Motor output structure and motor

Abstract

The present invention discloses a motor output structure and a motor, which relates to the field of motor technology and includes: a junction box; three groups of electric contact connection mechanisms, wherein the electric contact connection mechanisms include a first terminal and a second terminal symmetrically arranged on the inner wall of the junction box, and the second terminal is electrically connected to an external power supply line, and an annular elastic member installed on the inner wall of the junction box is provided between the first terminal and the second terminal, and the annular elastic member has a compression widening characteristic; a connecting frame, wherein the connecting frame is installed on the side of the annular elastic member in the three groups of electric contact connection mechanisms away from the inner wall of the junction box. When the temperature in the junction box reaches a set threshold, the present invention will cancel the external force squeezing the annular elastic member under the deformation and contraction of the liquid crystal elastic strip, and the annular elastic member will recover due to its own elasticity, and the two ends will be separated from the first terminal and the second terminal to achieve power off, thereby ensuring the safe use of the motor.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to a motor output wire structure and a motor. Background Art

[0002] The motor's lead structure refers to the arrangement of wires and related components used to connect the motor windings to the external circuit. Its primary function is to transmit the electrical energy generated within the motor to the external circuit, ensuring proper motor operation. The motor lead structure typically includes a junction box and a terminal block. The junction box is located outside the motor casing and is fixed to the motor housing. The motor housing is provided with a wire hole. The lead wires from the wound stator extend through the hole, enter the junction box, and are then secured to the terminal block.

[0003] Existing motors are prone to abnormalities after long-term operation. For example, long-term overload operation may cause abnormal temperature rise, which in turn causes motor damage and requires replacement of the motor, resulting in increased costs. Summary of the Invention

[0004] The purpose of the present invention is to provide a motor output structure and a motor, which solves the problem that some motors are prone to abnormalities after long-term operation, such as long-term overload operation causing abnormal temperature increase, which in turn causes motor damage and the need to replace the motor, resulting in increased costs.

[0005] The present invention solves the above-mentioned technical problems through the following technical solutions, which include:

[0006] Junction box;

[0007] Three sets of electric contact connection mechanisms, each comprising a first terminal and a second terminal symmetrically arranged on the inner wall of the junction box, wherein the second terminal is electrically connected to an external power supply line, and an annular elastic member mounted on the inner wall of the junction box is provided between the first terminal and the second terminal, wherein the annular elastic member has a compression-widening characteristic;

[0008] A connecting frame, the connecting frame being mounted on a side of the annular elastic member in the three sets of electric contact connection mechanisms away from the inner wall of the junction box;

[0009] Two sets of limiting mechanisms are respectively arranged on the inner walls of the junction box at both ends of the connecting frame, which are used to softly fix the connecting frame. The annular elastic member will be compressed and widened, and the two ends will be electrically connected to the first terminal and the second terminal respectively to achieve power supply; when the set temperature is reached in the junction box, the limiting mechanism will loosen the connecting frame, and the annular elastic member will be disconnected from the first terminal and the second terminal due to its own elastic recovery to achieve power off.

[0010] Preferably, the annular elastic member includes a conductive portion and an insulating portion forming an annular structure, and the conductive portion is mounted on the inner wall of the junction box, and both ends of the conductive portion have contact surfaces;

[0011] The first connecting terminal and the second connecting terminal both have a protrusion inclined toward one side of the annular elastic member, and the end of the protrusion is adapted to the contact surface.

[0012] Preferably, the connecting frame includes three connecting rods fixed at the middle positions of the three insulating parts respectively, and the three connecting rods are commonly fixed with a connecting transverse plate, and round rods are fixed at both ends of the connecting transverse plate, and the round rods are used to connect with the limiting mechanism.

[0013] Preferably, the limiting mechanism includes an elastic card block and a support member acting on the elastic card block, the elastic card block is used to engage with the round rod, and a mounting plate is rotatably mounted on the side of the elastic card block close to the inner wall of the junction box, and a first telescopic rod and a liquid crystal elastic strip are installed between the mounting plate and the inner wall of the junction box;

[0014] The elastic clamping block is in a U-shaped structure as a whole, and a concave inner cavity adapted to the round rod is formed inside the elastic clamping block, and elastic parts are formed at both ends of the opening of the elastic clamping block.

[0015] Preferably, the support member includes two support plates fixed to the inner wall of the junction box, the two support plates are respectively located on both sides of the elastic card block, and a sliding rod is slidably installed on the two support plates, and the sliding direction of the sliding rod is the direction of the connection line of the two support plates. A clamping block is fixed on one side of the two support plates close to the elastic card block, and a spring is provided between the clamping block and the support plate. The two clamping blocks give the elastic card block a clamping force under the action of the spring to achieve clamping of the round rod. When the elastic card block is separated from the clamping block due to the pulling force of the liquid crystal elastic strip, the elastic card block will loosen the round rod.

[0016] Preferably, the junction box includes a box body and a cover plate softly fixed to the box body;

[0017] A frame-shaped magnetic block is fixed to the port of the box body, the cover plate is fixed to the frame-shaped magnetic block by magnetic attraction, and a frame that matches the frame-shaped magnetic block is fixed to the outer side of the cover plate.

[0018] Preferably, a heat sink is provided on the cover plate, and the heat sink includes a ventilation hole opened on the cover plate and a mounting base fixed to the connecting frame, a magnetic strip is installed on the mounting base, a baffle is installed in the ventilation hole through a rotating shaft, and the baffle is adapted to the size of the ventilation hole, the magnetic strip is magnetically fixed to one side of the baffle, and the baffle flips as the connecting frame moves to increase heat dissipation in the junction box.

[0019] Preferably, the ventilation hole has a blocking portion on the outer side of one end close to the magnetic strip, and the shielding plate is provided with a notch adapted to the blocking portion.

[0020] Preferably, the magnetic strip is flipped and mounted on the mounting seat, and the magnetic strip has at least one plane, and the corresponding plane is in contact with the surface of the shielding plate.

[0021] The present invention also provides a motor, comprising the motor output wire structure.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] When the temperature in the junction box reaches a set threshold, the liquid crystal elastic strip will deform and contract, and the external force squeezing the annular elastic member will be removed. The annular elastic member will recover due to its own elasticity, and the two ends will be separated from the first terminal and the second terminal, thereby cutting off the power supply and ensuring the safe use of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of the motor output wire structure in the present invention;

[0025] Figure 2 It is a schematic diagram of the three-dimensional structure of the motor output structure in the present invention;

[0026] Figure 3 This is a schematic diagram of the planar structure of the motor output structure installed on the motor;

[0027] Figure 4 for Figure 3 A in the middle is an enlarged structural diagram;

[0028] Figure 5 for Figure 3 The enlarged structural diagram at B in the middle;

[0029] Figure 6 It is a partial planar structural diagram of the motor output structure in the present invention;

[0030] Figure 7 Schematic diagram of the planar structure of the annular elastic member in the present invention;

[0031] Figure 8 Schematic diagram of the planar structure of the elastic card block in the present invention;

[0032] Figure 9 This is a schematic diagram of the motor structure in the present invention.

[0033] The numbers in the figure represent:

[0034] 11-box body; 12-cover plate; 13-frame-shaped magnetic block; 14-frame;

[0035] 21 - first terminal; 22 - second terminal; 23 - annular elastic member; 231 - conductive portion; 232 - insulating portion; 233 - contact surface; 24 - second telescopic rod;

[0036] 3-limiting mechanism; 31-first telescopic rod; 32-mounting plate; 33-liquid crystal elastic strip; 34-elastic clamping block; 341-concave inner cavity; 342-elastic portion; 35-support plate; 36-sliding rod; 37-clamping block; 38-spring;

[0037] 41-connecting rod; 42-connecting horizontal plate; 43-round rod;

[0038] 51-magnetic strip; 52-shield; 53-ventilation hole. DETAILED DESCRIPTION

[0039] The above and other technical features and advantages of the present invention are described in more detail below with reference to the accompanying drawings.

[0040] Embodiment 1: This embodiment provides a technical solution: a motor output structure, such as Figures 1 to 8 As shown, it includes a junction box and three sets of electric contact connection mechanisms, a connecting frame, and two sets of limiting mechanisms 3 integrated in the junction box, wherein the three sets of electric contact connection mechanisms are arranged in parallel.

[0041] The electric shock connection mechanism includes a first terminal 21 and a second terminal 22 symmetrically arranged on the inner wall of the junction box, and the second terminal 22 is electrically connected to the external power supply line, while the first terminal 21 contacts the internal wires of the motor. An annular elastic member 23 installed on the inner wall of the junction box is provided between the first terminal 21 and the second terminal 22. The annular elastic member 23 has a compression and widening characteristic. Compression and widening means that when the annular elastic member 23 is squeezed toward the inner wall of the junction box by an external force, the annular elastic member 23 will deform and expand laterally. At that time, the two ends of the annular elastic member 23 will respectively contact the first terminal 21 and the second terminal 22, and the power supply line, the second terminal 22, the annular elastic member 23 and the first terminal 21 form an electrical path to realize power supply to the motor; on the contrary, when the external force squeezing the annular elastic member 23 is removed, the annular elastic member 23 will recover due to its own elasticity, and the two ends will be separated from the first terminal 21 and the second terminal 22 to achieve power off.

[0042] The annular elastic member 23 includes a conductive portion 231 and an insulating portion 232 forming an annular structure, and the conductive portion 231 is installed on the inner wall of the junction box. Specifically, it can be fixed by screwing, bonding, etc. Both ends of the conductive portion 231 have a contact surface 233; the first terminal 21 and the second terminal 22 both have a protrusion inclined toward one side of the annular elastic member 23, and the end of the protrusion is adapted to the contact surface 233.

[0043] When the annular elastic member 23 is squeezed, both the conductive portion 231 and the insulating portion 232 will be deformed, and the two contact surfaces 233 will approach the first terminal 21 and the second terminal 22 respectively. Finally, the two contact surfaces 233 of the annular elastic member 23 will fit tightly with the first terminal 21 and the second terminal 22 respectively. Furthermore, due to the elasticity of the insulating portion 232, the first terminal 21, the second terminal 22 and the contact surfaces 233 will fit tightly together to ensure the stability of the electrical connection.

[0044] To ensure that the annular elastic member 23 can be smoothly compressed in the specified direction, a second telescopic rod 24 is fixed in the middle of the conductive portion 231 and the insulating portion 232 to guide the compression deformation of the annular elastic member 23 to prevent it from tilting.

[0045] The connecting frame is mounted on the side of the annular elastic members 23 in the three sets of electric contact connection mechanisms that is away from the inner wall of the junction box. The connecting frame includes three connecting rods 41 fixed to the middle of the three insulating parts 232. These three connecting rods 41 are commonly fixed to a connecting horizontal plate 42. Round rods 43 are fixed to both ends of the connecting horizontal plate 42. The round rods 43 are used to connect to the limiting mechanism 3. This arrangement allows the annular elastic members 23 in the three sets of electric contact connection mechanisms to be compressed or expanded synchronously.

[0046] Two sets of limiting mechanisms 3 are respectively installed on the inner wall of the junction box at each end of the connecting frame. They are used to softly fix the connecting frame. Soft fixation is fixed, but the fixing force is limited. When the set force is exceeded, the fixing relationship is lost. The limiting mechanism 3 includes an elastic block 34 and a support member that acts on the elastic block 34. The elastic block 34 is used to engage with the round rod 43. A mounting plate 32 is rotatably mounted on the side of the elastic block 34 near the inner wall of the junction box. A first telescopic rod 31 and a liquid crystal elastic strip 33 are installed between the mounting plate 32 and the inner wall of the junction box. The first telescopic rod 31 guides the movement of the elastic block 34.

[0047] The elastic card block 34 has a U-shaped structure as a whole, and a concave inner cavity 341 is formed inside it to adapt to the round rod 43. Elastic parts 342 are formed at both ends of the opening of the elastic card block 34. The elastic card block 34 has a certain elasticity as a whole. When the round rod 43 is squeezed into the interior of the elastic card block 34, both sides of the elastic card block 34 are stretched open, so that the round rod 43 is smoothly clamped in the concave inner cavity 341.

[0048] The liquid crystal elastic strip 33 is made of liquid crystal elastomer (LCE). Liquid crystal elastomers (LCEs) are a unique polymer material that combines the ordered molecular arrangement of liquid crystals with the flexibility of elastomers. At the molecular level, this material possesses the ordered structure of a liquid crystal phase while exhibiting the reversible deformation capabilities of an elastomer at a macroscopic level. LCEs exhibit a negative coefficient of thermal expansion, meaning their volume decreases as temperature increases. To enhance the sensitivity of the LCE strip 33, it is located near the annular elastic member 23.

[0049] The support member includes two support plates 35 fixed to the inner wall of the junction box. The two support plates 35 are respectively located on both sides of the elastic card block 34. Slide rods 36 are slidably installed on the two support plates 35. The sliding direction of the slide rod 36 is the direction of the connection line of the two support plates 35. A clamping block 37 is fixed on one side of the two support plates 35 close to the elastic card block 34. A spring 38 is provided between the clamping block 37 and the support plate 35. The two clamping blocks 37 give clamping force to the elastic card block 34 under the action of the spring 38 to achieve clamping of the round rod 43. When the elastic card block 34 is separated from the clamping block 37 due to the pulling force of the liquid crystal elastic strip 33, the elastic card block 34 will loosen the round rod 43.

[0050] When the spring 35 is in the closed position, the spring 35 is in the closed position, and the spring 35 is in the closed position, so that the spring 35 is in the closed position. When the spring 38 is pulled out of the locking cam 34, the spring 382 on both sides of the locking cam 34 is pulled out of the locking cam 34, and the spring 382 on both sides of the locking cam 34 is pulled out of the locking cam 34, so that the spring 382 on both sides of the locking cam 34 cannot expand outward. When the temperature in the junction box reaches the set temperature, the liquid crystal elastic strip 33 contracts to a certain size, and the elastic block 34 is pulled out of position by the liquid crystal elastic strip 33, and the elastic portions 342 on both sides of the elastic block 34 are no longer in contact with the clamping block 37. The elastic portions 342 on both sides of the elastic block 34 lose their restraining force. At the same time, the deformation degree of the insulating portion 232 of the annular elastic member 23 is also squeezed to the maximum, so the force generated by the deformation of the annular elastic member 23 is also large, and the elastic portions 342 on both sides of the elastic block 34 will not be able to restrain the round rod 43. The annular elastic member 23 returns to its original state, disconnecting the electrical connection between the first terminal 21 and the second terminal 22, thereby powering off and ensuring the safety of the motor.

[0051] Example 2: This example is further optimized based on Example 1, and the same parts as the above technical solutions will not be repeated here. Figures 3 to 5 As shown, in order to better implement the present invention, the following configuration is particularly adopted:

[0052] In this embodiment, the junction box includes a box body 11 and a cover plate 12 flexibly fixed to the box body 11 .

[0053] Furthermore, a frame-shaped magnetic block 13 is fixed to the port of the box body 11, and the cover 12 is made of a magnetic material. The cover 12 is magnetically fixed to the frame-shaped magnetic block 13. Therefore, under a certain force, the cover 12 can be pushed open to open the junction box. A frame 14 that cooperates with the frame-shaped magnetic block 13 is fixed to the outside of the cover 12. The frame 14 can be adaptably buckled on the outside of the frame-shaped magnetic block 13, ensuring the sealing and stability of the connection between the box body 11 and the cover 12.

[0054] In this embodiment, a heat sink is provided on the cover plate 12 to increase the heat dissipation efficiency in the junction box. The heat sink includes a ventilation hole 53 opened on the cover plate 12 and a mounting base fixed to the connecting frame. A magnetic strip 51 is installed on the mounting base. The number of ventilation holes 53 and the number of magnetic strips 51 are both multiple and arranged in a one-to-one correspondence. A baffle 52 is installed in the ventilation hole 53 by rotating through a rotating shaft, and the baffle 52 is adapted to the size of the ventilation hole 53. When the baffle 52 is flipped over and enters the ventilation hole 53, the baffle 52 can cover all the ventilation holes 53, and the magnetic strip 51 is magnetically fixed to one side of the baffle 52.

[0055] When the temperature inside the junction box rises, the connecting frame will move toward one side of the motor, and further pull one side of the baffle 52 inward through the magnetic strip 51, causing the baffle 52 to flip over and gradually open the ventilation holes 53 to increase the heat dissipation in the junction box. The flipping angle of the baffle 52 is positively correlated with the temperature. Therefore, the higher the temperature in the junction box, the larger the angle at which the baffle 52 is opened, and the better the heat dissipation efficiency. When the temperature is normal, the ventilation holes 53 can be blocked by the baffle 52 to prevent dust from entering the junction box.

[0056] Furthermore, the ventilation hole 53 has a blocking portion on the outer side of one end close to the magnetic strip 51, and a notch adapted to the blocking portion is opened on the shielding plate 52. This setting can limit the end of the ventilation hole 53 close to the magnetic strip 51 from flipping to the outside of the junction box, thereby limiting the angle of the shielding plate 52.

[0057] Assume that the center position of the baffle plate 52 is point A, and the rotating shaft is located on the side of point A close to the magnetic strip 51. This setting can ensure that the baffle plate 52 will always be in a state of blocking the ventilation hole 53 due to its own gravity and without being affected by other forces; for example, when the cover plate 12 is installed vertically, the baffle plate 52 will be in a vertical state due to gravity, blocking the ventilation hole 53; when the cover plate 12 is installed upward or tilted upward, the end of the baffle plate 52 away from the magnetic strip 51 will have a tendency to flip into the junction box, but due to the setting of the blocking part, the end of the baffle plate 52 close to the magnetic strip 51 can be prevented from flipping to the outside of the junction box, so that the baffle plate 52 is at the maximum angle, and it is located in the ventilation hole 53, blocking the ventilation hole 53.

[0058] Furthermore, the magnetic strip 51 is flipped and installed on the mounting base, and the magnetic strip 51 has at least one plane, and the corresponding plane is in contact with the surface of the baffle 52. The advantage of the flip setting of the magnetic strip 51 is that when the baffle 52 flips, the magnetic strip 51 will also flip along with it to ensure that the plane on the magnetic strip 51 can always fit with the baffle 52 to ensure the stability of the connection between the two.

[0059] In this embodiment, when the temperature inside the junction box reaches a threshold, the annular elastic member 23 will cut off the power due to its own elasticity. At the same time, the annular elastic member 23 can also push open the cover 13 to facilitate direct maintenance by staff.

[0060] Embodiment 3, a motor, such as Figures 1 to 9 As shown, the motor outlet structure in the above embodiment is included, the box body 11 of the junction box is fixed on the motor housing, and the first terminal 21 in the motor outlet structure is electrically connected to the power line inside the motor.

[0061] The above are only preferred embodiments of the present invention and are merely illustrative, not restrictive, of the present invention. Those skilled in the art will appreciate that many changes, modifications, and even equivalents may be made to the embodiments within the spirit and scope of the claims, all of which fall within the scope of protection of the present invention.

Claims

1. A motor outlet structure, characterized in that: include: Junction box; Three sets of electric contact connection mechanisms, the electric contact connection mechanisms comprising a first terminal (21) and a second terminal (22) symmetrically arranged on the inner wall of the junction box, the second terminal (22) being electrically connected to an external power supply line, an annular elastic member (23) mounted on the inner wall of the junction box being arranged between the first terminal (21) and the second terminal (22), the annular elastic member (23) having a compression widening characteristic; A connecting frame, the connecting frame being mounted on a side of the annular elastic member (23) in the three sets of electric contact connection mechanisms away from the inner wall of the junction box; Two sets of limiting mechanisms (3), the two sets of limiting mechanisms (3) are respectively arranged on the inner walls of the junction box at both ends of the connecting frame, and are used to softly fix the connecting frame, the annular elastic member (23) will be compressed and widened, and the two ends are respectively electrically connected to the first wiring terminal (21) and the second wiring terminal (22) to achieve power supply; when the temperature in the junction box reaches the set temperature, the limiting mechanism (3) loosens the connecting frame, and the annular elastic member (23) is disconnected from the first wiring terminal (21) and the second wiring terminal (22) due to its own elastic recovery, so as to achieve power off; The limiting mechanism (3) comprises an elastic card block (34) and a support member acting on the elastic card block (34); the elastic card block (34) is used to be clamped with the connecting frame; a mounting plate (32) is rotatably mounted on one side of the elastic card block (34) close to the inner wall of the junction box; a first telescopic rod (31) and a liquid crystal elastic strip (33) are mounted between the mounting plate (32) and the inner wall of the junction box; The support member includes two support plates (35) fixed to the inner wall of the junction box, the two support plates (35) are respectively located on both sides of the elastic block (34), and a slide rod (36) is slidably installed on the two support plates (35), and the sliding direction of the slide rod (36) is the connecting direction of the two support plates (35). A clamping block (37) is fixed on one side of the two support plates (35) close to the elastic block (34), and a spring (38) is provided between the clamping block (37) and the support plate (35). The two clamping blocks (37) give a clamping force to the elastic block (34) under the action of the spring (38) to achieve clamping of the connecting frame. When the elastic block (34) is separated from the clamping block (37) due to the pulling force of the liquid crystal elastic strip (33), the elastic block (34) will loosen the connecting frame.

2. The motor outlet structure according to claim 1, characterized in that: The annular elastic member (23) comprises a conductive portion (231) and an insulating portion (232) forming an annular structure, and the conductive portion (231) is mounted on the inner wall of the junction box, and both ends of the conductive portion (231) have contact surfaces (233); The first connecting terminal (21) and the second connecting terminal (22) both have a protrusion inclined toward one side of the annular elastic member (23), and the end of the protrusion is adapted to the contact surface (233).

3. The motor outlet structure according to claim 2, characterized in that: The connecting frame comprises three connecting rods (41) respectively fixed at the middle positions of the three insulating parts (232), and the three connecting rods (41) are commonly fixed with a connecting transverse plate (42), and round rods (43) are fixed at both ends of the connecting transverse plate (42), and the round rods (43) are used to connect with the limiting mechanism (3).

4. The motor outlet structure according to claim 3, characterized in that: The elastic block (34) is of a U-shaped structure as a whole, and a concave inner cavity (341) is formed therein to match the round rod (43), and elastic portions (342) are formed at both ends of the opening of the elastic block (34).

5. The motor outlet structure according to claim 1, characterized in that: The junction box comprises a box body (11) and a cover plate (12) softly fixed to the box body (11); A frame-shaped magnetic block (13) is fixed to the port of the box body (11), the cover plate (12) is fixed to the frame-shaped magnetic block (13) by magnetic attraction, and a frame (14) that cooperates with the frame-shaped magnetic block (13) is fixed to the outer side of the cover plate (12).

6. The motor outlet structure according to claim 5, characterized in that: A heat sink is provided on the cover plate (12), and the heat sink comprises a ventilation hole (53) opened on the cover plate (12) and a mounting seat fixed to the connecting frame, a magnetic strip (51) is mounted on the mounting seat, a shielding plate (52) is mounted in the ventilation hole (53) by rotating through a rotating shaft, and the shielding plate (52) is adapted to the size of the ventilation hole (53), the magnetic strip (51) is fixed to one side of the shielding plate (52) by magnetic attraction, and the shielding plate (52) flips as the connecting frame moves to increase heat dissipation in the junction box.

7. The motor outlet structure according to claim 6, characterized in that: The ventilation hole (53) has a stopper on the outer side of one end close to the magnetic strip (51), and the shielding plate (52) is provided with a notch adapted to the stopper.

8. The motor outlet structure according to claim 6, characterized in that: The magnetic strip (51) is flipped and mounted on the mounting seat, and the magnetic strip (51) has at least one plane, and the corresponding plane is in contact with the surface of the shielding plate (52).

9. A motor, characterized in that: It comprises the motor lead-out structure according to any one of claims 1 to 8.

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