CN213982604U

CN213982604U - Support device for projector

Info

Publication number: CN213982604U
Application number: CN202022699376.XU
Authority: CN
Inventors: 陈苒凌; 李晓伟; 魏童生
Original assignee: Beijing Yunduan Culture And Media Co ltd
Current assignee: Beijing Yunduan Culture And Media Co ltd
Priority date: 2020-11-19
Filing date: 2020-11-19
Publication date: 2021-08-17
Anticipated expiration: 2030-11-19

Abstract

The application relates to a supporting device of a projector, belonging to the technical field of projection equipment and comprising a supporting plate and a lifting mechanism arranged on the supporting plate; the lifting mechanism comprises a sleeve, a rack arranged in the sleeve and a driving component; the sleeve is vertically and fixedly connected to the supporting plate, a yielding port is formed in the side wall of the sleeve, and teeth of the rack face the yielding port; a placing plate is arranged at one end of the rack, which is exposed out of the sleeve; the driving assembly comprises a transmission shaft and a main gear, the transmission shaft is rotatably connected with the supporting plate, the main gear is fixedly connected to the transmission shaft, and the main gear is meshed with the rack at the abdicating opening. This application has the effect that the board was placed to the lift projector of placing to the adjustment height adapts to the effect of different projection environment demands.

Description

Support device for projector

Technical Field

The present application relates to the field of projector equipment, and more particularly, to a projector support apparatus.

Background

The projector is a mechanical device which reproduces images and sounds recorded on a film in cooperation with a screen, a loudspeaker and the like.

The projector is often used in various places, and for the moving film showing, the support mode of the projector is very simple, and the projector is usually placed on a simple support platform, but different application scenes, a support device with adjustable height is needed to achieve good showing effect.

In view of the above-mentioned related art, the inventor considers that the application scene of the projector is different, and a supporting device for adjusting the height is required.

SUMMERY OF THE UTILITY MODEL

In order to improve the difference of application scenes of the projector, a supporting device with adjustable height is needed, and the application provides a supporting device of the projector.

The application provides a supporting arrangement of projector adopts following technical scheme:

a supporting device comprises a supporting plate and a lifting mechanism arranged on the supporting plate;

the lifting mechanism comprises a sleeve, a rack arranged in the sleeve and a driving assembly; the sleeve is vertically and fixedly connected to the supporting plate, a yielding port is formed in the side wall of the sleeve, and teeth of the rack face the yielding port;

a placing plate is arranged at one end of the rack, which is exposed out of the sleeve;

the driving assembly comprises a transmission shaft and a main gear, the transmission shaft is rotatably connected with the supporting plate, the main gear is fixedly connected to the transmission shaft, and the main gear is meshed with the rack at the abdicating opening.

Through adopting above-mentioned technical scheme, when using the projector, through elevating system height-adjusting, conveniently adjust the required height of projector projection in-process for projector and projection screen cooperate, reach good show effect, bring good experience for the sight.

Optionally, the driving assembly further comprises a slave gear, the diameter of the master gear is smaller than that of the slave gear, the slave gear is meshed with the master gear, and the slave gear is meshed with the rack.

Through adopting above-mentioned technical scheme, the master gear drives from gear revolve, and master gear motion cycle is short, follows gear motion cycle length, and when the master gear drove from the gear, the master gear rotational speed is obviously faster than from the gear, and the rotational speed is faster more, and the moment of torsion is smaller, and the effect that needs is smaller, so can be laborsaving for the staff, improve work efficiency.

Optionally, the side wall of the rack is hinged with a plurality of balls, the side wall of the sleeve is provided with a through groove for placing the balls, and the balls slide in the through groove.

Through adopting above-mentioned technical scheme, the setting up of ball reduces rack vertical motion in-process and sleeve pipe lateral wall and produces relative friction, improves the life of rack.

Optionally, a plurality of supporting columns are fixedly connected to the placing plate, a plurality of sleeves are mounted on the supporting plates, and the supporting columns are inserted into the sleeves.

Through adopting above-mentioned technical scheme, when the projector rose required height, the support column vertically moved in the sleeve played limiting displacement, and simultaneously, the support column played the effect of support to placing the board for it is more firm at the lift in-process to place the board, reduces and places the probability that the board appeared the slope.

Optionally, the supporting plate is fixedly connected with a plurality of supporting legs, and one end of each supporting leg, which is far away from the supporting plate, is provided with a foot sleeve.

Through adopting above-mentioned technical scheme, the setting of supporting leg plays the supporting role to the backup pad, and the setting of podotheca reduces the friction between supporting leg and the ground, improves the life who uses the supporting leg, simultaneously, avoids the supporting leg to slide at subaerial and causes the noise.

Optionally, a fixing assembly is arranged on the placing plate, and the fixing assembly comprises a screw rod and a clamping piece;

the placing plate is symmetrically provided with mounting grooves, and the peripheral wall of the placing plate is provided with threaded holes communicated with the mounting grooves;

the lead screw is arranged in the threaded hole in a penetrating mode and is in threaded connection with the threaded hole, and the clamping piece is connected with the lead screw in the mounting groove in a rotating mode.

Through adopting above-mentioned technical scheme, realize the fixed action to the projector, reduce the lift in-process, the projector rocks, influences the show effect.

Optionally, one end of the transmission shaft, which is far away from the main gear, is fixedly connected with a first hand wheel; and one end of the screw rod, which is far away from the clamping piece, is fixedly connected with a second hand wheel.

By adopting the technical scheme, the first hand wheel is rotated to drive the transmission shaft to rotate, so that driving force is provided for the rotation of the transmission shaft; and the second hand wheel is rotated to drive the screw rod to rotate, so that the projector is clamped and fixed.

Optionally, the lifting mechanism further comprises a limiting assembly, the limiting assembly comprises a ratchet wheel and a pawl, the ratchet wheel is fixedly connected to the transmission shaft, the pawl is rotatably connected to the supporting plate, and the pawl is connected with the ratchet wheel in a clamping mode.

By adopting the technical scheme, the ratchet wheel and the pawl are engaged and move in the same direction, and when the placing plate is lifted to the required height, the transmission shaft cannot move in the reverse direction, so that the limiting effect is achieved; when the height of the placing plate needs to be reduced, the pawl is stirred, and the hand wheel is rotated reversely, so that the rack moves downwards in the vertical direction and is adjusted to the required height.

In summary, the present application includes at least one of the following beneficial technical effects:

1. through elevating system's setting, be convenient for more adjust the lift height of projector, when using the projector, will place the board through elevating system and prop up, conveniently adjust the required height of projector projection in-process for projector and projection screen cooperate, reach good projection effect, bring good experience for the sight.

2. Through the arrangement of the balls, the probability of relative friction between the rack and the sleeve in the moving process of the rack is reduced, the rack is protected more favorably, and the service life of the rack is prolonged;

3. the main gear drives the driven gear to move through the arrangement of the main gear and the driven gear, the rotating speed of the main gear is higher than that of the driven gear, the higher the rotating speed is, the lower the torque is, and the lower the required acting force is, so that the labor can be saved, and the working efficiency is improved.

Drawings

Fig. 1 is a schematic structural diagram of a support device in an embodiment of the present application.

Fig. 2 is a schematic view of the internal structure of the support device in the embodiment of the present application.

Fig. 3 is an enlarged view of a in fig. 2.

Description of reference numerals: 1. a support plate; 11. a sleeve; 2. a lifting mechanism; 21. a sleeve; 211. a let position port; 212. a through groove; 22. a rack; 221. a hinge hole; 222. a ball bearing; 23. a drive assembly; 231. a drive shaft; 232. a main gear; 233. a slave gear; 234. a first hand wheel; 24. a fixing plate; 25. a limiting component; 251. a ratchet wheel; 252. a pawl; 3. placing the plate; 31. a support pillar; 32. a fixing assembly; 321. a lead screw; 322. a clip; 323. a second hand wheel; 33. mounting grooves; 4. supporting legs; 41. a foot cover; 5. a projector.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a support device of a projector. Referring to fig. 1, the supporting device includes a supporting plate 1, a lifting mechanism 2, and a placing plate 3 on which a projector 5 is placed; the interior cavity of backup pad 1, elevating system 2 installs on the interior bottom surface of backup pad 1, places board 3 and installs on elevating system 2, and elevating system 2 is adjustable places the height of board 3 to the demand that adapts to different projection scenes.

Referring to fig. 2 and 3, the lifting mechanism 2 includes a sleeve 21, a rack 22 and a driving assembly 23, the sleeve 21 is vertically fixedly connected to the center of the inner bottom surface of the support plate 1, a let position opening 211 is formed in the side wall of the sleeve 21, the rack 22 is installed inside the sleeve 21, teeth of the rack 22 face the let position opening 211, in order to facilitate sliding between the rack 22 and the sleeve 21, a plurality of hinge holes 221 can be formed in the side wall of the rack 22, a plurality of balls 222 are embedded in the hinge holes 221, the balls 222 are spherically hinged with the hinge holes 221, a through groove 212 for the balls 222 to be inserted is formed in the inner wall of the sleeve 21, and during the movement process of the rack 22, friction between the rack 22 and the inner wall of the sleeve 21 is reduced, and damage is caused to the sleeve 21.

Referring to fig. 2 and 3, the driving assembly 23 includes a transmission shaft 231 and a main gear 232, the transmission shaft 231 is disposed through the peripheral wall of the supporting plate 1, one end of the transmission shaft 231 located outside the supporting plate 1 is coaxially and fixedly connected with a first hand wheel 234, a fixing plate 24 is vertically disposed on the inner bottom surface of the supporting plate 1, the transmission shaft 231 is far away from the first hand wheel 234 and rotatably connected with the fixing plate 24 through a bearing, the main gear 232 is coaxially and fixedly connected with a rotating shaft on the transmission shaft 231 near the fixing plate 24, the rotating shaft is also rotatably connected with a driven gear 233 coaxially and fixedly connected with the driven gear 233, the diameter of the main gear 232 is smaller than that of the driven gear 233, the main gear 232 is meshed with the driven gear 233, the driven gear 233 is meshed with the rack 22 through the position-giving opening 211, the main gear 232 is driven by rotating the transmission shaft 231 to reciprocate along the sleeve 21 with the driven gear 233, so as to realize the lifting and lowering of the placing plate 3, to meet the application requirements of the projector 5 on the placing plate 3; here, the gear 233 is provided, so that the transmission shaft 231 can be rotated more easily, and the work efficiency can be improved.

Referring to fig. 2, the lifting mechanism 2 further includes a limiting assembly 25, the limiting assembly 25 includes a ratchet wheel 251 and a pawl 252, the ratchet wheel 251 is coaxially and fixedly connected to the position of the transmission shaft 231 outside the support plate 1, the position of the support plate 1 close to the transmission shaft 231 is rotatably connected to a rotating shaft through a bearing, the pawl 252 is mounted on the rotating shaft, the ratchet wheel 251 is engaged with the pawl 252 to achieve a limiting effect, and the lifting height of the placement plate 3 is further limited.

Referring to fig. 1 and 2, 1 upper surface of backup pad has three sleeve 11 along the even vertical rigid coupling of circumference, places 3 lower surface rigid couplings of board and has three support column 31, and support column 31 and the setting of sleeve 11 one-to-one, support column 31 insert and establish in sleeve 11, play limiting displacement to the horizontal position of placing board 3, and then make and place 3 lifts more stably.

Referring to fig. 2 and 3, in order to make the placement of the projector 5 on the placement plate 3 more stable, a fixing component 32 is disposed on the placement plate 3, the fixing component 32 includes a screw 321 and a clamping piece 322, two mounting grooves 33 are disposed on the upper surface of the placement plate 3 based on axial symmetry, two threaded holes are disposed on the circumferential wall of the placement plate 3 along radial symmetry, the two threaded holes are respectively communicated with the two mounting grooves 33, the screw 321 penetrates through the threaded holes to be disposed in the mounting grooves 33, the clamping piece 322 is vertically disposed in the mounting grooves 33 and sleeved on the screw 321, the clamping piece 322 is rotatably connected with the screw 321 through a bearing, and the screw 321 penetrates through one end of the circumferential surface of the placement plate 3 and is fixedly connected with a second hand wheel 323.

When the device is used, the projector 5 is placed between the two clamping pieces 322, the second hand wheel 323 is rotated to drive the screw 321 to press the clamping pieces 322 against the side walls of the projector 5, so that the clamping and fixing of the projector 5 are realized, and the mounting of the projector 5 on the placing plate 3 is more stable.

Referring to fig. 1, the supporting device further comprises three supporting legs 4, the supporting legs 4 are evenly fixedly connected to the lower surface of the supporting plate 1, foot sleeves 41 are arranged at the lower ends of the supporting legs 4, friction between the supporting legs 4 and the ground can be reduced due to the arrangement of the foot sleeves 41, and the service lives of the supporting legs 4 are prolonged.

The implementation principle of the supporting device of the projector in the embodiment of the application is as follows: when the supporting device is used, the projector 5 is placed on the placing plate 3, the fixing assembly 32 is used for clamping and fixing the projector 5, and the lifting mechanism 2 is adjusted to adjust the height of the projector 5, so that the requirements of different projection environments are met.

Adopt this embodiment, through strutting arrangement's setting, be convenient for more adjust the height of projector for the high looks adaptation of projector and projection screen, with the demand that adapts to different projection environment, bring good experience of vwatching for spectator.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A support device for a projector, characterized by: comprises a supporting plate (1) and a lifting mechanism (2) arranged on the supporting plate (1);

the lifting mechanism (2) comprises a sleeve (21), a rack (22) arranged in the sleeve (21) and a driving component (23); the sleeve (21) is vertically and fixedly connected to the support plate (1), a yielding opening (211) is formed in the side wall of the sleeve (21), and teeth of the rack (22) face the yielding opening (211);

a placing plate (3) is arranged at one end of the rack (22) exposed out of the sleeve (21);

the driving assembly (23) comprises a transmission shaft (231) and a main gear (232), the transmission shaft (231) is rotatably connected with the supporting plate (1), the main gear (232) is fixedly connected onto the transmission shaft (231), and the main gear (232) is meshed with the rack (22) at the position of the abdicating opening (211).

2. A projector support apparatus as defined in claim 1, wherein: the driving assembly (23) further comprises a slave gear (233), the diameter of the slave gear (233) is larger than that of the master gear (232), the slave gear (233) is positioned between the rack (22) and the master gear (232), the slave gear (233) is meshed with the master gear (232), and the slave gear (233) is meshed with the rack (22).

3. A projector support apparatus as defined in claim 1, wherein: the side wall of the rack (22) is hinged with a plurality of balls (222), the side wall of the sleeve (21) is provided with a through groove (212) for placing the balls (222), and the balls (222) slide in the through groove (212).

4. A projector support apparatus as defined in claim 1, wherein: a plurality of supporting columns (31) are fixedly connected to the placing plate (3), a plurality of sleeves (11) are installed on the supporting plate (1), and the supporting columns (31) are inserted into the sleeves (11).

5. A projector support apparatus as defined in claim 1, wherein: a plurality of supporting legs (4) are fixedly connected to the supporting plate (1), and one end, far away from the supporting plate (1), of each supporting leg (4) is provided with a foot sleeve (41).

6. A projector support apparatus as defined in claim 4, wherein: a fixing component (32) is arranged on the placing plate (3), and the fixing component (32) comprises a screw rod (321) and a clamping piece (322);

mounting grooves (33) are symmetrically formed in the placing plate (3), and threaded holes communicated with the mounting grooves (33) are formed in the peripheral wall of the placing plate (3);

the lead screw (321) penetrates through the threaded hole and is in threaded connection with the threaded hole, and the clamping piece (322) is rotatably connected with the lead screw (321) in the mounting groove (33).

7. A projector support apparatus as defined in claim 6, wherein: a first hand wheel (234) is fixedly connected to one end, away from the main gear (232), of the transmission shaft (231); and a second hand wheel (323) is fixedly connected to one end of the screw rod (321) far away from the clamping piece (322).

8. A projector support apparatus as defined in claim 1, wherein: the lifting mechanism (2) further comprises a limiting assembly (25), the limiting assembly (25) comprises a ratchet wheel (251) and a pawl (252), the ratchet wheel (251) is fixedly connected to the transmission shaft (231), the pawl (252) is rotatably connected to the supporting plate (1), and the pawl (252) is clamped with the ratchet wheel (251).