to enhance the stability of the elastic support. The cross-sectional shape of the bent portion can be triangular, trapezoidal, or semi-circular.

[0057] When the power tool vibrates during operation, the vibration is transmitted from the housing 1 to the connector 3. The elastic end 31 undergoes elastic deformation under the influence of vibration, converting the vibration energy into elastic potential energy. Since the elastic end 31 abuts against the socket 2, it effectively reduces the amplitude of vibration transmitted to the socket 2. The connecting part 32 abuts against the housing 1, dispersing some of the vibration energy onto the housing 1, further reducing the impact of vibration on the socket 2, thereby ensuring a stable electrical connection between the battery pack 4 and the socket 2.

[0058] To better achieve the above effects, in practical applications, the elastic end 31 and the connecting part 32 can be made of metal materials with good elasticity and strength, such as spring steel. Spring steel has a high modulus of elasticity and fatigue strength, and can maintain stable elastic properties under long-term vibration, ensuring that the connecting part 3 can continuously and effectively perform its vibration damping function. At the same time, the bending angle and dimensions of the elastic end 31 can be optimized according to the specific vibration frequency and intensity of the power tool. For example, for power tools with high vibration frequency and high intensity, the bending angle of the elastic end 31 can be appropriately increased to increase its elastic deformation range and improve the vibration damping effect.

[0059] Example 2

[0060] Please see Figure 6The difference from Embodiment 1 is that one end of the elastic end 31 is connected to the connecting part 32, and the other end extends away from the connecting part 32 and then bends toward the connecting part 32, and there is a gap between the other end of the elastic end 31 and the connecting part 32.

[0061] When the power tool vibrates during operation, the vibration is first transmitted to the housing 1. The elastic end 31, which abuts against the housing 1, absorbs the vibration energy and undergoes elastic deformation. Due to the gap, the elastic end 31 has a larger elastic deformation space, enabling it to more flexibly cope with vibrations of different intensities. The elastic end 31 transmits the buffered vibration to the socket 2 through the connecting part 32, significantly reducing the vibration experienced by the socket 2 and maintaining the reliability of the connection between the battery pack 4 and the socket 2.

[0062] In practical design, the spacing needs to be adjusted according to the specific working conditions of the power tool. If the power tool vibrates violently, the spacing can be appropriately increased to provide greater elastic deformation space; if the vibration is relatively small, the spacing can be appropriately decreased to ensure the support stability of the elastic end 31. In addition, to improve the contact effect between the elastic end 31 and the housing 1, and between the connecting part 32 and the socket 2, an anti-slip coating or rubber pad can be provided on the contact surface to increase friction, prevent relative slippage during vibration, and further improve the stability of the connection.

[0063] Example 3

[0064] The difference between this embodiment and the above embodiments is that it includes two sets of connectors 3, which are disposed on opposite sides of the socket 2 to achieve symmetrical shock absorption of the socket 2.

[0065] Example 4

[0066] Please see Figures 7-10 This embodiment discloses an electric tool (such as an electric drill, screwdriver, sander, electric pick, etc.) that includes the battery pack stable connection structure in Embodiment 1 or Embodiment 2.

[0067] Please see Figure 7 and Figure 8 The battery pack 4 is inserted into the housing 1 from the mounting port 11 along the mounting direction and is connected and fixed to the housing 1. The battery pack 4 and the housing 1 are slidably connected by a sliding groove and slide rail structure.

[0068] Please see Figure 8The battery pack 4 includes a button 41 and a latch 42. The latch 42 engages with the edge of the mounting opening 11 of the housing 1. The latch 42 is connected to a spring so that it always protrudes from the outer surface of the battery pack 4. Pressing the button 41 can drive the latch 42 to move synchronously in the same direction. The latch 42 has a guide slope in the installation direction. When the battery pack 4 slides into the housing 1 from the mounting opening 11 along the installation direction, the housing 1 pushes the guide slope to press down the latch 42 so that it can pass through the mounting opening 11. After passing through the mounting opening 11, it returns to its original position under the elastic force of the spring and engages with the housing 1 to prevent the battery pack 4 from disengaging from the housing 1 in the opposite direction of the installation direction.

[0069] Please see Figures 8-10 The battery pack 4 is also provided with a slot 43, and a spring 431 is provided in the slot 43. When the battery pack 4 is assembled with the housing 1, the insert 22 on the socket 2 is inserted along the slot 43 and connected to the spring 431. The connector 3 provides the socket 2 with a force in the opposite direction to the installation direction so that the insert 22 and the spring 431 maintain good contact.

[0070] Please see Figure 10 When the battery pack 4 is assembled with the housing 1, the buckle 42 abuts against the inner wall of the housing 1, and the other end of the battery pack 4 also abuts against the inner wall of the housing 1, thereby restricting the movement of the battery pack 4 in the installation and disassembly directions. The battery pack 4 also includes a circuit board 44, a spring 431 is electrically connected to the circuit board 44, and the circuit board 44 is electrically connected to the battery assembly. After the insert 22 is inserted into the spring 431, the battery assembly can provide power to the power tool.

[0071] Example 5

[0072] Please see Figures 1-10 This embodiment discloses an electric tool including the stable battery pack connection structure of Embodiment 3, comprising two sets of connectors 3. The two sets of connectors 3 are disposed on opposite sides of a socket 2 in the installation direction, and the elastic ends 31 of the two sets of connectors 3 are positioned opposite each other. When replacing the battery pack 4, the connectors 3 act as guides and buffers in the disassembly and assembly direction of the battery pack 4 and the socket 2, enabling the battery pack 4 to be installed quickly and accurately. During tool operation, the connectors effectively reduce the vibration of the socket 2, ensuring the stability and reliability of the connection between the battery pack 4 and different tools, and improving the ease of use and performance of the entire electric tool set.

[0073] When a power tool is running, the resulting vibrations cause the housing 1 to shake. Since the two sets of connectors 3 are symmetrically arranged on both sides of the socket 2, and the elastic ends 31 are positioned opposite each other, they can dampen the socket 2 from different directions. When one elastic end 31 deforms due to vibration, the other elastic end 31 can also adjust its deformation accordingly, jointly absorbing and dispersing vibration energy. In this way, the vibration impact on the socket 2 is more balanced in all directions, effectively avoiding connection instability caused by uneven force on one side. Simultaneously, during the assembly and disassembly of the battery pack 4 and the socket 2, the connectors 3 positioned in the assembly / disassembly direction can act as a buffer, reducing the impact on the connection part 32, protecting the battery pack 4 and the socket 2, and improving the user's operating experience.

[0074] To ensure the effective synergy of the two sets of connectors 3, the positional accuracy and elastic performance of the two sets of connectors 3 must be consistent during installation. Precise installation of connectors 3 can be achieved using locating pins or slots. Simultaneously, the elastic performance of connectors 3 should be rigorously tested and screened during production to ensure that the elastic coefficients of the two sets of connectors 3 are similar, thereby achieving a better synergistic vibration reduction effect. Furthermore, the number and layout of connectors 3 can be further optimized for different types of power tools and usage scenarios. For example, for large power tools or working environments with more complex vibrations, the number of sets of connectors 3 can be appropriately increased to improve the vibration reduction effect.

[0075] In addition, the elastic ends 31 of the two sets of connectors 3 can also be set in opposite directions or in the same direction according to actual needs, so as to adapt to the working performance of different power tools and improve the connection stability between the socket 2 and the battery pack 4.

[0076] The above provides a detailed description of a stable connection structure for a battery pack provided by this utility model. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A stable connection structure for a battery pack, characterized in that, The device includes a housing and a socket for electrical connection with a battery pack. A connector is provided between the socket and the housing. The connector includes at least two spaced elastic ends. The elastic ends reduce the amplitude of vibration of the socket with the housing by means of changes in elastic potential energy.

2. The stable connection structure of the battery pack according to claim 1, characterized in that, The at least two spaced elastic ends are connected into a whole by a connecting part, the elastic ends abut against the socket, and the connecting part abuts against the housing.

3. The battery pack stable connection structure according to claim 1, characterized in that, The at least two elastic ends are connected into a whole by a connecting part, the elastic ends abut against the housing, and the connecting part abuts against the socket.

4. The battery pack stable connection structure according to any one of claims 2 to 3, characterized in that, One end of the elastic end is connected to the connecting part, and the other end extends away from the connecting part and then bends toward the connecting part, thereby forming a structure with elastic deformation capability.

5. The battery pack stable connection structure according to claim 4, characterized in that, The other end of the bent elastic end abuts against the connecting part to enhance the stability of the elastic support.

6. The battery pack stable connection structure according to claim 4, characterized in that, A gap is provided between the other end of the elastic end and the connecting portion, which provides the elastic end with a larger elastic deformation space.

7. The battery pack stable connection structure according to any one of claims 1 to 3, characterized in that, It includes two sets of connectors, which are disposed on opposite sides of the socket to achieve symmetrical shock absorption of the socket.

8. The battery pack stable connection structure according to claim 7, characterized in that, The elastic ends of the two sets of connectors are arranged opposite each other.

9. A power tool, characterized in that, The battery pack stable connection structure, as described in any one of claims 1 to 8, improves the stability of the connection between the battery pack and the socket during the use of the power tool.

10. The power tool according to claim 9, characterized in that, It also includes a battery pack, which is detachably connected to the socket, and the connector is disposed in the detachment direction of the battery pack and the socket.

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