Knob type limiting device and stage lamp with same

Abstract

The utility model discloses a knob type limiting device and a stage lamp with the knob type limiting device, the knob type limiting device comprises a seat body, a lock disc and a lock shaft, one end of the lock shaft is provided with at least one guide protrusion in the circumferential direction, the seat body is provided with a through hole for the other end of the lock shaft to penetrate through, and the lock shaft can directly or indirectly act on the lock disc after penetrating through the seat body; an annular protrusion provided with at least one set of first concave position and second concave position is arranged on the side face, close to the guide protrusion, of the base body, the bottom of the first concave position is closer to the lock disc than the bottom of the second concave position, and the elastic piece forces the guide protrusion to abut against the side wall of the first concave position or the side wall of the second concave position. After the guide protrusion moves from the second concave position to the first concave position by rotating the lock shaft, the other end of the lock shaft directly or indirectly acts on the lock disc to lock the lock disc, and after the lock shaft is rotated again, the guide protrusion moves to the second concave position, and the other end of the lock shaft unlocks the lock disc. The problems that a stage lamp limiting device is complex in structure and difficult to operate are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of stage lamps, and more specifically to a knob-type limiting device and a stage lamp having the same. Background Art

[0002] Most stage lights on the market have a chassis and a lamp head, as well as a lamp head and a support arm that are pivotally connected to each other, so that the lamp head can rotate at least 2 angles relative to the chassis. The main function of setting a horizontal lock and a vertical lock on the support arm is to fix the rotation angle of the lamp head, ensure that the lamp head is fixed when not in operation, and ensure that the angle of the lamp head will not change due to gravity or bumps, thereby reducing the risk of damage to the lamp when transporting, handling or storing stage lamps. At the same time, when debugging the light spot effect of the lamp, the horizontal lock / vertical lock can lock the projection angle of the lamp head, so that the light beam is accurately projected to the desired position to complete the test.

[0003] Common limiting devices in stage lights include a paddle-type locking structure, or a rotating shaft locking device as described in utility model CN214619215U (a stage light with a pivotal locking structure), which directly clamps the pivot shaft through a locking member and uses friction to limit the rotation of the pivot shaft. The paddle-type locking structure uses a paddle to engage or withdraw from the locking notch and is combined with a tension spring to open and close the lock. It has a complex structure and requires a lot of force to operate. The paddle protrudes from the outside of the lamp body and is prone to collision and is not beautiful. The paddle is opened and closed by moving the paddle into the locking notch, withdrawing from the position and using the tension spring. The structure is complex, and a lot of force is required to unlock and close the lock. In addition, the paddle protrudes from the outside of the lamp body, affecting the integrity of the overall appearance. Utility Model Content

[0004] The utility model is to overcome at least one defect of the prior art, and provide a knob-type limit device and a stage light having the same, so as to solve the problem that the limit device of the stage light has a complex structure and is difficult to operate.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: to provide a knob-type limiting device and a stage light having the same, wherein a knob-type limiting device comprises a seat body, a lock disk and a lock shaft with at least one guide protrusion circumferentially arranged at one end, the seat body is provided with a through hole for the other end of the lock shaft to pass through, and the lock shaft can directly or indirectly act on the lock disk after passing through the seat body; a side surface of the seat body close to the guide protrusion is provided with an annular protrusion having at least one group of first recesses and second recesses, and the bottom of the first recess is closer to the lock disk than the bottom of the second recess, and also includes an elastic member for forcing the guide protrusion to abut against the side wall of the first recess or the side wall of the second recess; after the guide protrusion is moved from the second recess to the first recess by rotating the lock shaft, the other end of the lock shaft directly or indirectly acts on the lock disk to lock it, and when the lock shaft is rotated again, the guide protrusion moves to the second recess, and the other end of the lock shaft unlocks the lock disk.

[0006] By setting the first recessed position and the second recessed position with a height difference, the lock shaft can be kept in at least two states and thus cooperate with the lock disk; in actual applications, by rotating the lock shaft, under the joint action of the annular protrusion and the elastic member, the guide protrusion is guided to switch between the first recessed position and the second recessed position, thereby quickly completing unlocking or locking, and the operation is simple; and the knob-type structure is simple and occupies a small space, which facilitates subsequent maintenance.

[0007] Furthermore, the annular protrusion includes two groups of the first concave positions and the second concave positions, and each of the first concave positions is arranged adjacent to one of the second concave positions. By providing two groups of the first concave positions and the second concave positions, the rotation stroke required when the lock shaft switches states is reduced; and when switching between different states, both clockwise and counterclockwise rotation can be completed.

[0008] Furthermore, a screw cap is fixed to one end of the lock shaft away from the lock disk, which makes it convenient for the user to pinch the lock shaft and apply force to the lock shaft more reasonably, thus saving effort.

[0009] Furthermore, the lock shaft is inserted with a latch rod in a direction perpendicular to its own length, and the portion of the latch rod protruding from the lock shaft body forms the guide protrusion. The latch rod is detachably arranged, and after other components are installed, the latch rod is inserted to form the guide protrusion, which is convenient for disassembly and assembly.

[0010] Furthermore, the elastic member is a spring, and the spring is located on the side of the seat away from the guide protrusion, with one end of the spring pushing the seat, and the other end pushing the lock shaft. The spring's own deformation is used to push the seat and the lock shaft at the same time, and the lock shaft is always exerted with a force approaching the lock disk, so that the guide protrusion is always in close contact with the inner wall of the first concave position or the second concave position, maintaining the locked or unlocked state, and having higher stability; and the spring has a simple structure and is easy to replace, which is convenient for subsequent maintenance work.

[0011] Furthermore, the lock shaft is provided with a step for resisting the spring, and the provision of the step is more conducive to the spring applying a resisting pressure to the lock shaft.

[0012] Furthermore, it also includes a waterproof ring located on one side of the seat body close to the lock disk, and the spring pushes the waterproof ring. By providing the waterproof ring, water vapor is prevented from entering the gap between the lock shaft and the seat body.

[0013] Furthermore, the edge of the lock disk is circumferentially distributed with a plurality of locking holes or locking notches for cooperating with the other end of the lock shaft. The lock disk can be locked at multiple angles, and the locking holes and the locking notches are easy to process.

[0014] The utility model also provides a stage lamp, comprising a lamp head, a support arm, a chassis and any of the aforementioned limiting devices, wherein the chassis and the support arm and / or the support arm and the lamp head are rotatably connected via a pivot shaft, and the limiting device can selectively limit the rotation angle between the chassis and the support arm and / or between the support arm and the lamp head. With such a configuration, the lamp head can rotate around at least two dimensions relative to the chassis, and by using the limiting device, the lamp head can be locked at a specific projection angle by simply rotating the locking shaft; when the angle needs to be switched, the unlocking can be completed by rotating the locking shaft again, and then the next step can be performed, which is convenient for operation.

[0015] Furthermore, the chassis is provided with a pivot shaft penetrating into the support arm, a horizontal driving device for driving the support arm to rotate around the pivot shaft is provided inside the support arm, and the lock plate is fixedly connected to the pivot shaft. The locking force of the limit device directly acts on the pivot shaft to limit the horizontal rotation angle of the support arm, which is convenient and quick.

[0016] Furthermore, the lamp holder is rotatably connected to the inner side of the support arm through the pivot shaft, a vertical driving device for driving the lamp holder to rotate around the support arm is provided inside the support arm, and the locking disk is fixedly connected to a side of the lamp holder close to the support arm, or is designed integrally with the lamp holder, so that the locking force of the limiting device directly acts on the lamp holder to achieve rapid locking. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the exploded structure of the support arm equipped with the limiting device.

[0018] Figure 2 yes Figure 1 Schematic diagram of the local enlarged structure of part A.

[0019] Figure 3 It is a structural cross-sectional view when the limiting device is installed on the support arm and is in an unlocked state.

[0020] Figure 4 yes Figure 3 Schematic diagram of the local enlarged structure of part B.

[0021] Figure 5 It is a structural cross-sectional view when the limiting device is installed on the support arm and is in a locked state.

[0022] Figure 6 yes Figure 5 Schematic diagram of the local enlarged structure of part C in the middle.

[0023] Figure 7 It is a structural schematic diagram of assembling a knob-type limit device on the support arm as a horizontal lock and a vertical lock.

[0024] In the figure:

[0025] 100, seat body; 110, through hole; 120, annular protrusion; 121, first concave position; 122, second concave position; 123, limit protrusion; 200, lock plate; 210, locking hole; 220, locking notch; 300, lock shaft; 310, guide protrusion; 320, screw cap; 330, latch rod; 340, step; 400, elastic member; 500, waterproof ring; 600, chassis; 700, support arm; 710, horizontal drive device; 711, horizontal motor; 712, horizontal synchronous belt; 720, vertical drive device; 721, vertical motor; 722, vertical synchronous belt; 730, groove; 740, support frame plate; 741, through hole; 750, drive gear; 800, lamp holder; 910, pivot shaft; 920, bushing. DETAILED DESCRIPTION

[0026] The drawings are only for illustrative purposes and cannot be construed as limiting the present invention. To better illustrate the present embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are only for illustrative purposes and cannot be construed as limiting the present invention.

[0027] like Figures 1 to 6 As shown, a knob-type limiting device and a stage light having the same are provided, wherein the knob-type limiting device comprises a base body 100, a lock plate 200 and a lock shaft 300 with at least one guide protrusion 310 circumferentially arranged at one end thereof, the base body 100 is provided with a through hole 110 for the other end of the lock shaft 300 to pass through, and the lock shaft 300 can directly or indirectly act on the lock plate 200 after passing through the base body 100; a side surface of the base body 100 close to the guide protrusion 310 is provided with an annular protrusion 120 having at least one set of first concave positions 121 and second concave positions 122, and the bottom of the first concave position 121 is relatively The bottom of the second recess 122 is closer to the lock disk 200, and also includes an elastic member 400 that forces the guide protrusion 310 to abut against the side wall of the first recess 121 or the side wall of the second recess 122; after the lock shaft 300 is rotated to move the guide protrusion 310 from the second recess 122 to the first recess 121, the other end of the lock shaft 300 directly or indirectly acts on the lock disk 200 to lock it, and when the lock shaft 300 is rotated again, the guide protrusion 310 moves to the second recess 122, and the other end of the lock shaft 300 unlocks the lock disk 200.

[0028] By setting the first recessed position 121 and the second recessed position 122 with a height difference, the lock shaft 300 can be kept in at least two states and thus cooperate with the lock disk 200; in actual applications, by rotating the lock shaft 300, under the joint action of the annular protrusion 120 and the elastic member 400, the guide protrusion 310 is guided to switch between the first recessed position 121 and the second recessed position 122, so as to quickly complete unlocking or locking, and the operation is simple; and the knob-type structure is simple and occupies a small space, which is convenient for subsequent maintenance.

[0029] Preferably, a side surface of the seat body 100 close to the lock disk 200 is further provided with a limiting protrusion 123 surrounding the lock shaft 300, and the limiting protrusion 123 guides the lock shaft 300 to always move along its length direction during the movement process, and is not easy to deviate.

[0030] Preferably, the guide protrusion 310 and the lock shaft 300 are integrally formed.

[0031] Preferably, the lock shaft 300 directly acts on the lock disk 200 to limit the position more accurately.

[0032] In a preferred embodiment of the utility model, the annular protrusion 120 includes two groups of the first concave positions 121 and the second concave positions 122, and each of the first concave positions 121 is disposed adjacent to one of the second concave positions 122. By providing two groups of the first concave positions 121 and the second concave positions 122, the rotation stroke of the lock shaft 300 when switching states is reduced; and when switching between different states, both clockwise rotation and counterclockwise rotation can be completed.

[0033] Preferably, the first recesses 121 and the second recesses 122 are evenly distributed, and the lock shaft 300 only needs to rotate 90° to switch the state. Optionally, different numbers of the first recesses 121 and the second recesses 122 can be selected according to actual design conditions.

[0034] Preferably, the locking shaft 300 has two guide protrusions 310 that are arranged opposite to each other.

[0035] In a preferred embodiment of the utility model, a screw cap 320 is fixed to one end of the lock shaft 300 away from the lock disk 200. This facilitates the user to pinch the lock shaft 300 and more reasonably apply the force to the lock shaft 300, saving effort. Preferably, the screw cap 320 can be fixedly connected to one end of the lock shaft 300 by screws or other means, or can be integrally formed to provide a more secure connection.

[0036] Preferably, the rotary cap 320 is provided with a kneading position for easy operation by the user. The kneading portion of the rotary cap 320 can be made of rubber material to enhance the user experience.

[0037] In a preferred embodiment of the utility model, the lock shaft 300 is inserted with a latch rod 330 along a direction perpendicular to its own length, and the portion of the latch rod 330 protruding from the lock shaft 300 body forms the guide protrusion 310. The latch rod 330 is detachably arranged, and after other components are installed, the latch rod 330 is inserted to form the guide protrusion 310, which is convenient for disassembly and assembly.

[0038] In a preferred embodiment of the utility model, the elastic member 400 is a spring, and the spring is located on the side of the seat body 100 away from the guide protrusion 310. One end of the spring pushes the seat body 100, and the other end pushes the lock shaft 300. The spring's own deformation is used to push the seat body 100 and the lock shaft 300 at the same time, and the lock shaft 300 is always applied with a force approaching the lock disk 200, so that the guide protrusion 310 is always in close contact with the inner wall of the first concave position 121 or the second concave position 122, and the locked or unlocked state is maintained, and the stability is higher; and the spring has a simple structure and is easy to replace, which is convenient for subsequent maintenance work.

[0039] In a preferred embodiment of the present invention, the lock shaft 300 is provided with a step 340 for resisting the spring. The provision of the step 340 is more conducive to the spring applying a resisting pressure to the lock shaft 300.

[0040] Preferably, the step 340 is arranged around the outer circumference of the lock shaft 300 and protrudes from the body of the lock shaft 300 , and is formed in an integral manner with the lock shaft 300 , which is easy to process.

[0041] Optionally, the step 340 may be replaced by a protrusion for abutting against the spring.

[0042] In a preferred embodiment of the utility model, a waterproof ring 500 is further included, which is located on the side of the base 100 close to the lock disk 200, and the spring pushes the waterproof ring 500. By providing the waterproof ring 500, water vapor is prevented from entering the gap between the lock shaft 300 and the base 100. The waterproof ring 500 is provided with a through hole for the lock shaft 300 to pass through, and the through hole is attached to the outer periphery of the lock shaft 300, further improving the waterproof performance.

[0043] In a preferred embodiment of the utility model, the edge of the lock disk 200 is circumferentially distributed with a plurality of locking holes 210 or locking notches 220 for cooperating with the other end of the lock shaft 300. The lock disk 200 can be locked at multiple angles, and the locking holes 210 and the locking notches 220 are easy to process. Preferably, the locking holes 210 or the locking notches 220 are evenly distributed on the edge of the lock disk 200.

[0044] like Figure 1 , 2 and Figure 7 As shown, the utility model further provides a stage lamp, comprising a lamp head 800, a support arm 700, a chassis 600 and any of the aforementioned limiting devices, wherein the chassis 600 and the support arm 700 and / or the support arm 700 and the lamp head 800 are rotatably connected via a pivot shaft 910, and the limiting device can selectively limit the rotation angle between the chassis 600 and the support arm 700 and / or between the support arm 700 and the lamp head 800. With such a configuration, the lamp head 800 can rotate around at least two dimensions relative to the chassis 600, and by using the limiting device, the lamp head 800 can be locked at a specific projection angle by simply rotating the locking shaft 300; when the angle needs to be switched, the unlocking can be completed by rotating the locking shaft 300 again, and then the next step can be performed, which is convenient for operation.

[0045] Preferably, the support arm 700 is provided with a support frame plate 740 for mounting the shaft sleeve 920, and the shaft sleeve 920 is rotatably connected to the pivot shaft 910 via a bearing. The seat body 100 is fixedly connected to the support frame plate 740, and the support frame plate 740 is provided with a groove 730 for accommodating the seat body 100, so that the appearance of the support arm 700 is more integrated; the support frame plate 740 is provided with a through hole 741 corresponding to the through hole 110 for the lock shaft 300 to pass through, and one end of the lock shaft 300 protrudes from the support frame plate 740 and is fixedly connected with a screw cap 320.

[0046] In a preferred embodiment of the utility model, the chassis 600 is provided with a pivot shaft 910 penetrating into the interior of the support arm 700, and a horizontal driving device 710 is provided inside the support arm 700 for driving the support arm 700 to rotate around the pivot shaft 910, and the locking plate 200 is fixedly connected to the pivot shaft 910. The locking force of the limiting device directly acts on the pivot shaft 910 to limit the horizontal rotation angle of the support arm 700, which is convenient and quick.

[0047] Preferably, one end of the pivot shaft 910 is fixedly connected to the chassis 600, and the other end penetrates into the support arm 700, and the end of the pivot shaft 910 located inside the support arm 700 is fixedly connected to a driving gear 750; the horizontal driving device 710 includes a horizontal motor 711 providing power and a horizontal synchronous belt 712 meshing with the driving gear 750, and the horizontal synchronous belt 712 is also meshed with the transmission shaft of the driving motor. The driving gear 750 extends along its thickness direction to form an edge with a plurality of the locking holes 210 or the locking notches 220, and finally forms the locking disk 200 used in conjunction with the locking shaft 300.

[0048] In a preferred embodiment of the utility model, the lamp holder 800 is rotatably connected to the inner side of the support arm 700 via the pivot shaft 910, a vertical driving device 720 is provided inside the support arm 700 for driving the lamp holder 800 to rotate around the support arm 700, and the locking plate 200 is fixedly connected to a side of the lamp holder 800 close to the support arm 700, or is designed integrally with the lamp holder 800. The locking force of the limiting device directly acts on the lamp holder 800 to achieve rapid locking.

[0049] Preferably, one end of the pivot shaft 910 is fixedly connected to the lamp holder 800, and the other end is inserted into the support arm 700. At the same time, the vertical drive device 720 includes a vertical motor 721 that provides power, and a vertical synchronous belt 722, and the vertical synchronous belt 722 is simultaneously sleeved on the transmission shaft of the vertical motor 721 and the pivot shaft 910. The lock plate 200 and the lamp holder 800 are designed as one body, and one end of the lock shaft 300 protrudes from the support arm 700 to facilitate the user's rotation, and the other end is designed to pass through the support arm 700 and directly act on the locking hole 210 located at the lamp holder 800.

[0050] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A knob type limit device, characterized in that: The invention comprises a seat body (100), a lock plate (200) and a lock shaft (300) with at least one guide protrusion (310) arranged circumferentially at one end thereof, the seat body (100) being provided with a through hole (110) for the other end of the lock shaft (300) to pass through, and the lock shaft (300) can directly or indirectly act on the lock plate (200) after passing through the seat body (100); a side surface of the seat body (100) close to the guide protrusion (310) is provided with an annular protrusion (120) having at least one group of first concave positions (121) and second concave positions (122), and the bottom of the first concave position (121) is closer to the bottom of the second concave position (122). The lock disk (200) also includes an elastic member (400) for forcing the guide protrusion (310) to abut against the side wall of the first recess (121) or the side wall of the second recess (122); after the guide protrusion (310) is moved from the second recess (122) to the first recess (121) by rotating the lock shaft (300), the other end of the lock shaft (300) directly or indirectly acts on the lock disk (200) to lock it; when the lock shaft (300) is rotated again, the guide protrusion (310) moves to the second recess (122), and the other end of the lock shaft (300) unlocks the lock disk (200).

2. The limiting device according to claim 1, characterized in that: The annular protrusion (120) comprises two groups of the first concave positions (121) and the second concave positions (122), and each of the first concave positions (121) is arranged adjacent to one of the second concave positions (122).

3. The limiting device according to claim 1, characterized in that: A screw cap (320) is fixed to one end of the lock shaft (300) away from the lock disk (200).

4. The limiting device according to claim 1, characterized in that: The lock shaft (300) is penetrated by a latch rod (330) along a direction perpendicular to its own length, and the portion of the latch rod (330) protruding from the body of the lock shaft (300) forms the guide protrusion (310).

5. The limiting device according to claim 1, characterized in that: The elastic member (400) is a spring, and the spring is located on a side of the seat body (100) away from the guide protrusion (310). One end of the spring pushes against the seat body (100), and the other end pushes against the lock shaft (300).

6. The limiting device according to claim 5, characterized in that: The lock shaft (300) is provided with a step (340) for resisting the spring.

7. The limiting device according to claim 5, characterized in that: It also includes a waterproof ring (500) located on a side of the seat (100) close to the lock plate (200), and the spring pushes against the waterproof ring (500).

8. The limiting device according to claim 1, characterized in that: A plurality of locking holes (210) or locking notches (220) for cooperating with the other end of the lock shaft (300) are distributed circumferentially on the edge of the lock disk (200).

9. A stage light, characterized in that: The invention comprises a lamp holder (800), a support arm (700), a chassis (600) and a limiting device as described in any one of claims 1 to 8, wherein the chassis (600) and the support arm (700) and / or the support arm (700) and the lamp holder (800) are rotatably connected via a pivot shaft (910), and the limiting device can selectively limit the rotation angle between the chassis (600) and the support arm (700) and / or the support arm (700) and the lamp holder (800).

10. The stage light according to claim 9, characterized in that: The chassis (600) is provided with a pivot shaft (910) penetrating into the interior of the support arm (700), and a horizontal driving device (710) is provided inside the support arm (700) for driving the support arm (700) to rotate around the pivot shaft (910), and the lock plate (200) is fixedly connected to the pivot shaft (910).

11. The stage light according to claim 9, characterized in that: The lamp holder (800) is rotatably connected to the inner side of the support arm (700) via the pivot shaft (910); a vertical driving device (720) is provided inside the support arm (700) for driving the lamp holder (800) to rotate around the support arm (700); the locking disk (200) is fixedly connected to a side of the lamp holder (800) close to the support arm (700), or is designed as an integral part with the lamp holder (800).

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