Linear motor for sliding door

The invention relates to a linear motor for a sliding door, comprising a mover assembly, a stator assembly and a controller for controlling the mover assembly to move, the stator assembly is electrically connected with the controller, and comprises two or more stators; the controller is arranged between the two adjacent stators; and end parts of the stators on two sides of the controller are provided with Hall devices. The mover assembly can move on a left side and a right side of the controller, and the moving range is increased. Furthermore, the Hall devices are arranged at the end parts of the stators on the two sides of the controller, the moving range of the mover assembly to the left side and the right side can be further increased, so that the system can adapt to a wider door opening without changing the length of the stator assembly.

FIELD OF THE INVENTION

The present invention relates to a stator assembly, in particular to a linear motor for a sliding door.

BACKGROUND OF THE INVENTION

Traditional linear devices or systems adopt rotary motors, and intermediate conversion devices (such as chains, wire ropes, transmission belts, racks or screw rods) are needed to convert rotary motion into linear motion. Since the devices or systems are provided with intermediate conversion devices, the entire drive system has disadvantages such as large size, low efficiency and difficult maintenance. At present, electric doors on the market are generally driven by rotating stator assembly, and are pulled by gears and racks, or worm gears and worms, or sprocket wheels and chains, or friction clutches or wire ropes. During the transmission, a process of converting rotary motion into linear motion exists, the structure is complex, and abrasion and failures are liable to occur. The patent CN2844362Y discloses a linear motor-driven automatic door, a linear motor is used as a driving mechanism which directly generates linear motion without an intermediate conversion transmission device, thus, the system structure is simpler, and noise, abrasion and the like caused by mechanical transmission can be avoided. The linear motor-driven automatic door has obvious progress compared with an ordinary traditional automatic door, but there is still room for improvement. In the above patent, Hall sensors are arranged only at one end of the iron-core coil assembly, the distance between the Hall sensors is only 0.5 time the length of the iron-core coil. The patent has the defect that once the length of the iron-core coil is determined, the positions of the Hall sensors are also determined. In this way, the system can only be installed in a door opening with a specific width. That is, the system needs to be customized according to the width of the door opening in actual use, thus being inapplicable to multiple door opening widths. In actual use, door openings are various in width, if the system must be customized specifically for each width, the cost would be greatly increased, and mass production and application cannot be achieved. Therefore, it is particularly necessary to develop a linear motor system capable of adapting to various door opening widths.

SUMMARY OF INVENTION

The present invention aims to overcome the defects in the prior art, and provide a linear motor for a sliding door. The linear motor is novel in design, reasonable in structure and applicable to various door opening widths.

In order to solve the above technical problems, a technical solution provided by the present invention is as follows:

a linear motor for a sliding door comprises a mover assembly, a stator assembly and a controller for controlling the mover assembly to move; the stator assembly is electrically connected with the controller; the stator assembly comprises two or more stators; and the controller is arranged between two adjacent stators; and end parts of the stators on two sides of the controller are provided with Hall devices.

Further, the Hall devices are arranged at ends, away from the controller, of the stators.

Further, the Hall devices are arranged at two ends of the controller respectively.

The Hall devices arranged at the two ends of the controller are combined with the Hall devices arranged at the ends of the stators to form a detection mechanism for detecting the displacement of the mover assembly, so that a more accurate detection effect can be achieved, and the movement of the mover assembly can be conveniently and precisely controlled by the controller.

Further, the stators and the controller are independent components, and pluggable terminals are arranged at two ends of the stators and the controller respectively, and the stators and the controller are electrically connected through the pluggable terminals.

Further, a first pluggable terminal is arranged at two ends of the controller respectively, a second pluggable terminal is arranged at one end of the stators, and the first pluggable terminal is directly connected with the second pluggable terminal.

Further, the first pluggable terminal is provided with a first connecting part and a second connecting part, the first connecting part is provided with a first jack array, the second connecting part is provided with a terminal housing, the terminal housing is internally provided with an accommodating through-hole, an convex insertion block is arranged on part, close to an outer side, of the terminal housing, and the accommodating through-hole allows the jack array to pass through; and the second pluggable terminal is provided with a plug array matched with the jack array, and a slot matched with the insertion block.

Further, a hook is arranged above the jack array, and a clamping slot is formed in part, close to an outer side, of upper end of the terminal housing in a downward recessing manner, and an elastic clamping member is arranged at upper end of the second pluggable terminal; a bottom slot is formed in bottom of the elastic clamping member in an inward recessing manner; and the hook is clamped to the bottom slot of the elastic clamping member in the clamping slot after passing through the terminal housing.

Further, the linear motor for the sliding door also comprises a power supply and/or a reserved junction box, the power supply and/or the reserved junction box are/is independent components, and pluggable terminals are arranged at two ends of the power supply and/or the reserved junction box.

Further, the pluggable terminals of the power supply are electrically connected with the stators or the controller through wires with plugs, and/or the pluggable terminals of the reserved junction box are electrically connected with the stators or the controller through wires with plugs.

Further, the sliding door is provided with a section bar, the section bar is internally divided into two parts in a vertical direction, and the stator assembly, the controller, the reserved junction box and the power supply which are connected end to end are installed inside one part of the section bar.

Further, the mover assembly is provided with a wheel set and installed inside the other part of the section bar, and is opposite to the stator assembly vertically, and the mover assembly slides in the section bar through the wheel set.

Further, both left and right sides of the mover assembly is provided with wheel sets, and the section bar is internally provided with ribs matched with the wheel set.

The linear motor for the sliding door has the beneficial effects as follows:

By arranging the controller between the two adjacent stators, the mover assembly can move on both left and right sides of the controller, so that the moving range of the mover assembly is increased. Further, the Hall devices are arranged at the end parts of the stators on the two sides of the controller, when the mover assembly moves rightwards, the left end of the mover assembly can move farthest to the corresponding position of the Hall device on the stator on the right side of the controller; and similarly, when the mover assembly moves leftwards, the right end of the mover assembly can move farthest to the corresponding position of the Hall device on the stator on the left side of the controller. In other words, by arranging the Hall devices at the end parts of the stators on the two sides of the controller, the leftward and rightward moving range of the mover assembly can be further increased, thus, a linear motor system is also applicable to a wider door opening without changing the length of the stator assembly. The adaptability of the linear motor system is greatly enhanced. In this way, in actual use, it is not necessary to customize and develop a system for each door opening width, large-scale production can be achieved, and the cost is significantly reduced.

DESCRIPTION OF REFERENCE NUMERALS

upper door frame1

slide door frame6

reserved junction box16

DETAILED DESCRIPTION OF THE ILLUSTRATED EMBODIMENTS

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of the present invention.

It should be noted that directional indicators (such as up, down, left, right, front, back, outside and inside) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of components in a specific status (as shown in the accompanying drawings), and if the specific status changes, the directional indication changes accordingly.

A linear motor for a sliding door, as shown inFIGS. 1 to 3, comprises a mover assembly4, a stator assembly and a controller11, wherein the controller11is used for controlling a driving force between the stator assembly and the mover assembly4of the linear motor. The stator assembly comprise two or more stators12, the controller11is arranged between the two adjacent stators12, and end parts of the stators12on two sides of the controller11are provided with Hall devices. By arranging the controller11between the two adjacent stators12, the mover assembly4can move on both left and right sides of the controller11, and the moving range of the mover assembly4is increased.

Further, the Hall devices are arranged at the end parts of the stators12on the two sides of the controller11, and the Hall devices are arranged at ends, away from the controller11, of the stator12. In this way, when the mover assembly4moves rightwards, the left end of the mover assembly4can move farthest to the corresponding position of the Hall device H4on the stator12on the right side of the controller11; similarly, when the mover assembly4moves leftwards, the right end of the mover assembly4can move farthest to the corresponding position of the Hall device H1on the stator12on the left side of the controller11. In other words, by arranging the Hall devices at the end parts of the stators12on the two sides of the controller11, the moving range of the mover assembly4to the left and right sides can be further increased, so that a linear motor system is also applicable to a wider door opening without changing the length of the stator assembly, and the adaptability of the system is greatly improved. In this way, in actual use, it is not necessary to customize and develop a system for each door opening width, large-scale production can be achieved, and the cost is significantly reduced. Furthermore, Hall devices H2and H3are also arranged at the two ends of the controller11respectively, the Hall devices on the controller11and the Hall devices on the stators12are combined to form a displacement detection mechanism for the mover assembly4, so that the position of the mover assembly4can be accurately detected.

Preferably, in order to realize pluggable connection of the controller11and other components, the two ends of the controller11are provided with a first pluggable terminal respectively, one end of the stators is provided with a second pluggable terminal, and the first pluggable terminal is directly connected with the second pluggable terminal. By adopting a direct connection manner, there is no connecting wire between the controller11and the stators12, so that the structure is simpler, and the controller11and the stators12can be installed inside a section bar3conveniently. In another embodiment, a wire is also implementable for the pluggable connection between the first pluggable terminal and the second pluggable terminal, and a connecting wire is added between the controller11and the stator assembly.

Preferred structures of the first pluggable terminal and the second pluggable terminal are described below. The first pluggable terminal is provided with a first connecting part111and a second connecting part112, as shown inFIGS. 4 to 11. The second pluggable terminal is provided with a third connecting part121and a fourth connecting part122. The first connecting part111is provided with a jack array1112, the second connecting part112is provided with a terminal housing113, the terminal housing113is internally provided with an accommodating through-hole1123, a convex insertion block1121is arranged at part, close to an outer side, of the terminal housing113, and the accommodating through-hole1123allows the jack array1112to pass through; the third connecting part121is provided with a plug array1212matched with the jack array1112, and the fourth connecting part122is provided with a slot1221matched with the insertion block1121. That is, the first connecting part111is electrically connected with the third connecting part121, the second connecting part112is physically connected with the fourth connecting part122. The first pluggable terminal and the second pluggable terminal can be detachable, so it is more convenient to assemble the controller11, and also more convenient for disassembly and check during maintenance.

In the present embodiment, as shown inFIG. 5, the fourth connecting part122is divided into an upper part122B and a lower part122A, after the upper part122B and the lower part122A are buckled, a space for the third connecting part121to pass through is formed in the middle, and the third connecting part121is fixed in the space.

Further, as shown inFIGS. 8-10, a hook1111is arranged above the jack array1112, a clamping slot1122is formed in part, close to an outer side, of the upper end of the terminal housing113in a downward recessing manner, an elastic clamping member1211is arranged at the upper end of the plug array1212, a bottom slot (not shown) is formed in the bottom of the elastic clamping member1211in an inward recessing manner, and the hook1111is clamped to the bottom slot of the elastic clamping member1211in the clamping slot1122after passing through the terminal housing113. Through a cooperative clamping manner of the hook1111, the clamping slot1122and the bottom slot, the first connecting part111, the second connecting part112and the third connecting part121are effectively, physically and reliably connected.

Further, as shown inFIGS. 10-11, a pressing part1213is arranged on the upper end of the clamping members1211. Through the design of the pressing part1213, the controller11and the stators12can be conveniently separated. InFIG. 12, the upper end of the fourth connecting part122are recessed to form a recess1222for at least partially accommodating the elastic clamping member1211. The elastic clamping member1211is hidden in the recess1222, so that the controller11and the stator assembly are on the same plane after being connected, the elastic clamping member1211does not protrude to avoid affecting an overall appearance.

Further, in the present embodiment, a multi-segment structure further comprises a power supply14and a reserved junction box16. The power supply14and the reserved junction box16are also independent components, and pluggable terminals are arranged at two ends of the power supply14and the reserved junction box16respectively. The power supply14and the reserved junction box16adopt independent components, and form a multi-segment structure together with the controller11and the stator assembly, so that the structure of the linear motor for the sliding door is further simplified. In the embodiment, as shown inFIG. 1, the pluggable terminal of the power supply14is electrically connected with the corresponding stator12through a two-position to four-position terminal wire13, and the pluggable terminal of the reserved junction box16is electrically connected with the corresponding stator12through a four-position terminal connecting wire15. In addition, the pluggable terminal of the power supply14can also be directly connected with the corresponding stator12, and the pluggable terminal of the reserved junction box16can also be directly and electrically connected with the corresponding stator12. End parts of the power supply14and the reserved junction box16are in pluggable connection with other components through the pluggable terminals. Wires with plugs or direct connection may be adopted for achieving the pluggable connection manner to form a multi-segment structure comprising the power supply14and/or the reserved junction box16, the controller11and the stators12.

Specifically, as shown inFIG. 5, the pluggable terminal, connected with the reserved junction box16, of the stator12is provided with a fourth connecting part122and a socket124. Similarly, the fourth connecting part122is divided into an upper part122B and a lower part122A, a middle space formed after buckling the upper part122B and the lower part122A is used for fixing the socket124, and a plug of the four-position terminal connecting wire15is connected with the socket124.

In the present embodiment, wires in the stator12are encapsulated in the third connecting part121and the socket124at the two ends of the stator12, so that the overall sealing of the stators is good.

In addition, a pluggable terminal on an outer side of the power supply14is in pluggable connection with an external power line. In the present invention, power supply and wiring of the entire linear motor are achieved just by connecting the pluggable terminal on the outer side of the power supply14with the external power line, and installation is extremely convenient since there is only one external interface.

The sliding door is provided with a section bar3, the section bar3is internally divided into two parts in a vertical direction, and the stator assembly, the controller, the reserved junction box and the power supply which are connected end to end are installed inside a part of the section bar3.

In a preferred embodiment, a relative installation relationship between the upper component2and the mover assembly4is further described. When the linear motor is installed on a door body5, the upper component2is of an integral strip shape formed by connecting the power supply14, the two-position to four-position terminal wire13, the left stator12, the controller11, the right stator12, the four-position terminal connecting wire15and the reserved junction box16end to end, which is relatively fixed in upper space of the section bar3. The mover assembly4is provided with a long-strip-shaped housing and internally provided with a magnet bar. Wheels are arranged on two sides outside the housings of the mover assembly4to form a wheel set18. Multiple wheel sets may be arranged at a certain interval in a length direction of the housing of the mover assembly4. In the present embodiment, the wheel set18adopts concave wheels. The mover assembly4is inserted into lower space of the section bar3together with the wheel set18from the end part of the section bar3and is opposite to the upper component2vertically, as shown inFIG. 12. Four ribs17are arranged in the lower space of the section bar3, wherein the ribs17on left and right sides of the bottom of the lower space are formed by bending the bottom edge of the section bar3inwards, and the bending direction is vertically upward. The protruding direction of the ribs17located in the middle of the section bar3is opposite to that of the ribs17in the bottom. Therefore, the four ribs are matched with the grooves of the concave wheels, so that the mover assembly4slides in the section bar3through the wheel set18.

The mover assembly4is connected with the door body5of the sliding door, and the above structure can drive the door body5to smoothly move left and right.

The wheel set18can also adopt flat wheels, and the flat wheels abut against the ribs17, which can achieve the sliding of the mover assembly4.

Although the present invention has been described above with reference to some embodiments, various improvements can be made thereto and the components therein can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there are no structural conflicts, the features in the various embodiments disclosed in the present invention can be combined with each other in any way for use, but for the sake of saving space and resources, the cases of the combinations are not exhaustively described in the specification. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes technical solutions falling within the scope of the claims.