Assembly apparatus and method for a structural member and a spring applied to a headset suspension

Abstract

The application relates to the product assembly field, in particular to an assembling device for a structure part and a spring applied to earphone suspension. The assembling device comprises an assembling jig and an assembling executor. The assembling jig comprises an upper jig and a lower jig capable of relative movement, adjacent ends of the upper jig and the lower jig are respectively provided with an upper assembling groove and a lower assembling groove, the upper jig moves towards the lower jig, so that the upper assembling groove and the lower assembling groove are combined to form an assembling channel for axial movement of the spring; the assembling executor is connected with a driving element, the driving element moves in the assembling channel to push the spring; the lower jig is provided with a stop-through groove corresponding to a protruding part and parallel to the assembling channel, a stop element is arranged in cooperation with the driving element, the stop element and the driving element are driven to synchronously move by the assembling executor; the distance between the stop end of the stop element and the protruding part corresponds to the residual stroke of the driving element.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of product assembly, in particular to an assembly device and method of structural members and springs applied to a headset suspension. BACKGROUND

[0002] A headset is composed of two parts, which are two speaker units with a headband and a rotating connection at both ends of the headband.

[0003] In the prior art, the headband is generally made of a plastic plate with elasticity as the main body, wrapped with cloth or leather externally, and the headband and the speaker unit are often hinged in the form of a rotating shaft. Through the elastic deformation of the headband, the function of changing the distance between the two speaker units is realized, thereby adapting to the head shape and wearing of different wearers.

[0004] However, the single elastic deformation structure has a large elastic change interval, which results in an uncomfortable wearing experience. Some headsets choose to add a suspension module at the rotating shaft of the headband and the speaker unit. The suspension module is a suspension structure composed of at least two structural members connected by hinge and spring elasticity. Compared with the traditional single headband deformation, this multi-deformation structure helps to improve the comfort of the wearer.

[0005] However, the above technology at least has the following technical problems:

[0006] The compact structure of the rotating shaft of the headset results in a very small size of the suspension structure, and therefore the size of the spring in the suspension structure is smaller. The small-sized spring is difficult to position during assembly and is prone to fly off, which brings great difficulty to the assembly of the suspension structure. SUMMARY

[0007] The purpose of the present application is to provide an assembly device and method of structural members and springs applied to a headset suspension, to solve the problem of difficult assembly of small springs applied to a headset suspension in the prior art.

[0008] The technical solution of the present application is an assembly device of structural members and springs applied to a headset suspension. The structural member is formed with a protruding portion, a connecting through hole is opened above the protruding portion, and a connecting rod for spring sleeving is installed through the connecting through hole. The assembly device comprises:

[0009] The assembly jig comprises an upper jig and a lower jig capable of relative movement. Adjacent ends of the upper jig and the lower jig are respectively provided with an upper assembly groove and a lower assembly groove. The upper jig moves towards the lower jig, so that the upper assembly groove and the lower assembly groove are combined to form an assembly channel for the spring to move axially.

[0010] The assembly executor is connected with a driving element, and the driving element moves the spring in the assembly channel.

[0011] The lower jig is provided with a stop slot corresponding to the protrusion and parallel to the assembly channel, and a stop element is arranged in cooperation with the driving element, and the stop element and the driving element are driven by the assembly executor to move synchronously; the stop end of the stop element is spaced apart from the protrusion by a distance corresponding to the remaining stroke of the driving element.

[0012] Preferably, the wall surfaces adjacent to the upper assembly slot and the lower assembly slot are respectively configured as an upper jig limiting surface and a lower jig limiting surface, and the assembly channel is formed when the upper jig limiting surface and the lower jig limiting surface are in abutment.

[0013] The lower jig is provided with a thin-walled structure between the lower assembly slot and the stop slot, and the upper wall surface of the stop end of the stop element is configured as a support end; when the upper jig limiting surface impacts the lower jig limiting surface, the support end supports the thin-walled structure.

[0014] Preferably, the structure has a feeding channel connected to the assembly channel, and the structure is placed at one end of the feeding channel away from the assembly channel.

[0015] The connection between the feeding channel and the assembly channel is set as an assembly station; a feeding driver for driving the structure to move along the feeding channel is arranged in abutment with both ends of the structure, so that the structure is fixed at the assembly station.

[0016] Preferably, the upper jig is connected to a rotary lifting module, which can drive the upper jig to perform lifting action and swing around a vertical axis, so that a channel is formed above the lower assembly slot for the spring to be placed in the vertical direction.

[0017] Preferably, the driving element is configured as an elongated rod structure.

[0018] The stop element is configured as a plate structure, and the stop end is provided with a convex point adapted to the arc-shaped outer edge of the protrusion.

[0019] Preferably, the lower jig is fixed with a guide block at one end close to the assembly executor, and the guide block is provided with a through hole for the driving element and the stop element to pass through, and the inner wall of the through hole supports one end of the driving element and the stop element away from the assembly executor.

[0020] Preferably, the driving element is arranged in parallel as a pair, and the upper jig limiting surface and the lower jig limiting surface are respectively located between a pair of upper assembly slots and a pair of lower assembly slots.

[0021] Preferably, the method for assembling the structure and the spring applied to the earphone suspension comprises the following steps:

[0022] Step one, the rotating lifting module drives the upper jig to ascend and rotate in sequence, so that the upper assembly groove is separated from the lower assembly groove, and the lower assembly groove is exposed; at the same time, the structural part is put into the feeding channel away from the lower assembly groove;

[0023] Step two, the spring is put into the lower assembly groove, and then the rotating lifting module is reset to form an assembly channel; at the same time, the feeding driver is driven to push the structural part along the feeding channel into the assembly station;

[0024] Step three, the assembly executor is started, so that the driving element and the stop element move along the assembly channel and the stop channel respectively, and the spring is pushed into the connecting rod of the structural part until the stop element abuts against the protruding part.

[0025] Compared with the prior art, the advantages of the present application are:

[0026] (1) The present application limits the displacement of the spring in the assembly process to axial movement in the axial attitude through the circumferentially closed assembly channel formed by the upper jig and the lower jig, thereby solving the problem of the micro spring in the assembly process that the posture deviates and the assembly executor continuously applies driving force at the same time, improving the assembly success rate.

[0027] (2) The present application constructs a support end on the stop element and extends the support end below the thin-walled area for support. The stop element not only limits the travel of the driving element, but also maintains the stability of the lower jig structure, thereby ensuring the dimensional accuracy and stability of the assembly channel when the upper jig and the lower jig are combined. BRIEF DESCRIPTION OF DRAWINGS

[0028] The present application will be further described below in conjunction with the drawings and examples:

[0029] Figure 1 The structural part of the present application is shown in the schematic diagram;

[0030] Figure 2 The spring and structural part assembly of the present application is shown in the schematic diagram;

[0031] Figure 3 The first perspective view of the assembly equipment of the present application is shown in the structural diagram;

[0032] Figure 4 The second perspective view of the assembly equipment of the present application is shown in the structural diagram;

[0033] Figure 5 The third perspective view of the assembly equipment of the present application is shown in the structural diagram;

[0034] Figure 6 The assembly channel forming method of the present application is shown in the schematic diagram;

[0035] Figure 7 Figure 1 is a structural diagram of the lower jig according to the present application;

[0036] Figure 8 Figure 2 is a structural diagram of the stop element according to the present application;

[0037] Wherein: 1, upper jig, 11, upper assembly groove, 12, upper jig limiting surface, 13, rotary lifting module, 2, lower jig, 21, lower assembly groove, 22, lower jig limiting surface, 23, stop through groove, 24, thin-walled structure, 3, assembly executor, 31, driving element, 32, stop element, 321, stop end, 322, support end, 323, protruding point, 41, feeding channel, 42, feeding driver, 5, guide block, 110, structural member, 111, protruding part, 112, connecting through hole, 120, spring, 130, connecting rod, 200, assembly channel. DETAILED DESCRIPTION

[0038] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0039] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0040] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0041] The present invention will be further described in detail below with reference to specific embodiments:

[0042] A headphone suspension is a hinge structure used at the connection between the headband and speaker unit of some headphone models, and it includes at least the following: Figure 1 and Figure 2 The structural component 110 and spring 120 are shown. One end of the first structural component is hinged to one end of the second structural component, and the other ends or middle of the first and second structural components are elastically connected by the spring 120. This allows the multiple structural components 110 to swing together by compressing the spring 120. Compared with using a spring sheet structure to clamp a pair of speaker units to the head, this suspension structure formed by the compression spring 120 provides better wearing comfort.

[0043] Specifically, such as Figure 1 As shown, a protrusion 111 is formed on the structural member 110, and a connecting through hole 112 is provided above the protrusion 111. A connecting rod 130 is installed through the connecting through hole 112 along the protruding direction of the protrusion 111, and in conjunction with... Figure 2 As shown, spring 120 is sleeved on connecting rod 130. The protruding direction is the direction in which the protrusion 111 has the longest dimensional parameter in the spatial coordinate system composed of the X-axis, Y-axis, and Z-axis.

[0044] like Figure 3 - Figure 5 As shown, this embodiment provides an assembly device for a structural component 110 and a spring 120 applied to an earphone suspension, including an assembly jig and an assembly actuator 3.

[0045] Combination Figure 6 and Figure 7 As shown, the assembly fixture comprises two parts: an upper fixture 1 and a lower fixture 2, which are capable of relative movement. The upper fixture 1 has an upper assembly groove 11 on its end face near the lower fixture 2, and the lower fixture 2 has a lower assembly groove 21 on its end face near the upper fixture 1. When the upper fixture 1 and lower fixture 2 are separated, the spring 120 to be assembled can be pre-placed into the lower assembly groove 21. When the upper fixture 1 and lower fixture 2 are in contact, the upper assembly groove 11 and lower assembly groove 21 combine to form a circumferentially closed assembly channel 200, allowing the spring 120 to move axially in a horizontal position within the assembly channel 200. This solves the problem of small springs flying off during assembly due to continuous driving force applied by the assembly actuator 3 while the spring's posture deflects, thus improving the assembly success rate.

[0046] like Figure 2 and 3As shown, the assembly executor 3 is connected with a driving element 31, which can abut against one end of the spring 120 in the assembly channel 200 and push the spring 120 forward along the assembly channel 200 under the driving of the assembly executor 3. During the process of pushing the spring 120 forward by the driving element 31, the circumferentially closed assembly channel 200 will limit the deformation of the spring 120 other than the axial direction.

[0047] The connecting rod 130 for sleeving the spring 120 is directly inserted into the connecting through hole 112 above the protruding part 111 of the structural member 110. In order to avoid the driving element 31 from continuing to advance after the spring 120 is assembled on the connecting rod 130, causing the connecting rod 130 to loosen and slide in the connecting through hole 112. As shown, Figure 7 As shown, the lower jig 2 is provided with a stop through slot 23 corresponding to the protruding part 111 and parallel to the assembly channel 200, and the stop through slot 23 is combined with Figure 3 、 Figure 4 and Figure 8 As shown, the stop element 32 is arranged in cooperation with the driving element 31, and the stop element 32 and the driving element 31 are driven and synchronously actuated by the assembly executor 3. When the driving element 31 enters the assembly channel 200, the stop element 32 synchronously enters the stop through slot 23 below the assembly channel 200. The driving element 31 and the stop element 32 synchronously move towards the structural member 110, and when the stop end 321 on the stop element 32 penetrates the stop through slot 23 and abuts against the protruding part 111 of the structural member 110, the stop element 32 stops moving by abutting against the protruding part 111, and the driving element 31 also stops moving synchronously, thereby avoiding applying excessive force to the connecting rod 130.

[0048] As shown in the combination of Figure 4 The abutting process of the upper jig 1 and the lower jig 2, i.e. the forming process of the assembly channel 200, is also provided with a limit. And because the diameter of the assembled spring 120 is very small, the precision of the upper assembly groove 11 and the lower assembly groove 21 in the forming process of the assembly channel 200 is required to be high, so in the preferred embodiment of the present application, the limit structure needs to be as close to the upper assembly groove 11 and the lower assembly groove 21 as possible.

[0049] Specifically, a horizontal wall surface near the upper assembly groove 11 in the upper jig 1 is configured as an upper jig limit surface 12, and a horizontal wall surface near the lower assembly groove 21 in the lower jig 2 is configured as a lower jig limit surface 22, and the assembly channel 200 is formed when the upper jig limit surface 12 abuts against the lower jig limit surface 22.

[0050] When the upper jig limit surface 12 and the lower jig limit surface 22 abut against each other, a large force will be generated. For a workpiece with a relatively thick wall thickness, this force will not bring negative effects such as deformation, but the present application has the following problems:

[0051] The structure 110 applied to the rotating shaft of the headphone is compact in itself, so the minimum distance between the protruding part 111 and the connecting rod 130 in the structure 110 in the vertical direction is small. When the spring 120 is sleeved on the connecting rod 130, the minimum distance between the protruding part 111 and the spring 120 in the vertical direction will be smaller. Because the spring 120 and the connecting rod 130 are in the lower assembly groove 21 on the opposite upper layer during assembly, and the protruding part 111 is in the stop channel on the opposite lower layer, the distance between the lower jig 2 and the stop channel 23 in the lower assembly groove 21 is smaller than the minimum distance between the protruding part 111 and the spring 120 in the vertical direction, thereby forming a thin-walled structure 24. The impact force generated when the upper jig limiting surface 12 and the lower jig limiting surface 22 abut may cause the thin-walled area to deform.

[0052] To solve this problem, in the present embodiment, the top surface of the stop element 32 perpendicular to the stop end 321 is configured as a horizontal surface and is set as a support end 322, the two sides of the support end 322 extend directly below the thin-walled structure 24, and when the upper jig 1 and the lower jig 2 abut, the thin-walled structure 24 is supported by the support end 322 on the stop element 32, thereby reducing the impact deformation of the thin-walled structure 24 due to the pressure of the upper jig 1.

[0053] In the preferred embodiment of the present application, as shown in Figure 8 the driving element 31 is provided in an elongated rod structure, and the stop element 32 is configured in a plate structure, and the stop end 321 is provided with a convex point 323 adapted to the arc-shaped outer edge of the protruding part 111. Moreover, the driving element 31 is provided in a pair in parallel, and the stop element 32 is centrally provided below the pair of driving elements 31. Correspondingly, the upper assembly groove 11 and the lower assembly groove 21 are provided in a pair corresponding to the driving element 31, and the upper jig limiting surface 12 and the lower jig limiting surface 22 are respectively provided between the pair of upper assembly grooves 11 and the pair of lower assembly grooves 21.

[0054] In order to reduce the degree of sagging of the elongated driving element 31 and the stop element 32 away from the end of the assembly executor 3 under the gravity, in the preferred embodiment of the present application, as shown in Figure 3 the guiding block 5 is fixed to one end of the lower jig 2 close to the assembly executor 3, and three through holes are provided on the guiding block 5, two of which are provided as round holes corresponding to the driving element 31 for the driving element 31 to penetrate, and the other is provided as a square hole corresponding to the stop element 32 and penetrating the stop element 32. Moreover, the size of the through hole corresponds to the driving element 31 and the stop element 32, so that the inner wall of the through hole can provide support to the end of the driving element 31 and the stop element 32 away from the assembly executor 3.

[0055] The stop element 32 not only limits the stroke of the drive element 31, but also maintains the structural stability of the lower fixture 2, thereby ensuring the dimensional accuracy and stability of the assembly channel 200 when the upper fixture 1 and the lower fixture 2 are closed.

[0056] Other aspects concern the feeding of structural component 110 and spring 120.

[0057] Among them, such as Figure 4 As shown, the loading operation of structural component 110 is achieved through loading channel 41. Specifically, loading channel 41 is configured as a chute, allowing structural component 110 to slide along the chute under external force. Loading channel 41 is connected to assembly channel 200. Structural component 110 is placed at the end of loading channel 41 away from assembly channel 200, and a loading actuator 42 is provided at this end. The loading actuator 42 includes a loading execution end extending into loading channel 41 and a loading cylinder that drives the execution end. The end of the loading execution end away from the loading cylinder is contoured to structural component 110, enabling it to push structural component 110 along loading channel 41 under the drive of the loading cylinder.

[0058] Furthermore, the connection point between the loading channel 41 and the assembly channel 200 is designated as the assembly station, where the assembly of the spring 120 and the structural component 110 will take place. The loading driver 42 drives one end of the structural component 110 to move along the loading channel 41 until the other end of the structural component 110 abuts against the end of the upper fixture 1, thereby fixing the structural component 110 on the assembly station through the loading driver 42 and the upper fixture 1.

[0059] The loading of spring 120 is achieved as follows: An upper fixture 1 is connected to a rotary lifting module 13, which drives the upper fixture 1 to separate from or abut against the lower fixture 2. In this embodiment, the rotary lifting module 13 is formed by combining a lifting module consisting of a motor and a lead screw mechanism with a rotary motor. After the rotary lifting module 13 drives the upper fixture 1 to rise, it can swing around a vertical axis, exposing the lower assembly slot 21. This allows the spring 120 to be directly flipped into the lower assembly slot 21 vertically by the corresponding spring 120 feeding device.

[0060] The work includes the following steps:

[0061] Step 1: The rotating lifting module 13 drives the upper fixture 1 to rise and rotate sequentially, causing the upper assembly slot 11 to separate from the lower assembly slot 21 and exposing the lower assembly slot 21. At the same time, the structural component 110 is placed into the end of the loading channel 41 away from the lower assembly slot 21.

[0062] Step two, put the spring 120 into the lower assembly slot 21, then rotate the lifting module 13 to reset, forming an assembly channel 200; at the same time, drive the feeder drive 42 to push the structural member 110 along the feeding channel 41 into the assembly station.

[0063] Step three, start the assembly executor 3, so that the driving element 31 and the stop element 32 move along the assembly channel 200 and the stop slot 23 respectively, push the spring 120 onto the connecting rod 130 of the structural member 110 until the stop element 32 abuts against the protrusion 111.

[0064] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or basic characteristics of the present application, therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application.

Claims

1. An assembly device for a structure (110) of an earphone suspension and a spring (120), the structure (110) is formed with a protruding portion (111), a connecting through hole (112) is opened higher than the protruding portion (111), a connecting rod (130) for sleeving the spring (120) is installed through the connecting through hole (112), characterized in that ； The assembly device comprises: an assembly jig comprising an upper jig (1) and a lower jig (2) capable of relative movement, adjacent ends of the upper jig (1) and the lower jig (2) are respectively provided with an upper assembly slot (11) and a lower assembly slot (21), the upper jig (1) is operated towards the lower jig (2), so that the upper assembly slot (11) and the lower assembly slot (21) are combined to form an assembly channel (200) for axial movement of a spring (120); an assembly executor (3) connected with a driving element (31), the driving element (31) pushes the spring (120) to move in the assembly channel (200); the lower jig (2) is provided with a stop-through slot (23) corresponding to the protruding part (111) and parallel to the assembly channel (200), a stop element (32) is arranged in cooperation with the driving element (31), the stop element (32) and the driving element (31) are driven by the assembly executor (3) to move synchronously, a stop end (321) of the stop element (32) is spaced apart from the protruding part (111) by a distance corresponding to a remaining stroke of the driving element (31); the walls adjacent to the upper assembly slot (11) and the lower assembly slot (21) are respectively configured as an upper jig limiting surface (12) and a lower jig limiting surface (22), and the assembly channel (200) is formed in an abutting state of the upper jig limiting surface (12) and the lower jig limiting surface (22); the lower jig (2) is formed with a thin-walled structure (24) between the lower assembly slot (21) and the stop-through slot (23), and an upper wall surface of the stop end (321) is configured as a support end (322) perpendicular to the stop end (321); when the upper jig limiting surface (12) generates an impact on the lower jig limiting surface (22), the support end (322) supports the thin-walled structure (24).

2. The apparatus for assembling a structural member (110) and a spring (120) applied to an earphone suspension according to claim 1, characterized in that, an upper feeding channel (41) connected with the assembly channel (200), the structural member (110) is placed at one end of the upper feeding channel (41) away from the assembly channel (200); the connection between the upper feeding channel (41) and the assembly channel (200) is set as an assembly station, and an upper feeding driver (42) driving the structural member (110) to move along the upper feeding channel (41) is arranged at two ends of the structural member (110) respectively abutting against the upper jig (1), so that the structural member (110) is fixed at the assembly station.

3. The apparatus for assembling a structural member (110) and a spring (120) applied to an earphone suspension according to claim 2, characterized in that, the upper jig (1) is connected with a rotary lifting module (13), the rotary lifting module (13) can drive the upper jig (1) to perform lifting action and swing around a vertical axis, so that a channel for placing the spring (120) in a vertical direction is formed above the lower assembly slot (21).

4. The apparatus for assembling a structural member (110) and a spring (120) applied to an earphone suspension according to claim 3, characterized in that, the driving element (31) is configured as an elongated rod structure; the stop element (32) is configured as a plate structure, and a convex point (323) is arranged on the stop end (321) to adapt to the arc outer edge of the protruding part (111).

5. The apparatus for assembling a structural member (110) and a spring (120) applied to an earphone suspension according to claim 4, characterized in that, The lower jig (2) is fixed with a guide block (5) near one end of the assembly executor (3), the guide block (5) is provided with a through hole for the driving element (31) and the stop element (32) to penetrate, and the inner wall of the through hole supports the end of the driving element (31) and the stop element (32) away from the assembly executor (3).

6. The apparatus for assembling a structural member (110) and a spring (120) applied to an earphone suspension according to claim 5, characterized in that, The driving elements (31) are arranged in parallel as a pair, and the upper jig limiting surface (12) and the lower jig limiting surface (22) are located between a pair of upper assembly grooves (11) and a pair of lower assembly grooves (21) respectively.

7. A method of assembling a structural member (110) and a spring (120) for a headphone suspension, using the assembly apparatus according to claim 6, characterized in that, The method comprises the following steps: Step one, the rotating lifting module (13) drives the upper jig (1) to ascend and rotate in sequence, so that the upper assembly groove (11) is separated from the lower assembly groove (21), and the lower assembly groove (21) is exposed; at the same time, the structural part (110) is put into the upper feeding channel (41) away from the lower assembly groove (21); Step two, the spring (120) is put into the lower assembly groove (21), and then the rotating lifting module (13) is reset to form an assembly channel (200); at the same time, the upper feeding driver (42) is driven to push the structural part (110) along the upper feeding channel (41) into the assembly station; Step three, the assembly executor (3) is started, so that the driving element (31) and the stop element (32) move along the assembly channel (200) and the stop groove (23) respectively, and the spring (120) is pushed onto the connecting rod (130) of the structural part (110) until the stop element (32) abuts against the protruding part (111).

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