Elastic sheet for preventing forward movement of output shaft from damaging encoder

Abstract

The utility model discloses an elastic sheet for preventing an output shaft from moving forwards to damage an encoder. The elastic piece is used for being installed on a rotating shaft of an encoder, the elastic piece is annular, a circular inner hole is formed in the middle of the elastic piece, the rotating shaft is sleeved with the inner hole, a plurality of evenly-distributed elastic arms extend out of the elastic piece in the circumferential direction, and the elastic arms extend from the inner ring edge of the elastic piece to the outer ring edge of the elastic piece. Wherein the side face of the elastic piece is in an arch shape, all the end portions of the circumference of the elastic piece are bent from the center position to one side, and all the elastic arms are bent from all the end portions of the circumference of the elastic piece to the same side. The elastic piece for preventing the output shaft from moving forwards to damage the encoder can effectively absorb impact force generated when the shaft moves forwards, the shaft is prevented from directly impacting the encoder, it can be ensured that the elastic piece can stably play a role under different working conditions, good elasticity and buffering performance are kept, and the elastic piece is reasonable in assembly, low in cost and high in reliability. And the overall structure and normal operation of the equipment are not influenced.

Description

Technical Field

[0001] This utility model relates to the field of encoders, and in particular to a spring sheet that prevents damage to the encoder from forward movement of the output shaft. Background Technology

[0002] In many devices that involve the operation of a rotary shaft and an encoder, such as motor drive systems and transmission devices in automated production lines, the stable operation of the rotary shaft is crucial to the performance of the equipment and the normal operation of the encoder.

[0003] Currently, some equipment uses simple shoulder positioning or ordinary washers to limit the axial movement of the rotating shaft. However, during equipment operation, when affected by factors such as vibration, impact, or load changes, the rotating shaft may still move forward or backward. Once the shaft moves forward or backward, it is very likely to collide with the encoder, causing damage to the precision components inside the encoder, affecting the measurement accuracy and service life of the encoder, and increasing the maintenance cost and downtime of the equipment. Therefore, it is often necessary to set up measures to prevent the shaft from moving forward or backward.

[0004] Existing technologies for preventing shaft forward and backward movement have many shortcomings in terms of methods, and encoder installation methods often have limited protective effects when facing complex working conditions, making it difficult to completely eliminate damage caused by backward shaft displacement. For example, while using ordinary washers can alleviate axial movement of the shaft to some extent, they lack sufficient elasticity and cushioning capacity, and cannot effectively absorb the impact force generated when the shaft moves forward or backward.

[0005] In addition, some devices do not have dedicated measures to protect the shaft from forward movement, and rely solely on the structure of the encoder itself to resist the effects of the shaft moving backward. This places extremely high demands on the structural strength of the encoder, which greatly shortens the actual service life of the encoder. Utility Model Content

[0006] To address the aforementioned issues, this invention provides a spring sheet that prevents damage to the encoder from forward movement of the output shaft. It effectively absorbs the impact force generated when the shaft moves forward, preventing the shaft from directly impacting the encoder. This ensures that the spring sheet functions stably under different operating conditions, maintaining good elasticity and buffering performance. Furthermore, its assembly is reasonable and does not affect the overall structure and normal operation of the equipment.

[0007] According to one aspect of the present invention, a spring is provided to prevent damage to the encoder caused by forward movement of the output shaft. The spring is used to be mounted on the rotating shaft of the encoder. The spring is annular and has a circular inner hole in the middle for fitting onto the rotating shaft. A plurality of evenly distributed elastic arms extend from the circumference of the spring, each elastic arm extending from the inner ring edge to the outer ring edge of the spring. The side of the spring is arc-shaped, with each end of its circumference bent to one side from the center position, and each elastic arm bent to the same side from each end of the circumference of the spring.

[0008] In some embodiments, the spring is made of spring steel. The advantage is that the spring is generally made of a high-strength, highly elastic metal material.

[0009] In some embodiments, the elastic arm is arc-shaped. Advantageously, the structure of the elastic arm is further described.

[0010] In some embodiments, the elastic arm has a wall hole, and the end of the elastic arm is not formed on the circumference of the spring piece. This is advantageous because both the wall hole and the end hole save material.

[0011] In some embodiments, each end of the spring is bent from the center to one side by a first bend; each elastic arm is bent from each end of the spring to the same side by a second bend. The advantage is that the side structure of the spring is further described.

[0012] In some embodiments, the spring is mounted between the encoder and the shaft shoulder. It is advantageous that the location of the spring mounting is further described. Attached Figure Description

[0013] Figure 1 This is a front view of a spring sheet structure for preventing damage to the encoder from forward movement of the output shaft, according to one embodiment of the present invention.

[0014] Figure 2 for Figure 1 The diagram shows a side view of a spring sheet structure to prevent damage to the encoder from forward movement of the output shaft.

[0015] Figure 3 for Figure 1 The diagram shows an exploded view of the spring plate mounted on the encoder to prevent damage to the encoder from forward movement of the output shaft.

[0016] In the figure: inner hole 1, elastic arm 2, wall hole 3, end hole 4, first bend 5, second bend 6, spring 10, encoder 20, rotating shaft 30, shaft shoulder 40. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings.

[0018] like Figure 1-2 As shown, the spring piece 10 is generally ring-shaped, with a circular inner hole 1 in the middle. Multiple (two are shown as an example in the figure) evenly distributed elastic arms 2 extend from the circumference of the spring piece 10. Each elastic arm 2 is arc-shaped and extends from the inner ring edge to the outer ring edge of the spring piece 10.

[0019] Preferably, the spring 10 is made of a high-strength, high-elasticity metal material, such as spring steel.

[0020] Preferably, wall holes 3 are formed on each elastic arm 2, and more preferably, end holes 4 are also formed on the circumference of the spring piece 10 at the ends where there are no elastic arms 2. By providing wall holes 3 and end holes 4, material can be saved.

[0021] The side of the spring piece 10 is generally arc-shaped. Each end of the circumference of the spring piece 10 (taking the two ends as examples in the attached figure) is bent to one side from the center through a first bending part 5. At the same time, each elastic arm 2 of the spring piece 10 is bent to the same side again from each end of the circumference of the spring piece 10 through a second bending part 6. Thus, a three-segment bending structure is formed on each side of the spring piece 10 with an elastic arm 2.

[0022] like Figure 3 As shown, the spring 10 is mounted on the rotating shaft 30 of the encoder 20. The rotating shaft 30 passes through the inner hole 1 of the spring 10, and positions the spring 10 between the shaft shoulder 40 and the encoder 20. Both provide axial restraint for the spring 10, keeping it stable on the shaft. At this time, since the spring 10 is generally bow-shaped, its elastic arm 2 has a certain gap (about 2-3 mm) with the encoder 20 body, which can serve as a buffer distance.

[0023] During equipment operation, when the rotating shaft 30 tends to move forward, the elastic arm 2 of the spring 10 will be squeezed and deformed. The gap between the spring 10 and the encoder 20 can absorb the squeezing force generated by the forward movement of the rotating shaft 30, thereby avoiding damage to the encoder 20 caused by the forward movement of the rotating shaft 30.

[0024] In actual production and application, the appropriate specifications of the spring 10 should be selected according to the diameter of the rotating shaft 30, the model of the encoder 20, and the working environment of the equipment. For rotating shafts 30 with smaller diameters, lower speeds, and relatively stable working environments, springs 10 with thinner thicknesses and fewer elastic arms 2 can be selected; while for rotating shafts 30 with larger diameters, higher speeds, and more complex working conditions, springs 10 with thicker thicknesses, more elastic arms 2, and superior material properties need to be selected.

[0025] Meanwhile, when installing the spring 10, the installation method should be strictly followed to ensure that the spring 10 is installed firmly and the elastic arms 2 are evenly distributed. The condition of the spring 10 should be checked regularly. If the spring 10 is found to be excessively deformed or its elasticity is weakened, it should be replaced in time to ensure its protective effect.

[0026] The spring piece of this utility model that prevents damage to the encoder from forward movement of the output shaft has the following beneficial effects:

[0027] 1. It can effectively absorb the impact force generated when the shaft moves forward, preventing the shaft from directly hitting the encoder;

[0028] 2. Ensure that the spring can function stably under different working conditions, maintaining good elasticity and cushioning performance;

[0029] 3. How to properly assemble the spring clips with the rotating shaft, encoder, and other components of the equipment without affecting the overall structure and normal operation of the equipment.

[0030] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A spring (10) for mounting on a rotating shaft (30) of an encoder (20) to avoid pre-axial migration damage to the spring, characterized in that: The elastic sheet (10) is annular and has a circular inner hole (1) formed in the middle, the inner hole (1) is used for sleeving the rotating shaft (30), a plurality of elastic arms (2) are uniformly distributed on the circumference of the elastic sheet (10), and each elastic arm (2) extends from the inner ring edge to the outer ring edge of the elastic sheet (10); wherein the side surface of the elastic sheet (10) is arc-shaped, the circumferential ends thereof are bent to one side from the center position, and each elastic arm (2) is bent to the same side from the circumferential ends of the elastic sheet (10).

2. The spring for avoiding the damage to the encoder caused by the forward movement of the shaft according to claim 1, wherein: The elastic sheet (10) is made of spring steel.

3. The spring for avoiding the damage to the encoder caused by the forward movement of the shaft according to claim 1, wherein: The elastic arm (2) is arc-shaped.

4. The spring for avoiding the damage to the encoder caused by the forward movement of the shaft according to claim 1, wherein: A wall hole (3) is arranged on the elastic arm (2), and an end hole (4) is formed at the end of the elastic arm (2) on the circumference of the elastic sheet (10).

5. The spring for avoiding the damage to the encoder caused by the forward movement of the shaft according to claim 1, wherein: Each circumferential end of the elastic sheet (10) is bent to one side from the center position through a first bending portion (5); and each elastic arm (2) is bent to the same side from the circumferential ends of the elastic sheet (10) through a second bending portion (6).

6. The spring for avoiding the damage to the encoder caused by the forward movement of the shaft according to claim 1, wherein: The elastic sheet (10) is installed between the encoder (20) and the shaft shoulder (40).

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