Earphone and electronic equipment

Abstract

The invention relates to the technical field of electronic products, in particular to an earphone and electronic equipment, the earphone comprises a shell, a conductive contact and a conductive elastic sheet, the shell is internally provided with an elastic sheet fixing groove, the elastic sheet fixing groove is internally provided with a first fixing area and a second fixing area, the conductive contact comprises a connecting end and an elastic arm, and the elastic arm is provided with a charging contact surface; the conductive elastic sheet comprises an elastic free end and an elastic clamping part, and the elastic free end is connected with the connecting end. The elastic clamping part of the conductive elastic piece is matched with the elastic piece fixing groove in the shell, when the elastic clamping part and the first fixing area are assembled, interaction force generated when the conductive elastic piece and the conductive contact are connected is blocked, the connecting position of the conductive elastic piece and the circuit board is prevented from being accidentally damaged in the installation process, and meanwhile the service life of the conductive elastic piece is prolonged. And the connection stability of the conductive contact and the conductive elastic sheet is further enhanced through the cooperation of the second fixing area and the elastic clamping part, so that the structural stability of the charging circuit is improved under the condition that the assembly difficulty is reduced.

Description

Technical Field

[0001] This invention relates to the field of electronic product technology, and more particularly to a pair of headphones and an electronic device. Background Technology

[0002] Wireless earphones are widely used in daily work and life for communication, watching videos, and listening to music. Existing wireless earphones generally have conductive contacts on the shell that connect to the internal circuit board to charge the earphones in the charging case. To reduce manufacturing difficulty, conductive contacts and conductive springs are used to connect the charging circuit between the charging case and the internal circuit board of the earphones. For example, a pair of earphones and electronic devices disclosed in Chinese Patent Publication No. CN217741884U uses a structural design in which conductive contacts pass through the earphone shell and abut against the conductive springs on the circuit board.

[0003] However, in the process of realizing this invention, the applicant discovered that due to the movable gap between the circuit board and the housing, the insertion direction of the conductive contact does not correspond to the position of the conductive spring. The conductive contact may directly push against the conductive spring, causing the conductive spring to undergo undesigned deformation or damage. At the same time, the contact force between the conductive contact and the conductive spring will be directly transmitted to the connection between the conductive spring and the circuit board, which will negatively affect the connection stability between the conductive spring and the circuit board during the assembly process and affect the service life of the subsequent headphone charging module. Summary of the Invention

[0004] This invention discloses an earphone and an electronic device to solve the technical problem in related technologies where the conductive spring-related structure is easily damaged during the assembly of earphones.

[0005] To solve the above problems, the present invention adopts the following technical solution: The first aspect of the present invention discloses an earphone, comprising: The housing has an installation cavity inside, and a spring clip fixing groove is provided inside the installation cavity. The spring clip fixing groove has a first fixing area and a second fixing area along a first direction, where the first direction is the depth direction of the spring clip fixing groove. The housing has a contact fixing groove, and a fixing post is provided inside the contact fixing groove. A conductive contact, wherein the fixed end of the conductive contact is connected to a fixed post, the conductive contact includes a connecting end and an elastic arm, the elastic arm is disposed between the fixed end and the connecting end of the conductive contact, and a charging contact surface is provided on the elastic arm; A conductive spring, the fixed end of which is used to connect to a circuit board, the conductive spring includes an elastic free end and an elastic snap-fit ​​part, the elastic snap-fit ​​part is disposed between the fixed end and the elastic free end of the conductive spring, the elastic free end is detachably connected to the connection end of the conductive contact, the elastic snap-fit ​​part is used to snap-fit ​​with a first fixed area to achieve pre-fixation between the housing and the circuit board, the elastic snap-fit ​​part is also used to snap-fit ​​with a second fixed area to achieve enhanced elastic deformation of the elastic free end and the elastic arm.

[0006] Furthermore, when the elastic snap-fit ​​part is snapped into the first fixed area, the elastic free end, the connecting end, and the elastic arm are located in the first plane, and the first direction is perpendicular to the first plane.

[0007] Furthermore, when the elastic snap-fit ​​part engages with the second fixed area, the circuit board abuts against the inner wall of the housing through the fixed end of the conductive spring piece.

[0008] Furthermore, the mounting cavity is provided with a boss, the spring clip fixing groove is provided on the boss, the boss is provided with an abutment surface, the abutment surface is located close to the spring clip fixing groove, the abutment surface is used to realize the circuit board abutting against the inner wall of the housing through the fixed end of the conductive contact when the elastic snap-fit ​​part snaps into the second fixing area.

[0009] Furthermore, the elastic free end includes a semi-closed shaft hole, the opening of which is away from the elastic arm, and the connecting end is provided with a shaft that mates with the shaft hole.

[0010] Furthermore, the projection of the shaft hole along the first direction onto the circuit board is located outside the circuit board; And / or, the shaft hole protrudes from the circuit board along a second direction, the second direction being opposite to the first direction.

[0011] Furthermore, the elastic free end includes two parallel support arms, which are wound along the length direction to form a semi-closed shaft hole. An installation gap is provided between the two support arms, and the installation gap includes a gradient section located at the opening of the shaft hole, which gradually decreases from the opening of the shaft hole along the length direction of the support arm.

[0012] Furthermore, the connecting end and the shaft form a T-shaped structure, with the shaft located at the end of the connecting end along its length direction. The thickness of the connecting end matches the width of the installation gap, and the width direction of the connecting end corresponds to the length direction of the installation gap. And / or, the diameter of the shaft hole is smaller than the diameter of the shaft rod.

[0013] Furthermore, the contact fixing groove is provided with a guide post, and the guide post is provided with a first guide surface, a second guide surface or a third guide surface. The first guide surface is correspondingly provided with the fixing post, and the first guide surface cooperates with the fixing post to fix the fixed end of the conductive contact. The second guide surface is correspondingly provided with the elastic arm. When the elastic snap-fit ​​part is snap-fitted with the first fixing area, there is a first preset gap between the second guide surface and the elastic arm. There is a second preset gap between the third guide surface and the inner wall of the contact fixing groove, and the connecting end passes through the second preset gap.

[0014] A second aspect of the present invention discloses an electronic device including the aforementioned headphones.

[0015] The technical solution adopted in this invention can achieve the following beneficial effects: This invention utilizes the elastic snap-fit ​​portion of the conductive spring to engage with the spring fixing groove on the housing, allowing the earphone assembly process to begin in a relaxed and stable environment. The assembly relationship is established first, then tightened and locked, reducing assembly difficulty. Simultaneously, the elastic snap-fit ​​portion, in conjunction with the first fixing area, prevents the transmission of the interaction force between the conductive spring and the conductive contact to the circuit board when the assembly relationship is established, avoiding accidental damage to the connection between the conductive spring and the circuit board during installation. Furthermore, the second fixing area, in conjunction with the elastic snap-fit ​​portion, further enhances the connection stability between the conductive contact and the conductive spring. This achieves improved structural safety and stability of the charging circuit while reducing assembly difficulty. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the earphone in this application; Figure 2 This is a schematic diagram of the internal structure of the earphone in this application; Figure 3 yes Figure 2 A magnified view of a section at point A in the middle; Figure 4 This is a schematic diagram of the internal structure of the earphone from another perspective. Figure 5 yes Figure 4 A magnified view of a section at point B in the middle; Figure 6 This is a schematic diagram of the shell structure of this application; Figure 7 yes Figure 6 A magnified view of a section at point C; Figure 8 This is an exploded view of the headphones in this application; Figure 9 This is a schematic diagram of the structure of the conductive spring sheet of this application; Figure 10 This is a schematic diagram of the conductive contact structure of this application; Figure 11 This is a three-dimensional structural diagram of the connection between the conductive spring and the conductive contact in this application; Figure 12 This is a front view of the conductive spring and conductive contact when connected in this application; Figure 13 This is a left view of the conductive spring and conductive contact of this application when they are connected; Figure 14 This is an assembly diagram of the housing and circuit board of this application; Figure 15 yes Figure 14 A magnified view of a section at point D; Figure 16 This is a schematic diagram of the structure when the flexible snap-fit ​​part and the first fixed area of ​​this application are engaged; Figure 17 This is a schematic diagram of the structure when the elastic snap-fit ​​part and the second fixed area of ​​this application are engaged.

[0018] In the diagram: 10, housing; 110, boss; 111, contact surface; 120, spring retaining groove; 121, first fixing area; 122, second fixing area; 130, contact retaining groove; 131, fixing post; 132, guide post; 20, circuit board; 30, conductive contact; 310, contact fixing end; 320, elastic arm; 321, charging contact surface; 330, connecting end; 331, shaft; 40, conductive spring; 410, spring retaining end; 420, elastic snap-fit ​​part; 421, protrusion; 430, elastic free end; 431, support arm; 432, shaft hole. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0020] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0021] In related technologies, the conductive spring itself has a tiny structural size. The designed contact point 'a' between the conductive spring and the conductive contact, and the connection point 'b' between the conductive spring and the circuit board, are adjacent to each other. During the assembly of wireless headphones, even if the positioning posts on the housing and the positioning holes on the circuit board are used to pre-fix the position of the circuit board, there will still be a certain assembly gap in the radial direction of the positioning posts. This results in a play not only in the axial direction of the positioning posts but also in the radial direction between the circuit board and the housing. When there is a deviation in the installation position of the circuit board and the housing, the insertion direction of the conductive contact will not correspond to point 'a' of the conductive spring. The conductive contact will directly push against the connection point between the conductive spring and the circuit board, causing the conductive spring to undergo undesigned deformation or damage. When the insertion direction of the conductive contact corresponds to point 'b' of the conductive spring, the contact force between the conductive contact and the conductive spring will also be directly transmitted to the connection point between the conductive spring and the circuit board, negatively affecting the connection stability between the conductive spring and the circuit board during the assembly process and affecting the service life of the subsequent headphone charging module.

[0022] To this end, this application provides an earphone that utilizes the elastic snap-fit ​​portion of a conductive spring to cooperate with the spring fixing groove on the housing to initially fix the circuit board and the conductive spring in a first fixing area. At the same time, the elastic snap-fit ​​portion and the first fixing area cooperate to block the interaction force when the conductive spring and the conductive contact are connected, thus preventing accidental damage to the connection between the conductive spring and the circuit board during installation. Furthermore, the second fixing area and the elastic snap-fit ​​portion cooperate to further enhance the connection stability of the conductive contact and the conductive spring, thereby improving the structural stability of the charging circuit while reducing assembly difficulty.

[0023] The following is in conjunction with the appendix Figures 1 to 17 The present application provides a detailed description of the headphones and electronic devices provided through specific embodiments and application scenarios.

[0024] This embodiment provides an earphone, including: Casing 10, such as Figures 2-8As shown, the housing 10 has an installation cavity, and the installation cavity has a spring clip fixing groove 120. The spring clip fixing groove 120 has a first fixing area 121 and a second fixing area 122 along a first direction, the first direction being the depth direction of the spring clip fixing groove 120. The housing 10 has a contact fixing groove 130, and the contact fixing groove 130 has a fixing post 131. Conductive contact 30, such as Figures 10-13 As shown, the conductive contact 30 is used for electrical connection to the circuit board 20 inside the housing 10. Specifically, the conductive contact 30 is electrically connected to the circuit board 20 through a conductive spring 40. The conductive contact 30 is also used for electrical connection to the earphone case. More specifically, the fixed end (i.e., the contact fixed end 310) of the conductive contact 30 is connected to the fixed post 131. The conductive contact 30 includes a connecting end 330 and an elastic arm 320. The elastic arm 320 is disposed between the fixed end and the connecting end 330 of the conductive contact. A charging contact surface 321 is provided on the elastic arm 320. When the charging contact surface 321 abuts against the charging terminal in an external charging device such as the earphone case, the earphone case can charge the battery inside the earphone through the charging contact surface 321 and the circuit board 20 so that the battery can be replenished and recycled. Typically, there are two conductive contacts 30, one of which abuts against the positive charging terminal inside the headphone case, and the other conductive contact 30 abuts against the negative charging terminal inside the headphone case. Preferably, the fixed end, elastic arm 320 and connecting end 330 of the conductive contact 30 are integrally formed to reduce manufacturing costs and enhance the structural strength of the conductive contact 30.

[0025] Conductive spring 40, such as Figure 9 , Figures 11-13 As shown, the fixed end of the conductive spring 40 (i.e., the spring fixed end 410) is used to connect to the circuit board 20 so that when the charging contact surface 321 abuts against the charging terminal in the external charging device such as the earphone box, the charging current passes through the charging circuit formed by the charging contact surface 321, the connecting end 330, the conductive spring 40 and the circuit board 20 in sequence to charge the battery connected to the circuit board 20. Specifically, the conductive spring 40 includes an elastic free end 430 and an elastic snap-fit ​​portion 420. The elastic snap-fit ​​portion 420 is disposed between the fixed end and the elastic free end 430 of the conductive spring 40. The elastic free end 430 is detachably connected to the connection end 330 of the conductive contact 30. The elastic snap-fit ​​portion 420 is used to snap-fit ​​with the first fixing area 121 to achieve initial fixation between the housing 10 and the circuit board 20. For example, when installing and fixing the conductive contact 30 and the circuit board 20 onto the housing 10, the circuit board 20 is first placed into the housing 10, and the elastic snap-fit ​​portion 420 snaps into the first fixing area 121 in the spring fixing groove 120. Figure 16As shown, at this time, the positions of the housing 10, circuit board 20, and conductive spring 40 can be relatively fixed, that is, the conductive spring 40 will not shake with the housing 10. This allows the connection end of the conductive contact 30 to connect with the conductive spring 40 in a stable environment without the constraint of the housing 10, reducing the difficulty of connecting and assembling the conductive contact 30 and the conductive spring 40, and reducing the damage between the conductive contact 30 and the conductive spring 40. At the same time, based on the engagement of the elastic snap-fit ​​part 420 and the first fixed area 121, when the conductive spring 40 is subjected to an installation force at its elastic free end 430, regardless of the direction of the force, the transmission of the force on the conductive spring 40 will mainly concentrate at the elastic snap-fit ​​part 420 and be transmitted to the housing 10. This effectively blocks the transmission of the force to the fixed end of the conductive spring 40, avoiding accidental damage to the connection between the conductive spring 40 and the circuit board 20 due to the installation force. This reduces the risk of damage to the connection between the conductive spring 40 and the circuit board 20 during product assembly, and improves product quality and service life. The elastic snap-fit ​​portion 420 is also used to snap-fit ​​with the second fixing area 122 to enhance the elastic deformation of the elastic free end 430 and the elastic arm 320. For example, after connecting the connecting end of the conductive contact 30 and the elastic free end 430 of the conductive spring sheet 40 under initial fixing in the first fixing area 121, the fixed end of the conductive contact 30 is first installed and fixed onto the fixing post 131 in the contact fixing groove 130. Then, the circuit board 20 is moved towards the housing 10 in the first direction, so that the elastic snap-fit ​​portion 420 passes the first fixing area 121 and snaps-fits with the second fixing area 122. At this time, as... Figure 17 As shown, the second fixing area 122 forces the elastic snap-fit ​​portion 420 to deform towards the fixed end of the conductive spring 40, causing the elastic free end 430 to move towards the fixed end of the conductive spring 40. Then, driven by the elastic free end 430 of the conductive spring 40, the connecting end 330 of the conductive contact 30 is pulled to move synchronously towards the fixed end of the conductive spring 40, causing the elastic free end 430 of the conductive spring 40 and the elastic arm 320 of the conductive contact 30 to undergo synchronous elastic deformation. This elastic deformation acts on the elastic free end 430 and the connecting end 320. The connection point of 30 not only effectively enhances the electrical connection stability of the conductive spring 40 and the conductive contact 30, but also works with the fixed end of the conductive contact 30 to lock the conductive contact 30, conductive spring 40, circuit board 20 and housing 10 together to ensure the fixation of their relative positions, improve the structural stability and safety of the internal components of the headphones, and allow the headphones to be assembled in a relaxed and stable environment first, determine the assembly relationship first, and then tighten and lock the assembly relationship, effectively reducing the difficulty of headphone assembly and production and improving headphone assembly and production efficiency.

[0026] Preferably, the fixed end, the elastic snap-fit ​​portion 420 and the elastic free end 430 of the conductive spring sheet 40 are integrally formed to reduce manufacturing costs and enhance the structural strength of the conductive spring sheet 40.

[0027] In some embodiments, to further improve the assembly efficiency between the housing 10, the circuit board 20, and the conductive contact 30, the elastic free end 430, the connecting end 330, and the elastic arm 320 can be configured to be coplanar, i.e., on a first plane, when the elastic snap-fit ​​portion 420 engages with the first fixing area 121, and the first direction is perpendicular to the first plane. Based on the above structure, since the elastic free end 430, the connecting end 330, and the elastic arm 320 are located on the first plane in the initial fixed state of the conductive spring piece 40 and the housing 10, after establishing the connection between the elastic free end 430 of the conductive spring piece 40 and the connecting end 330 of the conductive contact 30, the fixed end of the conductive contact 30 can be installed into the contact fixing groove 130 with little or no deformation resistance, effectively reducing the assembly relationship determination process. The assembly resistance is reduced, and then, when the elastic snap-fit ​​part 420 is inserted into the second fixing area 122, the elastic snap-fit ​​part 420 is subjected to biased compression by the second fixing area 122, causing the elastic free end 430 and the elastic arm 320 to deform along the length direction of the connecting end 330, thereby enhancing the connection stability between the elastic free end 430 and the connecting end 330. At the same time, the connection between the elastic free end 430 and the connecting end 330 is also subjected to displacement traction of the conductive spring piece 40 in the first direction, causing the elastic free end 430 to undergo elastic deformation in the first direction, further enhancing the connection stability between the elastic free end 430 and the connecting end 330. In this way, the assembly relationship is enhanced and locked by a pressing action from the circuit board 20 to the housing 10, simplifying the headphone assembly process and improving the headphone assembly efficiency.

[0028] It should be noted that the engagement between the elastic snap-fit ​​part 420 and the first fixing area 121 and the second fixing area 122 can be achieved by a cantilever buckle, a U-shaped buckle, or a ball buckle. In this embodiment, the elastic snap-fit ​​part 420 is preferably a U-shaped structure. Protrusions 421 are provided on the outer sides of both ends of the U-shaped structure. Recesses matching the protrusions 421 are respectively provided on the inner walls of the first fixing area 121 and the second fixing area 122. The engagement between the elastic snap-fit ​​part 420 and the first fixing area 121 and the second fixing area 122 is achieved by the engagement of the protrusions 421 and the recesses. In addition, the gap corresponding to the recess of the second fixing area 122 is smaller than the gap corresponding to the recess of the first fixing area 121, so as to achieve compression deformation of the elastic snap-fit ​​part 420. Preferably, the axis of the second fixing area 122 parallel to the first direction is closer to the fixing section of the conductive spring sheet 40 than the axis of the first fixing area 121 parallel to the first direction. In some embodiments, the elastic snap-fit ​​part 420 may be a U-shaped structure, with recesses provided on the outer sides of both ends of the U-shaped structure, and protrusions 421 matching the recesses provided on the inner walls of the first fixing area 121 and the second fixing area 122, respectively. The snap-fit ​​between the elastic snap-fit ​​part 420 and the first fixing area 121 and the second fixing area 122 is achieved by the cooperation of the protrusions 421 and the recesses.

[0029] In some embodiments, to improve the safety of the connection between the conductive spring 40 and the circuit board 20, when the elastic snap-fit ​​part 420 engages with the second fixing area 122, the circuit board 20 abuts against the inner wall of the housing 10 through the fixing end of the conductive spring 40. After the headphones are assembled, the circuit board 20 and the housing 10 are generally locked relative to each other. Based on the above structure, the fixing end of the conductive spring 40 is clamped by the engagement of the circuit board 20 and the inner wall of the housing 10, which not only protects the connection between the circuit board 20 and the conductive spring 40, but also helps to lock the assembly relationship between the elastic snap-fit ​​part 420 and the second fixing area 122, avoiding the weakening or disengagement of the assembly relationship due to accidental impact to the headphones, thereby improving the structural stability and product quality of the headphones.

[0030] Specifically, a boss 110 can be provided in the mounting cavity, and the spring piece fixing groove 120 is provided on the boss 110. The boss 110 is provided with an abutment surface 111, which is located close to the spring piece fixing groove 120. The abutment surface 111 is used to realize the circuit board 20 abutting against the inner wall of the housing 10 through the fixing end of the conductive spring piece 40 when the elastic snap-fit ​​part 420 and the second fixing area 122 are snap-fitted together.

[0031] In some embodiments, a clearance groove corresponding to the elastic free end 430 can be provided on the boss 110. The clearance groove and the abutment surface 111 are respectively located on both sides of the spring piece fixing groove 120. When the elastic free end 430 undergoes elastic deformation along the first direction, the clearance groove provides deformation space for the elastic free end 430. Preferably, the height of the elastic snap-fit ​​part 420 connected to the fixing end of the conductive spring piece 40 in the first direction is higher than the height of the elastic snap-fit ​​part 420 connected to the elastic free end 430, so as to avoid interference between the elastic free end 430 and the circuit board 20 when the elastic free end 430 undergoes elastic deformation in the first direction when it is located below the circuit board 20.

[0032] In some embodiments, the detachable connection between the elastic free end 430 and the connecting end 330 can be achieved through abutment, threaded connection, snap-fit ​​connection, pin connection, flange connection, or tenon connection. For example, the elastic free end 430 may have an abutment area, and the connecting end 330 may have an abutment joint. During assembly of the first fixing area 121, the fixing end of the conductive contact 30 is first connected to the fixing post 131 in the contact fixing groove 130, and then the abutment joint and the abutment area are abutted against each other, causing the elastic free end 430 and the elastic arm 320 to undergo elastic deformation, thereby achieving a stable electrical connection between the elastic free end 430 and the connecting end 330. In another example, the elastic free end 430 may include a semi-closed shaft hole 432, with the opening of the shaft hole 432 away from the elastic arm 320. The connecting end 330 may have a shaft 331 that mates with the shaft hole 432. By inserting the shaft 331 into the shaft hole 432, the connection between the elastic free end 430 and the connecting end 330 is achieved.

[0033] In some embodiments, to reduce the space constraints when establishing an assembly relationship between the elastic free end 430 and the connecting end 330, the projection of the shaft hole 432 along the first direction on the circuit board 20 can be located outside the circuit board 20. Based on this structure, when connecting the elastic free end 430 and the connecting end 330, the constraint effect of the circuit board 20 on the installation action is reduced. Furthermore, the shaft hole 432 can also be set to protrude from the circuit board 20 along the second direction, where the second direction and the first direction are opposite, allowing the elastic free end 430 and the connecting end 330 to have more installation space for assembly and connection, thereby improving assembly convenience.

[0034] In some embodiments, the elastic free end 430 can be configured as an L-shaped structure, with one end of the elastic free end 430 connected to the elastic snap-fit ​​part 420 and the shaft hole 432 provided at the other end of the elastic free end 430. Based on the above structure, the elastic free end 430 can undergo elastic deformation in both the length direction of the connecting end 330 and the first direction, thereby reducing the assembly restrictions between the elastic free end 430 and the connecting end 330.

[0035] In some embodiments, to improve the ease of connection and assembly of the flexible free end 430 and the connecting end 330, such as Figure 9As shown, the elastic free end 430 can be configured to include two parallel support arms 431. The support arms 431 are wound along their length to form a semi-closed shaft hole 432. An installation gap is provided between the two support arms 431. The installation gap includes a gradient section located at the opening of the shaft hole 432. The gradient section gradually decreases in size from the opening of the shaft hole 432 along the length of the support arm 431. Based on the gradient section structure design, the insertion angle of the shaft rod 331 into the shaft hole 432 can be increased during assembly, reducing insertion resistance and improving assembly convenience. Preferably, the arc corresponding to the winding stroke of the support arm 431 is 200°~300°, and more preferably, the arc corresponding to the winding stroke of the support arm 431 is 275°, to balance the insertion resistance of the shaft rod 331 into the shaft hole 432 and the structural stability of the shaft rod 331 after it is inserted into the shaft hole 432.

[0036] In some embodiments, the connecting end 330 and the shaft 331 form a T-shaped structure. The shaft 331 is located at the end of the connecting end 330 along its length direction, thereby increasing the control arm for inserting the shaft 331 into the shaft hole 432 and reducing the assembly difficulty of the elastic free end 430 and the connecting end 330. The thickness of the connecting end 330 matches the width of the installation gap. After the shaft 331 is inserted into the shaft hole 432, two support arms 431 limit and constrain the connecting end 330 in the axial direction of the shaft 331, preventing the shaft 331 from axially wobbling within the shaft hole 432, thus improving structural stability. The width direction of the connecting end 330 corresponds to the length direction of the installation gap. When the snap-fit ​​part 420 is inserted from the first fixing area 121 into the second fixing area 122, since the width direction of the connecting end 330 is greater than the thickness direction, the bending deformation resistance of the connecting end 330 in the first direction is enhanced. This makes the elastic deformation generated in this process mainly occur on the elastic free end 430, and the elastic arm 320 will share a small part of the elastic deformation, ensuring that the charging contact surface 321 can be stably placed on the housing 10 when the assembly relationship is locked. Preferably, the height difference between the charging contact surface 321 and the outer wall surface of the adjacent housing 10 is between -0.5mm and 0.5mm, so as to ensure that the charging contact surface 321 can stably contact the charging terminal in the external charging device such as the earphone box during use.

[0037] In some embodiments, to improve the connection stability between the elastic free end 430 and the connecting end 330, the diameter of the shaft hole 432 can be set to be smaller than the diameter of the shaft 331. After the shaft 331 is installed into the shaft hole 432, the shaft hole 432 applies a wrapping force to the shaft 331, which can increase the connection contact surface between the shaft hole 432 and the shaft 331, enhance the charging circuit, and also increase the resistance of the shaft 331 rotating along the axis of the shaft hole 432 within the shaft hole 432. This ensures that a stable electrical connection is maintained between the elastic free end 430 and the connecting end 330 when the conductive spring 40 and the conductive contact 30 are installed in place.

[0038] In some embodiments, the contact fixing groove 130 is provided with a guide post 132, and the guide post 132 is provided with a first guide surface, a second guide surface or a third guide surface. The first guide surface is correspondingly provided with the fixing post 131, and the first guide surface cooperates with the fixing post 131 to fix the fixing end of the conductive contact 30. The second guide surface is correspondingly provided with the elastic arm 320. When the elastic snap-fit ​​part 420 is snap-fitted with the first fixing area 121, there is a first preset gap between the second guide surface and the elastic arm 320. When the elastic snap-fit ​​part 420 is snap-fitted with the second fixing area 122, the second guide surface abuts against the elastic arm 320 to limit the elastic deformation of the elastic arm 320 and ensure that the charging contact surface 321 and the outer wall surface of the adjacent housing 10 are at the designed height difference. There is a second preset gap between the third guide surface and the inner wall of the contact fixing groove 130, and the connecting end 330 passes through the second preset gap.

[0039] This embodiment provides an electronic device, including the aforementioned headphones. Preferably, the electronic device further includes a headphone case for storing the headphones and for charging them. Specifically, the headphone case has a charging terminal inside, and when the headphones are stored in the headphone case, the charging terminal and the charging contact surface abut against each other to enable the headphone case to charge the headphones.

[0040] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0041] Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

[0042] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. An earphone, characterized in that, include: The housing has an installation cavity inside, and a spring clip fixing groove is provided inside the installation cavity. The spring clip fixing groove has a first fixing area and a second fixing area along a first direction, where the first direction is the depth direction of the spring clip fixing groove. The housing has a contact fixing groove, and a fixing post is provided inside the contact fixing groove. A conductive contact, wherein the fixed end of the conductive contact is connected to a fixed post, the conductive contact includes a connecting end and an elastic arm, the elastic arm is disposed between the fixed end and the connecting end of the conductive contact, and a charging contact surface is provided on the elastic arm; A conductive spring, the fixed end of which is used to connect to a circuit board, the conductive spring includes an elastic free end and an elastic snap-fit ​​part, the elastic snap-fit ​​part is disposed between the fixed end and the elastic free end of the conductive spring, the elastic free end is detachably connected to the connection end of the conductive contact, the elastic snap-fit ​​part is used to snap-fit ​​with a first fixed area to achieve pre-fixation between the housing and the circuit board, the elastic snap-fit ​​part is also used to snap-fit ​​with a second fixed area to achieve enhanced elastic deformation of the elastic free end and the elastic arm.

2. The earphone according to claim 1, characterized in that, When the elastic snap-fit ​​part is engaged with the first fixed area, the elastic free end, the connecting end and the elastic arm are located in the first plane, and the first direction is perpendicular to the first plane.

3. The earphone according to claim 1, characterized in that, When the elastic snap-fit ​​part engages with the second fixed area, the circuit board abuts against the inner wall of the housing through the fixed end of the conductive spring.

4. The earphone according to claim 3, characterized in that, The mounting cavity is provided with a boss, and the spring clip fixing groove is provided on the boss. The boss is provided with an abutment surface, which is located close to the spring clip fixing groove. The abutment surface is used to enable the circuit board to abut against the inner wall of the housing through the fixed end of the conductive contact when the elastic snap-fit ​​part and the second fixing area snap-fit ​​together.

5. The headphones according to any one of claims 1 to 4, characterized in that, The elastic free end includes a semi-closed shaft hole, the opening of which is away from the elastic arm, and the connecting end is provided with a shaft that mates with the shaft hole.

6. The earphone according to claim 5, characterized in that, The projection of the shaft hole along the first direction onto the circuit board is located outside the circuit board. And / or, the shaft hole protrudes from the circuit board along a second direction, the second direction being opposite to the first direction.

7. The earphone according to claim 5, characterized in that, The elastic free end includes two parallel support arms. The support arms are wound along the length direction to form a semi-closed shaft hole. An installation gap is provided between the two support arms. The installation gap includes a gradient section located at the opening of the shaft hole. The gradient section gradually decreases from the opening of the shaft hole along the length direction of the support arm.

8. The earphone according to claim 7, characterized in that, The connecting end and the shaft form a T-shaped structure. The shaft is located at the end of the connecting end along the length direction of the connecting end. The thickness of the connecting end matches the width of the installation gap, and the width direction of the connecting end corresponds to the length direction of the installation gap. And / or, the diameter of the shaft hole is smaller than the diameter of the shaft rod.

9. The headphones according to any one of claims 1 to 4, characterized in that, The contact fixing groove is provided with a guide post, and the guide post is provided with a first guide surface, a second guide surface or a third guide surface. The first guide surface is correspondingly provided with the fixing post, and the first guide surface cooperates with the fixing post to fix the fixed end of the conductive contact. The second guide surface is correspondingly provided with the elastic arm. When the elastic snap-fit ​​part is snap-fitted with the first fixing area, there is a first preset gap between the second guide surface and the elastic arm. There is a second preset gap between the third guide surface and the inner wall of the contact fixing groove, and the connecting end passes through the second preset gap.

10. An electronic device, characterized in that, Includes the headphones as described in any one of claims 1 to 9.

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