Alternating current speed regulation switch for electric tool

Abstract

The utility model discloses an AC speed regulation switch for an electric tool, and the switch comprises a housing, one side of which is provided with a chute; the trigger is used for starting an alternating current speed regulation switch, the trigger is arranged at the top of the shell, a spring is arranged at the bottom of the trigger and movably connected with the top of the shell, a long-strip-shaped locking block is arranged on one side of the trigger, a first magnetic sheet is installed on the outer side of the locking block, and the locking block slides in the sliding groove; the locking device comprises a locking seat and a locking part, the locking seat is arranged on one side of the shell, the locking part is rotationally arranged on the locking seat, a plurality of second magnetic sheets matched with the first magnetic sheets are arranged at the bottom of the locking part, and when the second magnetic sheets appear above the sliding grooves, the locking part is arranged on the locking seat. The locking block can be temporarily locked at the current position, and when the locking part is rotated, the first magnetic sheet loses magnetic locking of the second magnetic sheet and is driven by the spring to reset.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of alternating-current speed regulation switches, in particular to an alternating-current speed regulation switch for electric tools. BACKGROUND

[0002] Most of the alternating-current speed regulation switches on the market have a locking mechanism to lock the position of a trigger, and when the trigger is lowered, the locking mechanism often automatically locks the trigger at the current position. For example, a dustproof alternating-current speed regulation switch disclosed in an announcement CN217426611U has a locking mechanism, the locking mechanism comprises a lock shaft, a lock rod and a lock knob, the lock rod is connected with the lock knob through a lock knob spring, and the position of the trigger is automatically locked and rebounded through the lock rod and the spring. However, this locking mode is fixed, and it is relatively cumbersome for some electric tools that only need to press the trigger for a short time. If the locking structure is cancelled, it is not suitable for some situations that need to be started for a long time. Therefore, how to solve the above problems is the purpose of the application.

[0003] The above content is only used to assist in understanding the technical solutions of the application and does not represent the acknowledgement of the above content as the closest prior art to the application. SUMMARY

[0004] Based on this, the application provides an alternating-current speed regulation switch for electric tools to solve one of the above technical problems.

[0005] The technical solution adopted by the application to solve the technical problems is an alternating-current speed regulation switch for electric tools, comprising: a shell, a sliding groove is formed in one side of the shell; a trigger for starting the alternating-current speed regulation switch, the trigger is arranged at the top of the shell, a spring is arranged at the bottom of the trigger and is movably connected with the top of the shell, a long strip-shaped lock block is arranged at one side of the trigger, a first magnetic sheet is mounted on the outer side of the lock block, and the lock block slides in the sliding groove; a locking device comprising a locking seat and a locking part, the locking seat is arranged at one side of the shell, the locking part is rotatably arranged on the locking seat, a plurality of second magnetic sheets matched with the first magnetic sheets are arranged at the bottom of the locking part, when the second magnetic sheets appear above the sliding groove, the lock block can be temporarily locked at the current position, and when the locking part is rotated, the first magnetic sheets lose the magnetic force locking of the second magnetic sheets and are driven to reset by the spring.

[0006] In some embodiments, the locking part comprises a knob, a connecting rod and a rotating plate, the connecting rod is used for connecting the knob and the rotating plate, and the second magnetic sheets are mounted at the bottom of the rotating plate and away from the center of the rotating plate.

[0007] In some embodiments, a rotating groove is formed in the bottom of the locking seat, and the rotating plate rotates in the rotating groove.

[0008] In some embodiments, the top of the rotating groove is provided with an annular array of locking grooves, and a ball spring is installed in the locking groove; the other side of the first magnetic sheet of the rotating plate is provided with a spherical groove matched with the ball spring.

[0009] In some embodiments, the inner periphery of the rotating groove is provided with a ball, which is matched with the outer periphery of the rotating plate.

[0010] The application has the advantages that: by rotating the knob, the non-locking state or the unlocking can be switched; by matching the first magnetic sheet with the second magnetic sheet, when the second magnetic sheet appears above the sliding groove, the first magnetic sheet will be attracted to the second magnetic sheet after the trigger moves downward, so as to lock the position of the trigger; when the knob is rotated, the second magnetic sheet will be away from the first magnetic sheet, the first magnetic sheet will be reset by the spring at the bottom of the trigger due to the loss of magnetic attraction, at this time, the trigger can be freely pressed and will not enter the locking state, which makes the application adapt to different use environments. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0012] Figure 1 is a schematic diagram of the three-dimensional structure of the application.

[0013] Figure 2 is a schematic diagram of the locking device of the application.

[0014] Figure 3 is a schematic diagram of the bottom of the rotating plate of the application.

[0015] Figure 4 is a schematic diagram of the trigger of the application.

[0016] Explanation of reference numerals: 1, housing; 11, sliding groove; 2, trigger; 21, spring; 22, locking block; 221, first magnetic sheet; 4, locking device; 41, locking seat; 411, locking groove; 412, ball spring; 413, ball; 414, rotating groove; 415, spherical groove; 42, locking part; 421, knob; 422, connecting rod; 423, rotating plate; 424, second magnetic sheet. DETAILED DESCRIPTION

[0017] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort are within the protection scope of the present application. In addition, the technical solutions of various embodiments can be combined with each other, but the combination of the technical solutions should be based on the fact that a person of ordinary skill in the art can realize the combination, and when the combination of the technical solutions is contradictory or unachievable, it should be considered that the combination of the technical solutions does not exist and is not within the protection scope of the present application.

[0018] In the embodiments of the present application, as shown in the accompanying drawings, Figures 1-4 The present application provides an AC speed regulation switch for electric tools, mainly comprising: a shell 1, a slide groove 11 is formed on one side of the shell 1; a trigger 2 for starting the AC speed regulation switch, the trigger 2 is arranged on the top of the shell 1, a spring 21 is arranged on the bottom of the trigger 2 and is movably connected with the top of the shell 1, a long strip-shaped locking block 22 is arranged on one side of the trigger 2, a first magnetic sheet 221 is arranged on the outer side of the locking block 22, and the locking block 22 slides in the slide groove 11; a locking device 4 comprising a locking seat 41 and a locking part 42, the locking seat 41 is arranged on one side of the shell 1, the locking part 42 is rotatably arranged on the locking seat 41, a plurality of second magnetic sheets 424 cooperating with the first magnetic sheet 221 are arranged on the bottom of the locking part 42, when the second magnetic sheets 424 appear above the slide groove 11, the locking block 22 can be temporarily locked at the current position, and when the locking part 42 is rotated, the first magnetic sheet 221 loses the magnetic force locking of the second magnetic sheets 424 and is driven to reset by the spring 21.

[0019] Specifically, by rotating the locking part 42, the locking device 4 can be switched to a non-locking state or be unlocked, when the second magnetic sheets 424 appear above the slide groove 11, the trigger 2 and the locking block 22 move downward synchronously, the first magnetic sheet 221 appears below the second magnetic sheets 424, and the two attract each other to lock the position of the trigger 2, when the knob 421 is rotated, the second magnetic sheets 424 will leave the first magnetic sheet 221 and be hidden between the shell 1 and the locking seat 41, the first magnetic sheet 221 loses the magnetic force to attract the trigger 2 and is driven to reset by the spring 21 on the bottom of the trigger 2.

[0020] As an illustration, the second magnetic sheets 424 are not limited to one, a plurality of second magnetic sheets 424 can fix the trigger 2 at different heights of the stroke by changing the distance from the center, and can be used on the AC speed regulation switch using a Hall sensor and the like.

[0021] Below will continue to elaborate based on the above embodiments for some preferred / improved embodiments, the following embodiments can be selected, or combined with multiple.

[0022] Referring to Figure 2 As shown in order to enable users to change the position of the second magnetic sheet 424 by rotating, in the locking portion 42 includes a knob 421, connecting rod 422 and rotating plate 423, the connecting rod 422 for connecting the knob 421 and rotating plate 423, the second magnetic sheet 424 is installed at the bottom of the rotating plate 423 and away from the position of the center.

[0023] Specifically, the bottom of the locking seat 41 is provided with a rotating groove 414, the rotating plate 423 rotates in the rotating groove 414, the rotating groove 414 can provide the space for the rotating plate 423 to rotate.

[0024] As preferred, in order to make the rotating plate 423 after rotating will not be due to vibration or magnetic force effect caused by the second magnetic sheet 424 back to the slide slot 11 above, the top of the rotating groove 414 is provided with an annular array of locking groove 411, the locking groove 411 is installed with a ball spring 412, the other side of the rotating plate 423 is provided with a spherical groove 415 matched with the ball spring 412, when the rotating plate 423 rotates, the ball spring is compressed 412, until the next locking groove 411 to release the spring pressure.

[0025] Further, in order to assist the rotation of the rotating plate 423, the inner wall of the rotating groove 414 is installed with a ball 413, the ball 413 is used to cooperate with the outer wall of the rotating plate 423.

[0026] So far, the various embodiments of the present application have been described in detail. In order to avoid obscuring the concept of the present application, some details known in the art are not described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein according to the above description.

[0027] Finally, it should be noted that the above, only the preferred embodiments of the present application, the foregoing embodiments are used to illustrate the technical solutions of the present application, and not to limit it; although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for some technical features; and these modifications or replacements, do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An AC speed regulating switch for electric power tools, characterized by comprising: Include: The shell, one side of the shell is provided with a chute; Trigger, for starting AC speed regulation switch, the trigger is arranged on the top of the shell, the bottom of the trigger is provided with a spring and is movably connected with the top of the shell, one side of the trigger is provided with a long strip-shaped lock block, the outer side of the lock block is installed with a first magnetic sheet, the lock block slides in the chute; Locking device, including locking seat and locking part, the locking seat is arranged on one side of the shell, the locking part is rotatably arranged on the locking seat, the bottom of the locking part is provided with a plurality of second magnetic sheets matched with the first magnetic sheet, when the second magnetic sheet appears above the chute, the lock block can be temporarily locked in the current position, when the first magnetic sheet loses the magnetic force locking of the second magnetic sheet, it is driven by the spring to reset.

2. An AC speed regulating switch for electric power tools according to claim 1, wherein The locking part includes a knob, a connecting rod and a rotating plate, the connecting rod is used for connecting the knob and the rotating plate, the second magnetic sheet is installed on the bottom of the rotating plate and away from the position of the center.

3. An AC speed regulating switch for electric power tools according to claim 2, wherein The bottom of the locking seat is provided with a rotating groove, and the rotating plate rotates in the rotating groove.

4. An AC speed regulating switch for electric power tools according to claim 3, wherein The top of the rotating groove is provided with a ring array arranged locking groove, the locking groove is installed with a ball spring, the other side of the rotating plate installed with the first magnetic sheet is provided with a spherical groove matched with the ball spring.

5. An AC speed regulating switch for electric power tools according to claim 3, wherein The inner circumference of the rotating groove is installed with a ball, which is used for cooperating with the outer circumference of the rotating plate.

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