A kind of Novel movable blackboard
Technical field:
The present invention relates to teaching aid technical field, a kind of Novel movable blackboard.
Background technology:
The two ends fixed supporting leg of existing moving type blackboard device, usually blackboard, its all parts is bolted,
In use, angle and the height of blackboard is fixing, it is impossible to carry out up-down adjustment and rotation so that they cannot be according to different
The requirement of user is adjusted, thus affects the effect that user is used for.
Summary of the invention:
The purpose of the present invention is aiming at the deficiency of prior art, and provides a kind of Novel movable blackboard, its blackboard master
Body can carry out upper-lower height regulation and angle rotates, and meets the use requirement of different user, and using effect is good.
The technology solution of the present invention is as follows:
A kind of Novel movable blackboard, including blackboard main body, the left and right sides, middle part of described blackboard main body is fixed with two and turns
Moving axis, two movable blocks are hinged in two rotary shafts, and the middle part of movable block has vertical groove, and supporting leg sleeve erects corresponding
In direct through groove, two supporting legs are in the both sides of blackboard main body, and the bottom of two supporting legs is fixed on base plate, and the bottom surface of base plate is fixed
Having multiple contiguous block, the bottom surface of contiguous block has groove, and the bottom surface of contiguous block is fixed with limiting plate, and lubrication block sleeve is at groove
In, the outer wall of lubrication block is fixed on the medial wall of groove, and the bottom surface of lubrication block has hemispherical groove, and rolling ball body sleeve exists
In hemispherical groove, the conical through-hole that the middle part of limiting plate has is stretched out in the bottom of rolling ball body, the maximum gauge of conical through-hole
Diameter less than rolling ball body;
It is fixed with vertical tooth bar on the front face of two supporting legs, the medial wall of vertical groove is hinged with travelling gear, pass
Moving gear is meshed with vertical tooth bar, and the lateral wall of movable block is bolted with adjusting screw rod, and the outer end of adjusting screw rod forms hands
Holding portion, the inner of adjusting screw rod is in vertical groove and is fixed with pressing plate, and pressing plate is pressed against on the sidewall of vertical tooth bar;
It is fixed with location gear in described rotary shaft, the sidewall of movable block is fixed with spacing preiection post, spacing preiection post
Holding is in the corresponding teeth groove of location gear;
Being bolted with multiple positioning screw on described base plate, the lower end of positioning screw extends downwardly from base plate and is hinged with bottom pressure
Block, the lower end of positioning screw is inserted with spring, and bottom briquetting is put forth effort in one end of spring, and the end of base plate is put forth effort in the upper end of spring
On face, the upper end of positioning screw protrudes upward base plate and is fixed with rotation section.
The bottom of the sidewall of described movable block is fixed with limited block, and the top of limited block is fixed with spacing preiection post, spacing
The top holding of protruding post is in the corresponding teeth groove of location gear.
Being fixed with wearing layer on the rear surface of described supporting leg, wearing layer is pressed against on the posterior medial wall of vertical groove.
Also being fixed with wearing layer on the left and right sides wall of described supporting leg, wearing layer is pressed against the left and right sides of vertical groove
On medial wall.
Being fixed with brake pad on described pressing plate, brake pad is pressed against on the sidewall of vertical tooth bar.
The rear portion end face of described base plate is fixed with vertical gripper shoe, and the end face of vertical gripper shoe has the lifting downwardly extended
Groove, riser sleeve, in upgrading slot, has vertical regulating tank in the middle part of the rear surface of vertical gripper shoe, the back side of riser is fixed
Having pushing block, pushing block to stretch out vertical regulating tank, the rear surface of vertical gripper shoe is fixedly arranged in the middle of adjustable plate, regulates lift-bolt
Being screwed onto on adjustable plate, the upper end of regulation lift-bolt protrudes upward adjustable plate and is hinged on pushing block, regulates lift-bolt
Top be inserted with Promoting Layered Buffer spring, pushing block is put forth effort in the upper end of Promoting Layered Buffer spring, and the lower end of Promoting Layered Buffer spring
Power is in adjustable plate;
The top of described riser is bolted with clamping screw, and the front end of clamping screw is stretched out the front face of riser and fixes
Having a bracer, a bracer is pressed against on the rear surface of blackboard body.
The beneficial effects of the present invention is:
Its blackboard main body can carry out upper-lower height regulation and angle rotates, and the use meeting different user is wanted
Asking, using effect is good.
Accompanying drawing illustrates:
Fig. 1 is the structural representation of the present invention;
Fig. 2 is the partial structurtes schematic diagram between movable block and the supporting leg of the present invention;
Fig. 3 is the partial structurtes schematic diagram between movable block and spacing preiection post;
Fig. 4 is the partial sectional view of the present invention;
Fig. 5 is the partial enlarged drawing of Fig. 1.
Detailed description of the invention:
Embodiment: as shown in Fig. 1 to Fig. 5, a kind of Novel movable blackboard, including blackboard main body 10, described blackboard main body 10
The left and right sides, middle part be fixed with two rotary shafts 11, two movable blocks 12 are hinged in two rotary shafts 11, movable block 12
Middle part has vertical groove 13, and supporting leg 20 sleeve is in corresponding vertical groove 13, and two supporting legs 20 are in blackboard main body 10
Both sides, the bottom of two supporting legs 20 is fixed on base plate 30, and the bottom surface of base plate 30 is fixed with multiple contiguous block 31, contiguous block 31
Bottom surface has groove 32, and the bottom surface of contiguous block 31 is fixed with limiting plate 33, and lubrication block 34 sleeve, in groove 32, lubricates block 34
Outer wall is fixed on the medial wall of groove 32, and the bottom surface of lubrication block 34 has hemispherical groove 341, and rolling ball body 35 sleeve is half
In ball recess 342, the conical through-hole 332 that the middle part of limiting plate 33 has, conical through-hole 332 are stretched out in the bottom of rolling ball body 35
Maximum gauge less than the diameter of rolling ball body 35;
It is fixed with vertical tooth bar 21 on the front face of two supporting legs 20, the medial wall of vertical groove 13 is hinged with driving cog
Wheel 14, travelling gear 14 is meshed with vertical tooth bar 21, and the lateral wall of movable block 12 is bolted with adjusting screw rod 15, adjusting screw rod
The outer end of 15 forms Handheld Division 151, and the inner of adjusting screw rod 15 is in vertical groove 13 and is fixed with pressing plate 152, pressing plate
On 152 sidewalls being pressed against vertical tooth bar 21;
It is fixed with location gear 16 in described rotary shaft 11, the sidewall of movable block 12 is fixed with spacing preiection post 17, limit
Protruding post 17 holding in position is in the corresponding teeth groove 161 of location gear 16;
Being bolted with multiple positioning screw 36 on described base plate 30, the lower end of positioning screw 36 extends downwardly from base plate 30 hinged
Having bottom briquetting 37, the lower end of positioning screw 36 is inserted with spring 38, and bottom briquetting 37, spring 38 are put forth effort in one end of spring 38
Upper end put forth effort on the bottom surface of base plate 30, the upper end of positioning screw 36 protrudes upward base plate 30 and is fixed with rotation section 361.
Further, the bottom of the sidewall of described movable block 12 is fixed with limited block 18, and the top of limited block 18 is fixed
Limited location projection post 17, the top holding of spacing preiection post 17 is in the corresponding teeth groove 161 of location gear 16.
Further, the rear surface of described supporting leg 20 being fixed with wearing layer 22, wearing layer 22 is pressed against vertical groove
On the posterior medial wall of 13.
Further, the left and right sides wall of described supporting leg 20 being also fixed with wearing layer 22, wearing layer 22 is pressed against perpendicular
On the medial wall of the left and right sides of direct through groove 13.
Further, described pressing plate 152 being fixed with brake pad 153, brake pad 153 is pressed against the side of vertical tooth bar 21
On wall.
Further, the rear portion end face of described base plate 30 is fixed with vertical gripper shoe 40, the end face of vertical gripper shoe 40
Having the upgrading slot 41 downwardly extended, riser 42 sleeve, in upgrading slot 41, has in the middle part of the rear surface of vertical gripper shoe 40
Vertically regulating tank 43, the back side of riser 42 is fixed with pushing block 421, and pushing block 421 stretches out vertical regulating tank 43, vertically supports
The rear surface of plate 40 is fixedly arranged in the middle of adjustable plate 45, and regulation lift-bolt 46 is screwed onto on adjustable plate 45, regulates lift-bolt 46
Upper end protrude upward adjustable plate 45 and be hinged on pushing block 421, regulation lift-bolt 46 top be inserted with Promoting Layered Buffer
Spring 47, the upper end of Promoting Layered Buffer spring 47 puts forth effort on pushing block 421, and adjustable plate is put forth effort in the lower end of Promoting Layered Buffer spring 47
45;
The top of described riser 42 is bolted with clamping screw 48, and the antetheca of riser 42 is stretched out in the front end of clamping screw 48
Face is also fixed with a bracer 49, and a bracer 49 is pressed against on the rear surface of blackboard body 10.
Operation principle: by adjusting screw rod 15 is rotated so that pressing plate 152 is no longer press against on vertical tooth bar 21, then,
Move up and down blackboard main body 10, after position adjustments completes, by rotating adjusting screw rod 15 so that be fixed with on pressing plate 152 rubs
Cleaning block 153 is pressed against on the sidewall of vertical tooth bar 21, it is achieved grip.
And spacing preiection post 17 is rubber cylinder, by firmly Rotary Blackboard body 10 so that spacing preiection post 17 is nested
In different teeth groove 161, complete position and fix so that blackboard body 10 anglec of rotation meets the needs of user.
And post 24 can protect blackboard body 10 will not damage when moving down.
And during its promotion the present embodiment, positioning screw 36 is rotated so that bottom briquetting 37 is not pressed against on bottom surface, its rolling
Dynamic spheroid 35 rolls in bottom surface, thus reduces friction, after position determines, is rotated further by positioning screw 36 so that bottom briquetting 37 is pressed
Lean on the ground, thus realize fixing, very convenient.
And after blackboard body 10 angular adjustment is complete, rotate regulation lift-bolt 46 so that riser 42 up-down adjustment, and
Rotate clamping screw 48 so that a bracer 49 is pressed against on the rear surface of blackboard body 10, it is achieved back support, keep blackboard originally
The normal position of body 10, very convenient.