CN209775942U

CN209775942U - chalk sleeve with erasing function

Info

Publication number: CN209775942U
Application number: CN201920388578.7U
Authority: CN
Inventors: 谢知言
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-03-26
Filing date: 2019-03-26
Publication date: 2019-12-13
Anticipated expiration: 2029-03-26

Abstract

The utility model discloses a chalk cover of function specifically erases, the power distribution box comprises a box body, first through-hole has been seted up to box one side lateral wall, it is connected with the driven shaft to rotate between the both sides lateral wall of box, the equal sliding connection of both sides inner wall of box has the slide that the symmetry set up, the screw hole that runs through around seting up on the slide, the screw hole is passed to the one end of driven shaft, and the lateral wall of driven shaft sets up screw thread, screw drive is connected between driven shaft and the slide, be fixed with the cover body between the slide, the recess that the symmetry set up is seted up to the inside wall of the cover body, one side lateral wall of recess is fixed with first reset spring, first reset spring's the other end extends to the clamp plate that the recess. The utility model discloses can carry out the centre gripping to the chalk and fix, improve fixed stability, can adjust the chalk according to the demand and put into length, can adjust the use length that the chalk stretches out according to the demand moreover, improve the practicality.

Description

Chalk sleeve with erasing function

Technical Field

The utility model relates to a chalk cover technical field especially relates to a chalk cover of specifically erasing function.

Background

The existing chalk sleeve does not have the erasing function, the existing chalk sleeve is fixed with the chalk by utilizing self friction force in the chalk using process, the chalk needs to be pulled outwards after being used a little at each time, and therefore the chalk sleeve with the erasing function is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a chalk sleeve with a specific erasing function.

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

A chalk sleeve with a specific erasing function comprises a box body, wherein a first through hole is formed in the side wall of one side of the box body, a driven shaft is rotatably connected between the side walls of the two sides of the box body, sliding plates which are symmetrically arranged are connected to the inner walls of the two sides of the box body in a sliding manner, threaded holes which penetrate through the sliding plates in the front and back directions are formed in the sliding plates, one end of the driven shaft penetrates through the threaded holes, threads are formed in the outer side wall of the driven shaft, the driven shaft is in threaded transmission connection with the sliding plates, a sleeve body is fixed between the sliding plates, symmetrically arranged grooves are formed in the inner side wall of the sleeve body, a first reset spring is fixed to the side wall of one side of each groove, an arc-shaped pressing plate is fixed to the outer portion of each groove, guide grooves which are symmetrically arranged are formed in the inner walls, and the guide rod and the pressing plate are vertically arranged, a second through hole is formed in the outer wall of one side of the box body, the erasing brush is fixed on the side wall of one side of the box body, and the push rod is fixed on the side wall of one side of the pressing plate.

Preferably, the inside of second through-hole rotates and is connected with the driving shaft, and the one end of driving shaft extends to the inside first bevel gear that is fixed with of box, the lateral wall tight fit of driven shaft has cup jointed second bevel gear, and meshes the transmission connection between first bevel gear and the second bevel gear.

Preferably, one end of the driving shaft, which is far away from the first bevel gear, extends to the outside of the second through hole, and a rotating plate is fixed on the outside of the second through hole and is vertically arranged between the rotating plate and the driving shaft.

Preferably, the rotating plate is provided with a third through hole penetrating left and right, and a fixing rod is slidably sleeved in the third through hole.

preferably, one end of the fixed rod extends to the outside of the third through hole and is fixed with a pulling plate together, and a second return spring is fixed between the pulling plate and the rotating plate.

Preferably, the outer side wall of the box body is provided with a slot along the circumferential direction, and the fixing rod is clamped with the slot.

The utility model has the advantages that:

1: through the matching among the sleeve body, the groove, the first reset spring, the pressing plate and the guide rod, the chalk can be clamped and fixed, the fixing stability is improved, and the chalk placing length can be adjusted according to requirements;

2: the use length of the chalk extending out can be adjusted according to requirements through the matching of the first bevel gear, the second bevel gear, the driving shaft, the driven shaft, the sliding plate and the rotating plate, and the practicability is improved;

The utility model discloses can carry out the centre gripping to the chalk and fix, improve fixed stability, can adjust the chalk according to the demand and put into length, can adjust the use length that the chalk stretches out according to the demand moreover, improve the practicality.

Drawings

Fig. 1 is a schematic structural view of a chalk sleeve with a specific erasing function provided by the present invention;

Fig. 2 is an enlarged schematic structural view of a portion a of a chalk sleeve with a specific erasing function according to the present invention;

Fig. 3 is an enlarged schematic structural diagram of a part B of a chalk sleeve with a specific erasing function according to the present invention.

In the figure: the device comprises a box body 1, a sliding plate 2, a driven shaft 3, a driving shaft 4, a first bevel gear 5, a second bevel gear 6, a rotating plate 7, a fixed rod 8, a pulling plate 9, a second return spring 10, a sleeve body 11, an erasing brush 12, a groove 13, a first return spring 14, a pressing plate 15, a guide rod 16 and a push rod 17.

Detailed Description

the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

referring to fig. 1-3, a chalk sleeve with a specific erasing function comprises a box body 1, and is characterized in that a first through hole is formed in a side wall of one side of the box body 1, a driven shaft 3 is rotatably connected between the side walls of the two sides of the box body 1, sliding plates 2 which are symmetrically arranged are slidably connected to inner walls of the two sides of the box body 1, threaded holes which are penetrated through the sliding plates 2 in the front and back directions are formed in the sliding plates 2, one end of the driven shaft 3 penetrates through the threaded holes, the outer side wall of the driven shaft 3 is provided with threads, the driven shaft 3 is in threaded transmission connection with the sliding plates 2, a sleeve body 11 is fixed between the sliding plates 2, symmetrically arranged grooves 13 are formed in the inner side wall of the sleeve body 11, a first reset spring 14 is fixed to a side wall of one side of each groove 13, the other end of the first reset spring 14, the inside sliding sleeve of guide way is equipped with guide bar 16, and the one end of guide bar 16 extends to the cover body 11 inside and the clamp plate 15 lateral wall is fixed, and sets up perpendicularly between guide bar 16 and the clamp plate 15, the second through-hole has been seted up to one side outer wall of box 1, one side lateral wall of box 1 is fixed with erases brush 12, one side lateral wall of clamp plate 15 is fixed with push rod 17.

A driving shaft 4 is rotatably connected inside the second through hole, one end of the driving shaft 4 extends into the box body 1 and is fixed with a first bevel gear 5, the outer side wall of the driven shaft 3 is sleeved with a second bevel gear 6 in a tight fit manner, and the first bevel gear 5 is in meshing transmission connection with the second bevel gear 6, one end of the driving shaft 4 far away from the first bevel gear 5 extends to the outside of the second through hole and is fixed with a rotating plate 7, the rotating plate 7 is vertically arranged with the driving shaft 4, a third through hole which is penetrated left and right is arranged on the rotating plate 7, a fixed rod 8 is slidably sleeved in the third through hole, one end of the fixed rod 8 extends to the outside of the third through hole and is jointly fixed with a pulling plate 9, a second return spring 10 is fixed between the pulling plate 9 and the rotating plate 7, the outer side wall of the box body 1 is provided with a slot along the circumferential direction, and the fixing rod 8 is clamped with the slot.

The working principle is as follows: when chalk is fixed, the chalk is placed in the sleeve body 11, the chalk presses the arc-shaped surface of the pressing plate 15, the pressing plate 15 presses the first return spring 14, the pressing plate 15 fixes the chalk under the elastic force of the first return spring 14, so that the position of the chalk is fixed, then the box body 1 is held for writing, after the chalk exposed outside is written, the pulling plate 9 is pulled, the pulling plate 9 drives the fixing rod 8 to separate the fixing rod 8 from the slot, then the rotating plate 7 is rotated, the rotating plate 7 drives the driving shaft 4, the driving shaft 4 drives the first bevel gear 5 to rotate, the first bevel gear 5 is in meshing transmission connection with the second bevel gear 6 to drive the driven shaft 3 to rotate, the driven shaft 3 drives the sliding plate 2 to move through thread transmission, the sliding plate 2 drives the sleeve body 11 to move outwards, the pressing plate 15 is driven to move by pushing the pushing rod 17, remove the chalk, adjust the extension length of chalk, through the brush 12 that erases that sets up, have the function of erasing, this design is simple swift, can carry out the centre gripping to the chalk fixed, has improved fixed stability, can adjust the chalk according to the demand and put into length, can adjust the use length that the chalk stretches out according to the demand moreover, has improved the practicality.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A chalk sleeve with a specific erasing function comprises a box body and is characterized in that a first through hole is formed in one side wall of the box body, a driven shaft is rotatably connected between the two side walls of the box body, symmetrically arranged sliding plates are slidably connected to the inner walls of the two sides of the box body, threaded holes which penetrate through the sliding plates in the front and back directions are formed in the sliding plates, one end of the driven shaft penetrates through the threaded hole, threads are formed in the outer side wall of the driven shaft, the driven shaft is in threaded transmission connection with the sliding plates, a sleeve body is fixed between the sliding plates, symmetrically arranged grooves are formed in the inner side wall of the sleeve body, a first reset spring is fixed to one side wall of each groove, the other end of the first reset spring extends to the outside of each groove and is fixed with a pressing plate of an arc structure, symmetrically arranged guide grooves are formed in the inner walls of the two sides of the, and the guide rod and the pressing plate are vertically arranged, a second through hole is formed in the outer wall of one side of the box body, the erasing brush is fixed on the side wall of one side of the box body, and the push rod is fixed on the side wall of one side of the pressing plate.

2. The chalk sleeve with the specific erasing function as claimed in claim 1, wherein the second through hole is rotatably connected with a driving shaft, one end of the driving shaft extends into the box body and is fixed with a first bevel gear, a second bevel gear is sleeved on the outer side wall of the driven shaft in a tight fit manner, and the first bevel gear and the second bevel gear are in meshing transmission connection.

3. the chalk sleeve with the special erasing function as claimed in claim 2, wherein the end of the driving shaft far away from the first bevel gear extends to the outside of the second through hole and is fixed with a rotating plate, and the rotating plate and the driving shaft are vertically arranged.

4. The chalk sleeve with specific erasing function as claimed in claim 3, wherein the rotating plate is provided with a third through hole penetrating left and right, and a fixing rod is slidably sleeved in the third through hole.

5. The chalk sleeve with specific erasing function as claimed in claim 4, wherein a pulling plate is fixed to the end of the fixing rod extending to the outside of the third through hole, and a second return spring is fixed between the pulling plate and the rotating plate.

6. The chalk sleeve with the erasing function as claimed in claim 1, wherein the outer sidewall of the box body is provided with a slot along a circumferential direction, and the fixing rod is clamped with the slot.