Wave spring and plug-in terminal connector

Abstract

The application discloses a wave spring and a plug-in terminal connector with the wave spring, wherein the wave spring comprises a plurality of spring blades, the spring blades are arranged in a ring shape, the spring blades are sequentially connected and stacked in an axial direction, the spring blades are provided with abutting portions, the abutting portions are at least provided with three, the abutting portions are distributed around the outside of the spring blades, and the abutting portions can be expanded and contracted in the radial direction of the spring blades. The plug-in terminal connector has the practical performance of adapting to the length of the plug pin due to the wave spring, and has the superior current overload capacity due to the abutting portions. Under the elastic effect of the wave spring, the plug-in terminal connector has the stable connection capacity and the controllable spring blade connection quantity, has the controllable plug-in force, is convenient for electrical connection, is convenient for the plug-in of the plug pin, and can provide comfortable use experience. In addition, the wave spring has small and simple structure, so that the plug-in terminal connector has low manufacturing cost and is more beneficial to product production.

Description

Technical Field

[0001] This invention relates to the field of electrical connection device technology, and in particular to a wave spring and a plug-in terminal connector. Background Technology

[0002] Electrical connectors enable electrical connections and signal transmission between devices, components, and systems, and are essential basic components for forming a complete system.

[0003] Among existing electrical connectors, there is a type of elastic connector where the pin side contacts the inside of the socket, and the pin is inserted into the socket, so the pin is electrically connected to the socket through a spring. However, the elastic element in existing elastic connectors is relatively long and bulky, resulting in a large insertion and removal force on the pin, which is not conducive to the insertion and removal of the pin. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes a wave spring capable of connecting a pin and a sleeve, thereby achieving an electrical connection.

[0005] The present invention also proposes a plug terminal connector with a wave spring.

[0006] According to a first aspect of the present invention, the wave spring includes a plurality of spring plates arranged in a ring. The spring plates are sequentially connected and stacked along the axial direction. Each spring plate is provided with abutment top. At least three abutment tops are provided and distributed around the outer side of the spring plate. The abutment tops are retractable along the radial direction of the spring plate.

[0007] According to a first aspect of the present invention, the wave spring has at least the following advantages: When the wave spring is inserted into the plug-in terminal connector, the abutment extends and retracts in the radial direction of the spring plate, stably abutting against the inner wall of the sleeve. In the plug-in terminal connector, when the pin is inserted into the wave spring, the pin opens the spring plate, and the abutment extends outward along the radial direction of the spring plate, thus stably abutting against the inner wall of the sleeve, thereby forming a connection between the wave spring and the sleeve. The wave spring is small in size, and its volume can be set according to the connection length of the pin, making it highly adaptable. It also avoids the problem of excessive elastic force due to a larger volume, which would hinder the insertion and removal of the pin. Furthermore, providing three or more abutments ensures stable overload capacity, making it even more practical.

[0008] According to some embodiments of the present invention, the reed has a first end and a second end, the first end and the second end can abut against each other, and the first end and the second end cooperate to form an opening.

[0009] According to some embodiments of the invention, the opening is located in one of the abutments.

[0010] According to some embodiments of the present invention, two adjacent reeds are connected by a connecting piece.

[0011] According to some embodiments of the present invention, the reed further includes a plurality of connecting portions, the two ends of the connecting portions being respectively connected to adjacent abutment tops, the connecting piece being located on one side of the abutment top or on one side of the connecting portion, and the connecting piece being used to connect the abutment tops of two adjacent reeds.

[0012] According to some embodiments of the present invention, a guide portion is further provided on one side of the reed, the guide portion being located between two adjacent abutments.

[0013] According to some embodiments of the present invention, the abutment top may be provided with 3 to 6 abutments.

[0014] According to a second aspect embodiment of the present invention, the plug terminal connector includes the wave spring described in any one of the first aspect embodiments, and further includes:

[0015] A sleeve, wherein an annular receiving cavity is provided inside the sleeve, a wave spring is disposed in the receiving cavity, and the abutment can abut against the cavity wall; and

[0016] A pin, which can be inserted into the wave spring.

[0017] According to a second aspect of the present invention, the pin terminal connector has at least the following advantages: The pin terminal connector, due to its wave spring, possesses practical performance adaptable to the pin length; simultaneously, due to the sufficient abutment, the pin terminal connector has superior current overload capacity; and under the elastic action of its wave spring, it has stable connection capability and controllable insertion / removal force, facilitating both electrical connection and pin insertion / removal, providing a comfortable user experience; furthermore, because the wave spring has a small and simple structure, the pin terminal connector has low manufacturing cost, making product production easier.

[0018] According to some embodiments of the present invention, the insertion end of the pin is provided with an arc surface, which can fit against the guide portion of the wave spring.

[0019] According to some embodiments of the present invention, the two ends of the wave spring along the axial direction can respectively abut against the two ends of the receiving cavity.

[0020] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0022] Figure 1 This is a schematic diagram of a plug-in terminal connector according to an embodiment of the present invention;

[0023] Figure 2 for Figure 1 A vertical half-sectional view of the plug-in terminal connector is shown;

[0024] Figure 3 for Figure 2 A schematic diagram of the wave springs of the plug terminal connector is shown (three are provided at the top);

[0025] Figure 4 for Figure 1 The diagram shows a horizontal half-section of the plug terminal connector (the dashed lines are radially bisected segments passing through the center of the sleeve);

[0026] Figure 5 for Figure 4 The diagram shows the spatial clearance when the wave spring and the outer circumferential surface of the pin are engaged.

[0027] Figure 6 for Figure 4 The diagram shows the spatial clearance when the wave spring mates with the inner wall of the sleeve.

[0028] Figure 7 for Figure 5 The diagram shown illustrates the spatial gap along a straight line when the wave spring of the plug terminal connector mates with the outer circumferential surface of the pin (the straight line is equally divided into...). Figure 5 (The line segments are divided into the same equal parts as shown);

[0029] Figure 8 for Figure 6 The diagram shown illustrates the spatial gap expanding along a straight line when the wave spring of the plug-in terminal connector engages with the inner wall of the sleeve (the straight line is equally divided into...). Figure 6 (The line segments are divided into the same equal parts as shown);

[0030] Figure 9 This is a schematic diagram of a wave spring according to another embodiment of the present invention (four are provided at the top);

[0031] Figure 10 for Figure 9The diagram shows a schematic of the space gap expanding along a straight line when the wave spring of the plug terminal connector mates with the outer circumferential surface of the pin (the wave spring has four abutments).

[0032] Figure 11 for Figure 9 The diagram shows a schematic of the space gap expanding in a straight line when the wave spring of the plug terminal connector engages with the inner wall of the sleeve (the wave spring has four abutments).

[0033] Figure 12 This is a schematic diagram of a wave spring according to another embodiment of the present invention (five are provided at the top);

[0034] Figure 13 This is a schematic diagram of a wave spring according to another embodiment of the present invention (six are provided at the top).

[0035] Figure label:

[0036] Wave spring 10; spring leaf 11; top abutment 111; first end 112; second end 113; opening 114; connecting piece 12; guide part 13; connecting part 14;

[0037] Sleeve 20; Receiving cavity 21; Cavity wall 211;

[0038] Pin 30; arc surface 31; pin surface 311. Detailed Implementation

[0039] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0040] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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. Therefore, they should not be construed as limiting this invention.

[0041] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0042] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0043] Reference Figures 1 to 3 According to the first aspect of the present invention, the wave spring 10 includes a plurality of spring plates 11 arranged in a ring. The spring plates 11 are connected and stacked sequentially along the axial direction. Each spring plate 11 is provided with abutment 111. At least three abutment 111 are provided. The abutment 111 are distributed around the outer side of the spring plate 11. The abutment 111 can extend and retract along the radial direction of the spring plate 11.

[0044] The wave spring 10 is applied in a plug-in terminal connector, which includes a sleeve 20 and a pin 30. The sleeve 20 has an annular receiving cavity 21, and the wave spring 10 is disposed in the receiving cavity 21. The top 111 of the spring 10 abuts against the cavity wall 211 of the receiving cavity 21. The pin 30 can be inserted into the wave spring 10.

[0045] Therefore, it is understandable that since the wave spring 10 has a ring structure, the pin 30 can be inserted into the wave spring 10. When the pin 30 is inserted, the pin surface 311 of the pin 30 can abut against the inner side of the spring plate 11 of the wave spring 10, so that the abutting top 111 of the wave spring 10 expands outward in the radial direction of the spring plate 11, and finally the abutting top 111 abuts against the cavity wall 211 of the receiving cavity 21 of the sleeve 20, thus forming a connection between the pin 30, the wave spring plate 11 and the sleeve 20.

[0046] By extending and retracting the top 111 in the radial direction of the spring 11, the top 111 extends outward and can stably abut against the inner wall of the sleeve 20. In the plug terminal connector, when the pin 30 is inserted into the wave spring 10, the pin 30 opens the spring 11, and the top 111 can extend outward along the radial direction of the spring 11, thereby stably abutting against the inner wall of the sleeve 20, thus forming a connection that can be connected to the sleeve 20 through the wave spring 10. The wave spring 10 is small in size, and its volume can be set according to the connection length of the pin 30. By connecting multiple identical spring pieces 11 in sequence along the axial direction, the wave spring 10 can be adapted to the length of the pin 30, which means that the wave spring 10 has strong applicability. At the same time, by controlling the number of connecting spring pieces 11, the elasticity of the wave spring pieces 11 can also be controlled, thereby preventing the elasticity from being too large and facilitating the insertion and removal of the pin 30. In addition, with more than three abutment points 111, that is, more connection points between the wave spring 10 and the inner wall of the sleeve 20, a stable current overload capacity can be guaranteed, which makes it more practical.

[0047] Reference Figure 1 , Figure 3 as well as Figure 4 In some embodiments of the present invention, the reed 11 is further provided with a first end 112 and a second end 113, the first end 112 and the second end 113 being able to abut against each other, and the first end 112 and the second end 113 cooperating to define an opening 114. Specifically, as Figures 4 to 6 As shown, the opening 114 may be located in one of the tops 111. Figure 4 This is a horizontal half-sectional view of the plug-in portion of the connector. The figure shows that opening 114 is located in one of the abutment tops 111. It can be inferred that when the pin 30 is inserted, the spring 11 expands radially outward, increasing the size of opening 114, thus moving the first end 112 and the second end 113 further apart. Simultaneously, the pin surface 311 of the pin 30 abuts against the inner side of the spring 11. As it expands, both sides of the abutment top 111 exert outward pressure, resulting in a greater abutment force against the inner wall of the sleeve 20, making the connection more stable. Alternatively, the abutment top 111 can be designed as a smooth spherical surface for better contact and fit with the cavity wall 211.

[0048] It should be noted that, as Figure 5 as well as Figure 7 As shown, Figure 5 This is a schematic diagram showing the spatial clearance when the wave spring and the outer circumferential surface of the pin are fitted together. Figure 7 The figure shows a schematic diagram of the engagement between the wave spring 10 of the plug-in terminal connector and the outer circumferential surface of the pin 30 along a straight line. The straight line reference in this unfolded diagram is a straight line of equal length to the outer circumference of the pin 30, and this straight line is divided into equal parts. Figure 3 The dashed lines shown divide the line segments into the same equal parts, so the line segments between the straight lines and curves in the unfolded diagram are the same as those between the dashed lines. Figure 3The line segments between the wave spring 10 and the outer circumferential surface (i.e., needle surface 311) of the pin 30 are of equal length. Taking the wave spring 10 with three abutments 111 as an example, after the wave spring 10 and the needle surface 311 of the pin 30 are unfolded along a straight line, the spatial gap formed between the wave spring 10 and the needle surface 311 of the pin 30 exhibits a smooth cosine-like waveform change after three-dimensional unfolding. The peaks represent the abutments 111 of the spring 11, the line segment region between the abutments 111 and the needle surface 311 represents the gap between the abutments 111 and the needle surface 311, and the troughs represent the starting point of contact between the spring 11 and the needle surface 311. That is, the line segment region between the needle surface 311 and the contact starting point represents the interference between the spring 11 and the pin 30. Therefore, it can be understood that, since the wave spring 10 and the needle surface 311 of the pin 30 unfold along a straight line, the spatial gap formed between the wave spring 10 and the needle surface 311 of the pin 30 exhibits a smooth cosine-like waveform change after three-dimensional unfolding. Thus, the larger the area of ​​this line segment region, the greater the interference between the reed 11 and the pin 30, and the greater the squeezing force exerted on the reed 11 by the pin 30. The greater the squeezing force on the reed 11 by the pin 30, the greater the pressure on the top of the reed 111. The inner wall of the sleeve 20 is larger; at the same time, it can also be understood that since the spatial gap formed between the wave spring 10 and the needle surface 311 of the pin 30 presents a smooth cosine-like waveform change after three-dimensional unfolding, the length of the line segment in the line segment region also presents a cosine-like waveform change. Therefore, the deformation of the spring 11 in the structure, as well as the contact state with the pin 30 and the stress state under force, can maintain itself in a cosine-like gradual change state, thereby ensuring the reliability of the spring 11 structure and the efficient use of materials.

[0049] It is also important to note that, such as Figure 8 as well as Figure 6 As shown, Figure 6 This is a schematic diagram of the spatial clearance when the wave spring mates with the inner wall of the sleeve. Figure 8 This is a schematic diagram showing the engagement of the wave spring 10 of the plug-in terminal connector with the inner wall of the sleeve 20 along a straight line. Similarly, as shown in the figure, the straight line reference in this unfolded diagram is a straight line with the same circumference as the inner wall (i.e., cavity wall 211) of the sleeve 20, and this straight line is divided into equal parts. Figure 3 The dashed lines shown divide the line segments into the same equal parts, so the line segments between the straight lines and curves in the unfolded diagram are the same as those between the dashed lines. Figure 3The line segments between the wave spring 10 and the inner wall 211 of the sleeve 20 are of equal length. Taking the wave spring 10 with three abutments 111 as an example, after the wave spring 10 and the inner wall of the sleeve 20, i.e., the cavity wall 211 of the accommodating cavity 21, are unfolded along a straight line, the spatial gap formed between the wave spring 10 and the cavity wall 211 exhibits a smooth cosine-like waveform change after three-dimensional unfolding. The peak represents the point on the outer side of the contact point between the spring 11 and the needle surface 311. The line segment region between this point and the cavity wall 211 represents the interference between the spring 11 and the needle 30. The trough represents the starting point of the contact between the abutment 111 and the cavity wall 211. Therefore, it can be understood that since the wave spring 10 and the cavity wall 211 exhibit a smooth cosine-like waveform change after three-dimensional unfolding, the wave peak and the cavity wall 211 are of equal length. The larger the area of ​​the line segment region between the walls 211, the greater the interference between the spring 11 and the pin 30, and the greater the squeezing force on the spring 11 from the pin 30. The greater the squeezing force on the spring 11 from the pin 30, the greater the distance between the top 111 and the inner wall of the sleeve 20, and the stronger the connection stability. At the same time, it can also be understood that since the spatial gap formed between the wave spring 10 and the cavity wall 211 exhibits a smooth cosine-like waveform change after three-dimensional unfolding, the length of the line segment in the line segment region also exhibits a cosine-like waveform change. Therefore, the deformation of the spring 11 in the structure, the contact state with the cavity wall 211, and the stress state under force can all maintain itself in a cosine-like gradual change state, thereby ensuring the reliability of the spring 11 structure and the efficient use of materials.

[0050] It should also be noted that, referring to Figures 7 to 9 When the spring 11 has four abutments 111, since the diameter of the pin 30 remains unchanged, its length remains unchanged when unfolded along a straight line. At this time, the peaks of the abutments 111 of the spring 11 are four, which represents the gap between the abutments 111 and the pin surface 311. The smaller the area of ​​the line segment region between the abutments 111 and the pin surface 311, the smaller the interference between the spring 11 and the pin 30, and the smaller the squeezing force of the pin 30 on the spring 11. The smaller the squeezing force of the pin 30 on the spring 11, the smaller the abutment 111 abuts against the inner wall of the sleeve 20, and the relatively weaker the connection stability. Similarly, the length of the line segments in the line segment region also changes in a cosine-like waveform. Therefore, the deformation of the reed 11 in the structure, as well as its contact state with the cavity wall 211 and the stress state under force, can maintain itself in a cosine-like gradual change state, thereby ensuring the reliability of the reed 11 structure and the efficient use of materials; the same applies when multiple abutment tops 111 are provided.

[0051] However, it should be emphasized that even if more abutments 111 are provided on the spring 11, reducing the abutting force of the abutments 111, there is still interference between the spring 11 and the needle surface 311, so the wave spring 10 still has connection stability. It can also be understood that due to the increasing number of abutments 111, there are more contact points between the spring 11 and the sleeve 20, thus meeting a greater overload capacity.

[0052] In other embodiments, reference is made to Figure 10 as well as Figure 11 As can be seen from the above embodiments, the spring 11 abutting the top 111 can be provided with 3 to 6, or even more. At the same time, the position of its opening 114 is not limited, and it can be provided on the top 111 or between adjacent tops 111.

[0053] Reference Figure 3 as well as Figure 2 In some embodiments of the present invention, two adjacent spring pieces 11 are connected by a connecting piece 12. The connecting piece 12 may be integrally formed with the spring piece 11, or it may be welded to the spring piece 11, or it may be a snap-fit ​​connection that facilitates disassembly or connection. Thus, a fixed number of spring pieces 11 can be set according to specific connection requirements and connected sequentially by the connecting piece 12.

[0054] Furthermore, the connecting piece 12 can be located on one side of the abutment 111. Specifically, the connecting piece 12 is disposed on the upper or lower side of the abutment 111, that is, in the axial direction of the wave spring 10. The connecting piece 12 is used to connect the abutments 111 of two adjacent spring pieces 11, so it is only necessary to connect the other spring piece 11 on one side of the spring piece 11. The connecting piece 12 is disposed on both sides of the top, which can increase the contact area between the abutment 111 and the cavity wall 211, thereby enhancing the connection strength of the spring pieces 11 and further increasing the current overload capacity. In some other embodiments, the spring piece 11 also includes a plurality of connecting portions 14, the number of which can be determined by the number of abutments 111. The two ends of the connecting portions 14 are respectively connected to one end of two adjacent abutments 111, thereby connecting the abutments 111 in series. At this time, the connecting piece 12 can also be set between adjacent abutment tops 111, i.e. on one side of the connecting part 14. Of course, the position of the connecting piece 12 can also be set in other positions, such as on one side of the connection between the connecting part 14 and the abutment top 111, as long as it can connect one side of the other spring 11 on one side of the spring 11, so that the spring 11 can be stacked in the axial direction to increase its length, which is suitable for connecting terminals of different lengths.

[0055] Reference Figures 1 to 4In some embodiments of the present invention, a guide portion 13 is further provided on one side of the reed 11, and the guide portion 13 is located between two adjacent abutment tops 111. One end of the guide portion 13 is provided on one side of the reed 11 and is located between two adjacent abutment tops 111, so when the pin 30 is inserted into the wave spring 10, the pin surface 311 first contacts the guide portion 13 to open the reed 11, thereby preventing the edge of the reed 11 from scratching the surface of the pin 30. The guide portion 13 located between two adjacent abutment tops 111 can facilitate the pin 30 to open the side of the reed 11 that is in contact with the pin 30, and can also increase the contact area between the two.

[0056] According to a second aspect embodiment of the present invention, the plug terminal connector has the practical performance of adapting to the length of the plug 30 due to its wave spring 10. At the same time, due to the sufficient abutment 111, the plug terminal connector has excellent current overload capacity. Under the elastic action of its wave spring 10, it has stable connection capability and controllable spring 11 connection quantity with controllable insertion and removal force, which facilitates electrical connection and also facilitates the insertion and removal of the plug 30, providing a comfortable user experience. Furthermore, since the structure of the wave spring 10 is small and simple, the plug terminal connector has low manufacturing cost and is more conducive to product production.

[0057] Reference Figures 1 to 2 In some embodiments of the present invention, the insertion end of the pin 30 is provided with an arc surface 31, which can fit against the guide portion 13 of the wave spring 10. The arc surface 31 facilitates the insertion of the pin 30 and also facilitates contact with the guide portion 13 in the wave spring 10, thereby facilitating the fit between the pin 30 and the guide portion 13 and the inner surface of the spring 11.

[0058] Reference Figure 2 In some embodiments of the present invention, the two ends of the wave spring 10 along the axial direction can respectively abut against the two ends of the receiving cavity 21 to prevent the wave spring 10 from falling out of the sleeve 20.

[0059] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A wave spring, characterized in that, include: A plurality of springs are arranged in a ring and are sequentially connected and stacked along the axial direction. Each spring has a top abutment, and at least three top abutments are provided. The top abutments are distributed around the outer side of the springs and can extend and retract along the radial direction of the springs. Adjacent springs are connected by connecting pieces. Each spring also includes a plurality of connecting portions, the two ends of which are respectively connected to adjacent top abutments. The connecting pieces are located on one side of the top abutment or on one side of the connecting portion and are used to connect the top abutments of two adjacent springs.

2. The wave spring according to claim 1, characterized in that, The reed has a first end and a second end, which can abut against each other, and the first end and the second end cooperate to form an opening.

3. The wave spring according to claim 2, characterized in that, The opening is located in one of the tops of the abutment.

4. The wave spring according to claim 1, characterized in that, A guide portion is also provided on one side of the reed, and the guide portion is located between two adjacent abutments.

5. The wave spring according to claim 1, characterized in that, The top can be provided with 3 to 6 abutments.

6. A plug-in terminal connector, characterized in that, The plug-in terminal connector further includes the wave spring as described in any one of claims 1 to 5, and further includes: A sleeve, wherein an annular receiving cavity is provided inside the sleeve, a wave spring is disposed in the receiving cavity, and the abutment can abut against the cavity wall; and A pin, which can be inserted into the wave spring.

7. The plug-in terminal connector according to claim 6, characterized in that, The insertion end of the pin is provided with an arc surface, which can fit into the guide portion of the wave spring.

8. The plug-in terminal connector according to claim 6, characterized in that, The two ends of the wave spring along the axial direction can respectively abut against the two ends of the accommodating cavity.

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