CN112918910A - Corner protection mechanism - Google Patents
Corner protection mechanism Download PDFInfo
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- CN112918910A CN112918910A CN202110267975.0A CN202110267975A CN112918910A CN 112918910 A CN112918910 A CN 112918910A CN 202110267975 A CN202110267975 A CN 202110267975A CN 112918910 A CN112918910 A CN 112918910A
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- gear
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- fixing
- rotating shaft
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- 230000007246 mechanism Effects 0.000 title claims abstract description 61
- 230000001012 protector Effects 0.000 claims abstract description 63
- 239000011324 bead Substances 0.000 claims description 47
- 230000000670 limiting effect Effects 0.000 claims description 41
- 230000000149 penetrating effect Effects 0.000 claims description 17
- 239000002184 metal Substances 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 abstract description 9
- 230000009471 action Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D59/00—Plugs, sleeves, caps, or like rigid or semi-rigid elements for protecting parts of articles or for bundling articles, e.g. protectors for screw-threads, end caps for tubes or for bundling rod-shaped articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
- B65D85/68—Containers, packaging elements or packages, specially adapted for particular articles or materials for machines, engines or vehicles in assembled or dismantled form
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
- Toys (AREA)
Abstract
A corner guard mechanism comprising: the device comprises a rotating shaft, a protective angle, a ratchet wheel device for controlling the rotating shaft to rotate towards one direction, a button for driving the ratchet wheel device to control the rotating shaft to rotate for a certain angle after being pressed every time, and a protective angle control device which is connected with the rotating shaft and controls the protective angle to extend and retract according to the rotating frequency interval of the rotating shaft. The corner protection mechanism is arranged on the LED display screen, the corner protection mechanisms are arranged at four corners of the LED display screen, the ratchet wheel device is driven to control the rotating shaft to rotate for a certain angle after the key is pressed each time, the ratchet wheel device controls the rotating shaft to rotate towards one direction, and the corner protection control device controls the corner protection to extend and retract at intervals according to the rotating times of the rotating shaft. The corner protector mechanism is simple in structure, only needs to be installed once, does not need to be installed before the LED display screen is transported and installed each time, does not need to be dismantled after the corner protector is installed, and saves labor and time. When the protective angle is used, the protective angle can be controlled to extend out or retract only by pressing the key, so that the operation is simple and the use is very convenient.
Description
Technical Field
The invention relates to the technical field of transportation protection, in particular to a corner protection mechanism.
Background
The current LED display screen has large area and heavy weight, is often used in temporary display occasions, and needs to be frequently carried, moved, installed and used during use. In order to protect the LED display screen from collision and damage during transportation and installation, the four corners of the LED display screen are usually protected by installing customized metal corner protectors at the four corners; in order not to influence the display effect, when the LED display screen is transported to a specified position and is well installed, the corner protector is detached, the installation and the detachment of the corner protector are very troublesome, time and labor are wasted, and the improvement is needed.
Disclosure of Invention
The invention aims to avoid the defects in the prior art and provides the corner protection mechanism which is simple to operate, convenient to use and free of disassembly.
A corner guard mechanism comprising: the corner protector comprises a rotating shaft, a corner protector, a ratchet wheel device for controlling the rotating shaft to rotate towards one direction, a key for driving the ratchet wheel device to control the rotating shaft to rotate for a certain angle after being pressed every time, and a corner protector control device connected with the rotating shaft and used for controlling the corner protector to extend and retract according to the rotating frequency interval of the rotating shaft.
Preferably, after the key is pressed each time, the ratchet device is driven to control the rotating angle of the rotating shaft to be 90 degrees, and the ratchet device controls the rotating shaft to rotate clockwise.
Preferably, the ratchet device comprises a gear brush with one end connected with the button, a base with a first open cavity, a fixed cover arranged on the first open cavity, a first cover plate with a first fixed hole for penetrating and fixing the rotating shaft and driving the rotating shaft to rotate, a first gear fixed on the base for limiting the counterclockwise rotation of the first gear, a cylinder arranged on the first cover plate, and a first spring sleeved on the cylinder, wherein the first gear is provided with a first gear, the other end of the gear brush is provided with a first rack meshed with the first gear, the top of the base is provided with a through hole for penetrating and fixing the button, the base is provided with a first shaft hole for movably fixing the first gear, one end of the button is arranged on the first spring, and the other end of the button extends out of the through hole, the first gear is arranged on the first spring, and the other end of the button extends out of the through hole, The gear brush and the key are arranged in the first opening cavity.
Preferably, the first gear axial direction comprises a gear tooth part and a cylindrical limiting part, the gear tooth part is provided with the first gear teeth, the first cover plate is provided with a vertically arranged fixing plate with a fifth shaft hole penetrating through the first gear, the limiting device comprises a bayonet lock with a fixing shaft and a metal torsion spring with a circular ring part and two connecting rods connected with the circular ring part, one end of the bayonet lock is movably fixed between the outer side of the base and the fixing plate, the cylindrical limiting part penetrates through the first shaft hole and is arranged at the outer side of the base, four limiting convex ribs are axially and uniformly arranged at intervals at the cylindrical limiting part, the other end of the bayonet lock is clamped at the right lower end of the cylindrical limiting part, the outer side of the base is provided with a second shaft hole, the fixing plate is provided with a third shaft hole, and two ends of the fixing shaft are just fixed in the second, the circle portion is sleeved on the fixing shaft, the two connecting rods are respectively provided with a fixing rod towards the outer side, the outer side of the base is provided with a second fixing hole, the bayonet lock is provided with a third fixing hole, and the two fixing rods are respectively inserted and fixed in the second fixing hole and the third fixing hole.
Preferably, the lower end of the key is provided with a first blind hole sleeved on the first spring, and the length of the first spring is greater than the depth of the first blind hole.
Preferably, the key is provided with a fourth fixing hole, the upper part of one end of the gear brush is provided with a fifth fixing hole, and the corner protection mechanism is further provided with a first fixing pin which is sequentially inserted into the fourth fixing hole and the fifth fixing hole; the lower part of the one end of gear brush is provided with first recess, the button the position correspondence department in first recess is provided with the second recess, angle bead mechanism still is provided with second spring both ends card respectively go into first recess with in the second recess.
Preferably, the number of the angle bead and the angle bead control device is two, and the angle bead control devices are arranged at two ends of the rotating shaft.
Preferably, the corner protector control device comprises a third spring, a corner protector base with a second opening cavity and a third opening cavity which are communicated, a second cover plate covering the second opening cavity and the third opening cavity, a sliding pin, and a second gear, wherein a sixth fixing hole for fixing the rotating shaft in a penetrating manner is arranged in the middle of the second cover plate, the sliding pin is arranged on the second opening cavity and the third opening cavity, second gear teeth with 90-degree radian are respectively arranged at two ends of the second cover plate, the sliding pin comprises a sliding pin body movably arranged in the second opening cavity, a second rack meshed with the second gear teeth and a connecting plate connected with the corner protector, a second blind hole is arranged at one end, inserted into the second opening cavity, of the sliding pin body, a first bar-shaped groove is arranged at the second opening cavity of the corner protector base, the corner protector is arranged outside the corner protector base, the connecting plate is arranged in the first bar-shaped groove in a penetrating manner, and the length of the third spring is greater than the depth, the third spring set up in the second blind hole, the angle bead seat with second apron junction is provided with the activity and fixes the fourth shaft hole of sixth fixed orifices, second open cavity with be provided with second bar groove between the third open cavity, the second rack set up in the third open cavity, the sliding pin body with second rack junction wears to locate second bar groove.
Preferably, the corner protector is provided with a first connecting hole, the connecting plate is provided with a second connecting hole, and the corner protector mechanism is further provided with a second fixing pin which sequentially penetrates through the first connecting hole and the second connecting hole; the angle bead seat is provided with a threaded hole, the second cover plate is provided with a seventh fixing hole corresponding to the threaded hole, and the angle bead mechanism is further provided with a screw penetrating through the seventh fixing hole and then screwed into the threaded hole.
Preferably, the second open cavity is cylindrical, and the slide pin body is cylindrical and matched with the second open cavity; the angle bead is a metal angle bead.
Compared with the prior art, the invention has the following advantages: the corner protection mechanism is arranged on the LED display screen, the corner protection mechanisms are arranged at four corners of the LED display screen, the ratchet wheel device is driven to control the rotating shaft to rotate for a certain angle after the key is pressed each time, the ratchet wheel device controls the rotating shaft to rotate towards one direction, and the corner protection control device controls the corner protection to extend and retract at intervals according to the rotating times of the rotating shaft.
When a key of the ratchet wheel device is pressed by the first corner protection mechanism, the ratchet wheel device is driven to control the rotating shaft to rotate for a certain angle in one direction, and the corner protection control device controls the extending of the corner protection; when the key of the ratchet device is pressed for the second time, the ratchet device is driven to control the rotating shaft to continuously rotate for a certain angle in one direction, and the angle bead control device controls the angle bead to retract; when the key of the ratchet device is pressed for the third time, the ratchet device is driven to control the rotating shaft to continuously rotate for a certain angle in one direction, the angle bead control device controls the angle bead to extend out, and therefore the operation is very convenient and simple. The rotating shaft of the corner protection mechanism can only rotate towards one direction, and can rotate clockwise or anticlockwise at each time.
When the LED display screen is disassembled, assembled and transported, the protection corners are controlled to extend out, and four corners of the LED display screen are protected; after the LED display screen is installed, the angle bead is controlled to retract, the display effect of the LED display screen cannot be influenced, and the LED display screen is neat and attractive. In conclusion, the corner protector mechanism disclosed by the invention is simple in structure, only needs to be installed once, does not need to be installed before the LED display screen is transported and installed every time, does not need to be dismantled after the corner protector is installed, and is labor-saving and time-saving. When the protective angle is used, the protective angle can be controlled to extend out or retract only by pressing the key, so that the operation is simple and the use is very convenient.
Drawings
The invention is further illustrated by means of the attached drawings, the examples of which are not to be construed as limiting the invention in any way.
FIG. 1 is a schematic view of an extended corner protector configuration of a corner protector mechanism of the present invention;
FIG. 2 is a schematic view of a corner guard mechanism of the present invention with the corner guard retracted;
FIG. 3 is a schematic structural diagram of a ratchet device when a key is pressed by the corner protection mechanism of the present invention;
FIG. 4 is a schematic cross-sectional view of the ratchet device when the key is pressed in the corner protection mechanism of the present invention;
FIG. 5 is a schematic cross-sectional view of the ratchet device of the corner protection mechanism of the present invention when pressing the key;
FIG. 6 is a schematic structural diagram of a ratchet mechanism of a corner protection mechanism according to the present invention during key rebound;
FIG. 7 is a schematic cross-sectional view of the ratchet mechanism of the present invention during key rebound;
FIG. 8 is an exploded view of the ratchet mechanism of a corner guard according to the present invention;
FIG. 9 is an exploded view of the ratchet mechanism of a corner guard according to the present invention;
FIG. 10 is an exploded view of the ratchet mechanism of a corner guard according to the present invention;
FIG. 11 is a schematic view of a gear brush and key assembly of a corner guard mechanism of the present invention;
FIG. 12 is an exploded view of the gear brush and key of a corner guard mechanism of the present invention;
FIG. 13 is a schematic cross-sectional view of a corner guard mechanism of the present invention with a gear brush and key installed;
fig. 14 is an exploded view schematically illustrating a corner guard control device of a corner guard mechanism according to the present invention;
FIG. 15 is an exploded view of the corner protector control device of a corner protector mechanism of the present invention with a slide pin installed;
FIG. 16 is a schematic view of the corner protector control device of a corner protector mechanism according to the present invention showing the retracted configuration of the corner protector;
FIG. 17 is a schematic cross-sectional view of a corner guard control device of a corner guard mechanism of the present invention with the corner guard retracted;
FIG. 18 is a schematic view of the configuration of the corner protector extension of the corner protector control device of a corner protector mechanism of the present invention;
fig. 19 is a schematic cross-sectional view of an extension of a corner guard control device of a corner guard mechanism according to the present invention.
Detailed Description
The invention will be further described with reference to the following examples and the accompanying drawings:
a corner guard mechanism, as shown in fig. 1 to 19, comprising: the angle protection device comprises a rotating shaft 10, a corner protection 11, a ratchet gear 12 for controlling the rotating shaft 10 to rotate towards one direction, a key 13 for driving the ratchet gear 12 to control the rotating shaft 10 to rotate for a certain angle after each pressing, and a corner protection control device 14 connected with the rotating shaft 10 and used for controlling the corner protection 11 to extend and retract at intervals according to the rotating times of the rotating shaft 10.
The corner protection mechanism is arranged on an LED display screen, the corner protection 11 is arranged at four corners of the LED display screen, the ratchet wheel device 12 is driven to control the rotating shaft 10 to rotate for a certain angle after the key 13 is pressed each time, the ratchet wheel device 12 controls the rotating shaft 10 to rotate towards one direction, and the corner protection control device 14 controls the corner protection 11 to extend out and retract according to the rotating times of the rotating shaft 10 at intervals.
When a key 13 of a ratchet device 12 is pressed by a first corner protection mechanism, the ratchet device 12 is driven to control a rotating shaft 10 to rotate for a certain angle in one direction, and a corner protection control device 14 controls a corner protection 11 to extend out; when the key 13 of the ratchet device 12 is pressed for the second time, the ratchet device 12 is driven to control the rotating shaft 10 to continue to rotate for a certain angle in one direction, and the angle bead control device 14 controls the angle bead 11 to retract; when the key 13 of the ratchet device 12 is pressed for the third time, the ratchet device 12 is driven to control the rotating shaft 10 to rotate a certain angle continuously in one direction, the angle bead control device 14 controls the angle bead 11 to extend, and in this way, the angle bead control device 14 controls the angle bead 11 to extend or retract every time the key 13 is pressed, so that the operation is very convenient and simple. The rotating shaft 10 of the corner protection mechanism of the invention can only rotate towards one direction, and can rotate clockwise or anticlockwise at each time.
When the LED display screen is disassembled, assembled and transported, the protective corners 11 are controlled to extend out to protect four corners of the LED display screen; after the LED display screen is installed, the angle bead 11 is controlled to retract, the display effect of the LED display screen cannot be influenced, and the LED display screen is neat and attractive. In conclusion, the corner protection mechanism is simple in structure, only needs to be installed once, does not need to be installed with the corner protection 11 before the LED display screen is transported and installed every time, does not need to be dismantled after the corner protection 11 is installed, and saves labor and time. When in use, the protective angle 11 can be controlled to extend or retract only by pressing the key 13, so that the operation is simple and the use is very convenient.
Preferably, the ratchet device 12 is driven to control the rotation angle of the rotating shaft 10 to be 90 degrees after each pressing of the key 13, and the ratchet device 12 controls the rotating shaft 10 to rotate clockwise. After the key 13 is pressed each time, the ratchet device 12 controls the rotating shaft 10 to rotate clockwise by 90 degrees; when the key 13 is pressed for the first time, the rotating shaft 10 rotates clockwise by 90 degrees, and the angle bead 11 extends out; the key 13 is pressed for the second time, the rotating shaft 10 rotates clockwise by 90 degrees, and the angle bead 11 retracts; that is, when the rotating shaft 10 rotates by half a turn, the angle bead 11 completes the extending and retracting action of one cycle.
Preferably, as shown in fig. 3 to 13, the ratchet device 12 includes a gear brush 15 having one end connected to the key 13, a base 16 having a first open cavity 17, a first cover plate 18 fixedly covering the first open cavity 17, a first gear 20 having a first fixing hole 19 penetrating the fixed shaft 10 and driving the shaft 10 to rotate, a limiting device 21 fixed to the base 16 and limiting the first gear 20 to rotate counterclockwise, a cylinder 22 disposed on the first cover plate 18, and a first spring 23 sleeved on the cylinder 22, wherein the first gear 20 has a first gear 24, the other end of the gear brush 15 has a first rack 25 engaged with the first gear 24, the top of the base 16 has a through hole 26 penetrating the key 13, the base 16 has a first shaft hole 27 movably fixing the first gear 20, one end of the key 13 is disposed on the first spring 23, and the other end of the key extends out of the through hole 26, the first gear 20, The gear brush 15 and the key 13 are disposed in the first open cavity 17.
When the push button 13 is not pushed, as shown in fig. 6 and 7, the first spring 23 is in a free state, the gear brush 15 is positioned at the upper right of the first gear 20, and the lower portion of the first rack 25 is engaged with the upper right portion of the first gear 24. When the key 13 is pressed, as shown in fig. 2 to 4, because the gear brush 15 is connected with the key 13, the gear brush 15 moves downward under the driving of the key 13, because the first rack 25 is engaged with the first gear 24, the first gear 20 rotates clockwise, because the rotating shaft 10 is fixed in the first fixing hole 19 in a penetrating manner, the rotating shaft 10 is driven to rotate clockwise by the rotation of the first gear 20, at this time, the first spring 23 is compressed by the pressure of the key 13, and the downward movement of the key 13 drives the downward movement of the first rack 25 to be just the range that the first gear 20 rotates 90 degrees. The rotating shaft 10 rotates clockwise, and the angle bead control device 14 controls the angle bead 11 to retract. When the key 13 is released, as shown in fig. 5 and 6, the first spring 23 of the key 13 moves upwards, the gear brush 15 moves upwards under the driving of the key 13, and the key 13 and the gear brush 15 are reset. Since the limiting device 21 limits the first gear 20 to rotate anticlockwise, the gear brush 15 moves upwards, the first gear 20 is still under the action of the limiting device 21, the rotating shaft 10 is not moved, and the angle bead 11 is continuously in a retracted state.
When the key 13 is pressed again, the gear brush 15 moves downwards under the driving of the key 13, the first gear 20 rotates clockwise, the first gear 20 rotates to drive the rotating shaft 10 to rotate clockwise, and at the moment, the first spring 23 is compressed by the pressure of the key 13. The rotating shaft 10 rotates clockwise, and the angle bead control device 14 controls the angle bead 11 to extend out. When the key 13 is released again, as shown in fig. 5 and 6, the first spring 23 of the key 13 moves upwards, the gear brush 15 moves upwards under the driving of the key 13, and the key 13 and the gear brush 15 are reset. Because the limiting device 21 limits the first gear 20 to rotate anticlockwise, the gear brush 15 moves upwards, the first gear 20 is still under the action of the limiting device 21, the rotating shaft 10 is not moved, and the angle bead 11 is continuously in the extending state. If the key 13 is pressed for the third time, the actions are repeated and repeated.
As above, the rotating shaft 10 rotates clockwise each time the key 13 is pressed, and the angle bead 11 alternately controls the angle bead 11 to retract and extend according to the rotation times of the rotating shaft 10.
Preferably, as shown in fig. 3 to 13, the first gear 20 includes a gear tooth portion 28 with a first gear tooth 24 and a cylindrical limiting portion 29 in an axial direction, the first cover plate 18 is provided with a vertically arranged fixing plate 30 with a fifth axis hole 31 penetrating the first gear 20, the limiting device 21 includes a bayonet 32 with a fixing shaft 33 and one end movably fixed between the outer side of the base 16 and the fixing plate 30, a metal torsion spring 34 with a circular portion 35 and two connecting rods 36 connected with the circular portion 35, the cylindrical limiting portion 29 is disposed at the outer side of the base 16 through the first axis hole 27, the cylindrical limiting portion 29 is provided with four limiting convex ribs 37 at even intervals in the axial direction, the other end of the bayonet 32 is clamped at the lower right end of the cylindrical limiting portion 29, the outer side of the base 16 is provided with a second axis hole 38, the fixing plate 30 is provided with a third axis hole 39, both ends of the fixing shaft 33 are just fixed in the second, the ring part 35 is sleeved on the fixed shaft 33, the two connecting rods 36 are respectively provided with a fixed rod 40 to the outside, the outside of the base 16 is provided with a second fixed hole 41, the bayonet 32 is provided with a third fixed hole 42, and the two fixed rods 40 are respectively inserted and fixed in the second fixed hole 41 and the third fixed hole 42.
As shown in fig. 8 to 10, the first gear 20 includes a gear tooth portion 28 provided with the first gear tooth 24 and a cylindrical limiting portion 29, the gear tooth portion 28 and the cylindrical limiting portion 29 are coaxial, and when the first gear tooth 24 rotates clockwise under the action of the first rack 25 of the gear brush 15, the cylindrical limiting portion 29 also rotates clockwise. That is, the two ends of the fixed shaft 33 of the bayonet 32 are just fixed in the second shaft hole 38 and the third shaft hole 39, the bayonet 32 can rotate by the fixed shaft 33, and the circle part 35 of the torsion spring is sleeved on the fixed shaft 33, and the two fixed rods 40 are respectively inserted into the second fixed hole 41 fixed on the outer side of the base 16 and the third fixed hole 42 of the bayonet 32, so that the bayonet 32 is under the limiting action of the torsion spring, and the torsion spring is mostly a metal torsion spring 34 and has certain elasticity, so that the bayonet 32 can only slightly deviate from the position in a small range, but can not rotate, and the limiting effect is achieved.
The other end of bayonet lock 32 is blocked in the spacing portion 29 lower right side end of tube-shape, the even interval of the spacing portion 29 axial of tube-shape is provided with four spacing protruding ribs 37, therefore, when button 13 pushes down, the first rack 25 of gear brush 15 moves down, when the wheel tooth portion 28 of first gear 20 rotates clockwise, spacing portion 29 of tube-shape also follows clockwise rotation, again because of the other end of bayonet lock 32 blocks in spacing portion 29 lower right side end of tube-shape and bayonet lock 32 can only slightly deviate from the position in the small range, when spacing protruding rib 37 rotated to bayonet lock 32 upper surface, bayonet lock 32 slightly, spacing protruding rib 37 can pass through bayonet lock 32 smoothly, it is below to the bayonet lock 32 to change, wheel tooth portion 28 rotates, pivot 10 clockwise rotation. When the button 13 rebounds and the first rack 25 of the gear brush 15 moves upward, the gear tooth portion 28 of the first gear 20 attempts to rotate counterclockwise, and because the other end of the detent 32 is clamped at the lower right end of the cylindrical limiting portion 29, the limiting convex rib 37 of the cylindrical limiting portion 29 is clamped below the detent 32, the cylindrical limiting portion 29 cannot rotate counterclockwise, and the gear tooth portion 28 of the first gear 20 is further limited from rotating counterclockwise. Therefore, when the button 13 is rebounded, the first gear 20 is not rotated and the rotating shaft 10 is not rotated. If the key 13 is pressed again, the rotating shaft 10 continues to rotate clockwise, and the steps are repeated. The cylindrical limiting part 29 is provided with four limiting convex ribs 37 at even intervals in the axial direction, namely, the first gear 20 and the rotating shaft 10 can rotate by 90 degrees each time the key 13 is pressed.
Preferably, as shown in fig. 4, 7, 10 to 13, the lower end of the key 13 is provided with a first blind hole 43 sleeved on the first spring 23, and the length of the first spring 23 is greater than the depth of the first blind hole 43. The lower end of the key 13 is provided with a first blind hole 43, the first spring 23 is sleeved in the first blind hole 43, and the length of the first spring 23 is larger than the depth of the first blind hole 43, and the first spring 23 extends out of the first blind hole 43, so that the first spring 23 can be prevented from being separated out when the key 13 moves, and the first spring 23 can be compressed and rebounded.
Preferably, as shown in fig. 4, 7, 10 to 13, the key 13 is provided with a fourth fixing hole 44, an upper portion of one end of the gear brush 15 is provided with a fifth fixing hole 45, and the corner protection mechanism is further provided with a first fixing pin 46 inserted in the fourth fixing hole 44 and the fifth fixing hole 45 in sequence; the lower part of one end of the gear brush 15 is provided with a first groove 47, the position corresponding part of the first groove 47 of the key 13 is provided with a second groove 48, and the corner protection mechanism is also provided with a second spring 49, and two ends of the second spring are respectively clamped in the first groove 47 and the second groove 48.
The gear brush 15 is fixed on the key 13 through the first fixing pin 46, the structure is simple, the installation is convenient, the fixation is reliable, and the gear brush 15 can rotate by taking the first fixing pin 46 as an axis. The two ends of the second spring 49 are respectively clamped in the first groove 47 at the lower part of one end of the gear brush 15 and the second groove 48 of the key 13, the second spring 49 plays a role in supporting and fixing the gear brush 15, the gear brush 15 can rotate by taking the first fixing pin 46 as an axis in the compression and stretching range of the second spring 49, namely when the key 13 moves upwards and returns, the gear brush 15 is driven to move upwards, the first rack 25 of the gear brush 15 is meshed with the first gear 24, however, the first gear 24 cannot rotate anticlockwise due to the limiting effect of the bayonet 32, at this moment, the structure can enable the gear brush 15 to rotate slightly anticlockwise, the second spring 49 is compressed, only the gear brush 15 moves upwards, the first gear 20 does not rotate, and the first gear 24 and the first rack 25 cannot be damaged. The fixing manner between the key 13 and the gear brush 15 is ingenious and practical.
Preferably, as shown in fig. 1 and 2, the number of the corner protectors 11 and the corner protector control devices 14 is two, and the corner protector control devices 14 are disposed at both ends of the rotating shaft 10.
As shown in fig. 1 to 19, the rotating shaft 10 penetrates through a first fixing hole 19 fixed on the ratchet device 12, the corner protector control devices 14 are arranged at two ends of the rotating shaft 10, that is, the corner protector 11 and the corner protector control device 14 can be respectively arranged at two corners of the LED display screen, one ratchet device 12 controls the two corner protectors 11 to stretch, the control operation is simple and convenient, one corner protector 11 is controlled relative to one ratchet device 12, the structure is simplified, the material cost is reduced, and the space of the equipment is saved.
Preferably, as shown in fig. 14 to 19, the corner protector control device 14 includes a third spring 50, a corner protector base 51 having a second open cavity 52 and a third open cavity 53 which are communicated with each other, a second cover plate 54 covering the second open cavity 52 and the third open cavity 53, a slide pin 55, a second gear 58 having a sixth fixing hole 56 through which the fixed shaft 10 is inserted and having second gear teeth 57 with 90 ° radians at both ends thereof, the slide pin 55 includes a slide pin body 59 movably disposed in the second open cavity 52, a second gear 60 engaged with the second gear teeth 57, and a connecting plate 61 connected to the corner protector 11, one end of the slide pin body 59 inserted into the second open cavity 52 is provided with a second blind hole 62, the second open cavity 52 of the corner protector base 51 is provided with a first strip groove 63, the corner protector 11 is disposed outside the corner protector base 51, the connecting plate 61 is inserted into the first strip groove 63, the length of the third spring 50 is greater than the depth of the second open cavity 62, the third spring 50 is disposed in the second blind hole 62, a fourth shaft hole 64 for movably fixing the sixth fixing hole 56 is disposed at a joint of the corner guard 51 and the second cover plate 54, a second strip-shaped groove 65 is disposed between the second open cavity 52 and the third open cavity 53, the second rack 60 is disposed in the third open cavity 53, and a joint of the sliding pin body 59 and the second rack 60 penetrates the second strip-shaped groove 65.
The rotating shaft 10 is fixed in the sixth fixing hole 56 of the second gear 58, as shown in fig. 15 and 16, when the rotating shaft 10 rotates clockwise, the second gear 58 is driven to rotate clockwise, and the second rack 60 moves away from the second cover plate 54 due to the engagement of the second gear teeth 57 at one end of the second gear 58 and the second rack 60; because the second rack 60 is connected with the sliding pin body 59, the sliding pin body 59 is driven by the second rack 60 to move towards the direction away from the second cover plate 54; because the third spring 50 is disposed between the second open cavity 52 and the second blind hole 62, the third spring 50 is compressed at this time; since the corner protector 11 is connected to the slide pin body 59 through the connecting plate 61, the corner protector 11 is moved away from the second cover plate 54 by the slide pin body 59, and at this time, the corner protector 11 is retracted.
As shown in fig. 18 and 19, when the key 13 is pressed for the second time and the rotating shaft 10 continues to rotate clockwise, the second gear 58 is driven to continue to rotate clockwise, the second teeth 57 of the second gear 58 are disposed at two ends of the second gear 58 and have 90 ° radians respectively, so that after the key 13 is pressed for the first time and the rotating shaft 10 rotates clockwise for 90 °, the meshing stroke between the second teeth 57 with the second rack 60 of the 90 ° radians at one end of the second gear 58 is ended, at this time, the second rack 60 is not meshed with the second teeth 57, and without the limiting effect of the second teeth 57, the third spring 50 rebounds, the slide pin body 59 is driven by the third spring 50 to move toward the second cover plate 54, and because the angle guard 11 is connected to the slide pin body 59 through the connecting plate 61, the angle guard 11 is driven by the slide pin body 59 to move toward the second cover plate 54, and at this time, the angle guard 11 extends out.
As shown in fig. 16 and 17, when the key 13 is pressed for the third time and the rotating shaft 10 continues to rotate clockwise, the second rack 60 is engaged with the second gear 57 at the other end of the second gear 58, and the second rack 60 and the sliding pin body 59 are driven to move away from the second cover plate 54 in the above step, so that the corner protector 11 retracts. Therefore, according to the steps, the angle bead control device 14 can control the angle bead 11 to extend and retract at intervals according to the rotation times of the rotating shaft 10, the structure is simple and reliable, and the operation is very convenient.
Preferably, as shown in fig. 14 to 19, the corner protector 11 is provided with a first connecting hole 66, the connecting plate 61 is provided with a second connecting hole 67, and the corner protector mechanism is further provided with a second fixing pin 68 sequentially penetrating through the first connecting hole 66 and the second connecting hole 67; the angle bead seat 51 is provided with a threaded hole, the second cover plate 54 is provided with a seventh fixing hole corresponding to the threaded hole, and the angle bead mechanism is further provided with a screw penetrating through the seventh fixing hole and then screwed into the threaded hole.
The angle bead 11 is fixed on the connecting plate 61 through the second fixing pin 68, and the connecting structure is simple and convenient to install and operate. The second cover plate 54 is fixed on the corner protection seat 51 through screws, and has a simple connection structure, a firm structure and convenient installation and operation.
Preferably, as shown in fig. 14 to 19, the second open cavity 52 is cylindrical, and the slide pin body 59 is cylindrical to fit the second open cavity 52; the corner protector 11 is a metal corner protector 11. The second open cavity 52 is cylindrical, the sliding pin body 59 is cylindrical, the second open cavity 52 and the sliding pin body 59 are smooth to contact, and when the sliding pin body 59 moves back and forth in the second open cavity 52, the sliding pin body 59 is smooth and cannot be clamped. The angle bead 11 is set as a metal angle bead 11, which has high strength and hardness and can protect the LED display screen well after being installed.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. A corner guard mechanism, comprising: the corner protector comprises a rotating shaft, a corner protector, a ratchet wheel device for controlling the rotating shaft to rotate towards one direction, a key for driving the ratchet wheel device to control the rotating shaft to rotate for a certain angle after being pressed every time, and a corner protector control device connected with the rotating shaft and used for controlling the corner protector to extend and retract according to the rotating frequency interval of the rotating shaft.
2. A corner guard mechanism according to claim 1, wherein: after the key is pressed every time, the ratchet wheel device is driven to control the rotating angle of the rotating shaft to be 90 degrees, and the ratchet wheel device controls the rotating shaft to rotate clockwise.
3. A corner guard mechanism according to claim 2, wherein: the ratchet wheel device comprises a gear brush with one end connected with the key, a base with a first opening cavity, a first cover plate fixedly covered on the first opening cavity, a first gear which is provided with a first fixing hole for fixing the rotating shaft in a penetrating way and drives the rotating shaft to rotate, a limiting device which is fixed on the base and limits the first gear to rotate anticlockwise, a cylinder arranged on the first cover plate, and a first spring sleeved on the cylinder, the first gear is provided with first gear teeth, the other end of the gear brush is provided with a first rack meshed with the first gear teeth, the top of the base is provided with a through hole penetrating the key, the base is provided with a first shaft hole for movably fixing the first gear, one end of the key is arranged on the first spring, the other end of the key extends out of the through hole, and the first gear, the gear brush and the key are arranged in the first opening cavity.
4. A corner guard mechanism according to claim 3, wherein: the first gear axial direction comprises a gear tooth part and a cylindrical limiting part, the gear tooth part is provided with the first gear teeth, the first cover plate is provided with a vertically arranged fixing plate with a fifth shaft hole, the fifth shaft hole penetrates through the first gear, the limiting device comprises a bayonet lock with a fixing shaft and a metal torsion spring with a circular ring part and two connecting rods connected with the circular ring part, one end of the bayonet lock is movably fixed between the outer side of the base and the fixing plate, the cylindrical limiting part penetrates through the first shaft hole and is arranged at the outer side of the base, four limiting convex ribs are axially and uniformly arranged at intervals at the cylindrical limiting part, the other end of the bayonet lock is clamped at the right lower end of the cylindrical limiting part, the outer side of the base is provided with a second shaft hole, the fixing plate is provided with a third shaft hole, two ends of the fixing shaft are just fixed in the second shaft hole and, the two connecting rods are respectively provided with a fixing rod towards the outer side, the outer side of the base is provided with a second fixing hole, the bayonet lock is provided with a third fixing hole, and the two fixing rods are respectively inserted and fixed in the second fixing hole and the third fixing hole.
5. A corner protection mechanism according to claim 4, wherein: the lower end of the key is provided with a first blind hole which is sleeved on the first spring, and the length of the first spring is larger than the depth of the first blind hole.
6. A corner protection mechanism according to claim 5, wherein: the key is provided with a fourth fixing hole, the upper part of one end of the gear brush is provided with a fifth fixing hole, and the corner protection mechanism is also provided with a first fixing pin which is sequentially inserted in the fourth fixing hole and the fifth fixing hole; the lower part of one end of the gear brush is provided with a first groove, the position corresponding position of the first groove of the key is provided with a second groove, and the corner protection mechanism is further provided with a second spring, wherein the two ends of the second spring are clamped into the first groove and the second groove respectively.
7. A corner guard mechanism according to claim 1, wherein: the angle bead with angle bead controlling means's figure is two, angle bead controlling means set up in the both ends of pivot.
8. A corner guard mechanism according to claim 1, wherein: the corner protector control device comprises a third spring, a corner protector seat with a second opening cavity and a third opening cavity which are communicated, a second cover plate covering the second opening cavity and the third opening cavity, a sliding pin, and a second gear, wherein a sixth fixing hole for fixing the rotating shaft in a penetrating way is arranged in the middle of the second cover plate, the sliding pin covers the second opening cavity and the third opening cavity, second gear teeth with 90-degree radian are respectively arranged at two ends of the second cover plate, the sliding pin comprises a sliding pin body movably arranged in the second opening cavity, a second rack meshed with the second gear teeth and a connecting plate connected with the corner protector, a second blind hole is arranged at one end, inserted into the second opening cavity, of the sliding pin body, a first bar-shaped groove is arranged at the second opening cavity of the corner protector seat, the corner protector is arranged outside the corner protector seat, the connecting plate is arranged in the first bar-shaped groove in a penetrating way, and the length of the third spring is greater than the depth of, the third spring set up in the second blind hole, the angle bead seat with second apron junction is provided with the activity and fixes the fourth shaft hole of sixth fixed orifices, second open cavity with be provided with second bar groove between the third open cavity, the second rack set up in the third open cavity, the sliding pin body with second rack junction wears to locate second bar groove.
9. A corner guard mechanism according to claim 8, wherein: the corner protector is provided with a first connecting hole, the connecting plate is provided with a second connecting hole, and the corner protector mechanism is further provided with a second fixing pin which sequentially penetrates through the first connecting hole and the second connecting hole; the angle bead seat is provided with a threaded hole, the second cover plate is provided with a seventh fixing hole corresponding to the threaded hole, and the angle bead mechanism is further provided with a screw penetrating through the seventh fixing hole and then screwed into the threaded hole.
10. A corner guard mechanism according to claim 9, wherein: the second open cavity is cylindrical, and the sliding pin body is cylindrical and matched with the second open cavity; the angle bead is a metal angle bead.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110267975.0A CN112918910B (en) | 2021-03-12 | 2021-03-12 | Corner protection mechanism |
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| CN202110267975.0A CN112918910B (en) | 2021-03-12 | 2021-03-12 | Corner protection mechanism |
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| CN112918910B CN112918910B (en) | 2024-04-12 |
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|---|---|
| CN112918910B (en) | 2024-04-12 |
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