CN220639346U

CN220639346U - Chalk holder

Info

Publication number: CN220639346U
Application number: CN202321053661.1U
Authority: CN
Inventors: 马力
Original assignee: Yuncheng Senior Technical School
Current assignee: Yuncheng Senior Technical School
Priority date: 2023-05-05
Filing date: 2023-05-05
Publication date: 2024-03-22
Anticipated expiration: 2033-05-05

Abstract

The utility model discloses a chalk holder, which relates to the technical field of chalk holders and comprises a sleeve, wherein a holding cylinder is inserted into the sleeve, a chalk body is held in the holding cylinder, a connecting ring is connected to the lower side of the sleeve, connecting grooves are symmetrically formed in the connecting ring, cutters are arranged in the connecting grooves, connecting rods are vertically connected to the lower side of the cutters, and an opening matched with the connecting rods is formed in the connecting ring. According to the chalk body, the connecting ring and the cutters are arranged, so that the two groups of cutters are close to each other, the pen point part of the chalk body can be cut, the cut chalk is prevented from being broken greatly while labor is saved, and accordingly waste of resources is reduced.

Description

Chalk holder

Technical Field

The utility model relates to the technical field of chalk holders, in particular to a chalk holder.

Background

The chalk is a widely used tool in daily life, is generally used for writing on a blackboard, and a teacher in the profession such as history needs to use the chalk to write on the blackboard and draw and explain courses and problems in class, so that the chalk holder is widely popularized to prevent the teacher from sticking more chalk powder on the hands, and the hands of the teacher can be prevented from being directly contacted with the chalk in writing through the arrangement of the chalk holder.

At present, the existing chalk holder can only hold the chalk when in use, and in the process of actually using the chalk, as the chalk is formed by precipitating calcium carbonate in the production process, the chalk head of the existing chalk holder has a lot of impurities, so that the chalk is not smooth in writing, and a teacher can break off a part of the chalk head part of the chalk before putting the chalk into the chalk holder, so that the chalk is laborious and the broken chalk is too much, thereby causing the waste of the chalk.

Disclosure of Invention

The utility model aims to solve the defects in the prior art and provides a chalk holder.

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

the utility model provides a chalk holder, includes the sleeve, telescopic inside is inserted and is equipped with the centre gripping section of thick bamboo, and the inside centre gripping of centre gripping section of thick bamboo has the chalk body, telescopic downside is connected with the go-between, and the inside symmetry of go-between has seted up the spread groove, the cutter is all installed to the inside of spread groove, and the downside of cutter is vertical to be connected with the connecting rod, the opening with connecting rod looks adaptation has been seted up to the inside of go-between.

Preferably, the upper side fixedly connected with sliding block of cutter, the spout with sliding block looks adaptation is seted up to the inside of go-between.

Preferably, a connecting spring is fixedly connected to one side, away from each other, of the cutter, and the other end of the connecting spring is fixedly connected with the inner wall of the connecting groove.

Preferably, the upper side of the connecting ring is fixedly connected with a protective cover, and the protective cover is of a funnel-shaped structure.

Preferably, the upside fixedly connected with docking collar of go-between, and the internal thread has been seted up to the inner wall of docking collar, the external screw thread with docking collar looks adaptation has been seted up to telescopic outer wall, the upside of docking collar is provided with the spacing ring, and the fixed cup joint in telescopic outside of spacing ring.

Preferably, the outside fixedly connected with connecting block of docking ring, and the connecting block is annular array structure and distributes in the upside of docking ring.

Preferably, the outer side of the protective cover is fixedly connected with a fixing ring, and soft cloth is sewed on the outer side of the fixing ring.

Compared with the prior art, the utility model has the beneficial effects that:

1. the device is provided with go-between and cutter, after putting into the sleeve with the chalk body, the staff can manually pull two sets of connecting rods to make two sets of cutters be close to each other, can cut the nib position of chalk body, when comparatively laborsaving, can prevent that the chalk of cutting from breaking great, thereby reduced the waste of resource.

2. The device is provided with protection casing and docking ring, in the use, through the setting of protection casing, can realize the protection once more to mr's hand to prevent to write the chalk dust that the in-process produced and drop to mr's hand, thereby realize the protection effect to mr's hand.

Drawings

Fig. 1 is a schematic perspective view of a chalk holder according to the utility model;

FIG. 2 is a schematic perspective cross-sectional view of the structure of FIG. 1;

fig. 3 is a schematic perspective sectional view of the chalk body and the holding cylinder in fig. 1;

FIG. 4 is a schematic perspective cross-sectional view of the docking collar and shield configuration of FIG. 1;

fig. 5 is an enlarged partial schematic view of fig. 4 a.

In the figure: 1. a sleeve; 2. a chalk body; 3. a connecting ring; 4. a connecting groove; 5. a cutter; 6. a connecting rod; 7. a sliding block; 8. a connecting spring; 9. a docking collar; 10. a connecting block; 11. a protective cover; 12. a fixing ring; 13. a clamping cylinder; 14. and a limiting ring.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1-5, a chalk holder, including sleeve 1, sleeve 1's inside has inserted clamping cylinder 13, and clamping cylinder 13's inside centre gripping has chalk body 2, sleeve 1, clamping cylinder 13 are current mature technique, can realize the centre gripping fixed to chalk body 2, can make staff's hand not contact with the chalk when writing, sleeve 1's downside is connected with go-between 3, and go-between 3's inside symmetry has been seted up spread groove 4, cutter 5 is all installed to the inside of spread groove 4, and the vertical connecting rod 6 that is connected with of downside of cutter 5, the opening with connecting rod 6 looks adaptation has been seted up to go-between 3's inside.

Further, referring to fig. 5, it can be known that the upper side of the cutter 5 is fixedly connected with a sliding block 7, a sliding groove matched with the sliding block 7 is formed in the connecting ring 3, and when the cutter is used, the cutter 5 can be guided through the mutual matching of the sliding block 7 and the sliding groove, so that the flatness of a cut is ensured, and the cutter is convenient for a worker to write subsequently.

Further, referring to fig. 4 and 5, it can be known that a connecting spring 8 is fixedly connected to one side of the cutter 5 away from each other, and the other end of the connecting spring 8 is fixedly connected with the inner wall of the connecting groove 4, after the pen point of the chalk body 2 is cut off, a worker can stop pulling the connecting rod 6, at this time, the cutter 5 can reset through the elastic force of the connecting spring 8, and the worker does not need to manually pull the connecting rod 6 again, so that convenience in the use process of the device is improved.

Further, referring to fig. 1, 2 and 3, it can be known that the upper side of the connecting ring 3 is fixedly connected with a protective cover 11, and the protective cover 11 has a funnel-shaped structure, and when in use, the blocking of chalk dust can be realized through the protective cover 11 arranged in the funnel-shaped structure, so as to realize further protection of hands of a teacher.

Further, referring to fig. 4, it can be known that the upper side of the connecting ring 3 is fixedly connected with the docking ring 9, the inner wall of the docking ring 9 is provided with an internal thread, the outer wall of the sleeve 1 is provided with an external thread matched with the docking ring 9, the upper side of the docking ring 9 is provided with a limiting ring 14, the limiting ring 14 is fixedly sleeved on the outer side of the sleeve 1, the internal thread and the external thread are not shown in the figure, and the dismounting and the mounting of the protective cover 11 can be realized through the threaded fit of the docking ring 9 and the sleeve 1, so that the repeated use of the cutter 5 is facilitated, and the limiting work of the docking ring 9 can be realized through the setting of the limiting ring 14.

Further, referring to fig. 3, it can be known that the connection blocks 10 are fixedly connected to the outer side of the docking ring 9, and the connection blocks 10 are distributed on the upper side of the docking ring 9 in a ring array structure, and by means of the arrangement of the plurality of groups of connection blocks 10, it is convenient for a worker to rotate the docking ring 9 out of the bottom end of the sleeve 1.

Further, referring to fig. 3 and 4, it can be known that the outer side of the protection cover 11 is fixedly connected with a fixing ring 12, and soft cloth is sewn on the outer side of the fixing ring 12, and the soft cloth is made of similar materials to a chalk eraser in the prior art, and the wiping of the wrong character can be realized through the arrangement of the fixing ring 12.

Working principle: when the chalk is used, a worker can firstly press the top end of the clamping cylinder 13 so that the lower side of the clamping cylinder 13 can extend out of the interior of the sleeve 1, at the moment, the worker can insert the chalk body 2 from the opening of the connecting ring 3 and reserve proper pen point length, when the chalk body 2 is a chalk for the first use, the worker can manually pull the connecting rod 6 so as to drive the two groups of cutters 5 to move simultaneously, so that the cutting of the chalk body 2 can be realized, and then the worker can stop pulling the connecting rod 6, at the moment, the cutters 5 can reset through the elasticity of the connecting spring 8, and then the worker can press the upper side of the clamping cylinder 13 again, so that the chalk body 2 can be pulled out of the clamping cylinder 13 to facilitate the writing of the worker, the blocking of chalk dust can be realized through the arrangement of the protective cover 11, the protection of a teacher's hand can be realized, and when the chalk body 2 is a wrong character is used for the first time, the worker can be used for wiping the wrong character through the fixing ring 12 connected to the outer side of the protective cover 11, so that the worker can effectively promote the convenience of the teacher in the use.

In the utility model, the installation mode, the connection mode or the setting mode of all the components are common mechanical modes, and the specific structure, the model and the coefficient index of all the components are self-contained technologies, so long as the beneficial effects can be achieved, the implementation can be carried out, and redundant description is omitted.

The above examples are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principle of the present utility model should be made in the equivalent manner, and the embodiments are included in the protection scope of the present utility model.

In the present utility model, unless otherwise indicated, the terms "about" and "front and back," inner and outer, and vertical levels, "etc., used herein are merely intended to refer to the orientation of the term in conventional use, or are colloquially known to those skilled in the art, and should not be construed as limiting the term, while the terms" first, "second," and "third," etc., do not denote a particular number or order, but are merely intended to be used in distinguishing between the terms, and the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements, but also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Claims

1. The utility model provides a chalk holder, includes sleeve (1), its characterized in that, the inside of sleeve (1) is inserted and is equipped with clamping cylinder (13), and the inside of clamping cylinder (13) is pressed from both sides and is held chalk body (2), the downside of sleeve (1) is connected with go-between (3), and go-between (4) have been seted up to the inside symmetry of go-between (3), cutter (5) are all installed to the inside of go-between (4), and the downside vertical connection of cutter (5) has connecting rod (6), the opening with connecting rod (6) looks adaptation has been seted up to the inside of go-between (3).

2. The chalk holder as claimed in claim 1, characterized in that the upper side of the cutter (5) is fixedly connected with a sliding block (7), and a sliding groove matched with the sliding block (7) is formed in the connecting ring (3).

3. A chalk holder as claimed in claim 1, characterized in that the side of the cutting knife (5) which is far away from each other is fixedly connected with a connecting spring (8), and the other end of the connecting spring (8) is fixedly connected with the inner wall of the connecting groove (4).

4. A chalk holder as claimed in claim 1, characterized in that the upper side of the connecting ring (3) is fixedly connected with a protective cover (11), and the protective cover (11) has a funnel-shaped structure.

5. The chalk holder according to claim 1, characterized in that the upper side of the connecting ring (3) is fixedly connected with a butt joint ring (9), the inner wall of the butt joint ring (9) is provided with an inner thread, the outer wall of the sleeve (1) is provided with an outer thread matched with the butt joint ring (9), the upper side of the butt joint ring (9) is provided with a limiting ring (14), and the limiting ring (14) is fixedly sleeved on the outer side of the sleeve (1).

6. The chalk holder as claimed in claim 5, characterized in that the outer side of the docking ring (9) is fixedly connected with a connecting block (10), and the connecting block (10) is distributed on the upper side of the docking ring (9) in a ring-shaped array structure.

7. A chalk holder as claimed in claim 4, characterized in that the outer side of the protective cover (11) is fixedly connected with a fixing ring (12), and the outer side of the fixing ring (12) is sewed with soft cloth.