A hand-cranked lifting speaker stand

Abstract

The utility model discloses a hand -operated lifting type sound box support, including main rod, lifting rod and set up between main rod and lifting rod's connecting piece and the adjusting assembly on connecting piece, adjusting assembly includes worm, turbine and handle, connecting piece is fixed with main rod, worm transversely rotatablely set up in connecting piece, handle drives worm rotation, turbine is engaged with worm, the spacing of the adjacent tooth of turbine is adapted with the adjusting hole of longitudinal being equipped with on lifting rod, when handle drives worm rotation, the tooth of turbine inserts into adjusting hole one by one to drive lifting rod to go up and down, and this lifting adjustment structure makes the lifting speed of lifting rod slow and controllable and has reverse self -locking characteristic, when stopping shaking handle, lifting rod will be locked in the current position immediately, and cannot slide down by the self -weight or external vibration of sound box.

Description

Technical Field

[0001] This utility model relates to the technical field of support brackets, and in particular to a hand-cranked lifting speaker bracket. Background Technology

[0002] Speaker stands are specialized devices used to fix and support audio equipment, widely used in conferences, stage performances, and home entertainment. Their main functions include: first, raising the audio equipment to a suitable height to reduce the obstruction and absorption of sound by the ground or surrounding objects, allowing sound to travel farther and clearer; second, flexibly adjusting the placement height of the speakers according to different usage scenarios and user needs to optimize the listening experience; and third, fixing the speakers in place to prevent them from tipping over due to external forces or their own weight, ensuring the safety of equipment and personnel. Although various lifting support stands exist in current technology, different problems still exist in terms of structural design, ease of use, and stability, as detailed below:

[0003] Patent document 1 (CN220421954U) discloses a speaker stand, the technical solution of which includes a main rod, an adjustment column, a lever-type locking device, and a pneumatic buffer structure. Height locking is achieved through the cooperation of a locking pin and an adjustment hole, and the piston and vent structure slows down the descent speed of the adjustment column, achieving automatic height adjustment and positioning. However, this structure relies on continuous force applied by the user during adjustment, and the buffer mechanism requires high manufacturing precision; improper processing or assembly may affect the performance.

[0004] Patent document 2 (CN221531629U) discloses a speaker stand, which is a three-section telescopic rod structure. The support base has a receiving recess and a fixing post, which can be tightly engaged with the bottom groove of a specific model of speaker. Its technical solution uses an adjustable knob to fix the height of the telescopic rod and utilizes a silicone rubber sleeve to enhance friction and cushioning. While this design improves the specificity and stability of speaker mounting, the telescopic structure relies on friction, resulting in poor load-bearing capacity.

[0005] Patent document 3 (CN220022987U) discloses an adjustable speaker bracket structure, which adjusts the height of the moving part via a controller, reducing the burden of handling and installation for users. Its technical solution also includes side supports and limiting rod structures to enhance stability. However, the electric structure relies on an external power source, limiting its application scenarios and increasing its cost, which hinders widespread adoption. Utility Model Content

[0006] In order to solve the technical problems in the prior art, this utility model provides a hand-cranked lifting speaker bracket that is more convenient to operate and has a stronger load-bearing capacity.

[0007] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a hand-cranked lifting speaker bracket, including a main rod, a lifting rod, a connector disposed between the main rod and the lifting rod, and an adjustment component located on the connector;

[0008] The adjustment assembly includes a worm gear, a turbine, and a crank handle;

[0009] The connector is fixed to the main rod, the worm gear is rotatably disposed in the connector, the crank handle drives the worm gear to rotate, and the turbine meshes with the worm gear;

[0010] The lifting rod is provided with an adjustment hole in the longitudinal direction that is adapted to the spacing between adjacent teeth of the turbine; when the crank drives the worm to rotate, the teeth of the turbine are inserted into the adjustment hole one by one to drive the lifting rod to rise and fall.

[0011] The preferred technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: the connecting member is further provided with a locking component, the locking component including a locking pin, a pin torsion spring, a pin shaft and a button;

[0012] The button is located on one side of the connector and can rotate up and down; the button has a mounting cavity, and the locking pin is connected to the mounting cavity by a pin shaft and has the freedom to rotate upward; a pin torsion spring is provided between the locking pin and the button;

[0013] The lifting rod has multiple locking holes spaced longitudinally on its tube wall, and the inner end of the locking pin engages with the locking holes.

[0014] When the button is turned downwards, the locking pin always exits the locking hole; when the button is turned upwards to reset, the locking pin enters or exits the locking hole after rotating around the pin shaft.

[0015] When the lifting rod moves upward relative to the main rod, the wall of the locking hole acts on the locking pin to make the locking pin rotate upward and squeeze the pin torsion spring; when the lifting rod continues to move upward until the next locking hole is aligned with the locking pin, the pin torsion spring releases elastic potential energy and pushes the locking pin to automatically spring into the next locking hole.

[0016] The preferred technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: the connector is further provided with a pre-tightening component, the pre-tightening component includes an elastic compression block and an adjustment knob, the elastic compression block is used to act radially on the outer surface of the lifting rod, and the adjustment knob is used to adjust the magnitude of the compression force of the compression block on the lifting rod.

[0017] The preferred technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: the pre-tightening component and the locking component are located on the same side of the lifting rod, the locking component is located below the pre-tightening component, and the adjusting component is located on the other side of the lifting rod away from the pre-tightening component and the locking component.

[0018] The preferred technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: the connecting member is provided with a stop block, the stop block is located above the turbine and close to the lifting rod;

[0019] The lower surface of the block has an inclined surface that slopes from the inside out and from bottom to top.

[0020] The preferred technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: the crank includes a vertical connecting rod and a horizontal handle, and the handle and the connecting rod are foldable and connected.

[0021] The outer side of the connecting rod is provided with a storage groove, and the handle is folded and stored in the storage groove.

[0022] The preferred technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: the handle includes a handle shell, a handle rod and a spring, the front end of the handle shell is provided with a small diameter part, and the end side of the connecting rod is provided with a connecting hole adapted to the small diameter part; the connecting hole communicates with the storage groove.

[0023] The connecting hole is provided with a connecting part, one end of the handle is connected to the connecting part, and the other end of the handle extends into the handle housing and is fixedly connected to the handle housing. The handle housing is provided with a spring cavity, and the spring is disposed in the spring cavity.

[0024] After the handle is pushed out of the connecting hole, the spring is compressed, and the handle can rotate around the connecting part to achieve folding.

[0025] The preferred technical solution adopted by this utility model to solve the above-mentioned technical problems is: the connecting rod is provided with spiral reinforcing ribs inside.

[0026] The preferred technical solution adopted by this utility model to solve the above-mentioned technical problem is as follows: the adjustment hole is an oblique hole structure, and the upper edge and lower edge of the oblique hole structure are parallel oblique sides.

[0027] The preferred technical solution adopted by this utility model to solve the above-mentioned technical problems is: the bottom wall of the mounting cavity is inclined from the inside to the outside and from top to top.

[0028] Compared with existing technologies, the advantages of this invention are: this lifting and adjusting structure allows for slow and controllable lifting speed of the lifting rod, enabling very precise height adjustment. Furthermore, the worm-turbine mechanism has a reverse self-locking characteristic; the worm can only drive the worm, and the worm cannot drive the worm in the reverse direction. This means that when the crank stops, the lifting rod is immediately locked in its current position and cannot slide down due to the speaker's own weight or external vibrations. The worm's teeth directly insert into the adjusting hole of the lifting rod, forming a multi-point, rigid mechanical connection to transmit the load. Compared to brackets that rely solely on friction for locking, this structure can withstand heavier speakers, has higher structural strength, and offers better safety. Attached Figure Description

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the present invention. Furthermore, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated depictions, and the drawings are not necessarily drawn to scale.

[0030] Figure 1 This is a schematic diagram of a hand-cranked lifting speaker stand and a speaker.

[0031] Figure 2 This is a schematic diagram of a hand-cranked, height-adjustable speaker stand.

[0032] Figure 3 A cross-sectional view of a hand-cranked lifting speaker stand;

[0033] Figure 4 An exploded view of a hand-cranked, height-adjustable speaker stand;

[0034] Figure 5 A schematic diagram of the lifting rod of a hand-cranked lifting speaker stand. Figure 1 ;

[0035] Figure 6 A schematic diagram of the lifting rod of a hand-cranked height-adjustable speaker stand. Figure 2 ;

[0036] Figure 7 This is a schematic diagram of the folded handle of a hand-cranked height-adjustable speaker stand. Detailed Implementation

[0037] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0038] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it will not be further defined and explained in subsequent figures.

[0039] In the description of this utility model, it should be noted that the terms "upper," "lower," "front," "rear," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the die-cast part of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Similarly, "first" and "second" are only for ease of understanding and have no other directional meaning, and cannot be considered as limitations on this utility model.

[0040] like Figure 1-2 As shown, this embodiment provides a hand-cranked lifting speaker bracket, including a main rod 1, a lifting rod 2, a connector 3 disposed between the main rod 1 and the lifting rod 2, and an adjustment component located on the connector 3.

[0041] like Figure 3-4 As shown, the adjusting assembly includes a worm gear 4, a turbine 5, and a crank handle 6. The connecting piece 3 is fixed to the main rod 1. The worm gear 4 is rotatably mounted laterally within the connecting piece 3, and the turbine 5 is rotatably mounted within the connecting piece via a rotating shaft 19. The crank handle 6 drives the worm gear 4 to rotate, and the turbine 5 meshes with the worm gear 4.

[0042] like Figure 3-4 As shown in Figure 5, the lifting rod 2 has longitudinally arranged adjustment holes 6 that correspond to the spacing between adjacent teeth 7 of the turbine 5. When the crank 6 drives the worm gear 4 to rotate, the teeth 7 of the turbine 5 are inserted into the adjustment holes 6 one by one to drive the lifting rod 2 to rise and fall.

[0043] When the user cranks the handle 6 clockwise or counterclockwise, it drives the worm gear 4 to rotate. The rotation of the worm gear 4 drives the meshing turbine 5 to rotate. Since the teeth of the turbine 5 are designed to insert into the adjustment holes 6 on the lifting rod 2 one by one, the rotational motion of the turbine 5 is converted into the linear lifting motion of the lifting rod 2. Every time the worm gear 4 rotates a certain angle, one tooth of the turbine 5 engages or disengages from an adjustment hole 6, thereby realizing the step-by-step lifting of the lifting rod 2.

[0044] This height adjustment structure allows for slow and controllable raising and lowering of the lifting rod 2, enabling very precise height adjustment. Furthermore, the worm gear 4-turbine 5 mechanism has a reverse self-locking characteristic; the turbine 5 can only be driven by rotating the worm gear 4, and the turbine 5 cannot drive the worm gear 4 in the reverse direction. This means that when the crank handle 6 is stopped, the lifting rod 2 is immediately locked in its current position and cannot slide down due to the speaker's own weight or external vibrations. The teeth of the turbine 5 directly insert into the adjustment hole 6 of the lifting rod 2, forming a multi-point, rigid mechanical connection to transmit the load. Compared to brackets that rely solely on friction for locking, this structure can withstand heavier speakers, has higher structural strength, and offers better safety.

[0045] like Figure 3-4 As shown in Figure 6, the connector 3 is also provided with a locking assembly, which includes a locking pin 8, a pin torsion spring 9, a pin shaft 10, and a button 11. The button 11 is rotatably mounted on the connector via a reset torsion spring 33.

[0046] Button 11 is located on one side of connector 3 and can rotate up and down. Button 11 has a mounting cavity, and locking pin 8 is connected to the mounting cavity through pin 10 and has the freedom to rotate upward. A pin torsion spring 9 is provided between locking pin 8 and button 11.

[0047] Multiple locking holes 12 are longitudinally spaced on the tube wall of the lifting rod 2, and the inner end of the locking pin 8 is engaged with the locking hole 12.

[0048] When button 11 is turned downwards, locking pin 8 always exits locking hole 12. When button 11 is turned upwards to reset, locking pin 8 enters or exits locking hole 12 after rotating around pin shaft 10.

[0049] When the lifting rod 2 moves upward relative to the main rod 1, the wall action of the locking hole 12 causes the locking pin 8 to rotate upward and compress the pin torsion spring 9. When the lifting rod 2 continues to move upward until the next locking hole 12 is aligned with the locking pin 8, the pin torsion spring 9 releases its elastic potential energy, pushing the locking pin 8 to automatically spring into the next locking hole 12.

[0050] When the support needs to be raised, the lifting rod 2 moves upward relative to the main rod 1. At this time, the user does not need to operate the button 11; they only need to drive the crank 6 through the adjustment component to achieve the upward movement. As the lifting rod 2 moves upward, the lower edge of the locking hole 12 contacts and pushes against the inclined surface or end of the locking pin 8, forcing the locking pin 8 to overcome the force of the torsion spring 9 and rotate upward, thus disengaging from the current locking hole 12. The torsion spring 9 is compressed and accumulates elastic potential energy.

[0051] When the lifting rod 2 continues to move upward until the next locking hole 12 is aligned with the locking pin 8, the pin torsion spring 9 releases its elastic potential energy, pushing the locking pin 8 to automatically spring into the next locking hole 12, thereby achieving locking.

[0052] When the support needs to be lowered, the user must first manually turn button 11 downwards. The locking pin 8 moves with button 11, causing its inner end to completely disengage from the locking hole 12. At this point, the lifting rod 2 can move downwards freely.

[0053] like Figure 3-4 As shown, the connector 3 is also equipped with a pre-tightening assembly, which includes an elastic compression block 13 and an adjustment knob 14. The elastic compression block 13 acts radially on the outer surface of the lifting rod 2, and the adjustment knob 14 is used to adjust the magnitude of the compression force exerted by the compression block on the lifting rod 2. After prolonged use, a small gap may develop between the lifting rod 2 and the connector 3 due to wear, causing slight vibration of the speaker. By applying an adjustable radial pressure through the pre-tightening assembly, these gaps can be effectively eliminated, ensuring that the lifting rod 2 remains stable at any height, thus eliminating resonance and noise.

[0054] like Figure 1-4 As shown, the pre-tightening assembly and locking assembly are located on the same side of the lifting rod 2, with the locking assembly located below the pre-tightening assembly. The adjusting assembly is located on the other side of the lifting rod 2, away from the pre-tightening and locking assemblies. This layout ensures balanced force distribution on both sides of the connecting member 3. One side is responsible for the main lifting transmission, while the other side is responsible for auxiliary locking and eliminating gaps. This avoids the structural bulk and uneven force distribution caused by stacking all mechanisms on one side. Furthermore, users and maintenance personnel can clearly distinguish between the adjusting area, locking area, and pre-tightening area, resulting in clear operating logic and convenient maintenance.

[0055] like Figure 3-4 As shown in Figure 7, a stop block 15 is provided on the connecting member 3. The stop block 15 is located above the turbine 5 and close to the lifting rod 2. The lower surface of the stop block 15 has an inclined surface 150 that slopes from the inside out and from bottom to top. The stop block 15 serves a decorative function, reducing the gap between the connecting member 3 and the lifting rod, and providing dust and moisture protection. At the same time, when the teeth of the turbine 5 exit from the adjusting hole 6, the inclined surface of the stop block 15 guides the teeth of the turbine 5 to smoothly and easily disengage from the adjusting hole 6, preventing jamming or wear caused by interference between the teeth and the edge of the hole, thus improving the smoothness of operation and the durability of the components.

[0056] like Figure 1-4 As shown in Figures 7 and 8, preferably, the crank handle 6 includes a vertical connecting rod 61 and a horizontal handle 62, and the handle 62 is foldably connected to the connecting rod 61. The outer side of the connecting rod 61 is provided with a storage groove 60, and the handle 62 is stored in the storage groove 60 after folding.

[0057] like Figure 1-4As shown in Figure 7, the handle 62 includes a handle housing 21, a handle rod 22, and a spring 23. The front end of the handle housing 21 has a small diameter portion 210, and the end side of the connecting rod 61 has a connecting hole 211 that is adapted to the small diameter portion 210. The connecting hole communicates with the storage groove 60. A connecting part 20 is provided in the connecting hole, one end of the handle rod 22 is connected to the connecting part 20, and the other end of the handle rod 22 extends into the handle housing 21 and is fixedly connected to the handle housing 21. The handle housing 21 has a spring 23 cavity, and the spring 23 is disposed in the spring 23 cavity.

[0058] As can be seen, the handle 62 folds through an elastic telescopic structure. The small-diameter portion 210 at the front end of the handle housing 21 is inserted into the connecting hole 211 at the end of the connecting rod 61. Applying force to the handle 62 drives the crank handle 6. When the handle 62 is pulled outward, the handle housing 21 exits the connecting hole outward, and the spring 23 is compressed, allowing it to rotate and fold around the connecting part. When the handle 62 is removed from the storage slot 60 and returned to its initial position, after release, the spring 23 pushes the handle housing 21 back to its original position, achieving locking.

[0059] This folding mechanism reduces the overall packaging volume and transportation space of the stand, facilitating logistics and warehousing. When not in use, retracting the handle 6 prevents it from accidentally snagging on foreign objects or causing collision injuries, improving product safety and aesthetics. The spring-loaded telescopic rotating structure 23 enables one-button operation; the folding and unfolding actions are crisp and clean, with a secure lock, providing a good user experience.

[0060] Preferably, the connecting rod 61 has a spiral reinforcing rib 610 inside. The crank 6 needs to withstand a certain torque and bending moment when rotating. The internal spiral reinforcing rib can significantly improve the torsional and bending stiffness of the connecting rod 61, prevent it from deforming or breaking under heavy operation, and ensure transmission efficiency and product durability.

[0061] like Figure 5 As shown, the adjusting hole 6 has an oblique hole structure, with the upper and lower edges of the oblique hole structure being parallel bevels. This provides a certain guiding effect, making the insertion and withdrawal of the teeth smoother, effectively preventing plastic deformation and wear of the hole and teeth, and significantly extending the service life of the turbine 5 and the lifting rod 2.

[0062] like Figure 6 As shown, preferably, the locking hole 12 is an elongated waist-shaped hole in the height direction, which provides a guiding space for the entry of the locking pin 8 and reduces the risk of jamming due to slight misalignment.

[0063] like Figure 3 As shown, the bottom wall of the mounting cavity slopes upwards from the inside out. This facilitates the installation of the pin torsion spring 9 and provides a certain amount of swing space for the locking pin 8, thereby achieving adaptive engagement with the locking hole 12 of the waist-shaped hole.

[0064] like Figure 4 As shown, the connector 3 is formed by the mating of the front cover 31 and the rear cover 32, and is fixed and held tightly to the main rod 1 by screws. A limiting ring restricts the relative displacement between the connector 3 and the main rod 1. A bushing 18 is also provided between the connector 3 and the lifting rod 2.

[0065] The above description of a hand-cranked lifting speaker bracket provided by this utility model is provided only to help understand this utility model and its core ideas. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A hand-cranked, height-adjustable speaker stand, characterized in that: It includes a main rod, a lifting rod, a connector disposed between the main rod and the lifting rod, and an adjustment assembly located on the connector; The adjustment assembly includes a worm gear, a turbine, and a crank handle; The connector is fixed to the main rod, the worm gear is rotatably disposed in the connector, the crank handle drives the worm gear to rotate, and the turbine meshes with the worm gear; The lifting rod is provided with an adjustment hole in the longitudinal direction that is adapted to the spacing between adjacent teeth of the turbine; when the crank drives the worm to rotate, the teeth of the turbine are inserted into the adjustment hole one by one to drive the lifting rod to rise and fall.

2. The hand-cranked lifting speaker bracket according to claim 1, characterized in that: The connector is also provided with a locking assembly, which includes a locking pin, a pin torsion spring, a pin shaft, and a button; The button is located on one side of the connector and can rotate up and down; the button has a mounting cavity, and the locking pin is connected to the mounting cavity by a pin shaft and has the freedom to rotate upward; a pin torsion spring is provided between the locking pin and the button; The lifting rod has multiple locking holes spaced longitudinally on its tube wall, and the inner end of the locking pin engages with the locking holes. When the button is turned downwards, the locking pin always retracts from the locking hole; When the button is rotated upwards to reset, the locking pin enters or exits the locking hole after rotating around the pin shaft; When the lifting rod moves upward relative to the main rod, the wall of the locking hole acts on the locking pin to make the locking pin rotate upward and compress the pin torsion spring; When the lifting rod continues to move upward until the next locking hole aligns with the locking pin, the pin torsion spring releases its elastic potential energy, pushing the locking pin to automatically spring into the next locking hole.

3. The hand-cranked lifting speaker bracket according to claim 2, characterized in that: The connector is also provided with a pre-tightening component, which includes an elastic compression block and an adjustment knob. The elastic compression block is used to act radially on the outer surface of the lifting rod, and the adjustment knob is used to adjust the magnitude of the compression force exerted by the compression block on the lifting rod.

4. A hand-cranked lifting speaker stand according to claim 3, characterized in that: The pre-tightening assembly and the locking assembly are located on the same side of the lifting rod, the locking assembly is located below the pre-tightening assembly, and the adjusting assembly is located on the other side of the lifting rod away from the pre-tightening assembly and the locking assembly.

5. A hand-cranked lifting speaker stand according to claim 1, characterized in that: The connector is provided with a stop block, which is located above the turbine and close to the lifting rod; The lower surface of the block has an inclined surface that slopes from the inside out and from bottom to top.

6. A hand-cranked lifting speaker stand according to claim 1, characterized in that: The crank includes a vertical connecting rod and a horizontal handle, and the handle is foldably connected to the connecting rod. The outer side of the connecting rod is provided with a storage groove, and the handle is folded and stored in the storage groove.

7. A hand-cranked lifting speaker bracket according to claim 6, characterized in that: The handle includes a handle housing, a handle rod, and a spring. The front end of the handle housing has a small diameter portion, and the end side of the connecting rod has a connecting hole that matches the small diameter portion. The connecting hole communicates with the storage groove. The connecting hole is provided with a connecting part, one end of the handle is connected to the connecting part, and the other end of the handle extends into the handle housing and is fixedly connected to the handle housing. The handle housing is provided with a spring cavity, and the spring is disposed in the spring cavity. After the handle is pushed out of the connecting hole, the spring is compressed, and the handle can rotate around the connecting part to achieve folding.

8. A hand-cranked lifting speaker bracket according to claim 6, characterized in that: The connecting rod has spiral reinforcing ribs inside.

9. A hand-cranked lifting speaker stand according to claim 1, characterized in that: The adjustment hole is an oblique hole structure, and the upper and lower edges of the oblique hole structure are parallel bevels.

10. A hand-cranked lifting speaker stand according to claim 2, characterized in that: The bottom wall of the mounting cavity slopes upwards from the inside out.

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