A wire-to-board connector with a metal lock catch resistant to unplugging for a power battery

Abstract

The utility model provides a kind of metal lock catch's line pair board connector for power battery, it is related to terminal fixed field.The connector includes shell, male plug and metal spring piece;Metal spring piece is extruded to female shell after entering female shell with male plug;Under the state that metal spring piece and female shell extrude each other, first clamping portion and second clamping portion are mutually clamped, to make female terminal and male terminal connect each other.The metal spring piece set by the utility model has higher elasticity and strength, can provide stronger and more stable extrusion force, effectively avoid the problem that connection loosening occurs due to the weakening of elasticity caused by long-term use.At the same time, the clear and crisp "click" sound produced by the collision of metal spring piece and female shell improves the operation experience, enhances the intuitiveness of connection confirmation, and improves the pull-out resistance of connector.

Description

Technical Field

[0001] This utility model belongs to the field of terminal fixing technology, and in particular relates to a wire-to-board connector with a metal locking buckle for power batteries that is resistant to plugging and unplugging. Background Technology

[0002] The wire-to-board connector with durable metal locking mechanism for power batteries mainly consists of two parts: the female housing containing the female terminals and the male plug containing the male terminals.

[0003] In existing technologies, after the male connector is inserted into the female housing, firstly, the connection stability between the female and male terminals is poor, easily leading to loosening or poor contact, resulting in unstable circuit connections and affecting the normal operation of electrical equipment. Secondly, the "click" sound of existing connectors during latching is not particularly noticeable, making it difficult to intuitively perceive the latching of the two parts of the connector in noisy environments. Thirdly, because existing connectors use plastic latches, the plastic latches are prone to wear after repeated insertion and removal operations, reducing the latch's firmness and further affecting the reliability of the connection; in other words, the existing latches have poor resistance to insertion and removal. Utility Model Content

[0004] In view of this, the present invention provides a wire-to-board connector with a metal latch for power batteries that is resistant to plugging and unplugging, aiming to improve the stability of the connection between the male plug and the female housing, make the latching sound more obvious, and improve the latch's resistance to plugging and unplugging.

[0005] The technical solution of this utility model is implemented as follows:

[0006] This utility model provides a wire-to-board connector for power batteries with a durable, pluggable metal latch, comprising: a female housing with a first snap-fit ​​portion, the interior of which is used to house a female terminal; a male plug for insertion into the female housing, the interior of which is used to house a male terminal; a metal spring piece disposed on the outside of the male plug piece; the metal spring piece having a second snap-fit ​​portion; wherein the protrusion height of the metal spring piece relative to the male plug piece is greater than the distance between the inner wall surface of the female housing and the top surface of the male plug piece, so that the metal spring piece compresses the female housing after the male plug piece enters the female housing; under the state of mutual compression between the metal spring piece and the female housing, the first snap-fit ​​portion and the second snap-fit ​​portion engage with each other, so that the female terminal and the male terminal are connected to each other.

[0007] In one embodiment, the first snap-fit ​​portion includes a through hole, and the second snap-fit ​​portion includes a snap-fit ​​protrusion.

[0008] In one embodiment, the male plug has a front end for insertion into the female housing; the metal spring includes a first end near the front end and a second end away from the front end, the first end being connected to the male plug, and the second end being spaced apart from the male plug; a second snap-fit ​​portion is disposed at the second end; the protrusion height of the second end relative to the male plug is greater than the distance between the inner wall surface of the female housing and the top surface of the male plug, so as to compress the female housing.

[0009] In one embodiment, the top surface of the male plug is provided with a connecting structure, the connecting structure including an insertion groove extending along the length direction of the male plug; the insertion groove has a closed end near the front end and an insertion entrance away from the front end; the first end passes through the insertion entrance and abuts against the inner side of the closed end.

[0010] In one embodiment, the connection structure further includes a backstop protrusion disposed within the insertion groove; a gap is formed between the backstop protrusion and the bottom wall of the insertion groove in the height direction of the male plug; a backstop arm is disposed at the first end, one end of the backstop arm is connected to the first end, and the other end is spaced apart from the bottom of the insertion groove; the backstop arm passes through the gap and is engaged with the side of the backstop protrusion near the front end.

[0011] In one embodiment, the connection structure further includes a clearance notch, the insertion groove surrounding the clearance notch; in the height direction of the male insert, the second end extends out of the clearance notch to abut against the inner wall surface of the female housing.

[0012] In one embodiment, the second end has a plurality of bent segments; from the front end of the male plug to the rear end of the male plug, the distance between each bent segment and the male plug gradually increases.

[0013] In one embodiment, the plurality of bent segments include a first bent segment, a first straight segment, a second bent segment, and a second straight segment connected in sequence. The first bent segment is close to the front end of the male plug, and the second straight segment is far from the front end of the male plug. The first bent segment and the second bent segment are respectively inclined relative to the length direction of the male plug. The distance between the second straight segment and the male plug is greater than the distance between the first straight segment and the male plug. The second snap-fit ​​portion is disposed on the second straight segment, and the second straight segment abuts against the female shell.

[0014] In one embodiment, the plurality of bent segments further includes a third bent segment connected to the second straight segment and a third straight segment connected to the third bent segment; the third bent segment is inclined relative to the length direction of the male plug-in, and the distance between the third straight segment and the male plug-in is greater than the distance between the second straight segment and the male plug-in; when the first snap-fit ​​portion and the second snap-fit ​​portion are snapped together, the third bent segment and the third straight segment extend out of the female housing.

[0015] In one embodiment, the angle formed between the first bent segment and the first end is an obtuse angle; and / or, the angle formed between the first straight segment and the first bent segment is an obtuse angle; and / or, the angle formed between the second bent segment and the first straight segment is an obtuse angle; and / or, the angle formed between the third bent segment and the second straight segment is an obtuse angle; and / or, the angle formed between the third straight segment and the third bent segment is an obtuse angle.

[0016] This utility model provides a wire-to-board connector with a durable, pluggable metal latch for power batteries. The connector includes a housing, a male plug, and a metal spring. The female housing has a first locking portion, and its interior is used to house female terminals. The male plug is inserted into the female housing, and its interior is used to house male terminals. The metal spring is located on the outside of the male plug and has a second locking portion. The protrusion height of the metal spring relative to the male plug is greater than the distance between the inner wall of the female housing and the top surface of the male plug, so that the metal spring compresses the female housing after the male plug enters it. Under this mutual compression, the first and second locking portions engage, connecting the female and male terminals. In summary, the metal spring of this utility model, compared to existing plastic springs integrally molded with the female housing, has higher elasticity and strength, providing stronger and more stable compressive force, effectively preventing loosening due to weakened elasticity from long-term use. Meanwhile, the crisp "click" sound produced by the collision between the metal spring and the female housing enhances the user experience and makes connection confirmation more intuitive. Furthermore, the metal material of the spring makes its wear resistance significantly superior to that of plastic clips, greatly improving the connector's resistance to insertion and removal, extending its service life, and ensuring a reliable and stable connection between the female and male terminals under frequent insertion and removal operations. This meets the needs of applications such as power batteries that require high connection stability and durability. Attached Figure Description

[0017] 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 An overall structural diagram of an embodiment of the wire-to-board connector with a metal locking buckle for power batteries provided by this utility model;

[0019] Figure 2 for Figure 1 Exploded view of the male connector and the female housing;

[0020] Figure 3 for Figure 1 Exploded view of the metal shrapnel and the propellant;

[0021] Figure 4 for Figure 1 A schematic diagram of the assembled metal spring and connector;

[0022] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0023] Figure 6 for Figure 4 Overall sectional view;

[0024] Figure 7 for Figure 1 First-person view structural diagram of a metal shrapnel;

[0025] Figure 8 for Figure 1 Second-view structural diagram of the metal shrapnel.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Female housing; 2. Male plug; 21. Front end; 22. Top surface; 3. Female terminal; 4. Male terminal; 5. Metal spring; 51. First end; 52. Second end; 521. First bending section; 522. First straight section; 523. Second bending section; 524. Second straight section; 525. Third bending section; 526. Third straight section; 53. Anti-reverse arm; 6. First snap-fit ​​part; 7. Second snap-fit ​​part; 8. Connecting structure; 81. Insertion groove; 82. Anti-reverse protrusion; 83. Clearance notch. Detailed Implementation

[0028] 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 scope of protection of the present utility model.

[0029] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0030] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0031] In existing technologies, after the male connector is inserted into the female housing, the connection stability between the female and male terminals is poor, and loosening or poor contact is prone to occur, leading to unstable circuit connections and affecting the normal operation of electrical equipment. In addition, the "click" sound of existing connectors during the snap-fit ​​process is not particularly obvious, so when installing in noisy environments, it is not easy to intuitively and clearly feel the snap-fit ​​of the two parts of the connector.

[0032] Therefore, this utility model provides a wire-to-board connector with a metal latch for power batteries that is resistant to plugging and unplugging, aiming to improve the stability of the connection between the male plug and the female housing, while making the latching sound more obvious.

[0033] The power battery uses a wire-to-board connector with a durable, pluggable metal latch, which is suitable for various electrical equipment scenarios, such as electronic equipment and communication equipment, and meets the needs of different industries for stable circuit connections.

[0034] Please see Figure 1 and Figure 2The power battery uses a wire-to-board connector with a durable, pluggable metal latch, comprising a female housing 1 and a male plug 2, the male plug 2 being inserted into the interior of the female housing 1. The interior of the female housing 1 is used to house a female terminal 3, and the interior of the male plug 2 is used to house a male terminal 4. In this invention, the specific manner in which the female terminal 3 is located in the female housing 1 and the specific manner in which the male terminal 4 is located in the male plug 2 are not limited; in specific implementations, the female terminal 3 can be injection molded into the interior of the female housing 1, and the male terminal 4 can be detachably installed inside the male plug 2. After the male plug 2 is inserted into the female housing 1, the male terminal 4 in the male plug 2 and the female terminal 3 in the female plug 2 can form an electrical connection.

[0035] To enhance the stability of the electrical connection, a metal spring 5 is provided on the outside of the male plug 2. This metal spring 5 can be arc-shaped or bent, and its specific shape can be designed according to actual needs. The metal spring 5 can be fixedly installed on the outside of the male plug 2, such as in a threaded connection or an injection-molded integrated connection; it can also be detachably installed on the outside of the male plug 2, such as in a snap-fit ​​or magnetic connection.

[0036] To ensure that the metal spring 5 compresses the female housing 1 after it enters the female housing 1 along with the male plug 2, the protrusion height of the metal spring 5 relative to the male plug 2 is set to be greater than the distance between the inner wall surface of the female housing 1 and the top surface 22 of the male plug 2. This distance between the inner wall surface of the female housing 1 and the top surface 22 of the male plug 2 can be understood as the remaining distance in the height direction of the space inside the female housing 1 where the male plug 2 can be inserted. The length direction of the male plug 2, i.e., the front-to-back direction, is represented by dashed line a in the figure. The height direction of the male plug 2, i.e., the thickness direction, is represented by dashed line b in the figure. When the metal spring 5 is inserted into the female housing 1 along with the male plug 2, because the protrusion height of the metal spring 5 is greater than this distance, the metal spring 5 will be compressed by the inner wall of the female housing 1 and undergo elastic deformation. The elastic force generated by this deformation can stabilize the position of the male plug 2 inside the female housing 1. Furthermore, compared to the existing plastic springs integrally molded with the mother shell 1, the metal spring 5 has higher elasticity and strength, can provide more durable and stable extrusion force, and effectively avoids the problem of loose connection due to weakened elasticity caused by long-term use.

[0037] Please continue reading. Figure 1 and Figure 2 The metal spring 5 is provided with a second locking portion 7. This second locking portion 7 can be integrally formed into the metal spring 5; that is, the second locking portion 7 is also a metal structure and is an integral structure with the metal spring 5. This design ensures the stability of the second locking portion 7 and avoids deformation and / or detachment from the metal spring 5 during frequent insertion and removal, which would affect the normal use of the connector.

[0038] The female housing 1 is provided with a first snap-fit ​​part 6. When the metal spring 5 and the female housing 1 are pressed against each other, the first snap-fit ​​part 6 on the female housing 1 and the second snap-fit ​​part 7 on the metal spring 5 snap into each other, and the male terminal 4 and the female terminal 3 are connected to each other; therefore, the elastic force generated by the compression of the metal spring 5 not only improves the connection stability between the male plug 2 and the female housing 1, but also improves the stability of the electrical connection between the male terminal 4 and the female terminal 3.

[0039] Furthermore, it can be understood that if one of the first locking part 6 and the second locking part 7 is a concave structure, then the other must be a convex structure. Therefore, during the process of the metal spring 5 entering the female housing 1 along with the male plug 2, if the first locking structure and the second locking structure do not engage, the metal spring 5 will not compress the female housing 1; and at the moment when the first locking mechanism and the second locking structure complete the engagement, the metal spring 5 will bounce against the inner wall of the female housing 1.

[0040] Since the female housing 1 must provide insulation protection for the female terminal 3, it is made of plastic. Furthermore, the elastic modulus of metal is significantly higher than that of plastic. Upon impact, the metal surface is harder, the contact time is shorter (according to Hertzian contact theory), and the instantaneous impact force is greater, resulting in more intense vibration. In contrast, plastic is softer, has a longer contact time, and the impact force is dispersed, resulting in a relatively smaller vibration amplitude. The high rigidity of metal leads to a higher vibration frequency, and the high-frequency sound waves are sharper, easily perceived as "loud" by the human ear. Plastic, on the other hand, has a lower vibration frequency, and the low-frequency sound wave energy is dispersed, thus the perceived loudness is weaker. Therefore, during the insertion of the male connector 2 into the female housing 1, the metal spring 5 bounces against the female housing 1, producing a crisper and louder "click" sound compared to the bounce between the plastic spring and the female housing 1. This allows the operator to clearly and intuitively feel the engagement of the two parts of the connector even in noisy environments, improving the user experience. Especially in noisy environments, this crisp snapping sound helps operators quickly confirm the connection status, reducing repetitive checks due to uncertain connections and improving work efficiency.

[0041] The wire-to-board connector with a metal locking mechanism for power batteries provided by this utility model includes a female housing 1, a male plug 2, and a metal spring 5. The female housing 1 is provided with a first locking part 6, and the interior of the female housing 1 is used to set a female terminal 3. The male plug 2 is used to be inserted into the female housing 1, and the interior of the male plug 2 is used to set a male terminal 4. The metal spring 5 is provided on the outside of the male plug 2. The metal spring 5 is provided with a second locking part 7. The protrusion height of the metal spring 5 relative to the male plug 2 is greater than the distance between the inner wall surface of the female housing 1 and the top surface 22 of the male plug 2, so that the metal spring 5 squeezes the female housing 1 after the male plug 2 enters the female housing 1. Under the state of mutual squeezing between the metal spring 5 and the female housing 1, the first locking part 6 and the second locking part 7 lock together to connect the female terminal 3 and the male terminal 4. In summary, the metal spring 5 of this invention, compared to the existing plastic springs integrally molded with the mother shell 1, has higher elasticity and strength, providing stronger and more stable compressive force, effectively preventing the problem of loosening due to weakened elasticity caused by long-term use. At the same time, the crisp "click" sound produced by the collision between the metal spring 5 and the mother shell 1 enhances the user experience and strengthens the intuitiveness of connection confirmation.

[0042] In addition, the metal material of the metal spring makes its wear resistance significantly better than that of plastic clips, greatly improving the connector's plugging and unplugging performance, extending its service life, and ensuring that the female and male terminals always maintain a reliable and stable connection under frequent plugging and unplugging operations. This can meet the needs of applications such as power batteries that have high requirements for connection stability and durability.

[0043] In some embodiments, please continue reading Figure 1 and Figure 2 To facilitate hearing the sound of the metal spring 5 striking the mother shell 1 and to easily observe the engagement of the first engaging part 6 and the second engaging part 7, the first engaging part 6 includes a through hole, and the second engaging part 7 includes a locking protrusion. Thus, when the locking protrusion passes through the through hole to achieve engagement, the sound can be better propagated through the through hole, and the operator can observe through the through hole whether the locking protrusion is accurately engaged, further improving the convenience of operation and the intuitiveness of confirming the connection status.

[0044] In some embodiments, please refer to Figure 3To facilitate smoother insertion of the metal spring 5 into the female housing 1, the metal spring 5 is configured as follows: the male plug 2 has a front end 21 for insertion into the female housing 1; the metal spring 5 includes a first end 51 near the front end 21 and a second end 52 away from the front end 21, the first end 51 is connected to the male plug 2, and the second end 52 is spaced apart from the male plug 2; a second snap-fit ​​portion 7 is provided at the second end 52; the protrusion height of the second end 52 relative to the male plug 2 is greater than the distance between the inner wall surface of the female housing 1 and the top surface 22 of the male plug 2, so as to compress the female housing 1.

[0045] The male plug 2 has a front end 21 for insertion into the female housing 1. The front end 21 of the male plug 2 can be understood as the end of the male plug 2 that first enters the female housing 1.

[0046] The metal spring 5 includes a first end 51 near the front end 21 and a second end 52 away from the front end 21. The first end 51 is connected to the male plug 2, and the second end 52 is spaced apart from the male plug 2; that is, the first end 51 is the fixed end, and the second end 52 is the movable end. Furthermore, since the second end 52 protrudes relative to the male plug 2, its height is greater than that of the first end 51. This design ensures that during insertion, the lower first end 51 enters the female housing 1 first, followed by the higher second end 52. Therefore, the metal spring 5 itself has a guiding function, allowing for smoother insertion into the female housing 1.

[0047] Furthermore, the second locking part 7 is provided at the second end 52. Since the second end 52 protrudes and is movable, it can more easily generate elastic deformation when it contacts the inner wall of the mother shell 1. As a result, when the second locking part 7 reaches the position of the first locking part 6, it can more quickly push the second locking part 7 into the first locking part 6, and generate stronger vibration at this time, making the "click" sound louder and crisper.

[0048] The protrusion height of the second end 52 relative to the male plug 2 is greater than the distance between the inner wall surface of the female housing 1 and the top surface 22 of the male plug 2, thus exerting pressure on the female housing 1. Therefore, during the insertion of the male plug 2 into the female housing 1, the second end 52 is compressed by the inner wall of the female housing 1, resulting in significant elastic deformation and thus generating a large elastic force. This not only further stabilizes the position of the male plug 2 within the female housing 1 but also makes the engagement between the first snap-fit ​​portion 6 and the second snap-fit ​​portion 7 more secure, thereby improving the stability of the connection between the male plug 2 and the female housing 1, as well as between the male terminal 4 and the female terminal 3.

[0049] This embodiment of the utility model improves the smoothness of insertion by rationally setting the end structure of the metal spring 5 and utilizing its guiding function. At the same time, the protruding and movable second end 52 generates greater elastic deformation and elastic force, which not only makes the connection between the male plug 2 and the female housing 1 more stable, but also strengthens the electrical connection stability between the male terminal 4 and the female terminal 3.

[0050] In some embodiments, please refer to Figure 3 The metal spring 5 is detachably connected to the male plug 2. Specifically, the top surface 22 of the male plug 2 is provided with a connecting structure 8, which can be integrally formed on the male plug 2 (as shown in the figure) or riveted to the male plug 2. The connecting structure 8 includes an insertion groove 81 extending along the length direction of the male plug 2; the inner wall of the insertion groove 81 may include the top surface 22 of the male plug 2 (as shown in the figure), or it may not include the top surface 22 of the male plug 2 (that is, the inner cavity of the insertion groove 81 is independently set relative to the top surface 22 of the male plug 2). The insertion groove 81 has a closed end near the front end 21 and an insertion entrance away from the front end 21, that is, the opening direction of the insertion entrance is away from the front end 21 of the male plug. In operation, the metal spring 5 is simply inserted into the interior of the insertion groove 81 from the insertion entrance along the length direction of the male plug 2. Furthermore, the first end 51 passes through the inlet and abuts against the inside of the closed end, thereby connecting the metal spring 5 within the connecting structure 8, that is, limiting the metal spring 5 above the male plug 2.

[0051] This embodiment of the invention, through its detachable connection method, offers a simpler and faster operation compared to injection molding the metal spring 5 onto the male plug 2. It eliminates the need for complex injection molding processes, reducing production difficulty and costs. Furthermore, this detachable connection method facilitates replacement of the metal spring 5 when damaged, improving the maintainability of the connector.

[0052] In some embodiments, please refer to Figure 3 , Figure 4 and Figure 5 To reduce the risk of the metal spring 5 automatically retracting from the insertion slot 81, a backstop protrusion 82 is provided within the insertion slot 81, and a backstop arm 53 is provided at the first end 51. Specifically, the connecting structure 8 also includes a backstop protrusion 82 provided within the insertion slot 81. This backstop protrusion 82 can be a block or a strip. In the height direction of the male plug 2, a gap is formed between the backstop protrusion 82 and the bottom wall of the insertion slot 81, allowing the backstop arm 53 to pass through. A backstop arm 53 is provided at the first end 51, with one end connected to the first end 51 and the other end spaced apart from the bottom of the insertion slot 81; that is, one end of the backstop arm 53 is a fixed end, and the other end is a free end that can be freely deformed or moved.

[0053] The anti-reverse arm 53 passes through the gap and engages with the anti-reverse protrusion 82 on the side near the front end 21. The specific process of the anti-reverse arm 53 passing through the gap is as follows: when the metal spring 5 is inserted into the insertion groove 81 from the insertion port, the anti-reverse arm 53 first undergoes elastic deformation, allowing the free end to pass over the anti-reverse protrusion 82. Then, the anti-reverse arm 53 returns to its original shape, and its free end engages with the side of the anti-reverse protrusion 82 near the front end 21. The specific process of the anti-reverse arm 53 engaging with the anti-reverse protrusion 82 is as follows: when installing the metal spring 5, the metal spring 5 is first inserted into the insertion groove 81 along the insertion port. When the first end 51 reaches the position of the anti-reverse protrusion 82, the anti-reverse arm 53, due to its elasticity, will deform and bend inward under the pressure of the inner wall of the insertion groove 81. As the metal spring 5 continues to be inserted, when the anti-reverse arm 53 passes the anti-reverse protrusion 82, the free end of the anti-reverse arm 53 will be reset under the action of elastic restoring force, thereby locking onto the side of the anti-reverse protrusion 82 near the front end 21.

[0054] This embodiment of the invention reduces the risk of the metal spring 5 automatically retracting from the insertion slot. When the metal spring 5 is inserted into the insertion slot 81, the anti-retraction arm 53 and the anti-retraction protrusion 82 cooperate to form an effective anti-retraction structure. During connector use, even if subjected to vibration or external pulling, the anti-retraction arm 53 remains firmly engaged with the anti-retraction protrusion 82 near the front end 21 of the male plug 2, preventing the metal spring 5 from easily detaching from the insertion slot. This ensures the reliability of the connection between the metal spring 5 and the male plug 2, thereby maintaining the overall stability of the connector.

[0055] In some embodiments, please refer to Figure 3 The anti-reverse arm 53 is set along the length of the male plug 2. This setting makes the elastic deformation direction of the anti-reverse arm 53 adapt to the insertion direction of the male plug 2. During the insertion of the metal spring 5, the anti-reverse arm 53 is more likely to undergo elastic deformation and pass over the anti-reverse protrusion 82, and then can quickly return to its original shape to achieve locking, making the operation more convenient and efficient.

[0056] In some embodiments, please refer to Figure 3 In order to allow the metal spring 5 to deform fully and to make the overall connector structure more compact, the connection structure 8 is provided with a clearance notch 83. Specifically: the connection structure 8 also includes a clearance notch 83, and the insertion groove 81 surrounds the clearance notch 83; in the height direction of the male plug 2, the second end 52 extends out of the clearance notch 83 to abut against the inner wall surface of the female housing 1.

[0057] Thus, in the height direction of the male plug 2, the clearance notch 83 provides sufficient space for the second end 52 to move, allowing it enough room to elastically deform when compressed by the inner wall of the female housing 1. When the male plug 2 is inserted into the female housing 1, the second end 52 extends out from the clearance notch 83 and contacts the inner wall of the female housing 1. Since the protrusion height of the second end 52 relative to the male plug 2 is greater than the distance between the inner wall surface of the female housing 1 and the top surface 22 of the male plug 2, it will be compressed by the inner wall of the female housing 1. At this time, the existence of the clearance notch 83 prevents the second end 52 from being unable to deform sufficiently due to space constraints, ensuring that the metal spring 5 can generate sufficient elastic force to further stabilize the position of the male plug 2 within the female housing 1. In addition, the setting of the clearance notch 83 also makes the entire connector structure more compact, reducing unnecessary space occupation.

[0058] In some embodiments, please refer to Figure 6 and Figure 7 To enhance the bending resistance of the metal spring 5, that is, to enable the metal spring 5 to provide greater elastic force, the second end 52 is formed with multiple bending segments; from the front end 21 of the male plug 2 to the rear end of the male plug 2, the distance between each bending segment and the male plug 2 gradually increases.

[0059] Specifically, these bent segments are arranged sequentially, with adjacent bent segments forming a certain angle. Through this design, when the metal spring 5 is compressed by the inner wall of the mother shell 1, the multiple bent segments work together to effectively disperse the external force, significantly improving the bending resistance of the metal spring 5. Due to the enhanced bending resistance, the metal spring 5 can withstand greater pressure during elastic deformation, thereby generating greater elastic force, further stabilizing the connection between the male plug 2 and the mother shell 1, and ensuring the reliability of the electrical connection between the male terminal 4 and the female terminal 3.

[0060] In some embodiments, please refer to Figure 8 The multiple bending segments include a first bending segment 521, a first straight segment 522, a second bending segment 523, and a second straight segment 524 connected in sequence. The first bending segment 521 is close to the front end 21 of the male plug-in 2, and the second straight segment 524 is far away from the front end 21 of the male plug-in 2. The first bending segment 521 and the second bending segment 523 are respectively inclined relative to the length direction of the male plug-in 2. The distance between the second straight segment 524 and the male plug-in 2 is greater than the distance between the first straight segment 522 and the male plug-in 2. The second snap-fit ​​part 7 is disposed on the second straight segment 524, and the second straight segment 524 abuts against the female shell 1.

[0061] This design further optimizes the structure of the metal spring 5. The inclined arrangement of the first bending section 521 and the second bending section 523 allows the metal spring 5 to more flexibly adapt to the shape of the inner wall of the female housing 1 during insertion, reducing insertion resistance. In particular, the larger gap between the second straight section 524 and the male plug 2 enhances the elastic potential energy storage capacity of the metal spring 5. When the second straight section 524 abuts against the female housing 1, it can release greater elastic force, further improving the stability of the connection between the male plug 2 and the female housing 1. Moreover, placing the second snap-fit ​​part 7 on the second straight section 524 makes the snap-fit ​​process more stable and reliable, ensuring that the electrical connection between the male terminal 4 and the female terminal 3 remains in good condition during long-term use, reducing the risk of circuit failure due to unstable connection.

[0062] In some embodiments, please refer to Figure 8 To facilitate the downward pressing of the metal spring 5, separating its first locking part 6 from its second locking part 7, and thus removing the metal spring 5 from the insertion slot 81, the following configuration was implemented: the multiple bending segments also include a third bending segment 525 connected to the second straight segment 524 and a third straight segment 526 connected to the third bending segment 525; the third bending segment 525 is inclined relative to the length direction of the male plug-in 2, and the distance between the third straight segment 526 and the male plug-in 2 is greater than the distance between the second straight segment 524 and the male plug-in 2; with the first locking part 6 and the second locking part 7 engaged, the third bending segment 525 and the third straight segment 526 extend out of the female housing 1. In other words, the third bending segment 525 and the third straight segment 526 provide points of force application during disassembly.

[0063] When it is necessary to remove the metal spring 5, the operator can directly apply force to the third bent section 525 and the third straight section 526 extending from the mother housing 1. Utilizing the lever principle, the first locking part 6 and the second locking part 7 can be disengaged in a relatively effortless manner, thus easily removing the metal spring 5 from the mother housing 1. This design not only improves the efficiency of installing and removing the metal spring 5, but also facilitates subsequent maintenance and component replacement of the connector, reduces maintenance costs, extends the overall service life of the connector, and further enhances the convenience and practicality of the product in actual applications.

[0064] In some embodiments, please refer to Figure 8The angle formed between the first bent segment 521 and the first end 51 is an obtuse angle; and / or, the angle formed between the first straight segment 522 and the first bent segment 521 is an obtuse angle; and / or, the angle formed between the second bent segment 523 and the first straight segment 522 is an obtuse angle; and / or, the angle formed between the third bent segment 525 and the second straight segment 524 is an obtuse angle; and / or, the angle formed between the third straight segment 526 and the third bent segment 525 is an obtuse angle. In general, these obtuse angle designs effectively reduce stress concentration. When the metal spring 5 is subjected to external force, the obtuse angle structure allows the force to be distributed more evenly across all parts of the metal spring 5, preventing damage to the metal spring 5 due to excessive local stress.

[0065] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A metal lockable wire-to-board connector for a power battery, characterized by, include: The female housing is provided with a first snap-fit ​​portion, and the interior of the female housing is used to house the female terminal. A male plug-in is used to insert into the female housing, and the interior of the male plug-in is used to set a male terminal; A metal spring is disposed on the outside of the male plug; the metal spring is provided with a second snap-fit ​​portion; Wherein, the protrusion height of the metal spring relative to the male plug is greater than the distance between the inner wall surface of the female shell and the top surface of the male plug, so that the metal spring will squeeze the female shell after entering the female shell along with the male plug; When the metal spring and the female housing are pressed against each other, the first snap-fit ​​part and the second snap-fit ​​part snap into each other so that the female terminal and the male terminal are connected to each other.

2. The connector according to claim 1, characterized in that, The first snap-fit ​​portion includes a through hole, and the second snap-fit ​​portion includes a snap-fit ​​protrusion.

3. The connector according to claim 1, characterized in that, The male plug has a front end for insertion into the female housing; the metal spring includes a first end near the front end and a second end away from the front end, the first end being connected to the male plug and the second end being spaced apart from the male plug; The second snap-fit ​​portion is disposed at the second end; the protrusion height of the second end relative to the male plug is greater than the distance between the inner wall surface of the female housing and the top surface of the male plug, so as to compress the female housing.

4. The connector according to claim 3, characterized in that, The top surface of the male plug is provided with a connecting structure, the connecting structure including an insertion groove extending along the length direction of the male plug; the insertion groove has a closed end near the front end and an insertion entrance away from the front end; The first end passes through the inlet and abuts against the inside of the closed end.

5. The connector according to claim 4, characterized in that, The connection structure also includes a backstop protrusion disposed in the insertion groove; in the height direction of the male plug, a gap is formed between the backstop protrusion and the bottom wall of the insertion groove; The first end is provided with a backstop arm, one end of which is connected to the first end and the other end is spaced apart from the bottom of the insertion groove; the backstop arm passes through the gap and is engaged with the backstop protrusion on the side near the front end.

6. The connector according to claim 5, characterized in that, The connection structure also includes a clearance notch, and the insertion groove surrounds the clearance notch; In the height direction of the male plug, the second end extends out of the clearance notch to abut against the inner wall surface of the female housing.

7. The connector according to claim 3, characterized in that, The second end has multiple bends; from the front end of the male plug to the rear end of the male plug, the distance between each bend and the male plug gradually increases.

8. The connector according to claim 7, characterized in that, The plurality of bending segments include a first bending segment, a first straight segment, a second bending segment, and a second straight segment connected in sequence, wherein the first bending segment is close to the front end of the male plug and the second straight segment is far from the front end of the male plug; The first bent section and the second bent section are respectively inclined relative to the length direction of the male plug-in, and the distance between the second straight section and the male plug-in is greater than the distance between the first straight section and the male plug-in; the second snap-fit ​​part is disposed on the second straight section, and the second straight section abuts against the female shell.

9. The connector according to claim 8, characterized in that, The plurality of bending segments further includes a third bending segment connected to the second straight segment and a third straight segment connected to the third bending segment; the third bending segment is inclined relative to the length direction of the male plug, and the distance between the third straight segment and the male plug is greater than the distance between the second straight segment and the male plug; With the first and second snap-fit ​​parts snapped together, the third bent section and the third straight section extend out of the mother shell.

10. The connector according to claim 9, characterized in that, The angle formed between the first bent segment and the first end is an obtuse angle; and / or, the angle formed between the first straight segment and the first bent segment is an obtuse angle; and / or, the angle formed between the second bent segment and the first straight segment is an obtuse angle; and / or, the angle formed between the third bent segment and the second straight segment is an obtuse angle; and / or, the angle formed between the third straight segment and the third bent segment is an obtuse angle.

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