CN212033822U

CN212033822U - Pre-charging structure of integrated electronic switch

Info

Publication number: CN212033822U
Application number: CN202020847523.0U
Authority: CN
Inventors: 郑春开
Original assignee: Kedu Electric Co Ltd
Current assignee: Kedu Electric Co Ltd
Priority date: 2020-05-19
Filing date: 2020-05-19
Publication date: 2020-11-27
Anticipated expiration: 2030-05-19

Abstract

The utility model discloses a pre-charging structure of an integrated electronic switch, which comprises a switch shell, a driving frame, a PCB (printed circuit board) assembly and a charging control structure, wherein the PCB assembly comprises a PCB component and a capacitor, and the PCB component is connected with a battery pack; the charging control structure is used for controlling the battery pack to charge the capacitor and comprises a connecting body and a charging track structure, wherein the connecting body is arranged on the driving frame in a linkage mode, and the charging track structure is arranged on the PCB part along the moving path of the connecting body; by adopting the technical scheme, when the driving frame is at the initial position, the charging control structure does not work by electrifying, the battery pack at the moment does not charge the capacitor, and when the driving frame moves down for a certain distance and reaches the switch-on position, the charging control structure is switched on, the battery pack at the moment continuously charges the capacitor, the capacitor voltage is kept unchanged under the working state of the switch, the filtering effect of the capacitor can be reliably realized, the contact mechanism of the switch is protected, and the use performance of the product is improved.

Description

Pre-charging structure of integrated electronic switch

Technical Field

The utility model relates to a switch technical field, concretely relates to integrated electronic switch's precharge structure.

Background

The pre-charging structure of the integrated electronic switch is a switch which integrates a switch mechanical part and a circuit control system part into a whole and is used for controlling the electric tool to work, common electric tools comprise an electric drill, an electric grinding machine, an electric wrench, an electric hammer, an impact electric drill, a concrete vibrator, an electric planer and the like, and the functions of starting and stopping a motor and adjusting the rotating speed or the steering of the electric tool can be realized through the integrated control switch.

The existing integrated control switch respectively realizes the functions of direction adjustment and speed adjustment through a reversing operation mechanism and a speed adjustment operation mechanism, the switch conducts a circuit through a PCB part in the speed adjustment or direction adjustment process through an electric brush part in contact with the switch, different electromotive forces can be generated by the switch during the power-on work, the capacitor with the filtering function on the PCB part is generally utilized for filtering, the effect of a rectifying circuit is achieved, the capacitance required by the capacitor is large, and the capacitor is required to be frequently used, the voltage and the capacity of the capacitor are maintained to be stable in the using process so as to not influence the filtering effect, and thus, a structure is urgently needed to be designed to ensure that the capacitor is charged.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art not enough to a charge electric capacity, maintain electric capacity voltage stability in frequent use, guarantee the integrated electronic switch's of filtering effect structure of charging in is provided.

In order to solve the above technical problem, the utility model provides an integrated electronic switch's precharge structure, include:

a switch housing having an accommodating chamber;

the driving structure comprises a driving frame which is stressed to reciprocate and arranged on the switch shell;

the PCB assembly comprises a PCB component arranged in the switch shell and at least one capacitor arranged on the PCB component, and the PCB component is connected with the battery pack; further comprising:

the charging control structure is arranged between the driving frame and the PCB component and used for controlling the battery pack to charge the capacitor, and comprises a connecting body and a charging track structure, wherein the connecting body is arranged on the driving frame in a linkage manner, and the charging track structure is arranged on the PCB component along the moving path of the connecting body; the driving frame drives the connecting body to reciprocate on the charging track structure, and the connecting structure is provided with an initial position for disconnecting the battery pack from the capacitor and a connection position for keeping the battery pack and the capacitor charged.

As a preferable scheme, the charging track structure includes a first conductor, a second conductor and a third conductor which are sequentially arranged on the top surface of the PCB at intervals, one end of the connector is slidably connected to the first conductor, and the other end of the connector is slidably switched between the second conductor and the third conductor, the driving frame drives the connector to connect the first conductor and the second conductor when in an initial position, and drives the connector to connect the first conductor and the third conductor when in a switch-on position.

Preferably, a main contact mechanism connected to the driving mechanism is installed in the switch housing, and the connecting body slides on the first conductor and the third conductor for a certain distance to enable the driving mechanism to drive the main contact mechanism to be connected.

As a preferable scheme, an electronic switch is arranged on the bottom surface of the PCB component, and the electronic switch is turned on when the driving frame is reset from the on position to the initial position, and maintains the battery pack and the charging loop of the capacitor in a conducting state within a preset time.

Preferably, the driving rack includes a movable seat disposed thereon, and a mounting groove adapted to mount the connector is disposed on a side of the movable seat facing the PCB.

As a preferable scheme, the connecting body is a metal conductor fixed to the mounting groove, and two ends of the connecting body are respectively provided with at least one contact finger structure which is bent and extended towards one side of the charging track structure.

Preferably, the driving structure comprises a button part mounted at the top of the driving frame, and a return spring sleeved at the bottom of the driving frame, and the driving frame is reset from the on position to the initial position under the action of the return spring.

As a preferable scheme, the switch housing includes a main housing and a cover, the accommodating cavity includes a first cavity formed by the main housing and the cover being fastened together to form a closed enclosure, and a second cavity openly disposed at one side of the first cavity, the PCB board component includes a first portion accommodated in the first cavity, and a second portion accommodated in the second cavity, and the charging control structure is disposed in the first cavity.

As a preferred scheme, the battery pack is installed in the battery clamp and connected with the PCB component through a wire, and the charging control structure further comprises a charging loop arranged on the PCB component and used for connecting the battery pack with the capacitor.

Compared with the prior art, the technical scheme of the utility model have the following advantage:

1. the utility model provides an integrated electronic switch's precharge structure, through the drive frame drives the connector is in the structural reciprocating motion of doing of orbit of charging, thereby come control to realize the battery package through the concrete shift position that changes the connector and charge to electric capacity, when the drive frame is in the initial position, for switch non-energization work, battery package this moment just also does not carry out the operation of charging to electric capacity, and when the drive frame moves down and reachs the switch-on position, for the switch already energized work, battery package this moment constantly charges to electric capacity, guarantee to maintain electric capacity voltage unchangeable under switch operating condition, and stability is good, and can reliably realize the filtering action of electric capacity, thereby play the rectifier circuit effect, be favorable to promoting the performance of product.

2. The utility model provides an integrated electronic switch's precharge structure charges to electric capacity through the battery package for electric capacity reaches a stable voltage, when contact mechanism switches on, has reduced contact mechanism's surge current, has protected and has moved, quiet main contact, has prolonged the life of switch.

3. The utility model provides an integrated electronic switch's precharge structure, the action frame drives when initial position the first electric conductor and second electric conductor are connected to the connector, and at this moment the control structure that charges is in the signal off state, can not trigger the battery package and charge to the battery, and when the connector slides to the third electric conductor from the second electric conductor, for the action frame when the on position is connected to the connector first electric conductor and third electric conductor are connected to the connector, and at this moment the control structure that charges is in the signal on state, thereby triggers the battery package charges to the battery, reasonable in design, the cooperation is reliable.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a precharge structure of an integrated electronic switch provided in the present invention;

fig. 2 is a schematic perspective view of a precharge structure of the integrated electronic switch according to the present invention;

fig. 3 is a schematic diagram of a split structure of a pre-charging structure of the integrated electronic switch according to the present invention;

fig. 4 is a schematic view of the mounting structure of the driving frame and the connecting body of the present invention;

fig. 5 is a schematic structural diagram of a PCB board component according to the present invention;

description of reference numerals: 1-switch shell, 11-main shell, 12-sealing cover, 13-first cavity, 14-second cavity, 2-driving structure, 20-mounting groove, 21-driving frame, 22-moving seat, 23-button component, 24-reset spring, 3-PCB component, 31-controller, 4-capacitor, 5-connector, 6-charging track structure, 61-first conductor, 62-second conductor, 63-third conductor, 7-electronic switch, 8-battery clamp and 9-main contact mechanism.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "first", "second" and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements.

Example 1

The present embodiment is described in detail below with reference to the accompanying drawings:

the present embodiment provides a pre-charge structure of an integrated electronic switch as shown in fig. 1-5, comprising:

a switch housing 1 having an accommodating chamber;

the driving structure 2 comprises a driving frame 21 which is stressed to reciprocate and arranged on the switch shell;

the PCB component comprises a PCB component 3 arranged in the switch shell 1 and at least one capacitor 4 arranged on the PCB component, and the PCB component 3 is arranged outside the switch shell and connected with a battery pack; further comprising:

the charging control structure is arranged between the driving frame 21 and the PCB component 3 and used for controlling the battery pack to charge the capacitor 4, and comprises a connecting body 5 which is arranged on the driving frame 21 in a linkage manner, and a charging track structure 6 which is arranged on the PCB component 3 along the moving path of the connecting body 5; the driving frame 21 drives the connecting body 5 to reciprocate on the charging track structure 6, and has an initial position for disconnecting the battery pack from the capacitor 4 and a connection position for keeping the battery pack and the capacitor 4 charged.

In the above embodiment, the driving frame 21 drives the connecting body 5 to reciprocate on the charging track structure 6, so as to control and realize that the battery pack charges the capacitor by changing the specific moving position of the connecting body 5, when the driving frame 21 is at the initial position, the charging control structure is not powered on to work, the battery pack does not charge the capacitor at the moment, and when the driving frame 21 moves down for a certain distance and reaches the switching-on position, the charging control structure is powered on to work, the battery pack charges the capacitor continuously at the moment, so that the capacitor voltage is kept unchanged in the switching working state, the stability is good, the filtering effect of the capacitor can be realized reliably, the rectifier circuit effect is achieved, and the use performance of the product is improved.

The specific arrangement of the charging trace structure is described in detail below with reference to fig. 3-5:

the charging track structure 6 comprises a first conductor 61, a second conductor 62 and a third conductor 63 which are sequentially arranged on the top surface of the PCB component 3 at intervals, one end of the connecting body 5 is always connected with the first conductor 61 in a sliding way, the other end of the connecting body is switched between the second conductor 62 and the third conductor 63 in a sliding way, the driving frame 21 drives the connecting body 5 to connect the first conductor 61 and the second conductor 62 at the initial position, the charging control structure 6 is in a signal off state and cannot connect a charging loop between the battery pack and the battery, the battery pack cannot be triggered to charge the battery, the driving frame 21 drives the connecting body 5 to connect the first conductor 61 and the third conductor 63 at the on position, the charging control structure 6 is in a signal on state and can connect the charging loop between the battery pack and the battery, therefore, the battery pack is triggered to charge the battery, the design is reasonable, and the matching is reliable.

The integrated control switch of this embodiment further includes a main contact mechanism 9 installed in the switch housing and connected to the driving mechanism 2, wherein the driving mechanism 2 is configured to drive the main contact mechanism 9 to perform an on-off operation, specifically, the driving frame 21 drives a moving contact and a static contact in the main contact mechanism 9 to contact when moving downward, so as to implement an on-state operation of the main contact mechanism, and drives the moving contact and the static contact in the main contact mechanism 9 to separate when moving upward, so as to implement an off-state operation of the main contact mechanism, therefore, the driving frame 21 can respectively drive the main contact mechanism 9 and the charging control mechanism to operate during the reciprocating movement, when the driving frame 21 is at an initial position, the connector 5 is connected to the first conductor and the second conductor, the main contact mechanism is not on, but moves downward for a distance with the driving frame 21, after the connecting body 5 slides for a certain distance on the first electric conductor and the third electric conductor, the driving structure 2 drives the main contact mechanism 9 to be switched on, so that the battery pack starts to continuously charge the capacitor before the main contact mechanism 9 is switched on, and it is understood that surge current generated by switching on the moving contact and the static contact of the main contact mechanism 6 passes through the main contact mechanism, and the capacitor is charged in advance by the battery pack, so that the surge current passing through the main contact mechanism is reduced, and the contact mechanism is protected.

In this embodiment, as shown in fig. 3 and 4, an electronic switch 7 is disposed on the PCB component 3, the electronic switch 7 is turned on when the driving rack 21 is reset from the on position to the initial position, and is configured to maintain a charging loop between the battery pack and the capacitor 4 in an on state within a preset time, wherein the battery pack is mounted in the battery clamp 8 and connected to the PCB component 3 through a conducting wire (the battery pack is not shown in the drawings), and the charging loop is disposed on the PCB component and is configured to connect the battery pack and the capacitor. The advantage of this design is that when the power tool is frequently switched off, i.e. when the integrated control switch needs frequent on-off operation, the electronic switch 7 is maintained in the on state for a predetermined time, so that the charging circuit between the battery pack and the capacitor is not immediately disconnected, but is disconnected after the delay time is over, and the voltage of the capacitor is still unchanged, thereby ensuring that the capacitor is not recharged when the switch is frequently switched off in a short time, reducing the burning of the surge current to the main contact during charging, protecting the main contact, and prolonging the service life of the switch.

The specific arrangement of the driving structure and the connecting body will be described in detail below with reference to fig. 1 to 4:

the driving frame 21 includes a moving seat 22 disposed thereon, one side of the moving seat 22 facing the PCB component 3 is provided with a mounting groove 20 adapted to mount the connector 5, the connector 5 is a metal conductor fixed on the mounting groove 20, two ends of the connector are respectively provided with at least one finger structure extending to one side of the charging track structure 6 in a bending manner, the finger structures are in sliding contact with a plurality of conductors to generate a control electrical signal for controlling the battery pack to charge or not charge the capacitor 4, the contact stability is good, the PCB component further includes a controller 31 disposed on the PCB component, the controller can receive the control electrical signal and control the electronic switch to operate, if the connector 5 slides from a third conductor to a second conductor, the electronic switch 7 will open and connect the charging loop to continue to maintain for a period of time, the controller 31 has a data information processing function, and centrally controls other electronic components through a protocol or a circuit with the controller as a core.

The driving structure 2 comprises a button part 23 mounted on the top of the driving frame 21 and a return spring 24 sleeved on the bottom of the driving frame 21, the return spring 24 applies an elastic force to the driving frame 21 to move towards the button part 23, and the driving frame 21 is reset from a switch-on position to an initial position under the action of the return spring 24, so that the reset function of the driving frame 21 is realized.

As shown in fig. 1-2, the switch housing 1 includes a main housing 11 and a cover 12, the accommodating cavity comprises a first closed cavity 13 formed by buckling the main shell 11 and the cover 12, and a second chamber 14 openly provided at one side of the first chamber 13, the PCB part 3 including a first portion received in the first chamber 13, and a second portion housed in the second compartment 14, the cover 12 also having a cover plate that can extend into the second compartment, the cover plate is used for covering the power switch on the second part, the cover plate and the sealing cover are integrally connected or separately arranged, the charging control structure 6 and the driving structure 2 are arranged in the first chamber 13, respectively, the charging track structure is arranged on a first portion of the PCB board component 3, and the capacitor 4 is arranged on a second portion of the PCB board component 3.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. A pre-charge structure for an integrated electronic switch, comprising:

a switch housing (1) having an accommodating cavity;

the driving structure (2) comprises a driving frame (21) which is stressed to reciprocate and arranged on the switch shell;

the PCB assembly comprises a PCB component (3) arranged in the switch shell (1) and at least one capacitor (4) arranged on the PCB component, and the PCB component (3) is connected with a battery pack; further comprising:

the charging control structure is arranged between the driving frame (21) and the PCB component (3) and used for controlling the battery pack to charge the capacitor (4), and comprises a connecting body (5) which is arranged on the driving frame (21) in a linkage manner and a charging track structure (6) which is arranged on the PCB component (3) along the moving path of the connecting body (5); the driving frame (21) drives the connecting body (5) to reciprocate on the charging track structure (6), and the charging track structure is provided with an initial position for disconnecting the battery pack from the capacitor and a connection position for keeping the battery pack and the capacitor charged.

2. A pre-charge structure for an integrated electronic switch according to claim 1, characterized in that: the charging track structure (6) comprises a first conductor (61), a second conductor (62) and a third conductor (63) which are sequentially arranged on the top surface of the PCB component (3) at intervals, one end of the connecting body (5) is connected to the first conductor (61) in a sliding mode, the other end of the connecting body is switched between the second conductor (62) and the third conductor (63) in a sliding mode, the driving frame (21) enables the connecting body (5) to be connected with the first conductor (61) and the second conductor (62) when in the initial position, and enables the connecting body (5) to be connected with the first conductor (61) and the third conductor (63) when in the connection position.

3. A pre-charge structure for an integrated electronic switch according to claim 2, characterized in that: and a main contact mechanism (9) connected with the driving structure (2) is arranged in the switch shell, and the connecting body (5) slides on the first conductor and the third conductor for a certain distance to enable the driving structure (2) to drive the main contact mechanism (9) to be switched on.

4. A pre-charge structure for an integrated electronic switch according to claim 2, characterized in that: an electronic switch (7) is arranged on the PCB component (3), and when the driving frame (21) is reset to the initial position from the switch-on position, the electronic switch (7) maintains the charging loop between the battery pack and the capacitor to be in the switch-on state within the preset time.

5. The pre-charge structure of an integrated electronic switch of claim 4, wherein: the driving frame (21) comprises a moving seat (22) arranged on the driving frame, and one side, facing the PCB component (3), of the moving seat (22) is provided with a mounting groove (20) suitable for mounting the connecting body (5).

6. The pre-charge structure of an integrated electronic switch of claim 5, wherein: the connecting body (5) is a metal conductor fixed on the mounting groove (20), and two ends of the connecting body are respectively provided with at least one contact finger structure which extends towards one side of the charging track structure (6) in a bending way.

7. Pre-charge structure of an integrated electronic switch according to any of claims 1-6, characterized in that: the driving structure (2) comprises a button component (23) arranged at the top of the driving frame (21) and a return spring (24) sleeved at the bottom of the driving frame (21), and the driving frame (21) is reset from a switch-on position to an initial position under the action of the return spring (24).

8. A pre-charge structure for an integrated electronic switch according to claim 7, characterized in that: the switch shell (1) comprises a main shell (11) and a cover (12), the accommodating cavity comprises a first cavity (13) and a second cavity (14), the first cavity (13) is closed by buckling the main shell and the cover, the second cavity (14) is arranged on one side of the first cavity (13) in an open mode, the PCB component (3) comprises a first portion and a second portion, the first portion is accommodated in the first cavity (13), the second portion is accommodated in the second cavity (14), and the charging control structure is arranged in the first cavity (13).

9. The pre-charge structure of an integrated electronic switch of claim 4, wherein: the battery pack is arranged in the battery clamp (8) and is connected with the PCB component (3) through a lead, and the charging loop is arranged on the PCB component (3).