An electromagnetic brake structure

Abstract

The utility model discloses an electromagnetic brake structure, including an electromagnetic brake assembly and an encoder installed on a motor, wherein the motor, the electromagnetic brake assembly and the encoder are coaxially connected in sequence, the encoder is installed at one end of the electromagnetic brake assembly, and the motor shaft of the motor passes through the other end of the electromagnetic brake assembly and approaches the encoder; the electromagnetic brake assembly is used to brake the motor shaft when the power is off to achieve parking, and vice versa, release the brake when the power is on. By improving the electromagnetic brake structure, the motor, the electromagnetic brake assembly and the encoder are coaxially arranged and connected in sequence, and the motor shaft approaches the encoder after passing through the electromagnetic brake part, realizing a three-in-one layout of an integrated electric drive structure, with higher integration and space utilization.

Description

Technical Field

[0001] The utility model relates to the technical field of lawn mowers, in particular to an electromagnetic brake structure. Background Art

[0002] There are many types of lawn mowers. One of the most commonly used types is the riding lawn mower, also known as a riding lawn mower. It is a large mechanical tool used to trim lawns and vegetation. It is widely used in real life. The use of lawn mowers not only saves a lot of labor time, but also makes the lawn more beautiful after trimming. It is a very practical mechanical tool.

[0003] In the related art, electromagnetic brake structures have begun to be introduced on riding lawn mowers to achieve parking and unparking of the lawn mower. However, when the electromagnetic brake structure in the prior art is installed on the motor, the integration between the electromagnetic brake structure and the encoder, a key component on the motor, is low, and the overall volume of the electromagnetic brake, encoder and motor is large, and the space utilization rate is not high. Utility Model Content

[0004] The purpose of the utility model is to solve one of the technical problems in the related art to a certain extent at least. In view of this, an electromagnetic brake structure is provided, including an electromagnetic brake assembly and an encoder installed on a motor, the motor, the electromagnetic brake assembly and the encoder are coaxially connected in sequence, the encoder is installed at one end of the electromagnetic brake assembly, and the motor shaft of the motor is inserted into the other end of the electromagnetic brake assembly and approaches the encoder; the electromagnetic brake assembly is used to brake the motor shaft to achieve parking when the power is off, and vice versa to release the brake when the power is on.

[0005] Compared with the prior art, the technical solution of the utility model has the following advantages: by improving the electromagnetic brake structure, the motor, electromagnetic brake assembly and encoder are coaxially arranged and connected in sequence, and the motor shaft approaches the encoder after passing through the electromagnetic brake part, realizing a three-in-one layout of the integrated electric drive structure, with higher integration and space utilization.

[0006] According to an example of the utility model, the encoder includes a disc-shaped shell with an open end, the open end of the disc-shaped shell is sleeved on the electromagnetic brake assembly, a plurality of long strip-shaped fixing plates are provided on the circumferential side of the disc-shaped shell, the fixing plates are detachably connected to the electromagnetic brake assembly through fasteners, and a wiring groove is provided on the side wall of the disc-shaped shell for leading out the encoder wires.

[0007] According to an example of the present invention, the wire harness of the electromagnetic brake assembly is directly externalized or integrated with the wire harness of the motor or passes through the wiring groove synchronously with the encoder wire.

[0008] According to an example of the utility model, three fixing plates are provided, and the three fixing plates are arranged at equal intervals along the circumference of the disc-shaped housing.

[0009] According to an example of the utility model, a brake lever is installed on the electromagnetic brake assembly, and the brake lever is connected to the brake pad in the electromagnetic brake assembly, and is used to drive the brake pad in the electromagnetic brake assembly to disengage from the brake to release the brake under the action of external force.

[0010] According to an example of the utility model, the brake lever is linearly mounted on the outer wall of the electromagnetic brake assembly, and the brake lever is controlled to be laterally displaced away from the motor to cause the brake pad to disengage; or, the brake lever is rotationally mounted on the outer wall of the electromagnetic brake assembly, and the middle part of the brake lever is connected to the brake pad via a connecting piece, and the brake lever is controlled to rotate to drive the brake pad to disengage via the connecting piece.

[0011] According to an example of the utility model, the brake lever includes an arc-shaped frame covering the outer wall of the electromagnetic brake assembly, the two ends of the arc-shaped frame are respectively connected to the end outer wall of the electromagnetic brake assembly close to the encoder through fasteners, and a lever extending outward away from the electromagnetic brake assembly is installed in the middle of the arc-shaped frame, and the lever is externally connected to the hand lever of the mowing equipment through a cable.

[0012] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 This is a first orientation structural diagram of an electromagnetic brake structure of the utility model.

[0015] Figure 2 This is a second orientation structural diagram of an electromagnetic brake structure of the utility model.

[0016] Figure 3 It is a partial structural schematic diagram of the encoder of the utility model.

[0017] Figure 4 The utility model is a structural schematic diagram of a brake lever.

[0018] Among them, the figures are marked as: 1, motor, 2, electromagnetic brake assembly, 3, encoder, 3a, disc-shaped housing, 3b, fixing plate, 4, wiring groove, 5, brake lever, 5a, arc frame, 5b, lever. DETAILED DESCRIPTION

[0019] The embodiments of the present invention are described in detail below, and 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 to be used to explain the present invention, and should not be construed as limiting the present invention. Example

[0020] See also Figure 1~Figure 4 As shown, the utility model provides an electromagnetic brake structure, including an electromagnetic brake assembly 2 and an encoder 3 installed on a motor 1. The motor 1, the electromagnetic brake assembly 2 and the encoder 3 are coaxially connected in sequence. The encoder 3 is installed at one end of the electromagnetic brake assembly 2, and the motor shaft of the motor 1 penetrates from the other end of the electromagnetic brake assembly and approaches the encoder 3; the electromagnetic brake assembly 2 is used to brake the motor shaft to achieve parking when the power is off, and vice versa to release the brake when the power is on.

[0021] In this embodiment, by improving the electromagnetic brake structure, the motor 1, the electromagnetic brake assembly 2 and the encoder 3 are coaxially arranged and connected in sequence. The motor shaft approaches the encoder 3 after passing through the electromagnetic brake part, realizing a three-in-one layout of the integrated electric drive structure, with higher integration and space utilization.

[0022] The electromagnetic brake structure and its working principle are well known in the industry and will not be described in detail here. In this embodiment, the electromagnetic brake assembly can be an electromagnetic brake installed at the tail end of the motor, for example, including a housing, a brake pad, a sleeve mounted on the motor shaft, a brake, etc. The electromagnetic brake is controlled in conjunction with the motor. When the joystick on the riding lawn mower is operated normally to move forward, backward, or turn, the electromagnetic brake is energized and attracted. At this time, the electromagnetic brake at the motor shaft is disconnected and does not brake the motor. When the user controls any joystick to trigger the zero position switch, the electromagnetic brake is controlled to be powered off. At this time, the brake pad resets the brake motor shaft under the action of the spring, and the motor is powered off. At this time, the riding lawn mower achieves braking and parking effects.

[0023] In this embodiment, the encoder 3 can be a sine wave encoder, which is adapted to be installed at the tail end of the motor and electromagnetic brake assembly, and is used to convert the speed, position, angle and other information of the motor shaft when the motor is running into electrical signals, providing sensor data for subsequent signal processing and analysis.

[0024] In this embodiment, the encoder 3 includes a disc-shaped shell 3a with an opening at one end, and the open end of the disc-shaped shell 3a is sleeved on the electromagnetic brake assembly 2. A plurality of long strip-shaped fixing plates 3b are provided on the circumference of the disc-shaped shell 3a. The fixing plates 3b are detachably connected to the electromagnetic brake assembly 2 through fasteners, and a wiring groove 4 for leading out the encoder wire is provided on the side wall of the disc-shaped shell 3a. Preferably, the wire bundle of the electromagnetic brake assembly 2 can be directly externalized and laid out independently of the motor 1 and the encoder 2. It can also be integrated with the wire bundle of the motor 1 or laid out synchronously with the encoder wire through the wiring groove 4 to regularize the wire bundle and improve space utilization. Preferably, the aforementioned fixing plates 3b are provided with three pieces, and the three fixing plates 3b are arranged at equal intervals along the circumference of the disc-shaped shell 3a. The multi-fixed point design makes the installation of the encoder more stable.

[0025] As one of the optimized designs, a brake lever 5 is installed on the electromagnetic brake assembly 2. The brake lever 5 is connected to the brake pad in the electromagnetic brake assembly 2 and is used to drive the brake pad in the electromagnetic brake assembly 2 to disengage from the brake under the action of external force to release the brake. This design is used when the lawn mower has no power and the walking mechanism is locked by the power-off brake and cannot be pushed freely. In order to facilitate the free pushing of the machine in the event of a power outage, the brake lever 5 is designed to manually release the parking brake.

[0026] Specifically, as one of the implementation means, the above-mentioned brake lever 5 can be linearly movable installed on the outer wall of the electromagnetic brake assembly, and the brake pad is disengaged from the brake disc on the motor shaft by controlling the brake lever 5 to be laterally displaced away from the motor 1; or, as another implementation means, the brake lever 5 is rotatably installed on the outer wall of the electromagnetic brake assembly 2, and the middle part of the brake lever 5 is connected to the brake pad inside the brake assembly through a connecting piece, and the brake lever 5 is controlled to rotate to drive the brake pad to be disengaged from the brake disc on the motor shaft through the connecting piece.

[0027] As one design form, the brake lever 5 includes an arc frame 5a covering the outer wall of the electromagnetic brake assembly 2. The two ends of the arc frame 5a are respectively connected to the outer wall of the end of the electromagnetic brake assembly 2 close to the encoder 3 through fasteners. The middle part of the arc frame 5a is equipped with a lever 5b extending outward away from the electromagnetic brake assembly 2. The lever 5b is connected to the hand lever of the mowing equipment through a cable. The hand lever drives the zipper, and the zipper drives the brake lever 5 to separate the brake pads to release the braking effect.

[0028] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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 or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

[0030] For those skilled in the art, various changes and modifications will undoubtedly be obvious after reading the above description. Therefore, the attached claims should be regarded as covering all changes and modifications to the true intent and scope of the utility model. Any and all equivalent ranges and contents within the scope of the claims should be considered to still be within the intent and scope of the utility model.

Claims

1. An electromagnetic brake structure, comprising an electromagnetic brake assembly (2) and an encoder (3) mounted on a motor (1), characterized in that: The motor (1), the electromagnetic brake assembly (2) and the encoder (3) are coaxially connected in sequence; the encoder (3) is mounted on one end of the electromagnetic brake assembly (2); the motor shaft of the motor (1) penetrates from the other end of the electromagnetic brake assembly (2) and approaches the encoder (3); the electromagnetic brake assembly (2) is used to brake the motor shaft to achieve parking when power is off, and to release the brake when power is on.

2. The electromagnetic brake structure according to claim 1, characterized in that: The encoder (3) comprises a disc-shaped housing (3a) with an opening at one end, the open end of the disc-shaped housing (3a) being sleeved on the electromagnetic brake assembly (2), a plurality of long strip-shaped fixing plates (3b) being provided on the circumference of the disc-shaped housing (3a), the fixing plates (3b) being detachably connected to the electromagnetic brake assembly (2) via fasteners, and a wiring groove (4) penetrating therethrough for leading out the wires of the encoder (3) being provided on the side wall of the disc-shaped housing (3a).

3. The electromagnetic brake structure according to claim 2, characterized in that: The wire harness of the electromagnetic brake assembly (2) is directly externally mounted or integrated with the wire harness of the motor (1) or passes through the wiring groove (4) synchronously with the wire harness of the encoder (3).

4. The electromagnetic brake structure according to claim 2, characterized in that: Three fixing plates (3b) are provided, and the three fixing plates (3b) are arranged at equal intervals along the circumference of the disc-shaped housing (3a).

5. The electromagnetic brake structure according to claim 1, characterized in that: A brake lever (5) is mounted on the electromagnetic brake assembly (2); the brake lever (5) is connected to a brake pad in the electromagnetic brake assembly (2) and is used to drive the brake pad in the electromagnetic brake assembly (2) to disengage from the brake under the action of an external force to release the brake.

6. The electromagnetic brake structure according to claim 5, characterized in that: The brake lever (5) is linearly mounted on the outer wall of the electromagnetic brake assembly (2), and the brake lever (5) is controlled to move laterally away from the motor (1) to cause the brake pad to disengage; or, the brake lever (5) is rotationally mounted on the outer wall of the electromagnetic brake assembly (2), and the middle part of the brake lever (5) is connected to the brake pad via a connecting piece, and the brake lever (5) is controlled to rotate to drive the brake pad to disengage via the connecting piece.

7. The electromagnetic brake structure according to claim 5, characterized in that: The brake lever (5) comprises an arc frame (5a) covering the outer wall of the electromagnetic brake assembly (2), the two ends of the arc frame (5a) being connected to the outer wall of the end of the electromagnetic brake assembly (2) close to the encoder (3) through fasteners, and a lever (5b) extending outward away from the electromagnetic brake assembly (2) is installed in the middle of the arc frame (5a), and the lever (5b) is externally connected to the hand lever of the mowing equipment through a cable.

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