CN220915139U - Linear motor and vehicle with same - Google Patents

Abstract

The utility model discloses a linear motor and a vehicle with the linear motor, wherein the linear motor comprises a shell component and a push rod component, the shell component comprises a shell and a first guide structure, the first guide structure is arranged on the shell, the first guide structure is provided with a first guide hole and an avoidance hole, the push rod component comprises a push rod and a first guide rod, the first guide rod is arranged on the push rod, the first guide rod penetrates through the first guide hole and is matched with the first guide hole in a sliding way along the axial direction of the first guide rod, the push rod is suitable for penetrating through the avoidance hole, and an avoidance groove which is used for avoiding the first guide structure and is suitable for being matched with the first guide structure to limit the displacement of the push rod component relative to the shell component is formed between the push rod and the first guide rod. The linear motor provided by the utility model is stable in operation, convenient to control and convenient to assemble.

Description

Linear motor and vehicle with same

Technical Field

The utility model relates to the technical field of motors, in particular to a linear motor and a vehicle with the linear motor.

Background

In the related art, a linear motor or the like is generally provided in a vehicle to reduce vibration of the vehicle. However, the problems of clamping stagnation, eccentricity and the like of the two parts of the linear motor easily occur in the relative motion process, so that the thrust of the linear motor has larger fluctuation, and the linear motor is difficult to control.

Disclosure of utility model

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the linear motor which is stable in operation, convenient to control and convenient to assemble.

The utility model further provides a vehicle with the linear motor.

According to an embodiment of the first aspect of the present utility model, a linear motor includes: the shell assembly comprises a shell and a first guide structure, wherein the first guide structure is arranged on the shell, and is provided with a first guide hole and an avoidance hole; the push rod assembly comprises a push rod and a first guide rod, the first guide rod is arranged on the push rod, the first guide rod penetrates through the first guide hole and is matched with the first guide hole in a sliding mode along the axial direction of the first guide rod, the push rod is suitable for penetrating through the avoidance hole, and an avoidance groove used for avoiding the first guide structure and suitable for being matched with the first guide structure to limit the displacement of the push rod assembly relative to the shell assembly is formed between the push rod and the first guide rod.

The linear motor provided by the embodiment of the utility model has good running stability, is convenient to control, does not need to be provided with higher flatness on the surface of the magnetic part of the linear motor so as to reduce the processing difficulty and the assembly difficulty, and ensures that the push rod is suitable for being arranged in the avoidance hole in a penetrating way and limiting the linear motor through the avoidance groove, thereby being beneficial to simplifying the limiting mode of the linear motor.

In some embodiments, at least a portion of the pushrod is disposed within the housing, a portion of the pushrod being adapted to be exposed to the housing through the relief Kong Wai.

In some embodiments, the housing assembly further comprises a first magnetic member disposed within the housing, the pushrod assembly further comprises a second magnetic member disposed within the pushrod, at least a portion of the second magnetic member disposed within the housing opposite the first magnetic member, a portion of the second magnetic member adapted to be exposed to the housing through the relief Kong Wai.

In some embodiments, the first guide rod is in limit fit with the first guide hole in the circumferential direction of the first guide rod; and/or the push rod is suitable for being in limit fit with the avoidance hole in the circumferential direction of the first guide rod.

In some embodiments, the cross-sectional shape of the first guide bar is non-circular, and the opening shape of the first guide hole is matched with the cross-sectional shape of the first guide bar; and/or, first guide structure includes guide ring and a plurality of connecting rib, the guide ring is injectd first guiding hole, a plurality of connecting rib is followed the circumference interval of guide ring sets up, every the connecting rib is connected the guide ring with the casing, so that guide ring and adjacent two form between the connecting rib dodge the hole, dodge the groove and include first slot part and a plurality of second slot part, first slot part encircles first guide bar setting, a plurality of second slot part is followed the circumference interval setting of first slot part, every second slot part intercommunication first slot part just runs through the periphery wall of push rod, first slot part is used for dodging the guide ring, second slot part is used for dodging the connecting rib and is suitable for with the connecting rib is in the circumference spacing cooperation of first guide bar.

In some embodiments, the first guide structure includes a guide ring and a plurality of connection ribs, the guide ring defines the first guide hole, the plurality of connection ribs are disposed along a circumferential direction of the guide ring at intervals, each connection rib connects the guide ring with the housing, so that the avoidance hole is formed between the guide ring and two adjacent connection ribs, and in an axial direction of the first guide rod, a length of the guide ring is greater than or equal to a maximum length of the connection ribs.

In some embodiments, the engagement between the push rod and the first guide structure satisfies at least one of the following conditions: condition A1: the hole wall of the first guide hole and/or the peripheral wall of the first guide rod are/is provided with a first sealing element, and the first sealing element is sealed between the first guide structure and the first guide rod; condition A2: the wall of the first guide hole and/or the peripheral wall of the first guide rod is/are provided with a first lubricating piece; condition A3: the wall of the avoidance hole and/or the wall of the avoidance groove are provided with a second sealing piece, and the second sealing piece is suitable for sealing between the first guiding structure and the push rod; condition A4: and the wall of the avoidance hole and/or the wall of the avoidance groove is provided with a second lubricating piece.

In some embodiments, the linear motor further comprises: the first buffer piece is arranged on the bottom wall of the avoidance groove and is suitable for being matched with the first guide structure to limit the displacement of the push rod assembly relative to the shell assembly; the second buffer piece is arranged on the first guide rod and is positioned outside the shell, and the second buffer piece is suitable for being matched with the first guide structure to limit the displacement of the push rod assembly relative to the shell assembly.

In some embodiments, the linear motor further comprises: the first support is fixed with the part of the first guide rod extending out of the shell; the second bracket is fixed with the shell; and the damping spring is sleeved outside the second buffer piece and is stopped between the first bracket and the second bracket.

In some embodiments, the first guide structure is one or more, and at least one of two ends of the shell in the sliding direction is provided with the first guide structure; and/or the first guide structure is provided adjacent to one of both ends of the housing in the slip direction.

In some embodiments, the two ends of the housing in the sliding direction are a first end and a second end, respectively, the first guiding structure is provided at the first end, or the first guiding structure is provided adjacent to the first end relative to the second end, and the housing assembly further comprises: the second guide structure is arranged at the second end and is matched with the push rod in a sliding way along the axial direction of the first guide rod.

In some embodiments, the second guide structure includes an end cap closing the second end and a second guide rod provided at a side of the end cap facing the housing and located within the housing, the push rod being formed with a second guide hole, the second guide rod being slidably fitted into the second guide hole; and/or, the push rod is formed with an avoidance space, a guide bearing is arranged in the avoidance space, and the second guide rod penetrates through the guide bearing and is suitable for being accommodated in the avoidance space.

A vehicle according to an embodiment of a second aspect of the present utility model includes a linear motor according to the embodiment of the first aspect of the present utility model described above.

According to the vehicle provided by the embodiment of the utility model, the linear motor is adopted, so that the running stability of the vehicle is improved, and the control and the assembly are facilitated.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

Fig. 1 is a cross-sectional view of a linear motor according to one embodiment of the present utility model;

fig. 2 is a cross-sectional view of the linear motor shown in fig. 1 when stretched;

FIG. 3 is a cross-sectional view of the linear motor shown in FIG. 1 when contracted;

FIG. 4 is a schematic view of the housing assembly shown in FIG. 1;

FIG. 5 is a schematic view of the pushrod assembly shown in FIG. 1;

FIG. 6 is another schematic view of the push rod assembly shown in FIG. 5;

FIGS. 7 (a) -7 (b) are cross-sectional views of the push rod assembly shown in FIG. 6;

FIG. 8 is a schematic view of the push rod and first guide rod shown in FIG. 5;

FIG. 9 is a schematic view of the second guide structure shown in FIG. 1;

fig. 10 is a schematic view of a linear motor according to another embodiment of the present utility model;

FIG. 11 is a schematic illustration of a push rod assembly of the linear motor shown in FIG. 10;

Fig. 12 is a schematic view of a first guide structure of the linear motor shown in fig. 10;

fig. 13 is another schematic view of the linear motor shown in fig. 10, illustrating an initial state of the linear motor;

fig. 14 is a further schematic view of the linear motor shown in fig. 10, illustrating a state of a stretching limit of the linear motor;

Fig. 15 is still another schematic view of the linear motor shown in fig. 10, illustrating a contraction limit state of the linear motor;

FIG. 16 is a schematic view of a housing assembly of a linear motor according to yet another embodiment of the present utility model;

FIG. 17 is a schematic diagram of a vehicle according to one embodiment of the utility model.

Reference numerals:

Vehicle 200, linear motor 100,

The housing assembly 1, the housing 11, the first end 11a, the second end 11b, the first connection structure 11c, the first guide structure 12, the first guide hole 12a, the escape hole 12b, the guide ring 121, the connection rib 122, the first magnetic member 13, the first member 131, the second guide structure 14, the end cap 141, the second connection structure 141a, the third connection structure 141b, the second guide rod 142, the push rod assembly 2, the push rod 21, the second guide hole 21a, the escape groove 21b, the first groove 21c, the second groove 21d, the mounting groove 21e, the first guide rod 22, the second magnetic member 23, the second member 231, the third member 232, the first cushion member 3, the second cushion member 4, the first bracket 5, the second bracket 6, and the damper spring 7.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

The following disclosure provides many different embodiments, or examples, for implementing different structures of the utility model. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the utility model. Furthermore, the present utility model may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present utility model provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the applicability of other processes and/or the use of other materials.

Next, referring to the drawings, a linear motor 100 according to an embodiment of the present utility model is described.

As shown in fig. 1 to 5, the linear motor 100 includes a housing assembly 1, the housing assembly 1 includes a housing 11 and a first guide structure 12, the first guide structure 12 is provided on the housing 11, and the first guide structure 12 is formed with a first guide hole 12a; the linear motor 100 further includes a push rod assembly 2, where the push rod assembly 2 includes a push rod 21 and a first guide rod 22, the first guide rod 22 is disposed on the push rod 21, the first guide rod 22 is penetrating through the first guide hole 12a, and the first guide rod 22 is slidably matched with the first guide hole 12a along an axial direction of the first guide rod 22, so that in the embodiment of the present application, the housing assembly 1 and the push rod assembly 2 are movably matched along an axial direction, and the above arrangement is convenient for implementing guidance on the relative movement of the housing assembly 1 and the push rod assembly 2 along the axial direction, that is, the first guide rod 22 and the first guide hole 12a are matched to guide a relative movement direction of the push rod assembly 2 and the housing assembly 1, so as to improve stability of the relative movement of the push rod assembly 2 and the housing assembly 1, so as to reduce probability of tilting of the push rod assembly 2 relative to the housing assembly 1 (for example, the probability of tilting of the push rod assembly 2 relative to the housing assembly 1 caused by a magnetic force generated between a first magnetic member 13 and a second magnetic member 23 described later is reduced), thereby effectively suppressing seizing and eccentricity generated in a process of the push rod assembly 2 relative to the housing assembly 1 to a certain extent, and facilitating stable control of the linear fluctuation 100; meanwhile, the guidance of the relative moving direction of the push rod assembly 2 and the shell assembly 1 is not required to be realized through magnetic pieces (such as a first magnetic piece 13 and a second magnetic piece 23 which are described later) of the linear motor 100, and the surface of the magnetic piece is not required to be provided with higher flatness, so that the processing difficulty and the assembly difficulty of the magnetic piece are reduced, and the production efficiency is improved.

For example, the magnetic member (e.g., a first magnetic member 13 described later) of the housing assembly 1 cooperates with the magnetic member (e.g., a second magnetic member 23 described later) of the push rod assembly 2, so that when the housing assembly 1 and the push rod assembly 2 move relatively in the axial direction, the magnetic member of the housing assembly 1 cooperates with the magnetic member of the push rod assembly 2 to make the linear motor 100 output vibration damping power, thereby achieving the vibration damping effect of the linear motor 100. Illustratively, the vehicle 200 has a plurality of linear motors 100, the plurality of linear motors 100 are respectively mounted on different wheels, and the plurality of linear motors 100 can be respectively and independently controlled to realize adjustment of the single-side vehicle body posture of the vehicle 200 (for example, lifting or lowering the single-side vehicle body height of the vehicle 200); taking the relative movement direction of the push rod assembly 2 and the shell assembly 1 as an example, the push rod assembly 2 and the shell assembly 1 can be movably matched in the up-down direction, namely, the shell assembly 1 is directly or indirectly connected with a vehicle body, the push rod assembly 2 is directly or indirectly connected with a wheel, or the shell assembly 1 is directly or indirectly connected with a wheel, and the push rod assembly 2 is directly or indirectly connected with a vehicle body, the shell assembly 1 and the push rod assembly 2 are movably matched to adjust the axial length of the linear motor 100 so as to adjust the posture of the vehicle body, thereby adapting to different running conditions of the vehicle 200 and keeping the running stability of the vehicle 200.

In the description of the present application, the "axial direction" refers to the axial direction of the first guide rod 22 and the axial direction of the linear motor 100, and refers to the extending direction of the dash-dot line L in fig. 1 and 5, and the dash-dot line L is the central axis of the first guide rod 22; in the following description, "circumferential" refers to the circumferential direction of the first guide rod 22 and the circumferential direction of the linear motor 100, and refers to the direction around the dash-dot line L in fig. 1 and 5, "radial" refers to the radial direction of the first guide rod 22 and the radial direction of the linear motor 100, and refers to the direction passing through the central axis of the first guide rod 22 on the radial plane of the first guide rod 22, and the radial planes are perpendicular to the axial direction, and the "axial direction", "radial direction", and "circumferential direction" are perpendicular to each other.

As shown in fig. 2, fig. 4 and fig. 5, the first guiding structure 12 is further formed with an avoidance hole 12b, the push rod 21 is adapted to be penetrated through the avoidance hole 12b, an avoidance groove 21b is formed between the push rod 21 and the first guiding rod 22, the avoidance groove 21b is used for avoiding the first guiding structure 12, then in the process of relative movement of the push rod assembly 2 and the housing assembly 1, the push rod 21 is adapted to be matched with the avoidance hole 12b, and the first guiding structure 12 is adapted to be matched with the avoidance groove 21b, so that limitation of the first guiding structure 12 on the maximum relative position between the housing assembly 1 and the push rod assembly 2 is reduced, namely limitation of the first guiding structure 12 on the movement stroke of the linear motor 100 is reduced.

It will be appreciated that throughout the range of travel of the push rod assembly 2 and the housing assembly 1 relative to each other, the first guide structure 12 is always engaged with the relief groove 21b, such as the push rod assembly 2 having first and second extreme positions relative to the housing assembly 1 in the axial direction, between which the push rod assembly 2 moves relative to the housing assembly 1, whether in the first or second extreme positions, at least a portion of the first guide structure 12 is engaged with the relief groove 21b; or in the whole travel range of the relative movement of the push rod assembly 2 and the housing assembly 1, the first guiding structure 12 can be switched between a state of being matched with the avoidance groove 21b and a state of being separated from the avoidance groove 21b (as shown in fig. 1-3), for example, the push rod assembly 2 has a first limit position and a second limit position relative to the housing assembly 1 in the axial direction, the push rod assembly 2 moves between the first limit position and the second limit position relative to the housing assembly 1, at least part of the first guiding structure 12 is matched with the avoidance groove 21b in the first limit position, at this time, the linear motor 100 can be in a stretching limit state, at the second limit position, the first guiding structure 12 is separated from the avoidance groove 21b (i.e. the first guiding structure 12 is separated from the push rod 21), and at this time, the linear motor 100 can be in a contraction limit state.

Wherein dodge the groove 21b and be suitable for with first guide structure 12 cooperation in order to restrict the displacement of push rod subassembly 2 for casing subassembly 1, then dodge the groove 21b and be suitable for with first guide structure 12 cooperation in order to restrict the extreme position of push rod subassembly 2 for casing subassembly 1 to make in the whole range of travel of push rod subassembly 2 and casing subassembly 1 relative movement, the magnetic part of casing subassembly 1 and the magnetic part of push rod subassembly 2 all can reliable cooperate, conveniently avoid casing subassembly 1 and push rod subassembly 2 to break away from the cooperation, conveniently avoid the magnetic part of casing subassembly 1 and the magnetic part of push rod subassembly 2 to break away from the cooperation. It can be seen that, in the embodiment of the present application, the avoidance groove 21b is adapted to cooperate with the first guiding structure 12 to limit the stretching limit or the shrinking limit of the linear motor 100, and then the avoidance groove 21b is adapted to cooperate with the first guiding structure 12 to limit the maximum axial length or the minimum axial length of the linear motor 100; in other words, when the first guide structure 12 is one, the first guide structure 12 is adapted to cooperate with the avoidance groove 21b to limit the stretching limit, or the shrinking limit, of the linear motor 100, and when the first guide structure 12 is plural, one of the first guide structures 12 may cooperate with the corresponding avoidance groove 21b to limit the stretching limit, or the shrinking limit, of the linear motor 100, and one of the remaining first guide structures 12 may cooperate with the corresponding avoidance groove 21b to limit the shrinking limit, or the shrinking limit, of the linear motor 100, but is not limited thereto.

It can be seen that, in the embodiment of the present application, the first guiding structure 12 is not closed, but is generally hollow (e.g. partially hollow) to form the first guiding hole 12a and the avoiding hole 12b.

Taking the relative movement direction of the push rod assembly 2 and the housing assembly 1 as an example, the first guide structure 12 is provided at the upper portion of the housing 11 (i.e., at a portion above the center of the housing 11 in the up-down direction), the first guide rod 22 is provided at the upper portion of the push rod 21 and protrudes upward out of the push rod 21, the escape groove 21b is formed at the upper surface of the push rod 21 and is recessed downward from a portion of the upper surface of the push rod 21, i.e., the upper side of the escape groove 21b is opened, and the lower side groove wall of the escape groove 21b is formed as the groove bottom wall of the escape groove 21 b; when the push rod assembly 2 moves axially relative to the housing assembly 1, the avoidance groove 21b allows the first guide structure 12 to be matched with the avoidance groove 21b and can move downwards relative to the avoidance groove 21b, if the push rod assembly 2 moves relative to the housing assembly 1 to enable the first guide structure 12 to directly or indirectly abut against the groove bottom wall of the avoidance groove 21b, the first guide structure 12 is limited and cannot move downwards relative to the avoidance groove 21b, namely, the push rod 21 is limited by the first guide structure 12 and cannot move upwards relative to the first guide structure 12, so that the push rod assembly 2 is prevented from being separated upwards from the housing assembly 1, and the maximum axial length of the linear motor 100 is limited.

Of course, in other examples, the first guide structure 12 may be provided at a lower portion of the housing 11 (i.e., a portion below a center of the housing 11 in the up-down direction), the first guide rod 22 may be provided at a lower portion of the push rod 21 and extend downward out of the push rod 21, the escape groove 21b may be formed at a lower surface of the push rod 21 and recessed upward from a portion of the lower surface of the push rod 21, i.e., a lower side of the escape groove 21b may be opened, and an upper side groove wall of the escape groove 21b may be formed as a groove bottom wall of the escape groove 21 b; when the push rod assembly 2 moves axially relative to the housing assembly 1, the avoidance groove 21b allows the first guide structure 12 to be matched with the avoidance groove 21b and can move upwards relative to the avoidance groove 21b, if the push rod assembly 2 moves relative to the housing assembly 1 so that the first guide structure 12 directly or indirectly abuts against the groove bottom wall of the avoidance groove 21b, the first guide structure 12 is limited and cannot continue to move upwards relative to the avoidance groove 21b, namely, the push rod 21 is limited by the first guide structure 12 and cannot continue to move downwards relative to the first guide structure 12, so that the push rod assembly 2 is prevented from being separated downwards from the housing assembly 1, and the minimum axial length of the linear motor 100 is limited.

In still other examples, the upper and lower parts of the housing 11 are respectively provided with the first guide structures 12, and then the upper and lower parts of the push rod 21 are respectively provided with the first guide rods 22, and the upper and lower surfaces of the push rod 21 are respectively formed with the escape grooves 21b, at this time, the first guide structures 12 of the upper part of the housing 11 are adapted to cooperate with the escape grooves 21b of the upper surface of the push rod 21 to limit the displacement of the push rod assembly 2 relative to the housing assembly 1, and the first guide structures 12 of the lower part of the housing 11 are adapted to cooperate with the escape grooves 21b of the lower surface of the push rod 21 to limit the displacement of the push rod assembly 2 relative to the housing assembly 1.

According to the linear motor 100 of the embodiment of the utility model, the first guide structure 12 is provided with the first guide hole 12a and the avoidance hole 12b, and the first guide hole 12a and the first guide rod 22 are axially slidably matched to realize the relative movement of the push rod assembly 2 and the shell assembly 1, so that the running stability of the linear motor 100 is improved, the thrust fluctuation of the linear motor 100 is stabilized, the control is convenient, and meanwhile, the surface of the magnetic part of the linear motor 100 does not need to be provided with higher flatness, so that the processing difficulty and the assembly difficulty of the magnetic part are reduced, the push rod 21 is suitable for penetrating the avoidance hole 12b, the limit of the linear motor 100 is realized through the avoidance groove 21b, the limit limiting mode of the linear motor 100 is facilitated to be simplified, and the linear motor 100 has a simple structure and good practicability and applicability.

It will be appreciated that in embodiments of the present application, the relief aperture 12b may be defined by the first guide structure 12 alone (as shown in fig. 12), or the relief aperture 12b may be defined by the first guide structure 12 in cooperation with the housing 11 (as shown in fig. 4).

In some embodiments, as shown in fig. 2 and 13-15, at least a portion of the push rod 21 is disposed within the housing 11, and a portion of the push rod 21 is adapted to be exposed to the housing 11 through the relief hole 12b, i.e., a portion of the push rod 21 is adapted to extend outside the housing 11 through the relief hole 12 b. It can be seen that the above-mentioned part of the push rod 21 can be switched between a position provided in the housing 11 and a position exposed to the housing 11, and that a still further part of the push rod 21 can be provided in the housing 11 all the time.

It can be appreciated that in the working process of the linear motor 100, heat is usually generated in the casing 11, the internal temperature of the casing 11 is higher, and a part of the push rod 21 can be exposed out of the casing 11 through the avoidance hole 12b, on one hand, because the internal heat of the casing 11 can be dissipated out of the casing 11 through the avoidance hole 12b, the part of the push rod 21 exposed out of the casing 11 through the avoidance hole 12b can directly dissipate heat with the external environment, for example, heat dissipation can be realized through natural wind and the like, and meanwhile, the reciprocating movement of the push rod assembly 2 relative to the casing 11 can also form a certain air flow, so that the outflow of hot air in the casing 11 through the avoidance hole 12b is facilitated, the internal heat of the casing 11 is conveniently dissipated, the internal temperature of the casing 11 is reduced, the heat dissipation capability of the linear motor 100 is improved, the influence of the high temperature on the internal components of the casing 11 is facilitated to be reduced, the performance of the linear motor 100 is improved, a cooling device is not required to be independently arranged, the structure of the linear motor 100 is simplified, the cost of the linear motor 100 is reduced, the space occupation of the linear motor 100 is improved, and the arrangement difficulty of the linear motor 100 is reduced; on the other hand, the axial length of the superposition part of the push rod assembly 2 and the shell assembly 1 can be not limited by the axial dimension of the shell 11 to a certain extent, and compared with the prior art, the effective matching length of the push rod assembly 2 and the shell assembly 1 is longer, the length of the shell 11 is not required to be increased to increase the effective combination length or the coil current to increase the magnetic field intensity, and larger thrust can be obtained, so that the damping adjustment effect of the linear motor 100 is better, and the vehicle body posture adjustment effect is better.

It will be appreciated that in the prior art, the end portion of the housing is closed, in order to ensure that the stroke between the push rod assembly and the housing assembly meets the requirement of vehicle body posture adjustment, a housing with a larger axial length needs to be provided, the stroke adjustment requirement is met, and meanwhile, the effective combination length can be further increased to meet the thrust requirement, while the first guiding structure 12 is provided with the avoidance hole 12b so that part of the push rod 21 can be exposed out of the housing 11, the size of the housing 11 is not required to be increased, a part of the push rod assembly 2 can extend out of the housing assembly 1 to meet the requirement of vehicle body posture adjustment, the effective combination length is facilitated to be increased, the cost can be reduced (without changing a large-sized housing), and the damping adjustment effect can be met with smaller current due to the increase of the effective combination length, and the energy consumption of the vehicle 200 can be improved. Wherein, the effective combination length refers to the length of the axially overlapped part of the magnetic part of the shell component 1 and the magnetic part of the push rod component 2 (namely the axial length of the radially opposite part of the two), so that the effective combination length is increased, the thrust of the electromagnetic actuator can be improved, and the application range of the linear motor 100 is enlarged

Illustratively, the push rod assembly 2 further includes a second magnetic member 23, the second magnetic member 23 is a coil, the coil generates heat in the damping adjustment process of the linear motor, the coil is damaged by heat accumulation, the service life of the linear motor is reduced, and the heat dissipation device increases the production cost of the linear motor, increases the space occupation of the linear motor, and increases the arrangement difficulty of the linear motor; according to the technical scheme, the heat dissipation of the push rod 21 is conveniently realized, and meanwhile, the heat in the shell 11 is conveniently dissipated in time, so that the temperature of a coil is reduced, meanwhile, the damage of the internal parts of the shell 11 caused by high temperature can be avoided to a certain extent, and the service life of the linear motor 100 is prolonged.

In some embodiments, as shown in fig. 1-5 and 13-15, the housing assembly 1 further includes a first magnetic member 13, the first magnetic member 13 being disposed within the housing 11; the push rod assembly 2 further includes a second magnetic member 23, the second magnetic member 23 is disposed on the push rod 21, at least a portion of the second magnetic member 23 is disposed in the housing 11, and the at least a portion of the second magnetic member 23 is opposite to the first magnetic member 13, so as to implement the cooperation between the first magnetic member 13 and the second magnetic member 23. Thus, the linear motor 100 has electromagnetic driving force through the first magnetic element 13 and the second magnetic element 23, and the linear motor 100 is stretched or contracted, so that the linear motor 100 has stable and reliable driving force.

It can be seen that when the housing assembly 1 and the push rod assembly 2 relatively move along the axial direction, the first magnetic member 13 and the second magnetic member 23 cooperate to make the linear motor 100 output vibration damping power, so as to achieve the vibration damping effect of the linear motor 100. Illustratively, the first magnetic member 13 is a ferromagnetic member (e.g. magnetic steel, a magnet, a permanent magnet, etc.), the second magnetic member 23 is an electromagnetic member (e.g. a coil, etc.), the second magnetic member 23 generates a magnetic field after being electrified, and the magnetic field generated by the second magnetic member 23 after being electrified interacts with the magnetic field of the first magnetic member 13 to generate an acting force, so that the housing assembly 1 and the push rod assembly 2 have a tendency to move relatively along the axial direction, that is, form a thrust or a damping of the linear motor 100, so that when the linear motor 100 is used in the vehicle 200, the linear motor 100 can change the height of the vehicle body relative to the wheels to realize the adjustment of the posture of the whole vehicle body, thereby facilitating the guarantee that the vehicle 200 runs in a proper posture; at this time, the magnitude and the direction of the current of the second magnetic piece 23 can be changed to change the magnetic field intensity and the magnetic field direction of the second magnetic piece 23 so as to change the acting force between the shell component 1 and the push rod component 2, thereby realizing the adjustment of the thrust of the linear motor 100 and the damping of the linear motor 100, further realizing the lifting or the lowering of the posture of the whole vehicle and playing a role of vibration reduction; of course, the second magnetic member 23 may also be a ferromagnetic member, and the first magnetic member 13 is an electromagnetic member; the first magnetic member 13 and the second magnetic member 23 are ferromagnetic members; but is not limited thereto.

Wherein, a part of the second magnetic member 23 is adapted to be exposed to the housing 11 through the escape hole 12b, and then the above part of the second magnetic member 23 may be disposed on a part of the push rod 21 capable of being exposed to the housing 11 through the escape hole 12b, and when the above part of the push rod 21 is exposed to the housing 11 through the escape hole 12b, it is achieved that a part of the second magnetic member 23 is also exposed to the housing 11 through the escape hole 12 b. At this time, when the linear motor 100 is in the contraction limit state, the entire second magnetic member 23 may be located in the housing 11, and when the linear motor 100 is in the stretching limit state, a portion of the second magnetic member 23 is exposed to the housing 11 through the escape hole 12b, and another portion of the second magnetic member 23 is still located in the housing 11, so that the portion of the second magnetic member 23 may be switched between a position located in the housing 11 and a position exposed to the housing 11 along with the push rod 21, and a further portion of the second magnetic member 23 may be located in the housing 11.

It can be seen that, in the above-mentioned technical scheme, the arrangement space that the rational utilization push rod 21 of being convenient for provided realizes the rational arrangement of second magnetic part 23, is favorable to promoting the effective cooperation length of first magnetic part 13 and second magnetic part 23, promotes linear electric motor 100's thrust, also can make things convenient for the heat dissipation of second magnetic part 23 simultaneously, is favorable to further promoting the radiating effect of push rod subassembly 2.

As shown in fig. 2, 3 and 5, the second magnetic member 23 includes a plurality of second parts 231 spaced apart along the axial direction of the first guide rod 22, all of the second parts 231 are located in the housing 11 when the linear motor 100 is in the contracted limit state, and a part of the second parts 231 are exposed out of the housing 11 through the escape holes 12b when the linear motor 100 is in the stretched limit state, and another part of the second parts 231 are still located in the housing 11; at this time, the push rod 21 is formed with a plurality of mounting grooves 21e provided at intervals in the axial direction, and each mounting groove 21e is fitted with one second member 231, and the escape groove 21b penetrates at least one mounting groove 21e in the axial direction. Or as shown in fig. 11 to 15, the second magnetic member 23 includes a plurality of third parts 232 sequentially arranged in the circumferential direction of the first guide bar 22, each third part 232 being located in the housing 11 or almost all of each third part 232 being located in the housing 11 when the linear motor 100 is in the contraction limit state, and a part of each third part 232 being exposed to the housing 11 through the escape hole 12b and another part of each third part 232 being located in the housing 11 when the linear motor 100 is in any state between the initial state and the stretching limit state; at this time, the third member 232 may be provided on the outer peripheral wall of the push rod 21.

Of course, in other embodiments, the portion of the push rod 21 that can be exposed to the housing 11 through the avoidance hole 12b may not be provided with the second magnetic member 23, and the second magnetic member 23 is always located in the housing 11 throughout the entire travel range of the linear motor 100.

In some embodiments, as shown in fig. 1, the first magnetic member 13 is provided on an inner wall of the housing 11. Illustratively, the first magnetic member 13 includes a plurality of first parts 131 sequentially disposed along an axial direction, and an axial length of the first magnetic member 13 is greater than an axial length of the second magnetic member 23, so as to facilitate lifting an effective mating length of the first magnetic member 13 and the second magnetic member 23.

In some embodiments, the first guide bar 22 is in limit fit with the first guide hole 12a in the circumferential direction of the first guide bar 22; and/or, as shown in fig. 4, 5, and 13-15, the push rod 21 is adapted to be in limit fit with the avoidance hole 12b in the circumferential direction of the first guide rod 22, and then the first guide structure 12 and the avoidance groove 21b are in limit fit in the circumferential direction of the first guide rod 22. In other words, the first guide rod 22 and the first guide hole 12a form a first set of coordination, and the push rod 21 and the avoiding hole 12b form a second set of coordination, so that at least one of the first set of coordination and the second set of coordination is configured to limit coordination in the circumferential direction of the first guide rod 22, so that the push rod assembly 2 can be meshed with each other conveniently when moving relative to the housing assembly 1, the problem of heel rotation of the push rod assembly 2 around the central axis L of the first guide rod 22 under the action of external force is solved, the moving stability of the push rod assembly 2 relative to the housing assembly 1 is further improved, a heel rotation preventing structure is not required, the structure of the linear motor 100 is simplified conveniently, and the cost is reduced.

In the description of the embodiments of the present application, the term "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. The character "/" herein generally indicates that the associated object is an "or" relationship.

It will be appreciated that, when the first guide rod 22 is in limit fit with the first guide hole 12a in the circumferential direction, the outer peripheral wall of the first guide rod 22 may be in direct limit fit with the hole wall of the first guide hole 12a, or the outer peripheral wall of the first guide rod 22 may be in limit fit with the hole wall of the first guide hole 12a by other means (e.g., a first seal, a first lubricant, which will be described later); similarly, when the push rod 21 is adapted to be in limit fit with the avoidance hole 12b in the circumferential direction, the surface of the push rod 21 may be in direct limit fit with the hole wall of the avoidance hole 12b, or the surface of the push rod 21 may be in limit fit with the hole wall of the avoidance hole 12b through other components (for example, a second seal member, a second lubricant member, which will be described later).

In some embodiments, the cross-sectional shape of the first guide bar 22 is non-circular, and the aperture shape of the first guide hole 12a is adapted to the cross-sectional shape of the first guide bar 22 to achieve a circumferential limit fit of the first guide bar 22 with the first guide hole 12 a; and/or, as shown in fig. 4 and fig. 12-15, the first guiding structure 12 includes a guiding ring 121 and a plurality of connecting ribs 122, the guiding ring 121 defines a first guiding hole 12a, the plurality of connecting ribs 122 are arranged along the circumferential direction of the guiding ring 121 at intervals, each connecting rib 122 connects the guiding ring 121 and the housing 11, so that an avoidance hole 12b is formed between the guiding ring 121 and two adjacent connecting ribs 122, the avoidance groove 21b includes a plurality of second groove portions 21d, the first groove portions 21c are arranged around the first guiding rod 22, the plurality of second groove portions 21d are arranged along the circumferential direction of the first groove portions 21c at intervals, each second groove portion 21d is communicated with the first groove portion 21c and penetrates the peripheral wall of the pushing rod 21, the first groove portion 21c is used for avoiding the guiding ring 121, and the second groove portions 21d are used for avoiding the connecting ribs 122 and are suitable for being in circumferential direction limiting fit with the connecting ribs 122 in the first guiding rod 22 so as to realize circumferential direction limiting fit of the pushing rod 21 and the avoidance hole 12 b.

Further, when the first guiding structure 12 includes the guiding ring 121 and the plurality of connecting ribs 122, the first groove portion 21c is adapted to be in limit fit with the guiding ring 121 in the circumferential direction of the first guiding rod 22, and also the circumferential limit fit between the push rod 21 and the avoiding hole 12b can be achieved.

Illustratively, the cross-sectional shape of the first guide bar 22 and the open-pore shape of the first guide hole 12a are both elliptical; the plurality of connection ribs 122 are uniformly spaced apart in the circumferential direction of the guide ring 121. It can be understood that the shape of the inner peripheral wall of the guide ring 121 is the opening shape of the first guide hole 12a, and the number, the size, etc. of the connecting ribs 122 and the guide ring 121 can be adjusted according to practical requirements, for example, the number of the connecting ribs 122 can be two, three, four, five, etc.

In some embodiments, as shown in fig. 4, 12 and 16, the first guide structure 12 includes a guide ring 121 and a plurality of connection ribs 122, the guide ring 121 defining a first guide hole 12a, the plurality of connection ribs 122 being disposed at intervals along a circumferential direction of the guide ring 121, each connection rib 122 connecting the guide ring 121 and the housing 11 such that a relief hole 12b is formed between the guide ring 121 and two adjacent connection ribs 122; the length of the guide ring 121 is greater than or equal to the maximum length of the connecting rib 122 in the axial direction of the first guide rod 22, so that on the premise of realizing reliable strength of the first guide structure 12, the guide matching length between the first guide structure 12 and the first guide rod 22 is beneficial to properly improving the motion stability of the push rod assembly 2 relative to the housing assembly 1. At this time, the structure of the escape groove 21b is not particularly limited, and the escape groove 21b may be configured to include the first groove portion 21c and the plurality of second groove portions 21d as described above, but is not limited thereto.

Illustratively, the maximum length of the connection rib 122 is the length of one end of the connection rib 122 connected to the guide ring 121 in the axial direction of the first guide bar 22.

It will be appreciated that when the first guide structure 12 is provided at one end of the housing 11 in the axial direction of the first guide bar 22, the guide ring 121 may extend outwardly of the housing 11 and/or inwardly of the housing 11 to increase the axial length of the guide ring 121.

In some embodiments, the cooperation between the push rod 21 and the first guide structure 12 satisfies at least one of the following conditions: condition A1: the hole wall of the first guide hole 12a and/or the peripheral wall of the first guide rod 22 are provided with a first sealing element, and the first sealing element is sealed between the first guide structure 12 and the first guide rod 22 so as to realize the sealing fit between the first guide hole 12a and the first guide rod 22, and improve the dustproof and other capabilities of the linear motor 100; condition A2: the wall of the first guide hole 12a and/or the outer circumferential wall of the first guide bar 22 is provided with a first lubricant so as to reduce friction between the first guide structure 12 and the first guide bar 22 and reduce running resistance of the linear motor 100; condition A3: the wall of the avoidance hole 12b and/or the wall of the avoidance groove 21b are/is provided with a second sealing element, and the second sealing element is suitable for sealing between the first guiding structure 12 and the push rod 21 so as to realize sealing fit of the first guiding structure 12 and the push rod 21, and improve the dustproof capacity and the like of the linear motor 100; condition A4: the wall of the avoidance hole 12b and/or the wall of the avoidance groove 21b is provided with a second lubricant so as to reduce friction between the first guide structure 12 and the push rod 21 and reduce running resistance of the linear motor 100. It will be appreciated that under at least one of conditions A3 and A4, a certain mounting gap needs to be reserved between the groove wall of the relief groove 21b and the wall of the relief hole 12b to mount the second seal and/or the second lubricant.

In some embodiments, as shown in fig. 1-3, the linear motor 100 further includes at least one of a first buffer member 3 and a second buffer member 4, the first buffer member 3 being provided at a bottom wall of the avoidance groove 21b, the first buffer member 3 being adapted to cooperate with the first guide structure 12 to limit displacement of the push rod assembly 2 relative to the housing assembly 1; the second cushioning member 4 is disposed on the first guide bar 22 and outside the housing 11, and the second cushioning member 4 is adapted to cooperate with the first guide structure 12 to limit displacement of the push rod assembly 2 relative to the housing assembly 1.

It can be seen that the first buffer member 3 can participate in limiting the maximum axial length of the linear motor 100, so as to reduce the collision and damage between the push rod assembly 2 and the housing assembly 1, and play a role in limiting and protecting; the second buffer member 4 can participate in limiting the minimum axial length of the linear motor 100, and can also reduce collision and damage between the push rod assembly 2 and the shell assembly 1, so as to play a role in limiting and protecting. Alternatively, the first cushioning member 3 and the second cushioning member 4 are both rubber members.

Illustratively, the avoidance groove 21b includes a first groove portion 21c and a plurality of second groove portions 21d, the first groove portion 21c being disposed around the first guide rod 22, the plurality of second groove portions 21d being disposed at intervals along the circumferential direction of the first groove portion 21c, and a groove bottom wall of the first groove portion 21c and/or a groove bottom wall of the second groove portion 21d being provided with the first buffer member 3; as shown in fig. 1, the groove bottom wall of the first groove portion 21c is provided with a first buffer 3 provided around the first guide rod 22, and a second buffer 4 provided around the first guide rod 22 and axially spaced from the push rod 21.

In some embodiments, as shown in fig. 1-3, the linear motor 100 further includes a first bracket 5, a second bracket 6, and a damping spring 7, where the first bracket 5 is fixed to a portion of the first guide rod 22 extending out of the housing 11, the second bracket 6 is fixed to the housing 11, and the damping spring 7 is sleeved outside the second buffer member 4 and is stopped between the first bracket 5 and the second bracket 6. The front projection of the damping spring 7 at least partially overlaps with the front projection of the second buffer member 4 on a plane passing through the central axis L of the first guide rod 22, and the damping spring 7 is used to absorb the vibration transferred from the ground to the vehicle body when the vehicle 200 is traveling, ensuring good driving smoothness of the vehicle 200.

Of course, the position of the damping spring 7 is not limited to this, the position of the damping spring 7 in the axial direction may be specifically set according to actual requirements, for example, the axial direction of the first guide rod 22 is the up-down direction, and the damping spring 7 may be disposed at the upper portion, the middle portion, or the lower portion of the linear motor 100, so as to be convenient for adapting to requirements of different vehicle types; or the damper springs 7 are provided outside the linear motor 100 to be provided independently of the linear motor 100. Alternatively, the damper spring 7 is a coil spring, an air spring, or the like.

In some embodiments, as shown in fig. 1, 4, and 13-15, the first guiding structure 12 is one or more, and at least one of two ends of the housing 11 in the sliding direction is provided with the first guiding structure 12; and/or, as shown in fig. 16, the first guide structure 12 is provided in one or more, the first guide structure 12 is provided adjacent to one of both ends of the housing 11 in the sliding direction, at which time the first guide structure 12 may be provided in the housing 11, at which time the depth of the escape groove 21b may be appropriately increased.

Illustratively, as shown in fig. 4, the first guide structure 12 is one and provided at one of both ends of the housing 11 in the axial direction of the first guide rod 22; or two first guide structures 12 are arranged, and the two first guide structures 12 are respectively arranged at two ends of the shell 11 in the axial direction of the first guide rod 22; or as shown in fig. 16, the first guide structure 12 is one and is provided adjacent to one of both ends of the housing 11 in the axial direction of the first guide rod 22; or the first guide structure 12 is provided in two, one of which is provided adjacent to one end of the housing 11 in the axial direction of the first guide bar 22, and the other of which is provided adjacent to the other end of the housing 11 in the axial direction of the first guide bar 22; or the number of the first guide structures 12 is two, one of which is provided at one end of the housing 11 in the axial direction of the first guide bar 22, and the other of which is provided adjacent to the other end of the housing 11 in the axial direction of the first guide bar 22.

Of course, in other examples, the first guide structure 12 is provided in two, one of which is provided at one of the two ends of the housing 11 in the axial direction of the first guide rod 22, and the other of which is provided adjacent to the one end of the housing 11; or the first guide structure 12 is two and is provided adjacent to one of both ends of the housing 11 in the axial direction of the first guide bar 22.

It can be seen that, in the embodiment of the present application, the number of the first guiding structures 12, and the arrangement positions and arrangement manners of the first guiding structures relative to the housing 11 are flexible, so as to better adapt to the actual differentiated requirements.

In some embodiments, as shown in fig. 4 and 16, two ends of the housing 11 in the sliding direction are a first end 11a and a second end 11b, respectively, the first guide structure 12 is disposed at the first end 11a (as shown in fig. 4), or the first guide structure 12 is disposed adjacent to the first end 11a relative to the second end 11b (as shown in fig. 16), the housing assembly 1 further includes a second guide structure 14, the second guide structure 14 is disposed at the second end 11b, and the second guide structure 14 is slidably engaged with the push rod 21 along the axial direction of the first guide rod 22, and the second guide structure 14 is disposed at an axial interval from the first guide structure 12.

It should be appreciated that in the embodiment of the present application, the first guiding structure 12 is multiple, and/or the housing assembly 1 includes the first guiding structure 12 and the second guiding structure 14, so that the linear motor 100 can be positioned and guided secondarily, so that multiple positioning and guiding can be formed between the push rod assembly 2 and the housing assembly 1, so as to further improve the stability of the relative movement of the push rod assembly 2 and the housing assembly 1, and simultaneously facilitate ensuring a working air gap between the push rod assembly 2 and the housing assembly 1, especially a radial working air gap between the push rod assembly 2 and the housing assembly 1, so as to improve the stability and reliability of the linear motor 100.

In the embodiment of the present application, the first guiding structure 12 is disposed adjacent to one of two ends of the housing 11 in the axial direction, and at this time, the axial distance between the first guiding structure 12 and the one end of the housing 11 is smaller than the axial distance between the first guiding structure 12 and the other end of the housing 11, and the axial distance between the first guiding structure 12 and the one end of the housing 11 may be set according to practical requirements.

In some embodiments, the second guide structure 14 includes an end cap 141 and a second guide rod 142, the end cap 141 closing the second end 11b to promote dust-proof ability of the housing assembly 1, the second guide rod 142 being provided on a side of the end cap 141 facing the housing 11, and the second guide rod 142 being located within the housing 11. As shown in fig. 1-3, the push rod 21 is formed with a second guide hole 21a, and the second guide rod 142 is slidably fitted in the second guide hole 21a; and/or, the push rod 21 is formed with and dodges the space, dodges and is equipped with guide bearing in the space, and the second guide bar 142 wears to locate guide bearing and is suitable for holding in dodging the space, and second guide bar 142 and guide bearing cooperate in order to guide push rod assembly 2 for the direction of movement of casing assembly 1 this moment, dodges the week wall in space can need not to have the effect of guiding second guide bar 142, for example dodges the perisporium in space and the perisporium interval setting of second guide bar 142, certainly dodges the space also can with second guide bar 142 guide cooperation. Thus, the second guide structure 14 is simple in structure and easy to assemble.

It is understood that when the push rod 21 is formed with the second guide hole 21a and the escape space, at least part of the second guide hole 21a may be configured as the escape space.

In some embodiments, the housing 11 includes a barrel formed as a ring-shaped structure. In this regard, "annular" is to be understood in a broad sense, i.e., not limited to "annular" (as shown in fig. 1 and 4), but may also be "polygonal ring" (as shown in fig. 10), etc.

In some embodiments, as shown in fig. 1, 4 and 9, the end cap 141 and the housing 11 are separate pieces and are assembled and secured to facilitate assembly of the housing 11 and the push rod assembly 2; for example, the housing 11 has a first connection structure 11c, the end cap 141 has a second connection structure 141a, and the first connection structure 11c and the second connection structure 141a are fixed by a connection member such as a bolt or the like. The end cover 141 further has a third connection structure 141b, and the third connection structure 141b is used to connect with the swing arm when the linear motor 100 is used in the vehicle 200.

According to the vehicle 200 of the second aspect embodiment of the present utility model, as shown in fig. 17, the vehicle 200 includes the linear motor 100 according to the above-described first aspect embodiment of the present utility model. It will be appreciated that the vehicle 200 may also include a body and wheels, with one of the housing assembly 1 and the push rod assembly 2 being connected to the wheel and the other of the housing assembly 1 and the push rod assembly 2 being connected to the body. According to the vehicle 200 of the embodiment of the utility model, by adopting the linear motor 100, the running stability of the vehicle 200 is improved, and the control and the assembly are facilitated.

It should be noted that, the type of the vehicle 200 according to the embodiment of the application is not limited, for example, the vehicle 200 may be a fuel-oil vehicle, a gas-oil vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended range vehicle. Of course, the linear motor 100 of the embodiment of the present application can also be used in other devices requiring vibration damping, and is not limited to the vehicle 200.

Other constructions and operations of the vehicle 200 according to embodiments of the utility model are known to those of ordinary skill in the art and will not be described in detail herein.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (13)

1. A linear motor, comprising:

The shell assembly comprises a shell and a first guide structure, wherein the first guide structure is arranged on the shell, and is provided with a first guide hole and an avoidance hole;

The push rod assembly comprises a push rod and a first guide rod, the first guide rod is arranged on the push rod, the first guide rod penetrates through the first guide hole and is matched with the first guide hole in a sliding mode along the axial direction of the first guide rod, the push rod is suitable for penetrating through the avoidance hole, and an avoidance groove used for avoiding the first guide structure and suitable for being matched with the first guide structure to limit the displacement of the push rod assembly relative to the shell assembly is formed between the push rod and the first guide rod.

2. The linear motor of claim 1, wherein at least a portion of the pushrod is disposed within the housing, a portion of the pushrod being adapted to be exposed to the housing through the relief Kong Wai.

3. The linear motor of claim 2, wherein the housing assembly further comprises a first magnetic member disposed within the housing, the pushrod assembly further comprises a second magnetic member disposed within the pushrod, at least a portion of the second magnetic member disposed within the housing opposite the first magnetic member, a portion of the second magnetic member adapted to be exposed to the housing through the relief Kong Wai.

4. A linear motor according to claim 1, wherein,

The first guide rod is in limit fit with the first guide hole in the circumferential direction of the first guide rod; and/or the number of the groups of groups,

The push rod is suitable for being in limit fit with the avoidance hole in the circumferential direction of the first guide rod.

5. The linear motor of claim 4, wherein the linear motor is configured to control the motor to drive the motor to move,

The cross section of the first guide rod is non-circular, and the opening shape of the first guide hole is matched with the cross section of the first guide rod; and/or the number of the groups of groups,

The first guide structure comprises a guide ring and a plurality of connecting ribs, the guide ring is used for defining a first guide hole, the connecting ribs are arranged along the circumferential interval of the guide ring, each connecting rib is connected with the guide ring and the shell, the guide ring and two adjacent connecting ribs form an avoidance hole, the avoidance groove comprises a first groove part and a plurality of second groove parts, the first groove part surrounds the first guide rod, the second groove parts are arranged along the circumferential interval of the first groove part, each second groove part is communicated with the first groove part and penetrates through the peripheral wall of the push rod, the first groove part is used for avoiding the guide ring, and the second groove part is used for avoiding the connecting ribs and is suitable for being in circumferential limit fit with the connecting ribs.

6. The linear motor of claim 4, wherein the first guide structure comprises a guide ring and a plurality of connecting ribs, the guide ring defines the first guide hole, the plurality of connecting ribs are arranged at intervals along the circumferential direction of the guide ring, each connecting rib connects the guide ring and the housing, so that the avoidance hole is formed between the guide ring and two adjacent connecting ribs, and the length of the guide ring is greater than or equal to the maximum length of the connecting ribs in the axial direction of the first guide rod.

7. The linear motor of claim 1, wherein the engagement between the pushrod and the first guide structure satisfies at least one of the following conditions:

Condition A1: the hole wall of the first guide hole and/or the peripheral wall of the first guide rod are/is provided with a first sealing element, and the first sealing element is sealed between the first guide structure and the first guide rod;

Condition A2: the wall of the first guide hole and/or the peripheral wall of the first guide rod is/are provided with a first lubricating piece;

condition A3: the wall of the avoidance hole and/or the wall of the avoidance groove are provided with a second sealing piece, and the second sealing piece is suitable for sealing between the first guiding structure and the push rod;

Condition A4: and the wall of the avoidance hole and/or the wall of the avoidance groove is provided with a second lubricating piece.

8. The linear motor of claim 1, further comprising:

The first buffer piece is arranged on the bottom wall of the avoidance groove and is suitable for being matched with the first guide structure to limit the displacement of the push rod assembly relative to the shell assembly;

The second buffer piece is arranged on the first guide rod and is positioned outside the shell, and the second buffer piece is suitable for being matched with the first guide structure to limit the displacement of the push rod assembly relative to the shell assembly.

9. The linear motor of claim 8, wherein the linear motor further comprises:

the first support is fixed with the part of the first guide rod extending out of the shell;

The second bracket is fixed with the shell;

And the damping spring is sleeved outside the second buffer piece and is stopped between the first bracket and the second bracket.

10. The linear motor of any of claims 1-9, wherein the first guide structure is one or more,

At least one of the two ends of the shell in the sliding direction is provided with the first guide structure; and/or the number of the groups of groups,

The first guide structure is disposed adjacent to one of both ends of the housing in the slip direction.

11. The linear motor of any one of claims 1-9, wherein the housing has first and second ends, respectively, at both ends in a slip direction, the first guide structure being provided at the first end, or the first guide structure being provided adjacent to the first end with respect to the second end, the housing assembly further comprising:

The second guide structure is arranged at the second end and is matched with the push rod in a sliding way along the axial direction of the first guide rod.

12. The linear motor of claim 11, wherein the second guide structure comprises an end cap closing the second end and a second guide rod disposed on a side of the end cap facing the housing and within the housing,

The push rod is provided with a second guide hole, and the second guide rod is in sliding fit with the second guide hole; and/or the number of the groups of groups,

The push rod is formed with dodges the space, dodge and be equipped with guide bearing in the space, the second guide bar wears to locate guide bearing just be suitable for hold in dodge the space.

13. A vehicle characterized by comprising a linear motor according to any one of claims 1-12.