Lifting mechanism for loudspeaker

Abstract

The utility model relates to a lifting mechanism for a loudspeaker, which comprises a shell, a lifting part and a driving assembly, a cavity is formed in the shell, the lifting part slides in a chute on the inner circumferential wall of the cavity through a sliding block on the lifting part to realize lifting, and the driving assembly transmits power through a worm, a gear set and a rack to push the lifting part to perform lifting motion. Therefore, the loudspeaker assembly is hidden in the cavity or exposed to the outside through the opening. The guide mode of the sliding groove and the sliding block is adopted, a traditional guide rod structure is replaced, the requirement for precision machining is reduced, and manufacturing cost is reduced. Meanwhile, the design structure of the sliding groove and the sliding block is compact, the needed installation space is small, the grooving size of an installation part is reduced, and the rigidity and the modal performance of the whole structure are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of lifting technology, more particularly to a lifting mechanism for loudspeaker. BACKGROUND

[0002] In the related art, there are some lifting mechanisms for loudspeakers, most of which adopt a scheme of gear and rack transmission plus guide rod guiding. However, the guide rod itself needs to be precisely machined, resulting in a high cost of a single piece and increasing the overall manufacturing cost of the product. Moreover, the guide rod needs a large installation space, and the corresponding installation part has a large slot, which not only increases the design difficulty but also may affect the modal (structural vibration characteristics) of the installation part, reducing the rigidity and stability of the overall structure. SUMMARY

[0003] The utility model aims at providing a lifting mechanism for loudspeaker, which adopts a guiding mode of sliding groove and sliding block, replaces the traditional guide rod structure, reduces the need for precision machining, and reduces the manufacturing cost. At the same time, the design structure of the sliding groove and the sliding block is compact, the required installation space is small, the slot size of the installation part is reduced, and the rigidity and modal performance of the overall structure are improved.

[0004] A lifting mechanism for loudspeaker, comprising:

[0005] A housing having a cavity extending axially formed inside, one end of the cavity being provided with an opening, and at least one sliding groove being provided on the inner peripheral wall of the cavity, the sliding groove extending from the opening to the inside of the cavity;

[0006] A lifting part connected to the loudspeaker assembly, the lifting part being provided with a sliding block matched with the sliding groove, the sliding block being slidably embedded in the sliding groove;

[0007] A drive assembly provided in the cavity, comprising a drive member, a gear set and a rack, the output end of the drive member being sleeved with a worm, the gear set being engaged with the worm and the rack respectively, one end of the rack being connected to the lifting part, the drive member driving the gear set to rotate through the worm, the gear set driving the rack to move axially, and then pushing the lifting part to move up and down along the sliding groove, so as to realize the hiding of the loudspeaker assembly in the cavity or the exposure of the loudspeaker assembly to the outside through the opening.

[0008] In the above technical solution, when the user needs to switch the loudspeaker assembly from the hidden state to the exposed state, the driving member is started, and the output end of the driving member drives the worm to rotate. The rotation of the worm drives the gear set engaged therewith to rotate, and the gear set transmits the rotary motion to the rack. The rack moves axially under the drive of the gear set, and since the rack is fixedly connected to the lifting part, the movement of the rack pushes the lifting part to move up and down along the sliding groove. The sliding block on the lifting part is embedded in the sliding groove in the inner wall of the shell, and the sliding groove guides and limits the movement of the sliding block, ensuring that the lifting part remains stable during movement and avoiding shaking or deviation. When the lifting part moves upward along the sliding groove, the loudspeaker assembly is exposed outside from the cavity through the opening; when the lifting part moves downward, the loudspeaker assembly is retracted into the cavity, achieving hiding.

[0009] Further, the number of the sliding grooves is three, and two of the sliding grooves are oppositely arranged.

[0010] In the above technical solution, among the three sliding grooves, two sliding grooves are oppositely arranged, and the third sliding groove is located on the other side, forming a stable triangular support structure. This layout can evenly distribute the stress of the lifting part and avoid unstable movement or jamming caused by uneven stress on one side.

[0011] Further, the side of the sliding block facing the sliding groove is attached with a spring sheet.

[0012] In the above technical solution, the spring sheet has a certain elasticity, and by being attached to the side of the sliding block in contact with the sliding groove, the spring sheet is compressed and deformed when the sliding block enters the sliding groove, thereby providing an elastic force to eliminate the matching gap between the sliding block and the sliding groove. At the same time, when the sliding block slides in the sliding groove, friction will occur between the spring sheet and the sliding groove. The friction can offset the gravity during the descent of the lifting mechanism, thereby reducing the downward pressure on the rack and maintaining the stable engagement between the gear set and the rack, preventing unstable engagement caused by gravity.

[0013] Further, the cavity is provided with a mounting seat, and the driving assembly is arranged on the mounting seat.

[0014] In the above technical solution, the mounting seat provides a stable mounting basis for the driving assembly, and through the fixation of the mounting seat, the driving assembly will not shake or displace during operation, thereby improving the running stability and reliability of the mechanism.

[0015] Further, a guide groove extending in the axial direction of the rack is arranged on the rack, a guide block extending outward from the mounting seat is arranged, and an end of the guide block away from the mounting seat extends into the guide groove.

[0016] In the above technical solution, the rack is provided with a guide groove extending along the axial direction, and the guide block extending from the mounting seat is inserted into the guide groove. The cooperation of the guide groove and the guide block ensures that the rack moves linearly along the axial direction during movement, avoiding the rack from deviating or rotating.

[0017] Further, the limit switch is arranged adjacent to one of the sliding grooves and located at the two ends of the sliding path of the sliding block.

[0018] In the above technical solution, the limit switch is used to detect the movement position of the sliding block. When the sliding block moves to the two ends of the sliding groove, the limit switch triggers a signal to stop the work of the driving member. This design can accurately control the movement range of the lifting part, prevent the sliding block from moving beyond the range, and avoid damaging the mechanism.

[0019] Further, the speaker assembly comprises a mounting part and a speaker body, and the mounting part is provided with a mounting hole, and the speaker body is connected with the mounting part through the mounting hole.

[0020] In the above technical solution, the mounting part serves as a connecting component between the speaker body and the lifting part, and plays a role in fixing and supporting the speaker body. When the lifting part rises and falls along the sliding groove, it drives the mounting part and the speaker body to move together, realizing the hiding or exposure of the speaker assembly.

[0021] Further, the lifting part is provided with a plurality of clamping grooves, and the side of the mounting part facing the lifting part is provided with a plurality of clamping pieces, and the clamping pieces are inserted into the clamping grooves one by one.

[0022] In the above technical solution, through the cooperation of the clamping groove and the clamping piece, the mounting part can be quickly installed on the lifting part without using additional tools or fasteners. When it is necessary to maintain or replace the speaker assembly, the clamping piece can be pulled out of the clamping groove, simplifying the maintenance process.

[0023] Further, the shell comprises a base and a cover, and the base and the cover are detachably connected and form the cavity.

[0024] In the above technical solution, the detachable connection of the base and the cover enables the internal components (such as the driving assembly and the lifting part) of the shell to be conveniently installed, debugged and maintained. When it is necessary to replace or repair the internal components, the cover only needs to be disassembled, without damaging the overall structure of the shell.

[0025] Compared with the prior art, the beneficial effects of this utility model are as follows: When the user needs to switch the speaker assembly from a hidden state to an exposed state, the drive unit is activated, and the output end of the drive unit drives the worm gear to rotate. The rotation of the worm gear drives the gear set meshing with it to rotate, and the gear set transmits the rotational motion to the rack. The rack moves axially under the drive of the gear set. Since the rack is fixedly connected to the lifting part, the movement of the rack pushes the lifting part to move up and down along the slide groove. The slider on the lifting part is embedded in the slide groove on the inner peripheral wall of the housing. The slide groove guides and limits the movement of the slider, ensuring that the lifting part remains stable during movement and avoiding shaking or deviation. When the lifting part moves upward along the slide groove, the speaker assembly is exposed to the outside through the opening in the cavity; when the lifting part moves downward, the speaker assembly retracts into the cavity, achieving concealment. Attached Figure Description

[0026] Figure 1 This is a perspective view of the housing according to an embodiment of the present utility model.

[0027] Figure 2 This is a schematic diagram of the lifting mechanism for a loudspeaker according to an embodiment of the present invention.

[0028] Figure 3 This is a perspective view of the speaker lifting mechanism according to an embodiment of the present invention.

[0029] Figure 4 This is a schematic diagram of the structure of the driving component according to an embodiment of the present utility model.

[0030] Figure 5 This is a schematic diagram of the internal structure of the housing in an embodiment of the present invention.

[0031] Figure 6 This is an exploded structural diagram of the lifting part and speaker assembly according to an embodiment of the present invention.

[0032] Explanation of icon numbers

[0033] 1. Housing; 101. Cavity; 102. Opening; 103. Slide groove; 104. Mounting base; 1041. Guide block; 105. Base; 106. Outer cover;

[0034] 2. Lifting unit; 201. Slider; 202. Slot;

[0035] 3. Speaker assembly; 301. Mounting part; 3011. Mounting hole; 3012. Snap-fit ​​part; 302. Speaker body;

[0036] 4. Drive assembly; 401. Drive component; 402. Gear set; 4021. Turbine; 4022. Transmission gear; 403. Rack; 4031. Guide groove; 404. Worm gear;

[0037] 5, the bullet; 6, limit switch. DETAILED DESCRIPTION

[0038] The loudspeaker lifting mechanism according to the present application will be further described below in connection with specific embodiments and drawings. The preferred embodiments of the present application are shown in the drawings. However, the present application can be realized in many different forms and is not limited to the embodiments described herein.

[0039] Please refer to Figures 1 to 4 In a preferred embodiment, the loudspeaker lifting mechanism according to the present application comprises:

[0040] The shell 1 has a cavity 101 extending axially formed inside, one end of the cavity 101 is provided with an opening 102, and at least one sliding groove 103 is provided on the inner peripheral wall of the cavity 101, the sliding groove 103 extends from the opening to the inside of the cavity 101;

[0041] The lifting part 2 is connected with the loudspeaker assembly 3, and the lifting part 2 is provided with a sliding block 201 matched with the sliding groove 103, the sliding block 201 is slidably embedded in the sliding groove 103;

[0042] The driving assembly 4 is arranged in the cavity 101, comprising a driving part 401, a gear set 402 and a rack 403, the output end of the driving part 401 is sleeved with a worm 404, the gear set 402 is respectively engaged with the worm 404 and the rack 403, one end of the rack 403 is connected with the lifting part 2, the driving part 401 drives the gear set 402 to rotate through the worm 404, the gear set 402 drives the rack 403 to move axially, and then pushes the lifting part 2 to move up and down along the sliding groove 103, so as to realize the hiding of the loudspeaker assembly 3 in the cavity 101 or the exposure of the loudspeaker assembly 3 to the outside through the opening 102.

[0043] In actual application, when the user needs to switch the loudspeaker assembly 3 from the hidden state to the exposed state, the driving member 401 is started, and the output end of the driving member 401 drives the worm 404 to rotate. The rotation of the worm 404 drives the gear set 402 engaged with the worm 404 to rotate, and the gear set 402 transmits the rotary motion to the rack 403. The rack 403 moves axially under the drive of the gear set 402, and since the rack 403 is fixedly connected with the lifting part 2, the movement of the rack 403 pushes the lifting part 2 to move up and down along the sliding groove 103. The sliding block 201 on the lifting part 2 is embedded in the sliding groove 103 of the inner wall of the shell 1, and the sliding groove 103 plays a guiding and limiting role on the movement of the sliding block 201, so as to ensure that the lifting part 2 remains stable during the movement and avoids shaking or deviation. When the lifting part 2 moves upward along the sliding groove 103, the loudspeaker assembly 3 is exposed outside from the cavity 101 through the opening 102; when the lifting part 2 moves downward, the loudspeaker assembly 3 is retracted into the cavity 101, and the hiding is realized. The lifting mechanism for the loudspeaker of the utility model adopts the guiding mode of the sliding groove 103 and the sliding block 201, replaces the traditional guide rod structure, reduces the demand for precision machining, and reduces the manufacturing cost. At the same time, the design structure of the sliding groove 103 and the sliding block 201 is compact, the required installation space is small, the slot size of the installation part is reduced, and the rigidity and modal performance of the overall structure are improved.

[0044] It should be noted that the gear set 402 includes a turbine 4021 and a transmission gear 4022, the turbine 4021 is engaged with the worm 404, and the transmission gear 4022 is engaged with the rack 403, so as to realize the efficient transmission of power from the driving member 401 to the rack 403. At the same time, through the self-locking function of the worm 404 and the turbine 4021, the mechanism is prevented from moving accidentally in the non-working state. In particular, the engagement of the worm 404 and the turbine 4021 has a high transmission ratio, which can convert the high-speed rotation of the driving member 401 into low-speed high-torque output of the turbine 4021. After the driving member 401 is started, the worm 404 rotates and drives the turbine 4021 to rotate. The turbine 4021 drives the transmission gear 4022 to rotate, and the transmission gear 4022 further drives the rack 403 to move axially. The movement of the rack 403 pushes the lifting part 2 to move up and down along the sliding groove 103, so as to realize the hiding or exposure of the loudspeaker assembly 3.

[0045] Please refer to Figure 5, the number of the sliding grooves 103 is three, and two of the sliding grooves 103 are oppositely arranged. Among the three sliding grooves 103, two of the sliding grooves 103 are oppositely arranged, and the third sliding groove 103 is located on the other side to form a stable triangular support structure. This layout can uniformly distribute the stress of the lifting part and avoid the phenomenon of unstable movement or jamming caused by uneven stress on one side. Specifically, in the lifting mechanism for the loudspeaker, the number of the sliding grooves 103 is set to three, and two of the sliding grooves 103 are designed to be oppositely arranged. This design means that on the inner circumferential wall of the shell 1, two sliding grooves 103 will be located on both sides of the cavity 101, and their extension directions and positions are corresponding. The third sliding groove 103 can be located on the other side of the cavity 101 or other suitable positions to provide additional support and stability. When the lifting part 2 performs lifting movement, the sliding block 201 thereon will simultaneously cooperate with the three sliding grooves 103. Since two of the sliding grooves 103 are oppositely arranged, they can provide more balanced and stable support force for the lifting part 2 to prevent it from deviating or tilting during lifting.

[0046] Please refer to Figure 6 In some embodiments of the present application, the side of the sliding block 201 facing the sliding groove 103 is attached with a spring sheet 5. The spring sheet 5 is attached to the side of the sliding block 201 in contact with the sliding groove 103, and by utilizing its own elastic properties, it will be compressed and deformed when the sliding block 201 enters the sliding groove 103. The elastic force generated by this compression and deformation not only fills the small gap between the sliding block 201 and the sliding groove 103, ensuring a tight fit, but also provides additional support, making the movement of the sliding block 201 in the sliding groove 103 more stable. At the same time, due to the elastic deformation of the spring sheet 5, it produces a tight contact with the side wall of the sliding groove 103. When the sliding block 201 slides in the sliding groove 103, this tight contact between the spring sheet 5 and the sliding groove 103 generates friction. This friction is particularly important during the descent of the lifting mechanism, as it can help offset the downward force caused by gravity. During the descent of the lifting mechanism, gravity will cause the rack 403 to be subjected to downward pressure, which may affect the stability of the meshing between the gear set 402 and the rack 403. However, the friction generated between the spring sheet 5 and the sliding groove 103 can effectively offset part of the gravity, thereby reducing the downward pressure on the rack 403. This action helps to maintain the stable meshing between the gear set 402 and the rack 403, preventing the meshing instability problem caused by gravity.

[0047] Please refer to Figure 2The cavity 101 is provided with a mounting seat 104, and the driving assembly 4 is arranged on the mounting seat 104. The mounting seat 104 provides a stable mounting basis for the driving assembly 4, and the driving assembly 4 will not shake or displace during operation through the fixation of the mounting seat 104, thereby improving the operation stability and reliability of the mechanism.

[0048] Meanwhile, the rack 403 is provided with a guide groove 4031 extending along the axial direction thereof, and the mounting seat 104 extends outwardly to form a guide block 1041, and an end of the guide block 1041 away from the mounting seat 104 extends into the guide groove 4031. When the driving assembly 4 starts to work, the driving member 401 drives the rack 403 to move through the worm 404 and the gear set 402. Due to the cooperation between the guide block 1041 and the guide groove 4031, the rack 403 will be guided and constrained by the guide block 1041 during movement, thereby ensuring the smooth movement of the rack 403 in the correct direction. This design not only improves the stability of the movement of the rack 403, but also helps to reduce noise and wear caused by deviation or shaking.

[0049] Further, please refer to Figure 5 The utility model also includes limit switches 6, which are arranged adjacent to one of the sliding grooves 103 and are located at both ends of the movement path of the sliding block 201. The limit switches 6 are used to detect the movement position of the sliding block 201, and when the sliding block 201 moves to the starting end or the ending end of the sliding groove 103, it will come into contact with the limit switches 6 or approach to a distance sufficient to trigger the switch. Once the limit switches 6 are triggered, they will send a signal to the control system, indicating that the sliding block 201 has reached the predetermined position. After receiving this signal, the control system will immediately take measures to stop the operation of the driving assembly 4, thereby preventing the sliding block 201 from continuing to move and possibly causing damage or failure.

[0050] Please refer to Figure 6 The loudspeaker assembly 3 includes a mounting part 301 and a loudspeaker body 302, and the mounting part 301 is provided with a mounting hole 3011, and the loudspeaker body 302 is connected with the mounting part 301 through the mounting hole 3011. The mounting part 301 serves as a connecting component between the loudspeaker body 302 and the lifting part 2, and plays a role in fixing and supporting the loudspeaker body 302. When the lifting part 2 lifts along the sliding groove 103, the mounting part 301 and the loudspeaker body 302 move together, realizing the hiding or exposure of the loudspeaker assembly 3.

[0051] Further, the lifting part 2 is provided with a plurality of clamping grooves 202, and the mounting part 301 is provided with a plurality of clamping pieces 3012 on the side facing the lifting part 2, and the clamping pieces 3012 correspondingly extend into the clamping grooves 202. Through the cooperation of the clamping grooves 202 and the clamping pieces 3012, the mounting part 301 can be quickly mounted on the lifting part 2 without the need for additional tools or fasteners. In actual operation, the user only needs to align the clamping pieces 3012 on the mounting part 301 with the clamping grooves 202 on the lifting part 2, and then gently push or rotate the mounting part 301, so that the clamping pieces 3012 can be completely inserted into the clamping grooves 202 and locked in place. When maintenance or replacement of the loudspeaker assembly 3 is required, the clamping pieces 3012 can be pulled out of the clamping grooves 202, simplifying the maintenance process.

[0052] Please refer to Figure 1 The shell 1 comprises a base 105 and a cover 106, and the base 105 and the cover 106 are detachably connected and form a cavity 101. The detachable connection of the base 105 and the cover 106 enables the internal components (such as the driving assembly 4 and the lifting part 2) of the shell 1 to be conveniently installed, debugged and maintained. When internal components need to be replaced or repaired, the cover 106 only needs to be disassembled, without the need to damage the overall structure of the shell 1.

[0053] In the description of the present application, it should be understood that the terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0054] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0055] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0056] Although the description of the present application is made in combination with the above specific embodiments, it is obvious that many substitutions, modifications and changes can be made according to the above content by those skilled in the art. Therefore, all such substitutions, modifications and changes are included in the spirit and scope of the appended claims.

Claims

1. A lifting mechanism for a loudspeaker, characterized by The utility model relates to a speaker hiding device, including: A shell is internally formed with a cavity extending in the axial direction, one end of the cavity is provided with an opening, and at least one chute is arranged on the inner peripheral wall of the cavity and extends from the opening to the inside of the cavity; A lifting part is connected with a speaker assembly, and a sliding block matched with the chute is arranged on the lifting part and slidably embedded in the chute; A drive assembly is arranged in the cavity and includes a drive part, a gear set and a rack, a worm is sleeved on the output end of the drive part, the gear set is respectively meshed with the worm and the rack, one end of the rack is connected with the lifting part, the drive part drives the gear set to rotate through the worm, the gear set drives the rack to move in the axial direction, and the lifting part is pushed to move up and down along the chute to realize the hiding or exposure of the speaker assembly in or outside the cavity through the opening.

2. The elevating mechanism for a speaker according to claim 1, wherein The number of the chutes is three, and two of the chutes are oppositely arranged.

3. The elevating mechanism for a speaker according to claim 1, wherein A spring sheet is attached to the side of the sliding block facing the chute.

4. The elevating mechanism for a speaker according to claim 1, wherein An installation seat is arranged in the cavity, and the drive assembly is arranged on the installation seat.

5. The elevating mechanism for a speaker according to claim 4, wherein A guide groove extending in the axial direction of the rack is arranged on the rack, and a guide block extending outward from the installation seat is arranged, and one end of the guide block away from the installation seat extends into the guide groove.

6. The elevating mechanism for a speaker according to claim 1, wherein A limit switch is also arranged adjacent to one of the chutes and located at the two ends of the moving path of the sliding block.

7. The elevating mechanism for a speaker according to claim 1, wherein The speaker assembly includes a mounting part and a speaker body, the mounting part is provided with a mounting hole, and the speaker body is connected with the mounting part through the mounting hole.

8. The elevating mechanism for a speaker according to claim 7, wherein A plurality of clamping grooves are arranged on the lifting part, and a plurality of clamping pieces are arranged on the side of the mounting part facing the lifting part, and the clamping pieces correspondingly extend into the clamping grooves.

9. The elevating mechanism for a speaker according to claim 1, wherein The shell includes a base and a cover, and the base and the cover are detachably connected and form the cavity.

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