CN211123661U - Control circuit and handheld tool - Google Patents

Abstract

The utility model relates to a hand tool field is a control circuit and hand tool, including power, triode, light emitting source, first electric capacity and second electric capacity, the power current flows to the parallel light emitting source and the second electric capacity from the positive pole through the collecting electrode, the projecting pole of triode in proper order, and the branch road where the second electric capacity is located is provided with the switch; the first capacitor and the second capacitor are connected in series; the power is through control switch to first electric capacity charges, and first electric capacity is connected with the triode base, still provides a handheld instrument, including handheld portion and operating head, the operating head is connected on the mount pad in the handheld portion, the light source sets up the one end that is close to the operating head in handheld portion, control switch sets up the one end of keeping away from the operating head in handheld portion, first switch and second switch setting can provide the illumination of minizone for operating personnel when overhauing the operation on handheld portion lateral wall, and the operation of being convenient for goes on, improves work efficiency.

Description

Control circuit and handheld tool

Technical Field

The utility model relates to a hand tool field particularly, relates to a control circuit and hand tool.

Background

Maintenance work ubiquitous in a plurality of trades, often can be used to handheld tool, illumination condition is poor in the workspace region of part maintenance work, the instrument is difficult to aim at the equipment position when overhauing the work, cause the maintenance difficulty, for example in electric power maintenance operation, instrument such as commonly-used screwdriver, when electric power system breaks down and needs to overhaul, because the power failure leads to illumination condition poor, the operation difficulty when overhauing, can't accurately find the position of operating point, and use auxiliary light source then need operating personnel to vacate a hand and throw out the illumination, or need other staff cooperations, make maintenance work waste time and energy, can prolong maintenance time even, lead to the power failure accident time to increase, bring very big loss for the electric wire netting.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a control circuit and hand-held tool to solve above-mentioned problem.

In order to realize the purpose of the utility model, the technical scheme is that the control circuit comprises a power supply, a triode, a luminous source, a first capacitor and a second capacitor, wherein the power supply current flows from the positive electrode to the luminous source and the second capacitor which are connected in parallel through a collector and an emitter of the triode in sequence, and a branch circuit where the second capacitor is arranged is provided with a switch; the first capacitor and the second capacitor are connected in series; the power supply charges the first capacitor through the control switch, and the first capacitor is connected with the base electrode of the triode.

Further, the switch includes a first switch and a second switch connected in series.

Further, the light emitting source is a light emitting diode.

Further, the light emitting source is a plurality of light emitting diodes connected in series.

Further, the control switch is a trigger switch.

Still provide a hand tool, including handheld portion and operating head, the operating head is connected on the mount pad in the handheld portion, the light source sets up the one end that is close to the operating head in handheld portion, the one end of operating head is kept away from in handheld portion to the control switch setting, first switch and second switch setting are on handheld portion lateral wall.

Further, the first switch and the second switch are oppositely arranged on the side wall of the handheld part.

Further, the surface of the handheld part is provided with anti-slip rubber.

Furthermore, the operating head with the mount pad junction is prismatic joint, mount pad inside be provided with prismatic holding tank that prismatic matches on the operating head.

The utility model has the advantages of it is following:

the hand-held tool with the lighting function and the control circuit thereof are provided, so that small-range lighting can be provided for operators during maintenance operation, operation work is facilitated, and the working efficiency is improved.

Drawings

Fig. 1 is a schematic diagram of a control circuit in an embodiment of the present invention;

fig. 2 is a schematic cross-sectional view of a hand tool according to an embodiment of the present invention.

1-a triode; 11-a collector electrode; 12-an emitter; 13 a base electrode; 2-a light emitting source; 3-a first capacitance; 4-a second capacitance; 5-control switch; 6-a switch; 61-a first switch; 62-a second switch; 7-operating the head; 8-a hand-held portion; 81-mounting seat.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are merely for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the present invention is not limited thereto.

As shown in fig. 1-2:

a control circuit comprises a power supply, a triode 1, a light emitting source 2, a first capacitor 3 and a second capacitor 4, wherein power supply current sequentially flows from the positive electrode through a collector 11 and an emitter 12 of the triode 1 to the light emitting source 2 and the second capacitor 4 which are connected in parallel, and a branch circuit where the second capacitor 4 is located is provided with a switch 6; the first capacitor 3 and the second capacitor 4 are connected in series; the power supply charges the first capacitor 3 through the control switch 5, and the first capacitor 3 is connected with the base 13 of the triode 11.

The power supply supplies power to the light-emitting source 2 via the collector 11 and the emitter 12, and a small current of the base 13 is required to enter, and the current is processed to meet the light-emitting requirement of the light-emitting source 2, and the small current is provided by the first capacitor 3, namely the small current entering from the base 13; the first capacitor 3 is charged by a power supply, when the control switch 5 is switched on, the power supply charges the first capacitor 3, the charging process is very short, namely the control switch 5 only needs to be closed for a short time; after the first capacitor 3 discharges to a certain extent in the operation process, the light-emitting source 2 cannot be continuously supported and lightened, at this time, the switch 6 is closed, the power supply charges the second capacitor 4, because the first capacitor 3 and the second capacitor 4 are connected in series, that is, when the second capacitor 4 is charged, the first capacitor 3 is also charged, because the potential difference between the two ends of the first capacitor is increased, the first capacitor is equivalent to charging the second capacitor 4 to supplement the electric quantity of the first capacitor 3, so that the current coming from the base electrode 13 can be continuously supported and lightened, and certainly, the switch 6 needs to be closed.

Preferably, the switch 6 comprises a first switch 61 and a second switch 62 connected in series.

The provision of a first 61 and a second 62 switch in series, i.e. a circuit for charging the second capacitor 4 to be switched on, requires that both switches be closed at the same time, as a measure of safety, in connection with a particular use scenario.

Preferably, the light-emitting source 2 is a light-emitting diode.

The energy conversion ratio of the light-emitting diode is high, the colors can be selected more, in a specific use scene, people can specifically select, for example, in a factory area, the condition that fog is serious exists, people can select yellow light, the environment is adapted by the characteristic that yellow light has good penetrability, the colors and the like can be freely selected correspondingly in other working spaces or according to the conditions such as preference of users, and the like.

Preferably, the light-emitting source 2 is a plurality of series-connected light-emitting diodes.

The light source 2 is provided to provide a certain degree of illumination, and as for the control circuit, the control circuit only needs the same control logic to control the on/off of the plurality of leds, but in the actual use scene, the requirements for the light source are diversified, for example, when the control circuit is operated near some devices with good mirror surface conditions, if the illumination is too strong, the reflected light is dazzled, but the working state of the operator is affected, but in some dark areas, stronger illumination is needed, and here, by providing different numbers of leds, the effect of controlling the illumination brightness can be achieved, and of course, the effect is not only seemingly to adjust one illumination condition, but the user can use a proper illumination degree according to the requirements.

Preferably, the control switch 5 is a trigger switch.

The trigger switch is a switch which only needs to make a trigger action, that is, the switch does not need to be closed for a long time, the circuit can be triggered only by one closed action, for example, a connection point which can make the circuit conducted is arranged at the cut-off position of a loop, the connection point is the trigger switch, after the circuit is conducted by pressing the switch, the trigger switch can be bounced, and the bounced mode can use a spring, a reed and the like.

Still provide a hand-held tool, including handheld portion 8 and operating head 7, operating head 7 is connected on the mount pad 81 in handheld portion, and light source 2 sets up the one end that is close to operating head 7 at handheld portion 8, and control switch 5 sets up the one end of keeping away from operating head 7 at handheld portion 8, and first switch 61 and second switch 62 set up on handheld portion 8 lateral wall.

The hand-held part is the part held by the operator, when the operator holds the hand-held part, corresponding operation is carried out, if illumination is needed, the control switch 5 is only needed to be pressed, the power supply charges the first capacitor 3, the current from the first capacitor 3 flows to the emitter through the base electrode 13, the current from the original power supply flowing from the collector electrode 11 to the emitter 12 is amplified, and the light-emitting source 2 is lightened, so that the hand of the operator is placed on the hand-held part in the specific operation process, the control switch 5 is triggered to operate, the control switch 5 is arranged on the section, far away from the operating head, of the hand-held part 8, the control switch 5 can be directly pressed by the thumb according to the action habit of people, the illumination function of the tool is triggered, the starting is very convenient, and the control switch 5 is the trigger switch, and the power supply is started by the first capacitor 3 after the control switch 5 is immediately disconnected, the first capacitor 3 has a limited amount of stored electricity, that is, the light source 2 is turned off after emitting light for a short period of time, for an operator, which is unstable in respect of the need for a lighting period, the second capacitor 4 is charged, raising its potential, due to the series relationship of the second capacitor 4 and the first capacitor 3, the first capacitor 3 is also charged, and then make it can continue to provide the required electric current of amplifier circuit, guarantee that light emitting source 2 lights constantly, combine the use scene, set up first switch 61 and second switch 62 in the lateral wall of handheld portion 8, the operator of own just needs to hold the lateral wall of handheld portion 8 with the hand when using this instrument, that is to say that the operator can light emitting source 2 very naturally in operating condition, need not carry out unnecessary operation, the going on of the operation of being convenient for like this.

Preferably, the first switch 61 and the second switch 62 are oppositely arranged on the side wall of the handheld part 8.

As can be seen from the above, the purpose of providing two switches can have a certain safety function, which is to be understood as preventing from being touched by mistake, i.e. only pressing two switches to be conductive at the same time will light the light source 2, when the tool is not required to be used during operation, it is lowered, if only one switch is likely to cause the illumination source 2 to be illuminated, either by its own weight or by squeezing from the surroundings, which is obviously not required, but two opposite switches are provided, which can be largely avoided, and the opposite switches are more convenient for the operator to exert force when in use, in order to stably hold the tool and exert better force, the opposite sides of the tool are held by the conventional operation of the experienced operator, the combination of this with the switch arrangement has the unexpected effect that the illumination is switched on.

Preferably, the surface of the hand-held portion 8 is provided with an anti-slip rubber for making the operator feel comfortable, and the anti-slip rubber has an anti-slip function to prevent the light-emitting source 2 from being turned off due to the hand sliding during the operation.

Preferably, the operating head 7 with the mount pad 81 junction is prismatic joint, mount pad 81 is inside be provided with prismatic holding tank that prismatic matches on the operating head 7, be the grafting relation between operating head 7 and the mount pad 81 promptly, of course this grafting relation is not restricted to the mode through prismatic arch and recess cooperation, can change the style of operating head 7 like this, say plum blossom, a word screwdriver, or the interior hexagonal operating tool of multiple model etc. only need a handheld portion 8 that can provide the illumination can be applicable to multiple operating tool.

In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "center", "top", "bottom", "top", "root", "inner", "outer", "periphery", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, only for the purpose of describing the present invention and simplifying the description, and 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. Where "inside" refers to an interior or enclosed area or space. "periphery" refers to an area around a particular component or a particular area.

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

In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "assembled" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In describing embodiments of the invention, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

In the description of the embodiments of the present invention, it should be understood that "-" and "-" indicate the same range of two numerical values, and the range includes the end points. For example, "A-B" means a range greater than or equal to A and less than or equal to B. "A to B" means a range of not less than A and not more than B.

In the description of the embodiments of the present invention, the term "and/or" herein is only one kind of association relationship describing the associated object, and means that there may be three kinds of relationships, for example, a and/or B, and may mean: a exists alone, A and B exist simultaneously, and B exists alone.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (9)

1. A control circuit, characterized by: the power supply comprises a power supply, a triode, a luminous source, a first capacitor and a second capacitor, wherein the power supply current sequentially flows from the positive electrode to the luminous source and the second capacitor which are connected in parallel through a collector and an emitter of the triode, and a branch circuit where the second capacitor is located is provided with a switch; the first capacitor and the second capacitor are connected in series; the power supply charges the first capacitor through the control switch, and the first capacitor is connected with the base electrode of the triode.

2. A control circuit according to claim 1, wherein the switch comprises a first switch and a second switch connected in series.

3. The control circuit of claim 1, wherein said light source is a light emitting diode.

4. A control circuit according to claim 3, wherein the light source is a plurality of series-connected light emitting diodes.

5. A control circuit according to claim 1, wherein the control switch is a trigger switch.

6. A hand tool comprising a control circuit according to any one of claims 1 to 5, including a hand-held portion and an operating head, the operating head being connected to a mounting in the hand-held portion, the light source being provided at an end of the hand-held portion adjacent the operating head, the control switch being provided at an end of the hand-held portion remote from the operating head, the first switch and the second switch being provided on a side wall of the hand-held portion.

7. A hand tool according to claim 6 wherein the first and second switches are oppositely disposed on the hand grip side wall.

8. A hand tool according to claim 6, wherein the grip surface is provided with anti-slip rubber.

9. A hand tool according to claim 6, wherein the joint between the operating head and the mounting seat is a prismatic joint, and a prismatic receiving groove matched with the prism on the operating head is arranged in the mounting seat.

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