CN110544413B - Pointer convenient for teaching - Google Patents
Pointer convenient for teaching Download PDFInfo
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- CN110544413B CN110544413B CN201910768764.8A CN201910768764A CN110544413B CN 110544413 B CN110544413 B CN 110544413B CN 201910768764 A CN201910768764 A CN 201910768764A CN 110544413 B CN110544413 B CN 110544413B
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- hollow tube
- handle
- clamping device
- tube
- clamping
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B17/00—Teaching reading
- G09B17/02—Line indicators or other guides or masks
Abstract
The invention relates to a pointer, in particular to a pointer convenient for teaching. The technical problem to be solved is as follows: the teacher's pointer is convenient to teach and helps teachers to perform simple chalk operation on a blackboard and reduces the number of times of exchanging and using chalks and the teacher's pointer. The technical scheme of the invention is as follows: a pointer convenient for teaching comprises a handle, a first hollow tube, a first clamping device, a second hollow tube, a second clamping device and the like; the bottom in the handle is provided with a first hollow pipe which penetrates through the top of the handle, the handle is made of soft materials, the handle and the first hollow pipe are provided with first clamping devices which are matched with each other, a second hollow pipe is arranged in the first hollow pipe in a sliding mode, and the first clamping devices fix the second hollow pipe in the first hollow pipe. When the device is used, the second hollow tube and the solid tube are loosened through the first clamping device and the second clamping device, and then the second hollow tube and the solid tube are elongated.
Description
Technical Field
The invention relates to a pointer, in particular to a pointer convenient for teaching.
Background
The teacher's pointer is a stick for teaching a teacher to point out board books and pictures. A ring-like instrument for old-time teachers to punish and whip students; modern society teaching, especially the work of higher colleges is basically replaced with the electronic pointer. Although the technology is advanced, the electronic pointer is also used for teaching, but the teacher is not less popular with the traditional pointer, and the traditional pointer is popular with the teacher, so the traditional pointer is used in most areas.
The traditional teacher's pointer is simple to manufacture, but the teacher's pointer still has a lot of problems, for example, a teacher generally uses right hand to write words, and also uses the pointer with the right hand simultaneously, and the time that chalk and pointer use can be washed away mutually, so teacher's pointer and chalk need often switch over the use, even draw a horizontal line, the teacher also need put down the originally held pointer, then go to the chalk and use, go to change the pointer again after the chalk is used, can waste teacher's teaching time seriously like this, also cause the trouble for the teacher simultaneously.
Therefore, the teacher's pointer convenient for teaching needs to be developed, the teacher can be helped to perform some simple chalk operations on the blackboard, the number of times of exchanging and using the teacher's chalk and the pointer is reduced, the teaching time of the teacher can be better utilized, and meanwhile, convenience can be brought to the teacher.
Disclosure of Invention
In order to overcome the defects that the prior pointer and chalk need to be used alternately and are inconvenient for teaching, the technical problem to be solved is as follows: the teacher's pointer is convenient to teach and helps teachers to perform simple chalk operation on a blackboard and reduces the number of times of exchanging and using chalks and the teacher's pointer.
The technical scheme of the invention is as follows: a pointer convenient for teaching, which comprises a handle, a first hollow tube, a first clamping device and a second hollow tube, the second blocks the device, solid pipe and guide arm, the bottom is equipped with first hollow tube in the handle, first hollow tube passes the handle top, the handle is soft material, be equipped with the first device that blocks of mutually supporting on handle and the first hollow tube, first hollow tube slidingtype is equipped with the second hollow tube, first blocking device fixes the second hollow tube in first hollow tube, first spout has all been opened in the two wall outsides about the second hollow tube, the second through-hole has all been opened to two wall belows about the second hollow tube, solid pipe has been inserted in the second hollow tube, solid bottom of the tubes portion left and right sides all has opened the second guide way, the bottom left and right sides all is equipped with the guide arm in the second hollow tube, the guide arm inserts in the second guide way, first hollow tube, second hollow tube and solid pipe upper portion are equipped with the second that mutually supports and blocks the device.
As a preferred technical scheme of the invention, the first clamping device comprises a supporting rod, a first iron ball, a torsion spring and a clamping rod, the supporting rod is arranged at the lower parts of the left wall and the right wall in the handle, the first iron ball is connected to the inner side of the supporting rod, first slotted holes are formed in the lower parts of the left wall and the right wall of the first hollow tube, the clamping rod is rotatably connected in the first slotted holes through the torsion spring, the clamping rod is matched with the first iron ball, first clamping grooves are formed in the lower parts of the left side and the right side of the second hollow tube, the clamping rod is clamped in the first clamping grooves, and a first through hole is formed in the center of the bottom of the second hollow.
According to a preferred technical scheme, the second clamping device comprises a moving rod, a second iron ball, a first spring, an elastic sheet and a third iron ball, wherein second grooves are formed in the upper portions of the left side and the right side of the first hollow tube, the moving rod is arranged in the second grooves in a sliding mode, the inner end of the moving rod is connected with the second iron ball, the first spring is connected between the second iron ball and the inner wall of the second groove, the second iron ball is matched with the first sliding groove, the elastic sheets are arranged on the left side and the right side of the top of the second hollow tube, the top of the elastic sheets on the left side and the right side of the top of the second hollow tube is connected with the third iron ball, second clamping grooves are formed in the upper portions and the lower portions of the left side and the right.
As a preferable technical scheme, the clamping device comprises an annular ring, an air ring, a rolling ball, a connecting block, a piston, a pull rod and a second spring, the top of the solid tube is connected with the annular ring, a second straight hole is formed in the rear side of the annular ring, the air ring is arranged on the inner side of the annular ring, a second sliding groove is formed in the rear side of the inner wall of the annular ring, the rolling ball is arranged in the second sliding groove in a sliding mode, the piston is arranged in the annular ring in a sliding mode, the rolling ball is connected with the piston, the connecting block is arranged at the rear portion in the annular ring, the second spring is connected between the left side of the connecting block and the right side of the piston, the pull rod is arranged on the rear side of the piston and penetrates through the second straight hole, third through holes are formed in the rear.
The invention further comprises a first inserted bar, a sliding rail, a sliding block, a second inserted bar and a first connecting bar, wherein the bottom of the solid tube is connected with the first inserted bar, the first inserted bar penetrates through the first through hole, the lower part of the right side of the first inserted bar is provided with a first groove, the right side of the bottom of the second hollow tube is provided with the sliding rail, the sliding block is arranged on the sliding rail in a sliding mode, the bottom of the sliding block is connected with the second inserted bar, the left end of the second inserted bar is located in the first groove, the right end of the second inserted bar is rotatably connected with the first connecting bar, and the right end of the first connecting bar is rotatably connected to a clamping bar on.
As a preferred technical scheme, the multifunctional electric wrench also comprises a rotating block and a hanging rope, wherein the bottom of the handle is provided with a fourth through hole, the rotating block is rotatably connected in the fourth through hole, and the bottom end of the rotating block is connected with the hanging rope.
The beneficial effects are that: when the pointer is used, the second hollow tube and the solid tube are loosened through the first clamping device and the second clamping device, then the pointer is elongated, the second hollow tube and the solid tube are fixed through the second clamping device after the second hollow tube and the solid tube are elongated, the pointer keeps the length for use, and the second hollow tube and the solid tube retract into the first hollow tube when the pointer is carried.
Drawings
Fig. 1 is a schematic front view of the present invention.
Fig. 2 is a front view of the first seizing device according to the present invention.
Fig. 3 is a front view of a second jamming device according to the present invention.
Fig. 4 is a schematic top view of the clamping device of the present invention.
Fig. 5 is a partial schematic front view of the present invention.
Labeled as: 1 … handle, 2 … first hollow tube, 3 … first latching device, 31 … support rod, 32 … first iron ball, 33 … first straight hole, 34 … torsion spring, 35 … latching rod, 36 … first latching groove, 37 … first through hole, 4 … second hollow tube, 5 … first sliding groove, 6 … second through hole, 7 … second latching device, 71 … second groove, 72 … moving rod, 73 … second iron ball, 74 … first spring, 75 … shrapnel, 76 … third iron ball, 77 … second latching groove, 8 … solid tube, 9 … second guiding groove, 10 … guide rod, 11 … clamping device, 111 … annular ring, 112 … second straight hole, 113 … air ring, … second sliding groove, 115 …, … connecting block …, … piston, 36118 first latching device, 3 … first sliding block, … first sliding block …, … sliding block …, 3613 first sliding block …, … first sliding block 3613 first sliding block …, 3613 sliding block …, 3614 third sliding block, 16 … second inserted bar, 17 … first connected bar, 18 … fourth through hole, 19 … rotary block, 20 … hanging rope.
Detailed Description
The invention is described in further detail below with reference to the drawings and the detailed description, but the invention is not limited to the scope of protection and application.
Example 1
A teacher's pointer convenient for teaching is shown in figure 1-3 and comprises a handle 1, a first hollow tube 2, a first clamping device 3, a second hollow tube 4, a second clamping device 7, a solid tube 8 and guide rods 10, wherein the first hollow tube 2 is arranged at the bottom in the handle 1, the first hollow tube 2 penetrates through the top of the handle 1, the handle 1 is made of soft material, the first clamping device 3 which is matched with the handle 1 and the first hollow tube 2 is arranged on the handle 1, the second hollow tube 4 is arranged in the first hollow tube 2 in a sliding manner, the second hollow tube 4 is fixed in the first hollow tube 2 by the first clamping device 3, first sliding grooves 5 are respectively arranged at the outer sides of the left wall and the right wall of the second hollow tube 4, second through holes 6 are respectively arranged below the left wall and the right wall of the second hollow tube 4, the solid tube 8 is inserted in the second hollow tube 4, second guide grooves 9 are respectively arranged at the left side and the right side of the bottom of the solid tube 8, the guide rods, the second hollow pipe 4 is connected with a guide rod 10 in a welding connection mode, the guide rod 10 is inserted into the second guide groove 9, and the upper parts of the first hollow pipe 2, the second hollow pipe 4 and the solid pipe 8 are provided with second clamping devices 7 which are matched with each other.
Example 2
A teacher's pointer convenient for teaching is shown in figure 1-3 and comprises a handle 1, a first hollow tube 2, a first clamping device 3, a second hollow tube 4, a second clamping device 7, a solid tube 8 and guide rods 10, wherein the first hollow tube 2 is arranged at the bottom in the handle 1, the first hollow tube 2 penetrates through the top of the handle 1, the handle 1 is made of soft material, the first clamping device 3 which is matched with the handle 1 and the first hollow tube 2 is arranged on the handle 1, the second hollow tube 4 is arranged in the first hollow tube 2 in a sliding manner, the second hollow tube 4 is fixed in the first hollow tube 2 by the first clamping device 3, first sliding grooves 5 are respectively arranged at the outer sides of the left wall and the right wall of the second hollow tube 4, second through holes 6 are respectively arranged below the left wall and the right wall of the second hollow tube 4, the solid tube 8 is inserted in the second hollow tube 4, second guide grooves 9 are respectively arranged at the left side and the right side of the bottom of the solid tube 8, the guide rods, the guide rod 10 is inserted into the second guide groove 9, and the upper parts of the first hollow tube 2, the second hollow tube 4 and the solid tube 8 are provided with a second clamping device 7 which is matched with each other.
Example 3
A teacher's pointer convenient for teaching is shown in figure 1-3 and comprises a handle 1, a first hollow tube 2, a first clamping device 3, a second hollow tube 4, a second clamping device 7, a solid tube 8 and guide rods 10, wherein the first hollow tube 2 is arranged at the bottom in the handle 1, the first hollow tube 2 penetrates through the top of the handle 1, the handle 1 is made of soft material, the first clamping device 3 which is matched with the handle 1 and the first hollow tube 2 is arranged on the handle 1, the second hollow tube 4 is arranged in the first hollow tube 2 in a sliding manner, the second hollow tube 4 is fixed in the first hollow tube 2 by the first clamping device 3, first sliding grooves 5 are respectively arranged at the outer sides of the left wall and the right wall of the second hollow tube 4, second through holes 6 are respectively arranged below the left wall and the right wall of the second hollow tube 4, the solid tube 8 is inserted in the second hollow tube 4, second guide grooves 9 are respectively arranged at the left side and the right side of the bottom of the solid tube 8, the guide rods, the guide rod 10 is inserted into the second guide groove 9, and the upper parts of the first hollow tube 2, the second hollow tube 4 and the solid tube 8 are provided with a second clamping device 7 which is matched with each other.
The second clamping device 7 comprises a moving rod 72, a second iron ball 73, a first spring 74, elastic pieces 75 and a third iron ball 76, wherein second grooves 71 are formed in the upper portions of the left side and the right side of the first hollow tube 2, the moving rod 72 is arranged in the second grooves 71 in a sliding mode, the inner end of the moving rod 72 is connected with the second iron ball 73, the moving rod 72 is connected with the second iron ball 73 in a welding connection mode, the first spring 74 is connected between the inner walls of the second iron ball 73 and the second grooves 71, the second iron ball 73 is matched with the first sliding groove 5, the elastic pieces 75 are arranged on the left side and the right side of the top of the second hollow tube 4, the third iron balls 76 are connected with the tops of the elastic pieces 75 on the left side and the right side of the left side of the solid tube 8, second clamping grooves 77 are formed in the upper portions and the lower portions of the left side and the right side of the solid tube 8, and the.
Example 4
A teacher's pointer convenient for teaching is shown in figures 1-4 and comprises a handle 1, a first hollow tube 2, a first clamping device 3, a second hollow tube 4, a second clamping device 7, a solid tube 8 and guide rods 10, wherein the first hollow tube 2 is arranged at the bottom in the handle 1, the first hollow tube 2 penetrates through the top of the handle 1, the handle 1 is made of soft material, the first clamping device 3 which is matched with the handle 1 and the first hollow tube 2 is arranged on the handle 1, the second hollow tube 4 is arranged in the first hollow tube 2 in a sliding manner, the second hollow tube 4 is fixed in the first hollow tube 2 by the first clamping device 3, first sliding grooves 5 are respectively arranged at the outer sides of the left wall and the right wall of the second hollow tube 4, second through holes 6 are respectively arranged below the left wall and the right wall of the second hollow tube 4, the solid tube 8 is inserted in the second hollow tube 4, second guide grooves 9 are respectively arranged at the left side and the right side of the bottom of the solid tube 8, the guide rods, the guide rod 10 is inserted into the second guide groove 9, and the upper parts of the first hollow tube 2, the second hollow tube 4 and the solid tube 8 are provided with a second clamping device 7 which is matched with each other.
The second clamping device 7 comprises a moving rod 72, a second iron ball 73, a first spring 74, elastic pieces 75 and third iron balls 76, second grooves 71 are formed in the upper portions of the left side and the right side of the first hollow tube 2, the moving rod 72 is arranged in the second grooves 71 in a sliding mode, the inner ends of the moving rod 72 are connected with the second iron balls 73, the first spring 74 is connected between the second iron balls 73 and the inner walls of the second grooves 71, the second iron balls 73 are matched with the first sliding grooves 5, the elastic pieces 75 are arranged on the left side and the right side of the top of the second hollow tube 4, the third iron balls 76 are connected to the tops of the elastic pieces 75 on the left side and the right side, second clamping grooves 77 are formed in the upper portions and the lower portions of the left side and the right side of the solid tube 8, and the.
The clamping device 11 is further included, the clamping device 11 includes an annular ring 111, an air ring 113, rolling balls 115, a connecting block 116, a piston 117, a pull rod 118 and a second spring 119, the top of the solid tube 8 is connected with the annular ring 111, the solid tube 8 is connected with the annular ring 111 through a welding connection mode, a second straight hole 112 is formed in the rear side of the annular ring 111, the air ring 113 is arranged on the inner side of the annular ring 111, a second sliding groove 114 is formed in the rear side of the inner wall of the annular ring 111, the rolling balls 115 are arranged in the second sliding groove 114 in a sliding mode, the piston 117 is arranged in the annular ring 111 in a sliding mode, the rolling balls 115 are connected with the piston 117, the connecting block 116 is arranged in the rear portion of the annular ring 111, the annular ring 111 is connected with the connecting block 116 through a welding connection mode, the second spring 119 is connected between the left side of the connecting block 116 and the right side of the piston 117, the pull rod 118 is arranged on the, third through holes 1110 are formed in the rear portions of the annular ring 111 and the balloon 113, and the two third through holes 1110 are communicated.
Example 5
A teacher's pointer convenient for teaching is shown in figures 1-5 and comprises a handle 1, a first hollow tube 2, a first clamping device 3, a second hollow tube 4, a second clamping device 7, a solid tube 8 and guide rods 10, wherein the first hollow tube 2 is arranged at the bottom in the handle 1, the first hollow tube 2 penetrates through the top of the handle 1, the handle 1 is made of soft material, the first clamping device 3 which is matched with the handle 1 and the first hollow tube 2 is arranged on the handle 1, the second hollow tube 4 is arranged in the first hollow tube 2 in a sliding manner, the second hollow tube 4 is fixed in the first hollow tube 2 by the first clamping device 3, first sliding grooves 5 are respectively arranged at the outer sides of the left wall and the right wall of the second hollow tube 4, second through holes 6 are respectively arranged below the left wall and the right wall of the second hollow tube 4, the solid tube 8 is inserted in the second hollow tube 4, second guide grooves 9 are respectively arranged at the left side and the right side of the bottom of the solid tube 8, the guide rods, the guide rod 10 is inserted into the second guide groove 9, and the upper parts of the first hollow tube 2, the second hollow tube 4 and the solid tube 8 are provided with a second clamping device 7 which is matched with each other.
The second clamping device 7 comprises a moving rod 72, a second iron ball 73, a first spring 74, elastic pieces 75 and third iron balls 76, second grooves 71 are formed in the upper portions of the left side and the right side of the first hollow tube 2, the moving rod 72 is arranged in the second grooves 71 in a sliding mode, the inner ends of the moving rod 72 are connected with the second iron balls 73, the first spring 74 is connected between the second iron balls 73 and the inner walls of the second grooves 71, the second iron balls 73 are matched with the first sliding grooves 5, the elastic pieces 75 are arranged on the left side and the right side of the top of the second hollow tube 4, the third iron balls 76 are connected to the tops of the elastic pieces 75 on the left side and the right side, second clamping grooves 77 are formed in the upper portions and the lower portions of the left side and the right side of the solid tube 8, and the.
The clamping device 11 is further included, the clamping device 11 comprises an annular ring 111, an air ring 113, rolling balls 115, a connecting block 116, a piston 117, a pull rod 118 and a second spring 119, the top of the solid tube 8 is connected with the annular ring 111, a second straight hole 112 is formed in the rear side of the annular ring 111, the air ring 113 is arranged on the inner side of the annular ring 111, a second sliding groove 114 is formed in the rear side of the inner wall of the annular ring 111, the rolling balls 115 are arranged in the second sliding groove 114 in a sliding mode, the piston 117 is arranged in the annular ring 111 in a sliding mode, the rolling balls 115 are connected with the piston 117, the connecting block 116 is arranged in the rear portion of the annular ring 111, the second spring 119 is connected between the left side of the connecting block 116 and the right side of the piston 117, the pull rod 118 is arranged on the rear side of the piston 117, the pull rod 118 penetrates through the second straight hole 112.
Still including first inserted bar 12, slide rail 14, slider 15, second inserted bar 16 and head rod 17, 8 bottoms of solid tube are connected with first inserted bar 12, first inserted bar 12 passes first through-hole 37, first inserted bar 12 right side lower part is opened has first recess 13, 4 bottom right sides of second hollow tube are equipped with slide rail 14, the gliding style is equipped with slider 15 on slide rail 14, slider 15 bottom is connected with second inserted bar 16, the 16 left ends of second inserted bar are located first recess 13, 16 right-hand members rotary type of second inserted bar is connected with head rod 17, 17 right-hand members rotary type of head rod are connected on the kelly 35 on right side.
The handle is characterized by further comprising a rotating block 19 and a hanging rope 20, a fourth through hole 18 is formed in the bottom of the handle 1, the rotating block 19 is rotatably connected in the fourth through hole 18, and the hanging rope 20 is connected to the bottom end of the rotating block 19.
When people need to use the pointer, firstly, the left side and the right side of the handle 1 are pressed inwards with force, so that the first clamping device 3 loosens the second hollow tube 4, then the solid tube 8 is pulled upwards, the second clamping device 7 is loosened, the solid tube 8 moves upwards to a certain degree, the second hollow tube 4 is driven to move upwards, the pointer is extended, when the solid tube 8 and the second hollow tube 4 move upwards to a proper position, the solid tube 8 and the second hollow tube 4 are clamped by the second clamping device 7, so that the pointer can keep a height, then the pointer can be used, when the pointer is not needed to be used, the solid tube 8 is pressed downwards with proper force, the solid tube 8 is loosened by the second clamping device 7, then, a user presses the solid tube 8 and the second hollow tube 4 downwards to reset, the second hollow tube 4 moves downwards so that the pointer is clamped by the first clamping device 3, at the same time the second seizing means 7 will also seize the solid pipe 8. So the teacher's pointer is elongated when using, can shorten when carrying, has made things convenient for the user to carry and use.
When a user uses the pointer, the user presses the left side and the right side of the handle 1 inwards with force to enable the support rods 31 on the left side and the right side to move inwards, the support rods 31 move inwards to drive the first iron balls 32 to move inwards, the first iron balls 32 move inwards to enable the lower ends of the clamping rods 35 to move inwards, the lower ends of the clamping rods 35 move inwards to enable the upper ends of the clamping rods 35 to move outwards to loosen the second hollow tubes 4, the torsion springs 34 are stretched, then the solid tubes 8 can be pulled upwards to a proper position, then the handle 1 can be loosened, the clamping rods 35 reset under the action of the torsion springs 34, when the user does not need to use the pointer, the solid tubes 8 are pushed downwards to move downwards, the solid tubes 8 move downwards to drive the second hollow tubes 4 to move downwards, the second hollow tubes 4 move downwards to be in contact with the clamping rods 35 to push the clamping rods 35 to move outwards, after the clamping rods 35 are clamped into the, under the action of the torsion spring 34, the second hollow tube 4 and the device thereon can be directly clamped, and the second hollow tube 4 and the device thereon can be easily fixed without pressing the handle 1 by hands.
Initially, the first spring 74 is in a compressed state. When a user needs to use the pointer, the solid tube 8 is pulled upwards, the third iron balls 76 on the left side and the right side are separated from the second clamping groove 77 above, when the solid tube 8 is pulled upwards to a proper position, the third iron balls 76 are clamped in the second clamping groove 77 below the solid tube 8, the solid tube 8 is fixed, meanwhile, the moving rods 72 on the left side and the right side move inwards under the action of the first spring 74, the moving rods 72 move inwards to drive the second iron balls 73 to move inwards to be clamped in the second through holes 6, so that the position of the second hollow tube 4 is fixed, the positions of the solid tube 8 and the position of the second hollow tube 4 can be fixed, the pointer can be used while keeping the current length, when the pointer needs to be folded, the solid tube 8 is pushed downwards, the third iron balls 76 can be popped out of the second clamping groove 77 below, and the second iron balls 73 can be moved out of the second through holes 6, the first spring 74 is compressed and the pointer is then retracted to its original length and the third iron ball 76 re-engages the second upper detent 77. Thus, the solid tube 8 and the second hollow tube 4 can be conveniently fixed and loosened, and the use by a user is convenient.
When the user uses the pointer, the user can push the pull rod 118 backwards, the pull rod 118 moves to drive the piston 117 to move backwards, the second spring 119 is compressed, the piston 117 moves backwards to enable air in the air ring 113 to be pumped out, the air ring 113 becomes flat, then chalk 1111 is put into the air ring 113, the pull rod 118 is loosened, the piston 117 moves forwards to reset under the action of the second spring 119, the piston 117 moves forwards to enable air in the annular ring 111 to be squeezed into the air ring 113, the air ring 113 is inflated to be enlarged to clamp the chalk 1111, and therefore the chalk 1111 can be fixed on the pointer device and then can be used. Therefore, the pointer has a writing function, the times of exchanging and using the chalk 1111 and the pointer are reduced, and the teacher can conveniently learn.
When a user presses the handle 1, the clamping rod 35 pulls the first connecting rod 17 outwards to move outwards, the first connecting rod 17 moves outwards to drive the second inserting rod 16 to move outwards, the second inserting rod 16 is separated from the first groove 13, the first inserting rod 12 is not clamped any more, and at this time, the pointer can be stretched, when the user pushes the solid tube 8 downwards, the solid tube 8 moves downwards to drive the first insert rod 12 to move downwards, then the user presses the handle 1 to drive the second insert rod 16 to move outwards, when the first insert rod 12 moves to the initial position, the user releases the grip 1, the clamping rod 35 pushes the first connecting rod 17 inwards to move inwards, the first connecting rod 17 moves inwards to drive the second insert rod 16 to move inwards, the second insert rod 16 moves inwards to insert back into the first groove 13, this further fixes the solid tube 8, preventing the solid tube 8 from being pulled out by an external force.
When the user does not need to use the pointer, the user can hang the device at a corresponding position through the hanging rope 20, and the pointer is convenient to store.
The embodiments described above are provided to enable persons skilled in the art to make or use the invention and that modifications or variations can be made to the embodiments described above by persons skilled in the art without departing from the inventive concept of the present invention, so that the scope of protection of the present invention is not limited by the embodiments described above but should be accorded the widest scope consistent with the innovative features set forth in the claims.
Claims (2)
1. A teacher's pointer convenient for teaching comprises a handle (1), a first hollow tube (2), a first clamping device (3) and a second hollow tube (4), wherein the first hollow tube (2) is arranged at the bottom in the handle (1), the first hollow tube (2) penetrates through the top of the handle (1), the handle (1) is made of soft materials, the handle (1) and the first hollow tube (2) are provided with the first clamping device (3) which is matched with each other, the second hollow tube (4) is arranged in the first hollow tube (2) in a sliding manner, the second hollow tube (4) is fixed in the first hollow tube (2) by the first clamping device (3), the teacher's pointer is characterized by further comprising a second clamping device (7), a solid tube (8) and a guide rod (10), first sliding grooves (5) are formed in the outer sides of the left wall and the right wall of the second hollow tube (4), second through holes (6) are formed below the left wall and the right wall of the second hollow tube (4, a solid pipe (8) is inserted into the second hollow pipe (4), second guide grooves (9) are formed in the left side and the right side of the bottom of the solid pipe (8), guide rods (10) are arranged on the left side and the right side of the bottom in the second hollow pipe (4), the guide rods (10) are inserted into the second guide grooves (9), and second clamping devices (7) which are matched with each other are arranged at the upper parts of the first hollow pipe (2), the second hollow pipe (4) and the solid pipe (8); the first clamping device (3) comprises a supporting rod (31), a first iron ball (32), a torsion spring (34) and a clamping rod (35), the supporting rods (31) are arranged on the lower portions of the left wall and the right wall in the handle (1), the first iron ball (32) is connected to the inner side of each supporting rod (31), first slotted holes (33) are formed in the lower portions of the left wall and the right wall of the first hollow tube (2), the clamping rods (35) are rotatably connected in the first slotted holes (33) through the torsion springs (34), the clamping rods (35) are matched with the first iron balls (32), first clamping grooves (36) are formed in the lower portions of the left side and the right side of the second hollow tube (4), the clamping rods (35) are clamped in the first clamping grooves (36), and a first through hole (37) is formed in the center of the bottom of the second hollow tube (4); the second clamping device (7) comprises a moving rod (72), a second iron ball (73), a first spring (74), an elastic sheet (75) and a third iron ball (76), the upper parts of the left side and the right side in the first hollow pipe (2) are respectively provided with a second groove (71), the second grooves (71) are internally provided with a movable rod (72) in a sliding manner, the inner end of the movable rod (72) is connected with a second iron ball (73), a first spring (74) is connected between the second iron ball (73) and the inner wall of the second groove (71), the second iron ball (73) is matched with the first chute (5), the left side and the right side of the top of the second hollow pipe (4) are respectively provided with an elastic sheet (75), the tops of the elastic sheets (75) on the left side and the right side are respectively connected with a third iron ball (76), the upper part and the lower part of the left side and the right side of the solid pipe (8) are respectively provided with a second clamping groove (77), and the third iron; the clamping device (11) comprises an annular ring (111), an air ring (113), a rolling ball (115), a connecting block (116), a piston (117), a pull rod (118) and a second spring (119), the top of the solid tube (8) is connected with the annular ring (111), a second straight hole (112) is formed in the rear side of the annular ring (111), the air ring (113) is arranged on the inner side of the annular ring (111), a second sliding chute (114) is formed in the rear side of the inner wall of the annular ring (111), the rolling ball (115) is arranged in the second sliding chute (114) in a sliding manner, the piston (117) is arranged in the annular ring (111) in a sliding manner, the rolling ball (115) is connected with the piston (117), the connecting block (116) is arranged in the rear portion of the annular ring (111), the second spring (119) is connected between the left side of the connecting block (116) and the right side of the piston (117), the pull rod (118) is arranged on the rear side of the piston (117), third through holes (1110) are formed in the rear portions of the annular ring (111) and the balloon (113), and the two third through holes (1110) are communicated; still including first inserted bar (12), slide rail (14), slider (15), second inserted bar (16) and head rod (17), solid core pipe (8) bottom is connected with first inserted bar (12), first inserted bar (12) pass first through-hole (37), first recess (13) have been opened to first inserted bar (12) right side lower part, second hollow tube (4) bottom right side is equipped with slide rail (14), the gliding style is equipped with slider (15) on slide rail (14), slider (15) bottom is connected with second inserted bar (16), second inserted bar (16) left end is located first recess (13), second inserted bar (16) rotary type right-hand member is connected with head rod (17), head rod (17) right-hand member is connected on rotation type kelly (35) on right side.
2. The teacher's pointer convenient for teaching as claimed in claim 1, further comprising a rotation block (19) and a hanging rope (20), wherein the bottom of the handle (1) is provided with a fourth through hole (18), the rotation block (19) is rotatably connected to the fourth through hole (18), and the hanging rope (20) is connected to the bottom end of the rotation block (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910768764.8A CN110544413B (en) | 2019-08-20 | 2019-08-20 | Pointer convenient for teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910768764.8A CN110544413B (en) | 2019-08-20 | 2019-08-20 | Pointer convenient for teaching |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110544413A CN110544413A (en) | 2019-12-06 |
| CN110544413B true CN110544413B (en) | 2021-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910768764.8A Active CN110544413B (en) | 2019-08-20 | 2019-08-20 | Pointer convenient for teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110544413B (en) |
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| US6676326B2 (en) * | 2001-06-25 | 2004-01-13 | Wen-Chang Wu | Square lamp post insertional conjoinment structure |
| CN2535759Y (en) * | 2002-05-09 | 2003-02-12 | 冯藻满 | Convenient telescopic stick |
| IT1401526B1 (en) * | 2010-08-13 | 2013-07-26 | Omec Spa | TELESCOPIC EXTENSION, IN PARTICULAR FOR A APPLIANCE, AND ITS ELECTRODOMESTIC |
| US8684620B2 (en) * | 2012-08-29 | 2014-04-01 | Thomas Lin | Push button-controlled retractable bar |
| CN202904935U (en) * | 2012-11-27 | 2013-04-24 | 张丽颖 | Multifunctional telescopic pointer |
| CN203468503U (en) * | 2013-06-28 | 2014-03-12 | 张晶 | Glass wiping device |
| CN206503815U (en) * | 2017-01-11 | 2017-09-19 | 于都县水电建筑安装公司 | A kind of quick WR and hydropower construction fastener |
| CN206657523U (en) * | 2017-03-16 | 2017-11-21 | 常州信息职业技术学院 | A kind of telescopic teaching rod for multimedia teaching use |
| CN207867758U (en) * | 2017-10-17 | 2018-09-14 | 湖北工程学院 | A kind of electronic teacher pointer |
| CN207278642U (en) * | 2017-10-25 | 2018-04-27 | 苏州君之宏电器科技有限公司 | Telescoping tube |
| CN207895732U (en) * | 2017-11-03 | 2018-09-21 | 任爱真 | A kind of adjustable teacher's pointer of teaching |
| CN208625256U (en) * | 2017-11-15 | 2019-03-22 | 九牧厨卫股份有限公司 | A kind of fixed device of storage |
| CN208698282U (en) * | 2018-01-21 | 2019-04-05 | 新昌县科畅科技咨询有限公司 | A kind of Multifunctional teaching aid bar applied to mathematical education |
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| CN203070587U (en) * | 2012-12-27 | 2013-07-17 | 南京方瑞科技有限公司 | Multi-section electronic pointer |
| CN108376493A (en) * | 2018-02-07 | 2018-08-07 | 魏磊 | A kind of electric expansion teacher's pointer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110544413A (en) | 2019-12-06 |
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Effective date of registration: 20210414 Address after: No. 129, Fuqian street, Dongying City, Shandong Province Applicant after: DONGYING VOCATIONAL College Address before: 712100 Northwest University of agriculture and forestry science and technology, Yangling agricultural high tech industry demonstration zone, Xi'an City, Shaanxi Province Applicant before: Zhang Huan |
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