Motor driver device

Abstract

The utility model provides a motor driver device, and belongs to the technical field of electric furniture. The problems that an existing lifting motor turbine is common in self-locking capacity and poor in load intensity are solved. The motor driver device comprises a motor body and a turbine shell connected to the upper portion of the motor body, a connecting shaft with an inner hexagonal hole formed in the center is further arranged in the middle of a turbine, the pressure angle of meshing teeth of a turbine worm is 5 degrees, a through shaft hole is formed in the middle of the turbine shell, and the turbine shell comprises a body shell and a shell cover plate. Mounting seats for mounting bearings are arranged at the shaft holes of the main body shell and the shell cover plate, the two ends of the connecting shaft respectively extend out of the shaft holes of the main body shell and the shell cover plate, the two ends of the connecting shaft are sleeved with the bearings, the connecting shaft is sleeved with inner rings of the bearings, and outer rings of the bearings are connected into the mounting seats. Two sides directly support the turbine, so that the load strength of the whole structure is enhanced, and the self-locking force of the turbine and the worm is greatly increased.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric furniture and relates to a motor driver device. Background Art

[0002] In the prior art, the lifting motor of the electric lifting table is mostly connected to the lifting table body through connecting parts such as screws and bolts, and the lifting motor is in direct contact with the lifting table body.

[0003] The upper part of the lifting motor is also connected to a housing for installing a turbine and a worm. Generally, the housing is symmetrically designed and is composed of two identical housings to form a housing with an internal cavity. A circular hole is opened on each of the two housings for installing bearings. In other words, bearings are installed on both sides of the inside of the housing for connecting the turbine. However, the contact between such bearings and the housing and turbine is small, resulting in poor load-bearing capacity of the turbine.

[0004] A hexagonal hole is also provided in the middle of the turbine, which is used to connect to the external lift table transmission screw assembly. The load of the entire table frame is on the turbine, however, the general pressure angle of the turbine and worm meshing teeth is 20°, and such a turbine and worm lifting motor has the defect of sliding down under a load of 80 kg. In other words, the self-locking force of the turbine and worm of the existing 80 kg upgrade motor is relatively general, and the load strength of the entire upgrade motor is poor. Utility Model Content

[0005] The purpose of the utility model is to provide a motor driver device with compact structure and strong stability in view of the above problems existing in the prior art.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A motor drive device comprises a motor body and a turbine housing connected to the upper part of the motor body, a turbine and a worm are connected in the turbine housing, and the turbine and the worm are meshed with each other, and the middle part of the turbine also has a connecting shaft with a hexagonal hole at the center, characterized in that the pressure angle of the turbine and worm meshing teeth is 5 degrees, and a through axial hole is opened in the middle part of the turbine housing, and the turbine housing comprises a main housing and a housing cover plate, and the axial holes of the main housing and the housing cover plate are both provided with connecting sleeves for installing bearings, and the two ends of the connecting shaft extend out of the axial holes of the main housing and the housing cover plate respectively, and the two ends of the connecting shaft are sleeved with bearings, the inner ring of the bearing is sleeved on the connecting shaft, and the outer ring is connected to the connecting sleeve.

[0008] The turbine housing consists of a main housing and a housing cover. Two interconnected chambers are formed inside the main housing. A through axial hole is opened in the middle of the turbine housing. The chamber with the axial hole is used to install the turbine, and the other chamber is used to install the worm. The turbine and the worm are meshed with each other, and the pressure angle of the turbine and worm meshing teeth is 5 degrees, which can increase the load and bearing capacity.

[0009] There is also a connecting sleeve at the shaft hole of the main shell and the shell cover, and the connecting sleeve is used to install the bearing. The connecting sleeve and the shaft hole are on the same axial line. Two bearings are provided, and the two bearings are respectively installed between the shell cover and the connecting shaft, and between the main shell and the connecting shaft. The turbine is connected between the main shell and the shell cover. Bearings are installed on both sides to limit and fix the turbine, and at the same time support the turbine, thereby enhancing the load strength of the entire structure. The turbine is directly supported on both sides, which greatly increases the self-locking force of the turbine and the worm.

[0010] In the above-mentioned motor drive device, connecting ring grooves are also opened on both sides of the turbine, and both ends of the connecting shaft extend out of the turbine connecting ring groove, and the extended part is a connecting part, and the connecting part also has a gap step near the connecting ring groove, and the bearing sleeve is arranged on the connecting part, and the side surface of the bearing abuts against the surface of the gap step.

[0011] Connecting ring grooves are also provided on both sides of the turbine, and the turbine is installed at the connecting ring grooves on both sides of the turbine, which are located at the casing cover plate, and the bearing sleeve is arranged at the connecting part of the connecting shaft, one side of the bearing abuts against the gap step, and the other side abuts against the casing cover plate, which is located at the main casing, and the bearing sleeve is arranged at the connecting part of the connecting shaft, one side of the bearing abuts against the gap step, and the other side abuts against the main casing, so that the bearings are firmly fixed at both ends of the connecting shaft.

[0012] In the above-mentioned motor driver device, the connecting sleeve at the shell cover is a reinforcing sleeve 1, and the reinforcing sleeve 1 is integrally formed with the shell cover plate. The inner wall of the reinforcing sleeve also has a protruding limiting ring 1. The inner diameter size of the reinforcing sleeve 1 matches the outer diameter size of the bearing, and the diameter size of the limiting ring 1 is smaller than the diameter size of the bearing.

[0013] The reinforcing sleeve 1 is integrally formed with the shell cover plate and has high strength. The bearing can be embedded in the reinforcing sleeve 1, that is, the inner ring of the bearing located at the shell cover plate is connected to the connecting part, and the outer ring of the bearing is embedded in the reinforcing sleeve 1. One side of the bearing abuts against the limiting ring 1, and the other side abuts against the gap step surface of the connecting part, so that the bearing is limited between the gap step and the limiting ring 1.

[0014] In the above-mentioned motor driver device, the connecting sleeve at the main shell is a reinforcing sleeve 2, and the reinforcing sleeve 2 is integrally formed with the main shell. The inner wall of the reinforcing sleeve also has a protruding limiting ring 2. The inner diameter size of the reinforcing sleeve 2 matches the outer diameter size of the bearing, and the diameter size of the limiting ring 2 is smaller than the diameter size of the bearing.

[0015] The reinforcing sleeve 2 is integrally formed with the main shell and has high strength. The bearing can be embedded in the reinforcing sleeve 2, that is, the inner ring of the bearing located at the main shell is connected to the connecting part, and the outer ring of the bearing is embedded in the reinforcing sleeve 2. One side of the bearing abuts against the limiting ring 2, and the other side abuts against the gap step surface of the connecting part, so that the bearing is limited between the gap step and the limiting ring 2.

[0016] In the above-mentioned motor driver device, the main shell body is also provided with connecting columns on the four edges thereof, the connecting columns are provided with internal threads, and the shell cover is provided with connecting rings matching the connecting columns, and the shell cover is connected to the main shell body by inserting screws or screws in the connecting rings and the connecting columns.

[0017] The shell cover is buckled on the main shell, and the opening of the connecting ring on the shell cover is aligned with the internal threaded hole of the connecting column on the main shell. Then long screws or bolts are connected to the connecting ring and the connecting column to connect the shell cover and the main shell together.

[0018] In the above-mentioned motor drive device, the turbine housing is die-casted using aluminum alloy material.

[0019] The turbine housing made of die-cast aluminum alloy has high strength.

[0020] In the above-mentioned motor drive device, the connecting shaft and the turbine are integrally formed.

[0021] High strength and good durability.

[0022] In the above-mentioned motor driver device, the end of the main body shell also has a mounting seat for connecting the motor body.

[0023] The mounting seat is also provided with screw holes or bolt holes, and the main body shell and the motor body are connected together by screws or bolts.

[0024] Compared with the prior art, the turbine housing of the lifting motor assembly is die-casted from aluminum alloy material. The turbine housing is divided into a main housing for installing a turbine and a worm and a housing cover connected to the main housing. The housing cover is connected to the main housing by connecting long screws or bolts on the connecting ring and the connecting column. The bearings on both sides of the connecting shaft can be respectively limited and connected between the gap step and the limiting ring 2 at the main housing, and between the gap step and the limiting ring 1 at the housing cover. This can increase the connection stability between the bearing, the turbine, and the housing, increase the contact area between the bearing and the turbine connecting shaft, and between the bearing and the housing, increase the overall connection stability, thereby improving the overall load capacity, not easy to wear, and having high strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a motor driver device.

[0026] Figure 2 The present invention is a structural schematic diagram of a motor driver device with a housing cover removed.

[0027] Figure 3 The present invention is a schematic diagram of the structure of a turbine in a motor drive device.

[0028] Figure 4 The present invention is a schematic structural diagram of the connection between a main body shell and a motor body in a motor driver device.

[0029] Figure 5 The present invention is a schematic structural diagram of a main body housing connected to a bearing in a motor driver device.

[0030] Figure 6 The present invention is a schematic diagram of the structure of a housing cover plate mounting a bearing in a motor driver device.

[0031] Figure 7 The present invention is a schematic structural diagram of a main body casing on which a turbine is installed in a motor drive device.

[0032] In the figure, 1. motor body; 2. turbine housing; 3. turbine; 4. worm; 5. connecting shaft; 6. shaft hole; 7. main housing; 8. housing cover; 9. bearing; 10. connecting sleeve; 11. connecting ring groove; 12. connecting part; 13. gap step; 14. reinforcing sleeve one; 15. reinforcing sleeve two; 16. limiting ring two; 17. connecting column; 18. connecting ring; 19. mounting seat. DETAILED DESCRIPTION

[0033] like Figure 1 , Figure 2 , Figure 3 and Figure 4 , Figure 5 , Figure 6 With body Figure 7 As shown, the motor driver device includes a motor body 1 and a turbine 3 housing 2 connected to the upper part of the motor body 1, the turbine 3 housing 2 is connected with a turbine 3 and a worm 4, and the turbine 3 and the worm 4 are meshed with each other, and the middle part of the turbine 3 also has a connecting shaft 5 with a hexagonal hole at the center, the meshing teeth pressure angle of the turbine 3 and the worm 4 is 5 degrees, and the middle part of the turbine 3 housing 2 is provided with a through shaft hole 6, the turbine 3 housing 2 includes a main body housing 7 and a housing cover 8, and the shaft holes 6 of the main body housing 7 and the housing cover 8 are both provided with a connecting sleeve 10 for installing a bearing 9, and the two ends of the connecting shaft 5 extend out of the shaft holes 6 of the main body housing 7 and the housing cover 8 respectively, and the two ends of the connecting shaft 5 are sleeved with bearings 9, the inner ring of the bearing 9 is sleeved on the connecting shaft 5, and the outer ring is connected to the connecting sleeve 10.

[0034] A connecting ring 18 groove 11 is also provided on both sides of the turbine 3, and both ends of the connecting shaft 5 extend out of the connecting ring 18 groove 11 of the turbine 3, and the extended part is a connecting portion 12. The connecting portion 12 also has a gap step 13 near the connecting ring 18 groove 11. The bearing 9 is sleeved on the connecting portion 12, and the side surface of the bearing 9 abuts against the surface of the gap step 13.

[0035] The connecting sleeve 10 at the shell cover 8 is a reinforcing sleeve 14, which is integrally formed with the shell cover 8. The inner wall of the reinforcing sleeve also has a protruding limiting ring 1. The inner diameter of the reinforcing sleeve 14 matches the outer diameter of the bearing 9, and the diameter of the limiting ring 1 is smaller than the diameter of the bearing 9.

[0036] The connecting sleeve 10 at the main shell 7 is a reinforcing sleeve 2 15, which is integrally formed with the main shell 7. The inner wall of the reinforcing sleeve also has a protruding limiting ring 2 16. The inner diameter of the reinforcing sleeve 2 15 matches the outer diameter of the bearing 9, and the diameter of the limiting ring 2 16 is smaller than the diameter of the bearing 9.

[0037] The main shell 7 is also provided with connecting columns 17 on the four edges thereof, and the connecting columns 17 are provided with internal threads. The shell cover 8 is provided with connecting rings 18 matching the connecting columns 17 , and the shell cover 8 is connected to the main shell 7 by inserting screws or screws in the connecting rings 18 and the connecting columns 17 .

[0038] The turbine housing 2 is formed by die-casting of aluminum alloy material.

[0039] The connecting shaft 5 and the turbine 3 are integrally formed.

[0040] The end of the main housing 7 also has a mounting seat 19 for connecting the motor body 1 .

[0041] The turbine 3 housing 2 is composed of a main housing 7 and a housing cover 8. Two interconnected chambers are formed inside the main housing 7. A through axial hole 6 is opened in the middle of the main housing 7 and the housing cover 8. The axial hole 6 is used to connect the connecting shaft 5 of the turbine 3.

[0042] The interior of the main shell 7 is divided into two chambers. The chamber with the axial hole 6 is used to install the turbine 3, and the other chamber is used to install the worm 4. The turbine 3 and the worm 4 are meshed with each other, and the meshing teeth pressure angle of the turbine 3 and the worm 4 is 5 degrees, which can increase the load and bearing capacity.

[0043] There is also a connecting sleeve 10 at the axial hole 6 of the main shell 7 and the shell cover 8, and the connecting sleeve 10 is used to install the bearing 9. There is also a reinforcing sleeve 14 at the shell cover 8, and the reinforcing sleeve 14 and the shell cover 8 are integrally formed with the shell cover 8, with high strength. The bearing 9 can be embedded in the reinforcing sleeve 14, that is, the inner ring of the bearing 9 located at the shell cover 8 is connected to the connecting part 12, and the outer ring of the bearing 9 is embedded in the reinforcing sleeve 14, one side of the bearing 9 abuts against the limiting ring 1, and the other side abuts against the surface of the gap step 13 of the connecting part 12, so that the bearing 9 is limited between the gap step 13 and the limiting ring 1.

[0044] The main shell 7 also has a reinforcing sleeve 2 15, and the reinforcing sleeve 2 15 and the main shell 7 are integrally formed with each other and have high strength. The bearing 9 can be embedded in the reinforcing sleeve 2 15, that is, the inner ring of the bearing 9 located at the main shell 7 is connected to the connecting portion 12, and the outer ring of the bearing 9 is embedded in the reinforcing sleeve 2 15, one side of the bearing 9 abuts against the limiting ring 2 16, and the other side abuts against the surface of the gap step 13 of the connecting portion 12, so that the bearing 9 is limited between the gap step 13 and the limiting ring 2 16.

[0045] That is to say, the two bearings 9 are respectively installed at the sleeve of the main shell 7 and the sleeve of the shell cover 8, and the bearing 9 on one side is limited by the gap step 13 between the reinforcing sleeve 2 15 of the main shell 7 and the connecting shaft 5, and the bearing 9 on the other side is limited by the gap step 13 between the reinforcing sleeve 2 15 of the main shell 7 and the other side of the connecting shaft 5, and two-thirds of the bearing 9 is embedded in the sleeve, so that the contact area is large, the overall strength and load capacity are increased, and the connection stability between the bearing 9, the turbine 3, and the shell can be increased. The contact area between the bearing 9 and the turbine 3 connecting shaft 5 and the bearing 9 and the shell can be increased, and the overall connection stability is increased, thereby improving the overall load capacity, not easy to wear, and high strength.

[0046] All technical features in this embodiment can be freely combined according to actual needs.

[0047] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A motor driver device, comprising a motor body and a turbine housing connected to the upper part of the motor body, a turbine and a worm connected to the turbine housing, and the turbine and the worm mesh with each other, and the middle part of the turbine also has a connecting shaft with a hexagonal hole at the center, characterized in that: The pressure angle of the worm gear meshing teeth is 5 degrees. A penetrating axial hole is opened in the middle of the turbine housing. The turbine housing includes a main housing and a housing cover. The axial holes of the main housing and the housing cover are provided with mounting seats for installing bearings. The two ends of the connecting shaft extend out of the axial holes of the main housing and the housing cover respectively. Bearings are sleeved at both ends of the connecting shaft. The inner ring of the bearing is sleeved on the connecting shaft, and the outer ring is connected to the mounting seat.

2. A motor driver device according to claim 1, characterized in that: The turbine is also provided with connecting ring grooves on both sides, and both ends of the connecting shaft extend out of the turbine connecting ring groove, and the extended part is a connecting part, and the connecting part is also provided with a gap step near the connecting ring groove, and the bearing sleeve is arranged on the connecting part, and the side surface of the bearing abuts against the surface of the gap step.

3. A motor driver device according to claim 2, characterized in that: The mounting seat at the shell cover is a reinforcing sleeve 1, which is integrally formed with the shell cover. The inner wall of the reinforcing sleeve also has a protruding limiting ring 1. The inner diameter of the reinforcing sleeve 1 matches the outer diameter of the bearing, and the diameter of the limiting ring 1 is smaller than the diameter of the bearing.

4. A motor driver device according to claim 3, characterized in that: The mounting seat at the main shell is a reinforcing sleeve 2, which is integrally formed with the main shell. The inner wall of the reinforcing sleeve also has a protruding limiting ring 2. The inner diameter of the reinforcing sleeve 2 matches the outer diameter of the bearing, and the diameter of the limiting ring 2 is smaller than the diameter of the bearing.

5. The motor driver device according to claim 1, characterized in that: The main shell body is also provided with connecting columns at the four edges thereof, wherein the connecting columns are provided with internal threads, and the shell cover is provided with connecting rings matching the connecting columns, and the shell cover is connected to the main shell body by inserting screws or screws in the connecting rings and the connecting columns.

6. A motor driver device according to claim 1, characterized in that: The turbine housing is die-casted using aluminum alloy material.

7. The motor driver device according to claim 1, characterized in that: The connecting shaft and the turbine are formed in one piece.

8. The motor driver device according to claim 1, characterized in that: The end of the main body shell also has a mounting seat for connecting the motor body.

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