Electronic device and vibration generating device

Abstract

To provide an electronic device with a housing to which laser welding is applied, which can reduce area of an external surface of a part made of resin for transmitting laser.SOLUTION: An electronic device ED comprises: a housing HS comprising a first case member 1 and a second case member 2; and an internal member IM fixed to the inside of the housing HS. Both of the first case member 1 and the second case member 2 are formed by containing resin absorbing laser. The internal member IM is formed by containing resin transmitting laser and comprises: a body part 3M arranged inside the housing HS; and an extension part 3E extending from the body part 3M toward the outside of the housing HS to be exposed to the outside of the housing HS. The first case member 1 and the second case member 2 are fixed to each other by welding a part of the first case member 1 to the inside of a part of the extension part 3E by laser and welding a part the second case member 2 to the inside of the other part of the extension part 3E by laser.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to an electronic device and a vibration generating device. [Background technology]

[0002] Conventionally, there has been known an electronic device having a circuit case that houses a circuit board in a housing composed of a body made of resin that absorbs laser light of a predetermined wavelength and a lid made of resin that transmits the laser (see Patent Document 1). In this electronic device, the inside of the lid and the body are welded together by a laser irradiated from the outside of the lid. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2006-165351 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the configuration disclosed in Patent Document 1, the area of ​​the outer surface of the lid, which is made of a resin that transmits laser light, becomes large, which may be undesirable from a design perspective.

[0005] Therefore, it is desirable to provide an electronic device having a housing to which laser welding is applied, which can reduce the area of ​​the outer surface of the portion formed of a resin that transmits laser light. [Means for solving the problem]

[0006] An electronic device according to an embodiment of the present disclosure comprises a housing including a first case member and a second case member, and an internal member housed within and fixed to the housing, wherein the first case member and the second case member are both formed of a resin that absorbs laser, and the internal member is formed of a resin that transmits the laser, and has a main body portion disposed within the housing, and an extension portion that extends from the main body portion toward the outside of the housing and is exposed to the outside of the housing, and the first case member and the second case member are fixed to each other by welding a portion of the first case member to the inside of a portion of the extension portion with the laser, and welding a portion of the second case member to the inside of another portion of the extension portion with the laser. [Effects of the Invention]

[0007] In the electronic device described above, the area of ​​the outer surface of the portion formed of resin that transmits laser light can be reduced. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a diagram illustrating an example of the configuration of a vibration generating device. [Figure 2] FIG. [Figure 3] FIG. 2 is an exploded perspective view of a movable member and a fixed member. [Figure 4] FIG. 2 is a diagram of the housing and internal components as viewed from above and below. [Figure 5] FIG. 2 is a cross-sectional view of the vibration generator. [Figure 6] 4 is a cross-sectional view of a fitting hole and a fitting protrusion. FIG. [Figure 7] FIG. 2 is a left side view of the vibration generator. [Figure 8] FIG. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, with reference to the drawings, a description will be given of a vibration generator 101, which is an example of an electronic device ED according to an embodiment of the present disclosure. FIG. 1 is a diagram showing an example of the configuration of the vibration generator 101. Specifically, the upper diagram in FIG. 1 is a perspective view of the vibration generator 101, and the lower diagram in FIG. 1 is an exploded perspective view of the vibration generator 101. FIG. 2 is an exploded perspective view of a portion of the vibration generator 101 that is arranged inside the housing HS. FIG. 3 is a more detailed exploded perspective view of the portion of the vibration generator 101 that is arranged inside the housing HS.

[0010] 1, 2, and 3, X1 represents one direction of the X axis constituting a three-dimensional Cartesian coordinate system, and X2 represents the other direction of the X axis. Furthermore, Y1 represents one direction of the Y axis constituting the three-dimensional Cartesian coordinate system, and Y2 represents the other direction. Similarly, Z1 represents one direction of the Z axis constituting the three-dimensional Cartesian coordinate system, and Z2 represents the other direction of the Z axis. In this embodiment, the X1 side of the vibration generator 101 corresponds to the front side (front face) of the vibration generator 101, and the X2 side of the vibration generator 101 corresponds to the rear side (rear face) of the vibration generator 101. Furthermore, the Y1 side of the vibration generator 101 corresponds to the left side of the vibration generator 101, and the Y2 side of the vibration generator 101 corresponds to the right side of the vibration generator 101. Furthermore, the Z1 side of the vibration generator 101 corresponds to the top side of the vibration generator 101, and the Z2 side of the vibration generator 101 corresponds to the bottom side of the vibration generator 101. The same applies to the other figures.

[0011] The vibration device VE has a control unit CTR and a vibration generator 101. The vibration generator 101 is configured to be attached to the inside of, for example, a game controller or the like, and to apply vibrations to the game controller. Specifically, the vibration generator 101 has a fixed member FB including a housing HS as a cylindrical case, a movable member MB housed in the housing HS, and an elastic support member 9 disposed between the movable member MB and the fixed member FB and elastically supporting the movable member MB. The fixed member FB includes the housing HS, a coil bobbin 3 as an internal member IM, an insulating substrate 4 attached to the coil bobbin 3, and a coil 5 wound around the coil bobbin 3.

[0012] The control unit CTR is connected to an input terminal IT provided on an insulating substrate 4 that is fixed to a fixed-side member FB (the housing HS and the internal member IM) with an adhesive. In this embodiment, the insulating substrate 4 is a flexible printed circuit board. However, the insulating substrate 4 may also be a rigid-flexible board or the like. Note that the dashed line connecting the control unit CTR and the input terminal IT provided on the insulating substrate 4 in the upper diagram of FIG. 1 schematically indicates that the control unit CTR and the input terminal IT are electrically connected.

[0013] As shown in the upper diagram of FIG. 1, the housing HS is a case having a substantially cylindrical outer shape. The housing HS may have other outer shapes, such as a substantially rectangular cylindrical outer shape. In this embodiment, the housing HS is composed of a first case member 1 and a second case member 2. The first case member 1 and the second case member 2 are formed containing a resin that absorbs laser light having a predetermined wavelength, such as a light-absorbing resin. In the illustrated example, the first case member 1 and the second case member 2 are formed containing polybutylene terephthalate (PBT) resin and are configured to be black. The first case member 1 and the second case member 2 may be formed containing other materials and may be configured to be other colors.

[0014] Specifically, the first case member 1 is formed to constitute the upper part of the housing HS. In the illustrated example, the first case member 1 has a cylindrical portion 1A and a top plate portion 1B, and is formed to have an opening 1K at the lower end of the cylindrical portion 1A.

[0015] The second case member 2 is formed to constitute the lower part of the housing HS. In the illustrated example, the second case member 2 has a cylindrical portion 2A and a bottom plate portion 2B, and is formed to have an opening 2K at the upper end of the cylindrical portion 2A.

[0016] In the illustrated example, the first case member 1 and the second case member 2 are formed to have the same shape. That is, the first case member 1 and the second case member 2 are the same part.

[0017] The internal member IM is configured to be housed and fixed inside the housing HS. Specifically, the internal member IM is configured to be sandwiched between the first case member 1 and the second case member 2. The internal member IM is formed containing a resin that transmits a laser having a predetermined wavelength, such as an optically transparent resin. The laser having the predetermined wavelength is a laser that is absorbed by the resin contained in each of the first case member 1 and the second case member 2. In the illustrated example, the internal member IM is formed containing polybutylene terephthalate (PBT) resin and is configured to be white. Note that the internal member IM may be transparent or may be configured to be other colors. The internal member IM is typically formed containing the same type of resin as each of the first case member 1 and the second case member 2, but may be formed containing a different type of resin from each of the first case member 1 and the second case member 2 as long as it is laser weldable.

[0018] The coil bobbin 3 is an example of an internal member IM, and includes a main body portion 3M disposed inside the housing HS, and an extension portion 3E extending from the main body portion 3M toward the outside of the housing HS and exposed to the outside of the housing HS. For clarity, a dot pattern is applied to the extension portion 3E in Fig. 3. Specifically, the main body portion 3M includes a lower main body portion 3MD provided below the extension portion 3E, and an upper main body portion 3MU provided above the extension portion 3E.

[0019] The first case member 1 and the second case member 2 are fixed to each other by laser welding a portion of the first case member 1 to the inside of a portion of the extending portion 3E and laser welding a portion of the second case member 2 to the inside of another portion of the extending portion 3E. In other words, the first case member 1 and the second case member 2 are joined via the coil bobbin 3 as the internal member IM.

[0020] The coil 5 is an example of a fixed magnetic field generating member, and is configured to be able to generate a magnetic field while being fixed to the coil bobbin 3. In this embodiment, the coil 5 is a wound coil formed by winding a conductive wire whose surface is coated with an insulating material, and is fixed to the coil bobbin 3 with an adhesive. For clarity, detailed illustrations of the wound state of the conductive wire are omitted in Figures 1, 2, and 3. This also applies to other figures that illustrate the coil 5.

[0021] 3, the coil 5 includes a lower coil 5D fixed to the lower main body portion 3MD of the coil bobbin 3 and an upper coil 5U fixed to the upper main body portion 3MU of the coil bobbin 3. Specifically, the upper coil 5U and the lower coil 5D are connected in series and arranged so that their winding directions are opposite to each other when viewed from above. Furthermore, as shown in FIG. 2, the coil 5 is arranged so that one end of the wire constituting the coil 5 is connected to a first conductor pad PD1 formed on the insulating substrate 4 and the other end of the wire constituting the coil 5 is connected to a second conductor pad PD2 formed on the insulating substrate 4.

[0022] The control unit CTR is configured to be able to control the movement of the movable member MB. In this embodiment, the control unit CTR is a device including an electronic circuit, a nonvolatile memory device, etc., and is configured to be able to control at least the direction of the current flowing through the coil 5. The control unit CTR may be configured to control the direction and magnitude of the current flowing through the coil 5 in response to a control command from an external device such as a computer, or may be configured to control the direction and magnitude of the current flowing through the coil 5 without receiving a control command from an external device. In the illustrated example, the control unit CTR is configured to be able to supply an alternating current to the coil 5. Note that in this embodiment, the control unit CTR is installed outside the housing HS, but it may also be installed inside the housing HS.

[0023] The movable-side member MB is configured to be able to vibrate the housing HS. In this embodiment, the movable-side member MB is configured to be able to vibrate the housing HS by reciprocating (vibrating) while being attached inside the housing HS via an elastic support member 9.

[0024] Specifically, the movable-side member MB includes a movable magnet body MT, joining members 8, and fastening members 10, and is configured to be elastically supported by elastic support members 9. More specifically, the movable-side member MB has a predetermined natural frequency and is configured to be able to reciprocate (vibrate) relative to the housing HS along a vibration axis VA that extends in a predetermined direction (Z-axis direction).

[0025] The movable magnet body MT is configured to generate a magnetic field while being capable of reciprocating (vibrating) relative to the housing HS. In this embodiment, the movable magnet body MT includes a magnet 6 and a yoke 7. In the illustrated example, the magnet 6 is a permanent magnet that is bipolarly magnetized in the Z-axis direction. For clarity, in FIG. 2, a cross pattern is applied to the north pole of the magnet 6, and a dot pattern is applied to the south pole of the magnet 6. This is also true for other figures illustrating the polarity of the magnet 6.

[0026] The yoke 7 is configured to be able to control the path of the magnetic field lines of the magnetic field generated by the magnet 6. In this embodiment, the yoke 7 includes a lower yoke 7D arranged below the magnet 6 and an upper yoke 7U arranged above the magnet 6. In the illustrated example, the lower yoke 7D is attached to the lower surface of the magnet 6, and the upper yoke 7U is attached to the upper surface of the magnet 6. The magnet 6 and the yoke 7 may be fixed to each other with an adhesive. In the illustrated example, the lower yoke 7D and the upper yoke 7U are formed to have the same shape. In other words, the lower yoke 7D and the upper yoke 7U are the same part.

[0027] The driving means DM is an example of a vibration force generator and is configured to vibrate the movable member MB relative to the fixed member FB along the vibration axis VA. In this embodiment, the driving means DM is an electromagnetic driving mechanism and includes a coil 5 (fixed magnetic field generating member) and a movable magnet body MT (movable magnetic field generating member). Specifically, the driving means DM is configured to use electromagnetic force corresponding to the direction and magnitude of current supplied to the coil 5 under the control of the control unit CTR to vibrate the movable member MB (movable magnet body MT), which is elastically supported by the elastic support member 9, along the vibration axis VA.

[0028] The joining member 8 is a member for fixing the movable magnet body MT to the elastic support member 9. In this embodiment, the joining member 8 is a member cast from aluminum, zinc, or the like, and includes a lower joining member 8D fixed to the lower surface of the lower yoke 7D and an upper joining member 8U fixed to the upper surface of the upper yoke 7U. In the illustrated example, the lower joining member 8D is fixed to the lower surface of the lower yoke 7D with an adhesive, and the upper joining member 8U is fixed to the upper surface of the upper yoke 7U with an adhesive. In addition, in the illustrated example, the lower joining member 8D and the upper joining member 8U are formed to have the same shape. In other words, the lower joining member 8D and the upper joining member 8U are the same part.

[0029] The elastic support member 9 is disposed between the fixed member FB and the movable member MB and is configured to elastically support the movable member MB so that it can vibrate relative to the fixed member FB. In this embodiment, the elastic support member 9 is a leaf spring formed of a metal plate, and as shown in Fig. 2, includes an outer fixed portion 9E fixed to the fixed member FB (inner member IM), an inner fixed portion 9I fixed to the movable member MB (joint member 8), and an elastic arm portion 9G elastically connecting the outer fixed portion 9E and the inner fixed portion 9I. Specifically, the elastic support member 9 is fixed to the inner member IM by adhesive or heat caulking, with a protrusion 3P provided on the inner member IM inserted into a through hole 9H and a notch 9C formed in the outer fixed portion 9E.

[0030] In the illustrated example, the elastic support member 9 includes a lower elastic support member 9D arranged between the lower end of the coil bobbin 3 and the lower joining member 8D, and an upper elastic support member 9U arranged between the upper end of the coil bobbin 3 and the upper joining member 8U. The lower elastic support member 9D includes a lower outer fixed portion 9ED, a lower inner fixed portion 9ID, and a lower elastic arm portion 9GD, and the upper elastic support member 9U includes an upper outer fixed portion 9EU, an upper inner fixed portion 9IU, and an upper elastic arm portion 9GU.

[0031] The lower elastic support member 9D is fixed to the lower end of the coil bobbin 3 by adhesive or heat crimping with a lower through-hole 9HD formed in the lower outer fixed portion 9ED, a right lower protrusion 3PDR provided at the lower end of the coil bobbin 3 inserted, and a left lower protrusion 3PDL provided at the lower end of the coil bobbin 3 inserted into a lower cutout 9CD formed in the lower outer fixed portion 9ED. Similarly, the upper elastic support member 9U is fixed to the upper end of the coil bobbin 3 by adhesive or heat crimping with an upper through-hole 9HU formed in the upper outer fixed portion 9EU, a left upper protrusion 3PUL provided at the upper end of the coil bobbin 3 inserted into an upper through-hole 9HU formed in the upper outer fixed portion 9EU, and a right upper protrusion 3PUR provided at the upper end of the coil bobbin 3 inserted into an upper cutout 9CU formed in the upper outer fixed portion 9EU. In the illustrated example, the lower elastic support member 9D and the upper elastic support member 9U are formed to have the same shape. That is, the lower elastic support member 9D and the upper elastic support member 9U are the same part.

[0032] The fastening member 10 is a member for fixing the movable magnet body MT to the elastic support member 9. In this embodiment, the fastening member 10 is a male screw for fastening the inner fixing portion 9I of the elastic support member 9 to the joining member 8, and is inserted into a through hole 9T formed in the inner fixing portion 9I and fastened to a female threaded hole formed in the joining member 8. Specifically, the fastening member 10 includes a lower fastening member 10D that fastens the lower inner fixing portion 9ID of the lower elastic support member 9D to the lower joining member 8D, and an upper fastening member 10U that fastens the upper inner fixing portion 9IU of the upper elastic support member 9U to the upper joining member 8U. The lower fastening member 10D is inserted into a lower through hole 9TD formed in the lower inner fixing portion 9ID of the lower elastic support member 9D and fastened to a female threaded hole formed in the lower joining member 8D. The upper fastening member 10U is inserted into an upper through-hole 9TU formed in the upper inner fixing portion 9IU of the upper elastic support member 9U and fastened to a female screw hole formed in the upper joining member 8U. In the illustrated example, the lower fastening member 10D and the upper fastening member 10U are formed to have the same shape. That is, the lower fastening member 10D and the upper fastening member 10U are the same part.

[0033] Next, the joining between the housing HS and the internal member IM will be described with reference to FIGS. 4 and 5. FIG. 4 is a diagram of the housing HS and the internal member IM as viewed from above. Specifically, the three diagrams on the left side of FIG. 4 are top views of the second case member 2 constituting the housing HS and the coil bobbin 3, which is an example of the internal member IM. More specifically, the upper left diagram of FIG. 4 is a top view of the second case member 2, the center left diagram of FIG. 4 is a top view of the coil bobbin 3, and the lower left diagram of FIG. 4 is a top view of the coil bobbin 3 fixed to the second case member 2. Furthermore, the three diagrams on the right side of FIG. 4 are bottom views of the first case member 1 constituting the housing HS and the coil bobbin 3, which is an example of the internal member IM. More specifically, the upper right diagram of FIG. 4 is a bottom view of the first case member 1, the center right diagram of FIG. 4 is a bottom view of the coil bobbin 3, and the lower right diagram of FIG. 4 is a bottom view of the coil bobbin 3 fixed to the first case member 1. FIG. 5 is a cross-sectional view of the vibration generator 101. Specifically, FIG. 5 is a cross-sectional view of the electromagnetic exciter 101 taken on an imaginary plane parallel to the YZ plane including the dashed dotted line L1 in the upper diagram of FIG. 1, as viewed from the X1 side.

[0034] 4, the first case member 1 has a fitting protrusion 1P and a convex portion 1T that protrude downward from the lower end of the cylindrical portion 1A. In the illustrated example, the fitting protrusion 1P includes a left fitting protrusion 1PL and a right fitting protrusion 1PR.

[0035] 4, the second case member 2 has a fitting protrusion 2P and a convex portion 2T that protrude upward from the upper end of the cylindrical portion 2A. In the illustrated example, the fitting protrusion 2P includes a rear fitting protrusion 2PB and a front fitting protrusion 2PF.

[0036] As shown in the left center and right center views of FIG. 4 , the coil bobbin 3 has an extension portion 3E extending radially outward from a main body portion 3M. The extension portion 3E is formed with fitting holes 3H that receive the fitting protrusions 1P of the first case member 1 and the fitting protrusions 2P of the second case member 2. Specifically, the extension portion 3E includes a left rear extension portion 3EBL that extends leftward, rearward, and left-rearward from the main body portion 3M, and a right front extension portion 3EFR that extends rightward, forward, and right-front from the main body portion 3M. The left rear extension portion 3EBL is formed with a left fitting hole 3HL that receives the left fitting protrusion 1PL of the first case member 1, and a rear fitting hole 3HB that receives the rear fitting protrusion 2PB of the second case member 2. In addition, the right front extension portion 3EFR is formed with a right fitting hole portion 3HR that receives the right fitting protrusion portion 1PR of the first case member 1, and a front fitting hole portion 3HF that receives the front fitting protrusion portion 2PF of the second case member 2.

[0037] As shown in the lower diagram of FIG. 1, the protrusion 1T of the first case member 1 and the protrusion 2T of the second case member 2 are fitted between the right front extension 3EFR and the left rear extension 3EBL.

[0038] The lower right diagram of Fig. 4 shows a state where the left fitting protrusion 1PL of the first case member 1 is fitted into the left fitting hole 3HL of the coil bobbin 3, and the right fitting protrusion 1PR of the first case member 1 is fitted into the right fitting hole 3HR of the coil bobbin 3. The lower left diagram of Fig. 4 shows a state where the rear fitting protrusion 2PB of the second case member 2 is fitted into the rear fitting hole 3HB of the coil bobbin 3, and the front fitting protrusion 2PF of the second case member 2 is fitted into the front fitting hole 3HF of the coil bobbin 3.

[0039] In this assembled state, the housing HS and the internal member IM are joined by welding using a laser LS. Specifically, as shown in Fig. 5, the outer surface (the surface on the Y1 side) of the left fitting protrusion 1PL of the first case member 1 fitted into the left fitting hole 3HL of the left rear extension 3EBL absorbs the laser LS1 that has passed through the left rear extension 3EBL, melts, and is welded to the inner wall surface of the left fitting hole 3HL. Also, the outer surface (the surface on the Y2 side) of the right fitting protrusion 1PR of the first case member 1 fitted into the right fitting hole 3HR of the right front extension 3EFR absorbs the laser LS2 that has passed through the right front extension 3EFR, melts, and is welded to the inner wall surface of the right fitting hole 3HR. The same is true for the rear fitting protrusion 2PB of the second case member 2 fitted into the rear fitting hole 3HB of the left rear extending portion 3EBL, and the front fitting protrusion 2PF of the second case member 2 fitted into the front fitting hole 3HF of the right front extending portion 3EFR. Note that the system for achieving welding using the laser LS may be configured so that the laser irradiation device that irradiates the laser LS is movable, or so that the vibration generating device 101 is movable, or so that both the laser irradiation device and the vibration generating device 101 are movable.

[0040] In the above example, the fitting hole portion 3H is formed so as to penetrate the extension portion 3E in the vertical direction (Z-axis direction), but it may also be formed so as not to penetrate the extension portion 3E, i.e., so as to form a recess.

[0041] In this way, the first case member 1 and the second case member 2 are joined to the coil bobbin 3 by welding using a laser LS having a predetermined wavelength. That is, the first case member 1 and the second case member 2 are joined indirectly via the coil bobbin 3.

[0042] Next, another example of the configuration of the combination of the housing HS and the internal member IM will be described with reference to Fig. 6. Fig. 6 is a cross-sectional view of the housing HS and the internal member IM (coil bobbin 3). Specifically, the upper view of Fig. 6 is an enlarged view of the area R1 surrounded by the dashed line in Fig. 5. The lower view of Fig. 6 is a view showing another example of the configuration of the combination of the housing HS and the internal member IM, and corresponds to the upper view of Fig. 6.

[0043] The combination of the housing HS and the internal member IM shown in the lower diagram of Figure 6 differs from the combination of the housing HS and the internal member IM shown in the upper diagram of Figure 6 in that the area of ​​the outer surface of the internal member IM exposed to the outside of the housing HS is small, but in other respects it is the same as the combination of the housing HS and the internal member IM shown in the upper diagram of Figure 6.

[0044] 6, height H1, which is the vertical length of the portion where the left fitting protrusion 1PL of the first case member 1 contacts with the left fitting hole 3HL formed in the left rear extension 3EBL of the coil bobbin 3, is smaller than height H2, which is the vertical length of the range of the outer surface of the internal member IM. On the other hand, in the example shown in the lower diagram of FIG. 6, height H1 is smaller than height H2A, which is the vertical length of the range of the outer surface of the internal member IM.

[0045] With this configuration, the example shown in the lower diagram of Fig. 6 has the effect of being able to reduce the area of ​​the outer surface of the internal member IM compared to the example shown in the upper diagram of Fig. 6, thereby enabling design requirements to be flexibly met. Note that the combination of the housing HS and the internal member IM may be configured so that the height H2 is even greater than in the example shown in the upper diagram of Fig. 6.

[0046] In the example shown in the upper diagram of Fig. 6, the laser beam LS1 is emitted parallel to the XY plane so as to strike the outer surface of the left fitting protrusion 1PL perpendicularly, but in the example shown in the lower diagram of Fig. 6, the laser beam LS1A may be emitted at an angle inclined with respect to the XY plane. In this case, the left fitting protrusion 1PL and the left fitting hole 3HL may be formed so as to be inclined with respect to the vibration axis VA so that the outer surface of the left fitting protrusion 1PL is perpendicular to the laser beam LS1A.

[0047] Next, the area to be welded using the laser LS will be described with reference to Fig. 7. Fig. 7 is a left side view of the electromagnetic exciter 101. For ease of explanation, Fig. 7 shows the position of the coil bobbin 3 as the internal member IM by a dot pattern so that the interior of the electromagnetic exciter 101 can be seen.

[0048] In FIG. 7, the area to be welded using the laser LS1 shown in FIG. 5 is indicated by a thick solid weld line WL. In the example shown in FIG. 7, the laser LS1 is first irradiated onto the left end of the weld line WL, and irradiation continues so that the irradiation point moves to the right at a predetermined speed while maintaining a predetermined output power. Then, when the irradiation point of the laser LS1 reaches the right end of the weld line WL, the direction of movement is reversed, and the irradiation point moves to the left at a predetermined speed while maintaining the predetermined output power. Then, when the irradiation point of the laser LS1 reaches the left end of the weld line WL, the direction of movement is reversed again. Welding of the left fitting protrusion 1PL and the left fitting hole 3HL is achieved by repeating this reciprocating movement of the irradiation point of the laser LS1 a predetermined number of times (for example, four times). Note that the predetermined number of times may be one. Furthermore, welding of the left fitting protrusion 1PL and the left fitting hole 3HL may be achieved by moving the irradiation point from the left end to the right end of the welding line WL in one go, or from the right end to the left end of the welding line WL in one go. Furthermore, the welding line WL need not be a single continuous line segment as shown in the drawings, but may be composed of multiple discontinuous line segments, or may be one or multiple points, or may be a combination of one or multiple points and one or multiple line segments.

[0049] Next, another example of the welding line WL will be described with reference to FIG. 8. FIG. 8 is a left side view of the left fitting protrusion 1PL, and corresponds to an enlarged view of the area R2 surrounded by the dashed line in FIG. 7. Specifically, the upper, middle, and lower views of FIG. 8 each show another example of the welding line WL. Note that in FIG. 8, the welding line is represented by a dot pattern for clarity. Furthermore, the following description with reference to FIG. 8 relates to the welding line WL in the left fitting protrusion 1PL, but it also applies similarly to the welding lines in the right fitting protrusion 1PR, rear fitting protrusion 2PB, and front fitting protrusion 2PF.

[0050] The example shown in the upper diagram of FIG. 8 differs from the example shown in FIG. 7, which has only one weld line WL, in that it has five weld lines WL1 to WL5. Specifically, the weld lines WL1 to WL5 are arranged so as to extend parallel to the XY plane at equal intervals in the vertical direction (Z-axis direction). That is, the weld lines WL1 to WL5 are arranged so as to extend along the circumference of a circle centered on the vibration axis VA and perpendicular to the vibration axis VA. The number of weld lines shown in the upper diagram of FIG. 8 may be two, three, four, or six or more. The interval between two weld lines may also be unequal.

[0051] The example shown in the center diagram of Fig. 8 differs from the example shown in Fig. 7, which has only one weld line WL extending parallel to the XY plane, in that it has five weld lines WL11-WL15 extending in the vertical direction (Z-axis direction). Specifically, the weld lines WL11-WL15 are arranged so as to extend parallel to each other in the vertical direction at equal intervals along the circumference of a circle centered on the vibration axis VA and perpendicular to the vibration axis VA. The number of weld lines shown in the center diagram of Fig. 8 may be two, three, four, or six or more. The interval between two weld lines may also be unequal.

[0052] The example shown in the lower diagram of Figure 8 differs from the example shown in Figure 7, which has only one weld line WL extending parallel to the XY plane, in that it has five weld lines WL21-WL25 that extend at an angle relative to the XY plane. Specifically, each of the weld lines WL21-WL25 is disposed at equal intervals along the circumference of a circle that is centered on the vibration axis VA and perpendicular to the vibration axis VA. The number of weld lines shown in the lower diagram of Figure 8 may be two, three, four, or six or more. The interval between two weld lines may also be unequal.

[0053] The welding lines may also be a combination of at least two of the three examples shown in the upper, middle, and lower diagrams of Figure 8. In this case, the two welding lines may intersect.

[0054] As described above, the electronic device ED according to the embodiment of the present disclosure includes a housing HS including a first case member 1 and a second case member 2, and an internal member IM housed and fixed inside the housing HS, as shown in FIG. 1. Both the first case member 1 and the second case member 2 are formed containing a resin (e.g., a light-absorbing resin) that absorbs a laser LS (see FIG. 5). The internal member IM is formed containing a resin (e.g., a light-transmitting resin) that transmits the laser LS, and as shown in FIG. 3, includes a main body 3M disposed inside the housing HS and an extension portion 3E extending from the main body 3M toward the outside of the housing HS and exposed to the outside of the housing HS. The first case member 1 and the second case member 2 are fixed to each other by welding a portion of the first case member 1 to the inside of a portion of the extension portion 3E using the laser LS and welding a portion of the second case member 2 to the inside of another portion of the extension portion 3E using the laser LS.

[0055] With this configuration, the electronic device ED can reduce the area of ​​the outer surface of the portion (internal member IM) made of resin that transmits the laser LS compared to when the cover that constitutes the housing is made of resin that transmits the laser. Also, since the electronic device ED does not need to have special parts for welding using the laser LS, the number of parts does not increase.

[0056] Furthermore, in this configuration, the first case member 1 and the second case member 2 are joined to the internal member IM without using a thermosetting adhesive. Therefore, in this configuration, the magnet 6 is not demagnetized by heat, and there are no design constraints on the magnetic circuit, such as satisfying the permeance coefficient required for using a thermosetting adhesive. Furthermore, in this configuration, the first case member 1 and the second case member 2 are joined to the internal member IM without using a photocurable adhesive. Therefore, in this configuration, the photocurable adhesive does not cure insufficiently. Furthermore, in this configuration, there is no rattle noise due to rattle during device operation, as occurs when caulking or snap joints are used.

[0057] 3, the extension 3E of the electronic device ED may have a fitting hole 3H. In this case, at least one of the first case member 1 and the second case member 2 may have a fitting protrusion that fits into the fitting hole 3H. The first case member 1 and the second case member 2 may be welded by a laser LS with the fitting hole 3H and the fitting protrusion fitted together.

[0058] This configuration has the advantage that welding is performed using a laser LS when at least one of the first case member 1 and the second case member 2 and the internal member IM are engaged with each other, thereby increasing the bonding strength between at least one of the first case member 1 and the second case member 2 and the internal member IM compared to when welding is performed using a laser LS when the members are not engaged with each other.

[0059] As shown in FIG. 1 , a vibration generator 101 according to an embodiment of the present disclosure includes a housing HS including a first case member 1 having an opening 1K and a second case member 2 arranged to close the opening 1K, a coil bobbin 3 accommodated and fixed inside the housing HS, a coil 5 wound around the coil bobbin 3, and a movable magnet body MT (see FIG. 2 ) supported inside the housing HS so as to be capable of vibrating. Both the first case member 1 and the second case member 2 are formed from a resin that absorbs laser light LS (see FIG. 5 ). The coil bobbin 3 is formed from a resin that transmits laser light LS and has a main body 3M arranged inside the housing HS and an extension 3E extending from the main body 3M toward the outside of the housing HS and exposed outside the housing HS. The first case member 1 and the second case member 2 are fixed to each other by welding a portion of the first case member 1 to the inside of a portion of the extension 3E using the laser light LS and welding a portion of the second case member 2 to the inside of another portion of the extension 3E using the laser light LS.

[0060] With this configuration, the electromagnetic exciter 101 can reduce the area of ​​the outer surface of the portion (coil bobbin 3) made of resin that transmits the laser LS compared to when the lid constituting the housing is made of resin that transmits the laser. Furthermore, since the electromagnetic exciter 101 does not need to include special parts for welding using the laser LS, the number of parts does not increase.

[0061] In the vibration generator 101, the extension 3E may have a fitting hole 3H as shown in FIG. 3. At least one of the first case member 1 and the second case member 2 may have a fitting protrusion that fits into the fitting hole 3H. In the illustrated example, as shown in FIG. 1, the first case member 1 has a fitting protrusion 1P, and the second case member 2 has a fitting protrusion 2P. In this case, the first case member 1 is welded by laser LS with the fitting hole 3H and the fitting protrusion 1P fitted together, and the second case member 2 is welded by laser LS with the fitting hole 3H and the fitting protrusion 2P fitted together.

[0062] This configuration has the advantage that welding is performed using laser LS when at least one of the first case member 1 and the second case member 2 and the coil bobbin 3 are engaged with each other, thereby increasing the bonding strength between at least one of the first case member 1 and the second case member 2 and the coil bobbin 3 compared to when welding is performed using laser LS when the members are not engaged with each other.

[0063] The preferred embodiments of the present disclosure have been described above in detail. However, the present invention is not limited to the above-described embodiments. Various modifications or substitutions may be applied to the above-described embodiments without departing from the scope of the present invention. Furthermore, the features described with reference to the above-described embodiments may be combined as appropriate unless technically inconsistent.

[0064] For example, in the above-described embodiment, the movable side member MB includes the movable magnet body MT and the fixed side member FB includes the coil 5, but the movable side member MB may include the coil and the fixed side member FB may include the magnet body. [Explanation of symbols]

[0065] 1...First case member 1A...Cylindrical part 1B...Top plate part 1P...Fitting protrusion 1PL...Left side fitting protrusion 1PR...Right side fitting protrusion 1T...Convex part 2...Second case member 2A...Cylindrical part 2B...Bottom plate part 2P...Fitting protrusion 2PB...Rear side fitting protrusion 2PF...Front side fitting protrusion 2T...Protrusion 3...Coil bobbin 3E...Extended part 3H...Fitting hole 3HB...Rear side fitting hole 3HF...Front side fitting hole 3HL...Left side fitting hole 3HR...Right side fitting hole 3M...Main body 3MD...Lower main body 3MU...Upper main body 3P...Protrusion 3PDL···Lower left protrusion 3PDR···Lower right protrusion 3PUL···Upper left protrusion 3PUR···Upper right protrusion 4···Insulating substrate 5···Coil 5D···Lower coil 5U···Upper coil 6···Magnet 7···Yoke 7D···Lower yoke 7U···Upper yoke 8···Jointing member 8D···Lower joining member 8U···Upper joining member 9···Elastic support member 9C···Notch 9CD···Lower notch 9CU···Upper notch 9D···Lower elastic support member 9E···Outer fixing part 9ED···Lower outer fixing part 9EU···Upper outer fixing part 9G···Elastic arm part 9GD···Lower elastic arm part 9GU···Upper elastic arm part 9H···Through hole 9HD···Lower through hole 9HU···Upper through hole 9I···Inner fixing part 9ID···Lower inner fixing part 9IU···Upper inner fixing part 9U···Upper elastic support member 10···Fastening member 10D···Lower fastening member 10U···Upper fastening member 101···Vibration generator CTR···Control unit DM···Drive means ED···Electronic device FB···Fixed side member HS···Housing IM···Internal member IT···Input terminal LS, LS1, LS2, LS1A···Laser MB···Movable side member MT···Movable magnet body VA···Vibration axis VE···Vibration device WL, WL1 to WL5, WL11 to WL15, WL21 to WL25···Welded line

Claims

1. a housing including a first case member and a second case member; an internal member housed and fixed inside the housing; the first case member and the second case member are both formed containing a resin that absorbs laser light, the internal member is formed containing a resin that transmits the laser, and has a main body portion that is disposed inside the housing, and an extension portion that extends from the main body portion toward the outside of the housing and is exposed to the outside of the housing; The first case member and the second case member are fixed to each other by welding a portion of the first case member to the inside of a portion of the extension portion by the laser and welding a portion of the second case member to the inside of another portion of the extension portion by the laser. An electronic device characterized by:

2. The extension portion has a fitting hole portion, At least one of the first case member and the second case member has a fitting protrusion portion that fits into the fitting hole portion, the first case member and the second case member are welded by the laser in a state in which the fitting hole portion and the fitting protrusion portion are fitted together; The electronic device according to claim 1 .

3. a housing including a first case member having an opening and a second case member arranged to close the opening; a coil bobbin accommodated and fixed inside the housing; a coil wound around the coil bobbin; a movable magnet body supported so as to be capable of vibrating freely within the housing, the first case member and the second case member are both formed containing a resin that absorbs laser light, the coil bobbin is formed containing a resin that transmits the laser, and has a main body portion that is disposed inside the housing, and an extension portion that extends from the main body portion toward the outside of the housing and is exposed outside the housing; The first case member and the second case member are fixed to each other by welding a portion of the first case member to the inside of a portion of the extension portion by the laser and welding a portion of the second case member to the inside of another portion of the extension portion by the laser. A vibration generating device characterized by:

4. The extension portion has a fitting hole portion, At least one of the first case member and the second case member has a fitting protrusion portion that fits into the fitting hole portion, the first case member and the second case member are welded by the laser in a state in which the fitting hole portion and the fitting protrusion portion are fitted together; The vibration generating device according to claim 3 .

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