Electric hand tool lock error prevention control method

Abstract

The present invention discloses a method for preventing errors in the lock of an electric hand tool. When an electric hand tool is operated, the initialization is started first, and the "setting options" and "batch count" information are displayed on the display unit. When the trigger is pressed, it is determined whether the tooth-finding setting is turned on. If it is turned on, the power is output at the tooth-finding speed (low speed) and then at full power. Otherwise, the power is output at full speed until the output of the drive unit reaches the default torque value. Then, a standard-reaching warning is output and the correct "locking work number" is calculated to see whether it meets the "batch count" requirement. By means of the above method, the number of operations and the control of locking standards are prompted during the user's operation, so as to avoid the user from missing or not locking due to some reason.

Description

Technical Field

[0001] The present invention relates to a technical field related to hand tool control, and in particular to an error-proof control method for an electric hand tool lock. Background Art

[0002] In the production process, multiple components are often assembled with locks, and a production line includes multiple workstations, which are assigned to use different types of locks to assemble different components. In this complex situation, operators need to rotate between different workstations, which may lead to the omission of some locks due to negligence during the assembly process, or the locks may not be firmly set or over-tightened. Summary of the invention

[0003] In view of the above problems and deficiencies of the prior art, the main purpose of the present invention is to provide an error-proof control method for electric hand tool locks, which solves the deficiencies of the prior art through innovative design.

[0004] A method for preventing errors in electric hand tool locks comprises the following steps:

[0005] Provided is an electric hand tool, comprising a body, a driving unit disposed on the body and electrically coupled to a control unit, a trigger, a display unit, a prompt unit, an operation key group, a torque control unit, a memory unit and a power unit;

[0006] Step (S10), start initialization, the control unit runs and displays a setting option on the display unit;

[0007] Step (S12), batch count setting is turned on, the control unit obtains the setting of the batch count option switch in the memory unit, if yes, then step S14 is executed, otherwise step (S38) is executed, and the end is completed;

[0008] Step (S14), displaying batch count information, the control unit obtains the batch count value from the memory unit and displays it on the display unit;

[0009] Step (S16), the trigger is pressed, if not pressed, go to step (S14);

[0010] Step (S20), the tooth-finding setting is turned on, and the control unit obtains the tooth-finding setting option switch in the memory unit. If it is not turned on, go to step (S24);

[0011] Step (S22), outputting power at a tooth-finding speed, and the driving unit running at a low speed for a preset time;

[0012] Step (S24), outputting power at full speed, and the driving unit running at full speed for a preset time;

[0013] Step (S28), when the preset torque value is reached, the torque control unit obtains the torque value output by the driving unit; if the preset torque value is not reached, the process goes to step (S24);

[0014] Step (S32), prompting a target reaching signal, the control unit instructs the prompt unit to output a target reaching warning, and stores the accumulated number of correct locking operations in the memory unit; and

[0015] Step (S36), the batch count reaches the target, and if the control unit determines that the batch count has been reached, it goes to step (S10), otherwise it goes to step (S14).

[0016] Furthermore, between step (S16) and step (S20), there is also a step (S18) of locking the design time, wherein the control unit starts counting the accumulated working hours from "0"; and

[0017] Between step (S24) and step (S28), there is also a step (S46) of locking piece slipping, in which the control unit compares the accumulated working hours with the locking time zone in the memory unit; if it is greater than the time zone, the control unit instructs the prompt unit to output a slipping warning, otherwise, step (S28) is executed.

[0018] Furthermore, between step (S16) and step (S20), there is also a step (S18) of locking the design time, wherein the control unit starts counting the accumulated working hours from "0"; and

[0019] Between step (S28) and step (S32), there is also a step (S30) of partial locking of the locking piece, in which the control unit compares the accumulated working hours with the locking time zone in the memory unit; if it is less than the time, the control unit instructs the prompt unit to output a partial locking warning and execute step (S14), otherwise, step (S32) is executed.

[0020] Furthermore, the batch count information is the number of locking pieces to be locked.

[0021] Furthermore, between step (S32) and step (S36), there is also a step (S36) of achieving a maintenance cycle, in which the control unit compares the accumulated number of correct locking operations in the memory unit with the maintenance target number, and executes step (S36) when the number has not been reached; when the number has been reached or is greater than the target number, the control unit displays a maintenance reminder on the display unit and executes step (S36).

[0022] Furthermore, the steps for setting options are also included, including

[0023] (S51) Entering a setting option, using the operation key group to trigger the control unit to enter the setting option;

[0024] (S53) providing a setting menu, and the control unit displays the setting menu of a plurality of sub-options on the display unit;

[0025] (S55) Entering a sub-option, using the operation key group to trigger the control unit to rotate and set or select the sub-option content;

[0026] (S57) Password input request, the control unit displays a password input prompt on the display unit;

[0027] (S59) changing the sub-option settings, the control unit displays the changeable contents of the sub-options on the display unit;

[0028] (S61) confirming the change, using the operation key group to confirm the change;

[0029] (S63) Whether to continue setting, the control unit displays a prompt option on the display unit, if continuing, executing step (S53), otherwise executing (S10).

[0030] The electric hand tool lock error prevention control method of the present invention cooperates with an electric hand tool to run, first start initialization, display setting options and batch count information on the display unit, and judge whether the tooth-finding setting is turned on when the trigger is pressed. If it is turned on, it outputs at the tooth-finding speed (low speed) and then outputs power at full speed. Otherwise, it outputs power at full speed until the output of the drive unit reaches the default torque value, outputs a standard-reaching warning, and calculates whether the number of correct locking operations meets the batch count requirements. By using the above method, during the user's operation, the number of operations and the control of locking standards are prompted to avoid the user's missing or not locking due to some reason. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic diagram of an embodiment of an electric hand tool of the present invention;

[0032] Figure 2 yes Figure 1 A partial schematic diagram of the embodiment shown from a rear end perspective;

[0033] Figure 3 yes Figure 1 A partial schematic diagram of the embodiment shown from a front-end perspective;

[0034] Figure 4 It is a schematic diagram of the principle of the electric hand tool of the present invention;

[0035] Figure 5 Schematic diagram of the error prevention control method of the electric hand tool lock of the present invention (I);

[0036] Figure 6 Schematic diagram (II) of the error prevention control method for the electric hand tool lock of the present invention.

[0037] 100: Power hand tools

[0038] 11: Ontology

[0039] 12: Drive unit

[0040] 13: Trigger

[0041] 14: Display unit

[0042] 15: Prompt unit

[0043] 16: Operation key group

[0044] 161: Confirm key

[0045] 162: Arrow keys

[0046] 163: Cancel key

[0047] 17: Torque control unit

[0048] 18: Memory Unit

[0049] 19: Power Unit

[0050] CP: Control Unit

[0051] S10~S63: Steps DETAILED DESCRIPTION

[0052] Please refer to the relevant drawings below to further illustrate the embodiment of the error-proof control method for electric hand tool locks of the present invention. The various objects in the embodiments are depicted according to the proportions, sizes, deformations or displacements suitable for the description, rather than being drawn according to the proportions of the actual components. And the components of the same and symmetrical configurations in the remaining embodiments are all represented by the same symbols. In addition, the directional terms such as front, back, left, right, up, down, inside, outside, etc. in the description of each embodiment listed below are expressed according to the specified viewing direction and cannot be interpreted as limiting the present invention.

[0053] like Figures 1 to 4 As shown, the electric hand tool 100 generally includes a body 11, a driving unit 12, a trigger 13, a display unit 14, at least one prompt unit 15, an operation key group 16, a torque control unit 17, a memory unit 18, a power unit 19 and a control unit CP.

[0054] The main body 11 has a preset contour.

[0055] The driving unit 12 is partially accommodated in the body 11 , and an output end thereof is connected to the outside of the body 11 .

[0056] The trigger 13 is pivotally mounted at a predetermined position of the body 11 to provide a pressing function for the user.

[0057] The display unit 14 is arranged at a default position of the main body 11 for displaying messages.

[0058] The prompt unit 15 is arranged at a preset position of the body 11 to provide sound or (and) light signals to prompt the user. In practice, the prompt unit 15 is selected from a speaker, a light source (such as an LED), or a combination thereof.

[0059] The above-mentioned operation key groups 16 are arranged at a preset position of the body 11, providing the user with options to press. In practice, the operation key group 16 includes function keys for specific purposes, such as a confirmation key 161, arrow keys 162, a cancel key 163, a menu key, etc.

[0060] The torque control unit 17 is installed at a default position of the body 11 to sense and set the torque value of the driving unit 12 .

[0061] The memory unit 18 is arranged at a preset position of the body 11 to store relevant setting data.

[0062] The power unit 19 is installed at a predetermined position of the body 11 to provide the power required for the electric hand tool 100 to operate.

[0063] The control unit CP is electrically coupled to the drive unit 12, the trigger 13, the display unit 14, the prompt unit 15, the operation key group 16, the torque control unit 17, the memory unit 18, and the power unit 19, respectively, and activates the drive unit 12 in accordance with the user's setting in conjunction with the trigger 13 to perform the locking operation.

[0064] See also Figures 1 to 6 As shown, the electric hand tool lock error prevention control method of the present invention is used in conjunction with the above-mentioned electric hand tool 100 to control the operation of the electric hand tool 100, and includes the following steps:

[0065] S10 , start initialization. Once the power unit 19 of the electric hand tool 100 is set (powered on), the control unit CP operates and displays the selection including setting options on the display unit 14 (not shown).

[0066] S12, batch count setting is turned on. The control unit CP determines whether the batch count option switch is turned on according to the setting in the memory unit 18. If yes, it executes step S14. Otherwise, it executes step S38. The switching of the batch count option switch can be set by executing the setting option (to be described later).

[0067] S14, displaying batch count information. The control unit CP obtains the batch count value from the memory unit 18 and displays it on the display unit 14 as countdown information. The content includes (but is not limited to) the number of fasteners required to be locked for each workpiece in this station and the required torque value Nm (Newton meter).

[0068] S16: Trigger is pressed. When the control unit CP obtains that the trigger 13 is pressed, the control unit executes step S18, otherwise the control unit returns to step S14.

[0069] S18, when the lock is set, the control unit CP starts to count the accumulated working hours from "0".

[0070] S20, tooth-finding setting is turned on. The control unit CP performs step S22 if the tooth-finding setting option switch in the memory unit 18 is turned on, and performs step S24 if it is turned on. During implementation, the switching of the tooth-finding setting option switch can be set by executing the setting option.

[0071] S22, output power at the tooth-finding speed. The control unit CP controls the driving unit 12 to output power at the tooth-finding speed for a preset time according to the tooth-finding speed stored in the memory unit 18, so that the locking piece (not shown) sleeved on the output end of the driving unit 12 is driven to rotate slowly, so as to facilitate locking with the lock hole (not shown).

[0072] S24, output power at full speed. The control unit CP instructs the drive unit 12 to output power at full speed for a preset time, so that the locking piece set on the output end of the drive unit 12 is driven at high speed to lock into the lock hole.

[0073] S26, the locking piece slips. The control unit CP compares the accumulated working hours with the locking time zone in the memory unit 18; if it is greater, the control unit CP makes the prompt unit 15 output a slip warning to remind the user to stop the locking action and execute step S14. If it is less than, execute step S28. During implementation, the slip warning is selected from one of the sound and light signals or a combination thereof. In addition, the control unit CP can selectively stop the driving unit 12. The relevant locking time zone refers to a time interval (for example, 3-5 seconds), rather than a single number (for example, 3 seconds), which can be set by executing the setting option.

[0074] S28, reaching the preset torque value. The control unit C obtains the torque value output by the driving unit 12 through the torque control unit 17, and returns to step S24 if it does not reach the preset torque value. If it reaches the preset torque value, step S30 is executed.

[0075] S30, the locking device is partially locked. The control unit CP compares the accumulated working hours with the locking time zone in the memory unit 18; if it is less than 1, the control unit CP makes the prompt unit 15 output a partial lock warning to remind the user to re-lock the device and execute step S14. If it is greater than 1, execute step S32. When implemented, the partial lock warning is selected from one of sound, light signal or a combination thereof. In addition, the control unit CP can selectively stop the driving unit 12.

[0076] S32, prompting a target reaching signal. The control unit CP causes the prompting unit 15 to output a target reaching warning, so that the user can release the trigger 13 to stop the current locking. When implemented, the target reaching warning is selected from one of a sound and a light signal or a combination thereof. In addition, the control unit CP can selectively stop the driving unit 12 from operating, and the accumulated number of correct locking operations is stored in the memory unit 18.

[0077] S34, periodic maintenance reaches the standard. The control unit CP compares the accumulated correct locking work number in the memory unit 18 with the maintenance target number. If it has not reached (or is greater than), the control unit CP displays a maintenance reminder on the display unit 14 and executes step S36. During implementation, the accumulated correct locking work number can be reset to zero by executing the setting option. The maintenance target number can also be set by executing the setting option.

[0078] S36, the batch count reaches the target. The control unit CP subtracts 1 from the countdown information and updates the countdown information in the display unit 14. If the countdown information is 0, the control unit CP makes the prompt unit 15 output a prompt signal to let the user know that the locking of all the locking parts of the workpiece has been completed, and executes step S10. Otherwise, execute step S14.

[0079] S38, end.

[0080] The above setting options further include a plurality of sub-options, such as the batch count option switch, batch count quantity setting, tooth search setting option switch, tooth search speed setting, lighting switch setting, maintenance target number, and post-maintenance reset, etc. The user can enter the setting menu step through the specific operation key group 16, and select, switch, and set the options in the setting menu, and the set information will be stored in the memory unit 18, so that the control unit CP can read and execute the above steps.

[0081] like Figure 6 As shown, when the user wants to use the setting options to set the included sub-options, the setting option operation steps include:

[0082] S51 , entering the setting option. The user uses the arrow key 162 and the menu key 164 in the operation key group 16 to trigger the control unit CP to select the setting option in the display unit 14 .

[0083] S53, providing a setting menu. The control unit CP displays a setting menu including a plurality of sub-options on the display unit 14.

[0084] S55, entering the sub-option. The user uses the arrow keys 162 in the operation key group 16 to trigger the control unit CP to rotate the sub-option contents of the setting menu, and cooperates with the confirmation key 161 in the operation key group 16 to select a sub-option in the setting menu.

[0085] S57, password input request. The control unit CP displays a password input prompt in the display unit. The user uses the arrow keys 162 of the operation key group 16 to input, and the control unit CP compares the password information stored in the memory unit 18.

[0086] S59, change sub-option settings. The control unit CP displays the changeable contents of the sub-options on the display unit 14, and provides the user with the arrow keys 162 of the operation key group 16 to change the contents of the sub-options.

[0087] S61, confirm the change. The user uses the confirmation key 161 in the operation key group 16 to confirm the change. The user can also use the cancel key 163 in the operation key group 16 to cancel and return to S59.

[0088] S63, whether to continue setting. The control unit CP displays prompt options on the display unit for the user to select by using the arrow keys 162 of the operation key group 16. If continuing, step S53 is executed, otherwise, step S10 is executed.

[0089] When the display unit 14 displays the maintenance reminder, the user can freely arrange the maintenance time according to the needs. After the maintenance is completed, the accumulated number of correct locking operations in the memory unit 18 must be reset to zero so that the maintenance reminder will no longer appear.

[0090] The method is to reset the accumulated correct locking operation number in the memory unit 18 to zero according to the above setting option operation steps. The operation method is the same as the above embodiment, and select the sub-option of reset after maintenance in the setting menu to reset.

[0091] The above description is only a preferred embodiment of the present invention, which is intended to clarify the features of the present invention, but is not intended to limit the scope of the embodiments of the present invention. Equivalent changes made by ordinary technicians in this technical field based on the present invention, as well as changes known to technicians in this field, should still fall within the scope of the present invention.

Claims

1. A method for preventing errors in electric hand tool locks, characterized in that: The following steps are involved: Provided is an electric hand tool, comprising a body, a driving unit disposed on the body and electrically coupled to a control unit, a trigger, a display unit, a prompt unit, an operation key group, a torque control unit, a memory unit and a power unit; Step (S10), start initialization, the control unit operates and displays a setting option on the display unit; Step (S12), the batch count setting is turned on, and the control unit obtains the setting of the batch count option switch in the memory unit. If yes, step (S14) is executed, otherwise step (S38) is executed, and the process ends; Step (S14), displaying batch count information, the control unit obtains the batch count value from the memory unit and displays it on the display unit; Step (S16), the trigger is pressed, if not pressed, go to step (S14); Step (S20), the tooth-finding setting is turned on, and the control unit obtains the tooth-finding setting option switch in the memory unit. If it is not turned on, go to step (S24); Step (S22), outputting power at a tooth-finding speed, and the driving unit running at a low speed for a preset time; Step (S24), outputting power at full speed, and the driving unit running at full speed for a preset time; Step (S28), when the preset torque value is reached, the torque control unit obtains the torque value output by the driving unit; if the preset torque value is not reached, the process goes to step (S24); Step (S32), prompting a standard reaching signal, the control unit causes the prompt unit to output a standard reaching warning, and stores the accumulated number of correct locking operations in the memory unit; as well as Step (S36), the batch count reaches the target, and if the control unit determines that the batch count has been reached, it goes to step (S10), otherwise it goes to step (S14).

2. The electric hand tool lock error prevention control method according to claim 1, characterized in that : Between step (S16) and step (S20), a step (S18) of locking the design time is also included, and the control unit starts counting the accumulated working hours from "0"; as well as Between step (S24) and step (S28), there is also a step (S46) of locking piece slipping, in which the control unit compares the accumulated working hours with the locking time zone in the memory unit; if it is greater than the time zone, the control unit instructs the prompt unit to output a slipping warning, otherwise, step (S28) is executed.

3. The electric hand tool lock error prevention control method according to claim 1, characterized in that : Between step (S16) and step (S20), there is also a step (S18) of locking the design time, wherein the control unit starts counting the accumulated working hours from "0"; as well as Between step (S28) and step (S32), there is also a step (S30) of partial locking of the locking piece, in which the control unit compares the accumulated working hours with the locking time zone in the memory unit; if it is less than the time, the control unit instructs the prompt unit to output a partial locking warning and execute step (S14), otherwise, step (S32) is executed.

4. The method for preventing errors in electric hand tool locks according to claim 1, characterized in that: The batch count information is the number of lock pieces that need to be locked.

5. The electric hand tool lock error prevention control method according to claim 1, characterized in that: Between step (S32) and step (S36), there is also a step (S36) of reaching the maintenance target for a period, in which the control unit compares the number of correct locking operations accumulated in the memory unit with the maintenance target number. If the number has not been reached, step (S36) is executed. If the number has been reached or is greater than the target number, the control unit displays a maintenance reminder on the display unit and executes step (S36).

6. The method for preventing errors in electric hand tool locks according to claim 1, characterized in that: Also includes steps for setting options, including Step (S51), entering the setting options, using the operation key group to trigger the control unit to enter the setting options; Step (S53), providing a setting menu, and the control unit displays the setting menu of multiple sub-options on the display unit; Step (S55), enter the sub-option, use the operation key group to trigger the control unit to rotate and set or select the sub-option content; Step (S57), password input requirement, the control unit displays a password input prompt on the display unit; Step (S59), changing the sub-option settings, the control unit displays the changeable content of the sub-options in the display unit; Step (S61), confirming the change, using the operation key group to confirm the change; Step (S63), whether to continue setting, the control unit displays a prompt option in the display unit, if continuing, execute step (S53), otherwise execute step (S10).

Images