CN102980012A - Projector telescopic hanging frame - Google Patents

Abstract

The invention discloses a telescopic hanger for a projector, which includes: a mounting frame, a rotating assembly, a hanging board frame arranged at the bottom of the mounting frame, a first push rod assembly, and a second push rod assembly that drives the rotating assembly to rotate back and forth relative to the mounting frame And the third push rod assembly that drives the rotating assembly to rotate in the horizontal plane relative to the installation frame. The mounting frame has a base plate, the left and right sides of which form flaps, one flap has a first perforation, and the other flap has a first threaded hole, a pair of ball sleeves with spherical inner walls are fixed at the bottom of the mounting frame, and the two spherical inner walls define spherical space. The hanging plate frame includes a top plate with holes. The rotating assembly includes a rotating ball with a spherical portion, and the spherical portion is arranged in the spherical space; the rotating assembly includes a first ball seat fixed on the spherical portion. The first push rod assembly includes a first push rod with external threads formed on the surface and a first ball fixed on the push rod. The first push rod passes through the first threaded hole and the first through hole, and the first ball is accommodated in the first ball seat.

Description

Telescopic hanger for projector

【Technical field】

The invention relates to projector accessories, in particular to a telescopic hanger for a projector.

【Background technique】

Projectors that are widely used in teaching, scientific research conferences, and demonstration occasions are usually installed on the walls or ceilings of, for example, meeting rooms by means of special hangers.

Due to position errors during installation, it is usually necessary to adjust the positional relationship between the projector and the hanger so that the image can be correctly projected onto the appropriate screen.

However, the existing projector hanger cannot flexibly fine-tune the position of the projector, such as the horizontal posture, the left-right swing position, and the vertical tilt posture, but only adjusts by means of the adjustment function of the projector itself. The adjustment range achieved by the projector itself is very limited, and often cannot satisfy the fast and flexible multi-directional attitude adjustment of the projector.

Therefore, it is necessary to provide an improved projector hanger, such as the telescopic projector hanger provided by the present invention, so as to overcome the above-mentioned shortcomings of the prior art.

【Content of invention】

The object of the present invention is to provide a projector telescopic hanger that can flexibly adjust the spatial attitude of the projector.

To achieve this goal, the present invention adopts following technical scheme:

The telescopic hanger of the projector includes: a mounting frame, a rotating assembly, a hanging board frame arranged at the bottom of the mounting frame, a first push rod assembly for driving the rotating assembly to rotate left and right relative to the mounting frame, and a second push rod assembly for driving the rotating assembly to rotate forward and backward relative to the mounting frame. The second push rod assembly and the third push rod assembly drive the rotating assembly to rotate in the horizontal plane relative to the installation frame. The mounting frame has a base plate. A through hole is opened in the center of the base plate. The left and right sides of the base plate are bent upwards to form flaps. One of the flaps is provided with a first perforation hole, and the other flap is provided with a first threaded hole. Extend downwards to form vertical tongues, and the left and right sides of each vertical tongue are bent toward the direction of the other vertical tongue to form horizontal tongues. The base plate, the two vertical tongues and the corresponding two horizontal tongues are in common An accommodating space is defined, and a pair of ball sleeves are fixedly arranged therein. The ball sleeves have spherical inner walls, and the two ball sleeves are butted with each other, so that the two spherical inner walls jointly define a spherical space. The hanging plate frame includes a top plate with a hole in the center. The rotating assembly includes a rotating ball. The rotating ball has a spherical part. The top of the spherical part forms a top platform, and the spherical part is rotatably arranged in the above-mentioned spherical space. The rotating assembly further includes a first ball seat fixed on the top platform. The first push rod assembly includes a first push rod with external threads formed on the surface and a first ball fixed on the push rod. The first push rod passes through the first threaded hole on one of the flaps of the installation frame and the first through hole on the other flap, and the first ball is accommodated in the first ball seat.

Compared with the prior art, the present invention has the following advantages:

When the first push rod is rotated, the external thread on the first push rod cooperates with the first threaded hole, so that the first push rod moves axially left and right relative to the mounting frame. The first sphere fixed on the first push rod also moves axially left and right relative to the installation frame. Since the first ball is accommodated and confined within the first ball seat, the first ball will exert thrust on the first ball seat in the moving direction of the first push rod. Since the spherical portion of the rotating ball is disposed in the spherical space jointly defined by the two spherical inner walls of the two ball sleeves, the spherical portion rotates in the left and right direction relative to the spherical space. At the same time, since the hanging plate frame is sleeved on the mounting column, it actually causes the hanging plate frame to rotate in the left and right direction relative to the mounting frame, and finally realizes the adjustment of the left and right direction of the projector; similarly, the second push The rod assembly drives the rotating assembly to rotate back and forth relative to the mounting frame, and the third push rod assembly drives the rotating assembly to rotate in a horizontal plane relative to the mounting frame.

【Description of drawings】

FIG. 1 is an exploded perspective view of a telescopic hanger for a projector according to an embodiment of the present invention;

Fig. 2 is a three-dimensional assembly view of the telescopic hanger of the projector shown in Fig. 1 viewed from another angle;

Fig. 3 is the right view of the telescopic hanger of the projector shown in Fig. 1; and

FIG. 4 is a front view of the telescopic hanger of the projector shown in FIG. 1 .

【Detailed ways】

Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

1-4, according to an embodiment of the present invention, a projector telescopic hanger 100 includes a mounting frame 10, a rotating assembly 20, a hanging plate frame 30 arranged at the bottom of the mounting frame 10, and drives the rotating assembly 20 to be opposite to each other. The first push rod assembly 40 that rotates left and right on the installation frame 10, the second push rod assembly 50 that drives the rotation assembly 20 to rotate back and forth relative to the installation frame 10, and drives the rotation assembly 20 to rotate in a horizontal plane relative to the installation frame 10 The third push rod assembly 60.

The installation frame 10 has a base plate 12 , a through hole 122 is defined in the center of the base plate 12 , and left and right sides of the base plate 12 are bent upward to form a flap 124 . One of the flaps 124 defines a first through hole 1242 , and the other flap 124 defines a first threaded hole 1244 .

In addition, the front and rear sides of the base plate 12 respectively extend downwards to form vertical tongues 144 , and the left and right sides of each vertical tongue 144 are bent toward the direction of the other vertical tongue 144 to form a horizontal tongue 142 . One of the vertical tongues 144 defines a second through hole 1442 , and the other vertical tongue 144 defines a second threaded hole 1444 .

In addition, the base plate 12 , the two vertical tongues 144 and the corresponding two horizontal tongues 142 jointly define an accommodating space (not labeled), in which a pair of ball sockets 80 are fixedly disposed.

Each socket 80 has a spherical inner wall 82 . Moreover, the two ball sockets 80 are butted against each other, so that the two spherical inner walls 82 jointly define a spherical space (not labeled).

The hanging board frame 30 includes a top board 32 and side boards 34 bent downward from left and right sides of the top board 32 . In addition, the front and rear sides of the top board 32 are bent downward to form bent portions 38 . A hole 322 is defined in the center of the top plate 32 . Wherein, a third through hole 382 is defined in one bending portion 38 , and a third threaded hole (not labeled) is defined in the other bending portion 38 .

The rotating assembly 20 includes a rotating ball 22 having a spherical portion 222 and a mounting post 226 formed at the bottom of the spherical portion 222 . In addition, the top of the spherical portion 222 forms a top platform 224 . The mounting column 226 passes downward through the through hole 122 of the mounting frame 10 , then passes through the spherical space defined by the two spherical inner walls 82 , and finally passes through the through hole 322 of the hanging board frame 30 , so that the spherical part 222 rotates Set in the above-mentioned spherical space.

The rotating assembly 20 further includes a first ball seat 24 fixed on the top platform 224 of the rotating ball 22 .

The rotating assembly 20 further includes a horizontal driving plate 26 . The horizontal driving plate 26 includes a horizontal plate 262 , a positioning column 264 extending from the top of the horizontal plate 262 , and a pair of blocking walls 268 extending from the bottom of the horizontal plate 262 (refer to FIG. 1 ). A positioning hole 266 is longitudinally defined in the positioning column 264 . The positioning column 264 of the horizontal drive plate 26 passes through the through hole 322 from the bottom of the hanging plate frame 30, so that the mounting column 226 of the rotating ball 22 is tightly locked in the positioning hole 266, and The horizontal plate 262 is against the bottom of the top plate 32 of the hanging plate frame 30 .

The rotating assembly 20 further includes a second ball seat 28 fixed on the bottom of the mounting column 226 of the rotating ball 22 .

The first push rod assembly 40 is used to drive the rotating assembly 20 to rotate left and right relative to the installation frame 10 . The first push rod assembly 40 includes a first push rod 42 with external threads (not shown) formed on the surface, and a first ball 44 fixed on the push rod 42 . The first push rod 42 passes through the first threaded hole 1244 on one of the flaps 124 of the installation frame 10 and the first through hole 1242 on the other flap 124, and the first ball 44 is accommodated in the rotating Inside the first ball seat 24 of the assembly 20. When the first push rod 42 is rotated, the external thread on the first push rod 42 cooperates with the first threaded hole 1244, so that the first push rod 42 moves axially relative to the mounting bracket 10 left and right. move.

The second push rod assembly 50 is used to drive the rotating assembly 20 to rotate back and forth relative to the installation frame 10 . Similar to the first push rod assembly 40 , the second push rod assembly 50 includes a second push rod 52 with external threads (not shown) formed on the surface, and a second ball 54 fixed on the second push rod 52 . The second push rod 52 passes through the second threaded hole 1442 on one of the vertical tongues 144 of the mounting bracket 10 and the second through hole 1442 on the other vertical tongue 144, and the second ball 54 is accommodated in the second hole 1442 on the vertical tongue 144. Inside the second ball seat 24 of the rotating assembly 20. When the second push rod 52 is rotated, the external thread on the second push rod 52 cooperates with the second threaded hole 1442, so that the second push rod 52 moves forward and backward relative to the mounting frame 10 in the axial direction. move.

The third push rod assembly 60 is used to drive the rotating assembly 20 to rotate relative to the installation frame 10 in the horizontal plane. Similar in structure to the first push rod assembly 40 and the second push rod assembly 50, the third push rod assembly 60 includes a third push rod 62 with external threads (not shown) formed on the surface, fixed on the third push rod 62 on the third sphere 64 . The third push rod 62 passes through the third through hole 382 on one of the bent parts 38 of the hanging board frame 30 and the third threaded hole on the other bent part 38, and the third ball 64 is accommodated in the third threaded hole. Between a pair of blocking walls 268 at the bottom of the horizontal plate 262 of the horizontal driving plate 26. When the third push rod 62 is rotated, the external thread on the third push rod 62 cooperates with the third threaded hole, so that the third push rod 62 rotates back and forth relative to the hanging plate frame 30 .

The working process of the projector telescopic hanger 100 of the present invention will be described in detail below. First of all, it needs to be explained: the projector (not shown in the figure) that needs to adjust its posture is installed on the projector hanging plate 70 shown in FIG. 1 . The projector hanging plate 70 may include a bottom plate 72 and a pair of bent plates 74 formed on the bottom plate 72 . Horizontal folds 36 are formed on the left and right sides of each side plate 34 of the hanging panel frame 30 . By hanging the two horizontal folds 36 on the pair of bent plates 74, and locking the horizontal folds 36 with the corresponding bent plates 74, the entire projector telescopic hanger 100 is fixedly Hang on the projector hanging board 70. The mounting frame 10 is fixedly mounted on other devices, such as a cantilever (not shown).

Since the projector is fixed on the projector hanging plate 70 , and the hanging plate frame 30 is also fixed on the projector hanging plate 70 , therefore, adjusting the attitude of the projector is actually adjusting the attitude of the hanging plate frame 30 . Each adjustment process is described in detail below.

Firstly, by operating the first push rod assembly 40 , the left and right inclination angles of the hanging panel frame 30 are adjusted. For example, when the first push rod 42 is rotated, the external thread on the first push rod 42 cooperates with the first threaded hole 1244, so that the first push rod 42 moves axially relative to the mounting bracket 10 left and right. . During the above-mentioned movement in the left-right direction, the first ball 44 fixed on the first push rod 42 will also move axially left-right relative to the installation frame 10 . Since the first ball 44 is accommodated and confined in the first ball seat 24 , the first ball 44 will exert a pushing force on the first ball seat 24 in the moving direction of the first push rod 42 . Since the spherical portion 222 of the rotating ball 22 is disposed in the spherical space jointly defined by the two spherical inner walls 82 of the two ball sleeves 80 , under the action of thrust, the spherical portion 222 rotates in the left and right direction relative to the spherical space. At the same time, since the hanging board frame 30 is sleeved on the mounting column 226, it actually causes the hanging board rack 30 to rotate in the left and right direction relative to the installation frame 10, and finally realizes the projector fixed together with the hanging board rack 30 The left and right rotation of the hanging plate 70 and the projector (not shown) mounted on the projector hanging plate 70 relative to the installation frame 10 realizes the left and right attitude adjustment of the projector.

Secondly, by operating the second push rod assembly 50 , the front and rear inclination angles of the hanging board frame 30 can be adjusted. When the second push rod 52 is rotated, the external thread on the second push rod 52 cooperates with the second threaded hole 1444 , so that the second push rod 52 moves forward and backward relative to the installation frame 10 . During the movement in the forward and backward direction, the second ball 54 fixed on the second push rod 52 also moves forward and backward relative to the installation frame 10 . Since the second ball 54 is accommodated and confined within the second ball seat 28 , the second ball 54 will exert a pushing force on the second ball seat 28 in the moving direction of the second push rod 52 . Since the spherical portion 222 of the rotating ball 22 is disposed in the spherical space jointly defined by the two spherical inner walls 82 of the two ball sleeves 80 , under the action of thrust, the spherical portion 222 rotates forward and backward relative to the spherical space. Moreover, because the hanging board frame 30 is sleeved on the mounting column 226, it actually causes the hanging board frame 30 to rotate in the front and rear direction relative to the mounting frame 10, and finally realizes the projector hanging board 70 fixed together with the hanging board frame 30. And the projector (not shown) that is installed on the projector hanging plate 70 rotates back and forth relative to the installation frame 10, which realizes the attitude adjustment of the projector in the front and back directions.

Finally, the rotation angle of the hanging panel frame 30 in the horizontal direction is adjusted by operating the third push rod assembly 60 . When the third push rod 62 is rotated, the external thread on the third push rod 62 cooperates with the third threaded hole (not shown), so that the third push rod 62 moves forward and backward relative to the mounting frame 10 . During the movement in the forward and backward direction, the third ball 64 fixed on the third push rod 62 also moves forward and backward relative to the installation frame 10 . According to the introduction of the above structure, it can be seen that the third ball 64 is accommodated and limited between the two retaining walls 268 of the horizontal driving plate 26, so the third ball 64 will move against one of the third push rods 62 in the moving direction. The blocking wall 268 applies thrust. Simultaneously, since the horizontal driving plate 26 is fixed on the mounting column 226 of the rotating ball 22, and the spherical body portion 222 of the rotating ball 22 is arranged in the spherical space jointly defined by the two spherical inner walls 82 of the two ball sleeves 80 , so under the action of the above-mentioned thrust force, the spherical part 222 is caused to rotate in the horizontal direction relative to the spherical space. Moreover, because the hanging board frame 30 is sleeved on the mounting column 226, it actually causes the hanging board frame 30 to rotate in the horizontal direction relative to the mounting frame 10, and finally realizes the projector hanging board fixed together with the hanging board rack 30. 70 and the horizontal rotation of the projector (not shown) installed on the projector hanging plate 70 relative to the installation frame 10 realizes the horizontal posture adjustment of the projector.

In summary, through the adjustment functions of the above three push rod assemblies 40-60, the easy adjustment of the projector's posture in the front, rear, left and right, and horizontal directions is realized, instead of completely relying on the projector as in the prior art. Therefore, compared with the prior art, the projector telescopic hanger 100 provided by the present invention has a larger projector attitude adjustment range.

Preferably, a longitudinal limiting groove 822 is provided on the spherical inner wall 82 of each ball socket 80; positioning pins (not shown) are provided on the spherical portion 222 of the rotating ball 22, and the corresponding positioning pins are inserted into the corresponding longitudinal limiting grooves. In the position slot 822, the rotation range of the hanging board frame 30 relative to the mounting frame 10 can be limited.

Preferably, a positioning hole 2242 is provided in the top platform 224 of the rotating ball 22, so as to facilitate the positioning of the first ball 44, and at the same time, because the first ball 44 is partially arranged in the positioning hole 2242, it is convenient to rotate the ball 22 relative to the first sphere. A sphere 44 even rotates left and right relative to the entire mounting frame 10 .

Preferably, the peripheral portion of the top plate 32 of the hanging board frame 30 is provided with horizontal limiting grooves 324, such as the two horizontal limiting grooves 324 shown in FIG. 1; The position then forms a boss (not shown in the figure); the boss is inserted into the corresponding horizontal limiting groove 324 . When the third push rod assembly 60 adjusts the horizontal rotation angle of the hanging panel frame 30 relative to the installation frame 10 , the cooperation between the protrusion and the horizontal limiting groove 324 can realize limiting the angle adjustment range.

Preferably, the first push rod assembly 40 further includes a first knob 46 fixed at one end of the first push rod 42 , so as to easily and quickly rotate the first push rod 42 .

Preferably, the second push rod assembly 50 further includes a first knob 56 fixed at one end of the second push rod 52 , so as to easily and quickly rotate the second push rod 52 .

Similarly, the third push rod assembly 60 further includes a first knob 66 fixed at one end of the third push rod 62 , so as to easily and quickly rotate the third push rod 62 .

Therefore, the above-mentioned embodiment is a preferred embodiment of the present invention, but not only limited by the above-mentioned embodiment, any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principle of the present invention, All are equivalent replacement methods, and all are included in the protection scope of the present invention.

Claims (10)

1. the flexible suspension bracket of a projector, it is characterized in that comprising: scaffold, Runner assembly, be arranged on scaffold bottom the link plate frame, drive described Runner assembly with respect to the first push-rod assembly of scaffold left-right rotation, drive described Runner assembly with respect to the second push-rod assembly that rotates before and after the scaffold and drive the 3rd push-rod assembly that described Runner assembly rotates in horizontal plane with respect to scaffold, wherein

Described scaffold has substrate, the central authorities of described substrate offer through hole, the left and right sides of substrate is bent to form tabs up, offer the first perforation on one of them tabs, then offer the first tapped hole on another tabs, the both sides, front and back of described substrate extend to form respectively vertical tabs downwards, the left and right sides of described each vertical tabs is bent to form level tab towards the direction of another vertical tabs, described substrate, two vertical tabs and corresponding two level tab have defined a holding space jointly, be fixedly installed a pair of ball cover in it, described ball cover has spherical inner wall, described two ball covers dock mutually, thereby so that two spherical inner wall define diameter of Spherical Volume jointly;

Described link plate frame comprises that central authorities open the top board of perforating;

Described Runner assembly comprises roating sphere, and described roating sphere has spheroid section, and top platform is formed on the top of described spheroid section, and described spheroid section rotates and is arranged in the above-mentioned diameter of Spherical Volume; Described Runner assembly further comprises the first ball seat that is fixed on the top platform;

Described the first push-rod assembly comprises that the surface forms externally threaded the first push rod and is fixed on the first spheroid on the described push rod;

Described the first push rod passes the first tapped hole on one of them tabs of scaffold and the first perforation on another tabs, and the first spheroid is contained in the first ball seat.

2. the flexible suspension bracket of projector according to claim 1 is characterized in that: offer the second perforation on one of them vertical tabs of described scaffold, offer the second tapped hole on another vertical tabs; Erection column is formed on the spheroid section bottom of described roating sphere, and described erection column passes the through hole of scaffold down, then passes the common diameter of Spherical Volume that limits of two spherical inner wall, passes at last the perforating of link plate frame; Described Runner assembly further comprises the second ball seat, and it is fixed on the bottom of the erection column of described roating sphere; Described the second push-rod assembly comprises that the surface forms externally threaded the second push rod, is fixed on the second spheroid on described the second push rod; Described the second push rod passes the second tapped hole on one of them vertical tabs of scaffold and the second perforation on another vertical tabs, and described the second spheroid is contained in the second ball seat.

3. the flexible suspension bracket of projector according to claim 2, it is characterized in that: both sides, the front and back decurvation of the top board of described link plate frame forms kink, wherein, offers the 3rd perforation on the kink, then offers the 3rd tapped hole on another kink; Described Runner assembly further comprises horizontal drive plates, described horizontal drive plates comprises level board, the locating column that extends to form from the top of described level board and a pair of retaining wall that extends to form from the bottom of described level board, vertically offer positioning hole in the described locating column, described locating column passes described perforating from the bottom of described link plate frame, thereby so that the erection column of described roating sphere closely is stuck in the described positioning hole, described level board then is resisted against the bottom of the top board of described link plate frame; Described the 3rd push-rod assembly comprises that the surface forms externally threaded the 3rd push rod, is fixed on the 3rd spheroid on described the 3rd push rod; Described the 3rd push rod passes the 3rd perforation on one of them kink of link plate frame and the 3rd tapped hole on another kink, and described the 3rd spheroid is contained between described two retaining walls.

4. the flexible suspension bracket of projector according to claim 3 is characterized in that: offer the longitudinal spacing groove on the spherical inner wall of described each ball cover; In the spheroid section of described roating sphere locating stud is set, corresponding locating stud inserts in the corresponding longitudinal spacing groove.

5. the flexible suspension bracket of projector according to claim 4, it is characterized in that: offer positioning hole in the top platform of described roating sphere, described the first spheroid is arranged in the described positioning hole.

6. the flexible suspension bracket of projector according to claim 5, it is characterized in that: the Horizontal limiting groove is offered in the peripheral part of the top board of described link plate frame; Corresponding site on the level board of described horizontal drive plates then forms projection; Described projection inserts in the corresponding Horizontal limiting groove.

7. the flexible suspension bracket of projector according to claim 6, it is characterized in that: described the first push-rod assembly further comprises the first knob of one of them end that is fixed on described the first push rod.

8. the flexible suspension bracket of projector according to claim 6, it is characterized in that: described the second push-rod assembly further comprises the first knob of one of them end that is fixed on described the second push rod.

9. the flexible suspension bracket of projector according to claim 6, it is characterized in that: described the 3rd push-rod assembly further comprises the first knob of one of them end that is fixed on described the 3rd push rod.

10. the flexible suspension bracket of projector according to claim 6, it is characterized in that: the left and right sides decurvation of the top board of described link plate frame forms side plate, and the left and right sides of each side plate forms horizontal flanging.

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