CN208112485U - Rod-type linear motor - Google Patents

Abstract

The utility model provides a kind of rod-type linear motor, includes shell, driving clamping institution and movement parts；The driving clamping institution includes driving mechanism and clamping institution, and driving mechanism is magnet material, and driving mechanism nesting is installed in the housing；Clamping institution is connected with driving mechanism, and clamping institution can be converted between release conditions and locked state both states：Under the release conditions, movement parts can be moved upwards with respect to clamping institution along the whole side of axial both direction；Under the locked state, movement parts are locked with respect to clamping piece position or movement parts are only capable of opposite clamping institution and move upwards in one of side in axial both direction.The utility model structure is simple, and building block is few, and while realizing that control clamping institution discharge or is sealed by external magnetic field, the actuation time of movement parts can be controlled effectively with direction of action, be applicable in different driving occasions.

Description

Rod-type linear motor

Technical field

The utility model relates to electromagnetic machine technical fields, and in particular, to a kind of rod-type linear motor.

Background technique

In recent years, electricity, magnetostriction actuation techniques quickly grow, produce as giant magnetostriction material, electroceramics with And the intellectual materials such as magnetostriction marmem.These intellectual materials have energy density big, and output power is high, retractable Become the advantages that accurate, therefore high-grade drives device and linear motor can be researched and developed based on these intellectual materials.But based on intelligence The linear motor of material development, especially for inchworm motion class linear motor, due to the clamping institution of not no Performance Match, and The big output stress performance of the intellectual material made can not be not fully exerted, and cause this kind of motor to cannot be used for super large load and drive Dynamic, transmission field.

Utility model content

For the defects in the prior art, the purpose of the utility model is to provide a kind of rod-type linear motors.

According to rod-type linear motor provided by the utility model, include shell, driving clamping institution and movement parts；It is described Driving clamping institution includes driving mechanism and clamping institution, and driving mechanism is magnet material, and driving mechanism nesting is mounted on shell In；

Clamping institution is connected with driving mechanism, and clamping institution can be between release conditions and locked state both states Conversion：

Under the release conditions, movement parts can be transported with respect to clamping institution on whole directions along axial both direction It is dynamic；

Under the locked state, movement parts are locked with respect to clamping piece position or movement parts are only capable of opposite clamping institution It is moved upwards in one of side in axial both direction.

Preferably, the clamping institution includes clamping piece and support ring, and the one end of clamping piece along its length is mounted on branch On pushing out ring, the other end then can be contacted or be separated with movement parts；

It is arranged comprising multiple clamping pieces along support ring circumferential direction, the support ring is that rigid member and being fastenedly connected is driving In mechanism；

Shown clamping piece includes switch permanent magnet and frame board.

Preferably, multiple driving clamping institutions are provided in shell；

In the same driving clamping institution, the rounded arrays arrangement of multiple clamping pieces, along support ring axial direction, Multiple clamping pieces are located at the same side, along support ring, in the radial direction, the arranged direction of the pole N-S of multiple clamping pieces is consistent；

In the clamping piece position along support ring axial direction, two opposite driving clamping institutions constitute a driving clamp Group.

Preferably, setting is there are two clamp group is driven in shell, and correspondence is equipped with a movement in each driving clamp group Part；Alternatively,

It is provided with a driving clamp group in shell, drives corresponding on two driving clamping institutions in clamp group be equipped with One movement parts；

A connection piece is provided between two movement parts, the connector includes rigid frame and push-and-pull elastic component, rigidity A rotor magnet is provided in the space that frame and push-and-pull elastic component surround jointly.

Preferably, be provided on the wall surface of the hole of the central through hole of the support ring cross section be trapezoidal trapezoidal annular groove, one A or multiple clamping pieces are mounted in trapezoidal annular groove；

Clamping piece includes the first magnetic ball, the second magnetic ball and to limit to elastic component, the first magnetic ball, the second magnetic ball respectively with limit to Elastic component is connected along axial both ends；Alternatively,

Clamping piece includes the first card ball, the second card ball and limits to permanent magnet；First card ball is limited to permanent magnet, the second card Ball is sequentially arranged；Alternatively,

Clamping piece includes pull electromagnet, pull permanent magnet and engagement post, and pull permanent magnet is fastenedly connected with engagement post, Pinion rack is provided in movement parts, engagement post matches with pinion rack.

Preferably, described limit is fastenedly connected by a transiting rod being arranged in support ring to the axial middle part of elastic component On；

Positioned opposite along shell axial direction comprising two driving clamping institutions, on the same driving clamping institution first Magnetic ball is identical as the pole orientation of the second magnetic ball；The magnetic pole of the first magnetic ball and the second magnetic ball on different two drivings clamping institutions It is contrary.

Preferably, along movement parts axial direction, support ring forms the first ring segment of sequentially connected S-shaped arrangement, second Ring segment, third ring segment；

The trapezoidal annular groove and clamping piece are provided in first ring segment and third ring segment；The annular that second ring segment passes through setting Fixture block is axially relatively fixed with shell.

It preferably, also include sleeve, the sleeve is securedly mounted to interior of shell, and the movement parts are slidably mounted on sleeve Central through hole in；

It is positioned opposite along shell axial direction comprising two driving clamping institutions, the driving mechanism of two driving clamping institutions It is magnet；

Sleeve in axial direction drawn on the end face at both ends respectively after push-and-pull elastic component respectively with two driving mechanisms It is connected.

Preferably, control electromagnet is provided on shell；

The movement parts are magnet；Alternatively,

Insertion is equipped with one or more first permanent magnets in the movement parts；On movement parts cross section, it is provided with multiple It is radially slotted, the first permanent magnet be mounted on movement parts it is two neighboring it is radially slotted between entity part in.

Preferably, lock-bit electromagnet is provided on the support ring and/or sleeve.

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

1, the utility model structure is simple, and building block is few, realizes that control clamping institution is discharged by external magnetic field Or while sealed, the actuation time of movement parts can be controlled effectively with direction of action, be applicable in different driving occasions.

2, being further improved in the utility model structure basis can be controlled by electromagnetic signal, so that clamping institution and fortune The control of moving part is sensitive, conveniently, and complicated the Solid slice structure for needing directly to contact and drive mechanism is omitted.

3, the utility model passes through the setting of driving clamping institution and sleeve, so that movement parts have good guiding performance Can, and direction of action is stablized, and then can be applied to super large load driving, transmission field.

4, low energy consumption during utility model works, can effectively save use cost.

Detailed description of the invention

Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other spies of the utility model Sign, objects and advantages will become more apparent upon：

Fig. 1 is clamping institution front view；

Fig. 2 is clamping institution left view；

Fig. 3 is that two clamping institutions are oppositely arranged left view；

Fig. 4 is the clamping piece structural schematic diagram in embodiment 1；

Fig. 5 is the clamping piece structural schematic diagram in embodiment 5；

Fig. 6 is driving clamping institution front view；

Fig. 7 is the locked state left view for driving a unit in clamp group；

Fig. 8 is the release conditions left view for driving a unit in clamp group；

Fig. 9 is the locked state left view for driving another unit in clamp group；

Figure 10 is the release conditions left view for driving another unit in clamp group；

Figure 11 is structural schematic diagram behind the external magnetic field for applying a direction in embodiment 6；

Figure 12 is structural schematic diagram behind the external magnetic field for applying another direction in embodiment 6；

Figure 13 is structural schematic diagram behind the external magnetic field for applying a direction in embodiment 2；

Figure 14 is structural schematic diagram behind the external magnetic field for applying another direction in embodiment 2；

Figure 15 is structural schematic diagram when movement parts move in both directions in embodiment 3；

Figure 16 is structural schematic diagram when movement parts cannot move in embodiment 3；

Figure 17 is structural schematic diagram when movement parts move in one direction in embodiment 7；

Figure 18 is structural schematic diagram when movement parts are moved along another direction in embodiment 7；

Figure 19 is structural schematic diagram when movement parts move in one direction in embodiment 8；

Figure 20 is structural schematic diagram when movement parts are moved along another direction in embodiment 8；

Figure 21 is the utility model structure diagram in embodiment 4；

Figure 22 is structural schematic diagram when movement parts move in one direction in embodiment 9；

Figure 23 is structural schematic diagram when movement parts are moved along another direction in embodiment 9；

Figure 24 is structural schematic diagram when movement parts move in one direction in embodiment 12；

Figure 25 is structural schematic diagram when movement parts are moved along another direction in embodiment 12；

Figure 26 be limited in embodiment 11 to permanent magnet be spherical structure when structural schematic diagram；

Figure 27 be limited in embodiment 11 to permanent magnet be ellipsoid structure when structural schematic diagram；

Figure 28 is the utility model structure diagram in embodiment 13；

Figure 29 is movement parts structural schematic diagram in embodiment 15；

Figure 30 is that the structural schematic diagram after transiting rod is arranged in embodiment 9；

Figure 31 is the structural schematic diagram for being provided with electromagnet in embodiment 16 in support ring；

Figure 32 is the structural schematic diagram for being provided with electromagnet in embodiment 16 on support ring and sleeve simultaneously；Figure 33 is this reality With the different installation sites and different installation schematic diagram of electromagnet structure.It is shown in figure：

Specific embodiment

The utility model is described in detail combined with specific embodiments below.Following embodiment will be helpful to this field Technical staff further understands the utility model, but does not limit the utility model in any form.It should be pointed out that ability For the those of ordinary skill in domain, without departing from the concept of the premise utility, various modifications and improvements can be made. These are all within the protection scope of the present invention.

In the description of the present invention, it should be understood that term " on ", "lower", "front", "rear", "left", "right", The orientation or positional relationship of the instructions such as "vertical", "horizontal", "top", "bottom", "inner", "outside" be orientation based on the figure or Positional relationship is merely for convenience of describing the present invention and simplifying the description, rather than the device or member of indication or suggestion meaning Part must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.

Basic embodiment：

Rod-type linear motor provided by the utility model includes shell, driving clamping institution 100 and movement parts 200.Institute Stating driving clamping institution 100 includes driving mechanism 110 and clamping institution 120, and driving mechanism 110 is magnet material, driving mechanism 110 nested installations are in the housing.Clamping institution 120 is connected with driving mechanism 110, clamping institution 120 can release conditions with It is converted between both states of locked state：Under the release conditions, movement parts 200 can be along axis with respect to clamping institution 120 It is moved upwards to the whole side of both direction；Under the locked state, movement parts 200 are locked with respect to 130 position of clamping piece, or Person's movement parts 200 are only capable of opposite clamping institution 120 and move upwards in one of side in axial both direction.

Each preference of basic embodiment is specifically described below.

Embodiment 1：

As shown in Fig. 6 to Figure 10, the clamping institution 120 includes clamping piece 130 and support ring 140, and clamping piece 130 is along length The one end in degree direction is mounted in support ring 140, and the other end then can be contacted or be separated with movement parts 200.Include multiple clamps Part 130 arranges that the support ring 140 is rigid member and is fastenedly connected in driving mechanism 110 along 140 circumferential direction of support ring, Convenient for carrying out stablizing support to clamping piece 130.As shown in figure 4, shown clamping piece 130 includes switch permanent magnet 131 and frame board 132, the N-S magnetic field line direction of permanent magnet 131 is switched along 132 length extending direction of frame board.Under the control of external magnetic field, pincers Position part 130 is attracted or repels, and then completes clamping institution 120 and turn between release conditions and locked state both states It changes, as shown in Fig. 8, Figure 10, under release conditions, the other end and the movement parts 200 of the clamping piece 130 are separated from each other；As Fig. 7, Shown in Fig. 9, under the locked state, the other end and the movement parts 200 of the clamping piece 130 contact with each other.

Embodiment 2：

Rod-type linear motor provided in this embodiment contains the clamping institution 120 of the offer of embodiment 1.It is provided in shell Multiple driving clamping institutions 100.For the same driving clamping institution 100, the rounded array cloth of multiple clamping pieces 130 above Set, along 140 axial direction of support ring, multiple clamping pieces 130 are located at the same side, along support ring 140 in the radial direction, it is more The arranged direction of the pole N-S of a clamping piece 130 is also consistent；Along 140 axial direction of support ring 130 position of clamping piece it is opposite Two driving clamping institutions 100 constitute a driving clamp group, and two driving clamping institutions 100 in a driving clamp group divide It is not defined as first unit, second unit.In embodiment, as shown in figs. 13 and 14, along support ring 140 in the radial direction, The clamping piece 130 of Unit one and the arranged direction of the pole N-S of clamping piece 130 of second unit are identical, under external magnetic fields, In the clamping institution 120 of first unit and the clamping institution 120 of second unit, always there is one in release conditions, at another In locked state, movement parts 200 can only always be moved along one of direction in axial both direction.

Embodiment 3：

Rod-type linear motor provided in this embodiment contains the driving clamp group of the offer of embodiment 2.Such as Figure 15, Tu16Suo Show, setting corresponds in each driving clamp group there are two clamp group is driven and is equipped with a movement parts 200 in shell, two fortune A connection piece 300 is provided between moving part 200, the connector 300 includes rigid frame 301 and push-and-pull elastic component 310, rigidity A rotor magnet 302 is provided in the space that frame 301 and push-and-pull elastic component 310 surround jointly.Rotor magnet 302 is non-circular Structure can circumferentially rotate under the action of the external magnetic field of variation, and influence two movement parts 200 in the axial direction Movement, it is preferable that the rotor magnet 302 be ellipsoidal structure.Be fastenedly connected with respectively in two movement parts 200 one group it is rigid Property frame 301, connected further through push-and-pull elastic component 310 between two groups of rigid frames 301.Along support ring 140 in the radial direction, The pole the N-S arranged direction of the clamping piece 130 of two driving clamp groups is opposite.It as shown in figure 15, is the pole N on the left of external magnetic field, it is right When side is the pole S, rotor magnet 302 rotates under the action of external magnetic field, stretches push-and-pull elastic component 310, and push outwardly Two movement parts 200；Since the driving clamp group in left side only limits the movement of corresponding movement parts 200 to the right, the driving pincers on right side Hyte only limits the movement of corresponding movement parts 200 to the left, and therefore, two movement parts 200 can be ejected outward.Such as Figure 16 institute Show, be the pole S on the left of external magnetic field, when right side is the pole N, rotor magnet 302 still rotates and pushes two movement parts outwardly 200, but since the driving clamp group in left side limits the movement of corresponding movement parts 200 to the left, the driving clamp group limit on right side The movement of corresponding movement parts 200 to the right has been made, thus two movement parts 200 can not be ejected.

Embodiment 4：

Rod-type linear motor provided in this embodiment contains the driving clamp group of the offer of embodiment 2.As shown in figure 21, also Comprising sleeve 210, the sleeve 210 is securedly mounted to interior of shell, and the movement parts 200 are slidably mounted in sleeve 210 In heart through-hole.A driving clamp group and a movement parts 200, the first unit, second unit point are provided only in shell It is not connected with movement parts 200 along axial both ends.Sleeve 210 in axial direction draws push-and-pull elastic component on the end face at both ends respectively It is connected respectively with the driving mechanism of first unit 110, the driving mechanism of second unit 110 after 310.

The driving mechanism 110 is magnet, and under the action of external magnetic field, driving mechanism 110 can move in left-right direction. When clamping institution 120 is in locked state, and clamping institution 120 includes 120 phase of clamping institution to the locking direction of movement parts 200 When generating the direction of movement tendency to movement parts 200, clamping institution 120 and movement parts 200 are relatively fixed, 110 band of driving mechanism Dynamic movement parts 200 move；When clamping institution 120 is in release conditions or clamping institution 120 to the locking side of movement parts 200 To with 120 relative motion part 200 of clamping institution generate movement tendency it is contrary when, clamping institution 120 and movement parts 200 it Between being capable of opposite sliding.The structure makes the controllable direction unidirectional in the axial direction of movement parts 200.

Embodiment 5：

The present embodiment is to provide the deformation of structure for embodiment 2, as shown in figure 5, the magnetic field N-S of switch permanent magnet 131 Line direction is along 132 thickness extending direction of frame board.

Embodiment 6：

The present embodiment is to provide the deformation of structure for embodiment 2, as shown in Figure 11, Figure 12, radial along support ring 140 On direction, the arranged direction of the pole N-S of the clamping piece 130 of the clamping piece 130 and second unit of first unit is on the contrary, in external magnetic Under field action, the clamping institution 120 of the clamping institution 120 of first unit and second unit is simultaneously in release conditions or simultaneously In locked state, movement parts 200 or in the axial direction by two-way locked or can be in axial both direction freely Activity.

Embodiment 7：

The present embodiment is to provide the deformation of structure for embodiment 3, as shown in Figure 17, Figure 18, radial along support ring 140 On direction, the pole the N-S arranged direction of the clamping piece 130 of two driving clamp groups is identical, in this way in synchronization, transports for two in total Always only one of which movement parts 200 in moving part 200 can be ejected outward.

Embodiment 8：

The present embodiment is to provide the deformation of structure for embodiment 3, and as shown in Figure 19, Figure 20, one is provided only in shell A driving clamp group, wherein first unit, second unit respectively correspond a movement parts 200, in this way in synchronization, in total two Always only one of which movement parts 200 in a movement parts 200 can be ejected outward.

Embodiment 9：

The present embodiment is to provide the deformation of structure for embodiment 4.As shown in Figure 22, Figure 23, in the support ring 140 It is trapezoidal trapezoidal annular groove 141 that cross section is provided on the wall surface of the hole of heart through-hole, and the width of rebate of trapezoidal annular groove 141 is greater than slot bottom Face width, one or more clamping pieces 130 are mounted in trapezoidal annular groove 141.Clamping piece 130 includes the first magnetic ball 151, the Two magnetic balls 152 and limit to elastic component 153, the first magnetic ball 151, the second magnetic ball 152 respectively with limit to elastic component 153 along axial Both ends are connected.First magnetic ball 151 is identical as the N-S extreme direction of the second magnetic ball 152, under the action of external magnetic field, clamping piece 130 Can be stuck on an oblique trough wall surface of trapezoidal annular groove 141, thus limit movement parts 200 in axial both direction one of them Movement on direction, after external magnetic field removes, the identical first magnetic ball 151 of N-S extreme direction and the second magnetic ball 152 are mutually inhaled Draw, limit and compressed to elastic component 153, clamping piece 130 releases the limitation to movement parts 200.In addition, limiting setting to elastic component 153 It sets, additionally it is possible to the first magnetic ball 151 and the magnetic pole of the second magnetic ball 152 be prevented to be flipped.Preferably, as shown in figure 30, the limit It is fastenedly connected in support ring 140 to the axial middle part of elastic component 153 by a transiting rod 154, in addition, in Left-side support ring Two magnetic balls on 140, compared with two magnetic balls on Right side support ring 140, N-S extreme direction is opposite.External magnetic field is alternation When the electromagnetic field of current control, the every variation in the direction of external magnetic field is primary, and movement parts 200 can generate primary movement to the left, because And in a cycle of alternating current, movement parts 200 can walk two steps.

Embodiment 10：

The present embodiment is to provide the deformation of structure for embodiment 9.As shown in Figure 24, Figure 25, the clamping piece 130 includes It first card ball 161, the second card ball 162 and limits to permanent magnet 163；First card ball 161 is limited to permanent magnet 163, the second card ball 162 are sequentially arranged, and 162 non-magnetic member of the first card ball 161 and the second card ball only plays clamping action；It limits to permanent magnet 163 and is Box-shaped structure is limited to permanent magnet 163 then under the action of external magnetic field, and the first card ball 161 or the second card ball 162 are pushed into pair On the oblique trough wall surface answered, clamping action is played.

Embodiment 11：

The present embodiment is to provide the deformation of structure for embodiment 10, described to limit to permanent magnet as shown in Figure 26, Figure 27 163 be spherical structure or ellipsoid structure.

Embodiment 12：

Rod-type linear motor provided in this embodiment contains the clamping piece 130 of the offer of embodiment 10, but to support ring 140 Structure deformed.As shown in Figure 24, Figure 25, the support ring 140 is S-shaped on length extending direction, so that Support ring 140 itself just can have certain elasticity, and along 200 axial direction of movement parts, support ring 140 is divided into left, center, right three Section, is successively denoted as the first ring segment 221, the second ring segment 222, third ring segment 223 respectively.In first ring segment 221 and third ring segment 223 Provided with trapezoidal annular groove 141 and clamping piece 130, and it is provided with annular fixture block 320 in the second ring segment 222, is used for support ring 140 one section of centre carries out axial restraint with shell.

Embodiment 13：

The present embodiment is to provide the deformation of structure for embodiment 12.As shown in figure 28, the clamping piece of third ring segment 223 130 include pull electromagnet 171, pull permanent magnet 172 and engagement post 173, and pull permanent magnet 172 and engagement post 173 fasten It connects, is provided with pinion rack 240 in movement parts 200.By pull electromagnet 171 attract or release pull permanent magnet 172 with The combination of engagement post 173 completes release or lock to movement parts 200 so that pinion rack 240 is left or contacted to engagement post 173 It closes.

Embodiment 14：

The present embodiment includes structure of the embodiment 1 to any one of embodiment 13, is provided with control electromagnet on shell 400, the external magnetic field is just provided by the control electromagnet 400.The cross-sectional shape of the movement parts 200 is round, ring The shapes such as shape, arc or polygon.

Embodiment 15：

The present embodiment is to provide the deformation of structure for embodiment 14.As shown in figure 29, it is embedded in and is equipped in movement parts 200 One or more first permanent magnets 230；On 200 cross section of movement parts, it is provided with multiple radially slotted, the first permanent magnet 230 peace Mounted in movement parts 200 it is two neighboring it is radially slotted between entity part in.Between external magnetic field and the first permanent magnet 230 also There may be the active forces of circumferential direction, so that movement parts 200 can circumferentially rotate, when external magnetic field changes every time, fortune Moving part 200 generates the rotation of low-angle, and with the accumulation of Small-angle Rotation, movement parts 200 just can be realized continuous rotation.

Embodiment 16：

The present embodiment is to provide the deformation of structure for embodiment 9.As shown in Figure 31, Figure 32, the movement parts 200 are magnetic Magnet is installed in body or movement parts 200；External magnetic field acts directly in movement parts 200 and movement parts 200 is driven to carry out Movement, and clamping piece 130 is then controlled by individual magnetic field, the individual magnetic field can be by be mounted on support ring 140 and/ Or the lock-bit electromagnet 450 on sleeve 210 generates.The different installation sites of electromagnet structure and different installations in the utility model Mode is as shown in figure 33.

Specific embodiment of the utility model is described above.It is to be appreciated that the utility model not office It is limited to above-mentioned particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims, This has no effect on the substantive content of the utility model.In the absence of conflict, the spy in embodiments herein and embodiment Sign can be arbitrarily combined with each other.

Claims (10)

1. a kind of rod-type linear motor, which is characterized in that include shell, driving clamping institution (100) and movement parts (200)； The driving clamping institution (100) includes driving mechanism (110) and clamping institution (120), and driving mechanism (110) is magnet material Material, the nested installation of driving mechanism (110) is in the housing；

Clamping institution (120) is connected with driving mechanism (110), clamping institution (120) can release conditions and locked state this It is converted between two states：

Under the release conditions, movement parts (200) can be in whole directions along axial both direction with respect to clamping institution (120) Upper movement；

Under the locked state, movement parts (200) are locked with respect to clamping piece (130) position or movement parts (200) are only capable of phase Clamping institution (120) is moved upwards in one of side in axial both direction.

2. rod-type linear motor according to claim 1, which is characterized in that the clamping institution (120) includes clamping piece (130) it is mounted on support ring (140) with support ring (140), the one end of clamping piece (130) along its length, the other end then can It is enough to contact or separate with movement parts (200)；

It is arranged comprising multiple clamping pieces (130) along support ring (140) circumferential direction, the support ring (140) is rigid member and tight It is solidly connected on driving mechanism (110)；

Shown clamping piece (130) includes switch permanent magnet (131) and frame board (132).

3. rod-type linear motor according to claim 2, which is characterized in that be provided with multiple driving clamping institutions in shell (100)；

In the same driving clamping institution (100), multiple rounded array arrangements of clamping piece (130), along support ring (140) On axial direction, multiple clamping pieces (130) are located at the same side, along support ring (140) in the radial direction, multiple clamping pieces (130) arranged direction of the pole N-S is consistent；

In clamping piece (130) position along support ring (140) axial direction, two opposite driving clamping institutions (100) constitute one A driving clamp group.

4. rod-type linear motor according to claim 3, which is characterized in that clamp group is driven in shell there are two settings, Correspondence is equipped with a movement parts (200) in each driving clamp group；Alternatively,

It is provided with a driving clamp group in shell, drives corresponding installation on two driving clamping institutions (100) in clamp group There is a movement parts (200)；

Be provided with a connection piece (300) between two movement parts (200), the connector (300) include rigid frame (301) with It pushes and pulls elastic component (310), is provided with a rotation magnetic in the space that rigid frame (301) surrounds jointly with push-and-pull elastic component (310) Iron (302).

5. rod-type linear motor according to claim 2, which is characterized in that the central through hole of the support ring (140) It is trapezoidal trapezoidal annular groove (141) that cross section is provided on wall surface of the hole, and one or more clamping pieces (130) are mounted on trapezoidal In annular groove (141)；

Clamping piece (130) includes the first magnetic ball (151), the second magnetic ball (152) and limits to elastic component (153), the first magnetic ball (151), the second magnetic ball (152) is connected to elastic component (153) along axial both ends with limit respectively；Alternatively,

Clamping piece (130) includes the first card ball (161), the second card ball (162) and limits to permanent magnet (163)；First card ball (161), it limits and is sequentially arranged to permanent magnet (163), the second card ball (162)；Alternatively,

Clamping piece (130) includes pull electromagnet (171), pull permanent magnet (172) and engagement post (173), pulls permanent magnet (172) be fastenedly connected, be provided in movement parts (200) pinion rack (240) with engagement post (173), engagement post (173) with engage Rack gear (240) matches.

6. rod-type linear motor according to claim 5, which is characterized in that described to limit into the axial direction of elastic component (153) Portion is fastenedly connected on support ring (140) by a transiting rod (154) of setting；

It is positioned opposite along shell axial direction comprising two driving clamping institutions (100), on the same driving clamping institution (100) The first magnetic ball (151) it is identical as the pole orientation of the second magnetic ball (152)；The on different two drivings clamping institution (100) One magnetic ball (151) is opposite with the pole orientation of the second magnetic ball (152).

7. rod-type linear motor according to claim 5, which is characterized in that along movement parts (200) axial direction, support ring (140) the first ring segment (221), the second ring segment (222), the third ring segment (223) of sequentially connected S-shaped arrangement are formed；

The trapezoidal annular groove (141) and clamping piece (130) are provided on first ring segment (221) and third ring segment (223)；Second ring Section (222) is axially relatively fixed by the annular fixture block (320) and shell of setting.

8. rod-type linear motor according to claim 2 or 5, which is characterized in that also include sleeve (210), the sleeve (210) it is securedly mounted to interior of shell, the movement parts (200) are slidably mounted in the central through hole of sleeve (210)；

It is positioned opposite along shell axial direction comprising two driving clamping institutions (100), the drive of two drivings clamping institution (100) Motivation structure (110) is magnet；

Sleeve (210) in axial direction drawn on the end face at both ends respectively after push-and-pull elastic component (310) respectively with two drives Motivation structure (110) is connected.

9. rod-type linear motor according to claim 1, which is characterized in that be provided with control electromagnet (400) on shell；

The movement parts (200) are magnet；Alternatively,

Insertion is equipped with one or more first permanent magnets (230) in the movement parts (200)；On movement parts (200) cross section, Be provided with it is multiple radially slotted, the first permanent magnet (230) be mounted on movement parts (200) it is two neighboring it is radially slotted between reality In body portion.

10. rod-type linear motor according to claim 8, which is characterized in that the support ring (140) and/or sleeve (210) lock-bit electromagnet (450) are provided on.