Forward and reverse rotation control mechanism of brushless switch

Abstract

The forward and reverse rotation control mechanism comprises a shell, a reversing box and a reversing deflector rod, the reversing box and the reversing deflector rod are mounted on one side of the shell, a trigger is arranged at the top of the shell, the reversing deflector rod can shift different gears of the reversing box through shifting, a rotating shaft is arranged in the reversing box, and the rotating shaft is connected with the reversing box through a rotating shaft. The reversing deflector rod is composed of a deflector rod part and a reversing part, the reversing part is arranged in the reversing box and rotationally connected with the rotating shaft, at least one part of the deflector rod part extends out of the trigger, the deflector rod part comprises a deflector rod shell, a button and an ejector rod, the other end, connected with the button, of the ejector rod is provided with a lock column, and the lock column is connected with the button. The locking column is sleeved with a spring, one end of the spring abuts against the ejector rod, the other end of the spring abuts against an abutting plate arranged in the shifting rod shell, and the locking column can be inserted into the rotating shaft to be used for fixing gears of the reversing box.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric tool switch, in particular to a positive and reverse rotation control mechanism of brushless switch. BACKGROUND

[0002] At present, the AC speed regulating switch on the market is often large in size, causing the electric tool handle to be designed relatively thick. Since the palms of Asians are generally small, it is easy for the hand to get tired when holding the electric tool. The dustproof performance of the currently used AC trigger speed regulating switch is poor, which affects the service life of the switch. When dust enters the inside of the switch, internal short circuit is easily caused, and in severe cases, fire may be caused, affecting personal and property safety.

[0003] Based on this, the applicant proposes a dustproof AC speed regulating switch with publication number CN217426611U, which makes the AC speed regulating switch smaller in size, enabling the electric tool handle to be designed more small and easy to hold without being easily dropped. The switch has a reversing assembly, which includes a reversing box and a reversing lever. One end of the reversing lever is placed inside the reversing box, and the other end extends out of the trigger. Such reversing structure can switch the gears inside the reversing box. However, in the non-use state, the phenomenon of accidentally touching the lever may occur. If not paid attention to in time, the electric tool itself may be damaged. Therefore, how to fix the different gears of the reversing lever is the purpose of the present application.

[0004] The above content is only used to assist in understanding the technical solutions of the present application and does not represent the acknowledgement of the above content as the closest prior art to the present application. SUMMARY

[0005] Based on this, the present application provides a positive and reverse rotation control mechanism of brushless switch to solve one of the above technical problems.

[0006] The technical scheme adopted by the application to solve its technical problems is a positive and reverse rotation control mechanism of a brushless switch, comprising: a shell, a commutating box mounted on one side of the shell, and a commutating lever, a trigger is arranged on the top of the shell, the commutating lever can convert different gears of the commutating box by being pulled, a rotating shaft is arranged in the commutating box, the commutating lever is composed of a lever part and a commutating part, the commutating part is arranged in the commutating box and is rotationally connected with the rotating shaft, at least a part of the lever part extends out of the trigger, the lever part comprises a lever shell, a button, and a top rod, a plurality of guide grooves in a circumferential array are formed on the inner wall of the lever shell, a first step and a second step are arranged between two of the guide grooves, a plurality of first locking blocks in a circumferential array are arranged below the button, the number of the first locking blocks is twice the number of the guide grooves, half of the first locking blocks can slide in the guide grooves, the bottom of the button is rotationally provided with the top rod, a plurality of second locking blocks in a circumferential array are arranged on the outer periphery of the top rod, the number of the second locking blocks corresponds to the number of the guide grooves, the second locking blocks can be driven by the first locking blocks, a locking column is arranged at the other end of the top rod connected with the button, a spring is sleeved on the locking column, one end of the spring abuts against the top rod, and the other end of the spring abuts against a resisting plate arranged in the lever shell, and the locking column can be inserted into the rotating shaft to fix the gears of the commutating box.

[0007] In some embodiments, the commutating part and the lever part are fixed at an angle.

[0008] In some embodiments, the first locking blocks sliding in the guide grooves have a greater thickness than the remaining first locking blocks.

[0009] In some embodiments, the first step and the second step are in an acute angle, and one end of the first locking blocks and the second locking blocks is triangular.

[0010] In some embodiments, the top of the second locking blocks is formed with an oblique abutting surface for clamping on the first step and the second step.

[0011] In some embodiments, a plurality of slot holes corresponding to the number of gears of the commutating box are formed on the rotating shaft, and one end of the locking column can enter the slot holes.

[0012] The application has the beneficial effect that the gear locking and unlocking functions can be simultaneously completed by driving a single button, the locking and unlocking mode is relatively simple, in the non-locking state, the second locking blocks enter between the first step and the second step by pressing the button, the locking column moves downward and enters the rotating shaft, and the first locking blocks not sliding in the guide grooves drive the second locking blocks arranged on the first step and the second step to return to the guide grooves, so that the locking column leaves the rotating shaft, and the gear locking can be completed by only a single button, which is very flexible. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced. Obviously, the drawings in the following description only represent some of the embodiments of the present application. All other embodiments obtained by a person of ordinary skill in the art without creative effort based on the embodiments in the present application shall fall within the protection scope of the present application. In addition, the technical solutions among the various embodiments can be combined with each other, but the combination of the technical solutions should be considered not to exist and not to fall within the protection scope of the present application when the combination of the technical solutions appears to be contradictory or unachievable.

[0014] Figure 1 is a perspective structural schematic diagram of the present application.

[0015] Figure 2 is a front view partial cross-sectional schematic diagram of the present application.

[0016] Figure 3 is a perspective structural schematic diagram of the reversing lever of the present application.

[0017] Figure 4 is a schematic diagram of the internal structure of the lever part in an unlocking state of the present application.

[0018] Figure 5 is a schematic diagram of the internal structure of the lever part in a locking state of the present application.

[0019] Figure 6 is a schematic diagram of the internal structure of the lever part in an exploded state of the present application.

[0020] Brief description of the drawings: 1, housing; 11, trigger; 2, reversing box; 21, rotating shaft; 3, reversing lever; 31, lever part; 311, lever shell; 3111, guide groove; 3112, first step; 3113, second step; 3114, abutting plate; 312, button; 3121, first locking block; 313, top rod; 3131, second locking block; 3132, oblique abutting surface; 314, locking column; 315, spring; 32, reversing part. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be described clearly and completely in the following description with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments only represent some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort shall fall within the protection scope of the present application. In addition, the technical solutions among the various embodiments can be combined with each other, but the combination of the technical solutions should be considered not to exist and not to fall within the protection scope of the present application when the combination of the technical solutions appears to be contradictory or unachievable.

[0022] In the embodiments of the present application, please refer to Figures 1-6The application provides a brushless switch positive and negative rotation control mechanism, which mainly comprises a shell 1, a commutation box 2 and a commutation lever 3 installed on one side of the shell 1, a trigger 11 arranged on the top of the shell 1, the commutation lever 3 can convert different gears of the commutation box 2 by being poked, a rotating shaft 21 arranged in the commutation box 2, the commutation lever 3 is composed of a lever part 31 and a commutation part 32, the commutation part 32 is arranged in the commutation box 2 and is rotationally connected with the rotating shaft 21, at least a part of the lever part 31 extends out of the trigger 11, the lever part 31 comprises a lever shell 311, a button 312 and a top rod 313, a plurality of guide grooves 3111 in a circumferential array are formed in the inner wall of the lever shell 311, a first step 3112 and a second step 3113 are arranged between two guide grooves 3111, a plurality of first locking blocks 3121 in a circumferential array are arranged below the button 312, the number of the first locking blocks 3121 is twice the number of the guide grooves 3111, half of the first locking blocks 3121 can slide in the guide grooves 3111, the bottom of the button 312 is rotationally provided with the top rod 313, a plurality of second locking blocks 3131 in a circumferential array are arranged on the outer periphery of the top rod 313, the number of the second locking blocks 3131 corresponds to the number of the guide grooves 3111, the second locking blocks 3131 can be driven by the first locking blocks 3121, a lock column 314 is arranged at the other end of the button 312 and connected with the top rod 313, a spring 315 is sleeved on the lock column 314, one end of the spring 315 abuts against the top rod 313, and the other end of the spring 315 abuts against an abutting plate 3114 arranged in the lever shell 311, the lock column 314 can be inserted into the rotating shaft 21 and used for fixing the gear of the commutation box 2.

[0023] Specifically, when the commutation part 32 is in the non-locking state after rotation, the button 312 is pressed, the first locking blocks 3121 in the guide grooves 3111 drive the second locking blocks 3131 below the first locking blocks 3121 to move downward along the guide grooves 3111, the lock column 314 enters the rotating shaft 21 under the current gear, and the spring 315 is compressed, at the same time, with the downward movement of the second locking blocks 3131 and the disengagement of the second locking blocks 3131 from the range of the guide grooves 3111, the second locking blocks 3131 enter the path between the first step 3112 and the second step 3113 along the first step 3112 under the action of the spring 315, at this time, the lock column 314 is always arranged in the rotating shaft 21, the remaining first locking blocks 3121 fall from above the first step 3112 and the second step 3113, and the second locking blocks 3131 are driven to fall again, until the second locking blocks 3131 are out of the range of the second step 3113, under the action of the spring 315, the second locking blocks 3131 return to the guide grooves 3111, the lock column 314 is separated from the rotating shaft 21, and the commutation lever 3 can be normally poked to switch gears.

[0024] As an illustration, the reversing principle of the reversing box specifically refers to the dustproof alternating current speed regulating switch disclosed in CN217426611U or the compact structure alternating current speed regulating switch disclosed in CN217606730U, and the reversing principle of the reversing box is a well-known technology in the art, so it will not be described in detail.

[0025] The following will continue to elaborate some preferred / modified embodiments based on the above-mentioned embodiments, the following embodiments can be selected or combined.

[0026] Specifically, in order to ensure that the lever portion 31 can at least partially extend out of the trigger 11 and not affect the trigger 11, the lever portion 31 and the reversing portion 32 are fixed at a certain angle.

[0027] Referring to Figures 4-5 The thickness of the first lock block 3121 sliding in the guide groove 3111 is higher than that of the remaining first lock blocks 3121, which is set to ensure that the first lock block 3121 sliding in the guide groove 3111 cannot be separated from the guide groove 3111 and rotated, and to enable the first lock block 3121 not in the guide groove 3111 to drive the second lock block 3131 between the first step 3112 and the second step 3113 to descend when the lock column 314 is in the locked state, so that the lock column 314 can be unlocked from the rotating shaft 21.

[0028] As a preferred, in order to enable the second lock block 3131 to automatically slide into the first step 3112 and the second step 3113 when it is separated from the guide groove 3111, and to ensure that the first lock block 3121 can effectively drive the second lock block 3131, the angle between the first step 3112 and the second step 3113 is an acute angle, and the end of the first lock block 3121 cooperating with the second lock block 3131 is triangular.

[0029] Referring to Figure 6 As shown, the top of the second lock block 3131 is formed with a diagonal abutting surface 3132 for clamping on the first step 3112 and the second step 3113. The diagonal abutting surface 3132 can facilitate sliding into the first step 3112 and the second step 3113, and can form cooperation with the triangular abutting surface of the first lock block 3121.

[0030] As an illustration, in order to enable the lock column 314 to lock different gears of the reversing box 2, a groove corresponding to the number of gears of the reversing box 2 is formed on the rotating shaft 21, and one end of the lock column 314 can enter the groove.

[0031] So far, 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.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present application, and the foregoing embodiments are only used to illustrate the technical solutions of the present application, not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that the technical solutions described in the foregoing embodiments can still be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A brushless switching forward-reverse control mechanism characterized by comprising: The utility model relates to a shell and the reversing box and reversing lever of installation in one side of shell are included, the shell top is provided with trigger, reversing lever can pass through the different gear of reversing box is converted by dialing, the reversing box is provided with rotating shaft inside, reversing lever is composed by dialing lever portion and reversing portion, reversing portion places inside reversing box and rotates the connection with rotating shaft, dialing lever portion at least one part protrudes trigger, dialing lever portion includes dialing lever shell, button, jacks, the inner wall of dialing lever shell is equipped with the circumference array a plurality of guide grooves, and is provided with first ladder and second ladder between two guide grooves, the outer periphery of button below is distributed with the first lock block of two times number of guide groove, half number first lock block can slide in guide groove, the bottom of button is rotatably provided with jacks, the outer periphery of jacks is distributed with the second lock block corresponding with the number of guide groove, second lock block can be driven by first lock block, the other end of jacks connected button is provided with lock post, lock post is sleeved with spring, one end of spring abuts on jacks, and the other end abuts on the resisting plate set up in dialing lever shell, lock post can be inserted in rotating shaft for fixing the gear of reversing box. The dialing lever portion and the reversing portion are fixed at a certain angle.

2. A brushless switching mechanism for forward and reverse rotation control according to claim 1, characterized in that, The thickness of the first lock block sliding in the guide groove is higher than that of the remaining first lock blocks.

3. The brushless switching mechanism for forward and reverse rotation control according to claim 1, wherein The angles of the first ladder and the second ladder are acute, and the end of the first lock block cooperating with the second lock block is triangular.

4. The brushless switching mechanism for forward and reverse rotation control according to claim 1, characterized in that, The top of the second lock block forms an oblique abutting surface for clamping on the first ladder and the second ladder.

5. The brushless switching mechanism for forward and reverse rotation control according to claim 1, characterized in that, The rotating shaft is provided with a slot hole corresponding to the number of gears of the reversing box, and one end of the lock post can enter the slot hole.

6. A brushless switching mechanism for forward and reverse rotation control according to claim 1, wherein ​

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