Permanent magnet synchronous motor with protection function

Abstract

The utility model belongs to the technical field of permanent magnet synchronous motors, and particularly relates to a permanent magnet synchronous motor with a protection function, which comprises a motor body and a wire holder arranged on the motor body, a box cover is sleeved outside the wire holder of a haloxylon ammodendron tree, a movably connected protection cover is arranged outside the box cover, a wiring hole is arranged on the motor body, and the wiring hole is connected with the wire holder of the haloxylon ammodendron tree. A pressing plate is rotationally installed outside the wire holder through a reset torsion spring, an anti-skid pad is arranged on the inner side of the pressing plate, and a positioning table is fixed to the outer side of the wire holder. Firstly, the wire clamping component linked with the box cover in an assembly and disassembly manner is arranged on the wire holder, the wire clamping component can realize quick wire connection after the box cover is disassembled, the wire clamping component can automatically clamp an external wire after the box cover is installed, the protection effect of a wire connection part is improved while wire connection is facilitated, and secondly, the protection cover arranged on the box cover can absorb external impact, so that the protection effect of the wire connection part is improved. And the junction box can be conveniently replaced after being damaged, so that an effect of protecting the junction box is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of permanent magnet synchronous motors, in particular to a permanent magnet synchronous motor with a self-protection function. Background Art

[0002] Permanent magnet synchronous motors use permanent magnets to provide excitation, making the motor structure simpler, reducing processing and assembly costs, and eliminating collector rings and brushes that are prone to problems, improving the reliability of motor operation; because no excitation current is required, there is no excitation loss, which improves the efficiency and power density of the motor; the motor junction box is one of the motor accessories, mainly used to protect the motor terminals and facilitate connection. The motor junction box is generally composed of a box cover, a box body, terminal blocks, diodes, connecting wires, and connectors. The motor junction box should have a waterproof sealing design, scientific anti-electric shock insulation protection and other properties;

[0003] The box part of the existing motor junction box is divided into a terminal block and a box cover. The terminal block is used for wiring, and the box cover is used for protection. Since the box cover is relatively thin, has limited pressure resistance, and does not have a buffer protection function, it is easy to cause the box cover to be damaged or cracked by external impact during use; at the same time, the power connection of the junction box needs to be externally connected, and the external wire is generally connected to the inside of the junction box through a copper nose. When the external wire is subjected to tension, it is easy to directly cause the copper nose to fall off, affecting the operation of the motor;

[0004] In order to solve the above problems, the present application proposes a permanent magnet synchronous motor with a built-in protection function. Utility Model Content

[0005] The purpose of the utility model is to provide a permanent magnet synchronous motor with a self-protection function, which solves the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

[0007] The utility model is a permanent magnet synchronous motor with a built-in protection function, comprising a motor body and a terminal block installed on the motor body, a box cover is provided on the outside of the Haloxylon ammodendron terminal block, a movably connected protective cover is provided on the outside of the box cover, a wiring hole is opened on the motor body, a clamping plate is rotatably installed on the outside of the terminal block through a reset torsion spring, an anti-slip pad is provided on the inner side of the clamping plate, a positioning platform is fixed on the outer side of the terminal block, an inward groove is formed on the box cover, an energy-absorbing spring is provided between the groove and the protective cover, the protective cover is elastically connected to the box cover through the groove, and the two are also detachable.

[0008] Furthermore, the wiring seat is provided with an escape space for the clamping plate to rotate and fit outside the wiring seat, and after the box cover is fitted with the wiring seat, the clamping plate is squeezed to fit the wiring seat.

[0009] Furthermore, the positioning platform is located at the fitting position of the clamping plate and the wiring seat. After the clamping plate and the wiring seat are fitted, a space for the wire to pass through is formed. At the same time, a clamping space for the wire is formed between the positioning platform and the anti-slip pad.

[0010] Furthermore, the box cover is provided with a wire passage slot which communicates with the wire passing space formed by the clamping plate and the wiring seat.

[0011] Furthermore, a positioning pin is fixedly provided on the sink groove, a positioning spring is fixedly provided on the inner bottom of the protective cover, the energy absorbing spring is clamped on the inner side of the protective cover through the positioning spring, and the energy absorbing spring is positioned on the sink groove through the positioning pin.

[0012] Furthermore, a connecting rod is fixed to the inner bottom of the protective cover, the lower end of the connecting rod is a threaded section, and the threaded section of the connecting rod is provided with a nut.

[0013] Furthermore, a through hole for a connecting rod to pass through is provided on the box cover, and the connecting rod passes through the box cover and is connected to a nut.

[0014] The utility model has the following beneficial effects:

[0015] The utility model provides a pressing plate, an anti-skid pad, and a positioning platform and cooperates with the installation and removal of the box cover. When the box cover is opened, the wiring hole and the pressing plate are in an open state. At this time, the wire can be directly passed through the wiring hole to connect with the wiring seat, which is convenient for the installation and removal of the wire. At the same time, after the box cover is installed, a squeezing force can be formed between the pressing plate and the positioning platform, squeezing the wire between the positioning platform and the anti-skid pad, thereby increasing the tensile strength and the protective effect.

[0016] The utility model forms protection above the box cover through the protective cover and the sink groove, which can buffer a certain external impact. At the same time, after the protective cover is damaged, it can be quickly replaced through the positioning spring piece and the connecting rod, thereby improving the motor protection effect. At the same time, it also has the advantage of convenient operation.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 This is a schematic diagram of the overall appearance structure of the utility model;

[0020] Figure 2 for Figure 1 Schematic diagram of the structure after the middle box cover is disassembled;

[0021] Figure 3 for Figure 2 A schematic diagram of the structure viewed from the side;

[0022] Figure 4 This is a schematic diagram of the structure of a junction box in the utility model in a half-section view from the front;

[0023] Figure 5 This is a schematic diagram of the structure of a junction box in the utility model in a half-section side view;

[0024] Figure 6 It is a schematic diagram of the structure of the partially exploded and cutaway portion of the connection between the box cover and the protective cover of the utility model;

[0025] Figure 7 for Figure 3 The enlarged structural diagram of part A in the middle;

[0026] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0027] In the figure: 1. Motor body; 2. Terminal block; 3. Box cover; 4. Protective cover; 5. Wiring hole; 6. Clamping plate; 7. Anti-slip pad; 8. Positioning table; 9. Wire groove; 10. Sink; 11. Energy absorbing spring; 12. Positioning pin; 13. Positioning spring; 14. Connecting rod; 15. Nut. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] In the description of the present invention, it should be understood that terms such as "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0030] See also Figure 1-7As shown, the utility model is a permanent magnet synchronous motor with built-in protection function, including a motor body 1 and a terminal block 2 installed on the motor body 1, a box cover 3 is provided on the outside of the terminal block 2, a movably connected protective cover 4 is provided on the outside of the box cover 3, a wiring hole 5 is opened on the motor body 1, a clamping plate 6 is installed on the outside of the terminal block 2 through a reset torsion spring, an anti-slip pad 7 is provided on the inner side of the clamping plate 6, a positioning platform 8 is fixed on the outer side of the terminal block 2, the wire clamping component can quickly connect wires after the box cover 3 is removed, and the wire clamping component can automatically clamp the external wires after the box cover 3 is installed, so as to facilitate wiring and improve the protection effect of the wiring part, an inward groove 10 is formed on the box cover 3, an energy absorption spring 11 is provided between the groove 10 and the protective cover 4, the protective cover 4 is elastically connected to the box cover 3 through the groove 10, and the two are also detachable, the protective cover 4 can absorb external impact, reduce the impact on the terminal box, and can be easily replaced after damage, thereby protecting the terminal box.

[0031] Among them, the terminal block 2 is provided with an avoidance space for the clamping plate 6 to rotate and fit against the outside of the terminal block 2. After the box cover 3 is fitted with the terminal block 2, the clamping plate 6 is squeezed to fit against the terminal block 2. In this embodiment, the avoidance space on the terminal block 2 gives the clamping plate 6 space for the clamping state, and at the same time, the clamping of the clamping plate 6 and the installation of the box cover 3 can be achieved and locked at the same time. The rotation of the clamping plate 6 and the box cover 3 facilitates wiring and reliably clamps the wires, and at the same time does not affect the normal installation and stability of the box cover 3.

[0032] Among them, the positioning platform 8 is located at the fitting position of the clamping plate 6 and the terminal block 2. After the clamping plate 6 and the terminal block 2 are fitted, a space for the wire to pass through is formed. At the same time, a clamping space for the wire is formed between the positioning platform 8 and the anti-slip pad 7. This wiring clamping method in this embodiment has the advantages of simple structure, convenient operation and high reliability.

[0033] Among them, the box cover 3 is provided with a wire groove 9 which is interconnected with the wire passing space formed by the clamping plate 6 and the terminal block 2. In this embodiment, the wire groove 9 and the wire passing space between the clamping plate 6 and the terminal block 2 play a wire arrangement role synchronously to ensure the connection between the motor external wiring and the terminal box.

[0034] Among them, a positioning pin 12 is fixedly provided on the sink 10, and a positioning spring 13 is fixedly provided on the inner bottom of the protective cover 4. The energy absorption spring 11 is clamped on the inner side of the protective cover 4 through the positioning spring 13, and the energy absorption spring 11 is positioned on the sink 10 through the positioning pin 12. In this embodiment, the positioning spring 13 is used for the quick connection between the sink 10 and the protective cover 4, and can also be quickly removed. The positioning pin 12 ensures the convenience and reliability of the connection between the lower end of the sink 10 and the box cover 3.

[0035] Among them, a connecting rod 14 is fixed to the bottom inner side of the protective cover 4, the lower end of the connecting rod 14 is a threaded section, the threaded section of the connecting rod 14 is provided with a nut 15, and a through hole for the connecting rod 14 to pass through is opened on the box cover 3. The connecting rod 14 passes through the box cover 3 and is connected to the nut 15. The structure of this connection method in this embodiment is simple, and it can ensure the connection reliability and flexibility between the terminal block 2 and the box cover 3.

[0036] It can be understood that, first, a wire clamping component is provided on the terminal block 2, which is linked to the installation and removal of the box cover 3. The wire clamping component can quickly connect wires after the box cover 3 is removed. After the box cover 3 is installed, the wire clamping component can automatically clamp the external wires, which facilitates wiring and improves the protection effect of the wiring part. Secondly, the protective cover 4 provided on the box cover 3 can absorb external impacts, reduce the impact on the terminal box, and can be easily replaced after damage, thereby protecting the terminal box.

[0037] A specific application of this embodiment is: the clamping plate 6 is installed on the wiring seat 2 through a reset torsion spring, and a limiter is provided between the two to limit the vertical opening of the clamping plate 6, and the limiter limits the clamping plate 6 to rotate 90 degrees;

[0038] When wiring: remove the bolts connecting the box cover 3 and the terminal block 2, and remove the box cover 3 from above the terminal block 2. When the box cover 3 is removed, the clamping plate 6 is not restricted by the box cover 3 and is driven by the reset torsion spring to open in front of the wiring hole 5. Figure 7 In the state shown, the external wire directly passes through the wiring hole 5 and is connected to the wiring on the wiring seat 2. The wire position is adjusted to correspond to the positioning platform 8, and then the box cover 3 is installed downward from the top of the wiring seat 2. The bottom of the box cover 3 presses the clamping plate 6 downward, causing the clamping plate 6 to rotate downward. At this time, the reset torsion spring is squeezed, and the wire is bent following the downward pressure of the clamping plate 6. After the box cover 3 is completely inserted into the wiring seat 2, the wire is clamped between the positioning platform 8 and the anti-slip pad 7, and the wire is still in the wire groove 9. Then the wiring seat 2 and the box cover 3 are fixed by bolts;

[0039] When the protective cover 4 is subjected to external impact, the energy absorption spring 11 will be compressed, and the connecting rod 14 will move downward in the box cover 3 to buffer the impact. When the protective cover 4 is damaged, the box cover 3 is removed from the terminal block 2, the nut 15 is removed from the inside of the box cover 3, and then the protective cover 4 is taken out from the top of the box cover 3. The sink 10 will be taken out synchronously with the protective cover 4 due to the existence of the energy absorption spring 11. The lower end of the protective cover 4 is separated from the sink 10 and the positioning pin 12, and the sink 10 is removed from the positioning spring piece 13 on the inside of the damaged protective cover 4. The protective cover 4 is replaced, and the sink 10 is installed in the new box cover 3 through the positioning spring piece 13. After the connecting rod 14 is inserted into the box cover 3, the sink 10 is positioned by the positioning pin 12 and contacts the sink 10, and the nut 15 is screwed on the connecting rod 14 on the inside of the box cover 3 in turn to complete the replacement of the protective cover 4.

[0040] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0041] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A permanent magnet synchronous motor with a self-protection function, comprising a motor body (1) and a terminal block (2) mounted on the motor body (1), wherein a box cover (3) is provided outside the Haloxylon ammodendron terminal block (2), and characterized in that: The box cover (3) is provided with a protective cover (4) with a movable connection on the outside, the motor body (1) is provided with a wiring hole (5), the wiring seat (2) is provided with a clamping plate (6) on the outside thereof by means of a return torsion spring, an anti-slip pad (7) is provided on the inside of the clamping plate (6), a positioning platform (8) is fixed on the outside of the wiring seat (2), an inwardly-pointing groove (10) is formed on the box cover (3), an energy-absorbing spring (11) is provided between the groove (10) and the protective cover (4), the protective cover (4) is elastically connected to the box cover (3) through the groove (10), and the two are also detachable.

2. A permanent magnet synchronous motor with a self-protection function according to claim 1, characterized in that: The wiring base (2) is provided with an escape space for the clamping plate (6) to rotate and fit onto the outside of the wiring base (2); after the box cover (3) and the wiring base (2) are fitted together, the clamping plate (6) is pressed to fit onto the wiring base (2).

3. A permanent magnet synchronous motor with self-protection function according to claim 2, characterized in that: The positioning platform (8) is located at the fitting position of the clamping plate (6) and the wiring seat (2). After the clamping plate (6) and the wiring seat (2) are fitted together, a space is formed which is conducive to the passage of the wire. At the same time, a clamping space for the wire is formed between the positioning platform (8) and the anti-slip pad (7).

4. A permanent magnet synchronous motor with self-protection function according to claim 3, characterized in that: The box cover (3) is provided with a wire passage slot (9) which is interconnected with the wire passing space formed by the pressing plate (6) and the wiring seat (2).

5. The permanent magnet synchronous motor with self-protection function according to claim 1, characterized in that: A positioning pin (12) is fixedly provided on the sink groove (10), a positioning spring piece (13) is fixedly provided on the inner bottom of the protective cover (4), the energy absorption spring (11) is clamped on the inner side of the protective cover (4) through the positioning spring piece (13), and the energy absorption spring (11) is positioned on the sink groove (10) through the positioning pin (12).

6. A permanent magnet synchronous motor with a self-protection function according to claim 1, characterized in that: A connecting rod (14) is fixed to the inner bottom of the protective cover (4), the lower end of the connecting rod (14) is a threaded section, and the threaded section of the connecting rod (14) is provided with a nut (15).

7. A permanent magnet synchronous motor with self-protection function according to claim 6, characterized in that: The box cover (3) is provided with a through hole for the connecting rod (14) to pass through, and the connecting rod (14) passes through the box cover (3) and is connected to the nut (15).

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