CN211906633U

CN211906633U - Portable teaching stick

Info

Publication number: CN211906633U
Application number: CN202020879364.2U
Authority: CN
Inventors: 王福华
Original assignee: Guangzhou Space Cultural And Creative Entertainment Technology Co ltd
Current assignee: Guangzhou Space Cultural And Creative Entertainment Technology Co ltd
Priority date: 2020-05-25
Filing date: 2020-05-25
Publication date: 2020-11-10
Anticipated expiration: 2030-05-25

Abstract

The utility model discloses a portable teaching stick, which comprises an outer rod, wherein an inner rod is movably inserted in the outer rod, the inner wall of the outer rod is provided with a guide groove, the rear section of the inner rod is provided with a guide block which can limit the movement along the guide groove, vertical plates are fixed at the front end and the rear end of the outer rod, two middle rods which are arranged left and right are fixed between the vertical plates at two sides, a sleeve belt which can be sleeved on an arm is arranged between the middle rods at two sides, and a linkage mechanism which can drive the inner rod to move forwards from the inner part of the outer rod is arranged on the vertical plates. Is not easy to lose.

Description

Portable teaching stick

Technical Field

The utility model relates to a teaching aid field, in particular to portable teaching stick.

Background

The teaching stick is teaching aid, often need use when the teacher gives a lecture, traditional teaching stick is a simple stick or the flexible stick that has flexible function, can be used as directive object or figure to teach, current teaching stick simple structure just does not have more expansibility function, if need use other apparatus when using, for example chalk ruler etc., need put down the teaching stick of hand, just can use other apparatus, cause certain hindrance when giving a lecture, and traditional telescopic teaching stick needs manual with the teaching stick shrink, it is very inconvenient when carrying the teaching stick, need place and take at pocket or staff, and the individual is less loses easily, cause a lot of inconveniences in the teaching.

Thus, further improvements are needed in the existing teaching sticks.

Disclosure of Invention

To the above prior art, the utility model discloses the technique that will realize is: through setting up the teaching stick on the arm, when needs use, the simple activity through the finger just can drive flexible teaching stick and stretch out the use to only need relax flexible teaching stick with the finger when closing and will retract automatically, the teacher's hand of being convenient for can take other article, reaches simple to use convenient operation's characteristics, has higher portable nature, also is difficult for losing.

In order to achieve the above purpose, the utility model adopts the following scheme:

the utility model provides a portable teaching stick, is including the outer pole activity is inserted and is equipped with interior pole the outer pole inner wall is equipped with the guide slot interior pole back end is equipped with the guide block that can follow the spacing activity of guide slot both ends are fixed with the riser around the outer pole, are fixed with the king-rod that sets up about two between the riser of both sides, are equipped with the cuff belt that can overlap on the arm between the king-rod of both sides be equipped with on the riser and can drive interior pole from the link gear of outer pole interior pole activity forward be equipped with on the outer pole and can drive the canceling release mechanical system of interior pole after the activity forward backward.

Further, the utility model provides a link gear is including setting up on the riser that is located the front side and can pivoted big line wheel be fixed with little line wheel on the big line wheel side wall be equipped with wind spring one between big line wheel another side wall and the riser tie up on the little line wheel and be equipped with cotton rope one interior pole rear end is fixed with and ties up the line piece outer pole front end downside is provided with can pivoted intermediate wheel tie up on the big line wheel and be equipped with cotton rope two, the middle part book of cotton rope two is established on the intermediate wheel, the tip of cotton rope two is tied up and is established on tying up the line piece.

Further, the utility model provides a canceling release mechanical system is including a plurality of shrinkage pools of equipartition array setting in pole one side outer pole anterior segment one side is fixed with the flange upper wall is equipped with can the pivoted gear, the shrinkage pool on the pole in the gear engagement the gear lower wall is fixed with the inserted bar that alternates to the flange bottom be equipped with wind spring two between inserted bar and the flange.

Furthermore, a fingerstall which can be sleeved on the finger of a user is tied up at one end of the cotton rope.

Preferably, the utility model provides an interior pole bottom is equipped with the cavity that can let second cotton rope pass, also can be equipped with the cavity bottom the outer pole.

Further, the utility model provides a riser bottom is fixed with the arc.

Preferably, the elastic fiber is selected as the material of the strap, and a belt with a buckling mode can be used.

To sum up, the utility model discloses for its beneficial effect of prior art is: the utility model discloses simple structure, convenient to use through setting up the bar of imparting knowledge to students on the arm, stretches out through the interior pole of the simple operation drive bar of finger, can carry out classroom teaching more conveniently, and teacher's hand can also be taken other article and the bar of imparting knowledge to students and cooperate the use, makes the teaching process swift simple more, and individual less can hide in the clothing sleeve as portable usefulness at ordinary times, is difficult for losing.

Drawings

Fig. 1 is one of the schematic perspective views of the present invention;

fig. 2 is a second perspective view of the present invention;

fig. 3 is a schematic view of the cross-sectional structure of the outer rod and the inner rod of the present invention.

Detailed Description

The invention will be further described with reference to the following description and embodiments in conjunction with the accompanying drawings:

as shown in fig. 1 to 3, a portable teaching stick comprises an outer rod 1, an inner rod 11 is movably inserted into the outer rod 1, a guide groove 12 is arranged on the inner wall of the outer rod 1, a guide block 13 capable of limiting movement along the guide groove 12 is arranged at the rear section of the inner rod 11, vertical plates 2 are fixed at the front end and the rear end of the outer rod 1, two middle rods 21 arranged left and right are fixed between the vertical plates 2 at two sides, a sleeve belt 22 capable of being sleeved on an arm is arranged between the middle rods 21 at two sides, a linkage mechanism 3 capable of driving the inner rod 11 to move forward from the inner rod 1 is arranged on the vertical plate 2, a reset mechanism 4 capable of driving the inner rod 11 moving forward to reset backward is arranged on the outer rod 1, and when the teaching stick works, the inner rod is arranged in the guide groove through the guide block so that only axial movement can be performed on the outer rod, the device can have a portable function by sleeving the sleeve belt on the arm, when the linkage mechanism is driven by fingers, the inner rod extends forwards, the finger posture is kept, the inner rod can be kept in the extending state, and therefore teaching is carried out.

In the utility model, the link gear 3 comprises a big wire wheel 31 which is arranged on a vertical plate 2 positioned at the front side and can rotate, a small wire wheel 32 is fixed on one side wall surface of the big wire wheel 31, a coil spring 33 is arranged between the other side wall surface of the big wire wheel 31 and the vertical plate 2, a wire rope 34 is tied on the small wire wheel 32, a wire tying block 35 is fixed at the rear end of the inner rod 11, a rotatable middle wheel 36 is arranged at the lower side of the front end of the outer rod 1, a wire rope two 37 is tied on the big wire wheel 31, the middle part of the wire rope two 37 is coiled on the middle wheel 36, the end part of the wire rope two 37 is tied on the wire tying block 35, when the wire rope one is pulled, the small wire wheel rotates to discharge the wire rope, the big wire wheel is driven to rotate to receive the wire rope two, the second rope is wound on the large-line wheel, the end part of the second rope is tied on the wire tying block, so that the inner rod is driven to extend forwards when the second rope is wound, the first coil spring is in a tightening state at the moment, the small-line wheel and the large-line wheel are designed by utilizing the circumference ratio to enable the first rope to be pulled out by a small distance to drive the second rope to be wound by a large distance, the bending of fingers is achieved to enable the inner rod to extend out, and the middle wheel is used for enabling the second rope to move smoothly and not to be clamped at the front end of the outer rod.

In the utility model, the resetting mechanism 4 comprises a plurality of concave holes 41 which are uniformly arranged on one side of the inner rod 11 in an array manner, a convex plate 42 is fixed on one side of the front section of the outer rod 1, a rotatable gear 43 is arranged on the upper wall of the convex plate 42, the gear 43 is meshed with the concave holes 41 on the inner rod 11, an inserting rod 44 which is inserted to the bottom of the convex plate 42 is fixed on the lower wall of the gear 43, a coil spring II 45 is arranged between the inserting rod 44 and the convex plate 42, when fingers are loosened during operation, a coil spring I is loosened from a tightening state, the coil spring I drives a small wire wheel and a large wire wheel to rotate, the wire I and the wire II are folded, the inner rod is in an extending state at the moment, the inserting rod drives the inserting rod to rotate, the gear drives the gear to rotate, and the gear can be driven to reset backwards, and the second coil spring is in a tightened state when the inner rod extends out, after the fingers are loosened, the inner rod is in an unstressed state, and the second coil spring loosens to drive the gear to rotate.

The utility model discloses in the dactylotheca 5 that can overlap on the user's finger is tied up to a 34 tip of cotton rope, embolias the finger with the finger and sheathes in, and the preferred second joint at the finger with the dactylotheca cover is convenient for have longer pulling distance.

The utility model discloses in 11 bottoms in interior pole are equipped with the cavity 6 that can let two 37 of cotton ropes pass, and the during operation, two ability in the cavity internalizations of cotton rope prevent the dead interior pole of card.

The utility model discloses in 2 bottoms of riser are fixed with arc 7, and the arc is convenient for laminate arm skin, makes the user more comfortable after the dress, can suitably increase the cotton and make contact skin more comfortable bottom the arc.

The utility model discloses in elastic fiber is chooseed for use to the 22 materials of shroud ring, is convenient for tighten up on the arm, and the holding power is better.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above, and it should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only illustrative of the principles of the present invention, and the present invention can be modified in various ways without departing from the spirit and scope of the present invention, and these modifications and changes fall into the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a portable teaching stick, is including outer pole (1) activity is inserted and is equipped with interior pole (11), its characterized in that: the inner wall of the outer rod (1) is provided with a guide groove (12), the rear section of the inner rod (11) is provided with a guide block (13) capable of moving along the guide groove (12) in a limiting manner, vertical plates (2) are fixed at the front and rear ends of the outer rod (1), two middle rods (21) arranged on the left and right sides are fixed between the vertical plates (2) on two sides, a sleeve belt (22) capable of being sleeved on an arm is arranged between the middle rods (21) on two sides, a linkage mechanism (3) capable of driving the inner rod (11) to move forwards from the inner part of the outer rod (1) is arranged on the vertical plates (2), and a reset mechanism (4) capable of driving the inner rod (11) moving forwards after moving forwards to reset is arranged on the outer rod (1).

2. The portable teaching stick as claimed in claim 1, wherein the linkage mechanism (3) comprises a large wire wheel (31) which is arranged on a vertical plate (2) located on the front side and can rotate, a small wire wheel (32) is fixed on one side wall surface of the large wire wheel (31), a coil spring I (33) is arranged between the other side wall surface of the large wire wheel (31) and the vertical plate (2), a wire rope I (34) is tied on the small wire wheel (32), a wire binding block (35) is fixed at the rear end of the inner rod (11), a rotatable middle wheel (36) is arranged on the lower side of the front end of the outer rod (1), a wire rope II (37) is arranged on the large wire wheel (31), the middle part of the wire rope II (37) is rolled on the middle wheel (36), and the end part of the wire rope II (37) is tied on the wire binding block (35).

3. The portable teaching stick as claimed in claim 2, wherein the reset mechanism (4) comprises a plurality of concave holes (41) uniformly distributed and arrayed on one side of the inner rod (11), a convex plate (42) is fixed on one side of the front section of the outer rod (1), a gear (43) capable of rotating is arranged on the upper wall of the convex plate (42), the gear (43) is meshed with the concave holes (41) on the inner rod (11), an inserted rod (44) inserted into the bottom of the convex plate (42) is fixed on the lower wall of the gear (43), and a coil spring II (45) is arranged between the inserted rod (44) and the convex plate (42).

4. A portable teaching stick as claimed in claim 2, wherein a finger sleeve (5) is tied to the first end of the string (34) to fit over the user's finger.

5. A portable teaching stick as claimed in claim 2, wherein a cavity (6) is provided in the bottom of the inner pole (11) through which a second string (37) can be threaded.

6. A portable teaching stick as claimed in claim 2, characterized in that an arc-shaped plate (7) is fixed to the bottom of the vertical plate (2).

7. A portable educational rod in accordance with claim 1 wherein the strap (22) is made of a material selected from the group consisting of elastane.