Non-contact electric tool button

Abstract

The invention provides a non-contact type electric tool button. The non-contact type electric tool button comprises a shaft center, a flexible rubber hose, a plug pin piece, a sliding base, a magnet, a spring, a PVB plate with an induction chip, an inner protective cover, an outer rear cover, an outer base and a mounting plate. The outer rear cover and the outer base cover to form a first assembly space; the bolt piece, the sliding seat, the magnet, the spring, the PVB plate, the inner shield and the mounting plate are all arranged in the first assembly space; the mounting plate is mounted at the bottom of the inner shield to form a second assembly space; the bolt piece, the sliding seat, the magnet, the spring and the PVB plate are all arranged in the second assembly space; the anti-vibration device has a good anti-vibration effect and a good function of preventing dust, oil stain, water vapor and salt mist, reliability and sensitivity are high, and the service life is directly prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of electric tool buttons, and in particular to a non-contact electric tool button. Background Art

[0002] China Authorization Announcement No. CN213277912U, Authorization Announcement Date May 25, 2021, Invention Name: A Magnetic Rotary Button Switch, including a housing, a sensing component and a push rod, the housing is hollow and formed with a receiving cavity, the sensing component is arranged in the receiving cavity, the housing is also provided with an insertion hole to form conduction with the receiving cavity, the push rod is movably arranged on the insertion hole, the sensing component includes a magnetic plate, an isolation plate and an FPC circuit board, the isolation plate is arranged between the magnetic plate and the FPC circuit board, the FPC board extends out of the housing and forms a pin, the magnetic plate is attached to the housing, a magnet is arranged on the push rod, the magnet is arranged in the receiving cavity, the magnet moves toward or away from the sensing component to form the closing or disconnection of the switch, and a reset spring for resetting the push rod is also in contact with the outer wall of the housing. It has a simple structure, which is conducive to implementation and use promotion. The defects of the prior art are: lack of stability, and in the face of relatively harsh use environment, it is easy to cause the accumulation of oil, dust, water vapor and salt mist, which affects the sensitivity of the sensor and shortens the service life. In view of this situation, it is urgent to solve it. Summary of the invention

[0003] In view of the above problems, the present invention provides a non-contact electric tool button, which has good anti-vibration effect, and has good anti-dust, oil, water vapor and salt spray functions, high reliability and sensitivity, and directly improves service life.

[0004] To achieve the above-mentioned purpose, the present invention solves the problem through the following technical solutions: a non-contact electric tool button, comprising an axis, a soft rubber tube, a latch, a slide seat, a magnet, a spring, a PVB board with a sensing chip, an inner shield, an outer rear cover, an outer base, and a mounting plate; the outer rear cover and the outer base cover are arranged to form a first assembly space; the latch, the slide seat, the magnet, the spring, the PVB board, the inner shield, and the mounting plate are all arranged in the first assembly space; the mounting plate is installed at the bottom of the inner shield to form a second assembly space; the latch, the slide seat, the magnet, the spring, and the PVB board are all arranged in the second assembly space;

[0005] The PVB board is mounted on the upper surface of the mounting plate, the latch is mounted on one side of the upper surface of the PVB board, the slide is arranged above the PVB board, the magnet is mounted on the bottom of the slide and its position corresponds to the PVB board, and a gap is formed between the magnet and the PVB board; a first receiving groove for the spring to extend into is opened on one side of the slide, one end of the spring extends into the first receiving groove and contacts with the first receiving groove, and the other end of the spring contacts with the inner shield;

[0006] A second receiving groove for inserting the axis is provided on the other side of the slide seat opposite to the first receiving groove, the first receiving groove and the second receiving groove are coaxially arranged, one side of the axis is inserted into the second receiving groove from the outside and connected to the slide seat through a positioning pin; the axis and the positioning pin form a vertical relationship;

[0007] The soft rubber tube is sleeved on the outer surface of the axis, and a limiting boss is formed on the side of the axis away from the sliding seat. One side of the soft rubber tube extends into the first assembly space and contacts the inner shield, and the other side of the soft rubber tube contacts the limiting boss; the axis drives the position of the magnet on the PVB board to change through the sliding seat to realize the on and off of the switch.

[0008] Preferably, a spring supporting protrusion is provided on the mounting plate and located below the spring.

[0009] Preferably, the slide seat is provided with a positioning hole for accommodating the positioning pin.

[0010] Preferably, a guide ring is formed on the side of the inner shield close to the axis, and the outer diameter of the axis is equal to the inner diameter of the guide ring.

[0011] Preferably, one side of the soft rubber tube is sleeved on the outer side of the guide ring, and the inner diameter of the soft rubber tube is equal to the outer diameter of the guide ring away from the inner shield.

[0012] Preferably, the free end of the axis forms a positioning end with a hexagonal cross-section, and the outer side surface of the positioning end is sleeved with a cap; the outer side surface of the positioning end is formed with a plurality of first fastening protrusions, and the cap is provided with a plurality of first fastening holes that cooperate with the first fastening protrusions.

[0013] Preferably, the sensing chip is configured as a Hall chip or a TMR chip.

[0014] Preferably, the outer base is formed with an extended convex edge inserted into the outer rear cover; the outer side surface of the extended convex edge is in contact with the inner side wall of the outer rear cover.

[0015] Preferably, the outer edge of the mounting plate is formed in a stepped shape, and the bottom of the inner shield is formed with an engaging groove that matches the outer edge of the mounting plate.

[0016] Preferably, a second fastening protrusion is provided on the outer side surface of the extended convex edge, and a second buckle hole cooperating with the second fastening protrusion is opened at a position of the outer back cover corresponding to the second fastening protrusion.

[0017] The beneficial effects of the present invention are as follows: the outer rear cover and the outer base cover are arranged to form a first assembly space, the mounting plate is installed at the bottom of the inner shield to form a second assembly space, the latch member, the slide seat, the magnet, the spring, and the PVB board are all arranged in the second assembly space, ensuring that the structure has good anti-vibration and anti-shake effects, and the structure of the double assembly space effectively prevents dust, oil, water vapor and salt spray from entering the second assembly space, and combined with the non-contact control structure, the structure has high reliability and sensitivity, which directly improves the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional view of the present invention.

[0019] Figure 2 It is an exploded view of the present invention.

[0020] Figure 3 It is a cross-sectional view of the present invention.

[0021] The accompanying drawings are marked as follows: inner shield 10, axis 18, soft rubber tube 17, latch member 13, slide seat 20, magnet 22, spring 14, PVB board 23, outer back cover 15, outer base 11, mounting plate 21, positioning pin 12, positioning socket 16, sleeve cap 19, first fastening protrusion 24, first buckle hole 25, first receiving groove 26, spring support protrusion 27, second receiving groove 28, limiting boss 29, guide ring 30, positioning end 31, extension flange 32, second fastening protrusion 33, second buckle hole 34. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below in conjunction with examples and drawings, but the embodiments of the present invention are not limited thereto.

[0023] Reference Figure 1-3As shown: a non-contact electric tool button, including an axis 18, a soft rubber tube 17, a latch 13, a slide 20, a magnet 22, a spring 14, a PVB board 23 with a sensing chip, an inner shield 10, an outer back cover 15, an outer base 11, and a mounting plate 21. The sensing chip is set as a Hall chip or a TMR chip. The outer back cover 15 and the outer base 11 are set to form a first assembly space; the latch 13, the slide 20, the magnet 22, the spring 14, the PVB board 23, the inner shield 10, and the mounting plate 21 are all set in the first assembly space; the mounting plate 21 is installed at the bottom of the inner shield 10 to form a second assembly space; the latch 13, the slide 20, the magnet 22, the spring 14, and the PVB board 23 are all set in the second assembly space;

[0024] The PVB board 23 is mounted on the upper surface of the mounting plate 21, and the latch member 13 is mounted on one side of the upper surface of the PVB board 23, and the plug end of the latch member 13 is exposed outside the first assembly space; the slide 20 is arranged above the PVB board 23, and the magnet 22 is mounted on the bottom of the slide 20 and its position corresponds to the PVB board 23, and a gap is formed between the magnet 22 and the PVB board 23; a first receiving groove 26 for the spring 14 to extend into is opened on one side of the slide 20, one end of the spring 14 extends into the first receiving groove 26 and contacts the first receiving groove 26, and the other end of the spring 14 contacts the inner shield 10;

[0025] A second receiving groove 28 for inserting the shaft 18 is provided on the other side of the slide 20 opposite to the first receiving groove 26. The first receiving groove 26 and the second receiving groove 28 are coaxially arranged. One side of the shaft 18 is inserted into the second receiving groove 28 from the outside and connected to the slide 20 through the positioning pin 12. The slide 20 is provided with a positioning hole 16 for receiving the positioning pin 12. The shaft 18 and the positioning pin 12 are in a vertical relationship.

[0026] The soft rubber tube 17 is sleeved on the outer surface of the shaft 18. A limiting boss 29 is formed on the side of the shaft 18 away from the slide 20. One side of the soft rubber tube 17 extends into the first assembly space and contacts the inner shield 10. The other side of the soft rubber tube 17 contacts the limiting boss 29.

[0027] The shaft 18 drives the magnet 22 to change its position on the PVB board 23 through the slide 20 to realize the on and off of the switch.

[0028] Preferably, a spring support protrusion 27 is provided on the mounting plate 21 and located below the spring 14 , and the spring support protrusion 27 provides a supporting force to the spring 14 to ensure that the spring 14 will not be displaced or offset when pressed.

[0029] Preferably, a guide ring 30 is formed on the side of the inner shield 10 close to the axis 18, and the outer diameter of the axis 18 is equal to the inner diameter of the guide ring 30. By providing the guide ring 30, the stability of the button during operation is improved, and shaking or deviation is prevented, thereby improving the control accuracy. One side of the soft rubber tube 17 is sleeved on the outer side of the guide ring 30, and the inner diameter of the soft rubber tube 17 is equal to the outer diameter of the side of the guide ring 30 away from the inner shield 10. Through such a structural setting, the sealing degree between the soft rubber tube 17 and the guide ring 30 is improved.

[0030] Preferably, the free end of the shaft 18 forms a positioning end 31 with a hexagonal cross section, and the outer side surface of the positioning end 31 is sleeved with a cap 19. The outer side surface of the positioning end 31 is formed with a plurality of first fastening protrusions 24, and the cap 19 is provided with a plurality of first buckle holes 25 that cooperate with the first buckle protrusions 24. The cooperation between the first buckle protrusions 24 and the first buckle holes 25 improves the convenience of assembly.

[0031] Preferably, the outer base 11 is formed with an extended flange 32 inserted into the outer rear cover 15; the outer side surface of the extended flange 32 is in contact with the inner side wall of the outer rear cover 15. Through such a structural arrangement, the sealing degree of the first assembly space is further improved.

[0032] Preferably, the outer edge of the mounting plate 21 is stepped, and the bottom of the inner shield 10 is formed with an engaging groove that matches the outer edge of the mounting plate 21. Through such a structural arrangement, the sealing degree of the second assembly space is further improved.

[0033] Preferably, a second fastening protrusion 33 is provided on the outer side of the extending convex edge 32, and a second fastening hole 34 matching with the second fastening protrusion 33 is provided at a position of the outer rear cover 15 corresponding to the second fastening protrusion 33. With such a structural setting, the assembly of the outer rear cover 15 and the outer base 11 is facilitated, and the assembly speed is improved.

[0034] In this embodiment, the outer rear cover and the outer base cover are arranged to form a first assembly space, the mounting plate is installed at the bottom of the inner shield to form a second assembly space, the latch parts, sliding seats, magnets, springs, and PVB boards are all arranged in the second assembly space, ensuring that the structure has good anti-vibration and anti-shake effects, and the double assembly space structure effectively prevents dust, oil, water vapor and salt spray from entering the second assembly space, and combined with the non-contact control structure, the reliability and sensitivity of the structure are high, which directly improves the service life.

[0035] The above embodiment only expresses one implementation mode of the present invention, and its description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A non-contact electric tool button, characterized in that: It comprises an axis (18), a soft rubber tube (17), a latch (13), a slide seat (20), a magnet (22), a spring (14), a PVB board with a sensor chip (23), an inner shield (10), an outer rear cover (15), an outer base (11), and a mounting plate (21); The outer rear cover (15) and the outer base (11) are covered to form a first assembly space; the latch member (13), the slide seat (20), the magnet (22), the spring (14), the PVB board (23), the inner shield (10), and the mounting plate (21) are all arranged in the first assembly space; the mounting plate (21) is installed at the bottom of the inner shield (10) to form a second assembly space; the latch member (13), the slide seat (20), the magnet (22), the spring (14), and the PVB board (23) are all arranged in the second assembly space; The PVB board (23) is mounted on the upper surface of the mounting plate (21), the latch member (13) is mounted on one side of the upper surface of the PVB board (23), the slide seat (20) is arranged above the PVB board (23), the magnet (22) is mounted on the bottom of the slide seat (20) and its position corresponds to the PVB board (23), and a gap is formed between the magnet (22) and the PVB board (23); a first receiving groove (26) for the spring (14) to extend into is provided on one side of the slide seat (20), one end of the spring (14) extends into the first receiving groove (26) and contacts the first receiving groove (26), and the other end of the spring (14) contacts the inner shield (10); A second receiving groove (28) for inserting the shaft (18) is provided on the other side of the slide seat (20) opposite to the first receiving groove (26); the first receiving groove (26) and the second receiving groove (28) are coaxially arranged; one side of the shaft (18) is inserted into the second receiving groove (28) from the outside and connected to the slide seat (20) through a positioning pin (12); the shaft (18) and the positioning pin (12) are in a vertical relationship; The soft rubber tube (17) is sleeved on the outer surface of the shaft (18), and a limiting boss (29) is formed on the side of the shaft (18) away from the slide seat (20). One side of the soft rubber tube (17) extends into the first assembly space and contacts the inner shield (10), and the other side of the soft rubber tube (17) contacts the limiting boss (29); The axis (18) drives the magnet (22) to change its position on the PVB board (23) via the slide seat (20) to realize the on and off of the switch.

2. A non-contact electric tool button according to claim 1, characterized in that: A spring supporting protrusion (27) is provided on the mounting plate (21) and located below the spring (14).

3. A non-contact electric tool button according to claim 1, characterized in that: The slide seat (20) is provided with a positioning insertion hole (16) for accommodating the positioning pin (12).

4. A non-contact electric tool button according to claim 1, characterized in that: A guide ring (30) is formed on the side of the inner shield (10) close to the shaft center (18), and the outer diameter of the shaft center (18) is equal to the inner diameter of the guide ring (30).

5. A non-contact electric tool button according to claim 4, characterized in that: One side of the soft rubber tube (17) is sleeved on the outer side of the guide ring (30), and the inner diameter of the soft rubber tube (17) is equal to the outer diameter of the side of the guide ring (30) away from the inner protective cover (10).

6. A non-contact electric tool button according to any one of claims 1 to 5, characterized in that: The free end of the axis (18) forms a positioning end (31) with a hexagonal cross section, and the outer side surface of the positioning end (31) is sleeved with a cap (19); the outer side surface of the positioning end (31) is formed with a plurality of first fastening protrusions (24), and the cap (19) is provided with a plurality of first fastening holes (25) that cooperate with the first fastening protrusions (24).

7. A non-contact electric tool button according to claim 6, characterized in that: The sensing chip is configured as a Hall chip or a TMR chip.

8. The non-contact electric tool button according to claim 1, characterized in that: The outer base (11) is formed with an extended convex edge (32) inserted into the outer rear cover (15); the outer side surface of the extended convex edge (32) is in contact with the inner side wall of the outer rear cover (15).

9. The non-contact electric tool button according to claim 1, characterized in that: The outer edge of the mounting plate (21) is formed in a stepped shape, and the bottom of the inner shield (10) is formed with an engaging groove that matches the outer edge of the mounting plate (21).

10. The non-contact electric tool button according to claim 8, characterized in that: A second fastening protrusion (33) is arranged on the outer side surface of the extending protrusion (32), and a second fastening hole (34) cooperating with the second fastening protrusion (33) is opened at a position of the outer rear cover (15) corresponding to the second fastening protrusion (33).

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