CN204136629U - Multifunctional chalk clamping device - Google Patents

Abstract

The utility model discloses a teaching tool, in particular to a multifunctional chalk holder. The utility model provides a chalk holder which continuously sends out chalk and can realize teaching instructions, comprising: a retainer, which includes a holding section and a cylindrical guide rail section, on which two guide rail sections are axially arranged. Chutes, the two chutes are arranged oppositely; an integrated circuit board, a laser generator and a switch button are arranged on the integrated circuit board, and the integrated circuit board is arranged in the holding section, and the holding section is provided with a Mounting holes for the laser generator and switch button to pass through. Tailstock, the tailstock is provided with a slide bar, the tailstock is sleeved in the guide rail section and can move along the axial direction of the guide rail section, the two ends of the slide bar penetrate the chute respectively; the spiral cylinder, the The inner wall has a double-ended internal thread, and the spiral cylinder can be rotatably sleeved on the cage, and the double-ended internal thread cooperates with the two ends of the slide rod; the cylindrical clamping sleeve is installed at the end of the guide rail section .

Description

Multifunctional Chalk Holder

technical field

The utility model relates to a teaching tool, in particular to a multifunctional chalk holder. the

Background technique

Traditional "blackboard writing" teaching has an irreplaceable role. Most teachers cannot do without chalk. However, chalk itself has disadvantages such as easy breakage, low utilization rate, and easy to dirty hands and clothes. At present, the existing chalk sets on the market mainly use the automatic pencil feeding method. This pulsating feeding method makes the chalk feeding not smooth and easy to get stuck. It is necessary to press the chalk set upside down during operation, which is inconvenient and comfortable to use. Poor degree. the

Utility model content

The technical problem to be solved by the utility model is to provide a chalk holder which continuously sends out chalk and can realize teaching instructions. the

The chalk holder that the utility model solves its technical problem adopts, comprises:

The cage includes a holding section and a cylindrical guide rail section, the guide rail section is provided with two slide grooves in the axial direction, and the two slide grooves are arranged opposite to each other;

An integrated circuit board, the integrated circuit board is provided with a laser generator and a switch button, the integrated circuit board is arranged in the holding section, and the holding section is provided with a mounting hole for the laser generator and the switching button to pass through;

Tailstock, the tailstock is provided with a slide bar, the tailstock is sleeved in the guide rail section and can move axially along the guide rail section, and the two ends of the slide bar penetrate the chute respectively;

A spiral cylinder, the inner wall of which is provided with a double-ended internal thread, the spiral cylinder is rotatably sleeved on the cage, and the double-ended internal thread cooperates with the two ends of the slide rod;

A cylindrical clamping sleeve mounted on the end of the rail segment. the

Further, the clamping end of the clamping sleeve is composed of at least two circular arc pieces. the

Further, an arc protrusion is provided on the inner wall of each arc sheet. the

Further, there are six circular arc pieces. the

Further, one end of the spiral cylinder is sleeved on the clamping end, and the other end is rotatably sleeved on the cage. the

Further, one end of the spiral barrel is provided with an annular locking groove, and the retainer is provided with an annular locking block, and the annular locking groove and the annular locking block are installed in cooperation with each other. the

Further, the tailstock is in a cylindrical shape, and the bottom of the tailstock near the holding section is in the shape of a truncated cone. the

Further, the double-start internal thread is a rectangular thread, and the width of the thread teeth is larger than that of the slide bar. the

Further, the integrated circuit board is also provided with a wireless communication module and control buttons for controlling the wireless communication module. the

Further, one end of the holding section is in contact with the guide rail section, and the other end is provided with an end cover, and the end cover is provided with an installation hole for installing the laser generator. the

The beneficial effect of the utility model is: due to the cooperation of the spiral cylinder and the slide rod, the rotation of the spiral cylinder can make the slide rod advance or retreat, thereby driving the tailstock to advance or retreat to push the chalk. The propulsion is continuous, so the chalk can be sent out continuously, and the double-ended internal thread can push both ends of the slide bar at the same time, so that the force on the slide bar is balanced to avoid jamming. The clamping end of the clamping sleeve is made of a circular arc sheet, so that the clamping end has a certain degree of elasticity, so that the chalk can be firmly clamped. An integrated circuit board is arranged in the holding section, and the laser generator on the integrated circuit board can generate laser light, thereby obtaining the function of teaching instructions. The wireless communication module on the integrated circuit board can also control the page turning of presentation software such as ppt, which is convenient for teaching. the

Description of drawings

Fig. 1 is a half cutaway view of the utility model;

Figure 2 is a schematic diagram of the utility model clamping sleeve

Fig. 3 is the top view of Fig. 2;

Fig. 4 is the schematic diagram of circular arc protrusion;

Parts, parts and numbers in the figure: end cover 1, switch button 2, cage 3, slide rod 4, tailstock 5, spiral barrel 6, clamping sleeve 7, integrated circuit board 8, arc protrusion 9. the

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described. the

As shown in Figure 1, the utility model includes,

The cage 3 includes a holding section and a cylindrical guide rail section. Two slide grooves are arranged in the axial direction on the guide rail section, and the two slide grooves are oppositely arranged; the two slide grooves are main slide grooves, and the two slide grooves are mainly It serves as a guide, and also for the slide rod 4 to pass through. The cylindrical guide rail section can be put into for chalk. The grip section is usually a hollow structure to reduce weight, and its surface can be provided with anti-skid lines for easy grip. the

An integrated circuit board 8, said integrated circuit board 8 is provided with a laser generator and a switch button 2, said integrated circuit board 8 is arranged in the holding section, and the holding section is provided with a laser generator and a switch button 2 to pass through through the mounting holes. The integrated circuit board 8 can be powered by a battery, and the battery compartment is arranged on the holding section. the

Tailstock 5, the tailstock 5 is provided with a slide bar 4, the tailstock 5 is sleeved in the guide rail section and can move along the axial direction of the guide rail section, and the two ends of the slide bar 4 penetrate through the chute respectively ; The main effect of tailstock 5 is to advance the chalk, and the two ends of the slide bar 4 on the tailstock 5 pass through the chute and cooperate with the double-ended internal thread. the

The inner wall of the spiral cylinder 6 is provided with a double-ended internal thread, and the spiral cylinder 6 is rotatably sleeved on the cage 3, and the double-ended internal thread cooperates with the two ends of the slide rod 4; when the spiral cylinder 6 is selected, Utilize the double-ended internal thread transmission to slide bar 4, thereby promote tailstock 5 to advance or retreat, and then make chalk motion. the

The cylindrical clamping sleeve 7 is installed on the end of the guide rail section, and the clamping sleeve 7 is mainly for clamping the chalk to prevent the chalk from slipping off. the

The specific working process of the above structure is as follows: put the chalk into the guide rail section through the clamping sleeve 7, when it is necessary to send out the chalk, turn the spiral cylinder 6, and use the double-ended internal thread to drive the slide rod 4 to move along the axis of the cage 3 , so that the tailstock 5 pushes the chalk, thereby completing the action of sending the chalk. The chalk set adopts a double-line internal thread screw-in feeding method, the chalk is sent out smoothly and smoothly, and it is comfortable to use. When the laser generator needs to be used, press the switch button 2 to realize the laser indication. the

At the same time, a wireless communication module and control buttons for controlling the wireless communication module can also be arranged on the integrated circuit board 8 . Use the wireless communication module to transmit commands, so as to realize the page turning function of PPT and other computer presentation files. Integrate modern teaching methods into traditional teaching methods to make teachers more flexible in teaching

In order to better clamp the chalk, as shown in FIG. 2 and FIG. 3 , the clamping end of the clamping sleeve 7 is composed of at least two circular arc pieces. Generally, there are six circular arc pieces, equivalent to six clamping claws, which are used to clamp and fix the chalk. The inner wall of each arc sheet is provided with an arc protrusion 9, which can better hold the chalk and prevent the chalk from slipping. the

Specifically, as shown in FIG. 1 , one end of the spiral cylinder 6 is sleeved on the clamping end, and the other end is rotatably sleeved on the cage 3 . The spiral tube 6 is sleeved on the clamping end to limit the circular arcs on the clamping end, thereby avoiding arbitrary deformation of the circular arcs. the

Specifically, as shown in FIG. 1 , one end of the spiral barrel 6 is provided with an annular locking groove, and the cage 3 is provided with an annular locking block, and the annular locking groove and the annular locking block are installed in cooperation with each other. The tailstock 5 is in a cylindrical shape, and the bottom of the tailstock 5 near the holding section is in the shape of a truncated cone. The double-ended internal thread is a rectangular thread, and the thread width is greater than that of the slide bar 4, which can prevent the slide bar 4 from being stuck in the thread. the

Claims (10)

1. multifunctional chalk clamping device, is characterized in that: comprising:

Retainer (3), it comprises the guide rail section of holding section and tubular, described guide rail section is provided with vertically two chutes, and described two chutes are oppositely arranged;

Surface-mounted integrated circuit (8), described surface-mounted integrated circuit (8) is provided with laser generator and shift knob (2), described surface-mounted integrated circuit (8) is arranged in holding section, and holding section offers the installing hole passed for laser generator and shift knob (2);

Tailstock (5), described tailstock (5) is provided with slide bar (4), and described tailstock (5) is set in also can along the axially-movable of guide rail section in guide rail section, and the two ends of described slide bar (4) penetrate chute respectively;

Spiral-tube (6), its inwall has double-head inner thread, and described spiral-tube (6) is rotatably set on retainer (3), and described double-head inner thread coordinates with the two ends of slide bar (4);

The retaining sleeve (7) of tubular, it is arranged on the end of guide rail section.

2. multifunctional chalk clamping device as claimed in claim 1, is characterized in that: the bare terminal end of described retaining sleeve (7) is made up of at least two arc plates.

3. multifunctional chalk clamping device as claimed in claim 2, is characterized in that: the inwall of each arc plate is provided with circular arc projection (9).

4. multifunctional chalk clamping device as claimed in claim 2, is characterized in that: described arc plate is provided with six.

5. multifunctional chalk clamping device as claimed in claim 1, it is characterized in that: one end of described spiral-tube (6) is set on bare terminal end, the other end is rotatably set on retainer (3).

6. multifunctional chalk clamping device as claimed in claim 5, it is characterized in that: one end of described spiral-tube (6) is provided with annular slot, (3) are provided with annular fixture block to described retainer, and described annular slot and annular fixture block cooperatively interact installation.

7. multifunctional chalk clamping device as claimed in claim 1, is characterized in that: described tailstock (5) is in tubular, and described tailstock (5) is taper type near the bottom of holding section.

8. multifunctional chalk clamping device as claimed in claim 1, it is characterized in that: double-head inner thread is rectangular thread, and ridge width is greater than slide bar (4).

9. multifunctional chalk clamping device as claimed in claim 1, is characterized in that: the control button described surface-mounted integrated circuit (8) being also provided with wireless communication module and control wireless communication module.

10. multifunctional chalk clamping device as claimed in claim 1, it is characterized in that: one end of described holding section connects with guide rail section, the other end is provided with end cap (1), described end cap (1) is provided with the installing hole installing laser generator.