CN219458762U - Stator water jacket structure - Google Patents

Abstract

The utility model provides a stator water jacket structure, and belongs to the technical field of machinery. The water jacket solves the problem of how to improve the installation convenience of the stator and the water jacket. The stator water jacket structure comprises an inner shell sleeved outside a stator, wherein the outer side wall of the stator is in interference fit with the inner side wall of the inner shell, one end of the stator is provided with a positioning plate, and the positioning plate is connected with the inner shell through a fastener to enable the stator to be circumferentially positioned in the inner shell. The stator water jacket structure can improve the convenience of installation of the stator and the water jacket.

Description

Stator water jacket structure

Technical Field

The utility model belongs to the technical field of machinery, and relates to a stator water jacket structure.

Background

In a new energy automobile, in order to avoid overheat generated by long-time working of an electric drive system, a cooling system is generally arranged in a cavity of the electric drive system, a water jacket is an important component in the cooling system and generally comprises an inner shell and an outer shell which are sleeved with each other and fixed through fasteners, a stator of a motor is embedded in the inner shell, a runner for cooling liquid to flow is formed between the inner shell and the outer shell in a surrounding manner, and the cooling liquid can dissipate heat of the motor through circulating flow of the cooling liquid.

The stator and the inner shell in the motor are generally connected in a key slot matching mode at present, specifically, a plurality of positioning keys are fixedly arranged at the opening end of the inner shell, a plurality of positioning grooves are formed in the stator of the motor, and when the motor is assembled, the stator is inserted into the shell and is circumferentially limited by matching the positioning keys with the positioning grooves.

However, the inner shell of the water jacket is generally formed by adopting the process modes of stretching, casting and the like, the stator is formed by overlapping and fixing a plurality of punching sheets, each positioning key and each positioning groove cannot be directly formed integrally, secondary processing is required, the production and assembly efficiency is greatly influenced, meanwhile, when the assembly is carried out, the processing precision requirements on the positioning keys and the positioning grooves are extremely high, the position precision of each positioning key cannot be ensured by the inner shell of the water jacket formed by secondary processing, the phenomenon of out-of-tolerance between the positioning keys and the positioning grooves is easily caused, so that the stator of the motor cannot be positioned after being installed in the inner shell of the water jacket is caused, and interference existing in the assembly process is also extremely likely to cause the damage of the stator or the inner shell of the water jacket.

Disclosure of Invention

The utility model aims at solving the problems in the prior art, and provides a stator water jacket structure, which aims at solving the technical problems that: how to improve the convenience of the installation of the stator and the water jacket.

The aim of the utility model can be achieved by the following technical scheme: the utility model provides a stator water jacket structure, includes the inner shell of cover outside the stator, its characterized in that, the lateral wall of stator and the inside wall interference fit of inner shell, and the one end of stator is equipped with the locating plate, and the locating plate passes through the fastener to be connected with the inner shell and makes the stator by circumference location in the inner shell.

In this stator water jacket structure, the stator is connected through the mode of pegging graft with the inner shell, through the circumference lateral wall of stator and the circumference lateral wall interference fit of water jacket after inserting, from this through the direct stator of inner shell once fix a position in circumference and axial, simultaneously, set up the installation locating plate in the one end of stator, and dismantle through the fastener between locating plate and the inner shell and be connected, thereby make stator and inner shell by the secondary location in circumference direction, guarantee the stability that both are connected, compared with the prior art, the scheme is through the mode of direct grafting, lead through the outer wall of stator and the inner wall cooperation of inner shell, thereby guarantee convenient assembling simultaneously because interference fit, with this play circumference and circumference upward prevent the purpose of drunkenness, and the locating plate structure of cooperation installation on the stator, need not on stator and inner shell secondary processing locating pin and locating key structure, reduce the required precision requirement of installation when optimizing production technology, and then improve the assembly convenience.

In the stator water jacket structure, the positioning plate is strip-shaped and bent to be arc-shaped, the outer side wall of the positioning plate is provided with the connecting part, the connecting part is provided with the connecting hole, the outer wall of the upper end of the inner shell is provided with the mounting part, the mounting part is provided with the mounting hole, and the stator and the inner shell penetrate through the connecting hole through the fastening piece and are screwed into the mounting hole to enable the stator to be positioned circumferentially.

Through being arcuation with the crooked setting of locating plate to make the shape of locating plate more cooperate with the lateral wall of stator, improve the area of contact between locating plate and the stator outer wall in the time of guaranteeing make full use of space, thereby guarantee the installation stability of locating plate, and as a concrete scheme, the connecting hole is seted up through connecting portion on self lateral wall to the locating plate, and set up the installation department of installing hole on the upper end outer wall of inner shell, stator and inner shell pass the connecting hole through the fastener and screw in the installing hole with the inner shell both, be connected stator and inner shell through the locating plate, realize the stator by secondary circumference location in the inner shell from this.

In the stator water jacket structure, the mounting part is further provided with a positioning hole, a positioning step is formed between the positioning hole and the mounting hole, a cylindrical steel sleeve is embedded in the connecting hole, the lower end of the steel sleeve is provided with an inserting part, and the inserting part is inserted into the positioning hole and abuts against the positioning step.

In the assembling process, namely before the fastening piece is not assembled, a user can embed the copper bush into the connecting hole, and the inserting part at the lower end of the copper bush stretches into the positioning hole and abuts against the positioning step, so that the stator and the inner shell are pre-fixed before secondary circumferential positioning, and the situation that the stator rotates in the inner shell in the assembling process is avoided.

In the stator water jacket structure, a plurality of contact pins are arranged at the circumferential edge of the upper end edge of the stator, a plurality of plug holes are formed in the positioning plate along the length direction, and each contact pin is correspondingly plugged in each plug hole.

The locating plate is in one-to-one corresponding insertion connection with a plurality of contact pins at the upper end of the stator through a plurality of insertion holes, so that the locating plate can be fixed through the cooperation of the plurality of insertion holes and the plurality of contact pins on the premise of being detachable relative to the stator after being installed on the stator.

In the stator water jacket structure, a plurality of reinforcing ribs are arranged between the connecting part and the outer side wall of the positioning plate.

Through the setting of a plurality of strengthening ribs to guarantee the structural strength between connecting portion and the locating plate outer wall, avoid the fastener to screw up the locking force that forms and cause connecting portion fracture.

In the stator water jacket structure, a plurality of threading holes for the stator leads to penetrate are formed in the positioning plate along the length direction.

A plurality of threading holes are further formed in the positioning plate, so that leads of the stator can be led out through the threading holes in the positioning plate, and interference phenomenon is avoided.

In the stator water jacket structure, a plurality of fixing portions are arranged on the outer wall of the upper end of the inner shell at intervals along the circumferential direction, and each fixing portion is provided with a fixing hole.

After the stator and the inner shell are assembled, the inner shell provided with the stator needs to be inserted into the outer shell of the water jacket, so that a flow passage is formed between the inner shell and the outer shell, and the inner shell and the outer shell are positioned in the axial direction and the radial direction by penetrating through the fixing holes on the fixing parts through the connecting pieces and screwing the connecting pieces into the holes formed in the outer shell of the water jacket.

In the stator water jacket structure, the positioning plate is integrally injection molded by plastic.

The locating plate is formed integrally by plastic material injection molding, so that the production and use cost is low, meanwhile, the plastic material has good insulativity, and the safety problems of motor power generation and power utilization can be completely avoided.

Compared with the prior art, the stator water jacket structure has the following advantages:

through inserting the stator into the inner shell and making the outer wall of stator and the inner wall interference fit of inner shell for the stator is once fixed a position in circumference and circumference direction, installs the locating plate simultaneously on the stator, and connects locating plate and inner shell through the fastener, makes the stator by the secondary fixed in circumference direction, need not on the stator and on the inner shell secondary operation locating pin and locating key structure, reduces the required precision requirement of installation when optimizing production technology, improves the assembly convenience.

Drawings

Fig. 1 is a schematic structural view of the present stator water jacket structure.

Fig. 2 is a schematic structural view of a stator.

Fig. 3 is a schematic structural view of the housing and a partial enlarged view thereof.

Fig. 4 is a schematic structural view of the positioning plate.

Fig. 5 is a schematic view of the structure of the steel jacket.

In the figure, 1, a stator; 11. a contact pin; 2. an inner case; 21. a mounting part; 211. a mounting hole; 212. positioning holes; 213. positioning the step; 22. a fixing part; 221. a fixing hole; 3. a positioning plate; 31. a connection part; 311. a connection hole; 32. a plug hole; 33. a threading hole; 4. a steel sleeve; 41. a plug-in part; 5. reinforcing ribs.

Detailed Description

The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.

As shown in fig. 1-3, in the water jacket structure of the stator, the water jacket comprises an inner shell 2 which is cylindrical and has two ends penetrating through, the stator 1 is inserted into the inner shell 2, and the circumferential outer side wall of the stator 1 is in interference fit with the circumferential inner side wall of the inner shell 2 in a hot pressing manner, so that the stator 1 is positioned in the shell at one time in the axial direction and the circumferential direction.

Referring to fig. 4, the upper end of the stator 1 is provided with a plurality of pins 11 along the circumferential direction, the stator water jacket structure further comprises a positioning plate 3 which is strip-shaped and curved and is provided with a plurality of plug holes 32 which are in one-to-one correspondence with the pins 11 along the length direction, the positioning plate 3 is inserted into the plug holes 32 in one-to-one correspondence with the pins 11 to be positioned at the upper end of the stator 1, the positioning plate 3 is formed by plastic injection molding, one end of the positioning plate 3 is provided with a connecting part 31 which is triangular, the connecting part 31 is provided with a connecting hole 311, the upper end of the inner shell 2 is integrally provided with a mounting part 21, the mounting part 21 is provided with a mounting hole 211, and the positioning plate 3 passes through the connecting hole 311 through bolts or screws and is screwed into the mounting hole 211, so that the stator 1 is secondarily positioned along the circumferential direction.

In addition, be provided with a plurality of through wires holes 33 along length direction interval on the locating plate 3, the lead wire that stator 1 upper end was installed can pass through the through wires hole 33 and be connected with other spare parts of car, and integrated into one piece has a plurality of strengthening ribs 5 between connecting portion 31 and the lateral wall of locating plate 3.

Referring to fig. 5, a positioning hole 212 located above the mounting hole 211 is formed in the mounting portion 21, a positioning step 213 is formed between the positioning hole 212 and the mounting hole 211, an annular steel sleeve 4 is detachably arranged in a connecting hole 311 of the connecting portion 31, an inserting portion 41 is protruded at the lower end of the steel sleeve 4, after the stator 1 is installed into the inner shell 2, an installer can insert the steel sleeve 4 into the mounting hole 211, the inserting portion 41 at the lower end of the installer is inserted into the positioning hole 212 and abuts against the positioning step 213, and therefore the stator 1 is positioned with the positioning step before being positioned in the secondary circumferential direction, and accuracy and precision of a three-phase wire outlet position of the motor are guaranteed.

As shown in fig. 4, a plurality of fixing portions 22 are circumferentially arranged on the outer side wall of the upper end of the inner shell 2 at intervals, fixing holes 221 are formed in each fixing portion 22, after the stator 1 and the inner shell 2 are assembled, an installer needs to plug the inner shell 2 into the water jacket outer shell, a runner is formed between the inner shell 2 and the outer shell in a surrounding manner, bolts or screws penetrate through the fixing holes 221 and screw into threaded holes formed in the outer shell, the inner shell 2 and the outer shell are fixed together, connection stability between the inner shell 2 and the outer shell is guaranteed, and deformation of a water channel is avoided.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Although terms such as the stator 1, the pin 11, the inner housing 2, the mounting portion 21, the mounting hole 211, the positioning hole 212, the positioning step 213, the fixing portion 22, the fixing hole 221, the positioning plate 3, the connection portion 31, the connection hole 311, the insertion hole 32, the threading hole 33, the steel bushing 4, the insertion portion 41, the reinforcing rib 5, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely for convenience in describing and explaining the nature of the utility model; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present utility model.

Claims (8)

1. The utility model provides a stator water jacket structure, establishes inner shell (2) outside stator (1) including the cover, its characterized in that, the lateral wall of stator (1) and the inside wall interference fit of inner shell (2), the one end of stator (1) is equipped with locating plate (3), and locating plate (3) are connected messenger's stator (1) by fastener and inner shell (2) and are located in inner shell (2) by circumference.

2. The stator water jacket structure according to claim 1, characterized in that the positioning plate (3) is strip-shaped and curved in an arc shape, a connecting portion (31) is provided on the outer side wall of the positioning plate (3), a connecting hole (311) is provided on the connecting portion (31), a mounting portion (21) is provided on the outer wall of the upper end of the inner housing (2), a mounting hole (211) is provided on the mounting portion (21), and the stator (1) and the inner housing (2) pass through the connecting hole (311) through a fastener and are screwed into the mounting hole (211) to enable the stator (1) to be circumferentially positioned.

3. The stator water jacket structure according to claim 2, characterized in that the mounting portion (21) is further provided with a positioning hole (212), a positioning step (213) is formed between the positioning hole (212) and the mounting hole (211), a cylindrical steel sleeve (4) is embedded in the connecting hole (311), a plug portion (41) is arranged at the lower end of the steel sleeve (4), and the plug portion (41) is inserted into the positioning hole (212) and abuts against the positioning step (213).

4. The stator water jacket structure according to any one of claims 1 to 3, characterized in that a plurality of pins (11) are provided at the circumferential edge of the upper end edge of the stator (1), a plurality of insertion holes (32) are provided on the positioning plate (3) along the length direction, and each pin (11) is inserted into each insertion hole (32) correspondingly.

5. A stator water jacket structure according to claim 2 or 3, characterized in that a plurality of reinforcing ribs (5) are provided between the connecting portion (31) and the outer side wall of the positioning plate (3).

6. The stator water jacket structure according to claim 4, characterized in that the positioning plate (3) is provided with a plurality of threading holes (33) for threading the stator lead wires along the length direction.

7. The stator water jacket structure according to claim 6, characterized in that a plurality of fixing portions (22) are circumferentially arranged on the outer wall of the upper end of the inner housing (2) at intervals, and each fixing portion (22) is provided with a fixing hole (221).

8. The stator water jacket structure according to claim 7, characterized in that the positioning plate (3) is integrally injection-molded from plastic.