Automatic riveting tool for brushless motor

Abstract

An automatic riveting tool for a brushless motor comprises a lower die plate, a guide column is arranged at the upper end of the lower die plate, an upper die plate is connected to the guide column in a sliding mode, a riveting cutter fixing base and a guide rod are arranged at the upper end of the lower die plate, the periphery of the guide rod is sleeved with a pre-pressing spring, a plurality of riveting cutters are fixed to the riveting cutter fixing base, and a motor positioning base is arranged above the riveting cutter fixing base. A guide through hole is formed in the motor positioning seat, the riveting cutter penetrates through the guide through hole and is in sliding connection with the guide through hole, a first linear bearing is arranged on the motor positioning seat, the inner side of the first linear bearing is in sliding connection with the periphery of the guide rod, and the top of the pre-pressing spring abuts against the lower end of the motor positioning seat and is used for providing upward buffering thrust for the riveting cutter fixing seat; an upper pressing head fixing base is arranged at the lower end of the upper die plate, an upper pressing head is installed on the upper pressing head fixing base, and the upper pressing head corresponds to the riveting knife. The guide rod and the pre-pressing spring are matched with the motor positioning seat with the linear bearing to form a pre-pressing structure, the end face of the motor end cover is assisted to be flatly attached to the end face of the machine shell, operation efficiency is high, and machining quality is stable.

Description

Technical Field

[0001] The utility model relates to the technical field of brushless motor assembly, in particular to an automatic riveting tool for a brushless motor. Background Art

[0002] The brushless DC motor consists of an electric motor body and a driver. It is a typical mechatronic product with the advantages of low interference, low noise, smooth operation and long life. It is widely used in new energy vehicles, automotive air conditioners and other fields.

[0003] The automotive air-conditioning motor components are made up of the casing, motor body, driver and end cover through riveting. Traditional riveting requires manual pre-pressing to ensure that the end face of the end cover is flush with the end face of the casing, and then riveting. Manual pre-pressing is inefficient and prone to errors, which affects the stability of the motor processing quality.

[0004] Therefore, in view of the deficiencies in the prior art, the utility model designs a brushless motor automatic riveting tool to solve the above problems.

[0005] It should be noted that the above introduction to the technical background is only for the convenience of clearly and completely explaining the technical solution of the utility model and facilitating the understanding of those skilled in the art. It cannot be considered that the above contents are well known to those skilled in the art simply because they are explained in the background technology of the utility model. Utility Model Content

[0006] In order to overcome the deficiencies in the above-mentioned prior art, the purpose of the utility model is to provide an automatic riveting tool for a brushless motor. By adding a pre-pressing structure in the tool, the motor can be automatically pre-pressed before riveting, thereby reducing manpower consumption.

[0007] In order to achieve the above-mentioned purpose and other related purposes, the technical solution provided by the utility model is: a brushless motor automatic riveting tool, comprising a lower template, the upper end of the lower template is provided with a guide column, and the upper template is slidably connected to the guide column, wherein:

[0008] A rivet cutter fixing seat and a guide rod are provided at the upper end of the lower template, a preload spring is provided on the outer periphery of the guide rod, a plurality of rivet cutters are fixed on the rivet cutter fixing seat, a motor positioning seat is provided above the rivet cutter fixing seat, a guide through hole is provided on the motor positioning seat, the rivet cutter passes through the guide through hole and is slidably connected with the motor positioning seat, a first linear bearing is provided on the motor positioning seat, the inner side of the first linear bearing is slidably connected with the outer periphery of the guide rod, and the top of the preload spring abuts against the lower end of the motor positioning seat to provide an upward buffer thrust to the rivet cutter fixing seat;

[0009] An upper pressing head fixing seat is arranged at the lower end of the upper template, an upper pressing head is installed on the upper pressing head fixing seat, and the upper pressing head is arranged correspondingly to the rivet cutter.

[0010] The preferred technical solution is: there are four guide pillars and four guide rods.

[0011] The preferred technical solution is: a second linear bearing corresponding to the guide column is provided on the upper template, a reset spring is sleeved on the outer periphery of the guide column, and the top of the reset spring abuts against the upper template to provide an upward reset thrust to the upper template.

[0012] The preferred technical solution is: a limit column is also provided at the upper end of the lower template, and the limit column is used to limit the downward pressing stroke of the upper template.

[0013] The preferred technical solution is: an end cover positioning groove is provided at the upper end of the motor positioning seat, a casing positioning groove is provided below the end cover positioning groove, and a motor shaft end positioning hole is provided at the bottom of the casing positioning groove.

[0014] The preferred technical solution is: a pressure head mounting hole is provided on the upper pressure head fixing seat, a guide horn groove is provided at the front end of the pressure head mounting hole, and the outer periphery of the upper pressure head is movably connected to the pressure head mounting hole.

[0015] The preferred technical solution is: a first gasket is provided between the upper pressure head fixing seat and the upper template, and a second gasket is provided between the rivet cutter fixing seat and the lower template.

[0016] The preferred technical solution is: a cushion block is provided at the upper end of the upper template to cooperate with the downward pressure transmission of the riveting press.

[0017] Due to the application of the above technical scheme, the utility model provides a brushless motor automatic riveting tool, which forms a pre-stressing structure through a guide rod and a pre-stressing spring in conjunction with a motor positioning seat with a linear bearing, thereby assisting the end face of the motor end cover to be flush with the end face of the casing, with high operating efficiency and stable processing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural schematic diagram of a brushless motor automatic riveting tooling of the utility model;

[0019] Figure 2 This is an exploded view of a brushless motor automatic riveting tooling of the utility model;

[0020] Figure 3 This is an exploded diagram of a brushless motor;

[0021] Figure 4 It is a top view of the middle pressure head fixing seat and the upper pressure head of the utility model;

[0022] Figure 5 for Figure 4 A cross-sectional view taken along AA in the middle;

[0023] Figure 6 It is a structural schematic diagram of the motor positioning seat in the utility model.

[0024] In the above drawings, 1, lower template; 11, rivet cutter fixing seat; 12, guide rod; 13, preload spring; 14, rivet cutter; 15, motor positioning seat; 15a, guide through hole; 15b, first linear bearing; 15c, housing positioning groove; 15d, end cover positioning groove; 15e, motor shaft end positioning hole; 16, limit column; 17, second gasket; 2, guide column; 21, reset spring; 3, upper template; 31, upper pressure head fixing seat; 31a, pressure head mounting hole; 31b, guide horn groove; 32, upper pressure head; 33, second linear bearing; 34, first gasket; 35, cushion block; 4, brushless motor; 41, housing; 42, motor body; 43, end cover; 44, rivet. DETAILED DESCRIPTION

[0025] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0026] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, terms such as "horizontal", "vertical", and "overhanging" do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0027] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] like Figure 1 As shown, the utility model discloses a brushless motor automatic riveting tool, comprising a lower template 1, a guide column 2 is provided at the upper end of the lower template 1, and an upper template 3 is slidably connected to the guide column 2. The main components of the utility model are described in detail below:

[0029] like Figure 1 and Figure 2 As shown, a rivet cutter fixing seat 11 and a guide rod 12 are provided at the upper end of the lower template 1, wherein a second gasket 17 is arranged between the rivet cutter fixing seat 11 and the lower template 1 to ensure the stability and accuracy of riveting, a rivet cutter 14 is arranged on the rivet cutter fixing seat 11, and a pre-compression spring 13 is sleeved on the outer periphery of the guide rod 12; a limit column 16 is also provided at the upper end of the lower template 1, and the limit column 16 is used to limit the downward stroke of the upper template 3.

[0030] like Figure 2 and Figure 3 As shown, a motor positioning seat 15 is provided above the rivet cutter fixing seat 11, a guide through hole 15a is provided on the motor positioning seat 15, the rivet cutter 14 passes through the guide through hole 15a and is movably connected with the rivet cutter 14, a first linear bearing 15b is provided on the motor positioning seat 15, the inner side of the first linear bearing 15b is slidably connected with the outer periphery of the guide rod 12, and the preload spring 13 is used to provide an upward thrust to the rivet cutter fixing seat 11. The above structure is used to preload the assembly of the brushless motor 4, and the preload spring 13 provides an upward thrust to the motor positioning seat 15, and under the action of the upper pressure head fixing seat 31 and the upper pressure head 32, the housing 41 and the end cover 43 are aligned.

[0031] like Figure 1 , Figure 2 and Figure 6 As shown, the upper end of the motor positioning seat 15 is provided with an end cover positioning groove 15d, the lower end of the end cover positioning groove 15d is provided with a housing positioning groove 15c, and the bottom of the housing positioning groove 15c is provided with a motor shaft end positioning hole 15e, so as to ensure the accuracy of positioning of the various components of the brushless motor 4. It should be noted that the above structure is merely exemplary and not restrictive. In this embodiment, the bottom of the housing positioning groove 15c is provided with a motor shaft end positioning hole 15e, but in other embodiments, the bottom of the housing positioning groove 15c may also be provided with other groove-type positioning.

[0032] like Figure 2 , Figure 4 and Figure 5 As shown, a cushion block 35 is provided at the upper end of the upper template 3, and an upper pressure head fixing seat 31 is provided at the lower end thereof. A first gasket 34 is provided between the upper pressure head fixing seat 31 and the upper template 3 for buffering. An upper pressure head 32 is provided on the upper pressure head fixing seat 31. The upper pressure head 32 is arranged corresponding to the rivet cutter 14. A second linear bearing 33 corresponding to the guide column 2 is provided on the upper template 3. A pressure head mounting hole 31a is provided on the upper pressure head fixing seat 31. The outer periphery of the upper pressure head 32 is movably connected with the pressure head mounting hole 31a. A guide horn groove 31b is provided at the front end of the pressure head mounting hole 31a for assisting in positioning the rivet 44.

[0033] like Figure 1 and Figure 2As shown, a return spring 21 is sleeved on the outer periphery of the guide column 2, and the return spring 21 is used to provide an upward thrust to the upper template 3. There are four guide columns 2 and four guide rods 12.

[0034] refer to Figure 1 - Figure 6 As shown, when in use, the housing 41, the motor body 42, the end cover 43 and the rivet 44 are preliminarily assembled and placed in the motor positioning seat 15, and the riveting device is started to press the upper template 3 downward through the pad 35. During the pressing process of the upper template 3, the upper pressure head fixing seat 31 and the upper pressure head 32 move downward together. When the upper pressure head fixing seat 31 contacts the end cover 43 of the brushless motor 4 downward, a downward pressure is generated on the end cover 43. At this time, the motor positioning seat 15 is forced downward, and the pre-compression spring 13 is pressed. The motor positioning seat 15 is compressed to generate an upward thrust. Under the action of the above pressure and thrust, the housing 41 of the brushless motor 4 is fitted and positioned with the housing positioning groove 15c, and the end cover 43 is fitted and positioned with the end cover positioning groove 15d; the shaft end of the motor body 42 is fitted and positioned with the motor shaft end positioning hole 15e, so that the housing 41, the motor body 42 and the end cover 43 of the brushless motor 4 are assembled and positioned, and the guide horn groove 31b is continuously pressed down to guide and correct the rivet 44, and finally the riveting is completed.

[0035] In summary, the utility model discloses an automatic riveting tool for a brushless motor, which improves the riveting efficiency by designing a riveting tool with a pre-pressing structure to replace manual automatic pre-pressing of the brushless motor.

[0036] The above embodiment provided by the utility model is only an example of the principle and effect of the utility model, and is not used to limit the utility model. Anyone familiar with this technology can modify or change the above embodiment without violating the spirit and scope of the utility model. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the relevant technical field without departing from the spirit and technical ideas disclosed by the utility model should still be covered by the claims of the utility model.

Claims

1. A brushless motor automatic riveting tool, comprising a lower template, a guide column is provided at the upper end of the lower template, and an upper template is slidably connected to the guide column, characterized in that: The upper end of the lower template is provided with a rivet cutter fixing seat and a guide rod, the outer periphery of the guide rod is sleeved with a pre-compression spring, the rivet cutter fixing seat is provided with a rivet cutter, a motor positioning seat is provided above the rivet cutter fixing seat, a guide through hole is provided on the motor positioning seat, the rivet cutter passes through the guide through hole and is movably connected with the motor positioning seat, a first linear bearing is provided on the motor positioning seat, the inner side of the first linear bearing is slidably connected with the outer periphery of the guide rod, and the pre-compression spring is used to provide an upward thrust to the rivet cutter fixing seat; An upper pressing head fixing seat is provided at the lower end of the upper template, an upper pressing head is provided on the upper pressing head fixing seat, and the upper pressing head is arranged corresponding to the rivet cutter.

2. The automatic riveting tool for a brushless motor according to claim 1, characterized in that: There are four guide pillars and four guide rods.

3. The automatic riveting tool for a brushless motor according to claim 1, characterized in that: The upper template is provided with a second linear bearing corresponding to the guide column, and the outer periphery of the guide column is sleeved with a return spring, which is used to provide an upward thrust to the upper template.

4. The automatic riveting tool for brushless motor according to claim 1, characterized in that: A limiting column is also provided at the upper end of the lower template, and the limiting column is used to limit the downward pressing stroke of the upper template.

5. The automatic riveting tool for brushless motor according to claim 1, characterized in that: An end cover positioning groove is arranged at the upper end of the motor positioning seat, a casing positioning groove is arranged below the end cover positioning groove, and a motor shaft end positioning hole is arranged at the bottom of the casing positioning groove.

6. The automatic riveting tool for brushless motor according to claim 1, characterized in that: The upper pressure head fixing seat is provided with a pressure head mounting hole, the front end of the pressure head mounting hole is provided with a guide horn groove, and the outer periphery of the upper pressure head is movably connected with the pressure head mounting hole.

7. The automatic riveting tool for brushless motor according to claim 1, characterized in that: A first gasket is provided between the upper pressure head fixing seat and the upper template, and a second gasket is provided between the rivet tool fixing seat and the lower template.

8. The automatic riveting tool for brushless motor according to claim 1, characterized in that: A cushion block is provided at the upper end of the upper template.

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