Connecting assembly and projector

Abstract

The invention relates to the technical field of movable connecting structures, in particular to a connecting assembly and a projector, the connecting assembly comprises a sliding module and a rotating module, the sliding module comprises a sliding rail and a sliding piece moving along the sliding rail, a limiting structure is arranged between the sliding rail and the sliding piece, and a damping rotating shaft of the rotating module is connected to the sliding piece. According to the connecting assembly and the projector, the degree of freedom of movable adjustment of sliding and rotating is achieved, sliding adjustment and rotating adjustment cooperate with each other in a non-interfering mode, the posture stability after adjustment is guaranteed, the structure is simple and compact, the occupied space is small, flexible adjustment can be conducted according to needs, use is convenient and fast, and stability is good.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of movable connection structure, in particular to a connection assembly and a projector. BACKGROUND

[0002] Projectors are gradually popularized and enter thousands of households and blend into ordinary people's families. Traditional projectors have simple shapes and are usually in fixed forms of boxes, which can fix functional modules such as light machines, mainboards and loudspeakers, can project pictures and play sounds, and can meet simple functional requirements of users. The existing projectors cannot be adjusted according to projection scenes, are inconvenient to use, and limit the application of projectors. SUMMARY

[0003] The present application relates to the technical field of movable connection structure, in particular to a connection assembly and a projector.

[0004] To solve the above technical problems, the technical scheme of the present application is as follows:

[0005] A connection assembly comprises a sliding module and a rotating module. The sliding module comprises a sliding rail and a sliding piece. The sliding piece is slidingly connected to the sliding rail. A limiting part is arranged on the sliding piece. A stop part that cooperates with the limiting part is arranged on the sliding rail. The rotating module comprises a damping rotating shaft. The damping rotating shaft comprises two rotating members that can rotate relative to each other. The first rotating member is connected to the sliding piece. The connection assembly of the present application is composed of the sliding module and the rotating module, has two-dimensional freedom of adjustment, can be adjusted in a straight line and can be adjusted in rotation, can constrain the sliding stroke and realize limiting locking after sliding to the position while being adjusted in a straight line, can ensure accurate sliding adjustment, the rotating module adopts a damping rotating shaft, can realize hovering through rotation damping while being adjusted in rotation, maintains the stability of the current rotating position, has a simple and compact structure, occupies a small space, can be flexibly adjusted as needed, is convenient to use, and is stable.

[0006] Further, a return elastic piece is arranged between the sliding rail and the sliding piece. The return elastic piece exerts a preset return force in the sliding direction between the sliding rail and the sliding piece, so that the sliding piece needs to overcome the force exerted by the return elastic piece or slide more easily along the force exerted by the return elastic piece when being moved relative to the sliding rail, which is conducive to ensuring the stability of the relative state between the sliding piece and the sliding rail and preventing misoperation.

[0007] Further, the sliding rail is provided with a switch one, and the sliding piece is provided with a trigger part for triggering the switch one. The relative sliding between the sliding rail and the sliding piece is a mechanical action, and the electrical switching action is performed by the cooperation between the trigger part and the switch one during the mechanical action, so that the use is more convenient and no additional operation is required.

[0008] Further, the limiting part or the stop part is in an elastic arc structure, and the limiting part or the stop part is elastically deformed to release the limiting when the limiting part and the stop part cooperate to achieve the sliding adjustment and limiting, so that the adjustment is facilitated again, and the operation is more convenient.

[0009] Further, the limiting part is detachably connected to the sliding piece, and / or the stop part is detachably connected to the sliding rail, so that the maintenance and replacement are easy.

[0010] Further, the sliding piece is provided with a hole, the limiting part is provided with a buckle for clamping connection in the hole, the edge of the hole is extended and provided with a stop edge for limiting the limiting part, and the limiting part is provided with the buckle at both ends of the arc structure. The assembly and disassembly are convenient, the connection stability is good, the precision is high, the limiting part has good elasticity to release the sliding hovering, and the operation is more convenient and good in hand feeling.

[0011] Further, the limiting part is made of wear-resistant self-lubricating material, and / or the stop part is made of wear-resistant self-lubricating material. The wear resistance is good, the service life is long, the friction coefficient is low, the required force for sliding adjustment is reduced, the operation is more convenient, and the use convenience is improved.

[0012] Further, the rotating member one of the damping rotating shaft comprises a shaft, the rotating member two is rotatably sleeved on the shaft, the rotating member one is further provided with a damping part connected with the shaft and used for contacting and cooperating with the rotating member two to form rotating damping, and an elastic pressing assembly is connected to the shaft to elastically press the rotating member two and the damping part in the axial direction of the shaft. The structure is simple and compact, the rotating adjustment is realized, the post-hanging after rotation is reliably realized by the rotating damping, the stability of the rotating posture is maintained, the stroke length of the rotating adjustment is limited by the stroke limiting mechanism, the misoperation of over-rotation is avoided, the operation is more accurate and reliable.

[0013] Further, one of the axial end faces of the damping member and the rotating member two is provided with a recess, and the other is provided with a convex block matched with the recess, and the rotating member two and the damping member are relatively movable in the axial direction of the shaft. The damping rotating shaft of the present application not only forms damping through friction, but also further forms damping through the matching of the recess and the convex block. When the convex block is inserted into the recess, accurate positioning and limit self-locking are achieved. A greater driving force needs to be applied between the rotating member two and the rotating member one to overcome the compression effect of the elastic compression assembly to make the rotating member two and the damping member produce relative axial displacement, and then the convex block can be withdrawn from the recess, and then the relative rotation between the rotating member two and the rotating member one can be realized again. The damping in the state that the convex block is inserted into the recess is different from the state that the convex block is withdrawn from the recess, so that the operation feeling is obviously different, and the user can accurately identify whether the rotation is in place.

[0014] Further, the cross section of the shaft is non-circular, the damping member has a hole matched with the shaft, and the damping member is detachably sleeved on the shaft. The edge of the hole of the damping member is provided with a convex rib to match with the shaft and stop relative rotation of the damping member with respect to the shaft in the circumferential direction. The structure is simple, compact, easy to process and assemble, easy to maintain and replace, and low in implementation cost.

[0015] Further, the rotating member one and the rotating member two are further provided with a stroke limiting mechanism for limiting the rotation stroke in the rotation circumferential direction. The stroke limiting mechanism comprises a limiting groove and a convex block movably arranged in the limiting groove. The limiting groove is arranged on one of the rotating member one and the rotating member two along the circumferential direction of the shaft and covers a predetermined angle range. The convex block is arranged on the other. The structure is simple and easy to implement, and can reliably limit the rotation stroke to avoid misoperation of over-rotation.

[0016] Further, the cross section of the shaft is non-circular, the rotating member one comprises a limiting member having a hole matched with the shaft, the limiting member is detachably sleeved on the shaft and stops relative rotation of the limiting member with respect to the shaft in the circumferential direction, and the limiting groove is arranged on the limiting member. The structure is simple, compact, easy to process, maintain and replace, and low in implementation cost.

[0017] Further, the rotating module further comprises a shaft sleeve sleeved on the outer periphery of the damping rotating shaft, and the shaft sleeve is connected with the rotating member two. The damping rotating shaft is covered by the shaft sleeve to effectively protect the damping rotating shaft from the adverse effects of the outside world. The damping rotating shaft comprises a plurality of matched components, and the components are relatively movable. Long-term exposure to the outside world can easily cause dust to accelerate wear and affect the service life.

[0018] Further, the outer periphery of the second rotating member is non-circular, and the inner periphery of the shaft sleeve is matched with the shape of the outer periphery of the second rotating member to make the shaft sleeve circumferentially stop relative to the second rotating member. The structure is simple, compact, and easy to implement and assemble.

[0019] Further, the shaft is connected with a snap spring to axially limit the shaft sleeve, the snap spring is provided with a flange abutting to the surface of the shaft, and the flange is connected with the shaft through a fixing member. The snap spring is prevented from being driven to rotate when the shaft sleeve rotates relative to the shaft, the limiting function of the snap spring is stable and reliable, the accidental separation of the shaft sleeve from the shaft is avoided, and the reliability and stability of the rotating adjustment are ensured.

[0020] Further, the cable is arranged along the slide rail, bent into a drag chain shape, and connected to the sliding piece, and the shaft is a hollow shaft for the cable to pass through. The cable is bent into a drag chain shape to form a structure capable of automatically storing the cable. When the sliding piece moves relative to the slide rail, the bent drag chain part of the cable follows, does not affect the movement of the sliding piece, and ensures stable power supply. The cable passes through the hollow part of the shaft, which ensures reliable power supply and does not affect the rotating adjustment of the rotating module. The structure is compact.

[0021] A projector comprises a seat body, a main machine, and the connecting assembly, the seat body is connected with the slide rail, and the main machine is directly or indirectly connected with the second rotating member. The projector can lift and rotate the main machine as required, flexibly meets different projection scene requirements, has a simple and compact structure, and has good structural stability while achieving flexible adjustment.

[0022] Compared with the prior art, the projector has the following advantages:

[0023] The connecting assembly and the projector have sliding and rotating movement adjustment degrees of freedom, the sliding adjustment and the rotating adjustment cooperate without interfering with each other, the posture stability after adjustment is ensured, the structure is simple and compact, the occupied space is small, the flexible adjustment can be achieved as required, the use is convenient, and the stability is good. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 FIG. 1 is a structural schematic view of a connecting assembly according to the present application;

[0025] Figure 2 FIG. 2 is a front structure schematic view of the connecting assembly according to the present application; Figure 1 FIG. 3 is a back structure schematic view of the connecting assembly according to the present application;

[0026] Figure 3 FIG. 4 is a partial structure schematic view of a stop portion of a slide rail matched with a limiting portion of a sliding piece;

[0027] Figure 4 FIG. 5 is a structure schematic view of the limiting portion connected to the sliding piece; and

[0028] Figure 5 Fig. 1 is a schematic view of the back structure of the projector according to the present application; Figure 4

[0029] Fig. 2 is a schematic view of the structure of the switch one; Figure 6

[0030] Figure 7 Fig. 3 is a schematic view of the structure of the rotating module connected to the sliding member;

[0031] Figure 8 Fig. 4 is a schematic view of the exploded structure of the rotating module;

[0032] Figure 9 Fig. 5 is a schematic view of the exploded structure of the damping rotating shaft;

[0033] Figure 10 Fig. 6 is a schematic view of the structure of the projector according to the present application;

[0034] Figure 11 Fig. 7 is a schematic view of the connecting structure of the connecting assembly and the seat body;

[0035] Figure 12 Fig. 8 is a schematic view of the connecting structure of the connecting assembly and the main support of the main machine.

[0036] In the drawings:

[0037] The sliding module 100, the rotating module 200, the sliding rail 10, the stop portion 11, the sliding member 20, the blocking edge 201, the limiting portion 21, the buckle 211, the trigger portion 22, the return elastic member 30, the switch one 40, the insulating base 401, the metal sheet 402, the switch two 41, the damping rotating shaft 50, the rotating member one 51, the shaft 511, the damping member 512, the convex 5121, the limiting member 513, the rotating member two 52, the recess 5201, the limiting groove 531, the boss 532, the elastic compression assembly 54, the shaft sleeve 55, the clasp spring 56, the flange 561, the cable 60, the appearance shell 70, the stamping metal piece 71, the seat body 80, the clasp piece 81, the main machine 90, and the main support 91. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0039] The connecting assembly and the projector disclosed by the embodiments of the present application can be adjusted as needed to meet different application requirements, and have compact structure, small space occupation, flexible adjustment, and high reliability.

[0040] ​As Figure 1 , Figure 2 and Figure 8 and Figure 9 indicate, a connecting assembly mainly comprises a sliding module 100 and a rotating module 200, the sliding module 100 comprises a sliding rail 10 and a sliding piece 20, the sliding piece 20 is slidingly connected on the sliding rail 10, a limiting part 21 is arranged on the sliding piece 20, a stop part 11 cooperating with the limiting part 21 is arranged on the sliding rail 10, the rotating module 200 comprises a damping rotating shaft 50, the damping rotating shaft 50 comprises a rotating member one 51 and a rotating member two 52 which can rotate relative to each other, the rotating member one 51 is connected on the sliding piece 20. The connecting assembly combines the sliding module 100 and the rotating module 200, realizes linear sliding adjustment and rotation adjustment at the same time, flexibly meets different requirements, the sliding module 100 can realize sliding stroke restriction or sliding position positioning through cooperation of the limiting part 21 and the stop part 11 when realizing linear sliding adjustment, at the same time, the rotating module 200 realizes rotating suspension through rotating damping of the damping rotating shaft 50, guarantees stability after adjustment, the structure is simple, compact, easy to implement, suitable for various electronic devices, for example, a projector, etc., can realize lifting and deflection adjustment of the projector, flexibly adapts to different projection scenes, can adjust projection picture height, inclination and the like according to specific projection scenes.

[0041] Specifically, as Figure 1 and Figure 2 indicate, the sliding rail 10 and the sliding piece 20 are both sheet metal parts, the structure is light and high in strength, two sides of the sliding piece 20 are bent into oppositely arranged C-shaped groove structures, the sliding rail 10 is sleeved on the C-shaped grooves to constitute a stable sliding fit structure, preferably, the sliding piece 20 is wrapped with an inner lining of wear-resistant self-lubricating material at the C-shaped grooves through in-mold injection, the wear-resistant self-lubricating material can be POM, Teflon and the like, has good wear resistance, low friction coefficient, improves sliding smoothness, prolongs service life, the inner lining is gap-fitted with the sliding rail, sliding operation is more convenient.

[0042] Further, as Figure 1As shown, the slide rail 10 of the slide module 100 is provided with a return elastic member 30 between the slide rail 10 and the slide piece 20, which exerts a preset return force in the sliding direction between the slide rail 10 and the slide piece 20, for example, the force direction of the return elastic member 30 is towards the direction in which the slide piece 20 is in the open state, so that when switching the slide piece 20 from the folded state to the open state, the operation direction is along the force direction of the return elastic member 30, so that the operation is more convenient, and the slide piece 20 can be more easily switched to the open state, and when the slide piece 20 needs to be switched from the open state to the folded state, the operation direction is opposite to the force direction of the return elastic member 30, so that a greater force needs to be exerted to switch, the return elastic member 30 can to some extent play a role in keeping the open state, avoiding misoperation, avoiding the situation that the slide piece 20 is quickly switched to the folded state and causing, for example, hand clamping, so that the operation is more safe and reliable. Specifically, the return elastic member 30 is in the form of a torsion spring, one end of which is connected to the slide rail 10 and the other end of which is connected to the slide piece 20, which is light in structure and small in space occupation, and can reliably exert elastic force.

[0043] Further, as shown in Figure 3 The limiting portion 21 on the slide piece 20 cooperates with the stop portion 11 on the slide rail 10 to constrain the sliding stroke and achieve limiting locking after sliding, and keep the stability of the current sliding position. Specifically, the stop portion 11 on the slide rail 10 is an arch-shaped protrusion processed by sheet metal, and multiple stop portions 11 can be arranged at intervals in the sliding direction of the slide rail 10 to achieve limiting hovering at multiple positions. The limiting portion 21 on the slide piece 20 can also be an arch-shaped protrusion processed by sheet metal, which can be pushed to make the limiting portion 21 abut against and press the stop portion 11 to produce a certain degree of elastic deformation to achieve limiting release, and then the sliding position of the slide piece 20 can be switched. Relatively speaking, the arch-shaped protrusion processed by sheet metal has high structural strength and weak elasticity, and a large force needs to be exerted to make the arch-shaped protrusion processed by sheet metal deform to release the limiting, so the limiting portion 21 or the stop portion 11 is preferably in the form of an elastic arch-shaped structure, which can easily deform to release the limiting while achieving limiting hovering, so that the operation of sliding the slide piece 20 is more convenient and labor-saving. As shown in Figures 3 to 5In a preferred embodiment shown, the limiting part 21 is a component detachably connected to the sliding piece 20, the sliding piece 20 is provided with a hole, and the limiting part 21 is provided with buckles 211 to enable the limiting part 21 to be snap-connected in the hole, which is convenient to assemble and disassemble, easy to maintain and replace. Preferably, the limiting part 21 is made of wear-resistant self-lubricating material, which has good wear resistance, long service life, low friction coefficient, reduces the force required for sliding adjustment, makes the operation more convenient, and improves the convenience of use. More preferably, the hole edge of the sliding piece 20 is extended and provided with a stop edge 201, and the limiting part 21 abuts against the stop edge 201 when being buckled into the hole. The stop edge 201 limits the limiting part 21 to keep the position accurate and stable. Since the limiting part 21 has an elastic arch-shaped structure, buckles 211 are arranged at both ends of the arch-shaped structure to ensure that the limiting part 21 can be reliably buckled in the hole and can effectively elastically deform to release the limiting suspension between the sliding piece 20 and the slide rail 10. Further, buckles 211 are arranged on both sides of the limiting part 21 in the direction perpendicular to the line connecting the two ends of the arch-shaped structure, that is, buckles 211 are symmetrically arranged on the ends of the arch-shaped structure with the line connecting the two ends as the symmetry line, which further improves the buckling stability. Similarly, the stop part 11 can also have a similar structure to the limiting part 21 for convenient maintenance and replacement.

[0044] Further, as shown in Figure 1 The slide rail 10 is provided with a switch one 40, and the sliding piece 20 is provided with a trigger part 22 for triggering the switch one 40. The sliding piece 20 is triggered and controlled while sliding relative to the slide rail 10, which combines mechanical sliding with electrical control. For example, for a projector, the sliding piece 20 is slid to the open position relative to the slide rail 10 to start, and the sliding piece 20 is slid to the closed position relative to the slide rail 10 to stop, which makes the operation more convenient. Specifically, as shown in Figure 6 The switch one 40 includes an insulating base 401 and two metal sheets connected to the insulating base 401. At least one of the two metal sheets has a spring sheet structure. The switch one 40 is connected to the slide rail 10 through the insulating base 401, which is fixedly connected to the slide rail 10 through a hot-melt column, and has good connection stability. The two metal sheets 402 are switched between contact and separation states under the touch control of the trigger part 22. Specifically, the two metal sheets 402 are in a disconnected state in a normal state. When the sliding piece 20 is slid to the trigger part 22 to touch the switch one 40, the trigger part 22 causes the metal sheet with a spring sheet structure to elastically deform and contact the other metal sheet to reach a conduction state. After the sliding piece 20 is moved away, the metal sheet with a spring sheet structure automatically elastically resets and separates from the other metal sheet to reach a disconnected state. Further, as shown in Figure 2As shown, a switch 2 41 is also provided on the slide rail 10. The switch 2 41 is a physical button switch for manual operation, providing multiple control guarantees. When the switch 1 40 fails, the switch 2 41 can also be used for electrical control to ensure that the equipment can still work normally.

[0045] like Figures 7 to 9 The illustrated rotation module 200 has a damping shaft 50 whose first rotating member 51 includes a shaft 511. A second rotating member 52 is rotatably sleeved on the shaft 511. The first rotating member 51 is further provided with a damping element 512 connected to the shaft 511 and configured to engage with the second rotating member 52 to provide rotational damping. An elastic pressing assembly 54 is connected to the shaft 511 to elastically press the second rotating member 52 and the damping element 512 axially along the shaft 511. A travel limiter mechanism is further provided between the first rotating member 51 and the second rotating member 52 to limit the rotational travel in the circumferential direction. The structure is simple and compact, and while achieving rotational adjustment, it can reliably achieve post-rotation hovering through rotational damping, maintaining rotational stability.

[0046] Specifically, the damping member 512 and the shaft 511 can be an integral structure, that is, the shaft 511 is integrally formed with a convex step surface to form a portion for contacting and cooperating with the rotating member 2 52. The structure is compact and has fewer parts, but it will increase the difficulty of processing. Figure 8 and Figure 9In the shown embodiment, the damping member 512 is a component independent of the shaft 511, the damping member 512 is a split member to be detachably sleeved on the shaft 511, the shaft 511 is provided with a stepped portion for the damping member 512 to abut against in the axial direction of the shaft 511, the stepped portion of the shaft 511 is connected with the sliding member 20 by a screw to realize the engagement of the sliding module 100 and the rotating module 200, the cross section of the shaft 511 is non-circular, specifically, one side or more sides of the circumference of the cylinder is a cutting formed plane, so that the cross section is non-circular, the hole of the damping member 512 matches the shaft 511, so that when the damping member 512 is sleeved on the shaft 511, the damping member 512 can be stopped in the circumferential direction relative to the shaft 511, further, the hole edge of the damping member 512 is provided with a convex rib to be in interference fit with the shaft 511, to better ensure that the damping member 512 and the shaft 511 are in a relatively static state. The hole of the rotating member two 52 is preferably circular, when the rotating member two 52 is sleeved on the shaft 511, the hole diameter of the rotating member two 52 and the single side gap of the outer diameter of the shaft 511 is 0.02mm, the rotating member two 52 can freely rotate relative to the shaft 511, that is, the rotating member two 52 can rotate relative to the damping member 512, the elastic compression assembly 54 exerts an elastic compression force in the axial direction, the rotating member two 52 is in close contact with the damping member 512 in the axial direction, the rotating member two 52 is resisted by the frictional resistance generated by the damping member 512 relative to the shaft 511, when the rotating member two 52 is adjusted by rotation, the rotating member two 52 is also maintained at the rotated position by the damping generated by the damping member 512. In this embodiment, the elastic compression assembly 54 specifically includes a nut and an elastic element, the elastic element can be a disc spring, an elastic washer, etc., the shaft 511 is provided with a threaded section, the nut is screwed on the shaft to exert an elastic force by the elastic element, so that the rotating member two 52 is in close contact with the damping member 512 in the axial direction, to ensure that the rotating member two 52 and the damping member 512 have a stable and reliable rotational damping.

[0047] As Figure 9As shown, the axial end surface of the damping member 512 is provided with a convex 5121, and the axial end surface of the rotating member two 52 is provided with a recess 5201 matched with the convex 5121. The matching of the convex 5121 and the recess 5201 plays a positioning role, which can make the rotation switching more accurate and rotate in place. In addition, the matching of the convex 5121 and the recess 5201 further forms damping to achieve self-locking. A greater driving force needs to be applied between the rotating member two 52 and the rotating member one 51 to overcome the compression effect of the elastic compression assembly 54 to make the convex 5121 exit from the recess 5201, so that the relative rotation between the rotating member two 52 and the rotating member one 51 is generated. The damping in the state that the convex is inserted into the recess is different from that in the state that the convex exits from the recess, so that the operation feeling is obviously different, which facilitates the user to accurately identify whether the rotation is in place. The rotating member two 52 and the damping member 512 are relatively movable in the axial direction of the shaft 511. In the embodiment, the damping member 512 is fixed relative to the shaft 511, and does not axially move relative to the shaft 511 during rotation adjustment. The rotating member two 52 is elastically compressed on the damping member 512 by the elastic compression assembly 54. During rotation adjustment, the rotating member two 52 can axially move relative to the shaft 511 to overcome the force of the elastic compression assembly 54, so that the convex 5121 exits from the recess 5201, and the rotation of the rotating member two 52 relative to the damping member 512 can be realized. Further, the recess 5201 can be provided with a plurality of recesses in the rotation circumferential direction to be distributed at different positions, so that multi-position hovering self-locking can be realized during rotation.

[0048] The stroke limiting mechanism includes a limiting groove 531 and a boss 532 movably arranged along the limiting groove 531. The limiting groove 531 is along the circumferential direction of the shaft 511 and covers a predetermined angle range, for example, the limiting groove 531 covers an angle range of 60 degrees, 90 degrees, etc. The limiting groove 531 can be arranged on one of the rotating member one 51 and the rotating member two 52, and the boss 532 is arranged on the other. Specifically, the limiting groove 531 can be arranged on the stepped portion of the shaft 511, and the boss 532 is arranged on the rotating member two 52. The structure is compact, the number of components is small, and the assembly is easy. Figure 8 and Figure 9In a preferred embodiment shown, the rotating member one 51 comprises a limiting member 513 which is a component independent of the shaft 511, the limiting member 513 has a hole matching the shaft 511 with a non-circular cross section, the limiting member 513 is detachably sleeved on the shaft 511 and is circumferentially stopped relative to the shaft 511, the limiting slot 531 is arranged on the limiting member 513, and the limiting slot 531 is specifically a notch arranged on the outer peripheral edge of the limiting member 513 and covering a preset angle range, which is simple in structure, compact, easy to process, maintain and replace, and low in implementation cost. When the limiting member 513 is connected to the shaft 511, it is circumferentially stopped relative to the shaft 511, so that the rotation stroke of the rotating member two 52 is limited by the limiting member 513, that is, the rotating member two 52 can only rotate within a limited range relative to the shaft 511, and over-rotation is effectively avoided.

[0049] Further, as shown in Figure 7 and Figure 8 The rotating module 200 further comprises a shaft sleeve 55 sleeved on the outer periphery of the damping rotating shaft 50, the shaft sleeve 55 is connected with the rotating member two 52 in cooperation, the damping rotating shaft 50 is covered by the shaft sleeve 55, the damping rotating shaft 50 is effectively protected, and the damping rotating shaft 50 is prevented from being affected by the external environment. The damping rotating shaft 50 comprises a plurality of elements stacked together, when the damping rotating shaft 50 is exposed, dust may enter between the elements, affecting smooth rotation, causing excessive wear of the damping rotating shaft 50 and other conditions. Therefore, the damping rotating shaft 50 is effectively protected by the shaft sleeve 55, the long-term stable work of the damping rotating shaft 50 is ensured, and the service life is prolonged. The shaft sleeve 55 is connected with the rotating member two 52 in cooperation, so that the shaft sleeve 55 and the rotating member two 52 can be regarded as a whole, the shaft sleeve 55 and the rotating member two 52 rotate relative to the shaft 511, and an external structural member can be connected on the shaft sleeve 55 to realize rotation adjustment.

[0050] More specifically, the outer periphery of the rotating member two 52 is non-circular, the inner periphery of the shaft sleeve 55 is matched with the shape of the outer periphery of the rotating member two 52, so that when the shaft sleeve 55 is sleeved on the outer periphery of the damping rotating shaft 50, the inner periphery of the shaft sleeve 55 is just sleeved and engaged with the outer periphery of the rotating member two 52, the shaft sleeve 55 is circumferentially stopped relative to the rotating member two 52, the shaft sleeve 55 is connected with the rotating member two 52 as a whole, and the shaft sleeve 55 and the rotating member two 52 are rotatably moved relative to the shaft 511. Further, the shaft 511 is provided with a limiting groove, and the snap spring 56 is clamped in the limiting groove to axially limit the shaft sleeve 55. Under normal circumstances, when the shaft sleeve 55 rotates relative to the shaft 511, the snap spring 56 may be rotated, which may cause the snap spring 56 to loosen and is not conducive to the stable limiting function of the snap spring 56. Therefore, it is preferred to ensure the stability of the snap spring 56. Specifically, the snap spring 56 is provided with a flange 561 abutting against the surface of the shaft 511, the flange 561 is connected with the shaft 511 through a screw or the like, and further, the surface of the shaft 511 is provided with a flat surface at the abutting position of the flange, so that the flange 561 is more stably supported on the surface of the shaft 511, the stability of the snap spring 56 is improved, the snap spring 56 is prevented from rotating and loosening, and the shaft sleeve 55 is stably sleeved on the damping rotating shaft 50.

[0051] Further, the aforementioned connecting assembly is suitable for various electronic devices, so that in addition to realizing mechanical movement adjustment including linear sliding and rotation, electrical control is usually required. In order to ensure that the mechanical movement adjustment and the electrical control do not affect each other, the cable 60 for electrical control is routed along the slide rail 10, one end of the cable 60 is fixed on the slide rail 10 through a screw, the other end is bent into a chain shape and connected to the sliding piece 20, the part of the cable 60 bent into a chain shape has the function of automatic winding and unwinding, so that the sliding piece 20 slides relative to the slide rail 10, the cable 60 does not cause interference, and the cable 60 is not damaged due to pulling. The shaft 511 is a hollow shaft, and the end of the cable 60 connected to the sliding piece 20 passes through the hollow part of the shaft 511 to electrically connect with external equipment connected to the rotating member two 52 or the shaft sleeve 55. The cable is hidden and does not interfere with the rotation adjustment, and the stability and reliability of the electrical connection are ensured.

[0052] As shown in a projector, Figures 10 to 12 mainly comprising a seat body 80, a main machine 90 and the aforementioned connecting assembly. The seat body 80 is connected with the slide rail 10, and the main machine 90 is directly or indirectly connected with the rotating member two 52. Specifically, while meeting the functionality, the appearance beauty also needs to be ensured. As shown in Figure 11 and Figure 12As shown, the appearance shell 70 is arranged to cover the slide rail 10 and is connected with the slide rail 10, when applied to the projector, the slide rail 10 is arranged in a vertical state, the bottom of the slide rail 10 is directly or indirectly connected to the seat body 80, the sliding piece 20 is raised and lowered along the slide rail 10, the rotating module 200 is connected to the sliding piece 20, and the main machine 90 is connected to the rotating module 200, thereby forming a single cantilever support structure, the weight of the main machine 90 is borne on the slide rail 10, that is, borne on the appearance shell 70, generally, the appearance shell 70 is made of plastic material, which has weak structural strength and is difficult to meet the structural strength requirement of the single cantilever support, and the appearance shell 70 is further connected with the stamping metal piece 71, the stamping metal piece 71 is used to strengthen the appearance shell 70 to better bear the main machine 90, improve the overall structural stability of the projector, avoid the collapse and damage condition, and the stamping metal piece 71 improves the support structural strength while solving the machine vibration problem through the structural stability, and guarantees the projection picture stability.

[0053] Further, as shown in Figure 11 The seat body 80 is connected with the bottom of the appearance shell 70, that is, indirectly connected with the bottom of the slide rail 10, in order to guarantee the connection stability and the convenient assembly and disassembly, the seat body 80 and the appearance shell 70 are connected through the buckle piece 81 and the screw, the seat body 80 and the appearance shell 70 can be quickly connected through the buckle piece 81, convenient assembly and disassembly, and accurate alignment between the seat body 80 and the appearance shell 70 is guaranteed, the screw is used to improve the connection stability, avoid the loosening condition, and guarantee that the main machine 90 can be stably borne on the seat body 80. The shaft sleeve 55 of the rotating module 200 is provided with a flange, as shown in Figure 12 The main support 91 on the main machine 90 is connected to the shaft sleeve 55 through the flange, the main support 91 bears the main board, the optical machine and other functional modules, the structure is simple and compact, the connection stability is good, the connection assembly can be used to make the main machine 90 be raised and lowered and rotated and adjusted, flexible adaptation to various projection scenes is guaranteed, the projection quality is guaranteed, and the flexible applicability of the projector is improved.

[0054] The above is only the preferred embodiment of the present application, it should be pointed out that the above preferred embodiment should not be regarded as the limitation of the present application, the protection scope of the present application should be limited by the scope defined by the claims. For ordinary skilled in the art, several improvements and refinements can be made without departing from the spirit and scope of the present application, and these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. A connection assembly, characterized in that The sliding module comprises a sliding rail (10) and a sliding piece (20), the sliding piece (20) is slidingly connected on the sliding rail (10), a limiting part (21) is arranged on the sliding piece (20), and a stop part (11) matched with the limiting part (21) is arranged on the sliding rail (10); the rotating module comprises a damping rotating shaft (50), the damping rotating shaft (50) comprises a rotating member I (51) and a rotating member II (52) which can rotate relative to each other, and the rotating member I (51) is connected on the sliding piece (20).

2. The connection assembly of claim 1, wherein, A return elastic member (30) is arranged between the sliding rail (10) and the sliding piece (20).

3. The connection assembly of claim 1, wherein, A switch I (40) is arranged on the sliding rail (10), and a triggering part (22) for triggering the switch I (40) is arranged on the sliding piece (20).

4. The connection assembly of claim 1, wherein, The limiting part (21) or the stop part (11) is in an elastic arc structure.

5. The connection assembly of claim 4, wherein, The limiting part (21) is detachably connected on the sliding piece (20), and / or the stop part (11) is detachably connected on the sliding rail (10).

6. The connection assembly of claim 5, wherein, A hole is arranged on the sliding piece (20), a buckle (211) is arranged on the limiting part (21) to be clamped and connected in the hole, an edge of the hole is extended and provided with a stop edge (201) for limiting the limiting part (21), and the limiting part (21) is respectively provided with the buckle (211) at two ends of the arc structure.

7. The connection assembly of claim 6, wherein, The limiting part (21) is made of wear-resistant self-lubricating material, and / or the stop part (11) is made of wear-resistant self-lubricating material.

8. The connection assembly of claim 1, wherein, The rotating member I (51) of the damping rotating shaft (50) comprises a shaft (511), the rotating member II (52) is rotatably sleeved on the shaft (511), the rotating member I (51) is further provided with a damping member (512) connected with the shaft (511) and used for contact matching with the rotating member II (52) to form rotation damping, and an elastic compression assembly (54) is connected with the shaft (511) to elastically press the rotating member II (52) and the damping member (512) in the axial direction of the shaft (511).

9. The connection assembly of claim 8, wherein, The axial end face of one of the damping member (512) and the rotating member II (52) is provided with a recess (5201), and the other is provided with a convex (5121) matched with the recess (5201), and the rotating member II (52) and the damping member (512) can move relative to each other in the axial direction of the shaft (511).

10. The connection assembly of claim 9, wherein, The cross section of the shaft (511) is non-circular, the damping member (512) has a hole matched with the shaft (511), the damping member (512) is detachably sleeved on the shaft (511), and the hole edge of the damping member (512) is provided with a convex rib to be in interference fit with the shaft (511) and be stopped in the circumferential direction relative to the shaft (511).

11. The connection assembly of claim 9, wherein, The rotation member one (51) and the rotation member two (52) are further provided with a stroke limiting mechanism for limiting the rotation stroke in the rotation circumferential direction, the stroke limiting mechanism comprises a limiting groove (531) and a boss (532) movably arranged along the limiting groove (531), the limiting groove (531) is arranged along the circumferential direction of the shaft (511) and covers a preset angle range, the limiting groove (531) is arranged on one of the rotation member one (51) and the rotation member two (52), and the boss (532) is arranged on the other one.

12. The connection assembly of claim 11, wherein, The cross section of the shaft (511) is non-circular, the rotation member one (51) comprises a limiting piece (513) having a hole matched with the shaft (511), the limiting piece (513) is detachably sleeved on the shaft (511) and is circumferentially stopped relative to the shaft (511), and the limiting groove (531) is arranged on the limiting piece (513).

13. The connection assembly of claim 8, wherein, The rotation module further comprises a shaft sleeve (55) sleeved on the outer periphery of the damping rotation shaft (50), and the shaft sleeve (55) is connected with the rotation member two (52) in a matched mode.

14. The connection assembly of claim 13, wherein, The outer periphery of the rotation member two (52) is non-circular, and the inner periphery of the shaft sleeve (55) is matched with the shape of the outer periphery of the rotation member two (52) so that the shaft sleeve (55) is circumferentially stopped relative to the rotation member two (52).

15. The connection assembly of claim 13, wherein, The shaft (511) is connected with a clamping spring (56) for axially limiting the shaft sleeve (55), the clamping spring (56) is provided with a flange (561) abutting to the surface of the shaft (511), and the flange (561) is connected with the shaft (511) through a fixing piece.

16. The connection assembly of claim 8, wherein, Further comprising a cable (60) which is routed along the slide rail (10) and connected to the sliding piece (20) after being bent into a drag chain shape, and the shaft (511) is a hollow shaft for the cable to pass through.

17. A projector comprising a seat body (80), a main machine (90) and the connecting assembly according to any one of claims 1 to 16, the seat body (80) is connected with the slide rail (10), and the main machine (90) is directly or indirectly connected with the rotation member two (52).

Images