Power tool with button locking function

Abstract

The utility model relates to a power tool with a button locking function, which comprises a power tool main machine, a start-stop switch button and a reversing switch knob, the start-stop switch button and the reversing switch knob are arranged on the power tool main machine, and the start-stop switch button is arranged on the front portion of a grip of the power tool main machine. The reversing switch knobs are symmetrically arranged on the left side and the right side of the power tool main machine handle, a mounting groove is formed in the front portion of the power tool main machine handle, mounting holes are symmetrically formed in the left side and the right side of the power tool main machine, the mounting holes communicate with the mounting groove, and a linkage assembly is arranged on the start-stop switch button. The start-stop switch button is mounted on the mounting groove through a linkage assembly and is in transmission connection with the reversing switch knob through the linkage assembly; and due to the design of the linkage assembly, shutdown caused by the fact that the start-stop switch button is separated from the current working gear due to vibration of the machine is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of surgical instruments, and more particularly to a power tool with a button locking function. Background Art

[0002] As orthopedic power tools continue to develop, both the industry and users are placing increasingly stringent demands on the safety of power tools. Currently, the locking function between the start / stop switch and the reversing switch of orthopedic surgical power tools on the market, particularly orthopedic electric drills, orthopedic swing saws, orthopedic reciprocating saws, orthopedic sternal saws, and orthopedic double-trigger electric drills, is primarily achieved through the following solutions:

[0003] There's no mechanical locking mechanism between the start / stop switch and the reversing switch. The electronic control program simply identifies the reversing switch position to control the machine's forward, reverse, or safety stop. The start / stop switch can be pressed regardless of the reversing switch's position. (For orthopedic swing saws, reciprocating saws, and sternal saws, there are only two positions: on and safety stop. For orthopedic double-trigger drills, there are three positions: drilling (high speed), tapping (low speed), and safety stop.)

[0004] Defects of existing technical solutions:

[0005] 1. The reversing switch and the start / stop switch can be pressed in any gear position, and there is no clear feel to distinguish the working or insurance status;

[0006] 2. When the reversing switch is in the forward or reverse gear, pressing the start-stop switch may cause the reversing switch to deviate from the currently set gear due to vibration, causing the machine to stop working;

[0007] 3. When the reversing switch deviates from the correct forward or reverse position, the sensor can still trigger the forward or reverse working mode, and the start-stop switch can still make the machine work when it is pressed, which can easily lead to accidental injury. The utility model proposes a new solution to the above problems. Utility Model Content

[0008] In view of the problems existing in the prior art, the purpose of the present utility model is to provide a power tool with a button locking function to solve the technical problems mentioned in the background technology.

[0009] In order to solve the above problems, the present invention adopts the following technical solutions:

[0010] A power tool with a button locking function comprises a power tool main body, a start-stop switch button and a reversing switch knob arranged on the power tool main body, the start-stop switch button being arranged at the front of a handle of the power tool main body, the reversing switch knob being symmetrically arranged on the left and right sides of the handle of the power tool main body, a mounting groove being provided at the front of the handle of the power tool main body, mounting holes being symmetrically provided on the left and right sides of the power tool main body, the mounting holes being connected to the mounting groove, a linkage assembly being provided on the start-stop switch button, the start-stop switch button being mounted to the mounting groove via the linkage assembly, the start-stop switch button being transmission-connected to the reversing switch knob via the linkage assembly,

[0011] The linkage assembly includes a fixed seat, a long guide pin, a locking plate, a reset spring, a start-stop magnet 170, and a countersunk screw. The fixed seat is installed in the installation groove through the countersunk screw. The locking plate is slidably connected in the installation groove along the vertical direction, and a Z-shaped slide groove is provided on the locking plate. One end of the long guide pin is slidably connected in the Z-shaped slide groove. Two groups of through grooves are symmetrically provided on the fixed seat. The long guide pin passes through one group of through grooves on the fixed seat and is plugged into the start-stop switch button. One end of the reset spring is plugged into the start-stop switch button, and the other end of the reset spring is installed on the fixed seat. The start-stop magnet is installed to the tail of the start-stop switch button, and the start-stop magnet is matched with the magnetic switch in the power tool main body. A protrusion is fixed to the bottom of the locking plate, and two groups of lock holes are provided on the reversing switch knob, and the lock holes are matched with the protrusions.

[0012] Preferably, the reversing switch knob includes a gear adjustment dial button, a reversing switch shaft, and a reversing magnet. The reversing switch shaft passes through the mounting hole. Two groups of gear adjustment dial buttons are provided. The two groups of gear adjustment dial buttons are symmetrically installed on the two ends of the reversing switch shaft. The reversing magnet is embedded in the reversing switch shaft. The lock hole is opened on the reversing switch shaft. A ball plunger type position sensor is provided on the fixing seat. The ball plunger type position sensor is provided in conjunction with the reversing magnet.

[0013] In any of the above solutions, preferably, the gear adjustment knob is mounted on the reversing switch shaft via a cylindrical head screw.

[0014] In any of the above solutions, preferably, both ends of the reversing switch shaft are rectangular protruding shafts, and the gear adjustment knob is provided with a rectangular positioning hole, and the rectangular protruding shaft is inserted into the rectangular positioning hole.

[0015] In any of the above schemes, it is preferred that the linkage assembly also includes a short guide pin, and a guide groove is provided on the inner wall of the mounting groove at a position corresponding to the short guide pin, one end of the short guide pin passes through another set of through grooves on the fixed seat and is inserted into the guide groove, and the other end of the short guide pin is inserted into the start-stop switch button.

[0016] In any of the above solutions, preferably, a protective groove is provided on the handle of the power tool main body at the position of the gear adjustment button, and the gear adjustment button is located in the protective groove.

[0017] Compared with the prior art, the advantages of the present invention are:

[0018] The design of the linkage component in the present invention is that the start-stop switch button can be pressed to start the machine only when the reversing switch knob is completely in the forward or reverse gear position; the start-stop switch button cannot be pressed in any other non-forward or reverse gear position, which has a difference in hand feel; and when the machine is in working state (the reversing switch is in the forward or reverse state, and the start-stop switch button is pressed), the reversing switch knob is locked in the current working gear to prevent the start-stop switch button from being out of the current working gear and causing the machine to stop due to vibration; the working gear of the reversing switch can not be switched until the start-stop switch button is released; at the same time, this structure can be used on orthopedic swing saws, orthopedic reciprocating saws and orthopedic sternal saws without changing the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of a power tool with a button locking function according to the present invention;

[0020] Figure 2 Exploded diagram of the installation of this structure for an orthopedic double-trigger electric drill;

[0021] Figure 3 Schematic diagram of the structure of the locking plate;

[0022] Figure 4 It is a structural diagram of the reversing switch shaft.

[0023] Description of the numbers in the figure:

[0024] 1. Power tool main unit; 110. Start / Stop switch button; 120. Fixing seat; 130. Long guide pin; 140. Short guide pin; 150. Locking plate; 160. Return spring; 170. Start / Stop magnet; 180. Countersunk screw; 210. Gear adjustment dial; 220. Reversing switch shaft; 230. Reversing magnet; 240. Position sensor; 250. Cylindrical head screw. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0026] Example:

[0027] See also Figures 1 to 4 A power tool with a button locking function comprises a power tool main body 1, a start-stop switch button 110 and a reversing switch knob arranged on the power tool main body 1, wherein the start-stop switch button 110 is arranged at the front of the handle of the power tool main body 1, and the reversing switch knob is symmetrically arranged on the left and right sides of the handle of the power tool main body 1. The characteristics are as follows: a mounting groove is provided at the front of the handle of the power tool main body 1, and mounting holes are symmetrically provided on the left and right sides of the power tool main body 1, and the mounting holes are connected to the mounting groove. A linkage component is provided on the start-stop switch button 110, and the start-stop switch button 110 is installed on the mounting groove through the linkage component. The start-stop switch button 110 is transmission-connected to the reversing switch knob through the linkage component.

[0028] The linkage assembly includes a fixed seat 120, a long guide pin 130, a locking plate 150, a reset spring 160, a start-stop magnet 170, and a countersunk screw 180. The fixed seat 120 is installed in the installation groove through the countersunk screw 180. The locking plate 150 is slidably connected in the installation groove along the vertical direction, and a Z-shaped slide groove is provided on the locking plate 150. One end of the long guide pin 130 is slidably connected in the Z-shaped slide groove. Two sets of through grooves are symmetrically provided on the fixed seat 120. The long guide pin 130 is It is inserted into the start-stop switch button 110 through one of the through slots on the fixing base 120, one end of the return spring 160 is inserted into the start-stop switch button 110, and the other end of the return spring 160 is installed on the fixing base 120. The start-stop magnet 170 is installed to the tail of the start-stop switch button, and the start-stop magnet 170 is cooperated with the magnetic switch in the power tool host 1. A protrusion is fixed to the bottom of the locking plate 150, and two sets of lock holes are opened on the reversing switch knob, and the lock holes are cooperated with the protrusions.

[0029] In this embodiment, the reversing switch knob includes a gear adjustment dial button 210, a reversing switch shaft 220, and a reversing magnet 230. The reversing switch shaft 220 passes through the mounting hole. The gear adjustment dial button 210 is provided in two groups. The two groups of gear adjustment dial buttons 210 are symmetrically installed at both ends of the reversing switch shaft 220. The reversing magnet 230 is embedded in the reversing switch shaft 220. The lock hole is opened on the reversing switch shaft 220. A ball head plunger type position sensor 240 is provided on the fixing seat 120. The ball head plunger type position sensor 240 is provided in conjunction with the reversing magnet 230.

[0030] In this embodiment, the gear adjustment knob 210 is mounted on the reversing switch shaft 220 via a cylindrical head screw 250 .

[0031] In this embodiment, both ends of the reversing switch shaft 220 are rectangular protruding shafts, and the gear adjustment knob 210 is provided with rectangular positioning holes, into which the rectangular protruding shafts are inserted.

[0032] In this embodiment, the linkage assembly also includes a short guide pin 140, and a guide groove is opened on the inner wall of the installation groove at the position corresponding to the short guide pin 140. One end of the short guide pin 140 passes through another group of the through grooves on the fixing seat 120 and is inserted into the guide groove, and the other end of the short guide pin 140 is inserted into the start-stop switch button 110.

[0033] In this embodiment, a protection groove is provided on the handle of the power tool main body 1 at the position of the gear adjustment dial button 210 , and the gear adjustment dial button 210 is located in the protection groove.

[0034] The working process of this utility model is as follows:

[0035] For orthopedic electric drills, orthopedic swing saws, orthopedic reciprocating saws, orthopedic sternum saws, and orthopedic double-trigger electric drills, when the reversing switch 200 is in the safety stop position, the start-stop switch button 110 is pressed, and the start-stop switch button 110 moves to the left. The long guide pin 130 installed in the side hole of the start-stop switch button 110 moves to the left and abuts against the Z-shaped slide of the locking plate 150, causing the locking plate 150 to have a downward movement trend. Since the locking boss at the bottom of the locking plate 150 abuts against the arc surface above the reversing switch shaft 220, it cannot move downward, so the start-stop switch button 110 cannot be pressed;

[0036] When the start / stop switch button 110 is pressed, the protrusion at the bottom of the locking plate 150 is always in the lock hole on the reversing switch shaft 220, so that the reversing switch 200 is always kept in the current working gear and cannot be disengaged from the current gear under the action of external force, thereby preventing the reversing switch knob from being disengaged from the gear and causing the machine to stop due to machine vibration or user misoperation;

[0037] When the start / stop switch button 110 is released, the start / stop switch button 110 moves to the right under the action of the trigger return spring 160, and the long guide pin 130 installed in the side hole of the start / stop switch button 110 moves to the right, sliding against the Z-shaped slide groove of the locking plate 150, causing the locking plate 150 to move upward, and the protrusion at the bottom of the locking plate 150 disengages from the lock hole on the reversing switch shaft 220, completing the reset; the start / stop magnet 170 installed in the start / stop switch button 110 moves away from the Hall detection component in the power tool main body 1, and the Hall detection component detects the change in magnetic flux, and the machine stops; at this time, the working mode can be switched by rotating the reversing switch;

[0038] The start-stop switch button can only be pressed to start the machine when the reversing switch knob is completely in the forward or reverse gear; the start-stop switch button cannot be pressed in any other non-forward or reverse gear, which has a different feel; and when the machine is in working state (the reversing switch is in the forward or reverse state, and the start-stop switch button is pressed), the reversing switch knob is locked in the current working gear to prevent the start-stop switch button from being out of the current working gear due to the vibration of the machine, causing the machine to stop; the working gear of the reversing switch can not be switched until the start-stop switch button is released; at the same time, this structure can be used on orthopedic pendulum saws, orthopedic reciprocating saws and orthopedic sternal saws without changing the materials; when a small number of parts are added, it can be used on double-trigger orthopedic electric drills to save production costs by reducing the types of materials.

[0039] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any person skilled in the art who, within the technical scope disclosed in the present invention, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. A power tool with a button locking function, comprising a power tool main body (1), a start / stop switch button (110) and a reversing switch knob arranged on the power tool main body (1), wherein the start / stop switch button (110) is arranged at the front of a handle of the power tool main body (1), and the reversing switch knob is symmetrically arranged on the left and right sides of the handle of the power tool main body (1), characterized in that: The front part of the grip of the power tool main body (1) is provided with a mounting groove, and the left and right sides of the power tool main body (1) are symmetrically provided with mounting holes, the mounting holes are connected to the mounting groove, and the start-stop switch button (110) is provided with a linkage component, the start-stop switch button (110) is installed on the mounting groove through the linkage component, and the start-stop switch button (110) is transmission-connected to the reversing switch knob through the linkage component. The linkage assembly comprises a fixed seat (120), a long guide pin (130), a locking plate (150), a reset spring (160), a start-stop magnetic steel (170), and a countersunk screw (180). The fixed seat (120) is installed in the installation groove through the countersunk screw (180). The locking plate (150) is slidably connected in the installation groove along the vertical direction, and a Z-shaped sliding groove is provided on the locking plate (150). One end of the long guide pin (130) is slidably connected in the Z-shaped sliding groove. Two groups of through grooves are symmetrically provided on the fixed seat (120). The long guide pin (130) is symmetrically connected to the Z-shaped sliding groove. 30) is inserted into the start-stop switch button (110) through one of the through slots on the fixing seat (120), one end of the reset spring (160) is inserted into the start-stop switch button (110), and the other end of the reset spring (160) is installed on the fixing seat (120), the start-stop magnet (170) is installed on the tail of the start-stop switch button, and the start-stop magnet (170) is arranged in coordination with the magnetic switch in the power tool main body (1), a protrusion is fixed on the bottom of the locking plate (150), and two sets of lock holes are opened on the reversing switch knob, and the lock holes are arranged in coordination with the protrusions.

2. A power tool with a button locking function according to claim 1, characterized in that: The reversing switch knob comprises a gear adjustment dial button (210), a reversing switch shaft (220), and a reversing magnetic steel (230). The reversing switch shaft (220) passes through the mounting hole. The gear adjustment dial button (210) is provided in two groups. The two groups of gear adjustment dial buttons (210) are symmetrically mounted on the two ends of the reversing switch shaft (220). The reversing magnetic steel (230) is embedded in the reversing switch shaft (220). The lock hole is opened on the reversing switch shaft (220). A ball head plunger type position sensor (240) is provided on the fixing seat (120). The ball head plunger type position sensor (240) is matched with the reversing magnetic steel (230).

3. A power tool with a button locking function according to claim 2, characterized in that: The gear adjustment dial button (210) is mounted on the reversing switch shaft (220) via a cylindrical head screw (250).

4. A power tool with a button locking function according to claim 2, characterized in that: The two ends of the reversing switch shaft (220) are rectangular protruding shafts, and the gear adjustment dial button (210) is provided with a rectangular positioning hole, and the rectangular protruding shaft is inserted into the rectangular positioning hole.

5. A power tool with a button locking function according to claim 1, characterized in that: The linkage assembly also includes a short guide pin (140), a guide slot is provided on the inner wall of the installation slot at a position corresponding to the short guide pin (140), one end of the short guide pin (140) passes through another group of through slots on the fixing seat (120) and is inserted into the guide slot, and the other end of the short guide pin (140) is inserted into the start-stop switch button (110).

6. A power tool with a button locking function according to claim 2, characterized in that: A protection groove is provided on the handle of the power tool main body (1) at the position of the gear adjustment dial button (210), and the gear adjustment dial button (210) is located in the protection groove.

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