Sealed wiring structure and motor direct-driven rotary table
By using elastic sealing plugs and cover plates in the motor direct drive rotary table, the problem of easy loosening and poor sealing of the cable is solved, and the firm fixation and sealing reliability of the cable is achieved to prevent cable damage and debris from entering.
Patent Information
- Application Number
- CN202422816844.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-19
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-11-19
AI Technical Summary
In the existing motor direct drive rotary table, the coupling force between the cable and the sealing gasket is easily loosened and pulled out during use, resulting in poor sealing effect, and the sharp edges at the outgoing hole of the housing are easily scratched.
The sealing plug is made of elastic deformation material and used with the cover plate. The sealing plug causes radial deformation under the extrusion of the cover plate, achieving a close fit with the cabinet, forming a surface contact seal, and the cable is held tightly to prevent loosening.
It realizes firm fixation of the cable, avoids loosening or pulling off, improves sealing, protects the cable from damage, and ensures that the inside of the motor is not invaded by debris.
Smart Images
Figure CN223156834U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of motors, in particular to a sealed wire routing structure and a motor direct drive turntable. Background Art
[0002] A motor direct drive turntable is a machine tool device in which a motor directly drives a tabletop to drive a workpiece to rotate during processing. Among them, cables such as power cables need to pass through the motor housing and waterproof treatment is required to prevent debris, machining fluid and other sundries from seeping into the motor along the cables during the processing. The prior art usually installs a gasket with a simple planar structure at the cable passing position of the housing, and the gasket is drilled to pass the cable for cable routing. Although this structure can improve the waterproof performance of the motor, there are still the following deficiencies: one is that the sharp edge at the cable outlet hole of the housing is easy to cut the cable, and the other is that the bonding force between the cable and the gasket will decrease during use, resulting in a potential risk that the cable is prone to looseness and pull-off when subjected to external forces. Summary of the Utility Model
[0003] The utility model provides a sealed wire routing structure and a motor direct drive turntable, aiming to solve the technical problem of poor sealing effect in the prior art when using a gasket to realize cable routing.
[0004] The utility model provides a sealed wire routing structure for providing a wire harness to pass through the housing for routing and assembly. The housing has a first mounting hole, and the wire harness includes at least one cable; the sealed wire routing structure includes: a sealing plug with a first end disposed in the first mounting hole, the sealing plug is made of an elastically deformable material and has a wire passing hole corresponding to the cable, and the cable passes through the wire passing hole; a cover plate fixedly connected to the housing, the cover plate has an avoidance hole for exposing the wire passing hole, and the cover plate abuts against the second end of the sealing plug to press the sealing plug in the first mounting hole, so that the sealing plug is closely attached to the first mounting hole and the cable respectively.
[0005] In some preferred embodiments, the end of the first mounting hole away from the cover plate has an annular boss, and the first end of the sealing plug abuts against the annular boss.
[0006] In some preferred embodiments, there is an annular deformation gap between the outer side surface of the first end of the sealing plug and the inner wall of the first mounting hole.
[0007] In some preferred embodiments, the first end of the sealing plug is provided with a chamfer.
[0008] In some preferred embodiments, the cover plate is fixed to the housing through a plurality of adjusting members to adjust the extrusion force of the cover plate on the sealing plug through the adjusting members.
[0009] In some preferred embodiments, the cover plate has a plurality of first fixing holes arranged at intervals around the avoidance hole, and the casing is correspondingly provided with a plurality of second fixing holes. A plurality of adjustment members pass through the first fixing holes and are fixedly connected to the second fixing holes at corresponding positions to fix the cover plate on the casing.
[0010] In some preferred embodiments, the longitudinal section of the first mounting hole is truncated cone-shaped; the sealing plug is a truncated cone structure, and the outer diameter of the second end of the sealing plug is greater than the outer diameter of the first end of the sealing plug.
[0011] In some preferred embodiments, the taper of the sealing plug is smaller than the taper of the first mounting hole; and the outer diameter of the first end of the sealing plug is larger than the diameter of the annular boss.
[0012] The utility model correspondingly discloses a motor direct-driven turntable, comprising a motor and a table top fixedly connected to an output shaft of the motor; the motor has the sealed wiring structure.
[0013] Compared with the prior art, the utility model has the following beneficial effects:
[0014] The sealing wiring structure disclosed by the utility model utilizes the cooperation between the sealing plug and the cover plate, and the cover plate generates an extrusion force on the sealing plug in the axial direction of the first mounting hole of the housing, and the extrusion force compresses the sealing plug in the axial direction of the first mounting hole and then produces radial deformation, so that a reliable sealing cooperation with a surface contact is formed between the sealing plug and the inner wall of the first mounting hole, and at the same time, during the radial deformation of the sealing plug, the inner wall of the wiring hole hugs the cable to achieve sealing. The overall structure is simple, the sealing is reliable, and the cable is firmly fixed and is not easy to loosen or pull off, and the cable is protected from damage by the sealing plug. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a three-dimensional structural schematic diagram of the sealed wiring structure of the utility model.
[0016] Figure 2 It is a schematic diagram of the internal structure of the sealed wiring structure of the utility model.
[0017] Figure 3 yes Figure 2 A partial enlarged view of .
[0018] Figure 4 It is a schematic diagram of the structure of the casing.
[0019] Figure 5 It is a schematic diagram of the three-dimensional structure of the sealing plug.
[0020] Figure 6 It is a schematic diagram of the longitudinal cross-section structure of the sealing plug.
[0021] Figure 7 It is a schematic structural diagram of the cover plate. Specific embodiments
[0022] To further elaborate on the technical means and effects adopted by this application to achieve the predetermined purpose, the following will, in conjunction with the accompanying drawings and preferred embodiments, detail the specific embodiments, structures, features, and their effects according to this application. In the following description, different "one embodiment" or "embodiments" do not necessarily refer to the same embodiment. In addition, the specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.
[0023] The direct-drive turntable of the motor includes a motor and a table surface fixedly connected to the output shaft of the motor. The workpiece to be processed is fixed on the table surface, and the table surface is directly driven by the motor to rotate the workpiece as required to meet the rotation requirements of the workpiece during the processing.
[0024] The motor includes a housing, an output shaft, a stator fixed to the inner wall of the housing, and a rotor fixed to the output shaft. The output shaft, the stator, and the rotor are coaxially arranged. Usually, a wire harness formed by multiple wires such as power lines passes through the bottom shell of the housing and then enters the housing to be electrically connected to the coil winding of the stator.
[0025] The present utility model improves the wire routing structure between the wire harness and the housing, and discloses a sealed wire routing structure to achieve a reliable sealed wire routing assembly between the wire harness and the housing.
[0026] Combined Figures 1 - 7 As shown, only a part of the housing 1 is shown in the drawing, for example, only the bottom shell where the wire harness is routed is shown.
[0027] The housing 1 has a first mounting hole 11. The wire harness includes at least one wire 2. The sealed wire routing structure specifically includes a sealing plug 3 disposed in the first mounting hole 11 and a cover plate 4 that presses the sealing plug 3 in the first mounting hole 11.
[0028] The first end of the sealing plug 3 is disposed in the first mounting hole 11. The sealing plug 3 is made of an elastically deformable material. For example, the sealing plug 3 is made of rubber or silica gel. The sealing plug 3 has a wire routing hole 31 corresponding to the wire 2, and the wire 2 passes through the wire routing hole 31.
[0029] The diameter of the wire through-hole 31 is set to be the same as the diameter of the cable 2. After the cable 2 passes through the wire through-hole 31, the cover plate 4 generates a squeezing force on the sealing plug 3, causing the sealing plug 3 to undergo radial deformation within the first mounting hole 11, thereby enabling the sealing plug 3 to tightly hold the cable 2. On the one hand, it ensures that the cable 2 is not easily loosened or pulled off under the action of external forces. On the other hand, it ensures that sundries such as liquid and dust cannot enter the motor interior through the gap between the cable 2 and the wire through-hole 31, ensuring good sealing performance.
[0030] Furthermore, the number of the wire through-holes 31 can be set according to actual design requirements. In practical applications, in order to make the sealing plug 3 universal, the number of wire through-holes 31 provided on the sealing plug 3 may be more than the number of cables 2. The redundant wire through-holes 31 can be plugged with sealing strips to replace the cables for blocking.
[0031] The cover plate 4 has an avoidance hole 41 for exposing the wire through-hole 31. The cover plate 4 abuts against the second end of the sealing plug 3, pressing the sealing plug 3 in the first mounting hole 11, causing the sealing plug 3 to undergo elastic deformation within the first mounting hole 11. Through the elastic deformation, the sealing plug 3 is closely attached to the inner wall of the first mounting hole 21 and the cable 2 respectively, realizing reliable sealed wiring of the wire harness.
[0032] As Figure 4 shown, the end of the first mounting hole 11 away from the cover plate 4 has an annular boss 12. The first end of the sealing plug 3 abuts against the annular boss 12, and the second end of the sealing plug 3 abuts against the cover plate 4. By abutting against the cover plate 4, the sealing plug 3 can undergo elastic deformation within the first mounting hole 21 to provide wire-sealing for the wire harness.
[0033] There is an annular deformation gap between the outer side surface of the first end of the sealing plug 3 and the inner wall of the first mounting hole 11. After the second end of the sealing plug 3 is subjected to the squeezing force caused by abutting against the cover plate 4, the first end of the sealing plug 3 and the annular boss 12 undergo extrusion deformation and are filled into the deformation gap, which is beneficial to improving the sealing performance between the sealing plug 3 and the first mounting hole 11 by using the deformation gap.
[0034] In some preferred embodiments, a chamfer 32 is provided at the first end of the sealing plug 3, as shown in Figure 5 and Figure 6 shown. The chamfer 32 forms an annular deformation gap between the first end of the sealing plug 3 and the inner wall of the first mounting hole 11.
[0035] In addition, the cover plate 4 is provided with a plurality of first fixing holes 42, and a plurality of second fixing holes 13 are correspondingly provided on the casing 1. The cover plate 4 is fixedly connected to the casing 1 by a plurality of adjusting members 5 respectively passing through the first fixing holes 42 and the second fixing holes 13 at corresponding positions. Moreover, by adjusting the fixing longitudinal depth of the adjusting member 5 in the second fixing hole 13, the pressing force of the cover plate 4 on the sealing plug 3 can be adjusted.
[0036] In order to be able to evenly adjust the pressing force of the cover plate 4 on the sealing plug 3 by using a plurality of the adjusting members 5, a plurality of first fixing holes 42 are arranged at equal intervals around the avoiding hole 41.
[0037] For example, the adjusting member 5 is a screw, and the second fixing hole 13 is a threaded hole.
[0038] The longitudinal section of the first mounting hole 11 is frustum-shaped, as shown in Figure 3 shown. The sealing plug 3 is a frustum structure, as shown in Figure 6 shown. The outer diameter of the second end of the sealing plug 3 is larger than the outer diameter of the first end of the sealing plug 3.
[0039] Furthermore, the taper of the sealing plug 3 is smaller than the taper of the first mounting hole 11; the outer diameter of the first end of the sealing plug 3 is larger than the diameter of the annular boss 12.
[0040] Using the sealing wire routing structure disclosed by the present utility model, the operation process of sealing wire routing assembly for the wire harness is as follows: First, let each cable 2 pass through the avoiding hole 41 of the cover plate 4 in sequence and then insert into the wire routing hole 31 of the sealing plug, and let the cable 2 penetrate through the wire routing hole 31; then, extend the cable 2 with a chamfer at the first end close to the sealing plug into the interior of the casing 1 of the motor from the first mounting hole 21 and electrically connect it to the electrical components inside the motor; secondly, move the sealing plug 3 to the first mounting hole 11, and at the same time retract the overly long cable 2 inside the motor; finally, connect and fix the cover plate 4 and the casing 1 through the adjusting member 5. It can be seen that the wire routing operation is very simple.
[0041] In summary, the principle of the sealing wire routing structure disclosed by the present utility model for providing reliable sealing assembly for the wire harness by the cooperation of the sealing plug 3 and the cover plate 4 is as follows:
[0042] When the sealing plug 3 is placed in the first mounting hole 11, due to the dimensional reasons between the sealing plug 3 and the first mounting hole 11, there is an annular line contact between the sealing plug 3 and the first mounting hole 11 without external force, forming an unstable sealing fit structure. However, when the cover plate 4 generates a squeezing force on the sealing plug 3 towards the annular boss 12, the first end of the sealing plug 3 abuts against the annular boss 12. The squeezing force causes the sealing plug 3 to be compressed axially in the first mounting hole 11 and then generate radial deformation, so that a surface contact is formed between the sealing plug 3 and the inner wall of the first mounting hole 11. There is no gap between the sealing plug 3 and the first mounting hole 11, thus achieving effective sealing. At the same time, during the process of the sealing plug 3 generating radial deformation, the inner wall of the wire routing hole 31 clamps the cable 2 to achieve sealing.
[0043] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A sealed wire routing structure for providing a wire harness to pass through a housing for wire routing and assembly, the housing having a first mounting hole, and the wire harness including at least one cable; characterized in that, The sealed wire routing structure includes: A sealing plug with its first end disposed in the first mounting hole. The sealing plug is made of an elastically deformable material and has a wire routing hole corresponding to the cable. The cable is disposed through the wire routing hole. A cover plate fixedly connected to the housing. The cover plate has an avoidance hole for exposing the wire routing hole. The cover plate abuts against the second end of the sealing plug to press the sealing plug in the first mounting hole, so that the sealing plug is in close fit with the first mounting hole and the cable respectively.
2. The sealed wire routing structure according to claim 1, wherein The end of the first mounting hole away from the cover plate has an annular boss, and the first end of the sealing plug abuts against the annular boss.
3. The sealed wire routing structure according to claim 1, wherein, There is an annular deformation gap between the outer side surface of the first end of the sealing plug and the inner wall of the first mounting hole.
4. The sealed wire routing structure according to claim 1, wherein, The first end of the sealing plug is provided with a chamfer.
5. The sealed wire routing structure according to claim 1, wherein, The cover plate is fixed to the housing through a plurality of adjusting members, so as to adjust the pressing force of the cover plate on the sealing plug through the adjusting members.
6. The sealed wire routing structure according to claim 1, characterized in that, The cover plate has a plurality of first fixing holes spaced around the avoidance hole, and corresponding second fixing holes are provided on the housing. A plurality of adjusting members respectively pass through the first fixing holes and are fixedly connected to the second fixing holes at corresponding positions to fix the cover plate on the housing.
7. The sealed wire routing structure according to claim 2, wherein The taper of the sealing plug is smaller than the taper of the first mounting hole; the outer diameter of the first end of the sealing plug is larger than the diameter of the annular boss.
8. The sealed wire routing structure according to any one of claims 1-7, characterized in that, The longitudinal section of the first mounting hole is frustum-shaped; the sealing plug is a frustum structure, and the outer diameter of the second end of the sealing plug is larger than the outer diameter of the first end of the sealing plug.
9. A direct-drive turntable for a motor, comprising a motor and a tabletop fixedly connected to the output shaft of the motor; characterized in that, The motor has the sealed wire routing structure according to any one of claims 1-8.