Elastic needle assembly, earphone charging box and audio device
By designing a cavity inside the pin and a spring element in the earphone charging case to accommodate the pin, the problem of the pin getting stuck is solved, thus achieving stable charging of the earphones.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN GRANDSUN ELECTRONICS CO LTD
- Filing Date
- 2025-04-08
- Publication Date
- 2026-05-12
AI Technical Summary
In existing technology, the spring pins of the earphone charging case are prone to getting stuck, leading to charging failure.
Design a spring needle assembly including a needle, a guide and an elastic element. A receiving cavity is formed inside the needle, and the elastic element is located inside the receiving cavity. The elastic element abuts against the guide to reduce the entry of external debris and ensure stable movement of the needle.
This effectively reduces the chance of the elastic component getting stuck, ensuring a stable electrical connection between the earphones and the charging case, and achieving a stable charging process.
Smart Images
Figure CN224232980U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of electronic device technology, and in particular to a spring-loaded assembly, an earphone charging case, and an audio device. Background Technology
[0002] The spring-loaded pins on the earphone charging case serve as the charging contact points for electrical connection between the charging case and the earphones. When the earphones are placed in the charging case, the spring-loaded pins contact the earphones, providing the current required for charging.
[0003] In related technologies, the spring pin may get stuck, which may prevent the charging case from charging the earbuds when they are placed inside. Utility Model Content
[0004] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a spring-loaded pin assembly, an earphone charging case, and an audio device, which can reduce the occurrence of spring-loaded pin jamming, thereby enabling the charging case to charge the earphones more stably.
[0005] According to a first aspect embodiment of this application, the spring pin assembly includes:
[0006] A needle, the head of which is used for electrical connection with an earphone, and the needle having a receiving cavity extending through the back of the needle;
[0007] A guide member is partially inserted into the receiving cavity, the guide member is used for electrical connection with the circuit board, and the needle is movably mounted on the guide member;
[0008] An elastic element is disposed within the receiving cavity, with one end of the elastic element abutting against the needle tip and the other end of the elastic element abutting against the guide element.
[0009] The spring pin assembly according to the embodiments of this application has at least the following beneficial effects:
[0010] In the embodiment of this application, a receiving cavity is formed inside the needle, and an elastic element is located within the receiving cavity. The elastic element's location inside the needle effectively isolates it from the outside environment, thereby reducing the likelihood of external liquids or solids entering the space containing the elastic element through the gap in the needle, and thus reducing the possibility of the elastic element getting stuck. The needle can move relatively stably relative to the guide under the elastic force of the elastic element, ensuring a stable electrical connection between the earphones and the needle when the earphones are placed in the earphone charging case, allowing the earphone charging case to charge the earphones.
[0011] According to some embodiments of this application, the needle has a first end and a second end arranged along the length direction of the needle. The first end is used for electrical connection with the earphone, and the second end has a through hole projected along the length direction of the needle. The projection area of the through hole is located within the projection area of the receiving cavity.
[0012] According to some embodiments of this application, the guide includes an abutment portion and a guide portion connected to each other, the abutment portion and the guide portion are arranged along the length direction of the guide, the abutment portion is located in the receiving cavity, the guide portion passes through the through hole and is projected along the length direction of the guide, the projection area of the guide portion is located in the projection area of the abutment portion, and the elastic member abuts against the abutment portion.
[0013] According to some embodiments of this application, the needle has a first end and a second end arranged along the length direction of the needle, the first end being used for electrical connection with the earphone, and the first end having a rounded chamfer in its circumferential direction.
[0014] According to some embodiments of this application, the spring needle assembly further includes a protrusion connected to the outer surface of the needle tip, the protrusion surrounding the circumference of the needle tip along the central axis of the needle tip.
[0015] According to some embodiments of this application, the two ends of the spring abut against the needle and the guide, respectively.
[0016] According to some embodiments of this application, when the elastic element is located within the receiving cavity, the length of the elastic element is less than the initial length of the elastic element.
[0017] Embodiments of this application also provide an earphone charging case, comprising:
[0018] case;
[0019] The spring pin assembly of any of the above is installed inside the housing.
[0020] According to some embodiments of this application, the housing is formed with a mounting hole, the needle passes through the mounting hole, and the opening of the receiving cavity is located on the side of the receiving cavity opposite to the mounting hole.
[0021] Embodiments of this application also provide an audio device, including:
[0022] Earphone charging case of any of the above;
[0023] The earphone is movable into or out of the earphone charging case. When the earphone is inside the earphone charging case, the earphone is electrically connected to the pin.
[0024] Additional aspects and advantages of this application 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 this application. Attached Figure Description
[0025] The present application will be further described below with reference to the accompanying drawings and embodiments, wherein:
[0026] Figure 1 This is a schematic diagram of the structure of an audio device in one embodiment of this application, in which the earphones are located inside the earphone charging case;
[0027] Figure 2 This is a schematic diagram of the headphone charging case in one embodiment of this application;
[0028] Figure 3 This is a schematic diagram of the assembly of the spring pin assembly and the housing in one embodiment of this application;
[0029] Figure 4 for Figure 3 A magnified view of a portion of point A in the middle.
[0030] Figure label:
[0031] 100, spring pin assembly; 110, needle tip; 110a, receiving cavity; 110b, first end; 110c, second end; 110d, through hole; 120, guide; 121, abutment part; 122, guide part; 130, elastic element; 140, protrusion; 200, housing; 200a, mounting hole; 300, earphone; 400, circuit board. Detailed Implementation
[0032] The embodiments of this application are described in detail below. Examples of these embodiments 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 this application, and should not be construed as limiting this application.
[0033] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0034] In the description of this application, "several" means one or more, "multiple" 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.
[0035] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.
[0036] In the description of this application, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0037] In related technologies, the spring-loaded pin assembly includes a needle tip and a needle tube. A cavity is formed inside the needle tube, allowing the needle tip to move relative to the needle tube within the air conditioner. An elastic element is internally located within the cavity and abuts against the needle tip. During use of the earphone charging case, dust and debris from the external environment, as well as sweat from the earphones, may enter the cavity through the gap between the needle tip and the needle tube. Over time, the sweat may crystallize, and these crystals, along with dust and debris, may become trapped between the elastic element and the sidewall of the needle tube, hindering the stretching and compression of the elastic element. When the earphones push the needle to compress the elastic element, the elastic element may struggle to return to its original position, resulting in a short extension distance for the needle tip. This makes it difficult to maintain contact between the earphone's charging port and the needle tip, preventing the charging case from charging the earphones.
[0038] In this embodiment, a receiving cavity 110a is formed within the needle 110, and an elastic member 130 is located within the receiving cavity 110a, abutting against both the needle 110 and the guide member 120. The receiving cavity 110a formed within the needle 110 itself to accommodate the elastic member 130 reduces the entry of external dust, debris, and sweat into the receiving cavity 110a, thereby reducing the likelihood of the elastic member 130 being stuck. This allows the earphone 300 charging case to maintain a more stable electrical connection with the earphone 300 for charging.
[0039] This application provides an audio device; please refer to [link / reference]. Figure 1 The audio device includes a charging case for earphones 300 and earphones 300. When earphones 300 are located inside the charging case, the charging case is electrically connected to the earphones 300 so that the charging case charges the earphones 300.
[0040] For example, the type of earphone 300 can be Bluetooth earphone 300, sports earphone 300, ear-hook non-in-ear earphone 300, running earphone 300, ear-hook Bluetooth earphone 300, bone conduction Bluetooth earphone 300, or ear-hook running earphone 300.
[0041] This application also provides a charging case for the earphones 300; please refer to [link / reference]. Figure 2 The earphone 300 charging case includes a housing 200 and a spring-loaded assembly 100, which is installed inside the housing 200. When the earphone 300 is inside the earphone 300 charging case, the earphone 300 is electrically connected to the spring-loaded assembly 100, so that the circuit board 400 inside the earphone 300 charging case is electrically connected to the earphone 300 through the spring-loaded assembly 100.
[0042] For example, please refer to Figure 2 There are multiple spring-loaded components 100, and each earphone 300 is electrically connected to at least two spring-loaded components 100. The positive and negative terminals of the battery of the earphone 300 are electrically connected to different spring-loaded components 100, respectively.
[0043] For example, the earphone 300 charging case also includes a circuit board 400, which is installed inside the housing 200. When the earphone 300 is electrically connected to the circuit board 400, the earphone 300 charging case can charge the earphone 300.
[0044] Specifically, this application provides a spring pin assembly 100, please refer to... Figure 3 and Figure 4 The spring-loaded pin assembly 100 is used in the charging case of the earphone 300. The spring-loaded pin assembly 100 includes a pin 110, a guide 120, and an elastic member 130. The head of the pin 110 is used for electrical connection with the earphone 300, and the pin 110 forms a receiving cavity 110a extending through its back. The guide 120 partially passes through the receiving cavity 110a and is used for electrical connection with the circuit board 400; the pin 110 is movably mounted on the guide 120. The elastic member 130 is disposed within the receiving cavity 110a, with one end of the elastic member abutting against the pin 110 and the other end abutting against the guide 120.
[0045] Exemplarily, the needle 110 is movable relative to the elastic member 130 along its length. The needle 110 is able to move closer to or further away from the guide member 120 along its length. When the earphone 300 is inserted into the earphone 300 charging case, the earphone 300 can push the needle 110 to further compress the elastic member 130, thereby moving it closer to the guide member 120. When the earphone 300 is removed from the earphone 300 charging case, the needle 110 can move away from the guide member 120 under the elastic force of the elastic member 130.
[0046] For example, when the earphone 300 is located inside the earphone 300 charging case, the earphone 300 is electrically connected to the pin 110.
[0047] In this embodiment of the application, a receiving cavity 110a is formed inside the needle 110, and the elastic member 130 is located inside the receiving cavity 110a. The elastic member 130 is located inside the needle 110, and the needle 110 can effectively isolate the elastic member 130 from the outside environment, thereby reducing the entry of external liquids or solids into the space where the elastic member 130 is located through the gap in the needle 110, and thus reducing the possibility of the elastic member 130 being stuck. The needle 110 can move relatively stably relative to the guide member 120 under the elastic force of the elastic member 130, so that when the earphone 300 is inserted into the earphone 300 charging case, the earphone 300 can be relatively stably electrically connected to the needle 110, so that the earphone 300 charging case can charge the earphone 300.
[0048] In one embodiment, please refer to Figure 4 The housing 200 has a mounting hole 200a, through which the needle 110 passes. The opening of the receiving cavity 110a is located on the side of the receiving cavity 110a away from the mounting hole 200a.
[0049] In the embodiment of this application, the opening of the receiving cavity 110a is located on the side of the receiving cavity 110a opposite to the mounting hole 200a. The opening of the receiving cavity 110a is as far away from the external environment as possible, which can further reduce the entry of external debris and sweat into the receiving cavity 110a.
[0050] In one embodiment, please refer to Figure 4 The needle 110 has a first end 110b and a second end 110c arranged along the length direction of the needle 110. The first end 110b is used for electrical connection with the earphone 300. The second end 110c forms a through hole 110d, which is projected along the length direction of the needle 110. The projection area of the through hole 110d is located within the projection area of the receiving cavity 110a.
[0051] For example, the receiving cavity 110a is located between the first end 110b and the second end 110c along the length direction of the needle 110.
[0052] In the embodiment of this application, the second end 110c of the needle 110 converges toward the central axis of the needle 110 to form a through hole 110d, and the guide member 120 penetrates through the through hole 110d to partially enter the receiving cavity 110a. The opening of the end of the needle 110 toward the guide member is relatively small, and the second end 110c surrounds the axial direction of the guide member 120, which can reduce the displacement of the needle 110 in directions other than along the length direction of the needle 110, making the movement of the needle 110 more stable and precise.
[0053] It is understood that other embodiments of this application are not limited to the projection area of the through hole 110d formed at the second end 110c being located within the projection area of the receiving cavity 110a. Exemplarily, the projection area of the through hole 110d covers the projection area of the receiving cavity 110a.
[0054] In one embodiment, please refer to Figure 4 The guide member 120 includes an abutment portion 121 and a guide portion 122 connected to each other. The abutment portion 121 and the guide portion 122 are arranged along the length direction of the guide member 120. The abutment portion 121 is located in the receiving cavity 110a. The guide portion 122 passes through the through hole 110d and is projected along the length direction of the guide member 120. The projection area of the guide portion 122 is located within the projection area of the abutment portion 121. The elastic member 130 abuts against the abutment portion 121.
[0055] For example, the abutting portion 121 abuts against the second end 110c on the side of the second end 110c facing the receiving cavity 110a. Projected along the length direction of the needle tip 110, the projection area of the through hole 110d is located within the projection area of the abutting portion 121.
[0056] In the embodiment of this application, the projection area of the guide portion 122 is located within the projection area of the abutment portion 121. The guide portion 122 can guide the movement of the needle 110. The smaller outer diameter of the guide portion 122 can reduce the manufacturing cost of the spring needle assembly 100 to a certain extent. Furthermore, the abutment portion 121 is located within the receiving cavity 110a and can abut against the second end 110c. During the process of the earphone 300 being removed from the earphone charging case, the abutment portion 121 can limit the movement of the needle 110, reducing the possibility of the needle 110 disengaging from the guide portion 120.
[0057] In one embodiment, please refer to Figure 4 The needle 110 has a first end 110b and a second end 110c arranged along the length of the needle 110. The first end 110b is used for electrical connection with the earphone 300, and the first end 110b has a rounded chamfer in the circumferential direction.
[0058] For example, the first end 110b is substantially cylindrical in shape, with a rounded chamfer formed on the circumferential side of the cylinder opposite to the second end 110c.
[0059] In this embodiment of the application, the first end 110b is used for electrical connection with the earphone 300, and the first end 110b has a rounded chamfer in its circumferential direction. During the process of inserting the earphone 300 into the earphone 300 charging case, the rounded chamfer of the first end 110b can reduce the pressure of the pin 110 on the earphone 300, thereby reducing the possibility of damage to the earphone 300 caused by the spring pin assembly 100. Furthermore, stress concentration is less likely to occur in the circumferential direction of the first end 110b, resulting in a longer service life for the pin 110.
[0060] It is understood that other embodiments of this application do not limit whether the first end 110b has a rounded chamfer.
[0061] In one embodiment, please refer to Figure 4 The spring needle assembly 100 also includes a protrusion 140, which is connected to the outer surface of the needle 110 and surrounds the circumference of the needle 110 along the central axis of the needle 110.
[0062] For example, the shape of the bump 140 is a ring block.
[0063] In the embodiment of this application, the spring needle assembly 100 has a protrusion 140 on the outer surface of the needle 110. The protrusion 140 can abut against the housing 200 of the earphone 300 charging case, so that the housing 200 can limit the movement of the needle 110, thereby reducing the possibility of the needle 110 and the housing 200 of the earphone 300 charging case detaching from each other.
[0064] It is understood that other embodiments of this application are not limited to whether the spring pin assembly 100 is provided with the protrusion 140.
[0065] In one embodiment, please refer to Figure 4 The guide member 120 has a rounded chamfer on the circumference of the end opposite to the receiving cavity 110a.
[0066] For example, the end of the guide member 120 away from the receiving cavity 110a is generally cylindrical, and the edge of the end of the cylinder away from the receiving cavity 110a is formed with a rounded chamfer.
[0067] For example, the guide portion 122 has a rounded chamfer in the circumferential direction away from the receiving cavity 110a.
[0068] In the embodiment of this application, the end of the guide member 120 away from the receiving cavity 110a, that is, the end of the guide member 120 facing the circuit board 400, is formed with a rounded chamfer. The rounded chamfer can reduce the pressure generated by the guide member 120 on the circuit board 400, thereby reducing the possibility of damage to the circuit board 400 caused by the guide member 120.
[0069] It is understood that other embodiments of this application do not limit whether the guide 120 has a rounded chamfer.
[0070] In one embodiment, the elastic element 130 is a spring, and the two ends of the spring abut against the needle 110 and the guide 120, respectively.
[0071] For example, the elastic element 130 is a helical spring, and the length direction of the elastic element 130 is arranged parallel to the length direction of the needle 110. The elastic element 130 can be stretched or compressed along its length direction.
[0072] In the embodiment of this application, the elastic element 130 is a spring with good elasticity. The cavity wall of the receiving cavity 110a formed by the needle 110 slides with the spring, thereby guiding the axial deformation of the elastic element 130. The axial deformation of the elastic element 130 is relatively stable and can reduce the radial deformation of the elastic element 130.
[0073] It is understood that other embodiments of this application are not limited to the elastic element 130 being a spring. Exemplarily, the elastic element 130 is a rubber block or a silicone block, and the elastic element 130 is capable of compression under the action of an external force.
[0074] In one embodiment, when the elastic member 130 is located within the receiving cavity 110a, the length of the elastic member 130 is less than the initial length of the elastic member 130.
[0075] It should be noted that the initial length of the elastic element 130 is the length of the elastic element 130 when it is not subjected to tension or compression. When the elastic element 130 is subjected to tension, its length is greater than its initial length; when the elastic element 130 is subjected to compression, its length is less than its initial length.
[0076] In the embodiment of this application, when the elastic member 130 is located within the receiving cavity 110a, the elastic member 130 can always be in a compressed state, and the elastic member 130 can continuously provide a pushing force to the needle 110. When the earphone 300 is inserted into the earphone 300 charging case, the pushing force provided by the elastic member 130 to the needle 110 can push the needle 110 toward the earphone 300, so that the contact between the earphone 300 and the needle 110 is more stable, and the needle 110 is less likely to detach from the charging port of the earphone 300.
[0077] The above embodiments are merely illustrative of the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and all should be covered within the scope of the specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of protection.
Claims
1. A spring pin assembly, characterized in that, For the earphone charging case, including: A needle, the head of which is used for electrical connection with an earphone, and the needle having a receiving cavity extending through the back of the needle; A guide member is partially inserted into the receiving cavity, the guide member is used for electrical connection with the circuit board, and the needle is movably mounted on the guide member; An elastic element is disposed within the receiving cavity, with one end of the elastic element abutting against the needle tip and the other end of the elastic element abutting against the guide element.
2. The spring pin assembly according to claim 1, characterized in that, The needle has a first end and a second end arranged along the length direction of the needle. The first end is used for electrical connection with the earphone, and the second end has a through hole projected along the length direction of the needle. The projection area of the through hole is located within the projection area of the receiving cavity.
3. The spring pin assembly according to claim 2, characterized in that, The guide member includes an abutment portion and a guide portion connected to each other. The abutment portion and the guide portion are arranged along the length direction of the guide member. The abutment portion is located in the receiving cavity. The guide portion passes through the through hole and is projected along the length direction of the guide member. The projection area of the guide portion is located within the projection area of the abutment portion. The elastic member abuts against the abutment portion.
4. The spring pin assembly according to claim 1, characterized in that, The needle has a first end and a second end arranged along the length of the needle. The first end is used for electrical connection with the earphone, and a rounded chamfer is formed in the circumferential direction of the first end.
5. The spring pin assembly according to claim 1, characterized in that, The spring needle assembly also includes a protrusion connected to the outer surface of the needle tip, the protrusion surrounding the circumference of the needle tip along the central axis of the needle tip.
6. The spring pin assembly according to claim 1, characterized in that, The elastic element is a spring, and the two ends of the spring abut against the needle and the guide respectively.
7. The spring pin assembly according to claim 6, characterized in that, When the elastic element is located within the receiving cavity, the length of the elastic element is less than the initial length of the elastic element.
8. An earphone charging case, characterized in that, include; case; The spring pin assembly as described in any one of claims 1 to 7 is installed within the housing.
9. The earphone charging case according to claim 8, characterized in that, The housing has a mounting hole, the needle passes through the mounting hole, and the opening of the receiving cavity is located on the side of the receiving cavity opposite to the mounting hole.
10. An audio device, characterized in that, include: The earphone charging case as described in claim 9; The earphone is movable into or out of the earphone charging case. When the earphone is inside the earphone charging case, the earphone is electrically connected to the pin.