Miniature coreless gear box motor mounting structure and screw rod slide rail module

Abstract

The utility model discloses a miniature coreless gear box motor mounting structure and a screw rod slide rail module, which comprise a gear box motor and a flange sleeve positioned outside the gear box motor, the gear box motor comprises a main body and a thread step positioned at one end of the main body facing an output shaft, the outer diameter of the thread step is smaller than that of the main body, and the outer diameter of the screw rod slide rail module is smaller than that of the main body. The flange sleeve comprises a first matching part wrapping the peripheral face of the body and a second matching part in threaded fit with the threaded step, and a plurality of first threaded holes are formed in the end, facing a mounting base in the lead screw sliding rail module, of the flange sleeve. According to the utility model, the external thread is processed outside the gear box motor, and the special flange sleeve and the fixed seat are mounted, so that a micro motor which cannot be mounted by a screw originally can be connected by a screw, and therefore, the screw rod slide rail module can be driven by a high-speed and micro hollow cup motor, and the power performance of the screw rod slide rail module is improved.

Description

Technical Field

[0001] This utility model relates to the field of industrial automation technology, and in particular to a micro hollow cup gearbox motor mounting structure and a lead screw slide rail module. Background Technology

[0002] Lead screw module motors are commonly used in industrial automation, with stepper motors typically used for the motor component. Due to their high speed, coreless motors are not suitable for direct lead screw connection. A gearbox can be added to reduce speed and increase torque, allowing the nut to generate greater thrust. However, the gearbox increases the motor's overall size. As market demand expands, coreless motors are becoming increasingly smaller, especially after adding a gearbox. To achieve miniaturization, the outer dimensions of the gearbox motor need to be further reduced, making it impossible to install screws.

[0003] However, traditional lead screw module motors are fixed to a mounting base using screws. For example, in the utility model patent CN209030041U entitled "A Fully Sealed Compact Linear Module," the motor is described as being mounted on a mounting base, and the accompanying drawings show that the mounting base and motor are connected by screws. However, due to their small size, micro gearbox motors cannot be assembled using screws. Therefore, how to stably connect the micro gearbox motor to the mounting base and achieve miniaturization of the lead screw and slide rail module is a technical problem that needs to be solved. Utility Model Content

[0004] To address the technical problem that the fixed base in the existing ball screw and slide rail module cannot be stably connected to the micro gearbox motor, thus hindering the miniaturization design of the ball screw and slide rail module, this utility model provides a micro hollow cup gearbox motor mounting structure and a ball screw and slide rail module to solve the above problems.

[0005] This utility model proposes a mounting structure for a miniature hollow cup gearbox motor, including a gearbox motor and a flange sleeve located outside the gearbox motor. The gearbox motor includes a main body and a threaded step located at the end of the main body facing the output shaft. The outer diameter of the threaded step is smaller than the outer diameter of the main body. The flange sleeve includes a first mating part that wraps around the outer circumference of the main body and a second mating part that is threadedly engaged with the threaded step. The end of the flange sleeve facing the mounting seat in the lead screw slide module has several first threaded holes.

[0006] Furthermore, the outer diameter of the second mating part is the same as the outer diameter of the first mating part.

[0007] Furthermore, the surface of the first mating part has a second threaded hole that connects to the fixed seat in the lead screw slide module.

[0008] Furthermore, the outer surface of the flange sleeve is a hexagonal prism, and six first threaded holes are evenly arranged on the end face of the flange sleeve.

[0009] Furthermore, a flange bearing is installed on the output shaft of the gearbox motor, and the outer surface of the flange bearing is positioned in conjunction with the shaft hole of the mounting base.

[0010] This utility model also proposes a lead screw and slide rail module, including a fixed base and a lead screw, coupling, slide rail, nut, and the aforementioned miniature hollow cup gearbox motor mounting structure mounted on the fixed base. The gearbox motor is connected to the lead screw through the coupling. The nut is threaded to the outside of the lead screw and slidably connected to the slide rail. The fixed base is equipped with a mounting seat fixed to the gearbox motor and a limiting seat rotatably connected to the end of the lead screw.

[0011] Furthermore, the mounting base and the fixed base are integrally formed, and the mounting base is provided with a shaft hole and a first mounting hole, with the first mounting hole corresponding to the first threaded hole for installation.

[0012] Furthermore, the fixing seat has a limiting boss, and the limiting boss has a second mounting hole that connects to the limiting seat.

[0013] Furthermore, a wire thread insert is installed in the second mounting hole.

[0014] Furthermore, the fixed seat located between the mounting seat and the limiting seat has a guide boss for horizontally guiding the slide rail.

[0015] The beneficial effects of the utility model are:

[0016] (1) The present invention processes external threads on the outside of the gearbox motor and uses a special flange sleeve and a fixed seat for installation, so that the micro motor that could not be installed with screws can also be connected with screws, thereby enabling the lead screw slide rail module to be driven by a high-speed and micro hollow cup motor, thus improving the power performance of the lead screw slide rail module.

[0017] (2) This utility model improves upon the existing fixed seat by adding a wire thread sleeve, thereby reducing deformation at the threaded hole and making the connection between the limiting seat and the fixed seat more reliable. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a perspective view of a specific embodiment of the lead screw and slide rail module of this utility model;

[0020] Figure 2 This is an axial sectional view of a specific embodiment of the lead screw and slide rail module of this utility model;

[0021] Figure 3 This is a front view of the gearbox motor in this utility model;

[0022] Figure 4 This is a perspective view of the flange sleeve in this utility model;

[0023] Figure 5 yes Figure 4 The flange shown is an axial sectional view.

[0024] Figure 6 yes Figure 4 Left view of the flange shown;

[0025] Figure 7 This is a perspective view of the mounting structure of the miniature hollow cup gearbox motor described in this utility model;

[0026] Figure 8 yes Figure 7 Axial sectional view;

[0027] Figure 9 This is a perspective view of the fixing base in this utility model;

[0028] Figure 10 This is an assembly diagram of the limiting boss and the wire thread sleeve in this utility model;

[0029] Figure 11 This is a schematic diagram of the assembly of the slide rail and the slider in this utility model.

[0030] In the diagram, 1. Gearbox motor; 101. Main body; 102. Threaded step; 2. Flange sleeve; 201. First mating part; 202. Second mating part; 203. First threaded hole; 204. Second threaded hole; 3. Flange bearing; 4. Mounting seat; 401. Shaft hole; 402. First mounting hole; 5. Lead screw; 6. Coupling; 7. Slide rail; 8. Nut; 9. Fixed seat; 10. Limit seat; 11. Limit bearing; 12. Limit boss; 13. Second mounting hole; 14. Wire thread sleeve; 15. Guide boss; 16. Slider. Detailed Implementation

[0031] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0032] Example 1

[0033] like Figure 3-Figure 8As shown, a mounting structure for a miniature hollow cup gearbox motor includes a gearbox motor 1 and a flange sleeve 2 located outside the gearbox motor 1. The gearbox motor 1 includes a main body 101 and a threaded step 102 located at the end of the main body 101 facing the output shaft. The threaded step 102 refers to a stepped structure with threads. The outer diameter of the threaded step 102 is smaller than the outer diameter of the main body 101, so as not to increase the overall size of the gearbox motor 1. The flange sleeve 2 includes a first mating part 201 wrapped around the outer circumference of the main body 101 and a second mating part 202 that is threadedly engaged with the threaded step 102. The end of the flange sleeve 2 facing the mounting seat 4 in the screw slide module has a plurality of first threaded holes 203.

[0034] The first mating part 201 is used to connect with the main body 101. The first mating part 201 can be directly sleeved on the outside of the main body 101 to serve as a structural limit. To ensure installation stability, a fixed installation method is preferred, such as interference fit, snap-fit, or screw fixation. The design of the first mating part 201 can increase the contact area between the flange sleeve 2 and the gearbox motor 1, and reduce the shear force on the threaded step 102 and the second mating part 202.

[0035] The second mating part 202 is provided with an internal thread, which is assembled on the outside of the threaded step 102 to fix the flange sleeve 2 and the gearbox motor 1. The threaded step 102 is located outside the front end cover of the gearbox motor 1. The first threaded hole 203 is used to install screws when fixing with the mounting base 4.

[0036] The flange sleeve 2 can add a first threaded hole 203 to the end face of the gearbox motor 1 without changing the original structure of the gearbox motor 1, so that it can be connected to the mounting base 4 by screws. The flange sleeve 2 has a simple structure and the position of the first threaded hole 203 can be determined according to the actual installation requirements, so that the gearbox motor 1 has a wider range of compatibility.

[0037] For ease of machining, the outer diameter of the second mating part 202 is the same as the outer diameter of the first mating part 201. That is, the outer circumferential surface shape of the flange sleeve 2 is the same along the axial direction, while the inner circumferential surface shape of the flange sleeve 2 is the same as that of the main body 101 or the threaded step 102. In this case, the external structure of the flange sleeve 2 is relatively regular, such as... Figure 5 and Figure 8 As shown, the flange sleeve 2 is an axially continuous columnar structure, wherein the second mating part 202 protrudes inward relative to the first mating part 201.

[0038] When installing the gearbox motor 1, the output shaft of the gearbox motor 1 is connected to the coupling 6 through the shaft hole 401 of the mounting base 4. In order to ensure good centering of the output shaft of the gearbox motor 1, it is preferable to fit the bearing installed on the output shaft with the shaft hole 401 of the mounting base 4, that is, the outer surface of the bearing is installed in the shaft hole 401. The bearing can be a flange bearing 3 with good surface centering, thereby improving the positioning accuracy.

[0039] Example 2

[0040] In Embodiment 1, the mounting base 4 of the screw guide module is mounted on the fixed base 9. Therefore, after the flange sleeve 2 is fixed to the mounting base 4, the gearbox motor 1 can be fixed. However, since the flange sleeve 2 is located at one end of the gearbox motor 1, it is difficult to achieve a stable connection between the entire gearbox motor 1 and the fixed base 9 by installing the screws at the end. Therefore, in this embodiment, a second threaded hole 204 that connects to the fixed base 9 in the screw guide module is preferably provided on the surface of the first mating part 201. The second screw hole on the fixed base 9 and the flange sleeve 2 is fixed by screw installation.

[0041] Since the surface of the fixing seat 9 is flat, the outer surface of the first mating part 201 needs to have at least one flat surface that fits against the fixing seat 9. Simultaneously, since the mounting seat 4 typically has three first mounting holes 402 for mounting screws, in the preferred embodiment of this utility model, the outer surface of the flange sleeve 2 is a hexagonal prism, and six first threaded holes 203 are evenly arranged on the end face of the flange sleeve 2. Second threaded holes 204 are located on one of the outer planes of the flange sleeve 2; preferably, one second threaded hole 204 is provided on each outer plane. Because the six first threaded holes 203 are evenly distributed, regardless of how the flange sleeve 2 is installed, three first threaded holes 203 can be found to correspond to the mounting holes for installation. Figure 6 The three first threaded holes 203 marked in the diagram are connected to the mounting base 4. Figure 5 The second threaded hole 204, as marked in the figure, is connected to the fixed base 9.

[0042] Example 3

[0043] A type of lead screw guide module, such as Figure 1 and Figure 2 As shown, the structure includes a fixed base 9 and a lead screw 5, a coupling 6, a slide rail 7, a nut 8, and the aforementioned mounting structure for the miniature hollow cup gearbox motor 1, all mounted on the fixed base 9. The gearbox motor 1 is connected to the lead screw 5 via the coupling 6. The nut 8 is threaded onto the lead screw 5 and slidably connected to the slide rail 7. The fixed base 9 is equipped with a mounting seat 4 fixed to the gearbox motor 1 and a limiting seat 10 rotatably connected to the end of the lead screw 5.

[0044] The slide rail 7 is mounted on the fixed base 9, located between the mounting base 4 and the limiting base 10, and is used to guide the linear movement of the nut 8. It can fix the nut 8 to the slider 16, and the slider 16 is slidably connected to the slide rail 7 (e.g., ...). Figure 11 (As shown).

[0045] The function of coupling 6 is to connect lead screw 5 and the output shaft of gearbox motor 1. When the outer diameter of gearbox motor 1 is small, lead screw 5 cannot be designed to be directly connected to the output shaft of gearbox motor 1. Even if a lead screw 5 with a small outer diameter is directly connected to the output shaft, the axial force generated by lead screw 5 during operation will act on the bearings of the gearbox, reducing the bearing life. Moreover, by using coupling 6, the outer diameter of lead screw 5 can be selected in various sizes, making the matching more convenient.

[0046] A limit bearing 11 is provided inside the limit seat 10. The limit seat 10 and the limit bearing 11 serve to limit and support the lead screw 5.

[0047] The structure of mounting base 4 is as follows: Figure 9 As shown, the mounting base 4 is provided with a shaft hole 401 and a first mounting hole 402, and the first mounting hole 402 corresponds to the first threaded hole 203 for installation. The mounting base 4 and the fixed base 9 are integrally formed, which has the advantage of higher installation and positioning accuracy of the gearbox motor 1 and better centering of the output shaft.

[0048] To facilitate the installation of the limit bearing 11 and the lead screw 5, the limit seat 10 and the fixed seat 9 are preferably fixed in a detachable manner. Specifically, for example... Figure 9 As shown, the fixed base 9 has a limiting boss 12, and the limiting boss 12 has a second mounting hole 13 that connects to the limiting base 10. The second mounting hole 13 can be a threaded hole for fixing to the limiting base 10 with screws.

[0049] In a further design, the fixed seat 9 located between the mounting base 4 and the limiting seat 10 has a guide boss 15 for horizontally guiding the slide rail 7. For example... Figure 9 As shown, the guide boss 15 is a long strip plate protruding from the surface of the fixed base 9, and its side is the guide surface. During installation, the slide rail 7 is in close contact with the guide surface of the guide boss 15, and then the slide rail 7 is fixed to the fixed base 9 with screws.

[0050] Example 4

[0051] Since the fixing seat 9 is usually made of cast iron or aluminum alloy, which is relatively soft, the reciprocating axial movement of the lead screw 5 will deform the second mounting hole 13, causing the screw connection to fail. Therefore, this embodiment makes the following improvements based on embodiment three: Figure 10As shown, a wire thread insert 14 is installed in the second mounting hole 13. A screw is installed in the wire thread insert 14. The wire thread insert 14 is made of stainless steel, which has high hardness and is not easily deformed. Specifically, it is made of high-strength, high-precision, and smooth-surfaced cold-rolled diamond-shaped stainless steel wire. After installing the wire thread insert 14, deformation of the connection part with the screw can be avoided, thereby improving the service life of the entire module.

[0052] This utility model has a simple structure. It uses a specially designed flange sleeve 2 to connect the miniature hollow cup gearbox motor 1 and the lead screw 5, making the overall structure more stable.

[0053] In the description of this utility model, it should be understood that the terms "inner", "outer", "axial", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0054] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "a number" means two or more.

[0055] In this specification, the illustrative expressions of the terms do not necessarily refer to the same embodiments. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments.

[0056] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A mounting structure for a miniature hollow cup gearbox motor, characterized in that: The assembly includes a gearbox motor (1) and a flange sleeve (2) located outside the gearbox motor (1). The gearbox motor (1) includes a body (101) and a threaded step (102) located at one end of the body (101) facing the output shaft. The outer diameter of the threaded step (102) is smaller than the outer diameter of the body (101). The flange sleeve (2) includes a first mating part (201) wrapped around the outer circumference of the body (101) and a second mating part (202) threadedly engaged with the threaded step (102). The flange sleeve (2) has a plurality of first threaded holes (203) at one end facing the mounting seat (4) in the screw slide module.

2. The mounting structure for the miniature hollow cup gearbox motor according to claim 1, characterized in that: The outer diameter of the second mating part (202) is the same as the outer diameter of the first mating part (201).

3. The mounting structure for the miniature hollow cup gearbox motor according to claim 1, characterized in that: The surface of the first mating part (201) has a second threaded hole (204) that connects to the fixed seat (9) in the lead screw slide module.

4. The mounting structure of the miniature hollow cup gearbox motor (1) according to claim 3, characterized in that: The outer surface of the flange sleeve (2) is a hexagonal prism, and six first threaded holes (203) are evenly arranged on the end face of the flange sleeve (2).

5. The mounting structure for the miniature hollow cup gearbox motor according to claim 1, characterized in that: A flange bearing (3) is installed on the output shaft of the gearbox motor (1), and the outer surface of the flange bearing (3) is positioned in conjunction with the shaft hole (401) of the mounting base (4).

6. A lead screw guide rail module, characterized in that: The device includes a fixed base (9) and a lead screw (5), a coupling (6), a slide rail (7), a nut (8) mounted on the fixed base (9), and a micro hollow cup gearbox motor mounting structure as described in any one of claims 1-5. The gearbox motor (1) is connected to the lead screw (5) via the coupling (6). The nut (8) is threaded onto the lead screw (5) and slidably connected to the slide rail (7). The fixed base (9) is equipped with a mounting seat (4) fixed to the gearbox motor (1) and a limiting seat (10) rotatably connected to the end of the lead screw (5).

7. The lead screw and guide rail module according to claim 6, characterized in that: The mounting base (4) and the fixing base (9) are integrally formed. The mounting base (4) is provided with a shaft hole (401) and a first mounting hole (402). The first mounting hole (402) is installed in correspondence with the first threaded hole (203).

8. The lead screw and guide rail module according to claim 6, characterized in that: The fixed seat (9) has a limiting boss (12), and the limiting boss (12) has a second mounting hole that connects to the limiting seat (10).

9. The lead screw and guide rail module according to claim 8, characterized in that: A wire threaded insert (14) is installed in the second mounting hole.

10. The lead screw and guide rail module according to claim 6, characterized in that: The fixed seat (9) located between the mounting seat (4) and the limiting seat (10) has a guide boss (15) for horizontally guiding the slide rail (7).

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