CN209746840U

CN209746840U - Teaching pole convenient to instruct

Info

Publication number: CN209746840U
Application number: CN201920163156.XU
Authority: CN
Inventors: 刘晓庆
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-01-30
Filing date: 2019-01-30
Publication date: 2019-12-06
Anticipated expiration: 2029-01-30

Abstract

The utility model belongs to the technical field of the teaching aid technique and specifically relates to a teaching pointer convenient to instruct, including lower hollow rod, last hollow rod and instruction horizontal pole, go up hollow rod and peg graft upper portion in lower hollow rod, both sides rigid coupling has the location rack around the press bar left end, and the right-hand member rigid coupling has the power rack, and the joint has the U-shaped fixture block in the fixture block spout, and the gear meshes mutually in power rack and the pivot, it has the bull stick to peg graft in the hollow rod, and bull stick lower extreme annular fixture block joint is in last hollow rod inner wall bottom annular groove, and bull stick top rigid coupling has first bevel gear, and the connecting axle left end rigid coupling has second bevel gear, and the horizontal pole is instructed to the right-hand member rigid coupling. The utility model has the advantages of reasonable design, instruct the horizontal pole can rotate and with last hollow rod between form certain contained angle in order to guarantee no matter where oneself stands to instruct the horizontal pole can keep the level all the time, can mark the whole sentence on the blackboard, it is very convenient, and the change of installing length can not influence the teacher to instructing controlling of horizontal pole.

Description

Teaching pole convenient to instruct

Technical Field

The utility model belongs to the technical field of teaching aid technique and specifically relates to a teaching and teaching pole convenient to instruct.

Background

Because blackboard height is higher in the classroom at present, a lot of teachers can use the religion pole to instruct when having a lesson, and traditional religion pole is a telescopic link that can fix, perhaps is equipped with the laser lamp so that instruct, but it can only stay on a certain point, can't mark the whole sentence, and it is not very clear that apart from the student far away moreover probably sees. In order to solve the problem, in the chinese utility model patent with publication number CN207938224U, a multifunctional teaching stick is disclosed, the top end of which is provided with a horizontal indicating plate, the horizontal indicating plate can be unfolded by pushing a sliding block so as to mark a sentence on a book, and a student far away can find the mark position in time. However in this utility model, horizontal indicator board and telescopic link remain the perpendicular throughout, but the teacher need stand in blackboard-writing one side in order not to cause to shelter from when explaining blackboard-writing, and at this moment the telescopic link will no longer keep vertical, and horizontal indicator board will also no longer keep the level, and when the device extended in addition, the position of slider will uprise, and the teacher wants to promote the slider then must raise the arm this moment, and is inconvenient.

Disclosure of Invention

The utility model aims at overcoming above-mentioned technical shortcoming and providing a teaching pole convenient to instruct, instruct the horizontal pole can rotate and with last hollow rod between form certain contained angle in order to guarantee no matter where oneself stands to instruct the horizontal pole can keep the level all the time, not only can mark the whole sentence on the blackboard, simultaneously more striking, it is very convenient, and the change of installing length can not influence the teacher to instructing controlling of horizontal pole.

The utility model provides a technical scheme that technical problem adopted does: a teaching rod convenient for indication comprises a lower hollow rod, an upper hollow rod and an indication cross rod, wherein the upper hollow rod is inserted at the upper part in the lower hollow rod, a fastening knob is screwed at the upper left part of the lower hollow rod, a pressing rod is inserted at the rear side of the lower left part of the lower hollow rod, first positioning racks are fixedly connected with the front side and the rear side of the left part of the pressing rod, a power rack is fixedly connected with the right end of the pressing rod, clamping block chutes are fixedly connected with the left end surface and the right end surface of the lower hollow rod above the pressing rod, U-shaped clamping blocks are clamped in the two clamping block chutes, second positioning racks matched with the first positioning racks are fixedly connected with the inner side surfaces of the lower parts of the two U-shaped clamping blocks, the U-shaped clamping blocks slide upwards to separate the first positioning racks from the second positioning racks, the pressing rod can be pressed downwards, the U-shaped clamping blocks are downwards pulled to be meshed with the first positioning racks, the pressing rod can not move, and the power rack is, the right end face of the lower hollow rod is fixedly connected with a sleeve on the right side of the power rack, the right end of the power rack penetrates through the lower hollow rod and is fixedly connected with a limiting block in the sleeve, a supporting spring is fixedly connected with the right end face of the limiting block, the center of the inner bottom face of the lower hollow rod is connected with a rotating shaft through a bearing, a gear meshed with the power rack is fixedly connected onto the rotating shaft, the lower end of the lower hollow rod is held and a pressing rod is pressed by a thumb, so that the power rack moves rightwards, the gear and the rotating shaft are driven to rotate, when the power rack is pushed to the rightmost end in the sleeve by the pressing rod, the rotation angle of the gear is 180 degrees, sliding blocks are fixedly connected to the left side and the right side of the upper end of the rotating shaft, a rotating rod is inserted into the upper hollow rod, an annular clamping groove is formed in the lower end, the left side and the right side of the inner part are vertically provided with strip-shaped sliding chutes, the upper part of the rotating shaft is inserted in the rotating rod by a sliding block, when the upper hollow rod moves up and down, because the annular clamping block at the lower end of the rotating rod is clamped in the annular clamping groove at the lower end of the upper hollow rod, the rotating rod can rotate freely but can move up and down along with the upper hollow rod, because the slide block at the upper end of the rotating shaft is clamped in the strip-shaped chute inside the rotating rod, the rotating shaft can not limit the rotating rod to move up and down but drive the rotating rod to rotate when the rotating shaft rotates, the top end of the rotating shaft is fixedly connected with a first bevel gear, the right side of the upper part of the upper hollow rod is inserted with a connecting shaft, the connecting part of the connecting shaft on the right side wall of the upper hollow rod is fixedly connected with an I-shaped limiting ring, so as to prevent the connecting shaft from shaking left and right, a second bevel gear is fixedly connected in the upper hollow rod at the left end of the connecting shaft, the first bevel gear is meshed with the second bevel gear, and the gear transmission ratio of the gear, the first bevel gear and the second bevel gear is 1: 1, the indicating cross rod is fixedly connected to the right end face of the connecting shaft, when the rotating shaft drives the rotating rod to rotate, the connecting shaft is driven to rotate through the first bevel gear and the second bevel gear, so that the indicating cross rod rotates, the rotatable angle range of the gears is 180 degrees, the rotatable angle of the indicating cross rod is also 180 degrees, the rotating angle of the indicating cross rod is gradually increased along with the gradual rightward movement of the pressing rod, a teacher can press the pressing rod according to needs to form a certain included angle between the indicating cross rod and the upper hollow rod, so that the indicating cross rod can be always kept horizontal no matter where the teacher stands, meanwhile, the current position of the pressing rod is fixed by downwards stirring the U-shaped fixture block to lock the current angle of the indicating cross rod, the indicating cross rod can be used for marking the whole sentence on the blackboard, and is more striking, so that a student who sits far away can quickly find, upwards promote the U-shaped fixture block, the power rack resets under supporting spring's effect, and pivot and bull stick rotate and make to instruct the horizontal pole to hang down once more, because the hollow rod peg graft in hollow rod upper portion down, directly pull out push up hollow rod can adjusting device's whole length and accessible fastening knob of screwing fix to satisfy teacher's teaching needs, the bull stick can reciprocate along with the hollow rod and can not influence its rotation this moment.

Furthermore, a rubber layer is fixedly sleeved at the outer lower end of the lower hollow rod, so that a teacher can hold the hollow rod conveniently.

Further, instruct the horizontal pole upper end to be equipped with the battery case, the lower extreme rigid coupling has the switch, and the right-hand member rigid coupling has a plurality of LED lamp, three electric connection, has put button cell in the battery case, starts the LED lamp for the teacher is more striking when using to instruct the horizontal pole.

The utility model discloses the beneficial effect who has is: the utility model has reasonable structural design, the indicating cross bar can rotate and form a certain included angle with the upper hollow bar by pushing the U-shaped fixture block upwards and pressing the pressing bar so as to ensure that the indicating cross bar can be kept level no matter where the indicating cross bar stands, meanwhile, the current angle of the indicating cross bar can be locked by fixing the current position of the pressing rod by downwards shifting the U-shaped clamping block, the indicating cross bar can be used for marking the whole sentence on the blackboard, meanwhile, the utility model is more striking, so that students who sit far can quickly find the marked position, push the U-shaped clamping block upwards and reset the power rack under the action of the supporting spring, the indicating cross bar can be hung again, which is very convenient, the whole length of the device can be adjusted by directly pulling and pushing the hollow bar, and the device can be fixed by screwing the fastening knob, so as to satisfy teacher's teaching needs, and the change of device length can not influence the teacher to instructing the control of horizontal pole.

Drawings

Fig. 1 is a schematic diagram of the internal structure of the present invention.

Fig. 2 is a left side view of the external structure of the present invention.

Fig. 3 is a schematic cross-sectional view of the present invention.

Figure 4 is the utility model discloses a fixture block spout and U-shaped fixture block's schematic structure.

Detailed Description

The present invention will be described in detail below with reference to fig. 1 to 4.

As shown in fig. 1-4, the utility model comprises a lower hollow rod 1, an upper hollow rod 2 and an indicating cross bar 16, wherein the upper hollow rod 2 is inserted into the upper part of the lower hollow rod 1, the left upper part of the lower hollow rod 1 is screwed with a fastening knob 3, the rear side of the left lower part of the lower hollow rod 1 is inserted with a pressing rod 4, the front and rear sides of the left part of the pressing rod 4 are fixedly connected with a first positioning rack 4-1, the right end is fixedly connected with a power rack 5, the left end surface of the lower hollow rod 1 is fixedly connected with a fixture block chute 18 at the left and right sides above the pressing rod 4, a U-shaped fixture block 22 is clamped in the two fixture block chutes 18, the inner side surfaces of the lower parts of the two U-shaped fixture blocks 22 are fixedly connected with a second positioning rack 22-1 matched with the first positioning rack 4-1, the U-shaped fixture block 22 is slid upwards to separate the first positioning rack 4-1 from the second positioning rack 22, downwards pulling the U-shaped fixture block 22 to enable the first positioning rack 4-1 to be meshed with the second positioning rack 22-1, wherein the pressing rod 4 cannot move, the power rack 5 is transversely inserted into the lower portion of the lower hollow rod 1, the right end face of the lower hollow rod 1 is fixedly connected with a sleeve 6 on the right side of the power rack 5, the right end of the power rack 5 penetrates through the lower hollow rod 1 and is fixedly connected with a limiting block 7 in the sleeve 6, a supporting spring 8 is fixedly connected to the right end face of the limiting block 7, the center of the inner bottom face of the lower hollow rod 1 is connected with a rotating shaft 10 through a bearing 9, a gear 11 meshed with the power rack 5 is fixedly connected to the rotating shaft 10, the pressing rod 4 is held by a thumb at the lower end of the lower hollow rod 1, the power rack 5 moves rightwards to drive the gear 11 and the rotating shaft 10 to rotate, and when the power rack is pushed to the rightmost end in the sleeve by, the left side and the right side of the upper end of a rotating shaft 10 are fixedly connected with sliders 10-1, a rotating rod 12 is inserted in the upper hollow rod 2, the lower end of the inner wall of the upper hollow rod 2 is provided with an annular clamping groove 2-1, the lower end of the side wall of the rotating rod 12 is fixedly connected with an annular clamping block 12-1, the annular clamping block 12-1 is clamped in the annular clamping groove 2-1, the rotating rod 12 is hollow, the left side and the right side of the inner part of the rotating rod are vertically provided with strip-shaped sliding grooves 12-2, the upper part of the rotating shaft 10 is inserted in the rotating rod 12 through the sliders 10-1, when the upper hollow rod 2 moves up and down, the annular clamping block 12-1 at the lower end of the rotating rod 12 is clamped in the annular clamping groove 2-1 at the lower end of the upper hollow rod 2, the rotating rod 12 can freely rotate but can move up and down along with the, therefore, the rotating shaft 10 does not limit the rotating rod 12 to move up and down, but when the rotating shaft 10 rotates, the rotating rod 12 is driven to rotate, the top end of the rotating shaft 10 is fixedly connected with a first bevel gear 13, the right side of the upper part of the upper hollow rod 2 is inserted with a connecting shaft 14, the connecting shaft 14 is fixedly connected with an I-shaped limiting ring 14-1 at the joint of the right side wall of the upper hollow rod 2 to prevent the connecting shaft 14 from shaking left and right, the left end of the connecting shaft 14 is fixedly connected with a second bevel gear 15 in the upper hollow rod 2, the first bevel gear 13 is meshed with the second bevel gear 15, and the gear transmission ratio of the gear 11, the first bevel gear 13 and the second bevel gear: 1, the indication cross bar 16 is fixedly connected to the right end face of a connecting shaft 14, when a rotating shaft 10 drives a rotating rod 12 to rotate, the connecting shaft 14 is driven to rotate through a first bevel gear 13 and a second bevel gear 15, so that the indication cross bar 16 rotates, and because the range of the rotatable angle of a gear 11 is 180 degrees, the rotatable angle of the indication cross bar 16 is also 180 degrees, as the pressing rod 4 gradually moves rightwards, the rotating angle of the indication cross bar 16 is gradually increased, a teacher can press the pressing rod 4 as required, so that a certain included angle is formed between the indication cross bar 16 and an upper hollow rod 2, so as to ensure that the indication cross bar 16 can be always kept horizontal no matter where the teacher stands, and simultaneously, the current position of the pressing rod 4 is fixed by downwards shifting a U-shaped fixture block 22 to lock the current angle of the indication cross bar 16, the indication cross bar 16 can be used for marking whole sentence, so that sit far away student and find mark position fast, upwards promote U-shaped fixture block 22, power rack 5 resets under supporting spring 8's effect, pivot 10 and bull stick 12 rotate and make and instruct horizontal pole 16 to hang down once more, because upper hollow rod 2 pegs graft in lower hollow rod 1 upper portion, directly pull out upper hollow rod 2 can adjusting device's whole length and accessible fastening knob 3 of screwing fix, so as to satisfy teacher's teaching needs, bull stick 12 can reciprocate and can not influence its rotation along with upper hollow rod 2 this moment.

In this embodiment, the rubber layer 17 is fixedly sleeved on the outer lower end of the lower hollow rod 1, so as to be convenient for a teacher to hold.

In this embodiment, it is equipped with battery case 19 to instruct 16 upper ends of horizontal pole, and the lower extreme rigid coupling has switch 20, and the right-hand member rigid coupling has a plurality of LED lamp 21, and three electric connection has put button cell in the battery case, starts LED lamp 21 for the teacher is more striking when using to instruct horizontal pole 16 to instruct.

When the utility model is used, the U-shaped fixture block 22 is pushed upwards to separate the first positioning rack 4-1 from the second positioning rack 22-1, at this time, the lower end of the lower hollow rod 1 is held and the pressing rod 4 is pressed by the thumb, so that the indication cross rod 16 rotates, the rotating angle of the indication cross rod 16 is gradually increased along with the gradual movement of the pressing rod 4 rightward, a teacher can press the pressing rod 4 according to the requirement to form a certain included angle between the indication cross rod 16 and the upper hollow rod 2, so as to ensure that the indication cross rod 16 can be always kept horizontal no matter where the teacher stands, meanwhile, the current position of the pressing rod 4 is fixed by downwards shifting the U-shaped fixture block 22 to lock the current angle of the indication cross rod 16, the whole sentence on the blackboard can be marked by using the indication cross rod 16, and the marking is more striking, so that students who are far away can quickly find the marked position, the U-shaped fixture block 22 is pushed upwards to enable the power rack 5 to reset under the, the indication cross rod 16 can be hung again, the operation is very convenient, the hollow rod 2 can be adjusted in overall length and fixed to the device through the tightening of the fastening knob 3, so that the requirement of teaching by a teacher is met, and the change of the length of the device cannot influence the operation and control of the indication cross rod 16 by the teacher.

Claims

1. The utility model provides a teaching and teaching pole convenient to instruct, includes hollow pole, last hollow pole and instruction horizontal pole down, its characterized in that: the upper hollow rod is inserted in the upper part of the lower hollow rod, the left upper part of the lower hollow rod is screwed with a fastening knob, the rear side of the left lower part of the lower hollow rod is inserted with a pressing rod, the front side and the rear side of the left part of the pressing rod are fixedly connected with a first positioning rack, the right end of the pressing rod is fixedly connected with a power rack, the left end surface of the lower hollow rod is fixedly connected with a fixture block chute on the left side and the right side above the pressing rod, two fixture block chutes are internally clamped with U-shaped fixture blocks, the inner side end surfaces of the lower parts of the two U-shaped fixture blocks are fixedly connected with a second positioning rack matched with the first positioning rack, the power rack is transversely inserted in the lower part of the lower hollow rod, the right end surface of the lower hollow rod is fixedly connected with a sleeve on the right side of the power rack, the right end of the power rack penetrates out of the lower hollow rod and is fixedly connected with a limiting block in the, the utility model discloses a hollow pole, including pivot upper end left and right sides rigid coupling, pivot upper end left and right sides rigid coupling has the slider, it has the bull stick to peg graft in the upper hollow pole, upper hollow pole inner wall lower extreme is equipped with annular groove, bull stick lateral wall lower extreme rigid coupling has annular fixture block, annular fixture block joint is in annular groove, the inside cavity of bull stick, the inside left and right sides is equipped with the bar spout perpendicularly, pivot upper portion relies on the slider to peg graft in the bull stick, pivot top rigid coupling has first bevel gear, peg graft on upper hollow pole upper portion right side has the connecting axle, just the connecting axle has the I-shaped spacing ring in the rigid coupling of upper hollow pole right side wall department of meeting, the connecting axle left end rigid coupling has second bevel gear in upper hollow pole, first bevel gear and second bevel gear meshing, gear, first bevel gear and second bevel gear: 1, the indication cross rod is fixedly connected to the right end face of the connecting shaft.

2. An instructional teaching pole facilitating instruction as claimed in claim 1 wherein: the rubber layer is fixedly sleeved at the outer lower end of the lower hollow rod.

3. An instructional teaching pole facilitating instruction as claimed in claim 1 wherein: the upper end of the indicating cross rod is provided with a battery box, the lower end of the indicating cross rod is fixedly connected with a switch, the right end of the indicating cross rod is fixedly connected with a plurality of LED lamps, and the indicating cross rod, the battery box and the switch are electrically connected.