CN214543933U

CN214543933U - Driving device

Info

Publication number: CN214543933U
Application number: CN202120055674.7U
Authority: CN
Inventors: 不公告发明人
Original assignee: Zhejiang Sanhua Automotive Components Co Ltd
Current assignee: Zhejiang Sanhua Automotive Components Co Ltd
Priority date: 2021-01-08
Filing date: 2021-01-08
Publication date: 2021-10-29
Anticipated expiration: 2031-01-08

Abstract

The driving device comprises a shell, a motor and a lead, wherein the shell comprises a bottom wall part, the motor comprises a shell, the shell of the motor comprises an end plate positioned on one axial side of the motor, and the shell is provided with a flange part protruding out of the end plate; the shell comprises a bulge part which is protruded out of the bottom wall part; the lead comprises a first section, a second section and a bending section positioned between the first section and the second section, the end part of the first section is connected with the motor, and the second section of the lead extends towards the direction opposite to the direction of the flange part protruding out of the end plate; the bending section is matched with the protruding part, and the part of the protruding part corresponding to the bending section is a smooth curved surface. So that in the installation process or the vibration process of wire, the bulge makes the bending section separate with flange portion, and restricts the contact site of wire and bulge in rounding off curved surface department to reduce the risk that the wire is cut by flange portion sharp-pointed part.

Description

Driving device

Technical Field

The utility model relates to a driving device.

Background

The driving device is widely used in various devices requiring driving, such as a fluid control valve and the like. The wires of the motor, which are the power take-off inside the drive, may be cut by the relatively sharp edge portions during the mounting process or during vibration, with the risk of damage to the wires.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a drive arrangement, it has the structure that prevents the wire and be cut.

A driving device comprises a shell, a motor and a lead, wherein the shell is provided with an accommodating cavity, the motor and the lead are accommodated in the accommodating cavity, the shell comprises a bottom wall part, the motor comprises a shell, the shell of the motor comprises an end plate positioned on one axial side of the motor, and the shell is provided with a flange part protruding out of the end plate; the shell comprises a bulge part which is protruded out of the bottom wall part; the lead comprises a first section, a second section and a bent section positioned between the first section and the second section, the end part of the first section is connected with the motor, and the second section of the lead extends towards the direction opposite to the direction of the flange part protruding out of the end plate; the bending section is matched with the protruding part, and the part of the protruding part corresponding to the bending section is a smooth curved surface.

In the driving device provided by the scheme, the bending section is matched with the protruding part, and the part of the protruding part corresponding to the bending section is a smooth curved surface, so that in the installation process or the vibration process of the lead, the protruding part enables the bending section to be separated from the flange part, and the contact part of the lead and the protruding part is limited at the smooth curved surface, and the risk that the lead is cut by the sharp part of the flange part is reduced.

Drawings

Fig. 1 shows an exploded view of a drive device according to an embodiment of the invention;

fig. 2 shows a perspective view of the main body part of the drive device shown in fig. 1;

FIG. 3 shows a perspective view of the motor and wires of the drive of FIG. 1;

FIG. 4 shows a schematic top view of the body portion, motor and wires of FIG. 1;

FIG. 4a shows an enlarged partial schematic view of the body portion, motor and wires of FIG. 4;

FIG. 5 shows a schematic partial cross-sectional view of the body portion, motor and lead shown in FIG. 4 taken along line A-A;

FIG. 6 is a schematic partial cross-sectional view of the body portion, motor and lead shown in FIG. 4 taken along line B-B;

fig. 7 shows a schematic top view of another embodiment of the present invention;

figure 8 shows a perspective view of the main body of the drive device of figure 7;

FIG. 9 shows a schematic partial cross-sectional view of the drive arrangement of FIG. 7 taken along line E-E;

fig. 10 shows a schematic cross-sectional view of the drive device of fig. 7 along the line F-F.

Detailed Description

The embodiments are described in detail below with reference to the accompanying drawings.

As shown in fig. 1 and 2, the housing includes the end cap portion 4 and the main body portion 1, and the main body portion 1 includes a side wall portion 141 and a bottom wall portion 142, the side wall portion 141 being located at an outer peripheral edge of the bottom wall portion 142, and the side wall portion protruding from one side surface of the bottom wall portion 142 and surrounding the bottom wall portion 142. The side wall 141 and the bottom wall 142 may be perpendicular or substantially perpendicular. The housing is provided with an accommodating cavity 6, and the motor 2, the lead 3 and the circuit board 5 are accommodated in the accommodating cavity 6 of the housing, so that the housing can reduce the corrosion of the motor 2, the lead 3 and the circuit board 5 to fluid outside the housing or the damage of objects outside the housing.

As shown in fig. 1 and 3, the motor 2 includes a rotating shaft 23 and a housing 21 located outside the motor 2, the housing 21 of the motor 2 includes an end plate 211 located on one side of the motor 2 in the axial direction, the housing 21 has a flange portion 213 protruding from the end plate 211, and the end plate 211 is perpendicular or substantially perpendicular to the axis of the rotating shaft 23. The motor 2 further comprises a boss 26 protruding axially from the end plate 211, and the boss 26 may be cylindrical. A flange portion 213 extends axially from the end plate 211 of the housing 21 remote from the shaft 23. The flange portion 213 has a recess 214 formed therein.

As shown in fig. 2 and 3, the main body 1 further includes a mounting seat 12 and a protruding portion 11, and the motor 2 is limited or fixed on the mounting seat 12. The mounting seat 12 is plate-shaped, the extending direction of the mounting seat is perpendicular to the axis of the motor rotating shaft, the axial direction of the motor 2 is parallel to the bottom wall part 142 of the main body part 1, and the mounting seat 12 is connected with the bottom wall part 142 and protrudes out of the bottom wall part 142. The top end of the mounting seat 12 has a notch portion 122, and the boss 26 of the motor 2 is matched with the notch portion 122, so that the end of the motor 2 is limited. The protruding portion 11 protrudes from the bottom wall portion 142, and the protruding portion 11 extends in a direction perpendicular or substantially perpendicular to the bottom wall portion 142. In the present embodiment, the protruding portion 11 is in a strip shape, the protruding portion 11 can be integrally formed with the main body portion 1, the structure of the protruding portion 11 is simple, the number of process steps can be reduced, the number of parts can be reduced, and the overall cost of the driving device can be saved. The protruding portion 11 and the mounting seat 12 can be made of plastic, and the protruding portion 11 and the mounting seat 12 can be integrally injection-molded, so that the risk of breakage of the protruding portion 11 during demolding can be relatively reduced. In other embodiments, the protrusion 11 may be made of other materials, such as metal, and the protrusion 11 may be manufactured separately from the main body 1 of the housing, the housing has a groove recessed in the bottom wall 142, and at least a portion of the protrusion 11 is inserted into the groove and is in interference fit with an inner wall of the groove.

The body 1 further includes a rib 121, and the rib 121 protrudes from the mounting seat 12. At least a portion of the rib 121 extends into a groove 214 formed in the motor, and an inner wall of the groove 214 may be in clearance fit or transition fit with an outer wall of the rib 121. The ribs 121 and grooves 214 form interlocking means to prevent rotation of the motor 2 relative to the body 1.

As shown in fig. 3, the lead 3 includes a first section 31, a second section 32 and a bent section 33 between the first section and the second section, the end of the second section 32 can be directly or indirectly connected with the circuit board, and the end of the first section 31 is electrically connected with the connector 22 of the motor 2. The first segment 31 or the bent segment 33 of the lead 3 may pass through the extension surface 215 of the flange portion 213, the second segment 32 of the lead may extend in a direction opposite to the direction in which the flange portion 213 protrudes from the end plate 211, and the lead 3 may turn around the flange portion 213. It should be noted that the phrase "the extending direction is opposite" does not mean that the extending direction of the second segment 32 of the lead 3 is parallel to the extending direction of the flange portion 213, but means that the extending direction of the second segment 32 is at an obtuse angle to the extending direction of the flange portion 213, so that the bent segment 33 tends to approach the flange portion 213 when the second segment 32 is pulled. The drive means may comprise a plurality of wires 3 electrically connected to the motor 2.

As shown in fig. 4, 4a and 5, the bent portion 33 is engaged with the protruding portion 11, and a portion of the protruding portion 11 corresponding to the bent portion 33 is a round curved surface 111. At least a portion of the protruding portion 11 is located between the flange portion 213 and the wire 3 in the extending direction of the flange portion 213 and the projection of this portion on the end plate 211 covers the flange portion 213, so that during the installation process or the vibration process of the wire 3, the protruding portion 11 separates the bent section 33 from the sharp flange portion 213 and restricts the contact portion of the wire 3 and the protruding portion 11 at the smoothly curved surface, and the risk of the wire 3 being cut by the flange portion 213 can be reduced. In the present embodiment, the cross section of the boss 11 is a rounded rectangle. In other embodiments, the cross section of the convex portion 11 may be circular, elliptical, fan-shaped, or other shapes having smooth curves.

A gap is formed between the protruding portion 11 and the sidewall portion 141, the width of the gap is greater than the cross-sectional width of the wire 3, and the bent portion 33 of the wire 3 is accommodated in the gap.

As shown in fig. 6, in the present embodiment, the height of the protruding portion 11 protruding from the bottom wall portion is a, the height of the motor 2 protruding from the bottom wall portion is b, and a is greater than or equal to 0.4b and less than or equal to b, so that the risk of the wire 3 being cut by the flange portion is relatively small when the protruding portion 11 occupies a small space. If the protrusion 11 is too low, the lead 3 may be out of the protection range of the protrusion 11 during installation. If the height of the protruding portion 11 exceeds the height of the motor 2, the height space occupied by the protruding portion 11 becomes too large, which results in an increase in the size of the housing, and is not favorable for miniaturization of the driving device.

As shown in fig. 7 to 10, in another embodiment, the boss 11 is plate-shaped and connected to the bottom wall portion 142, and the boss 11 extends in a direction perpendicular to the end plate 211. At least a portion of the protruding portion 11 protrudes from the outer surface of the end plate 211, and the height of the protruding portion protruding from the end plate 211 is greater than the height of the flange portion 213 protruding from the end plate 211. So that the bent section 33 disposed at the wire 3 is not cut by the flange portion 213 of the motor 2. Note that at least a part of the boss portion 11 is located between the flange portion 313 and the lead wire 3 in the extending direction of the flange portion 213, and "between" here does not mean that the projection of this part on the end plate 211 covers the flange portion 213. In addition, since the boss portion 11 is flat, its cross-sectional area is large, so that the risk of breakage of the boss portion 11 at the time of mold release can be relatively reduced.

The accommodating groove 15 is formed between the protruding portion 11 and the sidewall portion 141, the width of the accommodating groove 15 may be greater than the cross-sectional width of the wire 3, at least a portion of the second section 32 of the wire is located in the accommodating groove 15, and the accommodating groove 15 may limit the position of the second section 32 of the wire. When the driving device is provided with a plurality of wires 3 electrically connected with the motor 2, the accommodating groove 15 can be used for bundling the plurality of wires, at the moment, the plurality of wires 3 can be all wound around from the same side of the motor 2, the space occupied by the plurality of wires 3 can be reduced, and meanwhile, the risk of damage caused by the fact that the wires 3 are separated from the preset position can be reduced.

Claims

1. A driving device comprises a shell, a motor and a lead, wherein the shell is provided with an accommodating cavity, and the motor and the lead are accommodated in the accommodating cavity; the shell comprises a bulge part which is protruded out of the bottom wall part;

the lead comprises a first section, a second section and a bent section positioned between the first section and the second section, the end part of the first section is connected with the motor, and the second section of the lead extends towards the direction opposite to the direction of the flange part protruding out of the end plate;

the bending section is matched with the protruding part, and the part of the protruding part corresponding to the bending section is a smooth curved surface.

2. The drive device according to claim 1, wherein the housing includes an end cover portion and a main body portion, the main body portion including the bottom wall portion, the main body portion further including a side wall portion located at a peripheral edge of the bottom wall portion and surrounding the bottom wall portion, the projecting portion and the side wall portion projecting from the bottom wall portion and extending in a direction perpendicular to the bottom wall portion;

a gap is formed between the bulge part and the side wall part, the width of the gap is larger than the width of the cross section of the lead, and the bent section of the lead is accommodated in the gap; the bulge part and the bottom wall part are integrally formed in an injection molding mode;

the motor includes a connector located on the end plate, with which a first section of the wire is electrically connected.

3. The drive device according to claim 2, wherein at least a part of the projection is located between the flange portion and the lead wire in the extending direction of the flange portion and a projection of this part on the end plate covers the flange portion.

4. The drive of claim 2, wherein at least a portion of the projection projects above the outer surface of the end plate at a greater height than the flange projects above the end plate.

5. The drive device according to claim 4, wherein the boss portion is plate-shaped and connected to the bottom wall portion, the boss portion extending in a direction perpendicular to the end plate; an accommodating groove is formed between the protruding portion and the side wall portion, the width of the accommodating groove is larger than the width of the cross section of the wire, and at least one part of the second section of the wire is located in the accommodating groove.

6. The drive device according to any one of claims 2 to 5,

the shell is provided with a mounting seat, the motor is limited or fixed on the mounting seat, the mounting seat and the bulge are integrally arranged, the axial direction of the motor is parallel to the bottom wall part of the main body part, an end plate of the motor is perpendicular to a rotating shaft of the motor, the height of the bulge protruding out of the bottom wall part is a, the height of the motor protruding out of the bottom wall part is b, and a is more than or equal to 0.4b and less than or equal to b; the cross section of the bulge is in a round corner rectangle shape.

7. The drive device according to any one of claims 2 to 5, wherein the boss portion is manufactured separately from the housing, the housing having a recess recessed in a surface of a bottom wall portion, at least a portion of the boss portion being inserted into the recess and interference-fitted with an inner wall of the recess.

8. The drive unit according to any one of claims 2 to 5, wherein the housing has a mounting seat, the mounting seat has a plate shape, the mounting seat is connected to and protrudes from the bottom wall portion, a top end of the mounting seat has a notch portion, the motor further includes a boss protruding axially from the end plate, and the boss is engaged with the notch portion; the main body part further comprises a rib, the flange part is provided with a groove, the rib protrudes out of the mounting seat, at least one part of the rib extends into the groove, and the inner wall of the groove can be in clearance fit with the outer wall of the rib.

9. The drive of claim 6, wherein the housing has a mounting seat, the mounting seat having a plate shape, the mounting seat being connected to and protruding from the bottom wall portion, a top end of the mounting seat having a notch portion, the motor further comprising a boss protruding axially from the end plate, the boss being engaged with the notch portion; the main body part further comprises a rib, the flange part is provided with a groove, the rib protrudes out of the mounting seat, at least one part of the rib extends into the groove, and the inner wall of the groove can be in clearance fit with the outer wall of the rib.

10. The drive of claim 7, wherein the housing has a mounting seat, the mounting seat having a plate shape, the mounting seat being connected to and protruding from the bottom wall portion, a top end of the mounting seat having a notch portion, the motor further comprising a boss protruding axially from the end plate, the boss being engaged with the notch portion; the main body part further comprises a rib, the flange part is provided with a groove, the rib protrudes out of the mounting seat, at least one part of the rib extends into the groove, and the inner wall of the groove can be in clearance fit with the outer wall of the rib.

11. A drive arrangement as claimed in any one of claims 2 to 5 wherein said drive arrangement includes a plurality of conductors electrically connected to said motor, said conductors being routed around the same side of said motor.

12. The drive of claim 6, wherein said drive includes a plurality of wires electrically connected to said motor, said plurality of wires passing around the same side of said motor.

13. The drive of claim 7, wherein said drive includes a plurality of wires electrically connected to said motor, said plurality of wires passing around the same side of said motor.

14. The drive of claim 8, wherein said drive includes a plurality of wires electrically connected to said motor, said plurality of wires passing around the same side of said motor.

15. The drive of claim 9, wherein said drive includes a plurality of wires electrically connected to said motor, said plurality of wires passing around the same side of said motor.

16. The drive of claim 10, wherein said drive includes a plurality of wires electrically connected to said motor, said plurality of wires passing around the same side of said motor.