CN109428435B

CN109428435B - Cable box and motor

Info

Publication number: CN109428435B
Application number: CN201710775921.9A
Authority: CN
Inventors: 孙瑶
Original assignee: Siemens AG
Current assignee: Siemens AG
Priority date: 2017-08-31
Filing date: 2017-08-31
Publication date: 2020-10-20
Anticipated expiration: 2037-08-31
Also published as: CN109428435A

Abstract

The invention discloses a cable box and a motor. The cable box provided according to one embodiment of the invention comprises: the device comprises a base and a main body arranged on the base. The base is provided with a first opening through which the cable bundle passes. The main body includes: a cavity for receiving the bundle of cables, a second opening for the bundle of cables to extend from the first opening into the cavity, and at least one third opening for at least a portion of the cables of the bundle of cables to extend from the cavity. Wherein, the base has still that a plurality of limit structure of annular arrangement, and the bottom of main part still is provided with a locking structure. The locking structure can prevent the main body from rotating relative to the base when being matched with any one of the limiting structures.

Description

Cable box and motor

Technical Field

The invention relates to the field of motor equipment, in particular to a cable box and a motor.

Background

In application scenarios of various mechanical devices such as motors, cables such as power supply lines and signal lines are generally required to be led out from the devices. Here, the power supply line is, for example, a cable that supplies three-phase alternating current. The signal line is, for example, an encoder cable. In order to protect the cables leading out of the device (e.g. to prevent excessive bending of the cables), the device is usually arranged with a junction box. In some cases, the junction box is fixed to the apparatus, and the direction of the outgoing cable cannot be adjusted.

Disclosure of Invention

In view of the above, the present invention provides a cable box for guiding a cable to a predetermined direction.

According to an embodiment of the present invention, a cable box is provided, including: the device comprises a base and a main body arranged on the base. The base is provided with a first opening through which the cable bundle passes. The main body includes: a cavity for receiving the bundle of cables, a second opening for the bundle of cables to extend from the first opening into the cavity, and at least one third opening for at least a portion of the cables of the bundle of cables to extend from the cavity. Wherein, the base has still that a plurality of limit structure of annular arrangement, and the bottom of main part still is provided with a locking structure. The locking structure can prevent the main body from rotating relative to the base when being matched with any one of the limiting structures.

In one embodiment, each of the plurality of stop structures in the annular arrangement comprises a groove. The detent structure includes a projection adapted to extend into the recess.

In one embodiment of the invention, the base further comprises a bearing arranged in the first opening, the body further has a hollow shaft protruding at the second opening for cooperating with the bearing, the cable bundle being adapted to extend from the hollow shaft into the cavity.

In one embodiment of the invention, the hollow shaft is integrally formed with the bottom of the main body.

In an embodiment of the present invention, the cable box further includes a sealing ring sealing a gap between the hollow shaft and the bearing inner ring, and the sealing ring is sleeved on the hollow shaft.

In one embodiment of the present invention, the locking structure is a rod, a first end of the rod is provided with a circular hole, the rod is sleeved on the hollow shaft through the circular hole, a second end of the rod is provided with a bending part extending upwards, the bending part is attached to the side surface of the main body to prevent the main body from rotating relative to the rod, and the protrusion is arranged at the bottom of the second end of the rod.

In one embodiment of the invention, each of the plurality of retaining structures in the annular arrangement comprises a projection and the locking structure comprises a recess adapted to snap onto the projection.

In one embodiment of the invention, the base is adapted to be secured to an electric motor, and the cable harness includes power supply wires and encoder signal wires.

In one embodiment of the invention, the base is further annularly arranged with a plurality of threaded holes, and the body is further provided with at least one bolt, each of the at least one bolt being adapted to be screwed into a threaded hole aligned with the bolt when the locking structure is mated with any one of the plurality of stop structures.

In one embodiment of the invention, the locking structure is integrally formed with the bottom of the body.

In one embodiment of the invention, the body is further provided with a spherical shell and a hollow rod with a first end being a ball head at each third opening, the ball head being at least partially rotatably arranged in the spherical shell, the ball head being provided with an opening communicating this third opening with the cavity of the hollow rod.

In one embodiment of the invention, the edge of the spherical shell at each third opening is further provided with a plurality of notches, so that the rod portion of the corresponding hollow rod is rotated to any one of the plurality of notches.

In one embodiment of the invention, the body includes a base and a housing that snaps onto the base.

According to an embodiment of the invention, an electric motor is proposed, comprising a cable box according to an embodiment of the invention.

In summary, the cable box according to the present invention can be rotated to a plurality of predetermined rotation angles (angles between the main body and the base) by the engagement of the position limiting structure and the locking structure, so that the cable can be guided toward the predetermined angle. Particularly, each limiting structure corresponds to a preset angle, so that the cable box can avoid the situation that the current rotating angle cannot be determined in the rotating process.

Furthermore, the locking structure is arranged into a rod piece (the first end is sleeved on the hollow shaft, the second end is provided with a bent part attached to the side surface of the main body, and the bottom of the second end is provided with a bulge). Thus, the cable box can extend into the groove of the limiting structure on the base through the adjusting protrusion, and therefore the main body is adjusted to a corresponding rotating angle. In particular, in case of detaching the main body (for example, when replacing the main body or repairing the main body), the cable box may lock the rotation angle of the main body by the lever. In other words, when the main body is mounted again, the cable box can secure the rotation angle before the last detachment, thereby securing the stability of the cable drawing direction.

Further, through setting up spherical shell and the hollow rod that first end is the bulb, the cable box can be in the exit position of cable branch (every third opening promptly), freely adjusts every cable branch direction to greatly improve the direction scope and the regulation degree of freedom that the cable was branched. Further, by providing a plurality of notches in the edge of the spherical shell, the rod portion of the hollow rod can be rotated into one notch. In this way, the cable box can hold the rod section in the indentation, so that the extension direction of the cable branch is maintained in the direction in which the free end of the hollow rod is directed.

Drawings

The foregoing and other features and advantages of the invention will become more apparent to those skilled in the art to which the invention relates upon consideration of the following detailed description of a preferred embodiment thereof with reference to the accompanying drawings, in which:

FIG. 1 illustrates a schematic view of an application scenario of a cable box according to some embodiments of the present invention;

FIG. 2 shows a block diagram of the cable enclosure of FIG. 1;

FIG. 3 illustrates a schematic view of an application scenario of a cable box according to some embodiments of the present invention;

FIG. 4 shows a schematic view of the cable enclosure of FIG. 3;

FIG. 5 shows an exploded view of the cable enclosure of FIG. 4;

FIG. 6 shows a schematic view of the cable enclosure of FIG. 3 rotated 90 degrees; and

fig. 7 shows a schematic view of the cable cassette of fig. 3 with the hollow bar raised upwards.

Wherein the reference numbers are as follows:

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more clear, the present application is further described in detail by referring to the following examples.

Fig. 1 illustrates a schematic view of an application scenario of a cable box according to some embodiments of the present invention. Fig. 2 shows a block diagram of the cable box of fig. 1. As shown in fig. 1 and 2, the cable box 1 is adapted to be mounted on an electric motor 2. The cable box 1 includes a base 11 and a main body 12 provided on the base 11. The base 11 is provided with a first opening 111 through which the cable bundle 21 passes. Depending on the cable design of the electric motor 2, the cable bundle 21 may comprise at least one cable. For example, the cable harness 21 includes a power supply line and an encoder signal line, but is not limited thereto. The body 12 comprises a cavity (not shown in fig. 1) for accommodating the cable bundle 21, a second opening 121 for the cable bundle 21 to extend from the first opening 111 into the cavity, and at least one third opening for at least a part of the cables of the cable bundle 21 to extend from the cavity 121. The cable box 2 in fig. 1 includes the third openings 122 and 123, but is not limited thereto.

In addition, the base 11 is also annularly provided with a plurality of limit structures. The bottom of the body 12 is also provided with a locking structure. Thus, the locking structure, when engaged with a stop structure, prevents the body 12 from rotating relative to the base 11.

In some embodiments, each of the retention features is a groove, such as

grooves

112 and 113 identified in FIG. 2. The position limiting structure on the base 11 may be configured to be arranged in units of a predetermined angle. Specifically, the base 11 may be configured to arrange a stopper structure on one circumference for every rotation through a predetermined angle centering on the first opening 111. The predetermined angle is, for example, 15 degrees or 30 degrees, etc., but is not limited thereto. The detent structure includes a projection (not shown in fig. 2) adapted to extend into a recess of either of the stop structures. Thus, when the body 12 is rotated relative to the base 11 to align the projection with and extend into a recess of a stop formation, the body 12 cannot be rotated relative to the base 11. In one embodiment, the locking structure may be integrally formed with the bottom of the body 12. In yet another embodiment, the locking structure may be provided as a component of the body 12.

In still other embodiments, each of the retention structures may be a protrusion (not shown). Accordingly, the locking structure includes a recess adapted to snap onto a projection of a retaining structure. In addition, the position limiting structure in the present embodiment may also be provided to be arranged in units of a predetermined angle.

In summary, the cable box 12 according to the present invention can be rotated to a plurality of predetermined rotation angles (angles between the main body and the base) by the engagement of the position limiting structure and the locking structure, so that the cable can be guided toward the predetermined angle. In particular, each limiting structure corresponds to a predetermined angle, so that the cable box 12 can avoid the situation that the current rotation angle cannot be determined during the rotation process.

Fig. 3 illustrates an application scenario diagram of a cable box according to some embodiments of the present invention. Fig. 4 shows a schematic view of the cable box of fig. 3. Fig. 5 shows an exploded view of the cable box of fig. 4. The cable box as in fig. 3 is an improvement over the embodiment of fig. 1. The cable box further comprises a bearing 114 arranged in the first opening 111. The main body 12 also has a hollow shaft extending therefrom at the second opening for engaging the bearing 114. In this way, the cable bundle 21 may extend from the hollow shaft 124 into the cavity within the body 12. In one example, the hollow shaft 124 may be integrally formed with the bottom of the body 12. In yet another embodiment, the hollow shaft 124 may be provided as a removable one-piece assembly. In this way, by arranging the hollow shaft 124, the cable box can be rotated more smoothly, so that the process of adjusting the rotation angle of the cable box is more convenient. In addition, the base 11 further includes a sealing ring (not shown) for sealing a gap between the hollow shaft 124 and the inner ring of the bearing 114, which is fitted over the hollow shaft 124. In this way, by disposing the seal ring, the cable box can prevent contaminants (e.g., liquids, etc.) from entering the motor interior from the gap between the bearing 114 and the hollow shaft 124.

In addition, the base 11 may also be annularly provided with a plurality of threaded holes (not shown), and the body 12 may also be provided with at least one bolt. Each bolt is adapted to be threaded into a threaded bore aligned with the bolt when the locking structure is mated with one of the plurality of stop structures. As shown in fig. 4 and 5, the body 12 may include a base 125 and a housing 126 that snaps onto the base. In addition, the main body 12 may be integrally formed, which is not limited in the present application.

Alternatively, the locking structure may be provided as a lever 129. The first end of the rod member 129 is provided with a circular aperture 1291. Thus, the rod 129 can be sleeved on the hollow shaft 124 through the round hole 1291. The second end of the rod 129 has an upwardly extending bend 1292. Bend 1292 may abut a side of body 12 to prevent rotation of body 12 relative to rod 129. Projection 1293 is disposed at the bottom of the second end of rod member 129. Thus, the cable box can be inserted into a recess of a limiting structure on the base 11 through the adjusting protrusion 1293, so as to adjust the main body 12 to a corresponding rotation angle. In particular, in case the body is removed (e.g. when replacing or repairing the body), the cable box may be locked in rotation angle of the body by the lever 129. In other words, when the main body is mounted again, the rotation angle before the last detachment can be secured, so that the stability of the cable drawing direction can be secured.

In addition, the main body 12 is further provided with a spherical shell and a hollow rod with a first end being a ball head at each third opening. For example, the third opening 123 in FIG. 5 is surrounded by a spherical shell 128 and a hollow shaft 127. At least a portion of the ball head 1271 is rotatably disposed within the ball housing 128. The ball 1271 is provided with an opening (not shown) that communicates the third opening 123 with the interior of the hollow shaft 127. In this way, at least a portion of the cable (which may also be referred to as a branch of the cable) extends out of the body 12 from the third opening 123, through the hollow shaft 127. Thus, by providing the combination of the spherical shell and the hollow rod, the cable box can freely adjust the branching direction of each cable at the outlet position of the cable branch (i.e., each third opening), thereby greatly improving the direction range and adjustment freedom of the cable branch. In addition, a plurality of notches may be provided on the edge of the spherical shell at each third opening of the main body 12. In this way, the shank of the hollow shank can be rotated into a recess. Here, the spherical shell is provided as an elastic material, and the indentation may be provided as a constriction of the open top edge. In this way, the cable box can hold the rod section in the indentation, so that the extension direction of the cable branch is maintained in the direction in which the free end of the hollow rod is directed. For example, fig. 6 shows a schematic view of the cable box of fig. 3 rotated 90 degrees. Fig. 7 shows a schematic view of the cable cassette of fig. 3 with the hollow bar raised upwards.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A cable enclosure, comprising:

a base (11) provided with a first opening (111) through which a cable harness (21) passes;

a body (12) provided on the base (11), comprising: a cavity for accommodating the cable bundle (21), a second opening (121) for the cable bundle (21) to extend from the first opening (111) into the cavity, and at least one third opening (122, 123) for at least a part of the cables of the cable bundle (21) to extend from the cavity, the body (12) further extending at the second opening (121) with a hollow shaft (124),

wherein the base (11) is further annularly provided with a plurality of limiting structures, the bottom of the main body (12) is further provided with a locking structure, the locking structure can prevent the main body (12) from rotating relative to the base (11) when being matched with any one of the limiting structures,

the locking structure is a rod piece (129), a first end of the rod piece (129) is provided with a round hole (1291), the rod piece (129) is sleeved on the hollow shaft (124) through the round hole (1291), a second end of the rod piece (129) is provided with a bending part (1292) extending upwards, and the bending part (1292) abuts against the side surface of the main body (12) to prevent the main body (12) from rotating relative to the rod piece (129).

2. The cable enclosure of claim 1, wherein each of the plurality of annularly arranged retention structures includes a recess (112, 113), and wherein the locking structure includes a projection (1293) adapted to extend into the recess.

3. The cable enclosure according to claim 2, characterized in that the base (11) further comprises a bearing (114) arranged in the first opening, the body (12) further protruding at the second opening (121) a hollow shaft (124) cooperating with the bearing (114), the cable bundle (21) being adapted to protrude from the hollow shaft (124) into the cavity.

4. The cable enclosure according to claim 3, wherein the hollow shaft (124) is integrally formed with a bottom of the main body (12).

5. The cable enclosure according to claim 3, further comprising a sealing ring sealing a gap between the hollow shaft (124) and an inner ring of the bearing (114), which is fitted over the hollow shaft (124).

6. The cable enclosure according to claim 3, characterized in that the projection (1293) is provided at the bottom of the second end of the lever (129).

7. The cable enclosure of claim 1, wherein each of the plurality of retention structures of the annular arrangement includes a protrusion, and wherein the locking structure includes a groove adapted to snap onto the protrusion.

8. The cable enclosure of claim 1, wherein the base is adapted to be secured to an electric motor, and wherein the cable harness includes power supply wires and encoder signal wires.

9. The cable enclosure according to claim 1, wherein the base is further annularly arranged with a plurality of threaded holes, the body further being provided with at least one bolt, each of the at least one bolt being adapted to be threaded into a threaded hole aligned with the bolt when the locking structure is mated with any one of the plurality of retention structures.

10. The cable enclosure of claim 1, wherein the locking structure is integrally formed with the bottom of the body.

11. The cable enclosure according to claim 1, wherein the body is further provided with a ball housing (128) and a hollow shaft (127) terminating in a ball head (1271) at each third opening, the ball head (1271) being at least partially rotatably disposed within the ball housing (128), the ball head (1271) being provided with an opening communicating the third opening with the interior of the hollow shaft (127).

12. The cable cassette according to claim 11, wherein the edge of the spherical shell at each third opening is further provided with a plurality of indentations to allow the shaft portion (1272) of the respective hollow bar to rotate to any one of the plurality of indentations.

13. The cable enclosure of claim 1, wherein the body (12) includes a base (125) and a housing (126) that snaps over the base.

14. An electric motor, characterized in that it comprises a cable box according to any one of claims 1-13.