Split type encoder with protection structure

Abstract

The utility model relates to the technical field of split type encoders, in particular to a split type encoder with a protection structure, which comprises a main body, a main shaft and a grating, the side surface of the main shaft is provided with an annular grating mounting groove for mounting the grating, and the depth of the grating mounting groove is designed to be larger than the thickness of the grating. The upper end of the main shaft is designed to be of an upright step-shaped boss structure, the upper end of the main body is designed to be of an inverted step-shaped boss structure, and the inverted step-shaped boss structure is matched with the upright step-shaped boss structure of the main shaft, so that an installation gap between the main shaft and the main body is a step-shaped seam, and the main shaft and the main body can be effectively protected. The design is helpful for improving the sealing performance and reducing dust, impurities and the like from entering and polluting the grating. According to the utility model, the protection of the grating is effectively enhanced, and the service life of the encoder is prolonged.

Description

Technical Field

[0001] This utility model belongs to the technical field of split encoders, and in particular relates to a split encoder with a protective structure. Background Technology

[0002] Encoders are classified into integral and split types according to their structure. With the popularization of concepts such as automation, intelligence, and miniaturization, split encoders are welcomed by a wide range of users. Compared with integral encoders, split encoders have no built-in bearings and are directly connected to the motor. Due to their compact size, the encoder's moment of inertia is very low, ensuring that the system positioning can achieve minimum torque and maximum speed regardless of where it is installed. Furthermore, they eliminate the need for couplings, avoiding transmission errors caused by couplings.

[0003] However, compared to integrated encoders, split encoders have their gratings completely exposed during installation and debugging, making them susceptible to damage from bumps and scratches. During use, without the protection of an integrated casing, the gratings are easily contaminated by dust and impurities, leading to encoder alarm failure. Utility Model Content

[0004] In view of this, the present invention aims to provide a split encoder with a protective structure. By designing a grating mounting groove on the side of the main shaft, the grating is effectively wrapped by the outer edge of the grating mounting groove, which solves the problems of the grating being completely exposed in traditional split encoders and the outer edge being easily bumped or scratched, thus extending the service life of the encoder.

[0005] To achieve the above objectives, the technical solution created by this utility model is implemented as follows:

[0006] This utility model provides a split encoder with a protective structure, including: a main body, a main shaft and a grating, wherein the side of the main shaft is provided with an annular grating mounting groove, the grating is disposed in the grating mounting groove, and the depth of the grating mounting groove is greater than the thickness of the grating.

[0007] The upper end of the spindle is an upright stepped boss structure, and the upper end of the main body is an inverted stepped boss structure that matches the upright stepped boss structure. The installation gap between the main body and the spindle is a stepped seam.

[0008] Preferably, the main body includes: a housing, and a light source and a reading circuit disposed within the housing.

[0009] Preferably, both the upright stepped boss structure and the inverted stepped boss structure are provided with a first-stage boss, and the installation gap between the main body and the main shaft is a Z-shaped seam.

[0010] Preferably, the grating mounting slot is integrally formed with the spindle.

[0011] Preferably, the grating is a reflective grating.

[0012] Compared with the prior art, the present invention can achieve the following beneficial effects:

[0013] This invention features a grating mounting groove on the spindle of a split encoder, effectively enclosing the grating with the outer edge of the mounting groove. This effectively solves the problem of the grating being completely exposed and the outer edge being easily damaged by bumps and scratches in traditional split encoders. This design not only protects the grating but also extends the encoder's service life.

[0014] In addition, the grating mounting slot is integrated with the main shaft. The grating is installed in the grating mounting slot, which can effectively avoid the grating from becoming misaligned with the main shaft due to collisions during use, thus avoiding eccentricity errors. The design of the grating mounting slot can not only reduce the risk of grating damage and improve the overall performance and durability of the encoder, but also avoid the problem of reduced reading accuracy due to grating displacement after encoder debugging.

[0015] This invention employs a stepped seam design at the relatively fixed position between the main shaft and the main body of the split encoder, which can effectively improve the problem of dust, impurities, etc. entering and contaminating the grating, thus reducing the quality of encoder readings. Attached Figure Description

[0016] The accompanying drawings, which form part of this invention, are used to provide a further understanding of this invention. The illustrative embodiments and descriptions of this invention are used to explain this invention and do not constitute an undue limitation of this invention. In the drawings:

[0017] Figure 1 This is a schematic diagram of a split encoder with a protective structure according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the main shaft provided according to an embodiment of the present utility model.

[0019] The reference numerals in the figures include:

[0020] Main spindle 1, main body 2, grating 3, grating mounting groove 4, stepped seam 5, edge guard 6. Detailed Implementation

[0021] To make the purpose, technical solution, and advantages of this utility model clearer, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and do not constitute a limitation thereof. Similar elements in different embodiments are referred to by associated similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of this utility model. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, some operations related to this utility model are not shown or described in the specification. This is to avoid obscuring the core parts of this utility model with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0022] It should be noted that, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other to form various implementation methods. Furthermore, the steps or actions in the method description can be rearranged or adjusted in a manner readily apparent to those skilled in the art. Therefore, the various orders in the specification and drawings are merely for the clear description of a particular embodiment and do not imply a mandatory order, unless otherwise stated that a particular order must be followed.

[0023] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for 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. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] Please see Figure 1 In one embodiment of this utility model, a split encoder with a protective structure is provided, mainly to improve the protection of the grating 3 and solve the problems of fragile and easily contaminated gratings in existing split encoders. Specifically, the split encoder includes: a main shaft 1, a main body 2, and a grating 3. The main shaft 1 is the rotating part of the split encoder, and during the assembly and use of the encoder, the main shaft 1 is installed on the motor shaft that needs to be measured. The grating 3 is installed on the side of the main shaft 1, and the rotation of the main shaft 1 drives the grating 3 to rotate. The main body 2 is the non-rotating part of the split encoder, which includes a housing and devices such as a light source, a receiver, and a reading circuit disposed within the housing. The main shaft 1 and the main body 2 are a split structure. During installation, the main shaft 1 is installed on the motor shaft, and the main body 2 is relatively fixed to the main shaft 1 by a fixing component.

[0027] The working principle of the split encoder is as follows: light rays are emitted from the light source inside the main body 2 and illuminate the grating 3. The grating 3 is a reflective grating. The light rays reflected by the grating 3 are received by the receiver, and the optical signal is read through the reading circuit to realize the encoding and counting.

[0028] In traditional split-type encoders, the grating 3 is directly fixed to the main shaft 1, and there is no protective structure on the sides and surface of the grating 3, especially its outer edge. During installation and debugging, the outer edge of the grating 3 is easily bumped, causing damage to the outer edge of the grating 3. Collisions can even cause the physical center of the grating 3 to shift relative to the main shaft 1, resulting in eccentricity errors that affect the encoder's reading accuracy. Therefore, this embodiment of the invention optimizes the structure of the main shaft 1 by integrally fabricating an annular grating mounting groove 4 on the side of the main shaft 1. Please refer to [link / reference] for details. Figure 2The grating 3 is installed in the grating mounting groove 4. The depth of the grating mounting groove 4 is required to be slightly greater than the thickness of the grating 3, so that the retaining edge 6 on the outer edge of the grating mounting groove 4 can completely cover the outer edge of the grating 3. Compared with the traditional grating 3 whose outer edge is directly exposed, which is prone to chipping during installation and debugging and thus cannot be used, the spindle 1 with retaining edge 6 designed in this embodiment can more effectively protect the grating 3 and also avoid external impacts that cause the grating 3 to cause eccentric displacement.

[0029] Furthermore, to reduce the impact of dust, impurities, and other contaminants on the grating 3, this embodiment of the invention optimizes the installation gap structure between the main shaft 1 and the main body 2, reducing the amount of contaminants entering the encoder through the installation gap and affecting the reading quality of the grating 3. Specifically, the upper end of the main shaft 1 is designed as an upright stepped boss structure, meaning the diameter of the upper end of the main shaft 1 gradually decreases in a stepped manner. Correspondingly, the upper end of the main body 2 is designed as an inverted stepped boss structure, meaning the diameter of the upper end of the main body 2 gradually increases in a stepped manner. The upright stepped boss structure at the upper end of the main shaft 1 and the inverted stepped boss structure at the upper end of the main body 2 work together to form a stepped seam 5 between the main shaft 1 and the main body 2, thereby reducing the amount of impurities and dust entering the encoder.

[0030] The number of steps in the upright stepped boss structure and the inverted stepped boss structure can be designed according to the protection level. In this embodiment of the invention, only one-step boss is provided, that is, the upper diameter of the main shaft 1 and the main body 2 changes only once in a stepped manner. At this time, the installation gap between the main shaft 1 and the main body 2 is a Z-shaped seam.

[0031] The split encoder with protective structure designed in this utility model has a simple structure. The grating mounting slot 4 can provide necessary protection without adding extra complexity, and it can reduce the contamination problem of the grating 3 without the need for a complex sealing or filtration system. This utility model has extremely high practical and economic value, and has achieved good protective effect in internal testing.

[0032] In summary, the above description is merely a preferred embodiment of this specification and is not intended to limit the scope of protection of this specification. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this specification should be included within the scope of protection of this specification.

[0033] The systems, apparatuses, modules, or units described in one or more of the above embodiments may be implemented by a computer chip or entity, or by a product having a certain function. A typical implementation device is a computer. Specifically, a computer may be, for example, a personal computer, a laptop computer, a cellular phone, a camera phone, a smartphone, a personal digital assistant, a media player, a navigation device, an email device, a game console, a tablet computer, a wearable device, or any combination of these devices.

[0034] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0035] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0036] The foregoing has described specific embodiments of this specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims may be performed in a different order than that shown in the embodiments and may still achieve the desired result. Furthermore, the processes depicted in the drawings do not necessarily require the specific or sequential order shown to achieve the desired result. In some embodiments, multitasking and parallel processing are possible or may be advantageous.

Claims

1. A split-type encoder with a protective structure, characterized in that, include: The main body, the main shaft, and the grating are provided, wherein the side of the main shaft is provided with an annular grating mounting groove, the grating is disposed in the grating mounting groove, and the depth of the grating mounting groove is greater than the thickness of the grating; The upper end of the spindle is an upright stepped boss structure, and the upper end of the main body is an inverted stepped boss structure that matches the upright stepped boss structure. The installation gap between the main body and the spindle is a stepped seam.

2. The split encoder with a protective structure as described in claim 1, characterized in that, The main body includes: a housing, and a light source, a receiver, and a reading circuit disposed within the housing.

3. The split encoder with a protective structure as described in claim 1, characterized in that, Both the upright stepped boss structure and the inverted stepped boss structure are provided with a first-stage boss, and the installation gap between the main body and the main shaft is a Z-shaped seam.

4. The split encoder with a protective structure as described in claim 1, characterized in that, The grating mounting slot is integrally formed with the main shaft.

5. The split encoder with a protective structure as described in claim 1, characterized in that, The grating is a reflective grating.

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