Motor and cooling structure of motor

Abstract

The utility model discloses a motor and a cooling structure of the motor, the cooling structure comprises a motor shell and a cover body, the upper end and the lower end of the outer side surface of the motor shell are respectively provided with an upper step and a lower step, and a continuously extending liquid cooling channel is annularly arranged between the upper step and the lower step; the first water retaining strip and the second water retaining strip are arranged between the upper step and the lower step in a spaced mode, the first water retaining strip is used for completely blocking the liquid cooling channel, the second water retaining strip is used for incompletely blocking the liquid cooling channel, and a clearance for allowing the liquid cooling channel to circulate is formed between the upper tail end of the second water retaining strip and the upper step; the liquid inlet and the liquid outlet are formed in two opposite side surfaces of the first water retaining strip and are communicated with the liquid cooling channel; the cover body sleeves the outer side surface of the motor shell; and the upper and lower tail ends of the cover body are respectively connected with the upper step and the lower step in a sealing welding manner. And the upper and lower tail ends of the cover body are hermetically welded with the motor shell, so that the technical problem of unreliability caused by adopting a sealing ring for sealing in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a motor and a cooling structure of the motor. Background Art

[0002] Servo motors typically operate under heavy loads, generating significant heat that requires additional heat dissipation measures to ensure proper operation. Currently, many servo motors utilize a water-cooling solution. This involves installing a water-cooling housing outside the motor housing, with both ends of the water-cooling housing sealed to the motor housing using sealing rings. However, existing technologies have the following drawbacks: due to the small gap between the water-cooling housing and the motor housing, the sealing ring can be easily damaged or improperly installed when the water-cooling housing is installed within the motor housing. Furthermore, the sealing ring is susceptible to aging, resulting in poor motor reliability. Utility Model Content

[0003] The utility model aims to provide a motor and a cooling structure for the motor. Sealing welding is adopted between the upper and lower ends of the cover and the motor housing to solve the technical problem of unreliable sealing using sealing rings in the prior art.

[0004] The utility model proposes a cooling structure of a motor, comprising a motor housing and a cover body, wherein the upper and lower ends of the outer side surface of the motor housing are respectively provided with an upper step and a lower step, and a continuously extending liquid cooling channel is annularly arranged between the upper step and the lower step; the utility model also comprises: a first water retaining bar for completely blocking the liquid cooling channel and a second water retaining bar for partially blocking the liquid cooling channel, and an escape gap is provided between the upper end of the second water retaining bar and the upper step for providing a liquid cooling channel for circulation; a liquid inlet and a liquid outlet are arranged on two opposite sides of the first water retaining bar or the second water retaining bar and are both connected to the liquid cooling channel; the cover body is sleeved on the outer side surface of the motor housing, and the upper and lower ends of the cover body are respectively sealed and welded to the upper step and the lower step.

[0005] In some preferred embodiments, a first slot body and a second slot body are respectively provided on the outer side surface of the motor housing for adapting the first water retaining bar and the second water retaining bar, and the first water retaining bar and the second water retaining bar are respectively inserted into the first slot body and the second slot body.

[0006] In some preferred embodiments, the first water retaining bar and the second water retaining bar are both provided with guiding inclined surfaces for facilitating insertion into the first trough body and the second trough body, respectively.

[0007] In some preferred embodiments, the first trough body or the second trough body is provided with a fool-proof hole.

[0008] In some preferred embodiments, the liquid inlet and the liquid outlet are both configured as threaded structures.

[0009] In some preferred embodiments, the lower side surface of the first step and the upper side surface of the second step are both provided with chamfered structures.

[0010] In some preferred embodiments, a plurality of protrusions are provided on the outer side surface of the motor housing, and grooves between adjacent protrusions form liquid cooling channels.

[0011] In some preferred embodiments, the cover body is a quadrilateral plate that is bent into a cylindrical shape as a whole, and the head end and the tail end of the cover body are respectively sealed and welded to two opposite side surfaces of the first water retaining bar.

[0012] In some preferred embodiments, the cover body includes two semicircular sub-cover bodies, which are arranged opposite to each other, and the head end and the tail end of each sub-cover body are respectively sealed and welded to the first water retaining bar and the second water retaining bar.

[0013] Correspondingly, the utility model also discloses a motor, comprising a motor stator and a motor mover coaxially arranged with the motor stator; and also comprising the cooling structure, wherein the motor stator is fixed to the inner side surface of the motor housing.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The utility model improves the assembly method of the cover body and the motor housing by sealingly welding the upper and lower ends of the cover body to the upper and lower steps of the motor housing, respectively. The utility model eliminates the need for sealing rings or sealing strips when assembling the cover body and the motor housing, thus overcoming the defects of the prior art that use sealing rings, such as inconvenient assembly, unreliable assembly, and easy aging of the sealing ring, which can lead to unreliable sealing.

[0016] In addition, the utility model isolates the liquid cooling channel of the motor housing through the first water retaining bar and the second water retaining bar, and respectively arranges the liquid inlet and the liquid outlet on two opposite sides of the first water retaining bar, so that after the cover body is assembled to the motor housing, a closed and extended liquid cooling channel is formed between the cover body and the motor housing, flowing through various different positions of the motor housing, with good heat dissipation effect and easy production and manufacturing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the motor in a partially cutaway state.

[0018] Figure 2 yes Figure 1 An enlarged schematic diagram of part A.

[0019] Figure 3 It is a schematic diagram of the decomposed structure of the motor's cooling structure.

[0020] Figure 4 It is a structural schematic diagram of a first slot body provided on a motor housing.

[0021] Figure 5 It is a structural schematic diagram of the first water retaining bar inserted into the motor housing.

[0022] Figure 6 It is a structural schematic diagram of a second slot body provided on the motor housing.

[0023] Figure 7 It is a structural schematic diagram of the second water retaining bar inserted into the motor housing. DETAILED DESCRIPTION

[0024] To further illustrate the technical means and effects employed by this application to achieve its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of this application is provided in conjunction with the accompanying drawings and preferred embodiments. In the following description, different references to "one embodiment" or "embodiment" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics of one or more embodiments may be combined in any suitable manner.

[0025] like Figure 1 and Figure 2 As shown, the present invention discloses a motor with a cooling structure. The motor includes a motor stator and a motor mover coaxially arranged with the motor stator. The motor cooling structure comprises a motor housing 1 and a cover 2 disposed on the outer side of the motor housing 1. The motor stator and the motor mover are both disposed within the motor housing 1, with the motor stator fixed to the inner side of the motor housing 1. The cooling structure rapidly dissipates heat generated by the motor stator during operation.

[0026] Further integration Figure 3-Figure 7 As shown, the upper and lower ends of the outer side of the motor housing 1 are respectively provided with an upper step 11 and a lower step 12, and a continuously extending liquid cooling channel 10 is arranged between the upper step 11 and the lower step 12. The coolant flows in the liquid cooling channel 10 to improve the heat dissipation capacity of the cooling structure.

[0027] For example, a plurality of annularly extending protrusions are provided on the outer side surface of the motor housing 1 , and grooves between adjacent protrusions form liquid cooling channels 10 .

[0028] In addition, a first water retaining bar 3 and a second water retaining bar 4 are provided between the upper step 11 and the lower step 12. The first water retaining bar 3 is used to completely block the liquid cooling channel, that is, the first water retaining bar 3 blocks all liquid cooling channels 10 at different heights between the upper step 11 and the lower step 12. The second water retaining bar 4 is used to partially block the liquid cooling channel, and there is a clearance gap between the upper end of the second water retaining bar 4 and the upper step 11 to provide circulation of the liquid cooling channel. For example, the clearance gap is formed by the liquid cooling channel 10 closest to the upper step 11.

[0029] Through the cooperation of the first water retaining bar 3 and the second water retaining bar 4, the liquid cooling channel 10 arranged on the outer side of the motor housing 1 is divided into two parts: the first part of the liquid cooling channel 10 is between one side of the first water retaining bar 3 and the second water retaining bar 4, and the second part of the liquid cooling channel 10 is between one side of the first water retaining bar 3 and the second water retaining bar 4, and the first part is connected to the second part through the space between the upper end of the second water retaining bar 4 and the upper step 11.

[0030] In addition, a liquid inlet 15 and a liquid outlet 16, both of which are connected to the liquid cooling channel 10, are provided on two opposite sides of the first water retaining bar 3. Since the first water retaining bar 3 and the second water retaining bar 4 are spaced apart on the outer side of the cylindrical motor housing 1, the liquid inlet 15 and the liquid outlet 16 are also respectively located on two opposite sides of the second water retaining bar 4. The first water retaining bar 3 and the second water retaining bar 4 isolate the liquid inlet 15 from the liquid outlet 16, so that after the coolant enters from the liquid inlet 15, it can only enter the side of the second water retaining bar 4 where the liquid outlet 16 is provided through the clearance gap at the upper end of the second water retaining bar 4, and finally flow out from the liquid outlet 16.

[0031] The liquid inlet 15 and the liquid outlet 16 are both configured as threaded structures, which facilitates connection to external connectors without requiring additional sealing rings or other sealing components.

[0032] The cover 2 is sleeved onto the outer surface of the motor housing 1. Specifically, the present invention improves the assembly method of the cover 2 and the motor housing 1 by sealingly welding the upper and lower ends of the cover 2 to the upper step 11 and lower step 12 of the motor housing 1, respectively. This eliminates the need for sealing rings or sealing strips when assembling the cover 2 and the motor housing 1, thus overcoming the drawbacks of the prior art, such as the inconvenient and unreliable assembly of sealing rings and the unreliable sealing caused by the aging of sealing rings.

[0033] In order to facilitate the sealing welding of the upper and lower ends of the cover body 2 to the upper step 11 and the lower step 12 of the motor housing 1, respectively, a chamfered structure 13 is provided on the lower side surface of the first step 11 and the upper side surface of the second step 12. The chamfered structure 13 is used as a welding space so that more welds can be formed between the cover body 2 and the motor housing 1 during the welding process to achieve a tighter combination, thereby ensuring the reliability of the welded sealing connection.

[0034] A first groove 17 and a second groove 18 are respectively provided on the outer side of the motor housing 1 for adapting the first water retaining bar 3 and the second water retaining bar 4. The first water retaining bar 3 and the second water retaining bar 4 are respectively inserted into the first groove 17 and the second groove 18. The first water retaining bar 3 and the second water retaining bar 4 are respectively fixed in the first groove 17 and the second groove 18 by any existing fixing means such as bonding, riveting, and limit fit.

[0035] Since the first water retaining bar 3 is used to completely block the liquid cooling channel, the first tank body 17 passes through the liquid cooling channels 10 at different heights in the longitudinal direction, so that after the first water retaining bar 3 is inserted into the first tank body 17, the liquid cooling channels 10 on the left and right sides of the first water retaining bar 3 are blocked and separated into two non-communicating parts, such as Figure 4-Figure 5 shown.

[0036] Since the second water retaining bar 4 does not completely block the liquid cooling channel, the second tank body 18 does not extend to at least one liquid cooling channel 10 near the upper step 11. After the second water retaining bar 4 is inserted into the first tank body 18, the coolant in the liquid cooling channels 10 on the left and right sides of the second water retaining bar 4 can flow through the liquid cooling channels 10 not extended by the second tank body 18. Figure 6 and Figure 7 shown.

[0037] Furthermore, the first water retaining bar 3 and the second water retaining bar 4 are both provided with guiding inclined surfaces for facilitating insertion into the first trough body 17 and the second trough body 18 respectively, so as to facilitate operation and use.

[0038] In order to improve the assembly efficiency of the motor manufacturing process and prevent the second water retaining bar 4 from being mistakenly inserted into the first slot body 17, an anti-foolproof hole is provided in the first slot body 17 or the second slot body 18, through which only the first water retaining bar 3 can be inserted into the first slot body 17, or only the second water retaining bar 4 can be inserted into the second slot body 18.

[0039] In some embodiments, the cover body 2 is a quadrilateral plate that is bent into a cylindrical shape. The head and tail ends of the cover body are respectively sealed and welded to the two opposite sides of the first water retaining bar 3. This not only ensures that the first water retaining bar 3 can completely block the liquid cooling channels 10 at different heights, but also increases the sealing welding position of the cover body 2 and improves the firmness of the assembly structure between the cover body 2 and the motor housing 1.

[0040] Of course, the cover body 2 can also include two semicircular sub-cover bodies, which are arranged opposite to each other, and the head end and tail end of each sub-cover body are respectively sealed and welded to the first water retaining bar 3 and the second water retaining bar 4, so that a complete cylindrical cover body 22 is formed by the relative welding of the two sub-cover bodies.

[0041] In addition, a plurality of vertical slots 19 are provided on the inner sidewall of the motor housing 1. When the motor stator is assembled in the motor housing 1, the motor stator and the inner sidewall of the motor housing 1 are fitted together. Glue is poured into the vertical slots 19 to secure the motor housing 1 and the motor stator together, forming a fixed structure that prevents the motor stator from rotating. Therefore, there is good thermal conductivity between the motor stator and the motor housing 1. The coolant flowing through the liquid cooling channel 10 removes most of the heat from the motor housing 1, preventing the heat generated by the motor from accumulating inside the motor, thereby improving the stability of the motor operation.

[0042] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A cooling structure for a motor, comprising a motor housing and a cover, wherein upper and lower ends of the outer side of the motor housing are respectively provided with an upper step and a lower step, and a continuously extending liquid cooling channel is provided between the upper step and the lower step; characterized in that: Also includes: A first water retaining bar for completely blocking the liquid cooling channel and a second water retaining bar for partially blocking the liquid cooling channel are arranged between the upper step and the lower step, and a gap is provided between the upper end of the second water retaining bar and the upper step to provide a space for the liquid cooling channel to flow; A liquid inlet and a liquid outlet are provided on two opposite sides of the first water retaining bar or the second water retaining bar and are both connected to the liquid cooling channel; The cover body is sleeved on the outer side surface of the motor housing, and the upper and lower ends of the cover body are respectively connected with the upper step and the lower step by sealing welding.

2. The cooling structure according to claim 1, characterized in that: A first slot body and a second slot body are respectively provided on the outer side surface of the motor housing for adapting the first water retaining bar and the second water retaining bar. The first water retaining bar and the second water retaining bar are respectively inserted into the first slot body and the second slot body.

3. The cooling structure according to claim 2, characterized in that: The first water retaining bar and the second water retaining bar are both provided with guiding inclined surfaces for facilitating insertion into the first trough body and the second trough body respectively.

4. The cooling structure according to claim 2, characterized in that: The first trough body or the second trough body is provided with a fool-proof hole.

5. The cooling structure according to claim 1, characterized in that: The liquid inlet and the liquid outlet are both arranged as threaded structures.

6. The cooling structure according to claim 1, characterized in that: The lower side surface of the first step and the upper side surface of the second step are both provided with chamfer structures.

7. The cooling structure according to claim 1, characterized in that: A plurality of protrusions are provided on the outer side surface of the motor housing, and the grooves between adjacent protrusions form liquid cooling channels.

8. The cooling structure according to any one of claims 1 to 7, characterized in that: The cover body is a quadrilateral plate that is bent into a cylindrical shape as a whole. The head end and the tail end of the cover body are respectively connected with the two opposite side surfaces of the first water retaining bar by sealing welding.

9. The cooling structure according to any one of claims 1 to 7, characterized in that: The cover body comprises two semicircular sub-cover bodies, which are arranged opposite to each other, and the head end and the tail end of each sub-cover body are respectively sealed and welded with the first water retaining bar and the second water retaining bar.

10. A motor comprising a motor stator and a motor mover coaxially arranged with the motor stator; characterized in that: It also includes the cooling structure according to any one of claims 1 to 9, wherein the motor stator is fixed to the inner side of the motor housing.

Images