CN203913768U - A kind of chalk holder - Google Patents

Abstract

The utility model provides a kind of chalk holder, this chalk holder is by magnetic pole two like magnetic poles repel each other, the principle that there is a natural attraction between the sexes, be aided with a series of mechanical devices, comprise a rotatable disk body, a base plate and an axle, disk body is fixed on base plate by axle, and disk body is comprised of box body, lower cylinder, disk, upper cylinder, chalk push jack, push jack driving mechanism, handle and chalk fixed head.Connection and cooperation by said mechanism realize chalk storage, color selection, automatic spring, length screening and the functions such as chalk recovery of giving up, and it is simple in structure, with low cost, easy to operate, good looking appearance, rationally environmental protection.

Description

A kind of chalk holder

Technical field

The utility model relates to teaching aid technical field, in particular to a kind of chalk holder.

Background technology

In prior art, what generally use is papery chalk holder, its major defect is: cracky, with useless chalk, cannot determine whether throw away by a unified dimension control, thereby some chalk also can be used but and be thrown away and cause waste, outward appearance is simple and crude, and user can at will throw away no chalk end, makes lectern and blackboard slot not only dirty but also random.

Have, existing chalk holder, is mainly that to hold be main purpose, there is no other functions, lacks practicality and novelty, is unsuitable for public demand again.

Utility model content

The utility model object is to provide a kind of chalk holder that can meet the functions such as recovery that integrate chalk storage, color selection, automatic spring, length screening and the chalk that gives up of classroom instruction.

For reaching above-mentioned purpose, the technical scheme that the utility model adopts is as follows:

A chalk holder, is characterized in that, comprises a rotatable disk body, a base plate and an axle, and described disk body is fixed on base plate by described axle;

Described disk body is comprised of box body, lower cylinder, disk, upper cylinder, chalk push jack, push jack driving mechanism, handle and chalk fixed head;

Described axle is multidiameter, and on it, the diameter of part is less than the diameter of lower part, and its underpart tilts to be fixed on base plate, has a predetermined inclination α between described axle and horizontal plane, and the scope of predetermined inclination α is at 45 °～90 °;

The upper part of described axle is set with described box body, lower cylinder, disk, upper cylinder successively, wherein:

Described box body is " 8 " word shape structure, is sleeved on axle and fixing and invariant position, has the first cylindrical groove position and the second cylindrical groove position on this box body, is wherein respectively arranged with magnet;

Described lower cylinder and box body adjacency, it is comprised of a cylindrical body, is formed with N identical not groove and N identical groove composition, the passage that this groove provides useless chalk to discharge on cylindrical body, this is not provided as the lower segment magnet of chalk hairclipper in groove, and N is positive integer and N >=2;

Described disk and lower cylinder adjacency, it is comprised of a disk body, in this disc body, be formed with N the equal portions that cut fan-shaped, and adjacently in disc body form N wide passage between fan-shaped, this passage forms the passage that chalk is vertically placed, the bottom surface of chalk is parallel to the card of disk body and is affixed on passage, the center being positioned in the disc body on N fan-shaped inward flange top is also formed with a central functionality district, in this central functionality district, be formed with the conduit of described not groove adaptation and with the useless chalk conduit of described groove adaptation;

Described upper cylinder and described lower cylinder adjacency, it is comprised of a cylindrical body, on cylindrical body, be formed with chute, N the hole and the limit for height groove that is positioned at cylindrical body lower end position that for chalk, eject that N described lower segment magnet slides, the height of this limit for height groove is less than half of lower cylindrical height;

The number of described chalk fixed head is the twice of the number of described disk upper channel, and the edge of each passage is all fixed two chalk fixed heads formation chalk stationary conduits the chalk of vertically placing is fixed on passage;

Described chalk push jack, push jack driving mechanism are arranged in each chalk stationary conduit, push jack driving mechanism is comprised of a spring and the axis of guide, spring housing be contained on leading axle and its one end against the chalk push jack other end against by handle, one end of leading axle is fixedly connected with chalk push jack, its other end stretch in handle and under the left and right of described spring can be in described handle stretching motion.

Further, in embodiment, described chalk holder also comprises a chalk lid with holes, is arranged on described cylindrical top.

Further, in embodiment, described N is positive integer and N >=2, and N is even number.

Further, in embodiment, described N value is in 5,9,15.

Further, in embodiment, described predetermined inclination α is 50 °

Further, in embodiment, described predetermined inclination α is 60 °

Further, in embodiment, the height of described limit for height groove is 25mm.

Further, in embodiment, the diameter of the lower part of described axle is 35mm, and the diameter of upper part is 25mm.

From above the technical solution of the utility model, the beneficial effects of the utility model are:

1) this chalk holder can eject the chalk of different colours successively, allows the chalk of the color that the selection of user's more convenient and quicker needs;

2) this chalk holder is scientifically made the size of useless chalk, makes a little longer youngster's useless chalk continue to use, and too short unified processing, does not only cause waste, can also keep lectern, blackboard clean and tidy;

3) outward appearance of its steering wheel, the chalk mode that goes out of rotation has also greatly increased the interest in classroom when having facilitated teaching, and has extensive adaptability for classroom instruction;

4) simple in structure, with low cost, easy to operate, environmental friendliness, rationally environmental protection.

Accompanying drawing explanation

Fig. 1 is the exemplary configurations schematic diagram of the utility model one embodiment chalk holder.

Fig. 2 is the schematic diagram of other direction of the chalk holder of Fig. 1 embodiment.

Fig. 3 is the side sectional view of the chalk holder of Fig. 1 embodiment.

Fig. 4 is the structural representation of box body in Fig. 1 embodiment.

Fig. 5 is lower cylindrical structural representation in Fig. 1 embodiment.

Fig. 6 is the structural representation of disk in Fig. 1 embodiment.

Fig. 7 is upper cylindrical structural representation in Fig. 1 embodiment.

Fig. 8 is the installation site schematic diagram of chalk push jack in Fig. 1 embodiment, push jack driving mechanism.

Fig. 9 is the principle schematic that in Fig. 1 embodiment, chalk ejects.

The specific embodiment

In order more to understand technology contents of the present utility model, especially exemplified by specific embodiment and coordinate appended graphic being described as follows.

As shown in Figure 1, Figure 2, Figure 3 shows, according to preferred embodiment of the present utility model, a kind of chalk holder, comprises a rotatable disk body, a base plate 1 and an axle 2, and described disk body is fixed on base plate 1 by described axle 2.Base plate 1 plays fixed support effect.

Described disk body is comprised of box body 3, lower cylinder 4, disk 5, upper cylinder 6, chalk push jack 7, push jack driving mechanism 8, handle 9 and chalk fixed head 10 (as shown in Figure 8).

Preferably, as shown in Figure 1, described chalk holder also comprises a chalk with holes lid 20, be arranged on described disk body top.

As shown in Figure 1, Figure 2, Figure 3 shows, described axle 2 is multidiameter, on it, the diameter of part is less than the diameter of lower part, its underpart tilts to be fixed on base plate 1, between described axle 2 and horizontal plane, there is a predetermined inclination α, the scope of predetermined inclination α is at 45 °～90 °, and the direction that so can make whole chalk eject becomes friendly relation with user, and person easy to use takes.

In certain embodiments, aforementioned predetermined inclination α is 45 °, and in further embodiments, predetermined inclination α is 60 °, 70 °, or 90 ° etc., in the scope of above-mentioned 45 °～90 °, evidence is comparatively desirable and suitable angle in a word.

In the present embodiment, in order to facilitate the installation of disk and base, and retainer shaft has certain rigidity and intensity, the diameter value 35mm of the lower part of axle 2, the diameter value 25mm of upper part.

As shown in 3, the upper part of described axle 2 is set with described box body 3, lower cylinder 4, disk 5 and upper cylinder 6 successively.

As shown in Figure 4, aforementioned box body 3 is " 8 " word shape structure, is sleeved on axle 2 and fixing and invariant position, has the first cylindrical groove position 17 and the second cylindrical groove position 18 on this box body 3, is wherein respectively arranged with magnet 11 (as shown in Figure 9).

As shown in Figure 5 in conjunction with Fig. 1, Fig. 2 and Fig. 3, described lower cylinder 4 and box body 3 adjacency, it is comprised of a cylindrical body, on cylindrical body, be formed with N identical not groove 4-1 and N identical groove 4-2 composition, the passage that this groove 4-2 provides useless chalk to discharge, this is not provided as the lower segment magnet 12 (as shown in Figure 9) of chalk hairclipper in groove 4-1, and N is positive integer and N >=2.

In a preferred embodiment, described N is positive integer and N >=2, and N is even number.For example, in N value 6,8,10,12,16.

As shown in Figure 5, in the present embodiment, N value is 8, and the chalk holder so making is both attractive in appearance, symmetrical, and structure complexity is moderate.

In further embodiments, N can also value be to be greater than 2 odd number, and for example N value is in 5,9,15, certainly not as restriction.

The value of N in a plurality of embodiment, is only the restriction to structure above, and for example value is 8, equally forms 8 not groove 4-1 and 8 groove 4-2, according to this instruction, can realize at an easy rate the embodiment of other values.

If Fig. 6 is in conjunction with Fig. 1, Fig. 2, shown in Fig. 3, described disk 5 and lower cylinder 4 adjacency, it is comprised of a disk body, in this disc body, be formed with N the fan-shaped 5-3 of equal portions (for loss of weight and attractive in appearance) being cut, and in disc body, between adjacent fan-shaped 5-3, form N wide passage 5-4, this passage 5-4 forms the passage that chalk is vertically placed, the bottom surface of chalk is parallel to the card of disk body and is affixed on passage 5-4, the center being positioned in the disc body on N fan-shaped 5-3 inward flange top is also formed with a central functionality district 5-5, on this central functionality district 5-5, be formed with the conduit 5-1 of described not groove 4-1 adaptation and with the useless chalk conduit 5-2 of described groove 4-2 adaptation.

In conduit 5-1, be provided with push jack 13 (as shown in Figure 9).

As previously shown, in the present embodiment, this N value is 8.Shown in Fig. 6, the fan-shaped 5-3 of equal portions, the passage 5-4 in the present embodiment, conduit 5-1, useless chalk conduit 5-2 are 8.

If Fig. 7 is in conjunction with as shown in Fig. 1, Fig. 2, Fig. 3, described upper cylinder 6 and described lower cylinder 4 adjacency, it is comprised of a cylindrical body, on cylindrical body, be formed with chute 6-1, N hole 6-2 and a limit for height groove 6-3 who is positioned at cylindrical body lower end position for chalk ejection that the described lower segment magnet 11 of N slides, the height of this limit for height groove 6-3 is less than half of height of lower cylinder 4.This limit for height groove 6-3 is for limiting the height of useless chalk, as preferred embodiment, the height of described limit for height groove 6-3 is 25mm, thereby height can be pressed in this limit for height groove lower than the chalk of 25mm and skid off along the useless chalk conduit 5-2 on aforementioned disk 5 and the groove 4-2 of lower cylinder 4, and can not be ejected to user again.

In chute 6-1, be provided with magnet 14 (as shown in Figure 9).

As previously shown, in the present embodiment, this N value is 8.Shown in Fig. 7, the fan-shaped chute 6-1 of equal portions in the present embodiment, the hole 6-2, the limit for height groove 6-3 that for chalk, eject are 8.

As shown in Figure 8, the number of chalk fixed head 10 is the twice (2N) of the number (N) of described disk 5 upper channel 5-4, and the edge of each passage 5-4 is all fixed two chalk fixed heads, 10 formation chalk stationary conduits the chalk (B1, B2) of vertically placing is fixed on passage 5-4;

As shown in Figure 8, described chalk push jack 7, push jack driving mechanism 8 are arranged in each chalk stationary conduit, push jack driving mechanism 8 is comprised of a spring 8-1 and axis of guide 8-2, spring 8-1 is sleeved on upper and its one end of leading axle 8-2 against chalk push jack 7 other ends against by handle 9, one end of leading axle 8-2 is fixedly connected with chalk push jack 7, and its other end stretches in handle 9 and can be at the interior stretching motion of described handle 9 under the left and right of described spring 8-1.

Chalk as shown in Figure 9 ejects signal, shown in Fig. 1, Fig. 2 and Fig. 3, wherein label 12,14 represents respectively the magnet arranging in aforementioned lower cylinder 4 and upper cylinder 6, magnetic force by magnet 12,14 carrys out grip gasket 13, pad 13 promotes chalk and pops up, stopper 15 is in order to limit the height of magnet, thus the height of restriction chalk.

By the peer with magnet 12, repel and give magnet thrust, thereby chalk is ejected.

Magnet 11 in box body 3-1 maintains static, lower cylindrical not groove 4-1 is in order to hold magnet 12, the conduit 5-1 of disk 5 is in order to hold push jack 13, upper cylindrical chute 6-1 is in order to hold magnet 14, the object of magnet 12 is in order to drive push jack 13 and chalk to eject, and the object of magnet 14 is in order to clamp push jack 13 by the attraction of magnet 12.During motion, by magnet 12, push jack 13, magnet 14, drive chalk B1 to move upward, chalk is ejected.

Although the utility model discloses as above with preferred embodiment, so it is not in order to limit the utility model.Under the utility model, in technical field, have and conventionally know the knowledgeable, within not departing from spirit and scope of the present utility model, when being used for a variety of modifications and variations.Therefore, protection domain of the present utility model is when being as the criterion depending on claims person of defining.

Claims (9)

1. a chalk holder, is characterized in that, comprises a rotatable disk body, a base plate (1) and an axle (2), and described disk body is fixed on base plate (1) by described axle (2);

Described disk body is comprised of box body (3), lower cylinder (4), disk (5), upper cylinder (6), chalk push jack (7), push jack driving mechanism (8), handle (9) and chalk fixed head (10);

Described axle (2) is multidiameter, and on it, the diameter of part is less than the diameter of lower part, and it is upper that its underpart tilts to be fixed on base plate (1), has a predetermined inclination α between described axle (2) and horizontal plane, and the scope of predetermined inclination α is at 45 °～90 °;

The upper part of described axle (2) is set with described box body (3), lower cylinder (4), disk (5) and upper cylinder (6) successively, wherein:

Described box body (3) is " 8 " word shape structure, is sleeved on axle (2) and goes up and fix and invariant position, has the first cylindrical groove position (17) and the second cylindrical groove position (18) on this box body, is wherein respectively arranged with magnet;

Described lower cylinder (4) and box body (3) adjacency, it is comprised of a cylindrical body, on cylindrical body, be formed with N identical not groove (4-1) and N identical groove (4-2) composition, the passage that this groove (4-2) provides useless chalk to discharge, this is not provided as the lower segment magnet (11) of chalk hairclipper in groove (4-1), and N is positive integer and N >=2;

Described disk (5) and lower cylinder (4) adjacency, it is comprised of a disk body, in this disc body, be formed with N the equal portions fan-shaped (5-3) that cut, and in disc body, between adjacent fan-shaped (5-3), form N wide passage (5-4), this passage (5-4) forms the passage that chalk is vertically placed, the bottom surface of chalk is parallel to the card of disk body and is affixed on passage (5-4), the center being positioned in the disc body on N fan-shaped (5-3) inward flange top is also formed with a central functionality district (5-5), in this central functionality district (5-5), be formed with the conduit (5-1) adaptive with described not groove (4-1) and the useless chalk conduit (5-2) adaptive with described groove (4-2), in conduit (5-1), be provided with pad (13),

Described upper cylinder (6) and described lower cylinder (4) adjacency, it is comprised of a cylindrical body, on cylindrical body, be formed with chute (6-1), N the hole (6-2) and the limit for height groove (6-3) that is positioned at cylindrical body lower end position that for chalk, eject that N described lower segment magnet (11) slides, the height of this limit for height groove (6-3) is less than half of height of lower cylinder (4), is provided with magnet (14) in described chute (6-1);

The number of described chalk fixed head (10) is the twice of the number of described disk (5) upper channel (5-4), and the edge of each passage (5-4) is all fixed two chalk fixed heads (10) formation chalk stationary conduit the chalk of vertically placing is fixed on passage (5-4);

Described chalk push jack (7), push jack driving mechanism (8) are arranged in each chalk stationary conduit, push jack driving mechanism (8) is comprised of a spring (8-1) and the axis of guide (8-2), spring (8-1) is sleeved on upper and its one end of leading axle (8-2) against chalk push jack (7) other end against by handle (9), one end of leading axle (8-2) is fixedly connected with chalk push jack (7), its other end stretch in handle (9) and under the left and right of described spring (8-1) can be in described handle (9) stretching motion.

2. chalk holder according to claim 1, is characterized in that, described N is positive integer and N >=2, and N is even number.

3. chalk holder according to claim 1, is characterized in that, described N value is in 6,8,10,12,16.

4. chalk holder according to claim 1, is characterized in that, described N value is in 5,9,15.

5. chalk holder according to claim 1, is characterized in that, described predetermined inclination α is 50 °.

6. chalk holder according to claim 1, is characterized in that, described predetermined inclination α is 60 °.

7. chalk holder according to claim 1, is characterized in that, the height of described limit for height groove (6-3) is 25mm.

8. chalk holder according to claim 1, is characterized in that, the diameter of the lower part of described axle (2) is 35mm, and the diameter of upper part is 25mm.

9. according to the chalk holder described in any one in claim 1-8, it is characterized in that, described chalk holder also comprises a chalk lid (20) with holes, is arranged on the top of described upper cylinder (6).