Knob sucker

Abstract

The rotary knob suction cup comprises a shell, a first through hole penetrating up and down is formed in the shell, magnetic steel is arranged in the first through hole, and the magnetic steel comprises fixed magnetic steel and rotary magnetic steel which are overlapped with each other. According to the rotary knob suction cup, the fixed magnetic steel and the rotary magnetic steel which are overlapped with each other are arranged, the rotary magnetic steel is linked with the rotary knob device, and the rotary magnetic steel can rotate clockwise by 180 degrees or anticlockwise by 180 degrees relative to the fixed magnetic steel through the main shaft, the self-locking cover and the self-locking plate of the rotary knob device. Magnetic flux superposition or magnetic flux offset can occur between the rotating magnetic steel and the fixed magnetic steel, so that generation and disappearance of magnetic attraction force are achieved, and objects are convenient to carry and unload during working; the self-locking cover is provided with a protruding pin which protrudes downwards and is matched with the clamping groove of the self-locking piece, when the N pole or the S pole of the rotating magnetic steel and the N pole or the S pole of the fixed magnetic steel are located on the same side, the self-locking piece is forced to be pushed upwards by the spring, when the clamping groove is opposite to the protruding pin, the clamping groove can be matched with the protruding pin, and it is guaranteed that the suction cup has stable magnetic suction force.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of permanent magnet chuck, especially a knob chuck. BACKGROUND

[0002] Permanent magnet chuck is often used in some manufacturing industry, for example, carrying goods. The following shortcomings exist in the operation process of traditional permanent magnet chuck: 1. It needs larger operating force; 2. The adjustment of adsorption force is not flexible enough; 3. There may be problems such as inconvenience in operation and magnetic force cannot be shielded during adsorption and release. SUMMARY

[0003] The utility model provides a knob chuck.

[0004] The utility model solves the above-mentioned technical problem by adopting the technical scheme that

[0005] A knob chuck includes a housing, a first through hole is provided in the housing and extends vertically, a magnetic steel is provided in the first through hole, the magnetic steel includes a fixed magnetic steel and a rotating magnetic steel which are stacked with each other, the fixed magnetic steel is fixed in the first through hole, the rotating magnetic steel is arranged above the fixed magnetic steel, the rotating magnetic steel is provided with two first mounting holes in the radial direction, a knob device is connected to the upper side of the rotating magnetic steel, the knob device includes a handle, a main shaft, a self-locking cover and a self-locking piece which are arranged from top to bottom, the self-locking cover is fitted on the housing, a second through hole is provided in the center of the self-locking cover, the main shaft is fixedly connected to the self-locking piece through the second through hole, a first sliding groove and a second sliding groove are provided on the inner side of the self-locking cover and are opposite to the two first mounting holes respectively, the first sliding groove and the second sliding groove are both arc-shaped and are oppositely staggered, the self-locking piece is provided with two second mounting holes in the radial direction and opposite to the first sliding groove and the second sliding groove, transmission pins are arranged in the two first mounting holes and the second mounting holes and are fitted with the first sliding groove and the second sliding groove respectively, and the two transmission pins are located at two opposite end points of the first sliding groove and the second sliding groove respectively.

[0006] Preferably, a third through hole is provided in the center of the self-locking piece, a spring is arranged in the third through hole, one end of the spring abuts against the upper end of the rotating magnetic steel, and the other end of the spring abuts against the main shaft, a fixing groove is further provided on the inner side of the self-locking cover, a clamping groove is provided on the self-locking piece and opposite to the fixing groove, and a protruding pin is provided on the fixing groove and protrudes downward and is fitted with the clamping groove.

[0007] Preferably, an iron sheet is arranged between the rotating magnetic steel and the fixed magnetic steel, and the fixed magnetic steel and the rotating magnetic steel can each include a plurality of permanent magnets.

[0008] Preferably, the housing is a magnetic conductor and is made of metal.

[0009] Preferably, the handle and the main shaft are arranged perpendicularly and are fixed by screws.

[0010] Preferably, the self-locking cover is fixed on the shell by screws.

[0011] Preferably, the bottom of the main shaft is concave and provided with a groove.

[0012] Preferably, the arc angle of the first sliding groove and the second sliding groove is 180 degrees.

[0013] Preferably, the upper end of the spring abuts in the groove.

[0014] Preferably, the handle can be further provided with anti-skid lines or anti-skid protrusions.

[0015] Compared with the prior art, the knob suction cup has the following advantages: the rotating magnetic steel and the fixed magnetic steel are fixed by being stacked on each other, the rotating magnetic steel is linked with the knob device, the main shaft, the self-locking cover and the self-locking piece of the knob device can make the rotating magnetic steel rotate clockwise by 180 degrees or counterclockwise by 180 degrees relative to the fixed magnetic steel, the magnetic flux of the rotating magnetic steel and the fixed magnetic steel can be superposed or offset, and thus the magnetic attraction force can be generated and disappeared, so that the object can be conveniently carried and unloaded during work; the self-locking cover is provided with a protruding pin downward protruding and matched with the clamping groove of the self-locking piece, when the N pole or the S pole of the rotating magnetic steel and the fixed magnetic steel is on the same side, the self-locking piece is pushed upward by the spring, and when the clamping groove is opposite to the protruding pin, the clamping groove is matched with the protruding pin, so that the suction cup has stable magnetic attraction force; the lower end of the fixed magnetic steel can directly contact the object, so that good adsorption effect can be ensured; and the sealing performance of the shell is good, and the internal permanent magnet assembly is effectively protected. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic view of the knob suction cup.

[0017] Figure 2 It is a first exploded view of the knob suction cup.

[0018] Figure 3 It is a second exploded view of the knob suction cup.

[0019] Figure 4 It is a sectional view of the knob suction cup.

[0020] Figure 5 It is a partial view of the knob suction cup. DETAILED DESCRIPTION

[0021] The utility model will be further described in detail in combination with the embodiment of the drawings.

[0022] As Figures 1 to 5As shown, a knob suction cup comprises a shell 1, a first through hole vertically penetrating in the shell 1, a magnetic steel 2 arranged in the first through hole, the magnetic steel 2 comprising a fixed magnetic steel 21 and a rotating magnetic steel 22 stacked with each other, the fixed magnetic steel 21 being fixed in the first through hole, the lower end of the fixed magnetic steel 21 being capable of directly contacting with an object; the rotating magnetic steel 22 being arranged above the fixed magnetic steel 21 and an iron sheet being arranged between the rotating magnetic steel 22 and the fixed magnetic steel 21; the rotating magnetic steel 22 being radially provided with two first mounting holes; the fixed magnetic steel 21 and the rotating magnetic steel 22 each comprising a plurality of permanent magnets; and the shell 1 being a magnetic conductor and being made of metal.

[0023] A knob device 3 is connected above the rotating magnetic steel 22, the knob device 3 comprising a handle 31, a main shaft 32, a self-locking cover 33 and a self-locking sheet 34 arranged from top to bottom, the handle 31 being vertically arranged between the main shaft 32 and being fixed by a screw, the self-locking cover 33 being fixed on the shell 1 by a screw, the self-locking cover 33 being provided with a second through hole penetrating in the center thereof, the main shaft 32 being fixedly connected with the self-locking sheet 34 by penetrating the second through hole, and the bottom of the main shaft 32 being inwardly recessed to be provided with a recess 321.

[0024] The inner side of the self-locking cover 33 is provided with a first sliding groove 331 and a second sliding groove 332 respectively opposite to the two first mounting holes, the first sliding groove 331 and the second sliding groove 332 each being arc-shaped and oppositely staggered, and the arc angle of the first sliding groove 331 and the second sliding groove 332 being 180 degrees; the self-locking sheet 34 is radially provided with two second mounting holes opposite to the first sliding groove 331 and the second sliding groove 332, the two first mounting holes and the second mounting holes being respectively provided with a transmission pin 6 matched with the first sliding groove 331 and the second sliding groove 332, so that the rotating magnetic steel 22 is linked with the main shaft 32 and the self-locking sheet 34, the two transmission pins 6 being respectively located at two opposite end points of the first sliding groove 331 and the second sliding groove 332, and the two transmission pins 6 being capable of rotating clockwise by 180 degrees or counterclockwise by 180 degrees on the first sliding groove 331 and the second sliding groove 332 respectively, so that the main shaft 32 can drive the rotating magnetic steel 22 to rotate clockwise by 180 degrees or counterclockwise by 180 degrees.

[0025] The self-locking sheet 34 is provided with a third through hole in the center thereof, and a spring 5 is arranged inside the third through hole and the recess 321, one end of the spring 5 abutting against the upper end of the rotating magnetic steel 22, and the other end of the spring 5 abutting against the top end of the recess 321.

[0026] The inner side of the self-locking cover 33 is further provided with a fixing groove 333, the self-locking sheet 34 is provided with a clamping groove 341 opposite to the fixing groove 333, and the fixing groove 333 is provided with a protruding pin 4 downwardly protruding and matched with the clamping groove 341, when the protruding pin 4 is matched with the clamping groove 341, the self-locking sheet 34 cannot be rotated, thus the rotating magnetic steel 22 is fixed, and since the spring 5 always pushes the handle 32 and the self-locking sheet 34 upwardly, the protruding pin 4 always stably matches with the clamping groove 341, at this time, the rotating magnetic steel 22 and the N pole or the S pole of the fixed magnetic steel 21 are located on the same side, the magnetic flux between the rotating magnetic steel 22 and the fixed magnetic steel 21 is superposed, the suction cup has magnetic attraction, since the protruding pin 4 stably matches with the clamping groove 341 at this time, the stable magnetic attraction can be kept when the suction cup works, and the safety during the working process is ensured; when the object on the suction cup needs to be released, the handle 31 can be pressed downwardly to make the clamping groove 341 leave the protruding pin 4, and then 180-degree rotation is carried out, so that the rotating magnetic steel 22 and the N pole or the S pole of the fixed magnetic steel 21 are located on different sides, at this time, the magnetic flux between the rotating magnetic steel 22 and the fixed magnetic steel 21 is cancelled, the suction cup does not have magnetic attraction, and the object on the suction cup can be easily unloaded; when the suction cup needs to have magnetic attraction again, the handle 31 only needs to be directly rotated by 180 degrees, so that the rotating magnetic steel 22 and the N pole or the S pole of the fixed magnetic steel 21 are located on the same side, at this time, under the action of the spring 5, the handle 32 and the self-locking sheet 34 are pushed upwardly, the clamping groove 341 matches with the protruding pin 4, and the suction cup has stable magnetic attraction.

[0027] The handle 31 can be further provided with anti-skid lines or anti-skid protrusions to increase the friction force when a user operates.

[0028] The utility model discloses a knob suction cup, which is characterized in that the fixed magnetic steel 21 and the rotating magnetic steel 22 are arranged to be superposed and fixed, the rotating magnetic steel 22 is connected with the knob device 3, the main shaft 32, the self-locking cover 33 and the self-locking sheet 34 of the knob device 3 can be used to rotate the rotating magnetic steel 22 by 180 degrees clockwise or counterclockwise relative to the fixed magnetic steel 21, the magnetic flux between the rotating magnetic steel 22 and the fixed magnetic steel 21 can be superposed or cancelled, and thus the generation and disappearance of the magnetic attraction can be realized, which facilitates the carrying and unloading of objects during work; the self-locking cover 33 is provided with the protruding pin 4 downwardly protruding and matched with the clamping groove 341 of the self-locking sheet 34, when the N pole or the S pole of the rotating magnetic steel 22 and the fixed magnetic steel 21 is on the same side, the self-locking sheet 34 is pushed upwardly by the spring 5, and the clamping groove 341 matches with the protruding pin 4 when the clamping groove 341 is opposite to the protruding pin 4, so that the suction cup has stable magnetic attraction; since the lower end of the fixed magnetic steel 21 can directly contact with an object, the good adsorption effect can be ensured; and the sealing performance of the shell 1 is good, and the internal permanent magnetic assembly is effectively protected.

[0029] Finally, it should be noted that: the above examples only illustrate the technical solutions of the present application, rather than limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the 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. A knob suction cup, comprising a shell (1), a first through hole vertically penetrating in the shell (1) is arranged, a magnetic steel (2) is arranged in the first through hole, characterized in that, The magnetic steel (2) comprises a fixed magnetic steel (21) and a rotating magnetic steel (22) stacked with each other, the fixed magnetic steel (21) is fixed in the first through hole; the rotating magnetic steel (22) is arranged above the fixed magnetic steel (21), the rotating magnetic steel (22) is provided with two first mounting holes in the radial direction; the rotating magnetic steel (22) is connected with a knob device (3) above, the knob device (3) comprises a handle (31), a main shaft (32), a self-locking cover (33) and a self-locking piece (34) arranged from top to bottom, the self-locking cover (33) is matched on the shell (1), the center of the self-locking cover (33) is provided with a second through hole penetrating through, the main shaft (32) is fixedly connected with the self-locking piece (34) through the second through hole, the inner side of the self-locking cover (33) is provided with a first sliding groove (331) and a second sliding groove (332) respectively opposite to the two first mounting holes, the first sliding groove (331) and the second sliding groove (332) are both arc-shaped and oppositely staggered; the self-locking piece (34) is provided with two second mounting holes opposite to the first sliding groove (331) and the second sliding groove (332) in the radial direction, the two first mounting holes and the second mounting holes are provided with a transmission pin (6) matched with the first sliding groove (331) and the second sliding groove (332) respectively, and the two transmission pins (6) are respectively located at two end points opposite to the first sliding groove (331) and the second sliding groove (332).

2. The knob suction cup of claim 1, wherein, The center of the self-locking piece (34) is provided with a third through hole, a spring (5) is arranged in the third through hole, one end of the spring (5) abuts against the upper end of the rotating magnetic steel (22), and the other end of the spring (5) abuts against the main shaft (32); the inner side of the self-locking cover (33) is further provided with a fixed groove (333), the self-locking piece (34) is provided with a clamping groove (341) opposite to the fixed groove (333), and the fixed groove (333) is provided with a protruding pin (4) downward protruding and matched with the clamping groove (341).

3. The knob suction cup of claim 1, wherein, An iron sheet is arranged between the rotating magnetic steel (22) and the fixed magnetic steel (21), and the fixed magnetic steel (21) and the rotating magnetic steel (22) can respectively comprise a plurality of permanent magnets.

4. The knob suction cup of claim 1, wherein, The shell (1) is a magnetic conductor and is made of metal.

5. The knob suction cup of claim 1, wherein, The handle (31) and the main shaft (32) are vertically arranged and fixed by a screw.

6. The knob suction cup of claim 1, wherein, The self-locking cover (33) is fixed on the shell (1) by a screw.

7. The knob suction cup of claim 2, wherein, The bottom of the main shaft (32) is recessed inwardly and provided with a recess (321).

8. The knob suction cup of claim 1, wherein, The arc angle of the first sliding groove (331) and the second sliding groove (332) is 180 degrees.

9. The knob suction cup of claim 7, wherein, The upper end of the spring (5) abuts against the recess (321).

10. The knob suction cup of claim 1, wherein, The handle (31) can be further provided with anti-skid lines or anti-skid protrusions.

Images