CN201822147U

CN201822147U - Pencil box

Info

Publication number: CN201822147U
Application number: CN2009202008604U
Authority: CN
Inventors: 袁佳倪; 阮峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-11-26
Filing date: 2009-11-26
Publication date: 2011-05-11
Anticipated expiration: 2019-11-26

Abstract

The utility model discloses a pencil box at least comprising a shell used for containing pencils, erasers and rulers, wherein at least one interlayer is arranged in the shell, a sealed heating chamber is formed between the interlayer and the shell, and a heating circuit is arranged in the heating chamber and at least provided with a power supply, a temperature switch, a start switch, a heating element, a charge interface used for charging the power supply and a charge control circuit; and the power supply, the temperature switch, the start switch and the heating element are connected in series, the charge interface is connected in parallel with the power supply through the charge control circuit, and the start switch and the charge interface are respectively arranged on the shell. The pencil box can heat through the heating circuit so as to provide heat for the shell and has comfortable temperature in winter or under other cold environments.

Description

A kind of pencil box

Technical field

The utility model relates to the duricrust pencil box that a kind of student uses.

Background technology

Pencil box has very important utility function as student stationery, and pencil box has comprised two classes usually, and a class is with the pen bag of canvas or leather or flexiplast making, pen container etc.; Another kind of is exactly the pencil box that plastics, metal, timber with hard are made.The described pencil box of the latter has hard shell, and volume inside can be used for placing other stationery.Such pencil box is owing to place extraction stationery conveniently, and its hard shell is the stationery of protection inside placement effectively, is therefore extensively favored.Existing such pencil box does not just have other actual function except holding stationery.Generally do not heat winter in the classroom of southern area, pencil box is placed on any one all can become ice-cold, this has brought uncomfortable feeling to the user, especially both hands cold take again in stiff ice-cold pencil box with and inner ice-cold pencil, certainly will be unfavorable for that the user carries out ensuing writing.

The utility model content

The technical problems to be solved in the utility model provides a kind of pencil box that can keep the comfortable temperature of human body sensory under cold environment.

For solving the problems of the technologies described above, the utility model adopts following technical scheme; This pencil box comprises at least and is used to hold pen, the housing of rubber and ruler, described enclosure interior is provided with an interlayer at least, form the heating chamber of sealing between described interlayer and the housing, described heating is provided with the heating circuit in the chamber, described heating circuit comprises power supply at least, temperature switch, starting switch, heater, charging inlet and charging control circuit for power source charges, described power supply, temperature switch, starting switch and heater are cascaded, described charging inlet is connected in parallel by charging control circuit and power supply, and described starting switch and charging inlet all are arranged on the housing.

As of the present utility model preferred, described power supply comprises that some are rectangular-shaped lithium battery, connects between the described lithium battery or is connected in parallel.It is little that lithium battery has a volume, and advantage capacious can make heating circuit volume microminiaturization like this, thereby keep the effective saturation of pencil box as far as possible.Rectangular-shaped profile is that the chewing gum battery can be convenient to arrange heater by vacating space.

As of the present utility model preferred, described temperature switch closely is connected with housing.Temperature switch adopts thermostatic control ptc temperature-sensitive element, its operating characteristic is a resistivity with the temperature variation that is directly proportional, when therefore the temperature that produces at heater makes the resistance of temperature switch reach infinity, the heating circuit has just stopped work, again because temperature switch and housing closely link together, so the temperature of housing is maintained within a certain range all the time.

As of the present utility model preferred, described heater is made up of many heating resistors, and described heating resistor disperses to be arranged on housing bottom, and described heating resistor is fixed on the housing by heat-conducting silicone grease.Help direct conduction of heat that heating resistor sends like this, make housing can in the shortest time, arrive the temperature value of setting to housing.

As of the present utility model preferred, described charging control circuit is provided with charging indicator light, and described charging indicator light is arranged on the housing.Charging indicator light is the charge condition of display power supply intuitively, and is easy to use.

As of the present utility model preferred, be parallel with working indicating on the described heater, described working indicating comprises relay indicating light and divider resistance at least, and described relay indicating light and divider resistance are connected in series, and described relay indicating light is arranged on the housing.When the heating circuit when in running order relay indicating light will light, can inform the generate heat working condition of circuit of user intuitively.

As of the present utility model preferred, be parallel with lighting circuit on the described power supply, described lighting circuit comprises illuminating lamp and light switch at least, and described illuminating lamp and light switch are connected in series, and described illuminating lamp and light switch all are arranged on the housing.Lighting circuit has been arranged, and pencil box can also be realized illumination functions.

The utility model adopts technique scheme: this pencil box can be realized heating by the heating circuit of self, and then provide heat for the pencil box housing, under winter and other cold environment situation, can make pencil box have comfortable temperature, so not only can make the user have preferable feel, avoiding outside the ice-cold sensation can also be the heating of the stationery in the pencil box, and the user just needn't worry that ice-cold stationery has influenced and write.

Description of drawings

Engaging the drawings and specific embodiments below further specifies the utility model.

Fig. 1 is the front view of a kind of pencil box of the utility model;

Fig. 2 is the right view of Fig. 1;

Fig. 3 is the left view of Fig. 1;

Fig. 4 is the internal structure schematic diagram of a kind of pencil box of the utility model;

Fig. 5 is the circuit diagram of the heating circuit of a kind of pencil box of the utility model.

The specific embodiment

As shown in Figure 1, 2, 3, this pencil box is rectangular-shaped, and it is divided into housing 1 and lid 2.As shown in Figure 4, be provided with an interlayer 3 with housing 1 one in housing 1 inside, interlayer 3 is divided into two housing 1 inner space up and down, and the space of interlayer 3 tops is used to hold stationery such as pen, rubber and ruler; The space of interlayer 3 belows is sealed space, is provided with heating circuit 4 in the sealing space.This heating circuit 4 comprises power supply 5, temperature switch RT, starting switch K2, heater 6, is the charging inlet 7 and the charging control circuit 8 of power supply 5 chargings.As shown in Figure 5, in the heating circuit 4, power supply 5 is connected with temperature switch RT, and temperature switch RT connects with starting switch K2, and starting switch K2 connects with heater 6, and heater 6 is connected to form the loop with power supply 5; Charging inlet 7 is connected on the charging control circuit 8, and charging control circuit 8 is connected in parallel on the power supply 5, and charging control circuit 8 is provided with charging indicator light D5.Power supply 5 is rectangular-shaped lithium battery by two and is formed in parallel, but thereby the little capacity of power supply 5 volumes big.Temperature switch RT is the ptc thermistor of positive temperature coefficient, having provides thermostatically controlled function, resistivity improves suddenly when temperature reaches setting value, in order to adapt to the requirement of human body to temperature, even the infinitely-great value of this desired temperature temperature switch RT resistivity is 40 degrees centigrade.Because during the use of pencil box is directly to contact with hand,, make the temperature of housing 1 to be discovered constantly by temperature switch RT so the temperature that must control pencil box housing 1 so just must closely be connected temperature switch RT with housing 1 in suitable scope.When the resistivity of housing 1 temperature temperature switch RT when 40 spend just is tending towards infinitely great, thereby temperature switch RT gives heating circuit 4 with the reaction in time of housing 1 temperature.Heater 6 is to be formed in parallel for two groups by 14 heating resistors, 9 five equilibriums, and every group of seven heating resistors 9 are connected in series; Heating resistor 9 disperses to be arranged on the housing 1, is fixed on the housing 1 by heat-conducting silicone grease 10, as shown in Figure 4, helps heat like this and is delivered to fast on the housing 1, makes housing 1 reach predetermined temperature fast.As shown in Figure 2, starting switch K2, charging inlet 7 and charging indicator light D5 are arranged on the side of housing 1, expose on housing 1 surface.Heating circuit 4 is just started working after starting switch K2 closes, heater 6 persistent fevers, then give housing 1 heating, the temperature of housing 1 is monitored by temperature switch RT constantly simultaneously, temperature switch RT resistivity infinity when housing 1 temperature is spent above 40, and then making heating circuit 4 open a way, heater 6 quits work; Temperature switch RT resistivity diminishes until recovering normal after housing 1 temperature descends, and heater 6 works on.Charging inlet 7 is common circular interface, only need during charging and will be connected on from the dc source 5 of outside on the charging inlet 7, behind charging control circuit 8, flow to power supply 5, charging indicator light D5 lights during charging, and along with the color of the change charging indicator light D5 of power supply 5 voltages also can change, promptly when power supply 5 electric weight are not enough, show redness, show green when power supply 5 electric weight are sufficient.This heating circuit 4 has been arranged, and the space of housing 1 inner sealing has just formed heating chamber 13.

Duty for demonstration that can be clear and intuitive heating circuit 4, also be provided with working indicating 11 on the heating circuit 4, as shown in Figure 5, this working indicating 11 is connected in parallel on the heater 6, it is in series by relay indicating light D4 and divider resistance R2, as shown in Figure 2, relay indicating light D4 and charging charging indicator light D5 together are arranged on the same side of housing 1.When heater 6 energising work, relay indicating light D4 can light simultaneously.

As shown in Figure 5, also be provided with a lighting circuit 12 in heating circuit 4 peripheries, this lighting circuit 12 comprises three led illuminating lamp D1, D2, D3, light switch K1 and divider resistance R1, light switch K1 is connected on the power supply 5, divider resistance R1 connects with light switch K1, connects with divider resistance R1 after three led illuminating lamp D1, D2, the D3 parallel connection.Light switch K1 is arranged on this side that housing 1 is provided with starting switch K2; As shown in Figure 3, three led illuminating lamp D1, D2, D3 are provided with on the another side of housing 1.During use, the light switch K1 that closes, three led illuminating lamp D1, D2, D3 light, and have realized illumination functions like this under the situation that does not influence 4 work of heating circuit, make pencil box have stronger practicality.

Claims

1. pencil box, which comprises at least and be used to hold pen, the housing of rubber and ruler (1), described housing (1) inside is provided with an interlayer (3) at least, it is characterized in that: the heating chamber (13) that forms sealing between described interlayer (3) and the housing (1), be provided with heating circuit (4) in the described heating chamber (13), described heating circuit (4) comprises power supply (5) at least, temperature switch (RT), starting switch (K2), heater (6), charging inlet (7) and charging control circuit (8) for power supply (5) charging, described power supply (5), temperature switch (RT), starting switch (K2) and heater (6) are cascaded, described charging inlet (7) is connected in parallel by charging control circuit (8) and power supply (5), and described starting switch (K2) and charging inlet (7) all are arranged on the housing (1).

2. according to the described pencil box of claim 1, it is characterized in that: described power supply (5) comprises that some are rectangular-shaped lithium battery, connects between the described lithium battery or is connected in parallel.

3. according to the described pencil box of claim 1, it is characterized in that: described temperature switch (RT) closely is connected with housing (1).

4. according to the described pencil box of claim 1, it is characterized in that: described heater (6) is made up of many heating resistors (9), described heating resistor (9) disperses to be arranged on housing (1) bottom, and described heating resistor (9) is fixed on the housing (1) by heat-conducting silicone grease (10).

5. according to the described pencil box of claim 1, it is characterized in that: described charging control circuit (8) is provided with charging indicator light (D5), and described charging indicator light (D5) is arranged on the housing (1).

6. according to claim 1 or 4 described pencil boxes, it is characterized in that: be parallel with working indicating (11) on the described heater (6), described working indicating (11) comprises relay indicating light (D4) and divider resistance (R2) at least, described relay indicating light (D4) and divider resistance (R2) are connected in series, and described relay indicating light (D4) is arranged on the housing (1).

7. according to the described pencil box of claim 1, it is characterized in that: be parallel with lighting circuit (12) on the described power supply (5), described lighting circuit (12) comprises illuminating lamp (D1, D2, D3) and light switch (K1) at least, described illuminating lamp (D1, D2, D3) and light switch (K1) are connected in series, and described illuminating lamp (D1, D2, D3) and light switch (K1) all are arranged on the housing (1).