JP5085782B1 - Speaker attachment / detachment mechanism - Google Patents

Abstract

Provided is a speaker attachment / detachment mechanism that can be attached and detached with one touch without using a tool when a speaker is attached to a speaker attachment member.
A speaker attachment / detachment mechanism for detachably attaching a speaker attached to a frame to a speaker attachment member, wherein a clip attachment portion for attaching an engagement clip 5 is provided at at least one position of the frame. Attach and attach to the corresponding locking portion of the speaker mounting member. The locking clip includes a pair of inclined projections 54 and 55 for expanding / shrinking in the lateral direction with respect to the direction of insertion into the speaker mounting member and locking the locking portion of the speaker mounting member on both side surfaces, A fixing portion 65 for fixing to the clip mounting portion on the insertion surface, and an insertion portion 68 for releasing the engagement by contracting the width of the locking clip when a minus driver is inserted and rotated on the back surface. It is characterized by that.
[Selection] Figure 1

Description

  The present invention relates to a speaker attaching / detaching mechanism that can be attached to a speaker mounting member with one touch without using a tool and can be easily detached.

  Many automobiles are equipped with a so-called car audio system, and their speakers are usually attached to, for example, a rear panel behind the rear seat, a lining portion of a door on both sides of the front seat, or a dashboard. In such an in-vehicle speaker, it is necessary to attach the speaker without rattling or disengagement even if a shock is caused by the vibration of the car or the opening / closing of the door. Etc. are common.

  However, fastening with screws is complicated and requires time (manhours are required to fasten the screws), and the attachment force tends to vary. On the other hand, a special tool is required for attachment by rivets, and it is difficult to remove after attachment (removal is almost impossible unless destroyed). For this reason, the speaker cannot be reattached or the speaker cannot be replaced due to an attachment mistake.

  In order to solve such a problem, for example, in Patent Document 1 by the present applicant, a part in which a resilient locking part for mounting to a door panel and an insertion locking piece are integrally formed on a frame on which a speaker is mounted. We are proposing an “in-vehicle door speaker mounting structure” that does not increase the number of points, and that facilitates manufacturing and handling.

  This Patent Document 1 discloses an on-vehicle door speaker mounting structure in which an elastic locking portion is provided on the outer peripheral edge of a resin frame, and at least two or more insertion locking pieces are provided at positions opposite to the elastic locking portion. Has been. The insertion locking piece and the elastic locking portion are integrally formed with the frame, and the elastic locking portion includes a thin-walled first piece and a second piece having elasticity due to the material, An opening for attaching a speaker is formed on the door panel, and an elastic locking portion to be inserted is engaged on the outer peripheral edge of the opening using its elastic force. A notch to be stopped is formed.

  Further, in Patent Document 2, a boss and a U-shaped elastic piece are provided so as to face each other across the sound emission hole formed in the mounting substrate, and are arranged to face the sound emission hole. An L-shaped presser in which a speaker frame is fastened and fixed to the boss by a screw and a “speaker mounting device” that presses and fixes the speaker frame at the tip of the elastic piece are described.

  According to the mounting structure and the mounting device of Patent Documents 1 and 2, the speaker can be mounted by tightening one screw, and the mounting is simplified compared to general fastening with a plurality of screws and fastening with a rivet. Therefore, the speaker can be reattached or the speaker can be replaced due to an attachment error.

Japanese Utility Model Publication No. 7-4127 Japanese Utility Model Publication No. 54-6939

  By the way, in the technique of the said patent document 1 and 2, the use which removes | attaches a speaker at the time of the maintenance and inspection after sale of a motor vehicle is not considered, and it is not suitable for the use which repeats attachment / detachment. For this reason, an attachment / detachment mechanism that can be easily attached when attaching the speaker to the speaker attachment member during the production stage of the automobile, and that the speaker can be easily removed during maintenance or inspection of the automobile and attached easily after completion. Is desired.

  The present invention has been proposed in view of the above, and the object is to attach the speaker to the speaker mounting member with one touch without using a tool and to remove it easily. An object of the present invention is to provide a speaker mounting / demounting mechanism that can be used.

  In order to solve the above-described problem, the speaker attaching / detaching mechanism according to the first aspect of the present invention is a speaker attaching / detaching mechanism for detachably attaching the speaker 2 attached to the frame 3 to the speaker attaching member 1. A clip mounting portion 3a for mounting the locking clip 5-1 is provided at at least one location of the speaker mounting member 3a. A corresponding locking portion provided on the speaker mounting member 1 by mounting the locking clip 5-1 on the clip mounting portion 3a. The locking clip 5-1 expands / contracts laterally with respect to the direction of insertion into the speaker mounting member 1, and the locking portions 1a of the speaker mounting member 1 are formed on both side surfaces. A pair of inclined projections 54 and 55 are provided for locking to the fixing portion 65 for fixing the clip mounting portion 3a of the frame 3 on the insertion surface, and a minus driver is inserted on the back surface. When rotated Te to, and having an insertion portion 68 for releasing the width is contracted engagement of the locking clip 5-1.

  Further, the invention according to claim 2 is the speaker attachment / detachment mechanism according to claim 1, wherein the locking clip 5-1 includes the first clip member 51 having the inclined protrusion 54 on one side surface, and the The second clip member 52 having an inclined protrusion 55 on the other side facing the inclined protrusion 54 of the first clip member 51, and the first and second clip members 51, 52 are sandwiched between these, An elastic member 53 that biases the first and second clip members 51 and 52 to expand in the lateral direction and a fitting surface of the first and second clip members 51 and 52 are formed to face each other. And an accommodating portion 56 and 57 for accommodating the elastic member 53.

  Furthermore, the invention according to claim 3 is the speaker attachment / detachment mechanism according to claim 2, wherein the engagement protrusions 58a, 58b provided upright on the bottom surface of the housing portion 57 of the second clip member 52, and the first A guide window 59 formed on the bottom surface of the accommodating portion 56 of the one clip member 51, engages with the engaging projections 58a, 58b, and slides the engaging projections 58a, 58b in the lateral direction; 59, the ribs 60a and 60b for engaging and guiding are formed on the upper and lower surfaces of 59 along the sliding direction and engage with the engaging portions 58a 'and 58b' at the tips of the engaging protrusions 58a and 58b. The elastic member 53 is mounted so as to wind the engagement protrusions 58a and 58b, one end is locked to the first clip member 51, and the other end is locked to the second clip member 52. , One end and the other end Wherein the the clip members 51 and 52 is a torsion spring that urges to expand laterally.

  Furthermore, the invention according to claim 4 is the speaker attachment / detachment mechanism according to claim 3, wherein the first notch 63 formed on the insertion surface of the first clip member 51 and the second clip member. 52 is formed on the insertion surface of the first clip member 51, and is formed on the back surface of the first clip member 51 with a second cutout portion 64 that forms a fixing portion 65 with a side wall that faces the first clip member 51. A third cutout 66 formed on the back surface of the second clip member 52, and a fourth screwdriver insertion portion 68 is formed when the first clip member 51 is fitted. A notch 67 is provided.

  In this invention of Claims 1-4, a latching clip is mounted | worn with the clip mounting part provided in the flame | frame, and a pair of inclined protrusion of this locking clip is pushed into the corresponding locking part of a speaker mounting member. When the locking clip is inserted with the width reduced, and inserted to a predetermined position, the inclined projection can be expanded and locked. Therefore, the speaker mounted on the frame can be attached to the speaker mounting member with one touch without using a tool. Further, by inserting and turning a flat-blade screwdriver into an insertion portion formed on the back surface of the locking clip, the width of the locking clip can be contracted and easily removed. Thereby, the speaker attached to the frame can be detachably attached to the speaker attachment member.

  Therefore, it is possible to provide a speaker attaching / detaching mechanism that can be attached with one touch without using a tool when attaching the speaker to the speaker attaching member and can be easily detached.

It is a figure which shows the latching clip used with the attachment or detachment mechanism of the speaker which concerns on the Example of this invention. It is a figure which shows the schematic structure of the whole speaker attachment / detachment mechanism based on the Example of this invention. FIG. 3 is an exploded perspective view of FIG. 2. It is the top view which looked at the flame | frame in FIG. 3 from upper direction. FIG. 5 is an enlarged perspective view showing the vicinity of the clip mounting portion for explaining the mounting of the locking clip to the frame shown in FIG. 4. FIG. 6 is an enlarged front view showing a part of the speaker mounting member corresponding to the vicinity of the clip mounting portion of the frame shown in FIG. 5. FIG. 7 is a rear view of a state where the frame shown in FIG. 5 is attached to the speaker mounting member shown in FIG. 6. It is sectional drawing which shows the case where a latching clip locks in the state which attached the frame to the speaker mounting member, and the case of unlocking.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  1 (a) to 1 (f) are diagrams showing locking clips used in the speaker attaching / detaching mechanism according to the embodiment of the present invention, and FIG. 2 (a) is an overall view of the speaker attaching / detaching mechanism according to the embodiment. 3 is an exploded perspective view of FIG. 2A, and FIG. 4 is a plan view of the frame in FIG. 3 as viewed from above. As shown in FIGS. 2A and 3, the attachment / detachment mechanism includes a speaker mounting member 1, a speaker 2, a frame 3 to which the speaker 2 is mounted, and water blocking between the speaker mounting member 1 and the frame 3. And a locking member 5-1 to 5-3 for attaching the speaker 2 mounted on the frame 3 to the speaker mounting member 1 and the like.

  The speaker mounting member 1 is mounted on, for example, a rear panel behind the rear seat, a lining of doors on both sides of the front seat, or a speaker mounting opening provided on a dashboard or the like. The speaker mounting member 1 is formed of resin or the like, and has locking portions 1a, 1b, 1c for mounting the frame 3 with the speaker 2 mounted on the outer periphery, and a magnetic circuit unit of the speaker 2 in the center. An opening 1d is provided. Reference numerals 1e, 1f, 1g, 1h, and 1i denote screw holes for mounting the speaker mounting member 1 to a rear panel, door panel, dashboard, or the like around the speaker mounting opening.

  The frame 3 is provided with clip mounting portions 3a, 3b, 3c at positions corresponding to the locking portions 1a, 1b, 1c of the speaker mounting member 1, respectively. Further, on the outer peripheral edge of the frame 3, there is provided a wiring fixing portion 3d for leading the voice coil wirings 6a, 6b of the speaker 2 to the outside.

  As shown in an enlarged view in FIG. 2B, the clip mounting portion 3a in the frame 3 is provided with a circular insertion window 3e for inserting a minus driver. On the clip mounting portion 3a around the insertion window 3e, an arrow indicating the rotation direction at the time of removal is marked by a mold or the like. The bottom surface (rear surface) of the locking clip 5-1 is exposed in the insertion window 3e, and a slotted screwdriver is inserted into the area 9 indicated by the oblique line on the bottom surface of the locking clip 5-1, so that it rotates clockwise. Thus, the area 9 is expanded and the width of the locking clip 5-1 contracts, so that the locking (locking state) between the locking portion 1a of the speaker mounting member 1 and the clip mounting portion 3a is released. It has become.

  Next, the structure of the clip mounting part 3a and the locking part 1a will be described in detail. Each of the clip mounting portions 3a, 3b, and 3c has a structure in which a frame-shaped storage portion that stores the locking clips 5-1 to 5-3 is erected toward the speaker mounting member 1 as shown in FIG. ing. A plurality of triangular ribs 7a and 7b are provided on the upper and lower surfaces of these accommodating portions, respectively, to reinforce the accommodating portion and to position and prevent rattling when the speaker is mounted on the speaker mounting member 1. Openings for insertion of the locking clips 5-1 to 5-3 are provided on both side surfaces of the housing portion, and the locking clips 5-1 to 5-3 are respectively inserted from either one of them. .

  FIG. 1A is an exploded perspective view showing a configuration example of the locking clip 5 (5-1 to 5-3), and FIGS. 1B, 1C, and 1D are respectively the views of FIG. It is the figure seen from arrow Ab, Ac, Ad direction in the state which assembled the latching clip 5. FIG. 1 (e) is a side view of the second clip member constituting the locking clip 5 of FIG. 1 (a) as viewed from the direction of the arrow Ae, and FIG. 1 (f) is the locking of FIG. 1 (a). It is the side view which looked at the 1st clip member which constitutes clip 5 from arrow Af.

  The locking clip 5 includes first and second clip members 51 and 52 and an elastic member that urges the first and second clip members 51 and 52 to expand in the lateral direction, in this example, torsion. And a spring 53. The first and second clip members 51 and 52 are made of a resin material such as PA-GF50 or 66 nylon in consideration of durability, and the torsion spring 53 is also made of SUS304 or the like in consideration of durability. Spring steel is used.

  An inclined projection 54 is formed on one side surface of the first clip member 51, and an inclined projection 55 is formed on the other side surface of the second clip member 52 facing the inclined projection 54. Has been. These inclined projections 54 and 55 include gentle tapered portions 54a and 55a with respect to the insertion direction (upward in FIGS. 1A and 1B) and steep tapered portions 54b and 55b in the opposite direction. Yes. The tapered portions 54a and 55a are for contracting the locking clip 5 inward against the spring force of the torsion spring 53 when inserted into the speaker mounting member 1, and the tapered portions 54b and 55b are mounted on the speaker. This is to prevent rattling by utilizing the spring force of the torsion spring 53 when the member 1 is locked.

  On the fitting surface side of the first and second clip members 51 and 52, accommodating portions 56 and 57 of the torsion spring 53 are formed to face each other. The first and second clip members 51 and 52 are fitted so as to be shifted so that the inclined projections 54 and 55 protrude from the left and right side surfaces as shown in FIG.

  As shown in FIGS. 1A and 1E, a pair of engaging protrusions 58a and 58b are erected on the bottom surface of the accommodating portion 57 of the second clip member 52. The outer surfaces of the tips of these engagement protrusions 58a and 58b are curved, and hook-shaped engagement portions 58a 'and 58b' are formed above and below the curved surfaces, respectively. Further, as shown in FIGS. 1A and 1F, a rectangular guide window 59 for sliding the engagement protrusions 58a and 58b laterally on the bottom surface of the accommodating portion 56 of the first clip member 51 is shown in FIGS. Is formed. On the side walls opposed to the upper and lower sides of the guide window 59, the ribs 60a for engaging and guiding that engage with the engaging portions 58a 'and 58b' at the tips of the engaging protrusions 58a and 58b along the sliding direction. 60b is formed.

  The torsion spring 53 is mounted by winding the engagement protrusions 58a and 58b. One end of the torsion spring 53 is sandwiched and locked between the side wall of the accommodating portion 57 and the locking piece 61 in the second clip member 52, and the other end is locked by the first clip member 51. Locked to the pillar 62. The locking column 62 has a quadrangular column shape and is hollow inside. Accordingly, the torsion spring 53 biases the first and second clip members 51 and 52 so as to expand in the lateral direction at one end and the other end.

  In assembly, the engaging protrusions 58 a and 58 b on the second clip member 52 side are inserted into the guide window 59 of the first clip member 51. In this case, the engaging protrusions 58a and 58b are pressed by the curved surfaces at the tips of the engaging protrusions 58a and 58b being brought into contact with the upper and lower surfaces of the guide window 59 so that the engaging protrusions 58a and 58b are elastically caused by the material (resin). It bends inward and is restored when it reaches the outside of the guide window 59, and the engaging portions 58a 'and 58b' are locked to the ribs 60a and 60b. Accordingly, the disconnection is prevented, and the first and second clip members 51 and 52 are integrated. The ribs 60a and 60b are sliding guides, and can slide in the lateral direction along the ribs 60a and 60b.

  A first notch 63 is formed on the upper surface of the first clip member 51 (insertion surface to the speaker mounting member 1), and a second notch 64 is formed on the upper surface of the second clip member 52. Has been. When the first and second clip members 51 and 52 are fitted, as shown in FIG. 1C, one side wall 63a of the first notch 63 is formed on the upper surface, and the second A fixing portion 65 as shown in FIG. 1B is formed between the notch portion 64 and the side wall 64a facing the side wall 63a.

  A third notch 66 is formed on the lower surface (rear surface) of the first clip member 51, and a fourth notch 67 is formed on the lower surface of the second clip member 52. When the first and second clip members 51 and 52 are fitted by the notches 66 and 67, as shown in FIG. 1D, one side wall 66a of the third notch 66 and An insertion portion 68 of a minus driver as shown in FIG. 1B is formed between the fourth cutout portion 67 and the side wall 67a facing the side wall 66a. When a flathead screwdriver is inserted into this insertion portion 68 and rotated clockwise, the first clip member 51 moves to the right and the second clip member 52 moves to the left, and the width of the insertion portion 68 is increased. The width of the stop clip 5 (the width between the inclined projections 54 and 55) contracts.

  Thus, the locking clip 5 expands / contracts laterally with respect to the direction of insertion into the speaker mounting member 1, and the inclined protrusions 54 and 55 are the locking portions of the speaker mounting member 1. Locked to 1a, 1b, 1c. And this latching clip 5 is expanded when the fixing part 65 for fixing to the clip mounting part 3a of the said frame 3 on the insertion surface, and a minus driver is inserted and rotated on the back surface. An insertion portion 68 of a minus driver for releasing the engagement by contracting the width of the clip 5 is provided.

  FIG. 5 is for explaining the mounting of the locking clip 5 to the frame 3 shown in FIG. 4 and shows the vicinity of the clip mounting portion 3a in an enlarged manner. The clip mounting portion 3a (frame-shaped housing portion) of the frame 3 is formed with a slit-shaped insertion port 8 having a circular hole formed in the center, and a slotted driver insertion window 3e is formed on the front side. ing.

  The locking clip 5 is inserted laterally from one side surface of the clip mounting portion 3a of the frame 3 as indicated by an arrow Ag. Then, a locking member 10 for locking the locking clip 5 in the insertion port 8 is inserted in the direction of the arrow Ah, and a locking piece 10 a erected on the back surface of the locking member 10 is inserted through the insertion port 8. Then, the inclined projections 54 and 55 at both ends of the locking clip 5 are fixed in a state of protruding from the housing portion by being inserted into the fixing portion 65 of the locking clip 5.

  6 is an enlarged front view showing a part of the speaker mounting member 1 corresponding to the vicinity of the clip mounting portion 3a shown in FIG. In the speaker mounting member 1, flanges 1j are formed at positions corresponding to the vicinity of the clip mounting portion 3a of the frame 3, and a fitting window 69 into which the frame-shaped housing portion of the frame 3 is inserted into the flange 1j. Is formed. On the upper side surface and the lower side surface of the fitting window 69, fitting grooves 70a and 70b into which the ribs 7a and 7b formed in the housing portion are inserted are provided.

  Then, as shown in FIG. 3, the clip clips 3a, 3b, and 3c are locked to the clip mounting portions 3a, 3b, and 3c, respectively, via the water stop seal member 4 to the lock portions 1a, 1b, and 1c of the speaker mounting member 1. The frame 3 into which 5-1 to 5-3 is inserted is aligned and pushed in and attached. At this time, the locking clips 5-1 to 5-3 move inward against the spring force by the tapered portions 54 a and 55 a being pressed against both side surfaces of the fitting window 69, and the inclined protrusions 54 and 55. When the front end of the engaging clip 69 reaches the fitting window 69, it is restored by the elastic force of the spring, and the tapered portions 54 b and 55 b of the locking clip 5 are engaged with both side surfaces of the fitting window 69 of the speaker mounting member 1. Therefore, the frame 3 with the speaker 2 attached can be attached to the speaker attachment member 1 with one touch without using a tool.

  FIG. 7 shows this state when viewed from the back side, and inclined projections 54 and 55 of the locking clip 5 projecting from both ends of the housing portion are engaged with both side surfaces of the fitting window 69 of the speaker mounting member 1. As a result, the frame 3 is attached to the speaker mounting member 1.

  FIGS. 8A and 8B are cross-sectional views showing a case where the locking clip 5 is locked and an unlocking state in a state where the frame 3 shown in FIG. 7 is attached to the speaker mounting member 1. . As shown in FIG. 8A, the inclined protrusion 54 of the first clip member 51 of the locking clip 5 and the inclined protrusion 55 of the second clip member 52 are respectively formed on the fitting window 69 of the speaker mounting member 1. It is locked by protruding from both sides to the left and right.

  On the other hand, when a flathead screwdriver is inserted into the insertion portion 68 and rotated clockwise, the width of the locking clip 5 contracts as shown in FIG. 8B, and the inclined projection 54 of the first clip member 51 The inclined projection 55 of the second clip member 52 is unlocked by being inside the both side surfaces of the fitting window 69 of the speaker mounting member 1, and the frame 3 is detached from the speaker mounting member 1.

  According to the above configuration, the retaining clips 5-1, 5-2, and 5-3 are mounted on the clip mounting portions 3a, 3b, and 3c provided on the frame 3, and the retaining clips 5-1, By pressing the pair of inclined projections 54 and 55 of 5-2 and 5-3 into the locking portions 1a, 1b and 1c of the speaker mounting member 1, the speaker 2 mounted on the frame 3 can be touched with one touch without using a tool. It can be attached to the speaker mounting member 1. Moreover, since the locking portions 1a, 1b and 1c, the clip mounting portions 3a, 3b and 3c, and the locking clips 5-1, 5-2 and 5-3 are all the same configuration, the mounting force varies. It can be difficult.

  Further, by inserting a flathead screwdriver into the insertion portion 68 formed on the back surface of the locking clips 5-1, 5-2, 5-3 and rotating it clockwise, the locking clips 5-1, 5- It can be easily removed by shrinking the width of 2, 5-3. Thus, the speaker 2 attached to the frame 3 can be detachably attached to the speaker attachment member 1.

  Further, since the tapered protrusions 54 and 55 of the locking clips 5-1 to 5-3 are provided with the tapered portions 54b and 55b on the engaging surface with the fitting window 69 of the speaker mounting member 1, the locking clips 5-1 to 5-3 are locked. Can prevent rattling.

  Furthermore, since the retaining clips 5-1 to 5-3 are disposed outside the sealing member 4 for stopping water, a decrease in water resistance can be suppressed.

  Therefore, when the speaker is mounted on the speaker mounting member, it can be attached with one touch without using a special tool, and can be easily detached. As a result, it is possible to provide a speaker attachment / detachment mechanism that greatly improves the convenience of attaching / detaching the speaker.

  Although the present invention has been described with reference to the embodiments, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the scope of the invention at the stage of implementation. For example, in the above-described embodiment, an example in which three places are fixed by the locking clip has been shown. However, one place, two places, or four or more places may be fixed according to the attachment place or the required attachment strength. good. When fixing at one place, for example, instead of the clip mounting portions 3b and 3c of the frame 3 in FIGS. 2 and 3, an insertion locking piece is provided, and the speaker mounting portion 1 receives these insertion locking pieces. Should be provided.

  Further, the inclined projections 54 and 55 of the locking clips 5-1 to 5-3 are provided with taper portions 54b and 55b on the engaging surface with the fitting window 69 of the speaker mounting member 1 so that rattling at the time of locking is prevented. However, by appropriately selecting the thickness and material of the seal member 4, rattling can be prevented without providing a taper portion.

DESCRIPTION OF SYMBOLS 1 Speaker mounting member 1a, 1b, 1c Locking part 1d Opening 1e, 1f, 1g, 1h, 1i Screw hole 1j Flange 2 Speaker 3 Frame 3a, 3b, 3c Clip mounting part 3d Fixing part 3e Insertion window 4 Seal member 5, 5-1 to 5-3 Locking clips 6 a and 6 b Wiring 7 a and 7 b Rib 8 Insertion port 9 Region 10 Locking member 10 a Locking piece 51 First clip member 52 Second clip member 53 Torsion spring (elastic member)
54, 55 Inclined projections 54a, 54b, 55a, 55b Tapered portions 56, 57 Receiving portions 58a, 58b Engaging projections 58a ', 58b' Engaging portions 59 Guide windows 60a, 60b Engaging and guiding ribs 61 Locking Piece 62 Locking pillar 63, 64, 66, 67 Notch 63a, 64a, 66a, 67a Side wall 65 Fixing part 68 Insertion part 69 Fitting window 70a, 70b Fitting groove Ab, Ac, Ad, Ae, Af, Ag, Ah arrow

Claims (4)

A speaker attaching / detaching mechanism for detachably attaching the speaker (2) attached to the frame (3) to the speaker attaching member (1),
A clip mounting portion (3a) for mounting the locking clip (5-1) is provided at at least one position of the frame (3), and the locking clip (5-1) is mounted on the clip mounting portion (3a). It attaches to the corresponding latching | locking part (1a) provided in the said speaker mounting member (1),
The locking clip (5-1) expands / contracts laterally with respect to the direction of insertion into the speaker mounting member (1), and locking portions (1a) of the speaker mounting member (1) are formed on both side surfaces. A pair of inclined projections (54, 55) for locking to the fixing portion (65) for fixing to the clip mounting portion (3a) of the frame (3) on the insertion surface, and a minus driver on the back surface. A speaker attachment / detachment mechanism comprising an insertion portion (68) for releasing the engagement by contracting the width of the locking clip (5-1) when inserted and rotated.   The locking clip (5-1) includes a first clip member (51) having the inclined protrusion (54) on one side surface, and an inclined protrusion (54) of the first clip member (51). Is sandwiched between a second clip member (52) having an inclined projection (55) on the other side surface facing to the first clip member (51, 52), and the first and second clip members (51, 52). The elastic member (53) for urging the clip members (51, 52) to be expanded in the lateral direction and the fitting surfaces of the first and second clip members (51, 52) are formed to face each other. The speaker attaching / detaching mechanism according to claim 1, further comprising an accommodating portion (56, 57) accommodating the elastic member (53). Engagement protrusions (58a, 58b) erected on the bottom surface of the housing portion (57) of the second clip member (52), and the housing portion (56) of the first clip member (51). A guide window (59) that is formed on the bottom surface, engages with the engagement protrusions (58a, 58b) and slides the engagement protrusions (58a, 58b) in the lateral direction, and an upper surface of the guide window (59) The engaging and guiding ribs (60a, 60b) are formed on the lower surface along the sliding direction and engage with the engaging portions (58a ', 58b') at the tips of the engaging protrusions (58a, 58b). And
The elastic member (53) is mounted so as to wind the engaging protrusion (58a, 58b), one end is locked to the first clip member (51), and the other end is the second clip member. 3. A torsion spring that is locked to (52) and that urges the first and second clip members (51, 52) to expand laterally at one end and the other end. The speaker mounting / demounting mechanism described. A first notch (63) formed on the insertion surface of the first clip member (51) and an insertion surface of the second clip member (52), the first clip member (51 ) And a third cutout portion formed on the back surface of the first clip member (51). (66) and the fourth clip member formed on the back surface of the second clip member (52), and when inserted into the first clip member (51), forms a slotted screwdriver insertion portion (68). The speaker attaching / detaching mechanism according to claim 3, further comprising a notch (67).

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