Elastic sheet connector and charging box

Abstract

An elastic sheet connector comprises a main body part which is formed by extending along the vertical direction, a welding part which is formed by continuously extending from the lower end of the main body part, a connecting part which is formed by vertically bending from the top end of the main body part, and a first elastic arm and a second elastic arm which are respectively formed by bending and extending downwards from the outer edge of the connecting part, each of the first elastic arm and the second elastic arm comprises a vertical part, an extension arm and an arc-shaped contact part; the vertical part is formed by bending and extending downwards from the outer edge of the connecting part; the extension arm is formed by obliquely extending outwards from the vertical part to the direction far away from the main body part; the arc-shaped contact part is formed by continuously extending from the extension arm and then bending reversely; the inner extending arm is formed by obliquely extending inwards and downwards from the tail end of the arc-shaped contact part; and the held part is formed by vertically bending downwards from the tail end of the inner extending arm. The utility model further discloses a charging box.

Description

Technical Field

[0001] The present application relates to the field of electrical connectors, and in particular to a spring connector and a charging box. Background Art

[0002] Shrapnel connectors are widely used in electronic devices and are used to contact and connect various electronic components or grounding. However, for different application scenarios, the structure of the shrapnel connector needs to be changed to adapt to different usage scenarios. For example, in the fields of mobile phones and tablets, the shrapnel is usually mounted on the printed circuit board, and then the connection object is electrically contacted with the elastic contact part of the shrapnel from the top or side. This application environment is basically in contact with the connection object from the front. Charging boxes are widely used in electronic devices such as TWS. They are used to recharge small electronic devices and store electronic devices. The charging box needs to be provided with two cavities for accommodating TWS earphones, and the cavities need to be provided with electrical contact elements with the TWS earphones. Usually, elastic needles or shrapnel can be used to connect the TWS earphones, but the elastic needles are more expensive.

[0003] Patent application No. 202322408947.3 of the People's Republic of China discloses a shrapnel solution for a charging box. Two shrapnels, one positive and one negative, are placed inside a TWS earphone jack to connect to the earphones. However, the shrapnel structure is thin and lacks a protective design for the elastic arms, making it susceptible to damage from the insertion of foreign objects. Utility Model Content

[0004] In view of this, it is necessary to provide a spring connector and a charging box that can accommodate two accommodating cavities.

[0005] In order to solve the above technical problems, the present application provides a spring connector, including a main body extending in a vertical direction, a welding part extending from the lower end of the main body, a connecting part vertically bent from the top of the main body, and a first elastic arm and a second elastic arm respectively bent downward and extended from the outer edge of the connecting part. The first elastic arm and the second elastic arm both include a vertical part bent downward from the outer edge of the connecting part, an extended arm extending obliquely outward from the vertical part toward a direction away from the main body, an arc-shaped contact part extended from the extended arm and then bent in the opposite direction, an inner extended arm extending obliquely inward and downward from the end of the arc-shaped contact part, and a retained part bent vertically downward from the end of the inner extended arm.

[0006] Preferably, the distance between the arc-shaped contact portions of the first elastic arm and the second elastic arm is the widest point of the spring connector in the transverse direction.

[0007] Preferably, the lower side of the main body portion extends outward and then bends toward the first elastic arm and the second elastic arm to form a fixing wing. In the forward projection, the fixing wing is located between the pair of arc-shaped contact portions.

[0008] Preferably, the main body portion extends outward near the upper end of the connecting portion and then bends in the opposite direction to form a limiting protrusion, and the limiting protrusion is located behind the pair of vertical portions. The lateral width of the limiting protrusion is greater than the width of the pair of vertical portions of the first elastic arm and the second elastic arm, that is, the outer edge of the limiting protrusion protrudes laterally outward of the vertical portion.

[0009] Preferably, the welding portion is formed by vertically extending downward from the lower end of the main body, and the welding portion is located obliquely below the first elastic arm and the second elastic arm.

[0010] Preferably, the welding portion and the main body portion are on the same plane, a welding hole is passed through the middle of the welding portion, and a welding area is formed by electroplating around the welding hole.

[0011] Preferably, a smooth rib is formed by stamping and protruding the lower end of the extension arm and the outer surface of the arc-shaped contact portion, and the smooth rib slowly protrudes outward from the end of the extension arm.

[0012] Preferably, the angle between the first elastic arm and the second elastic arm is 90-120 degrees.

[0013] In order to solve the above technical problems, the present application also provides a charging box, including the aforementioned spring connector and a shell, the shell is provided with a first headphone jack and a second headphone jack, the main body of the spring connector is fixed in the shell, and the arc-shaped contact portion and part of the extension arm of the first elastic arm and the second elastic arm extend into the first headphone jack and the second headphone jack respectively.

[0014] Preferably, the shrapnel connector is defined as a first shrapnel connector, and the charging box also includes a pair of second shrapnel connectors. The first headphone jack and the second headphone jack are respectively installed with a second shrapnel connector. The first shrapnel connector serves as the negative pole of the first headphone jack and the second headphone jack at the same time, and the pair of second shrapnel connectors serve as the positive pole of the first headphone jack and the second headphone jack.

[0015] The shrapnel connector of the present application is formed by setting a main body and bending the top of the main body to form a connecting part, and then extending from different positions of the outer edge of the connecting part to form a first elastic arm and a second elastic arm. The first elastic arm and the second elastic arm extend into the first headphone jack and the second headphone jack of the charging box respectively, so that two wireless headphones can be connected at the same time through one shrapnel connector, which can effectively reduce the use of shrapnel connectors and reduce material and manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 This is a diagram showing the location of the spring terminals in the charging box for this application;

[0018] Figure 2 A three-dimensional diagram of the first spring element of the spring element connector of the present application;

[0019] Figure 3 This is a front view of the negative electrode spring of this application;

[0020] Figure 4 A three-dimensional diagram of the second spring of the spring connector of the present application;

[0021] Figure 5 This is a cross-sectional view of the second spring piece of this application.

[0022] Description of Reference Numerals

[0023] First spring connector 10; main body 11; fixed wing 111; limiting protrusion 112; connecting portion 12; first elastic arm 13; second elastic arm 13'; vertical portion 131; extension arm 132; arc-shaped contact portion 133; inner extension arm 134; retained portion 135; welding portion 14; welding holes 141, 241; welding area 142; second spring connector 20; substrate 21; first substrate section 211; second substrate section 212; tensioning portion 22; contact elastic arm 23; flat The row extension portion 231; the first inclined arm 232; the arc-shaped contact portion 233; the second inclined arm 234; the pre-pressed portion 235; the smooth ribs 236, 136; the welding foot 24; the wing 25; the first wing section 251; the second wing section 252; the third wing section 253; the fourth wing section 254; the first pre-pressed piece 255; the second pre-pressed piece 256; the headphone contact 30; the conductive portion 31; the conductive surface 32; the conductive contact 30 is connected to the first headphone jack S1; the second headphone jack S2. DETAILED DESCRIPTION

[0024] To make the purpose, technical solutions and advantages of this application more clear, the technical solutions of this application will be described clearly and completely below in conjunction with the specific embodiments of this application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of this application, not all of them.

[0025] See also Figure 1 As shown, the charging box of this application is mainly used in the field of wireless headphones, as a charging station and warehouse, to charge and store wireless headphones. Figure 1 The Y direction is shown as vertically upward.

[0026] Wireless earphones generally include left and right earphones, so the charging box includes a first earphone jack S1 and a second earphone jack S2. As shown in the figure, the positions of S1 and S2 roughly indicate the positions of the earphone jacks. The first earphone jack S1 and the second earphone jack S2 are connected to the battery in the charging box through spring connectors 10 and 20, and the wireless earphones are electrically connected to the spring connectors 10 and 20 through earphone contacts 30. The earphone contacts 30 include a conductive portion 31 connected to the wireless earphones and a conductive surface 32 exposed outside the wireless earphones. The conductive surface 32 is electrically connected to the spring connectors 10 and 20. Each wireless earphone is provided with at least two earphone contacts 30.

[0027] The spring connector includes a first spring connector 10 and a pair of second spring connectors 20. The first spring connector 10 can electrically contact the headphone contacts 30 of two wireless headphones at different locations. Specifically, the first spring connector 10 is exposed in the first headphone jack S1 and the second headphone jack S2, respectively. Each headphone jack also includes a second spring connector 20 that mates with the first spring connector 10. In this embodiment, the first spring connector 10 serves as the negative connector, and the second spring connector 20 serves as the positive connector. In other embodiments, the first spring connector 10 can also serve as the positive connector, and the second spring connector 20 can also serve as the negative connector.

[0028] See also Figure 2 、 Figure 3 As shown, the first spring connector 10 of the present application includes a main body 11 extending in a vertical direction, a welding portion 14 extending from the lower end of the main body 11, a connecting portion 12 vertically bent from the top of the main body 11, and a first elastic arm 13 and a second elastic arm 13' extending downward from different positions of the outer edge of the connecting portion 12.

[0029] The main body 11 is used to be fixed in the shell of the charging box. The main body 11 extends in a vertical direction. The two lateral sides of the middle of the main body 11 are bent toward the first elastic arm 13 and the second elastic arm 13' to form fixed wings 111. The upper end of the main body 11 near the position of the connecting portion 12 extends outward on both lateral sides and then bends in the opposite direction to form a limiting protrusion 112. The width of the main body 11 at the position of the fixed wings 111 is greater than the width of the rest of the main body 11, and the limiting protrusion 112 is superimposed with two layers of plate materials. The connecting portion 12 is a horizontal plate-like structure. The first elastic arm 13 and the second elastic arm 13' are formed by bifurcating and extending from the connecting portion 12. Preferably, the angle between the first elastic arm 13 and the second elastic arm 13' is 90-120 degrees, which can be determined according to the size and exposure position of the charging box, or it may be outside the range of this angle.

[0030] Each of the first elastic arm 13 and the second elastic arm 13' includes a vertical portion 131 formed by bending downward and extending from the outer edge of the connecting portion 12, an outer extension arm 132 formed by extending obliquely outward from the vertical portion 131 toward a direction away from the main body 11, an arc-shaped contact portion 133 formed by continuing to extend from the outer extension arm 132 and then bending in the opposite direction, an inner extension arm 134 formed by extending obliquely inward and downward from the end of the arc-shaped contact portion 133, and a retained portion 135 formed by bending vertically downward from the end of the inner extension arm 134.

[0031] The arc-shaped contact portion 133 and the surface of the extension arm 132 are punched outward to form a smooth rib 136, and the smooth rib 136 slowly protrudes outward from the end of the extension arm 132 to avoid forming resistance. Figure 3 As shown, the limiting protrusion 112 is located behind the vertical portion 131, and the lateral width of the limiting protrusion 112 extends outwardly beyond the lateral outer side of the vertical portion 131. The width between the arcuate contact portions 133 of the first elastic arm 13 and the second elastic arm 13' is the largest, and the fixing wing 111 is located behind the arcuate contact portions 133. The front projection of the fixing wing 111 is located between the pair of arcuate contact portions 133, and the retained portion 135 is located below the fixing wing 111.

[0032] The welding portion 14 is formed by extending downward from the main body 11 and is located below the first elastic arm 13 and the second elastic arm 13'. The welding portion 14 includes a welding hole 141 and a welding area 142, and the welding area 142 is electroplated with a precious metal, such as gold. After the first shrapnel connector 10 is installed in the charging box, the main body 11 is fixed to the outer shell or other components of the charging box, and the limiting protrusion 112, the fixing wing 111, that is, the welding portion 13 can be fixed to the charging box. The arc-shaped contact portion 133 of the first elastic arm 13 and the second elastic arm 13' and part of the extension arm 132 extend into the first headphone jack S1 and the second headphone jack S2 of the charging box respectively to make electrical contact with a pair of wireless headphones.

[0033] The first elastic connector 10 of the present application is provided with a main body 11 and bent at the top of the main body 11 to form a connecting portion 12, and then extends from different positions of the outer edge of the connecting portion 12 to form a first elastic arm 13 and a second elastic arm 13'. The first elastic arm 13 and the second elastic arm 13' extend into the first headphone jack S1 and the second headphone jack S2 of the charging box respectively, so that two wireless headphones are connected at the same time through one elastic connector 10. In actual application, the use of elastic connectors can be effectively reduced, and material and manufacturing costs can be reduced.

[0034] Please continue reading Figure 4 、 Figure 5 As shown, the second spring connector 20 of the present application includes a vertically arranged substrate 21, a tensioning portion 22 formed by reverse bending from the top of the substrate 21, a contact spring arm 23 formed by bending downward and extending from the tensioning portion 22, a welding foot 24 formed by extending downward from the bottom of the substrate 21, and a protective wing 25 bent outward from both sides of the substrate 21 to limit the elastic height of the contact spring arm 23.

[0035] The base plate 21 includes a first section 211 and a second section 212 extending upward from the first section 211. The solder leg 24 extends downward from the first section 211 and is provided with a solder hole 241 and a soldering area (not numbered) plated with a precious metal. The tensioning portion 22 is formed by a reverse bend from the top of the second section 212.

[0036] The contact spring arm 23 includes a parallel extension portion 231 extending vertically downward from the tensioning portion 22, a first inclined arm 232 extending obliquely downward from the lower end of the parallel extension portion 231 and bending away from the substrate 21, an arcuate contact portion 233 extending from the first inclined arm 232 and then bending in the opposite direction, a second inclined arm 234 extending from the arcuate contact portion 233 toward the substrate 21, and a pre-pressed portion 235 bent vertically downward from the distal end of the second inclined arm 234. The parallel extension portion 231 is parallel to the second substrate section 212.

[0037] The wings 25 are formed by bending and extending from both lateral sides of the first base section 211 toward the contact spring arm 23. The second base section 212 and the parallel extension 231 are located above the wings 25. The wings 25 include a first wing section 251, whose outer edge aligns with the first inclined arm 232; a second wing section 252, connected to the first wing section 251 and extending downward at a greater angle; a third wing section 253, connected to the second wing section 252 and extending vertically downward; and a fourth wing section 254, located below the third wing section 253. The first wing section 251 is bent inward on both sides to form a second pre-compression piece 256 that suppresses the first inclined arm 232. The wing width of the fourth wing section 254 is smaller than the wing width of the third wing section 253 . The fourth wing section 254 corresponds to the pre-pressed portion 235 and is bent inward to form a first pre-pressed sheet 255 for pressing the pre-pressed portion 235 .

[0038] The inclination slope of the first inclined arm 232 is roughly the same as the inclination slope of the outer edge of the first wing section 251, and the extension length of the first inclined arm 232 is greater than the extension length of the first wing section 251, so that the arc-shaped contact portion 233 is away from the second wing section 252 and sufficient space is left between the two. The third wing section 253 corresponds to the second inclined arm 234 to prevent overpressure. The first pre-compression plate 255 presses the free end of the contact elastic arm 23, and the second pre-compression plate 256 presses the upper end of the contact elastic arm 23 so that all positions of the contact elastic arm 23 are within the predetermined space, and the first inclined arm 232 and the second pre-compression plate 256 are both inclined to reserve space for pressing downward from the top.

[0039] After the second shrapnel connector 20 of the present application is installed in the charging box, the parallel extension portion 231 and the portion of the first inclined arm 232 located at the first wing section 251 are hidden in the charging box and fixed, that is, the parallel extension portion 231 and the second section 212 of the substrate can be used to fix or limit the upper position. The arc-shaped contact portion 233 and the lower half of the first inclined arm 232 extend into the first headphone jack S1 or the second headphone jack S2. The end of the first inclined arm 232 and the arc-shaped contact portion 233 are stamped to form a smooth rib 236 consistent with the first shrapnel connector 10.

[0040] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0041] The above embodiments merely represent preferred implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A spring connector, characterized in that: It includes a main body extending in a vertical direction, a welding part extending from the lower end of the main body, a connecting part vertically bent from the top of the main body, and a first elastic arm and a second elastic arm respectively bent downward and extended from the outer edge of the connecting part. The first elastic arm and the second elastic arm each include a vertical part bent downward from the outer edge of the connecting part, an extension arm extending obliquely outward from the vertical part toward a direction away from the main body, an arc-shaped contact part formed by continuing to extend from the extension arm and then bending in the reverse direction, an inner extension arm extending obliquely inward and downward from the end of the arc-shaped contact part, and a retained part formed by bending vertically downward from the end of the inner extension arm.

2. The spring connector according to claim 1, wherein: The distance between the arc-shaped contact portions of the first elastic arm and the second elastic arm is the widest point of the spring connector in the transverse direction.

3. The spring connector according to claim 2, wherein: The lower side of the main body portion extends outward and then bends toward the first elastic arm and the second elastic arm to form a fixing wing. In a forward projection, the fixing wing is located between the pair of arc-shaped contact portions.

4. The spring connector according to claim 3, wherein: The main body portion extends outward near the upper end of the connecting portion and then bends in the opposite direction to form a limiting protrusion. The limiting protrusion is located behind the pair of vertical portions. The lateral width of the limiting protrusion is greater than the width of the pair of vertical portions of the first elastic arm and the second elastic arm, that is, the outer edge of the limiting protrusion protrudes laterally outward from the vertical portion.

5. The spring connector according to claim 4, wherein: The welding portion is formed by vertically extending downward from the lower end of the main body portion, and the welding portion is located obliquely below the first elastic arm and the second elastic arm.

6. The spring connector according to claim 5, wherein: The welding portion and the main body portion are located on the same plane. A welding hole is passed through the middle of the welding portion, and a welding area is formed by electroplating around the welding hole.

7. The spring connector according to claim 4, wherein: The lower end of the extension arm and the outer surface of the arc-shaped contact portion are stamped and protruded to form smooth ribs, and the smooth ribs slowly protrude outward from the end of the extension arm.

8. The spring connector according to claim 1, wherein: The included angle between the first elastic arm and the second elastic arm is 90-120 degrees.

9. A charging box, characterized in that: It includes a spring connector and a shell as described in any one of claims 1 to 8, wherein a first headphone jack and a second headphone jack are provided on the shell, the main body of the spring connector is fixed in the shell, and the arc-shaped contact portion and part of the extended arm of the first elastic arm and the second elastic arm extend into the first headphone jack and the second headphone jack respectively.

10. The charging box according to claim 9, characterized in that: The shrapnel connector is defined as a first shrapnel connector, and the charging box also includes a pair of second shrapnel connectors. The first headphone jack and the second headphone jack are respectively installed with a second shrapnel connector. The first shrapnel connector serves as the negative pole of the first headphone jack and the second headphone jack at the same time, and the pair of second shrapnel connectors serve as the positive pole of the first headphone jack and the second headphone jack.

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