Simple locked-rotor device for motor shaft

Abstract

The utility model relates to the technical field of motor testing devices, in particular to a simple locked-rotor device for a motor shaft, which comprises a seat body and a fastener combination, the seat body is provided with a fastening hole and a clamping and embedding part, the clamping and embedding part is provided with a through hole, the hole wall of the through hole is provided with a plurality of annularly arranged convex teeth, the convex teeth are in one-to-one correspondence with key grooves in a motor, and the fastening piece combination is provided with a plurality of fastening pieces. According to the utility model, the convex teeth are embedded into the key grooves, so that the output shaft of the motor drives the seat body to rotate synchronously, the insertion piece penetrates through the fastening hole and the connecting hole, and the motor is driven to rotate synchronously through the insertion piece penetrating through the fastening hole and the connecting hole, so that the motor is driven to rotate synchronously, and the motor is driven to rotate synchronously. The locking device has the advantages that the position of the motor does not need to be moved, the size is small, and the structure is simple.

Description

Technical Field

[0001] The present application relates to the technical field of motor testing devices, and more specifically to a simple motor shaft stalling device. Background Art

[0002] An electric motor is a device that converts electrical energy into mechanical energy. It is also often used as a driving device in window lifting. After the passenger turns the window switch and the window glass rises to the top of the window, the passenger usually cannot release the window switch when the window glass just rises to the top. At this time, the motor shaft that drives the window glass to move upward is in a locked state where it is energized but cannot rotate. In order to test the motor's anti-overburning ability in the locked state, it is necessary to use a motor shaft blocking device during the test to keep the motor energized but the motor shaft locked.

[0003] However, existing motor shaft locking devices mostly include a tooling disk and a base, which are large in size and complex in structure. During testing, the motor needs to be moved to the base and matched with the corresponding tooling disk. The installation and testing are cumbersome and inconvenient, and the numerous metal parts will have a great impact on the detection data during the electromagnetic compatibility test of the motor.

[0004] Therefore, there is a need to provide a simple motor shaft blocking device that does not require moving the motor position, has a small size, and a simple structure. Summary of the Invention

[0005] The main purpose of the present application is to provide a simple motor shaft blocking device, which is installed on an electric motor, wherein the motor includes an output shaft and several connecting holes, and the side surface of the output shaft has several key slots arranged in an annular manner, wherein the simple motor shaft blocking device includes a seat body and a fastener combination, the seat body has a fastening hole and a clamping portion, the clamping portion has a through hole, and the hole wall of the through hole has several convex teeth arranged in an annular manner, the convex teeth correspond to the key slots one by one, each of the convex teeth is engaged with the corresponding key slot, and the fastening hole is directly opposite to the connecting hole, the fastener combination includes an insert, the insert passes through the fastening hole and the connecting hole in sequence, and the convex teeth are engaged with the key slot, so that the motor output shaft drives the seat body to rotate synchronously, and the insert passes through the fastening hole and the connecting hole to limit the rotation of the seat body, thereby achieving locking of the motor output shaft. Compared with the existing technology, it has the advantages of not needing to move the motor position, small size and simple structure.

[0006] Another object of the present application is to provide a simple motor shaft blocking device, wherein the base body has a disassembly hole, the embedded part is an intermediate piece, the intermediate piece is placed in the disassembly hole and is detachably connected to the base body, and the intermediate piece has the through hole. By setting the embedded part as a detachable intermediate piece, the versatility is improved.

[0007] In order to achieve at least one of the above-mentioned invention purposes, the present application provides a simple motor shaft blocking device, which is installed on an electric motor, wherein the electric motor includes an output shaft and a plurality of connecting holes, and the side surface of the output shaft has a plurality of key slots arranged in an annular manner, wherein the simple motor shaft blocking device includes:

[0008] a seat, the seat having a fastening hole and a locking portion, the locking portion having a through hole, and the hole wall of the through hole having a plurality of annularly arranged protruding teeth, the protruding teeth corresponding to the key slots one by one, each protruding tooth being engaged with the corresponding key slot, and the fastening hole being directly opposite to the connecting hole; and

[0009] A fastener assembly includes an insert that passes through the fastening hole and the connecting hole in sequence.

[0010] In one or more embodiments of the present application, the base body has a disassembly hole, the engaging portion is an intermediate piece, the intermediate piece is placed in the disassembly hole and is detachably connected to the base body, and the intermediate piece has the through hole.

[0011] In one or more embodiments of the present application, the hole wall of the disassembly hole has a plurality of through holes, and the through holes extend from the hole wall of the disassembly hole to the side wall of the seat body. The side wall of the intermediate piece has a plurality of threaded holes, and the threaded holes correspond one-to-one to the through holes. When the protruding teeth are embedded in the keyway, the threaded holes are opposite to the through holes. The fastener combination also includes a plurality of bolts, and each of the bolts is threadedly connected to the corresponding threaded hole after passing through the corresponding through hole.

[0012] In one or more embodiments of the present application, the fastening hole is a waist-shaped hole.

[0013] In one or more embodiments of the present application, the two ends of the insert respectively have a cap body portion and a threaded portion, and the width of the cap body portion is greater than the width of the fastening hole.

[0014] In an embodiment of the present application, a simple motor shaft blocking device includes a seat and a fastener combination, the seat has a fastening hole and a locking portion, the locking portion has a through hole, and the hole wall of the through hole has a plurality of convex teeth arranged in a ring, the convex teeth correspond one to one with the key slots on the motor, each convex tooth is engaged with the corresponding key slot, and the fastening hole is directly opposite to the connecting hole on the motor, the fastener combination includes an insert, the insert passes through the fastening hole and the connecting hole in turn, and the convex teeth are engaged with the key slot to realize the synchronous rotation of the seat driven by the motor output shaft, and the insert passes through the fastening hole and the connecting hole to limit the rotation of the seat, thereby realizing the locking of the motor output shaft. Compared with the existing technology, it has the advantages of not needing to move the position of the motor, small size and simple structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] These and / or other aspects and advantages of the present application will become more clear and easier to understand from the following detailed description of the embodiments of the present application in conjunction with the accompanying drawings, in which:

[0016] Figure 1 The figure shows a structural schematic diagram of an existing electric motor;

[0017] Figure 2 The figure shows a schematic diagram of the structure of a simple motor shaft blocking device installed on a motor according to the present invention;

[0018] Figure 3 The figure shows a schematic structural diagram of the seat body;

[0019] Figure 4 The diagram shows the structural diagram of the middleware. DETAILED DESCRIPTION

[0020] The terms and words used in the following description and claims are not limited to the literal meanings, but are merely used by the inventor to enable a clear and consistent understanding of the present application. Therefore, it will be apparent to those skilled in the art that the following description of various embodiments of the present application is provided for illustration purposes only and not for the purpose of limiting the present application as defined by the appended claims and their equivalents.

[0021] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the elements may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0022] Although ordinal numbers such as "first," "second," and the like will be used to describe various components, these are not intended to limit those components. The terms are used solely to distinguish one component from another. For example, a first component could be referred to as a second component, and similarly, a second component could be referred to as a first component without departing from the teachings of the utility model. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0023] The terms used herein are for the purpose of describing various embodiments only and are not intended to be limiting. As used herein, the singular is intended to include the plural, unless the context clearly indicates otherwise. It will also be understood that the terms "comprising" and / or "having" when used in this specification specify the presence of a stated feature, number, step, operation, component, element, or combination thereof, and do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, elements, or groups thereof.

[0024] Schematic diagram of a simple motor shaft blocking device, see Figures 2 to 4 According to a preferred embodiment of the present invention, a simple motor shaft blocking device is installed in the following manner: Figure 1 The motor 90 shown includes an output shaft 901 and a plurality of connecting holes 902 . The side surface of the output shaft 901 has a plurality of key slots 9011 arranged in an annular shape.

[0025] Furthermore, the simple motor shaft locking device includes a base 10 and a fastener assembly (not shown in the figure).

[0026] Specifically, if Figure 2 and Figure 4 As shown, the seat body 10 has a fastening hole 101 and an embedding portion 102, the embedding portion 102 has a through hole 1021, and the hole wall of the through hole 1021 has a plurality of protruding teeth 1022 arranged in a ring shape, the protruding teeth 1022 correspond one-to-one to the key groove 9011, each of the protruding teeth 1022 is embedded in the corresponding key groove 9011, and the fastening hole 101 is opposite to the connection; the fastener combination includes an insert 20, and the insert 20 passes through the fastening hole 101 and the connection hole 902 in sequence.

[0027] It should be noted that, by engaging the convex tooth 1022 with the keyway 9011, when the output shaft 901 rotates circumferentially, it will drive the seat body 10 to rotate circumferentially together. However, because the insert 20 passes through the fastening hole 101 and the connecting hole 902 in sequence, and the connecting hole 902 limits the insert 20 from rotating around the central axis of the output shaft 901, the motor shaft is prevented from being blocked. In addition, by utilizing the keyway 9011 and the connecting hole 902 already possessed by the motor 90, the base and tooling disk in the prior art are replaced, so that the simple motor shaft blocking device has the advantages of small size and simple structure, and during the entire anti-blocking process, there is no need to move the motor, but only the seat body 10 needs to be installed on the motor, thereby achieving the advantage of not having to move the position of the motor.

[0028] Furthermore, since the size and shape of the keyway 9011 on the output shaft 901 of different electric motors 90 may vary, in order to improve the versatility of the simple motor shaft locking device, the base body 10 has a disassembly hole 103, and the embedded portion 102 is an intermediate piece 102A. The intermediate piece 102A is placed in the disassembly hole 103 and is detachably connected to the base body 10, and the intermediate piece 102A has the through hole 1021.

[0029] It should be noted that, by implementing the engaging portion 102 as a detachable middle piece 102A, the corresponding middle piece 102A can be selected according to the shape of the output shaft 901 on the motor 90 to achieve the purpose of engagement.

[0030] Furthermore, in the embodiment of the present application, the intermediate piece 102A is cylindrical in shape as a whole, and the disassembly hole 103 is a circular hole. In order to realize the detachable connection between the intermediate piece 102A and the base body 10, as shown in FIG. Figure 3 As shown, the hole wall of the disassembly hole 103 has a plurality of through holes 1031, and the through holes 1031 pass through the hole wall of the disassembly hole 103 to the side wall of the base body 10, as shown in FIG. Figure 4 As shown, the side wall of the intermediate piece 102A has a plurality of threaded holes 102A1, and the threaded holes 102A1 correspond one-to-one to the through holes 1031. When the protruding teeth 1022 are embedded in the keyway 9011, the threaded holes 102A1 are opposite to the through holes 1031. The fastener assembly also includes a plurality of bolts (not shown in the figure), and each of the bolts is threadedly connected to the corresponding threaded hole 102A1 after passing through the corresponding through hole 1031.

[0031] Furthermore, since the position and size of the connecting hole 902 of different motors 90 may vary, that is, the spacing between the connecting hole 902 and the central axis of the output shaft 901 may be different, in order to improve the versatility of the simple motor shaft locking device, the fastening hole 101 is a waist-shaped hole, and the insert 20 can be inserted into any position in the length direction of the fastening hole 101 to match the corresponding connecting hole 902.

[0032] Furthermore, in order to prevent the insert 20 from being separated from the fastening hole 101, as shown in FIG. Figure 2 As shown, the two ends of the insert 20 respectively have a cap body portion 201 and a threaded portion (not marked in the figure), and the width of the cap body portion 201 is larger than the width of the fastening hole 101.

[0033] It should be noted that when one end of the insert 20 having the threaded portion passes through the connecting hole 902 and the cap body 201 abuts against the seat body 10, it can be threadedly connected to the threaded portion through a nut, and this nut is abutted against the seat body 10 to prevent the insert 20 from falling out of the connecting hole 902 and the fastening hole 101 in the axial direction of the connecting hole 902.

[0034] Furthermore, if Figure 4 As shown, the middle piece 102A has several weight-reducing holes 102A2. On the one hand, the weight-reducing holes 102A2 reduce the weight of the middle piece 102A. On the other hand, when the middle piece 102A can only be removed from one side of the disassembly hole 103, an external tool, such as a hook, can be inserted into the weight-reducing hole 102A2, and the middle piece 102A can be hooked and pulled outward to remove the middle piece 102A from the disassembly hole 103.

[0035] In summary, the simple motor shaft blocking device based on the embodiment of the present application is explained, which provides the simple motor shaft blocking device with advantages such as no need to move the motor position, small size, and simple structure.

[0036] It is worth mentioning that in the embodiments of the present application, the simple motor shaft stalling device has a simple structure, does not involve complex manufacturing processes and expensive materials, and is highly economical. Furthermore, for manufacturers, the simple motor shaft stalling device provided in the present application is easy to produce and inexpensive, which is more conducive to controlling production costs and further promoting product promotion and use.

[0037] Those skilled in the art will appreciate that the embodiments of the present invention described above and shown in the accompanying drawings are provided for illustrative purposes only and are not intended to limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and illustrated in the embodiments. Any variations or modifications may be made to the embodiments of the present invention without departing from these principles.

Claims

1. A simple motor shaft locking device, mounted on an electric motor, wherein the electric motor comprises an output shaft and a plurality of connecting holes, wherein the side surface of the output shaft has a plurality of keyways arranged in an annular shape, and wherein: The simple motor shaft blocking device includes A seat body, the seat body having a fastening hole and a locking portion, the locking portion having a through hole, and the hole wall of the through hole having a plurality of protruding teeth arranged in an annular shape, the protruding teeth corresponding to the key slots one by one, each protruding tooth being engaged with the corresponding key slot, and the fastening hole being directly opposite to the connecting hole; as well as A fastener assembly includes an insert that passes through the fastening hole and the connecting hole in sequence.

2. The simple motor shaft blocking device according to claim 1, characterized in that: The base bodies each have a disassembly hole, the engaging portion is an intermediate piece, the intermediate piece is placed in the disassembly hole and is detachably connected to the base body, and the intermediate piece has the through hole.

3. The simple motor shaft blocking device according to claim 2, characterized in that: The hole wall of the disassembly hole has a plurality of through holes, and the through holes extend from the hole wall of the disassembly hole to the side wall of the seat body. The side wall of the intermediate piece has a plurality of threaded holes, and the threaded holes correspond one-to-one to the through holes. When the protruding teeth are embedded in the keyway, the threaded holes are opposite to the through holes. The fastener combination also includes a plurality of bolts, and each of the bolts is threadedly connected to the corresponding threaded hole after passing through the corresponding through hole.

4. The simple motor shaft blocking device according to any one of claims 1 to 3, characterized in that: The fastening hole is a waist-shaped hole.

5. The simple motor shaft blocking device according to claim 4, characterized in that: The two ends of the insert respectively have a cap body portion and a threaded portion, and the width of the cap body portion is greater than the width of the fastening hole.

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