CN212332233U - Chalk holder with telescopic pointer - Google Patents

Abstract

The utility model discloses a chalk holder with a telescopic pointer, which comprises a shell, wherein one end of the shell is provided with a chalk placing opening, and the other end is fixed with the pointer; stamping and cutting a pointer into a plurality of sections with gradually reduced lengths and diameters by turning a die, and nesting the sections together to form a telescopic pointer; inside the shell, one side that the mouth was placed to the chalk sets up chalk fixture, chalk fixture includes: the control clamp comprises a first branch and a second branch, the tail ends of the first branch and the second branch are fixed together, the front ends of the first branch and the second branch form an opening, and a pen clip is respectively fixed at the front end openings of the first branch and the second branch; the first branch is fixedly connected with the top of the shell, and the first branch and the second branch are elastic pieces. By integrating the chalk holder and the telescopic pointer, the functions can be diversified and resources can be saved.

Description

Chalk holder with telescopic pointer

Technical Field

The utility model belongs to the technical field of teaching aid, concretely relates to pen ware is held to chalk with scalable teacher's pointer.

Background

The improvement of local education quality is seriously influenced by insufficient education resources in remote poor areas, the teaching auxiliary tools provided by the society can hardly meet various actual requirements timely and accurately, and the problems that the functions of the teaching auxiliary tools are single and solidified, and the teaching tools are difficult to perfect and configure exist. The chalk is the most common and frequently used teaching tool in the traditional classroom, and a large amount of dust can be generated when the chalk is used, so that the chalk is harmful to a human body. The teacher's pointer is the important appurtenance that is used for guiding the warning in the teaching activity, but because of the restriction of material and shape, daily carrying is inconvenient.

SUMMERY OF THE UTILITY MODEL

The patent of the utility model relates to a chalk holder with scalable teacher's pointer to among the solution prior art, when using chalk to write, the problem that direct contact skin is harmful to the human body, and traditional teacher's pointer length overlength, carry inconvenient problem.

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

a chalk holder with a telescopic pointer comprises a shell, wherein one end of the shell is provided with a chalk placing opening, and the other end of the shell is fixed with the pointer; the pointer has a telescopic function, a pointer is stamped and cut into a plurality of sections with gradually reduced lengths and diameters by turning over a die, and the sections are nested together to form the pointer;

the inside of shell sets up chalk fixture, chalk fixture is located one side that the mouth was placed to the chalk, chalk fixture includes: the control clamp comprises a first branch and a second branch, the tail ends of the first branch and the second branch are fixed together, the front ends of the first branch and the second branch form an opening, and a pen clip is respectively fixed at the front end openings of the first branch and the second branch; the first branch is fixedly connected with the top of the shell, and the first branch and the second branch are elastic pieces.

Specifically, two adjacent sections of the pointer are nested together, and the tail of the section with the smaller diameter is provided with a baffle.

Specifically, a rotating mechanism is further arranged inside the shell; the rotating mechanism includes: the adjusting gear, the rotating shaft, the transverse bearing, the plug and the vertical shaft; the outer ring of the transverse bearing is fixed at the top of the shell through a connecting piece;

one end of the rotating shaft is fixedly connected with the inner ring of the adjusting gear, and the other end of the rotating shaft is connected with one end of the transverse bearing inner ring through a spot welding technology; the tail end of the vertical shaft is fixedly connected with the top of the plug through a spot welding technology, and the upper end of the vertical shaft is in a rack shape; the other end of the transverse bearing inner ring protrudes in a gear shape and is meshed with the rack at the upper end of the vertical shaft;

the first branch and the second branch are respectively provided with a through hole, the plug is simultaneously connected in the two through holes, and a nut is arranged at the lowest part of the plug; the top surface of the shell is provided with a transverse groove, and the upper half part of the outer ring of the adjusting gear is exposed out of the transverse groove.

Specifically, the casing is cuboid shape, the chalk is placed the mouth and is circular opening.

Specifically, the shell is made of hard plastic.

Specifically, the pen clip, the control clamp, the adjusting gear, the rotating shaft, the transverse bearing, the plug, the screw cap and the vertical shaft are all made of stainless steel materials.

Specifically, the inside of shell still sets up slewing mechanism, slewing mechanism includes: the plug, the nut, the bearing and the rotating shaft; holes are reserved at the fixing positions of the tail ends of the first branch and the second branch, and the holes are fixed through a plug and a screw cap at the bottom of the plug; the tail end of the bearing is fixed with the top end of the plug through a spot welding technology, the upper end of the bearing is connected with a rotating shaft, and the rotating shaft is connected with the adjusting gear through a spiral buckle; the upper half part of the adjusting gear is exposed out of the shell.

The utility model has the advantages that:

the chalk holder provided by the utility model can firmly clamp chalks with different shapes and regulations through the pen clip which can be freely controlled and flexibly opened and closed, and the adjusting gear is arranged to control the opening and closing degree of the inner pen clip, so that the application range and the use efficiency of the chalk holder can be ensured to the maximum extent; the hidden telescopic pointer is arranged at the rear end of the shell, when the pointer is not used, the pointer is integrally compressed in the pen holder, only a small part of the top end is reserved, the pointer can be carried and used conveniently through the telescopic design of the pointer, when the pointer is needed to be used, the exposed part can be pinched and pulled out, the originally compressed pointer can be unfolded one by one, and different lengths can be unfolded according to different requirements; after the use, the pointer is pushed back into the pen holder to restore the original integral shape of the pen holder; by integrating the chalk holder and the telescopic pointer, the functions can be diversified and resources can be saved.

The utility model relates to a chalk holder with scalable teacher's pointer, the circular chalk of anterior segment is placed the mouth and is convenient for put into the chalk, and the whole body of cuboid is effectively exerting oneself and is put steadily when putting when being convenient for use.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a perspective external view of a chalk holder provided in embodiment 1 of the present invention, and a thick dotted line is a vertical cut-open angle;

FIG. 2 is a cross-sectional view of a chalk holder taken along a thick dotted line and vertically cut away according to embodiment 1 of the present invention;

fig. 3 is a schematic view of a state of a pointer of the chalk holder according to embodiment 1 of the present invention when the pointer is unfolded, and a piece of chalk is attached to the left end;

fig. 4 is a schematic structural diagram of a pointer of a chalk holder provided in embodiment 1 of the present invention;

fig. 5 is an exploded view of a rotating mechanism of a chalk holder provided in embodiment 2 of the present invention;

in the figure: 1-chalk placing opening, 2-adjusting gear, 3-pointer, 4-rotating shaft, 5-transverse bearing, 6-plug, 7-control clamp, 71-first branch, 72-second branch, 8-nut, 9-pen clip, 10-shell, 11-vertical shaft and 12-bolt bearing.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

The following detailed description is exemplary in nature and is intended to provide further details of the invention. Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention.

Example 1

The embodiment provides a chalk holder with a telescopic pointer, wherein the front end is a chalk placing opening 1, and the rear end is a telescopic pointer 3; the chalk placing opening 1 is internally provided with a flexibly openable and closable chalk clamp 9, and the opening and closing degree is controlled by a chalk clamping mechanism and a rotating mechanism; the pointer 3 is designed in a nesting mode, so that the pointer 3 can stretch in a nodal mode.

Material design: the casing 10 of the chalk holder with the telescopic pointer is integrally made of hard plastics, so that the practical use requirements of lightness, smallness and moderate wear resistance can be met; the inner openable pen clip 9, the chalk clamping mechanism and the rotating mechanism are all made of stainless steel materials, so that the requirements for operation and fixation can be met, and the total weight of the device cannot be greatly influenced.

As shown in fig. 1, 2 and 4, the structure of the chalk holder in this embodiment includes a housing 10, one end of the housing 10 is provided with a chalk placing port 1, and the other end is fixed with a pointer 3; the pointer 3 has a telescopic function, a pointer is stamped and cut into a plurality of sections with gradually reduced lengths and diameters by turning over a die, and the sections are nested together to form the pointer 3; two adjacent minor matters of the pointer 3 are nested together, and the tail of the minor matter with a smaller diameter is provided with a baffle, so that the minor matters can not slide out when the pointer 3 is pulled open, and the contact surface between the two minor matters can be made into a rough surface to increase friction.

The inside of shell 10 sets up chalk fixture, chalk fixture is located one side that the mouth 1 was placed to the chalk, chalk fixture includes: the control clamp 7 comprises a first branch 71 and a second branch 72, the tail ends of the first branch 71 and the second branch 72 are fixed together, the front ends of the first branch 71 and the second branch 72 form an opening, and a pen clip 9 is respectively fixed at the front end openings of the first branch 71 and the second branch 72; the first branch 71 is fixedly connected with the top of the housing 10, and the first branch 71 and the second branch 72 are elastic pieces which can be opened and closed under external pressure to clamp chalk.

A rotating mechanism is further arranged inside the shell 10; the rotating mechanism includes: the adjusting gear 2, the rotating shaft 4, the transverse bearing 5, the plug 6 and the vertical shaft 11; the outer ring of the transverse bearing 5 is fixed on the top in the shell 10 through a connecting piece; one end of the rotating shaft 4 is fixedly connected with the inner ring of the adjusting gear 2, and the other end of the rotating shaft is connected with one end of the inner ring of the transverse bearing 5 through a spot welding technology; the tail end of the vertical shaft 11 is fixedly connected with the top of the plug 6 through a spot welding technology, and the upper end of the vertical shaft 11 is rack-shaped; the other end of the inner ring of the transverse bearing 5 protrudes in a gear shape and is meshed with a rack at the upper end of the vertical shaft 11; through holes are respectively formed in the first branch 71 and the second branch 72, the plug 6 is simultaneously connected into the two through holes, and a nut 8 is arranged at the lowest part of the plug 6; a transverse groove is formed in the top surface of the housing 10, and the upper half part of the outer ring of the adjusting gear 2 is exposed out of the transverse groove.

The casing 10 is cuboid-shaped, and the chalk placing opening 1 is a circular opening. The housing 10 is made of hard plastic. The pen clip 9, the control clamp 7, the adjusting gear 2, the rotating shaft 4, the transverse bearing 5, the plug 6, the screw cap 8 and the vertical shaft 11 are all made of stainless steel materials.

Size design: in the embodiment, according to the specification and the size of the chalk and the telescopic pointer which pass in the market, the length of the chalk placing opening 1 in the front end is designed to be 9cm, the maximum opening and closing diameter of the pen clip 9 is designed to be 1.2cm, and the minimum opening and closing diameter of the pen clip 9 is designed to be 0.4cm, so that the chalk clamp can adapt to the specification and the size of most of chalks; in the embodiment, the pointer 3 at the rear end is designed to be six-stage telescopic, the length after complete compression is 6cm, the length after complete expansion is 24cm, and the using function of the pointer 3 can be realized.

Fig. 1 is a front perspective view of the pen holder of the present embodiment in a normal state and with the pointer 3 in a compressed state. The front end of the pen holder is a chalk placing opening 1 which is round, so that chalk can be conveniently placed in the pen holder; the upper part of the front end of the shell 10 is provided with an exposed adjusting gear 2 which is used for controlling the opening and closing degree of a pen clip 9 in the pen holder; the final section is the compressed pointer 3, which is designed such that the stack protrudes from the pen holder, in order to facilitate the extension by pinching the tip with the fingers.

Fig. 2 is a cross-sectional view of the pen holder of the present embodiment taken from right above at a vertical angle in the normal state of fig. 1, and is also a schematic diagram of the internal structure of the pen holder of the present embodiment. The upper part of the front end of the shell 10 of the pen holder of the embodiment is provided with an adjusting gear 2 for controlling the opening and closing degree of the pen clip, the upper half part of the adjusting gear is exposed outside the shell 10, and the other part of the adjusting gear is arranged inside the shell 10 and is connected with an internal rotating shaft 4; the rotating shaft 4 is connected with a transverse bearing 5, and the lowest end of the transverse bearing 5 is connected with a plug 6 below. When the adjusting gear 2 is stirred, the plug 6 is driven to move up and down through the rotating shaft 4 and the transverse bearing 5 which are connected, so that the control clamp 7 can realize the change of the opening degree by utilizing the elasticity of the control clamp 7 with the help of the external pressure, and the front-end pen clip 9 can be driven to flexibly open and close. In order to ensure the stability of the pen clip 9 in opening and closing, the screw cap 8 is arranged at the lowest part of the plug 6 and used for limiting the vertical moving range of the plug 6, so that the opening and closing degree of the clamp is effectively and stably controlled, and the stability of the pen clip is realized.

Fig. 3 is a schematic diagram of the pen holder of the present embodiment in a fully unfolded state, and the pointer 3 in the last section is fully unfolded. In order to clearly show the actual state of the pen holder in the embodiment in normal operation, a segment of chalk is attached to the front section of the pen holder in the figure.

Example 2

In the embodiment, the front end of the chalk holder is a chalk placing opening 1, and the rear end of the chalk holder is a telescopic pointer 3; the interior of the chalk placing opening 1 is a flexibly openable and closable pen clip 9, and opening and closing degree control is carried out by utilizing an internal bolt bearing 12 and an external adjusting gear connector; the pointer part enables the pointer 3 to realize nodal extension and retraction through a nested design.

As shown in fig. 5, the chalk holder provided in this embodiment is different from that of embodiment 1 in the structure of the rotating device, and is divided into a front part and a rear part, an upper and a lower pen clips 9 are arranged inside a casing 10 at the front end, the rear end of the pen clips 9 is a control clamp 7, and the pen clips 9 and the control clamp 7 are made of stainless steel material by integral stamping and over-molding; holes are reserved at the fixing positions of the tail ends of the first branch 71 and the second branch 72, and the holes are fixed through a plug 6 and a screw cap 8 at the bottom of the plug 6; the top of the plug 6 is a rotating device which is made of stainless steel materials through integral reverse molding and comprises a bearing 12 and a rotating shaft 4; the tail end of the bearing 12 is fixed with the top end of the plug 6 through a spot welding technology, the rotating shaft 4 is connected with the adjusting gear 2 through a spiral buckle, and the upper end of the bearing 12 is connected with the rotating shaft 4; the upper half part of the adjusting gear 2 is exposed out of the shell 10, and a user can rotate the adjusting gear 2 according to the length and shape of the chalk to drive an internal rotating device to control the plug 6 to move up and down, so that the tightness opening and closing of the control clamp 7 and the pen clip 9 thereof are realized; the upper and lower two pen clips 9 jointly form a flexible chalk placing groove, so that chalks with different lengths and different regular shapes can be stably placed and fixed, and dust pollution and chalk segment breakage caused by direct manual contact of a user with the chalk in a traditional state are avoided. The telescopic pointer 3 at the rear end adopts a nested design, one pointer is die-stamped and divided into a plurality of sections with gradually reduced length and diameter, when the telescopic pointer is used, the top end of the pointer 3 can be pinched by fingers and pulled outwards, and the pointer can be unfolded section by section to form a complete pointer; the pointer 3 can be compressed at ordinary times to form a part of the chalk holder, and inconvenience that a user carries the pointer too long in a traditional state is avoided.

It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of the invention or which are equivalent to the scope of the invention are embraced by the invention.

Claims (7)

1. A chalk holder with a telescopic pointer is characterized by comprising a shell (10), wherein one end of the shell (10) is provided with a chalk placing opening (1), and the other end of the shell is fixed with a pointer (3);

the pointer (3) has a telescopic function, one pointer is die-stamped and divided into a plurality of sections with gradually reduced lengths and diameters, and the sections are nested together to form the pointer (3);

the inside of shell (10) sets up chalk fixture, chalk fixture is located the chalk and places one side of mouthful (1), chalk fixture includes: the control clamp (7) comprises a first branch (71) and a second branch (72), the tail ends of the first branch (71) and the second branch (72) are fixed together, the front ends of the first branch (71) and the second branch (72) form an opening, and a pen clip (9) is respectively fixed at the front end openings of the first branch (71) and the second branch (72); the first branch (71) is fixedly connected with the top of the shell (10), and the first branch (71) and the second branch (72) are both elastic pieces.

2. A chalk holder with telescopic pointer according to claim 1 characterized in that two adjacent sections of the pointer (3) are nested together, the tail of the smaller diameter section is provided with a stop piece.

3. A chalk holder with retractable pointer, according to claim 1, characterized in that the inside of said casing (10) is further provided with a rotating mechanism; the rotating mechanism includes: the device comprises an adjusting gear (2), a rotating shaft (4), a transverse bearing (5), a plug (6) and a vertical shaft (11); the outer ring of the transverse bearing (5) is fixed at the top of the shell (10) through a connecting piece;

one end of the rotating shaft (4) is fixedly connected with the inner ring of the adjusting gear (2), and the other end of the rotating shaft is fixedly connected with one end of the inner ring of the transverse bearing (5); the tail end of the vertical shaft (11) is fixedly connected with the top of the plug (6), and the upper end of the vertical shaft (11) is rack-shaped; the other end of the inner ring of the transverse bearing (5) protrudes in a gear shape and is meshed with a rack at the upper end of the vertical shaft (11);

through holes are respectively formed in the first branch (71) and the second branch (72), the plug (6) is connected into the two through holes at the same time, and a nut (8) is installed at the lowest part of the plug (6); the top surface of the shell (10) is provided with a transverse groove, and the upper half part of the outer ring of the adjusting gear (2) is exposed out of the transverse groove.

4. The chalk holder with retractable pointer as described in claim 1, wherein said housing (10) is in the shape of a rectangular parallelepiped and said chalk placing opening (1) is a circular opening.

5. A chalk holder with retractable pointer in accordance with claim 1 characterized by that the housing (10) is made of hard plastic.

6. The chalk holder with the retractable pointer as described in claim 1, wherein the pen clip (9), the control clamp (7), the adjusting gear (2), the rotating shaft (4), the transverse bearing (5), the plug (6), the nut (8) and the vertical shaft (11) are all made of stainless steel.

7. A chalk holder with retractable pointer, according to claim 1, characterized in that inside said casing (10) is further provided a rotation mechanism, said rotation mechanism comprising: a plug (6), a nut (8), a bolt bearing (12) and a rotating shaft (4);

holes are reserved at the fixing positions of the tail ends of the first branch (71) and the second branch (72), and the fixing positions are fixed through a plug (6) and a screw cap (8) at the bottom of the plug (6); the tail end of the bolt bearing (12) is fixed with the top end of the plug (6) through a spot welding technology, the upper end of the bolt bearing (12) is connected with the rotating shaft (4), and the rotating shaft (4) is connected with the adjusting gear (2) through a spiral ring buckle; the upper half part of the adjusting gear (2) is exposed out of the shell (10).

Images