CN108696779B

CN108696779B - Positioning mechanism and sound box with same

Info

Publication number: CN108696779B
Application number: CN201810478098.XA
Authority: CN
Inventors: 顾春挺
Original assignee: Speaker Electronic Jiashan Co Ltd
Current assignee: Speaker Electronic Jiashan Co Ltd
Priority date: 2018-05-18
Filing date: 2018-05-18
Publication date: 2020-04-24
Anticipated expiration: 2038-05-18
Also published as: CN108696779A

Abstract

A positioning mechanism and a sound box with the same are provided, wherein the positioning mechanism comprises a shell, a supporting rod sleeve and a supporting rod. The shell is a cone-shaped cylinder. The housing includes a plurality of dovetail slots. The support rod sleeve comprises a body and at least one positioning strip. The positioning strip comprises a strip part, two elastic parts and a trapezoid table, wherein the two elastic parts are arranged on two sides of the strip part respectively, and the trapezoid table is arranged on the outer side wall of the strip part. The trapezoidal table is inserted into one of the plurality of trapezoidal grooves to position the support rod sleeve relative to the housing. Because the open end is provided with a plurality of dovetail grooves, and the last trapezoidal platform that is provided with of bracing piece sleeve, work as the bracing piece inserts when the bracing piece sleeve, the trapezoidal platform on the location strip will insert the dovetail groove, because the bracing piece inserts the bracing piece sleeve makes the trapezoidal platform coupling is in the dovetail groove reaches the effect of location.

Description

Positioning mechanism and sound box with same

Technical Field

The invention belongs to the technical field of mechanical equipment, and particularly relates to a positioning mechanism and a sound box with the same.

Background

The loudspeaker box is a terminal of the whole sound system, which functions to convert audio electric energy into corresponding sound energy and radiate the sound energy to the space, and is an extremely important component of the sound system because it is a key task to convert an electric signal into an acoustic signal for human ear listening. The sound box needs to directly interact with human hearing which is very sensitive and has strong capability of distinguishing timbre of complex sound. The arrangement of the sound field is therefore of great influence on the hearing enjoyment of people.

In order to adapt to different use occasions, one of the most common methods for adjusting the sound propagation direction of the sound box is to rotate the sound box. For example, CN201120334933.6 discloses a rotatable high pitch loudspeaker box. This rotatable high pitch audio amplifier includes audio amplifier body and base. The sound box body is rotatably connected with the base. The rotatable connection means that the bottom of the sound box body is fixedly connected with a rotating shaft, a through hole for inserting the rotating shaft is formed in the center of the top of the base, and the rotating shaft is in clearance fit with the inner wall of the through hole. The rotatable high pitch sound box can rotate in the horizontal direction. However, it is known that the sound quality is damaged by slight vibration of the sound box, and the technical solution disclosed in the prior art cannot position the rotated sound box body, so that due to the manufacturing tolerance, the sound box still vibrates to generate noise, thereby affecting the quality of the sound box.

Disclosure of Invention

In view of the above, the present invention provides a positioning mechanism and a sound box having the same to solve the above problems.

A positioning mechanism comprises a shell, a supporting rod sleeve sleeved in the shell, and a supporting rod inserted in the supporting rod sleeve. The shell is a cone-shaped cylinder. On the section vertical to the axial direction of the cone-shaped cylinder, the closed end of the shell is circular, and the cross-sectional area of the open end of the shell is larger than the circular cross-sectional area. The open end has a long axis. The housing includes a plurality of trapezoidal grooves provided on at least one of the side walls where the long axis is located. The outer diameter of the strut sleeve corresponds to the diameter of the circle. The supporting rod sleeve comprises a body and at least one positioning strip arranged on the side wall of the body. The body is provided with at least one through hole groove along the axial direction of the conical cylinder so as to accommodate the positioning strip. The two ends of the positioning strip are fixedly arranged in the through hole groove and comprise a strip-shaped part, two elastic parts which are respectively arranged at two sides of the strip-shaped part and a trapezoid table which is arranged on the outer side wall of the strip-shaped part. The trapezoidal table is inserted into one of the plurality of trapezoidal grooves to position the support rod sleeve relative to the housing. The diameter of the support rod is equivalent to the inner diameter of the support rod sleeve.

Further, the cross section of the opening end is formed by scanning a quadrangle to a circle, the quadrangle comprises two opposite straight sides and two opposite arc sides, and the diameters of the two arc sides are equivalent to the diameter of the circle.

Furthermore, the number of the trapezoidal grooves is odd, and the extending direction of the trapezoidal groove in the middle is parallel to the axial direction of the cone-shaped cylinder.

Furthermore, the number of the trapezoidal grooves is 5, and an included angle between the extending direction of one of the two trapezoidal grooves on the two sides of the middle trapezoidal groove and the axial direction of the conical cylinder is 1-10 degrees.

Furthermore, the included angle between the extending direction of the other one of the two trapezoidal grooves at the two sides of the middle trapezoidal groove and the axial direction of the conical cylinder is 10-20 degrees.

Further, still be provided with at least one tight fit sand grip on the telescopic inside wall of bracing piece, the tight fit sand grip protrusion the telescopic body of bracing piece.

Furthermore, the extending direction of the tight fit convex strips is parallel to the axial direction of the conical cylinder, and 10 tight fit convex strips are arranged at intervals.

Further, the tight-fitting convex strips are circular strips arranged on the inner side wall of the support rod sleeve.

Further, the sound box with the positioning mechanism comprises the positioning mechanism and a bottom cover fixedly arranged on the positioning mechanism. The bottom cover is fixedly connected with the shell.

Further, the support rod passes through the bottom cover.

Compared with the prior art, the outer shell is a conical cylinder, the closed end of the outer shell is circular on the axial section vertical to the conical cylinder, and the cross section area of the open end of the outer shell is larger than that of the circular section, so that the support rod sleeve can swing left and right on the conical cylinder. Meanwhile, a plurality of trapezoidal grooves are formed in at least one side wall of one side where the long shaft of the opening end is located, the supporting rod sleeve is provided with a trapezoidal platform of a positioning strip protruding out of the outer side wall of the supporting rod sleeve, when the supporting rod is inserted into the supporting rod sleeve, the trapezoidal platform on the positioning strip is inserted into the trapezoidal grooves, and the supporting rod is inserted into the supporting rod sleeve, so that the trapezoidal platform is coupled with the trapezoidal grooves to achieve the positioning effect, when the supporting rod sleeve rotates to a certain position, the supporting rod sleeve can be fixed relative to the shell, the positioning purpose is achieved, and noise generated by vibration of the loudspeaker box with the positioning mechanism can be further avoided.

Drawings

Fig. 1 is an exploded schematic view of a positioning mechanism according to the present invention.

Fig. 2 is a schematic cross-sectional view of the sound box with the positioning mechanism of fig. 1.

Detailed Description

Specific examples of the present invention will be described in further detail below. It should be understood that the description herein of embodiments of the invention is not intended to limit the scope of the invention.

Fig. 1 to fig. 2 are schematic structural diagrams of a sound box with a positioning mechanism according to the present invention. The sound box with the positioning mechanism comprises a positioning mechanism 10 and a bottom cover 20 fixedly arranged on the positioning mechanism 10. It is conceivable that the loudspeaker box may also comprise other functional modules, such as speakers, electrical devices, mounting elements, etc., which are known to those skilled in the art and will not be described in detail herein.

The positioning mechanism 10 includes a housing 11, a support rod sleeve 12 sleeved in the housing 11, and a support rod 13 inserted in the support rod sleeve 12.

The housing 11 is a cone-shaped cylinder, and is formed by fastening and assembling two half cone-shaped cylinders 111 which are symmetrically arranged. Two half cone 111 symmetry is provided with does benefit to the mould design, only designs one set of mould promptly can, only need when using with these two half cone 111 lock-ins together, can accomplish the equipment of this shell 11 to be favorable to reduce cost. In order to achieve the above purpose, the structure provided on the semi-conical cylinder 111 should use the axial direction of the semi-conical cylinder 111 as a boundary, otherwise it is difficult to complete the snap-fit assembly. It will be understood that the plane of the dividing line should be perpendicular to the plane of symmetry of the two half cones 111, so that each half cone 111 has the same configuration. In a cross section perpendicular to the axial direction of the tapered cylinder, the housing 11 includes a closed end 114, and an open end 112. The closed end 114 has a circular cross-section, and the cross-sectional area of the open end 112 of the housing 11 is larger than the circular cross-sectional area, so that the housing 11 is formed by scanning the open end 112 toward the closed end 114. The open end 112 may be square, rectangular, polygonal, or elliptical. It is contemplated that the open end 112 has a long axis. It will be understood that the major axis of the rectangle is the long side and the major axis of the ellipse is the geometric major axis. And the major axis of the square can be any of its sides. Whereas for a polygon, its long axis should be the distance between the two sides that are the largest. In this embodiment, the cross section of the open end 112 is formed by scanning a quadrilateral to a circle, wherein the quadrilateral comprises two opposite straight sides and two opposite arc sides, and the two arc sides have a diameter equivalent to that of the circle.

The housing 11 further includes a plurality of trapezoidal grooves 113 disposed on at least one of the side walls where the long axis is located, the number of the trapezoidal grooves 113 may be odd, and the extending direction of one trapezoidal groove 113 located in the middle is parallel to the axial direction of the tapered cylinder. In this embodiment, the number of the trapezoidal grooves 113 is 5, and an included angle between an extending direction of one of the two trapezoidal grooves 113 located at both sides of the middle one of the trapezoidal grooves 113 and the axial direction of the tapered cylinder is 1 to 10 degrees. And the included angle between the extending direction of the other one of the two trapezoidal grooves 113 positioned at the two sides of the middle trapezoidal groove 113 and the axial direction of the tapered cylinder is 10-20 degrees. In this embodiment, one angle is 5 degrees and the other angle is 10 degrees.

The outer diameter of the support rod sleeve 12 is equal to the diameter of the circle and includes a body 121, at least one positioning strip 122 disposed on the sidewall of the body 121, and at least one tight-fitting protrusion 123 disposed on the inner sidewall of the body 121. Similarly, the strut sleeve 12 is also symmetrical in two parts for ease of manufacture and cost reduction. The plane where the axes of the two half cone-shaped cylinders 111 and the half cone-shaped cylinder 111 are located is a symmetry plane, and the symmetry planes of the two parts of the support rod sleeve 12 are perpendicular to the symmetry planes of the two half cone-shaped cylinders 111, so as to facilitate assembly of the support rod sleeve 12. The body 121 is a cylindrical structure, and at least one through hole groove 127 is formed along the axial direction of the conical cylinder to accommodate the positioning strip 122. The two ends of the positioning bar 122 are fixedly disposed in the through hole groove 127 and include a bar portion 124, two elastic portions 125 disposed on two sides of the bar portion 124, and a trapezoid table 126 disposed on an outer sidewall of the bar portion 124. The strip 124 should be flush with the inner and outer sidewalls of the body 121. The elastic portion 125 is an undulating arc portion, so that the lock bar 122 has certain elasticity. The contour of the trapezoidal mesa 126 should have the same structure as the contour of the trapezoidal groove 113. Since the body 121 is formed of two half cylinders of the same structure, the positioning bar 122 has two. The trapezoidal platform 126 is inserted into one of the plurality of trapezoidal grooves 113 to position the support rod sleeve 12 relative to the housing 11. The tight-fit protruding strips 123 are arranged on the inner side wall of the supporting rod sleeve 12, and the tight-fit protruding strips 123 protrude out of the body 121 of the supporting rod sleeve 12. The extending direction of the tight-fitting convex strips 123 can be parallel to the axial direction of the conical barrel, and 10 tight-fitting convex strips are arranged at intervals. It is understood that the tight-fitting ribs 123 may also be circular ribs arranged on the inner side wall of the support rod sleeve 12. In this embodiment, the tight-fitting ribs 123 are ribs arranged on the inner sidewall and parallel to the axial direction of the tapered cylinder. The tight-fitting protrusion 123 is used to tightly fit the support rod sleeve 12 with the support rod 13, so as to reduce the influence caused by tolerance in manufacturing.

The support rod 13 is a rod-shaped structure, one end of which is inserted into the support rod sleeve 12, and the other end of which can be inserted into a base (not shown). The support rod 13 has a diameter corresponding to the inner diameter of the support rod sleeve 12 so as to be inserted into the support rod sleeve 12.

The bottom cover 20 is fixedly connected to the housing 11, and the bottom cover 20 is used for arranging other structural components, such as support rods, or for covering the bottom of the housing 11. In the present embodiment, the support bar 13 is inserted into the bottom cover 20.

Compared with the prior art, the housing 11 is a cone-shaped cylinder, and in the section perpendicular to the axial direction of the cone-shaped cylinder, the closed end 114 of the housing is circular, and the cross-sectional area of the open end 112 of the housing is larger than the circular cross-sectional area, so that the support rod sleeve 12 can swing left and right on the cone-shaped cylinder. Meanwhile, as a plurality of trapezoidal grooves 113 are formed in at least one side wall where one side of the long axis of the open end 112 is located, and the supporting rod sleeve 12 is provided with the trapezoidal platform 126 of the positioning bar 122 protruding out of the outer side wall of the supporting rod sleeve 12, when the supporting rod 13 is inserted into the supporting rod sleeve 12, the trapezoidal platform 126 on the positioning bar 122 is inserted into the trapezoidal groove 113, and as the supporting rod 13 is inserted into the supporting rod sleeve 12, the trapezoidal platform 126 is coupled to the trapezoidal groove 113 to achieve the positioning effect, so that when the supporting rod sleeve 12 rotates to a certain position, the supporting rod sleeve 12 can be fixed relative to the housing 12, thereby achieving the positioning purpose, and further enabling the sound box with the positioning mechanism to generate noise due to vibration.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, and any modifications, equivalents or improvements that are within the spirit of the present invention are intended to be covered by the following claims.

Claims

1. A positioning mechanism, characterized by: the positioning mechanism comprises a shell, a supporting rod sleeve sleeved in the shell and a supporting rod inserted in the supporting rod sleeve, wherein the shell is a conical barrel, the closed end of the shell is circular on an axial section vertical to the conical barrel, the cross sectional area of the open end of the shell is larger than that of the circular section, the open end is provided with a long shaft, the shell comprises a plurality of trapezoidal grooves formed in at least one side wall of the side wall where the long shaft is located, the outer diameter of the supporting rod sleeve is equivalent to the diameter of the circle, the supporting rod sleeve comprises a body and at least one positioning strip arranged on the side wall of the body, the body is provided with at least one through hole groove along the axial direction of the conical barrel to contain the positioning strip, and two ends of the positioning strip are fixedly arranged in the through hole groove and comprise a strip-shaped part, the support rod comprises two elastic parts and a trapezoidal table, wherein the two elastic parts are arranged on two sides of the strip-shaped part respectively, the trapezoidal table is arranged on the outer side wall of the strip-shaped part, the trapezoidal table is inserted into one of the trapezoidal grooves to position the relative position of the support rod sleeve and the shell, and the diameter of the support rod is equivalent to the inner diameter of the support rod sleeve.

2. The positioning mechanism of claim 1, wherein: the cross section of the opening end is formed by scanning a quadrangle to a circle, the quadrangle comprises two opposite straight sides and two opposite arc sides, and the diameters of the two arc sides are equivalent to the diameter of the circle.

3. The positioning mechanism of claim 1, wherein: the number of the trapezoidal grooves is odd, and the extending direction of one trapezoidal groove in the middle is parallel to the axial direction of the conical cylinder.

4. The positioning mechanism of claim 2, wherein: the trapezoidal groove has 5, is located the extending direction of one of two trapezoidal grooves of a trapezoidal groove both sides in the middle and is 1 degree ~ 10 degrees with the axial contained angle between the toper section of thick bamboo.

5. The positioning mechanism of claim 4, wherein: and an included angle between the extending direction of the other one of the two trapezoidal grooves positioned at the two sides of the middle trapezoidal groove and the axial direction of the conical cylinder is 10-20 degrees.

6. The positioning mechanism of claim 1, wherein: still be provided with at least one tight fit sand grip on the telescopic inside wall of bracing piece, the tight fit sand grip protrusion the telescopic body of bracing piece.

7. The positioning mechanism of claim 6, wherein: the extending direction of the tight fit convex strips is parallel to the axial direction of the cone-shaped cylinder, and 10 tight fit convex strips are arranged at intervals.

8. The positioning mechanism of claim 6, wherein: the tight-fitting convex strips are circular strips arranged on the inner side wall of the supporting rod sleeve.

9. The utility model provides a audio amplifier with positioning mechanism which characterized in that: the sound box with the positioning mechanism comprises the positioning mechanism according to any one of claims 1 to 8, and a bottom cover fixedly arranged on the positioning mechanism, wherein the bottom cover is fixedly connected with the shell.

10. An acoustic enclosure having a positioning mechanism according to claim 9, wherein: the support rod penetrates through the bottom cover.