CN212721427U

CN212721427U - Laser level meter

Info

Publication number: CN212721427U
Application number: CN202021727439.1U
Authority: CN
Inventors: 刘丹华; 魏广东; 顾金发
Original assignee: Positec Power Tools Suzhou Co Ltd
Current assignee: Positec Power Tools Suzhou Co Ltd
Priority date: 2020-08-18
Filing date: 2020-08-18
Publication date: 2021-03-16
Anticipated expiration: 2030-08-18

Abstract

The utility model discloses a laser level meter, include: a housing; the movement assembly is arranged in the shell and comprises a plurality of laser assemblies, each laser assembly comprises a laser source and a conical mirror, and a laser surface vertical to the laser beam is formed after the laser beam emitted by the laser source is reflected by the conical mirror; a battery pack for serving as a power supply source; the control device comprises a controller, a battery detection unit and a function control unit, wherein the battery detection unit and the function control unit are electrically connected with the controller; the battery detection unit detects the state parameters of the battery pack in real time, and when the state parameters of the battery pack are smaller than a first preset threshold value or reach a second preset threshold value, the controller controls the function control unit to disconnect the laser assembly from the battery pack. The utility model discloses can protect the power for the power is not fragile, thereby prolongs the life-span of machine.

Description

Laser level meter

Technical Field

The utility model relates to a spirit level technical field, in particular to laser level meter.

Background

The laser level meter is mainly applied to the engineering fields of construction, decoration and the like and is used as an auxiliary tool for horizontal or vertical alignment during construction. Current classes of laser levels include five-line levels, 3D laser levels, and the like. However, the laser level at present has some defects, and further improvement and optimization are needed.

For example, for a five-line level, it mainly consists of: a cylindrical shell, and five laser components, a power supply and the like which are uniformly distributed in the shell. The bottom of the housing is supported on the ground by a plurality of support posts. Overall, the overall body of the five-line level is large. When the laser module is used, the five laser modules respectively shoot transverse line laser or vertical line laser. The height of the transverse line laser shot by the existing five-line level meter from the ground is higher, the approach is poor, the use scene is limited more, and particularly the working scene of floor tiles can not be met.

For a 3D laser level, the whole body is in the shape of a cube, which includes a plurality of laser components, a power supply, and the like. Wherein, the distance of the laser component near the bottom of the casing and the bottom of the casing is smaller, so the emitted laser coil can be close to the ground and can be applied to tile, and the laser coils emitted by other laser components can be applied to tile. However, the power supply of the 3D laser level is a rechargeable battery, and many batteries are easy to over-discharge or over-charge during use, which results in power supply damage and short machine life.

In view of the above, there is a need for improved optimization of existing laser levels to overcome at least one of the problems of the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a laser level meter can the protection power for the power is not fragile, thereby prolongs the life-span of machine.

The above object of the present invention can be achieved by the following technical solutions:

a laser level comprising:

a housing;

the movement assembly is arranged in the shell and comprises a plurality of laser assemblies, each laser assembly comprises a laser source and a conical mirror, and a laser surface vertical to the laser beam is formed after the laser beam emitted by the laser source is reflected by the conical mirror;

a battery pack for serving as a power supply source;

the control device comprises a controller, a battery detection unit and a function control unit, wherein the battery detection unit and the function control unit are electrically connected with the controller; the battery detection unit detects the state parameters of the battery pack in real time, and when the state parameters of the battery pack are smaller than a first preset threshold value or reach a second preset threshold value, the controller controls the function control unit to disconnect the laser assembly from the battery pack.

In a preferred embodiment, the function control unit includes an on-off component and a power supply circuit connected to the on-off component, when the voltage of the battery pack is smaller than a preset low-voltage protection value, the on-off component disconnects the power supply circuit, and the battery pack stops supplying power to the laser assembly; or when the voltage of the battery pack reaches a preset overcharge protection value, the on-off part disconnects the power supply circuit, so that an external power supply stops charging the battery pack.

In a preferred embodiment, the function control unit includes a programmable controller, and when the battery detection unit detects that the voltage of the battery pack is smaller than a preset low-voltage protection value, the programmable controller controls the battery pack to stop supplying power to the laser assembly; or when the battery detection unit detects that the voltage of the battery pack reaches a preset overcharge protection value, the programmable controller controls an external power supply to stop charging the battery pack.

In a preferred embodiment, the battery detection unit includes a temperature detector for detecting the temperature of the battery pack, the temperature detector is electrically connected to the controller, and when the temperature detector detects that the temperature of the battery pack reaches a preset temperature value, the controller controls the function control unit to disconnect the laser assembly from the battery pack.

In a preferred embodiment, the battery detection unit includes a current detector for detecting a current level of the battery pack, the current detector is electrically connected to the function control unit, and when a current value detected by the current detector deviates from a predetermined current range, the controller controls the function control unit to electrically disconnect the laser assembly from the battery pack.

In a preferred embodiment, a user operation unit is disposed on the housing for receiving a control command input by a user, and the function control unit can control the laser assembly to operate in a manner corresponding to the control command according to the control command input by the user.

In a preferred embodiment, the laser level further comprises a remote control module comprising a remote control device separate from the housing, the remote control device comprising an input unit, a signal processor, a signal transmitter, the control device comprising a signal receiver in signal interfacing with the signal transmitter; and after a control command input by a user on the input unit passes through the signal processor, the signal transmitter sends a control signal to the signal receiver to control the laser assembly to work in a mode corresponding to the control command.

In a preferred embodiment, the laser level further includes an alarm device, the movement assembly further includes a pendulum that can be switched between a first state and a second state, and a movement base that is fixed relative to the housing, the pendulum is electrically separated from the movement base when the pendulum is in the first state, the pendulum and the movement base can be electrically connected when the pendulum is in the second state, and the alarm device can be triggered.

In a preferred embodiment, when the pendulum is in the first state, the pendulum is fixed relative to the movement base; when the pendulum is in a second state, the pendulum can rotate relative to the movement base, and when the inclination angle between the pendulum and the movement base exceeds a preset angle, the pendulum is electrically connected with the alarm device so as to contact the alarm device.

In a preferred embodiment, the casing includes a first casing for accommodating the battery pack and a second casing for accommodating the movement assembly, and a partition is disposed between the first casing and the second casing and recessed in the first casing and the second casing.

In a preferred embodiment, the laser level further includes a power supply connector for connecting an external power source, the power supply connector is integrated at one end of the battery detection unit, the partition is a transition housing located between the first housing and the second housing, the battery detection unit is located in the transition housing, and the transition housing is provided with a mounting opening for electrically connecting the external connector and the power supply connector.

In a preferred embodiment, the movement assembly comprises a movement support having opposite top and bottom ends, and the battery detection unit is disposed at any one of the following positions: the top of core support, the bottom of core support, accept the inner wall of the casing of core assembly.

According to the technical scheme provided by the embodiment of the application, the laser level meter provided by the application is mainly a 3D laser level meter, the controller is arranged in the control device, and the battery detection unit and the function control unit are electrically connected with the controller, wherein the battery detection unit can detect the state parameters (such as one or the combination of the voltage, the current, the temperature and the like) of the battery pack in real time, when the state parameters of the battery pack are smaller than a first preset threshold or reach a second preset threshold, the controller controls the function control unit to disconnect the electric connection between the laser assembly and the battery pack, so that the power-off protection is realized, the over-discharge or over-charge problem during the charging of the battery pack can be avoided, the power supply can be protected, the power supply is not easy to damage, and the service life of a machine is prolonged.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1a is a schematic diagram of a laser level provided in one embodiment of the present invention;

FIG. 1b is a front view of a laser level provided in one embodiment of the present invention;

FIG. 1c is a top view of a laser level provided in one embodiment of the present invention;

FIG. 1d is a left side view of a laser level provided in one embodiment of the present invention;

FIG. 2 is a schematic diagram of the operating principle of the laser assembly of the laser level provided in one embodiment of the present invention;

FIG. 3 is an exploded view of the core components of a laser level provided in some embodiments of the present invention;

fig. 4 is an exploded view of a laser level provided in some embodiments of the present invention;

FIG. 5 is a block diagram illustrating the connection of various electronic components of a laser level provided in one embodiment of the present invention;

fig. 6 is a logic diagram of the operation of the battery test unit provided in one embodiment of the present invention;

fig. 7 is a logic diagram of the operation of a function control unit provided in an embodiment of the present invention;

fig. 8 is a cross-sectional view for illustrating the distribution positions of the battery detection units provided in the embodiment of the present invention;

fig. 9 is a longitudinal sectional view for illustrating the distribution positions of the battery detection units provided in the embodiment of the present invention;

FIG. 10 is a schematic diagram of a preliminary exploded view of a laser level with a battery detection unit at the top provided in one embodiment of the present invention;

FIG. 11 is a longitudinal cross-sectional view of a pendulum of a laser level provided by the present invention in a first state;

FIG. 12 is a cross-sectional view of a pendulum of a laser level provided by the present invention in a first state;

FIG. 13 is a longitudinal cross-sectional view of the pendulum of a laser level provided by the present invention in a second state;

fig. 14 is a cross-sectional view of a pendulum of a laser level provided by the present invention in a second state.

Reference numerals:

1. a laser assembly; 101. a laser source; 102. a collimating mirror; 103. a conical mirror; 104. initial laser; 105. projecting laser; 106. a laser plane; 10. an axis; 2. a housing; 201. an upper housing; 202. a lower housing; 21. a first housing; 22. a second housing; 23. a partition portion; 24. An operating member; 25. a housing base; 20. a movement assembly; 26. a pendulum bob; 27. a machine core base; 28. a transmission member; 29. a signal switch triggering device; 3. a battery pack; 31. an electrode holder; 32. a battery assembly; 4. a power supply connector; 50. a battery detection unit; 51. an adapter plate; 52. a function control unit; 53. a mode switch; 6. and a window assembly.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of 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. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

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. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1a to 4, in an embodiment of the present application, a laser level is provided, which mainly includes: the machine comprises a shell 2, a movement assembly 20 arranged in the shell 2, a battery pack 3 used as a power supply source and a control device. In addition, the laser level may also include a power connector 4 for connecting to an external power source.

As shown in fig. 3 or fig. 4, in the present embodiment, the casing 2 may include an upper casing 201 and a lower casing 202 that are butted. The upper housing 201 and the lower housing 202 can be detachably connected to facilitate subsequent inspection and maintenance. In addition, the laser level may also include a housing base 25 located at the bottom of the housing 2.

As shown in fig. 2, in the present embodiment, the deck assembly 20 may include several laser assemblies 1. The laser assembly 1 comprises a laser source 101, a cone mirror 103. When the laser beam emitted by the laser source 101 is reflected by the cone mirror 103, a laser plane 106 perpendicular to the laser beam is formed. Specifically, each laser assembly 1 may include a laser source 101, a collimating mirror 102, and a conical prism (i.e., a conical mirror 103) disposed coaxially 10. The laser source 101 is configured to emit an initial laser beam 104, the initial laser beam 104 is scattered, and a center of the initial laser beam 104 is located on the axis 10. The initial laser light 104 is projected onto the collimating mirror 102 to form a parallel beam of projected laser light 105, and the projected laser light 105 extends along the axis 10. When the projection laser 105 is projected onto the conical reflecting surface of the conical mirror 103, it is reflected toward the periphery, forming a laser surface 106 perpendicular to the axis 10 (i.e., the central line of the conical mirror 103).

As shown in fig. 4, in this embodiment, the laser level may further comprise a window assembly 6 that mates with the laser assembly 1. Specifically, the number and positions of the laser assemblies 1 correspond to those of the window assemblies 6. Each window assembly 6 may include four projection windows, which are four windows disposed around the laser assembly 1, respectively, up, down, left, and right. The projection window of the window assembly 6 may be directly fixed to the cabinet 2. Furthermore, in some embodiments, the window assembly 6 may also be provided with a mount for mounting a projection window. For each projection window there corresponds a longitudinal extension. The extending directions of two adjacent projection windows in the four projection windows are designed in an angle mode and can be set to be approximately 90 degrees. The projection window may be made of a transparent material such as glass. The reflected light formed by the reflection by the cone mirror 103 is transmitted through the projection window and is diffused all around. If shielding planes are wound around the laser component 1, the laser light passing through the projection window can form a line on each of the four shielding planes and the four straight lines are connected end to form a closed loop, and the shape of the closed loop depends on the shielding planes and can be rectangular, circular or other shapes.

In the present embodiment, the number of the laser modules 1 may be set according to actual detection requirements, and may be 1 group, 2 groups, 3 groups, 4 groups, or the like. Referring to fig. 1b, fig. 1c and fig. 1D, for example, when the number of the laser assemblies 1 is 3, three laser assemblies 1 with mutually perpendicular axes 10 are disposed on the laser level, and three window assemblies 6 are correspondingly disposed on the laser level to form a 12-line 3D laser level. Wherein the three laser assemblies 1 are conformal to form three mutually perpendicular laser planes 106. The three laser planes 106 include: a vertically oriented laser plane 106 and a horizontally oriented laser plane 106.

In the present embodiment, the battery pack 3 is used as a power supply source for supplying power to a component that consumes power during operation. For example, the battery pack 3 may be electrically connected to the laser module 1 to supply power to the laser module 1. The battery pack 3 is specifically a rechargeable battery pack, and when the electric quantity in the battery pack 3 is consumed to a certain degree, the battery pack needs to be charged in time. In order to ensure that the battery pack 3 has a long service life, theoretically, the voltage of the battery pack 3 cannot exceed a preset overcharge protection value when the battery pack 3 is charged, and cannot be lower than a preset low-voltage protection value when the battery pack 3 is used. The preset overcharge protection value and the preset low-voltage protection value may be set according to the use environment, performance requirements, and the like of the specific battery pack 3, and the corresponding specific numerical values are not specifically limited herein.

In this embodiment, the power supply connector 4 may be connected to an external power source to supply power to the working components such as the laser module 1 of the laser level that require power, or to charge the battery pack 3 of the laser level while supplying power to the laser module 1 of the laser level. In particular, the power connector 4 may be used to charge the battery pack 3, or may be used to directly power the laser module 1 of the laser level. The number of the plug-in units may be plural, or the power supply connector 4 having plural functions may be integrated into one. The specific form of the power supply connector 4 is not limited in this application, and for example, the power supply connector 4 may be in the form of a USB interface, a Type-C interface, a 30-pin charging interface, or a lighting interface. When the power supply connector 4 is used for realizing an electrical connection function, a data transmission function can be integrated. For example, when the control device of the laser level and an external mechanism realize data exchange or one-way transmission, the power supply connector 4 can be used for realizing transmission.

As shown in fig. 5, in the present embodiment, the control device may include: the controller, the battery detection unit 50 electrically connected with the controller, and the function control unit 52.

The battery detection unit 50 is used for detecting the state parameter of the battery pack 3 in real time, and when the state parameter of the battery pack 3 is smaller than a first preset threshold or reaches a second preset threshold, the control unit controller control function control unit 52 is started to disconnect the laser assembly from the electrical connection with the battery pack, so that power-off protection is realized. Wherein, the state parameter can be at least one of voltage, current and temperature. When the state parameter is a voltage, the first preset threshold is a preset low protection value, and the second preset threshold is a preset high protection value, specifically, a preset voltage overcharge protection value. In the following embodiments, the state parameter is mainly used as an example for explanation, and other cases can be referred to for analogy, and detailed description thereof is omitted here.

Specifically, as shown in fig. 6, after the battery detection unit 50 is powered on, it is first determined to which status signal the current signal belongs. In the first case, if the current signal is a discharging signal, further detecting whether there is a fault signal; the battery pack begins to discharge on the premise that no fault signal is detected. If the fault signal is detected, an alarm reminding signal is output. In the discharging process of the battery pack, the battery detection unit 50 detects whether a fault occurs in real time, if not, the discharging state is continued, and if so, the discharging is disconnected, and the whole machine enters a standby state.

When the whole machine enters a standby state, whether a discharge signal exists can be continuously reduced, namely whether a use requirement exists is detected. If the discharge signal is detected, the first condition is determined whether the discharge signal exists, and if the discharge signal exists, a series of detection processes are performed. The usage requirement may be specifically a diagonal line for shutdown.

In a second case, if the current signal is a charging signal, it is further detected whether there is a fault signal. And if the fault signal exists, outputting an alarm reminding signal. If there is no fault signal, charging of the batteries in the battery pack is initiated. The battery test unit 50 also tests whether there is a fault signal in real time during the charging process. If there is no fault signal, the charging state is maintained. If the fault signal exists, the charging is cut off, and the whole machine enters a standby state. When the battery is fully charged, the charging is automatically cut off, and the whole machine enters a standby state. When the whole machine enters a standby state, the charging signal can be continuously detected, when the charging signal is judged to exist, the laser level meter is activated to be charged, and whether the fault signal exists or not and the subsequent working process of the fault signal are subsequently executed. In the third case, if the battery detection unit 50 is initially powered on and does not detect any operation signal, the whole machine is kept in a standby state.

The battery detection unit 50 is further connected with a battery status indication unit for indicating the battery status in the current battery pack. For example, the battery status indicating unit may be a light emitting diode, involving both charging and discharging states. In the charging state, three cases are included, which are: during charging, flashing green light; when the lamp is fully charged, the lamp is normally on for green; failure, flashing red light; in the discharge state, three conditions are included: when the power is full, the lamp is turned on; under-voltage, red light is lighted; failure, flashing red light. Of course, the indication signals of the battery status indication unit corresponding to different situations in the charging status and the discharging status may be adaptively selected according to the actual application scenario, and the present application is only an example and is not particularly limited.

In the present embodiment, the controller and the function control unit 52 may be integrated on the same main board, but may be separately provided. In addition, the battery detection unit 50 may be provided separately, or may be integrated with the controller and function control unit 52 on the same main board. Specifically, the specific arrangement of the controller, the function control unit 52 and the battery detection unit 50 may be adapted according to the actual installation environment, and the application is not limited in particular.

In the present embodiment, the function control unit 52 can control on/off, intensity, and intensity of the laser components, color of the laser light, and the like. In a specific use, the function control unit 52 obtains a control instruction input by a user through the user operation unit, and controls the laser assembly to implement function switching according to the control instruction.

Referring to fig. 7, specifically, after the function control unit 52 is powered on, it first determines whether there is a fault signal, and if so, the whole machine enters a standby state. If not, then enter the mode of beginning working, detect whether there is the laser tube signal of opening, if yes, then the laser tube is bright. At this time, the function control unit 52 also detects whether there is a fault in real time, and if there is a fault, the laser tube is disconnected, and the whole machine enters a standby state. And subsequently detecting whether a signal for starting the working mode exists or not, and if so, starting to enter the working mode. After entering the working mode, if the laser tube signal is not detected, the laser tube is in the off state, and then whether a fault signal exists is further detected, if the fault signal exists, the whole machine enters the standby state, and if the fault signal does not exist, the off state of the laser tube is maintained.

The control device may also be provided with a memory unit, which may be provided in the battery detection unit 50 in the controller, or in the function control unit 52. The storage unit stores a first preset threshold and a second preset threshold. For example, the preset over-discharge low-voltage protection value and the preset over-charge protection value of the battery pack 3 may be specifically used. When the laser module is used specifically, the controller can compare the current state parameter of the battery pack detected by the battery detection unit 50 with the threshold value stored in the storage unit, and control the electrical connection relationship between the laser module and the battery pack through the control function control unit 52 according to the comparison result.

Battery detection unit 50 in some embodiments, the function control unit 52 may include: the on-off component and a power supply circuit connected with the on-off component. The state parameter of the battery pack 3 may be a voltage. When the voltage of the battery pack 3 is smaller than a preset low-voltage protection value, the on-off component disconnects the power supply circuit, and the battery pack 3 stops supplying power to the laser assembly 1 and the control device; or, when the voltage of the battery pack 3 reaches the preset overcharge protection value, the on-off member disconnects the power supply circuit, so that the external power supply stops charging the battery pack 3.

In the present embodiment, the function control unit 52 may include an on-off member and a power supply circuit connecting the on-off member to between the battery pack 3 and the object to be powered. Wherein, the power supply object may include: the laser assembly 1, the control device and other accessories of the laser level that need to be powered, such as a battery status indication unit, an alarm etc. Battery test unit 50 the function control unit 52 may be a chip on the integrated main control board. The function control unit 52 may be provided in the power supply circuit between the battery pack 3, the battery detection unit 50, and the laser module. When the battery detection unit 50 detects that the voltage of the current battery pack 3 is smaller than the preset over-discharge low-voltage protection value or the voltage reaches the preset over-charge protection value, the on-off component disconnects the power supply circuit, and power-off protection is achieved.

In other embodiments, the function control unit 52 comprises a programmable controller. The programmable controller may have a control program stored therein. The control program is equivalent to an electronic switch and is mainly used for realizing the function of controlling the battery pack 3 to stop supplying power outwards or charge inwards in time based on the comparison result between the current battery pack 3 and the preset low-voltage protection value and the preset overcharge protection value. When the battery detection unit 50 detects that the voltage of the battery pack 3 is smaller than a preset low-voltage protection value, the programmable controller controls the battery pack 3 to stop supplying power to the laser assembly 1 and the control device; alternatively, when the battery detection unit 50 detects that the voltage of the battery pack 3 reaches the preset overcharge protection value, the programmable controller controls the external power supply to stop charging the battery pack 3.

Here, the function control unit may include an on-off member provided in the electric circuit to control on and off, or may be in the form of a programmable controller storing a control program. Of course, the function control unit may also be in the form of a superposition of the controller stored with the control program and the on-off member. For example, when the battery pack 3 is used, the control device can mainly use a programmable controller, and when the electronic switch fails, the on-off piece is used for on-off protection, so that multiple protection of the battery pack 3 is realized.

In the present embodiment, the preset low-voltage protection value stored in the control program in the programmable controller may be the same as or different from the preset low-voltage protection value corresponding to the on-off member.

When the two are different and the priority level of the programmable controller is higher than that of the on-off element during working, the preset low-voltage protection value stored in the control program in the programmable controller can be larger than the preset low-voltage protection value corresponding to the on-off element.

When the voltage of the battery pack 3 is lower than a preset low-voltage protection value stored in a control program in the programmable controller, the whole machine can be controlled to enter a low-power-consumption mode, the battery in the battery pack 3 is reliably protected, and the electric quantity is saved. When the voltage of the battery pack 3 is lower than the preset low-voltage protection value, the battery pack 3 is disconnected with the equipment to be powered, and finally the battery pack 3 can enter a forced sleep state, so that the battery pack 3 is reliably protected and cannot be damaged due to over-discharge. When the battery pack 3 is recharged, the battery pack 3 can be activated.

In the present embodiment, the preset overcharge protection value stored in the control program in the programmable controller may be the same as or different from the preset overcharge protection value corresponding to the on-off element.

When the two are different and the priority of the programmable controller is basically higher than the priority of the on-off element during working, the preset overcharge protection value stored in the control program in the programmable controller can be smaller than the preset overcharge protection value corresponding to the on-off element.

When the charging voltage is greater than the preset overcharge protection value stored in the programmable controller, the programmable controller controls the external power supply to stop charging the battery pack 3, so that the phenomenon that the service life is shortened due to the fact that the battery is damaged due to long-time charging of the battery is avoided. In addition, if the programmable controller fails, the power supply circuit can be disconnected by the on-off element, so that the external power supply stops charging the battery pack 3, and the problem of short service life caused by overcharging of the battery pack 3 is avoided more reliably.

For the battery pack 3 of the laser level meter, a certain working temperature interval is corresponding. The operating temperature ranges are different for different battery types. For example, when the battery in the battery pack 3 is a lithium battery, the operating temperature range is approximately as follows: -20 ℃ to 60 ℃.

In one embodiment, the laser level is provided with a temperature overheat protection function in order to prevent the temperature of the battery pack 3 from exceeding the maximum temperature value and becoming inoperable. Specifically, the control device further includes: and a temperature detector for detecting the temperature of the battery pack 3. The temperature detector is electrically connected with the battery detection unit 50, and when the temperature detector detects that the temperature of the battery pack 3 reaches a preset temperature value, the controller controls the function control unit 52 to disconnect the laser assembly from the battery. The preset temperature value may be set with reference to a working temperature range of the battery in the battery pack 3, for example, the preset temperature value may be slightly smaller than a maximum value of the working temperature range.

The battery pack 3 may include a battery assembly 32 in which a plurality of batteries are connected in a certain manner, and an electrode holder 31 for mounting the battery module, and the temperature detector may be disposed on the electrode holder 31.

In one embodiment, in order to ensure the stability of the current when the battery pack 3 is charged, especially to avoid the damage of the battery caused by the excessive charging current, the laser level meter is further provided with a constant current protection function. Specifically, the battery detection unit 50 includes a current detector for detecting the magnitude of the current of the battery pack. The current detector is electrically connected to the function control unit 52. When the current value detected by the current detector deviates from the predetermined current range, the controller controls the function control unit 52 to electrically disconnect the laser module from the battery pack, and the battery detection unit 50 thereby performs constant current protection on the battery pack 3.

Wherein the predetermined current range may be determined according to performance parameters of the batteries in the battery pack 3. For example, the predetermined current range may be shifted positive or negative as appropriate based on the rated current of the battery pack 3. The specific offset and numerical value are not specifically limited herein.

In the present embodiment, the function control unit 52 is mainly used to realize the operation mode switching function of the laser level. Specifically, the function control unit 52 may be in the form of an integrated circuit, and the function control unit 52 may be located in the circuit between the battery detection unit 50 and the movement assembly 20. In addition, as shown in fig. 7, the form in which the function control unit 52 and the battery detection unit 50 are integrated on the same integrated circuit substrate is not excluded. The function control unit 52 may be provided with a plurality of operating parts for interacting with a user to control the state of the laser assembly.

In this embodiment, when the laser level is operated, the laser level can directly operate a functional interface on the housing 2, on which the operation unit or a position corresponding to the operation unit is provided, to input an instruction. In addition, the laser level meter can also realize the input instruction in a remote control mode.

When the input of the instruction is realized by directly operating the function interface on the housing 2, the function interface on the housing 2 corresponds to the function control unit 52. When the user operates the function interface, the function control unit 52 can control the laser assembly 1 to operate in a manner corresponding to the input instruction according to the input instruction of the operator.

The function interface may be provided with a mode switch 53, and the specific operation mode of the mode switch 53 is not specifically limited in this application, and may be by touching, pressing, rotating, or the like. In addition, the specific function of the mode switch 53 on the functional interface may also vary according to the specific composition of the laser level, etc. For example, the mode switch 53 may include one or more of the following in combination: the alarm comprises a first switch key for switching the working state of the laser assembly 1, a second switch key for adjusting the light intensity in the laser assembly 1, a third switch key for switching the volume of the alarm and the like, and a fourth switch key for starting and stopping the alarm and the like. Each of the switches may be independently disposed, and in addition, at least two switches may be integrated at the same position in order to reduce the area of the function interface. For a scene with at least two switching key functions integrated at the same position, switching of different switching keys can be realized through different setting operations. For example, the setting operation may be a difference in pressing time.

When the input instruction is realized by a remote control mode, the control device can also comprise a remote control module. The remote control module comprises a remote control device separate from the housing 2, which may comprise an input unit, a signal processor, a signal transmitter. In addition, the remote control module also includes a signal receiver in signal interfacing with the signal transmitter. The signal receiver is used for receiving the signal of the signal sent by the signal transmitter. The laser module is used for inputting a control command on the input unit, sending the control signal to the signal receiver by the signal transmitter after the control command is input on the input unit and passing through the signal processor, and controlling the laser module to work in a mode corresponding to the control command.

Wherein, controlling means can be cell-phone APP, intelligent control equipment, remote controller etc.. The receiver can be integrated in the function control unit 52, and compared with the receiver fixed in the function control unit 52 by welding, the receiver is beneficial to reducing the occupied volume and further beneficial to the miniaturization design of the whole machine.

Referring to fig. 11-14 in combination, the laser level may further include an alarm device. The movement assembly 20 further comprises a pendulum 26 which can be switched between a first state and a second state, and a movement base 27 which is fixed relative to the casing 2. As shown in fig. 11 and 12, when the pendulum 26 is in the first state, the pendulum 26 is electrically separated from the movement base 27, and as shown in fig. 13 and 14, when the pendulum 26 is in the second state, the pendulum 26 can be electrically connected to the movement base 27, so that the alarm device can be triggered.

In this embodiment, the control device may further include an alarm device. Specifically, the alarm device may be in the form of a buzzer, but may also be in other forms, such as any form of audible and visual alarm device, and the application is not limited in this respect.

When the pendulum 26 is in the first state, the pendulum 26 is fixed relative to the movement base 27; when the pendulum 26 is in the second state, the pendulum 26 can rotate relative to the movement base 27, and when the inclination angle between the pendulum 26 and the movement base 27 exceeds a predetermined angle, the pendulum 26 is electrically connected with the alarm device so as to contact the alarm device.

The control device also includes a switching member that switches the state of the pendulum 26. The switching member may be an operating member 24 provided on the housing 2 for manual control by a user. The operating member 24 is movable relative to the housing 2 between a first position and a second position. When the operating member 24 is in the first position, the movement assembly 20 (pendulum 26) is locked with respect to the housing 2 (stand), the pendulum 26 is in the first state, the 3D laser level can be placed in a tilted manner as a whole, the laser assembly 1 is tilted, and the 3D laser level functions as a tilted line. When the operating member 24 is in the second position, the operating member 24 releases the movement assembly 20 (the pendulum 26) from the housing 2, and the pendulum 26 can rotate (around the pivot center) relative to the housing 2, and the pendulum 26 is in the second state.

The 3D laser level meter has an alarm function, and an alarm device can send out an alarm signal as long as the inclination angle between the pendulum bob 26 and the movement base 27 reaches a preset angle. The preset angle may be specifically set according to the structure of the movement assembly 20 and the required precision requirement, and may be, for example, 3 degrees, 6 degrees, 28 degrees, and the like. In addition, a transmission member 28 driven by the operating member 24 is arranged in the casing 2, when the operating member 24 is in the first position, the transmission member 28 is in a state of being locked with the movement assembly 20, at this time, the transmission member 28 is disengaged from a signal switch trigger device 29 on the control device, and the signal switch is turned off, so that the laser assembly 1 does not emit light. When the operating member 24 moves from the first position to the second position, the driving member 28 is driven to move to a state of being unlocked from the movement assembly 20, and at this time, the driving member 28 abuts against the signal switch triggering device 29 on the control device, so that the control device can control the laser assembly 1 to emit light.

It should be noted that: when the operating member 24 is in the first position, the battery pack 3 is still electrically connected to the battery detection unit 50 and the function control unit 52, and the whole circuit system also operates with micro-current. When a function interface is operated, for example, a button on the function interface is pressed for a long time, the laser assembly 1 can be started, so that the laser assembly is inclined. Then, when the whole machine is in a shutdown state, the circuit system still has micro-current operation, and when the whole machine is placed for a long time and is not charged, the battery can be discharged, so that the battery detection unit 50 is very necessary to be added to perform over-discharge protection on the battery pack 3.

As shown in fig. 1b and 4, in one embodiment, the housing 2 includes a first housing 21 for housing the battery pack 3, and a second housing 22 for housing the engine assembly 20. A partition 23 is provided between the first housing 21 and the second housing 22, and the partition 23 is recessed in the first housing 21 and the second housing 22.

In the present embodiment, the housing 2 may include a first case 21 and a second case 22. A hollow cavity is formed inside the first shell 21 and can be used for accommodating the battery pack 3; the second housing 22 is primarily for mounting the core assembly 20. The first housing 21 and the second housing 22 may be integrally formed or may be provided separately. The first and

second housings

21 and 22 may be arranged side by side in a horizontal direction, and a partition 23 may be provided therebetween, the partition 23 being recessed in the first and

second housings

21 and 22. On the one hand, the partition part 23 which is concavely arranged cannot interfere with the laser surface 106 emitted by the laser component 1, on the other hand, the partition part 23 which is concavely arranged can reduce the whole volume of the laser level, and visually divide the battery pack 3 and the movement component 20, so that the attractiveness of the laser level is improved.

Further, the power supply connector 4 is integrated at one end of the battery detection unit 50, the partition 23 is a transition shell located between the first shell 21 and the second shell 22, the battery detection unit 50 is located in the transition shell, and a mounting opening for connecting an external connector with the power supply connector 4 is formed in the transition shell.

In the present embodiment, the partition 23 may be a transition case located between the first case 21 and the second case 22. As shown at a in fig. 6, a battery detection unit 50 may be provided in the transition housing. The battery detection unit 50 may be embodied in the form of an integrated circuit. Wherein the power supply connector 4 is integrated at one end of the battery test unit 50. The transition housing is provided with a mounting opening for connecting an external connector to the power supply connector 4, the mounting opening being adapted to expose the power supply connector 4 to facilitate optimal routing of the internal circuitry of the laser level.

In the process of using the normal laser level meter, the internally formed power supply circuit can be: the battery pack 3, the battery detection unit 50 and the part to be powered in the movement assembly 20. When the battery inspection unit 50 is located between the first casing 21 for mounting the battery pack 3 and the second casing 22 for mounting the cartridge assembly 20, it is advantageous to minimize the internal wiring and simplify the arrangement.

Furthermore, for embodiments provided with a function control unit 52, during normal laser level use, the internally formed power supply circuit may be: the battery pack 3, the battery detection unit 50, the function control unit 52 and the part to be powered in the movement assembly 20, the transition case of the battery detection unit 50 between the first case 21 and the second case 22 is also an optimal arrangement scheme.

Referring to fig. 8, 9 and 10, in other embodiments, the cartridge assembly 20 may include a cartridge holder. The movement bracket is provided with a top end and a bottom end which are opposite. The battery detection unit 50 is also provided at any one of the following positions: the top end of the core support, the bottom end of the core support, the inner wall of the casing 2 accommodating the core assembly 20. Specifically, as shown in fig. 8 and 9, the battery detection unit 50 may be disposed at the top end of the movement holder (i.e., at B in the drawing); as shown in fig. 6, the battery detection unit 50 may be disposed at the bottom end of the cartridge holder (i.e., at F in the drawing); as shown in fig. 8 and 9, the battery detection unit 50 may be disposed on an inner wall of the movement holder (i.e., C, D or E in the drawing except for a). The trace locations at other locations are different relative to the embodiment at a, and therefore the connecting wires are of different lengths. As shown in fig. 10, the function control unit 52 is integrated with the battery detection unit 50 on the same integrated circuit substrate, and therefore, the battery detection unit 50 is located at B.

In one embodiment, the control device may further include an adapter board 51, the adapter board 51 is used for transitionally connecting the outlet of the laser module 1 to the function control unit 52, and the function control unit 52 is electrically connected to the battery pack 3 through the battery detection unit 50. Since the lead wire of the laser module 1 is thin, if the lead wire is directly connected to the function control unit 52, the reliability of the entire circuit cannot be ensured. Therefore, in the present embodiment, the adapter board 51 is used to perform the adapter, the thin lead wires are fixed to the board body of the adapter board 51, and the thick lead wires are connected to the function control unit 52, thereby ensuring the reliability of the whole circuit.

Further, the adapter plate 51 may be disposed at the top end of the deck chassis near the function control unit 52 and the battery detection unit 50, and when the adapter plate 51 is disposed at this position, it may be advantageous to optimally dispose the adapter line. If the adaptor plate 51 is located far from the function control unit 52 and the battery detection unit 50, the length of the connection line and the position of the wiring groove need to be increased, which may result in increased cost and increased structural complexity.

In addition, in one embodiment, the laser level may also have the function of operating while charging. Specifically, when the external power source is connected to the power supply connector 4, a rated current of the current supplied from the external power source is supplied to the battery pack 3 through the battery detection unit 50, and another part of the current flows through the battery detection unit 50 and is supplied to the laser module 1 through the function control board.

In the description of the present specification, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A laser level, comprising:

a housing;

a battery pack for serving as a power supply source;

2. The laser level of claim 1, wherein the function control unit comprises an on-off member and a power supply circuit connected to the on-off member, wherein when the voltage of the battery pack is less than a preset low voltage protection value, the on-off member disconnects the power supply circuit, and the battery pack stops supplying power to the laser assembly; or when the voltage of the battery pack reaches a preset overcharge protection value, the on-off part disconnects the power supply circuit, so that an external power supply stops charging the battery pack.

3. The laser level of claim 1, wherein the function control unit comprises a programmable controller, and when the battery detection unit detects that the voltage of the battery pack is less than a preset low-voltage protection value, the programmable controller controls the battery pack to stop supplying power to the laser assembly; or when the battery detection unit detects that the voltage of the battery pack reaches a preset overcharge protection value, the programmable controller controls an external power supply to stop charging the battery pack.

4. The laser level of claim 1, wherein the battery detection unit comprises a temperature detector for detecting the temperature of the battery pack, the temperature detector is electrically connected to the controller, and when the temperature detector detects that the temperature of the battery pack reaches a preset temperature value, the controller controls the function control unit to electrically disconnect the laser assembly from the battery pack.

5. The laser level of claim 1, wherein said battery detection unit comprises a current detector for detecting the current level of said battery pack, said current detector is electrically connected to said function control unit, and when the current value detected by said current detector deviates from a predetermined current range, said controller controls said function control unit to electrically disconnect said laser assembly from said battery pack.

6. The laser level of claim 1, wherein the housing is provided with a user operation unit for receiving a control command input by a user, and the function control unit is capable of controlling the laser assembly to operate in a manner corresponding to the control command according to the control command input by the user.

7. The laser level of claim 1, further comprising a remote control module comprising a remote control device separate from said housing, said remote control device comprising an input unit, a signal processor, a signal transmitter, said control device comprising a signal receiver in signal interfacing with said signal transmitter; and after a control command input by a user on the input unit passes through the signal processor, the signal transmitter sends a control signal to the signal receiver to control the laser assembly to work in a mode corresponding to the control command.

8. A laser level as claimed in claim 6 or 7, further comprising an alarm device, wherein the movement assembly further comprises a pendulum that can be switched between a first state and a second state, and a movement base that is fixed relative to the housing, wherein when the pendulum is in the first state, the pendulum is electrically disconnected from the movement base, and when the pendulum is in the second state, the pendulum and the movement base can be electrically connected, and wherein the alarm device can be triggered.

9. The laser level of claim 8, wherein when the pendulum is in a first state, the pendulum is fixed relative to the deck base; when the pendulum is in a second state, the pendulum can rotate relative to the movement base, and when the inclination angle between the pendulum and the movement base exceeds a preset angle, the pendulum is electrically connected with the alarm device so as to contact the alarm device.

10. The laser level of claim 1, wherein the housing comprises a first housing for receiving the battery pack and a second housing for receiving the engine assembly, wherein a partition is disposed between the first housing and the second housing, and the partition is recessed within the first housing and the second housing.

11. The laser level of claim 10, further comprising a power connector for connecting to an external power source, wherein the power connector is integrated at one end of the battery test unit, the partition is a transition housing located between the first housing and the second housing, the battery test unit is located in the transition housing, and the transition housing is provided with a mounting opening for electrically connecting the external connector to the power connector.

12. The laser level of claim 1, wherein the cartridge assembly comprises a cartridge holder having opposing top and bottom ends, the battery detection unit being disposed at any one of: the top of core support, the bottom of core support, accept the inner wall of the casing of core assembly.