CN214925034U

CN214925034U - Reciprocating motion device

Info

Publication number: CN214925034U
Application number: CN202121157905.1U
Authority: CN
Inventors: 杨斌堂
Original assignee: Nanjing Lingji Yidong Driving Technology Co ltd
Current assignee: Nanjing Lingji Yidong Driving Technology Co ltd
Priority date: 2021-05-27
Filing date: 2021-05-27
Publication date: 2021-11-30
Anticipated expiration: 2031-05-27

Abstract

The utility model provides a reciprocating motion device, which comprises a shell, a driving component and a functional component, wherein the shell is provided with an electromagnet, when the electromagnet is electrified, the driving component can be driven to move so as to enable the functional component to move from a first position to a second position, and when the electromagnet is powered off, the driving component can move under the driving of the driving component so as to enable the functional component to move from the second position to the first position; or function block can be from the second position motion to the primary importance under ordering about of self, and the primary importance is initial position, and the second place is the target position, the utility model discloses in produce magnetic field and utilize magnetic force to realize the reciprocal impact action of reciprocating motion device function head through the electromagnet, the accuracy is high, and is fast, and compares with current reciprocating motion device, has the advantage that the structure is simpler, labour saving and time saving, accuracy are high, does benefit to popularization and application.

Description

Reciprocating motion device

Technical Field

The utility model relates to a mechanical structure technical field specifically, relates to a reciprocating motion device.

Background

In mechanical movement, reciprocating movement is a common movement, and operations capable of achieving multiple functions, such as punching, cutting, grinding, workpiece transferring and the like, involve reciprocating movement, and even medical equipment.

Punching is a common process, and the precision requirement to the degree of depth of punching and the position of punching on some accurate instruments or equipment is very high, but current drilling equipment has the defect that inefficiency, degree of accuracy are not high, and the manual work is punched simultaneously and is wasted time and energy, consequently needs to find out a device that punches efficiently, degree of accuracy height, labour saving and time saving urgently.

Patent document CN 208584621U discloses a hand-operated puncher, which comprises a supporting frame, a vertical shaft assembly and a driving mechanism; the vertical shaft assembly is arranged on the supporting frame and penetrates through the supporting frame to complete axial movement, and the driving mechanism is arranged on the supporting frame and is in contact with the vertical shaft assembly to drive corresponding components of the vertical shaft assembly; the rotary motion of the driving mechanism is converted into the vertical shaft assembly to reciprocate up and down by operating the driving mechanism; the vertical shaft assembly generates reciprocating impact force to cooperate with corresponding components of the support portion to perforate the article, but the design is time consuming, labor intensive and not highly accurate.

SUMMERY OF THE UTILITY MODEL

To the defects in the prior art, the utility model aims at providing a reciprocating motion device.

According to the utility model provides a reciprocating motion device, which comprises a shell, a driving component and a functional component;

the shell is provided with an electromagnet, and when the electromagnet is electrified, the driving assembly can be driven to move, so that the functional assembly can be moved from a first position to a second position;

when the electromagnet is powered off, the driving component can move under the driving of the driving component so as to move the functional component from the second position to the first position; or

The functional component can move from the second position to the first position under the driving of the functional component;

the first position is an initial position, and the second position is a target position.

Preferably, the driving assembly comprises a permanent magnet structure body, and the functional assembly is provided with a moving body;

one end of the permanent magnet structure body is mounted on the shell through a first fixed shaft and can rotate around the first fixed shaft, and the other end of the permanent magnet structure body is movably matched with the moving body;

the number of the permanent magnet structural bodies is one or more, and the plurality of permanent magnet structural bodies are symmetrically or asymmetrically arranged.

Preferably, the functional module includes a functional head, and the movable body adopts any one of the following structures:

-the moving body is a permanent magnet;

-the moving body is a body of magnetically conductive material;

the moving body is a composite body made of a magnetic conductive material and a non-magnetic conductive material;

the moving body is made of a non-magnetic material, a first accommodating space is arranged between the moving body and the housing, a guide sleeve extends out of the moving body, the functional assembly further comprises a first spring, the first spring is sleeved on the guide sleeve and arranged in the first accommodating space, one end of the functional head is detachably arranged in the guide sleeve, the other end of the functional head penetrates through the first accommodating space and can extend to the outside of the housing, and in the first position and the second position, the first spring is in a compressed state, and the elastic force of the first spring is larger in the second position than in the first position.

Preferably, the inside of the shell is provided with a limiting frame, a second spring and an adjusting end;

the second spring is arranged between the limiting frame and the adjusting end and is in a compressed state;

the limiting frame can limit the movement of the permanent magnet structure body on the driving assembly, and the adjusting end can adjust the pre-tightening force of the second spring.

Preferably, a clamping piece is arranged inside the guide sleeve, and the functional head is inserted into the guide sleeve through the clamping piece;

the shell is provided with a thrust plate, and the functional head is provided with a limiting table;

when the functional head moves from the second position to the first position, the functional head moves to the third position and then moves to the first position, and the first position is located between the second position and the third position;

when the functional head moves from the first position to the third position, the thrust plate blocks the limit table and the functional head is loosened from the moving body.

Preferably, a battery is mounted on the housing or connected with an external power supply, and the electromagnet is electrically connected with the external power supply or the battery;

the electromagnet adopts an electromagnetic coil.

Preferably, the device further comprises a connecting rod, one end of the connecting rod is movably matched with the limiting frame, and the other end of the connecting rod is fixedly connected with the end part of the permanent magnet structure body;

the limiting frame is a magnet, and the magnetism of one end of the limiting frame opposite to the permanent magnet structure body is opposite; or the limiting frame is a non-magnetic body.

Preferably, the device further comprises a connecting column, a movable rod, a third spring, a fourth spring, a supporting frame body and a connecting plate;

the spliced pole, braced frame all install in the inside of casing and the one end of spliced pole install on the moving body, and the other end of spliced pole passes braced frame and is connected with the one end of connecting plate, movable rod in proper order, and the other end of movable rod is the outside that the free end just extended to the casing, and wherein, the third spring setting is between braced frame and connecting plate, and the fourth spring setting is between the other end of casing and movable rod.

Preferably, a locking assembly is arranged in the supporting frame body, and the locking assembly comprises a locking shell, a rolling body, an elastic body, a retainer and an operating assembly;

the connecting column penetrates through the locking shell, a wedge-shaped space is formed between the connecting column and the locking shell, and the rolling body is installed in the wedge-shaped space and embedded into the retainer;

the end with the small space in the wedge-shaped space faces the moving body, the elastic body is installed at the end with the large space in the wedge-shaped space, and the two ends of the elastic body are respectively connected with the locking shell and the retainer.

Preferably, the operating assembly comprises a lever body, a second fixed shaft and a switch member;

the lever body passes through the rotatable dress of second fixed axle is on the casing, the one end at the lever body is installed to the switch spare, can order about the one end of the lever body when pressing the switch spare and rotate around the second fixed axle and then make the other end drive rolling element of the lever body makes towards the motion of movable rod the spliced pole unblock.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model discloses in produce magnetic field and utilize magnetic force to realize the reciprocal impact action of reciprocating motion device function head through the electromagnet, the accuracy is high, and is fast, and compares with current reciprocating motion device, has the advantage that the structure is simpler, labour saving and time saving, accuracy are high, do benefit to popularization and application.

2. The utility model discloses in set up chucking spare and can make the function head fix on the moving body, avoid in the motion process pine to take off and influence normal operation, be provided with thrust plate and spacing structure again on the casing simultaneously, can rely on inertia to make the function head shake off the chucking spare to the constraint of function head after the operation finishes, made things convenient for the operation of changing the function head, structural design is ingenious, and labour saving and time saving.

3. The utility model provides a permanent magnetism structure body preferred adopts the magnet of arranging in pairs, can rely on the magnetism repulsion of self to part rapidly after the electromagnet outage, and can attract or make the functional head return rapidly through the spring on the functional unit through magnetic force, the simple operation, convenient to use.

4. The utility model provides a uide bushing can fix a position and lead the functional head, has improved the efficiency of dismouting and the accuracy nature of action.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic structural section of the present invention;

FIG. 2 is a schematic structural view of the present invention with a connecting rod;

fig. 3 is a schematic structural view of the present invention when the locking assembly is installed therein.

The figures show that:

casing 1 connecting column 16

Electromagnet 2 active lever 17

Third spring 18 of permanent magnet structure 3

Fourth spring 19 of moving body 4

The first accommodation space 5 supports the frame body 20

Connecting plate 21 of functional head 6

First spring 7 locking housing 22

Rolling body 23 of limit frame 8

Elastic body 24 of second spring 9

Adjusting end 10 holder 25

Thrust plate 11 lever body 26

Second fixed shaft 27 of limit table 12

Retainer 13 indexing 28

Connecting rod 14 battery 29

First fixed axle 15 guide sleeve 30

Detailed Description

The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.

The utility model provides a reciprocating motion device, as shown in figure 1, which comprises a housin 1, drive assembly and functional module, be provided with electromagnet 2 on the casing 1, electromagnet 2 preferably adopts solenoid, the last permanent magnet structure 3 that is provided with of drive assembly, permanent magnet structure 3 preferably adopts the permanent magnet, can produce magnetic field and magnetic field magnetic force when electromagnet 2 switches on and can order about the drive assembly motion and then can produce thrust and make functional module move to the second position from the first position, wherein, the first position is initial position, the second position is the target location, functional module includes functional head 6, the target location is the position that the free end of functional head 6 needs to arrive, the initial position is the position at functional module place before electromagnet 2 switches on.

Further, when the electromagnet 2 is powered off, the driving component can move under the driving of the driving component, so that the functional component moves from the second position to the first position or moves from the second position to the first position under the driving of the functional component, so that the driving component is driven to move, a moving body 4 is arranged on the functional component, one end of the permanent magnet structural body 3 is installed on the shell 1 through the first fixing shaft 15, the permanent magnet structural body 3 can rotate around the first fixing shaft 15, and the other end of the permanent magnet structural body 3 is movably matched with the moving body 4.

Specifically, the moving body 4 is any one of a non-magnetic conductive material, a permanent magnet, a magnetic conductive material body, a composite body made of a magnetic conductive material and a non-magnetic conductive material, when a product is designed, the number of the permanent magnet structural bodies 3 may be one, or a plurality of permanent magnet structural bodies 3 may be arranged in a central symmetry manner or in an asymmetric manner, and in practical application, the moving body may be specifically designed into different structures, specifically as follows:

in a specific embodiment, the moving body 4 is made of a non-magnetic material, a first accommodating space 5 is provided between the moving body 4 and the housing 1, the functional assembly further includes a first spring 7, a guide sleeve 30 extends from the moving body 4, the first spring 7 is sleeved on the guide sleeve 30 and is disposed in the first accommodating space 5, one end of the functional head 6 is detachably mounted inside the guide sleeve 30, the other end of the functional head 6 penetrates through the first accommodating space 5 and can extend to the outside of the housing 1, when the functional assembly is in the first position and the second position, the first spring 7 is in a compressed state, and when the functional assembly is in the second position, the elastic force of the first spring 7 is greater than that when the functional assembly is in the first position, and when the functional assembly moves from the second position to the first position by virtue of the elastic force of the first spring 7, the functional assembly further drives the permanent magnet structure 3 to move.

Further, functional head 6 can utilize the inside assorted space of uide bushing 30 convenient when the installation to target in place functional head 6 installation, therefore uide bushing 30 plays the effect of installation direction, has improved the installation effectiveness, and the setting of uide bushing 30 is also not random simultaneously, and the inside installation space of uide bushing 30 matches with functional head 6's structure for functional head 6 after the installation moves towards the accuracy, provides the assurance for the accurate operation of device. In practical application, the guide sleeve 30 and the moving body 4 can be separated or integrated, and the design is flexible according to the practical application scene of the product, so as to meet the requirement of the product.

In another specific embodiment, the first spring 7 may be omitted, the moving body 4 is any one of a permanent magnet, a magnetic conductive material and a non-magnetic conductive material, the number of the permanent magnet structures 3 is multiple and is symmetrically arranged, for example, two, when the electromagnet 2 is powered off, the ends of the multiple permanent magnet structures 3 can be separated by mutual repulsion, and at the same time, the permanent magnet structures 3 magnetically attract the moving body 4 to drive the moving body 4 to move when the permanent magnet structures 3 move, and further drive the function head 6 to move towards the first position, so as to realize the function movement of the function head 6.

In a further specific embodiment, the number of the permanent magnet structures 3 is one, and the functional component is moved from the second position to the first position by means of the elastic force of the first spring 7 to drive the permanent magnet structures 3 to move.

Specifically, in practical application, the permanent magnet structure 3 should be flexibly selected according to practical application scenarios, and is preferably an ellipsoid structure, and is configured to be an eccentric structure as shown in fig. 1. In addition, in order to prolong the service life of the equipment and reduce the friction force, a rolling bearing is preferably arranged at one end of the permanent magnet structure body 3 facing the moving body 4, so that the permanent magnet structure body 3 and the moving body 4 slide to roll, the friction force between the permanent magnet structure body 3 and the moving body 4 is reduced during relative movement, and the flexibility of the movement is improved.

The utility model discloses in for preventing that function head 6 from droing from casing 1 when using and influencing reciprocating motion device's normal use, the inside of uide bushing 30 is provided with chucking spare 13, and function head 6 is pegged graft through chucking spare 13 and is realized the fixed of function head 6 on uide bushing 30.

The utility model provides a reciprocating motion device can use a plurality of fields, realizes multiple functions, can be drilling equipment, realizes specific drilling function, and function head 6 can be the drill bit, also can be for cutting device, and function head 6 is the cutter, still can be for the transfer device, and function head 6 can be supporting platform, utilizes supporting platform to transport machined part to the target position, can also use on the medical instrument.

In a preferred embodiment, the housing 1 is provided with a thrust plate 11, the functional head 6 is provided with a limiting table 12, when the functional head 6 moves from the second position to the first position, the speed is fast in a clockwise manner, the functional assembly drives the functional head 6 to move to the first position after moving to the third position first due to inertia, the first position is located between the second position and the third position, in the process of moving the functional head 6, when the functional head 6 moves from the first position to the third position, the thrust plate 11 blocks the limiting table 12, and then the functional head 6 gets rid of the constraint of the clamping piece 13 from the moving body 4 and releases the constraint, that is, the blocking of the thrust plate 11 drives the functional head 6 to get rid of the clamping piece 13, at this time, the functional head 6 can be easily taken down, and the functional head 6 which is convenient to be replaced with a new one is prepared for the next operation.

Specifically, the inside of the housing 1 is provided with a limiting frame 8, a second spring 9 and an adjusting end 10, the second spring 9 is arranged between the limiting frame 8 and the adjusting end 10, the limiting frame 8 can limit the movement of the permanent magnet structural body 3 on the driving assembly, the distance of the end part of the permanent magnet structural body 3 deviating from the axis of the housing 1 is within a certain range, for example, 0.5 cm, the adjusting end 10 is preferably provided with an external thread, the housing 1 is provided with an internal thread hole, the adjusting end 10 can be installed in the internal thread hole of the housing 1 in a matched manner, the screwing adjusting end 10 can extrude or stretch the second spring 9 to adjust the pre-tightening force of the second spring 9, the pre-tightening force of the second spring 9 can influence the distance between the third position and the first position, and automatic release and quick replacement of the functional head 6 are achieved.

The utility model provides a reciprocating motion device both can be with the product design for realizing the power supply through connecing external power source, also can install battery 29 on casing 1 according to the application scene of reality, and battery 29 both can be rechargeable battery, also can design for the dry battery according to actual conditions, realizes the demand of portability.

In a preferred embodiment, the magnetic suspension type permanent magnet motor further comprises a connecting rod 14, one end of the connecting rod 14 is movably matched with the limiting frame 8, as shown in fig. 2, the other end of the connecting rod 14 is fixedly connected with the end of the permanent magnet structure 3, when the ends of the two permanent magnet structures 3 are closed, one ends of the two connecting rods 14 can be closed and slide on the limiting frame 8, the connecting rod 14 is used for connecting the limiting frame 8 with the permanent magnet structure 3 to increase the connecting force arm, when the power is cut off, the end of the permanent magnet structure 3 can move away from the axis of the shell 1 by means of the elastic force of the second spring 9, wherein the limiting frame 8 is a magnet, and the opposite end of the limiting frame 8 and the permanent magnet structure 3 has opposite magnetism; or the limit frame 8 is a non-magnetic body, for example, the limit frame 8 is made of a non-magnetic material.

The utility model discloses in still include spliced pole 16, movable rod 17, third spring 18, fourth spring 19, carriage body 20 and connecting plate 21, spliced pole 16, carriage body 20 are all installed in the inside of casing 1 and the one end of spliced pole 16 is installed on the moving body 4, the other end of spliced pole 16 passes carriage body 20 and is connected with connecting plate 21, the one end of movable rod 17 in proper order, the other end of movable rod 17 is the free end and extends to the outside of casing 1, in a preferred example, the center of regulation end 10 is provided with the through-hole, movable rod 17 passes the through-hole, third spring 18 sets up between carriage body 20 and connecting plate 21, fourth spring 19 sets up between the other end of casing 1 and movable rod 17, when electromagnet 2 circular telegram, moving body 4 drives spliced pole 16, movable rod 17 synchronous motion, third spring 18, fourth spring 19 is compressed, when the electromagnet 2 is powered off, the return elastic forces of the third spring 18 and the fourth spring 19 can drive the connecting column 16 and the movable rod 17 to move respectively. Wherein, be provided with along a plurality of along axial direction interval mark position 28 in proper order on the movable rod 17, can see the length that functional head 6 stretches out through mark position 28 to realize more accurate operation.

In a preferred embodiment, a locking assembly is disposed in the supporting frame 20, the locking assembly includes a locking housing 22, a rolling body 23, an elastic body 24, a cage 25 and an operating assembly, the connecting column 16 passes through the locking housing 22, a wedge-shaped space is formed between the connecting column 16 and the locking housing 22, the rolling body 23 is mounted in the wedge-shaped space and is embedded in the cage 25, wherein one end of the wedge-shaped space with a small space faces the moving body 4, the elastic body 24 is mounted at one end of the wedge-shaped space with a large space, and two ends of the elastic body 24 are respectively connected with the locking housing 22 and the cage 25, so that the rolling body 23 can lock the trend of the connecting column 16 moving towards the moving body 4, and when the operating assembly is operated, the rolling body 23 can unlock the connecting column 16, and the switching from the initial position to the target position is realized.

Further, the operating assembly includes a lever body 26, a second fixed shaft 27, and a switch member, the lever body 26 is rotatably mounted on the housing 1 through the second fixing shaft 27, the switch member is mounted at one end of the lever body 26, when the switch member is pressed, one end of the lever body 26 can be driven to rotate around the second fixed shaft 27, so that the other end of the lever body 26 drives the rolling body 23 to move towards the movable rod 17, so as to unlock the connecting column 16, the switch member comprises an operating handle and a fifth spring, the operating handle is arranged on the shell 1, the fifth spring is arranged between the operating handle and the shell 1, when the operating handle is pressed, the movement of the rolling bodies 23 towards the mobile lever 17 and therefore the unlocking of said connecting column 16 is obtained, which, when the lever is released, the operating lever is reset by the action of the fifth spring force and pulls the lever body 26 to reset, at which point the rolling body 23 again locks the movement of the connecting column 16 towards the mobile body 4.

Use the quantity of permanent magnet structure 3 to be two, moving body 4 adopts non-magnetic material as the example, the utility model discloses a theory of operation as follows:

as shown in fig. 1, the two permanent magnet structural bodies 3 are arranged together through a rotatable arrangement structure of a first fixed shaft 15, the two permanent magnet structural bodies 3 are symmetrically arranged, and the polarities on the same side are the same, when the electromagnet 2 is energized, a magnetic field is generated to drive the two ends of the two permanent magnet structural bodies 3 to respectively approach to the axis of the housing 1, so that the permanent magnet structural bodies 3 can drive the moving body 4 to move towards one end of the moving body 4 and move away from the first fixed shaft 15, and the movement of the functional head 6 is realized from an initial position to a target position.

Further, after the functional head 6 moves to the target position, the electromagnet 2 is powered off, at this time, because the magnetic field generated by the electromagnet 2 being powered on disappears, the repulsive force of the two permanent magnet structural bodies 3 drives the two ends of the two permanent magnet structural bodies 3 to move away from the axis of the housing 1, and because the first spring 7 is in the compressed state, the moving body 4 is driven to move towards the direction of the first fixed shaft 15 until the moving body abuts against the permanent magnet structural bodies 3 under the action of the rebounding force of the first spring 7, so that the functional head 6 returns to the initial position.

In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

Claims

1. A reciprocating device is characterized by comprising a shell (1), a driving component and a functional component;

the shell (1) is provided with an electromagnet (2), and when the electromagnet (2) is electrified, the driving component can be driven to move, so that the functional component can be moved from a first position to a second position;

when the electromagnet (2) is powered off, the driving component can move under the driving of the driving component so as to move the functional component from the second position to the first position; or

2. The reciprocating device according to claim 1, wherein the drive assembly comprises a permanent magnet structure (3), and a moving body (4) is provided on the functional assembly;

one end of the permanent magnet structure body (3) is mounted on the shell (1) through a first fixed shaft (15), the permanent magnet structure body (3) can rotate around the first fixed shaft (15), and the other end of the permanent magnet structure body (3) is movably matched with the moving body (4);

the number of the permanent magnet structural bodies (3) is one or more, and the plurality of permanent magnet structural bodies (3) are symmetrically or asymmetrically arranged.

3. The reciprocating device according to claim 2, wherein the functional assembly comprises a functional head (6), and the moving body (4) adopts any one of the following structures:

-the moving body (4) is a permanent magnet;

-the moving body (4) is a body of magnetically conductive material;

-the moving body (4) is a composite made of a magnetically conductive material and a non-magnetically conductive material;

-the moving body (4) is made of a non-magnetic material, a first accommodating space (5) is arranged between the moving body (4) and the housing (1), a guide sleeve (30) extends out of the moving body (4), the functional assembly further comprises a first spring (7), the first spring (7) is sleeved on the guide sleeve (30) and arranged in the first accommodating space (5), one end of the functional head (6) is detachably arranged in the guide sleeve (30), the other end of the functional head (6) penetrates through the first accommodating space (5) and can extend to the outside of the housing (1), and in the first position and the second position, the first spring (7) is in a compressed state, and in the second position, the elastic force of the first spring (7) is larger than that in the first position.

4. The reciprocating device according to claim 1, wherein the inside of the housing (1) is provided with a limit frame (8), a second spring (9) and an adjusting end (10);

the second spring (9) is arranged between the limiting frame (8) and the adjusting end (10) and is in a compressed state;

the limiting frame (8) can limit the movement of the permanent magnet structure body (3) on the driving assembly, and the adjusting end (10) can adjust the pretightening force of the second spring (9).

5. The reciprocating device according to claim 3, wherein a clamping piece (13) is arranged inside the guide sleeve (30), and the functional head (6) is inserted on the guide sleeve (30) through the clamping piece (13);

a thrust plate (11) is arranged on the shell (1), and a limiting table (12) is arranged on the functional head (6);

when the functional head (6) moves from the second position to the first position, the functional head moves to the third position and then moves to the first position, and the first position is located between the second position and the third position;

when the functional head (6) moves from the first position to the third position, the thrust plate (11) blocks the limit table (12) and the functional head (6) is loosened from the moving body (4).

6. The reciprocating apparatus according to claim 1, wherein a battery is mounted on the housing (1) or an external power source, and the electromagnet (2) is electrically connected with the external power source or the battery;

the electromagnet (2) adopts an electromagnetic coil.

7. The reciprocating device according to claim 4, characterized by further comprising a connecting rod (14), wherein one end of the connecting rod (14) is movably matched with the limiting frame (8), and the other end of the connecting rod (14) is fixedly connected with the end part of the permanent magnet structure body (3);

the limiting frame (8) is a magnet, and the magnetism of one end, opposite to the permanent magnet structure body (3), of the limiting frame (8) is opposite; or the limiting frame (8) is a non-magnet.

8. The reciprocating apparatus according to claim 2, further comprising a connecting column (16), a movable rod (17), a third spring (18), a fourth spring (19), a support frame (20), and a connecting plate (21);

spliced pole (16), braced frame body (20) are all installed on the moving body (4) in the inside of casing (1) and the one end of spliced pole (16), the other end of spliced pole (16) passes braced frame body (20) and in proper order with connecting plate (21), the one end of movable rod (17) is connected, the other end of movable rod (17) is the outside that the free end just extended to casing (1), wherein, third spring (18) set up between braced frame body (20) and connecting plate (21), fourth spring (19) set up between the other end of casing (1) and movable rod (17).

9. The reciprocation device according to claim 8, wherein the support frame (20) is provided therein with a locking assembly including a locking housing (22), a rolling body (23), an elastic body (24), a cage (25), and an operating assembly;

the connecting column (16) penetrates through the locking shell (22) and a wedge-shaped space is formed between the connecting column (16) and the locking shell (22), and the rolling bodies (23) are installed in the wedge-shaped space and embedded into the retainer (25);

the end with the small space in the wedge-shaped space faces the moving body (4), the elastic body (24) is installed at the end with the large space in the wedge-shaped space, and the two ends of the elastic body (24) are respectively connected with the locking shell (22) and the retainer (25).

10. The reciprocator according to claim 9, characterized in that the operating assembly includes a lever body (26), a second fixed shaft (27), and a switch member;

the lever body (26) is rotatably arranged on the shell (1) through the second fixing shaft (27), the switch piece is arranged at one end of the lever body (26), and when the switch piece is pressed, one end of the lever body (26) can be driven to rotate around the second fixing shaft (27) so that the other end of the lever body (26) drives the rolling body (23) to move towards the movable rod (17) and the connecting column (16) is unlocked.