Encoder support suitable for different shaft lengths

Abstract

The utility model discloses an encoder support suitable for different axial lengths, comprising a support main body, the support main body is oppositely provided with a first installation surface and a second installation surface, and the first installation surface and the second installation surface are respectively provided with a connecting piece used for installing a PCBA board; a first supporting part and a second supporting part are respectively arranged below the first mounting surface and the second mounting surface, the vertical height between the first mounting surface and the bottom surface of the second supporting part is X, the vertical height between the second mounting surface and the bottom surface of the first supporting part is Y, and X is not equal to Y; a boss is arranged on the outer side of the support body, a through hole is formed in the boss, and the support body is of an integrally-formed structure. The utility model is suitable for the use requirements of encoders with different installation heights.

Description

TECHNICAL FIELD

[0001] The utility model relates to encoder technical field especially a kind of encoder support for different shaft length. BACKGROUND

[0002] As the key component in motor position detection system, encoder is widely used in various servo motors. Industrial-grade rotary encoder is usually fixed on the tail of motor through mounting bracket, connected with motor shaft to realize angle or speed detection. However, due to the difference in tail shaft length of different models or brands of motor, the relative position between encoder and motor needs to be adjusted during installation to ensure its detection accuracy and stability.

[0003] To solve this problem, some solutions in the industry have tried to realize the installation of encoders with different shaft lengths through a universal structure. For example, Chinese patent application publication No. CN 210400436U, entitled "Encoder support for adapting to multiple shaft heights", discloses a structure for adapting to different motor shaft heights by providing multiple fixed parts with different heights. Multiple fixed parts are arranged on the encoder ring frame, and the ear-shaped structure of the encoder circuit board cooperates with the connectors of different heights to adapt to motors with different shaft lengths.

[0004] However, this technical solution has several significant shortcomings. First, the circuit board mentioned in this solution is mainly a PCB board, which does not fully consider the PCBA structure (i.e. a circuit assembly board with specific component layout and interface structure) widely used in modern encoder components. PCBA boards usually have higher requirements for positioning accuracy and assembly method. Second, this solution realizes the installation and positioning of the bracket and circuit board through external circular fitting. This structure is affected by factors such as bracket machining precision and motor end cover installation error in actual application, resulting in cumulative radial deviation and making it difficult to achieve precise and controllable concentricity, which further affects the detection performance of the encoder. As concentricity is a key parameter of encoder performance, once it deviates, it is difficult to correct through post-calibration methods, which may cause signal response errors, accuracy degradation, etc. Third, in this solution, the encoder circuit board is usually bonded to the bracket through glue, and the bracket is fixed and installed with the motor rear end cover. This method may cause axial tilt of the circuit board during glue curing, and the chip installation angle error will also be amplified, which further affects the sensing accuracy of the magnetic field or light source and weakens the product performance stability. At the same time, this technology mainly selects the installation surface through a single installation direction, lacks bidirectional adaptation capability after structure flipping, and cannot meet the actual needs of installation direction flexibility and space compatibility of some equipment.

[0005] On this basis, Chinese patent application announcement No. CN 112713718A, entitled "Support, encoder assembly and motor assembly", also proposes a structure design that can adapt to different motor shaft heights. Its specific embodiment seven sets up multiple fixed parts with different heights on the two end faces of the support body, and the circuit board can be installed on any end face according to the needs, thereby realizing the adaptation of multiple installation heights. This scheme mainly targets the PCBA board, and to some extent, improves the flexibility of the installation method, but the PCBA board needs to be set with a positioning gap when installed, and needs to be aligned one by one with multiple limiting structures on the support, and then connected through fasteners. The whole process needs to strictly align all concave-convex matching points, which not only reduces the universality of the support structure, but also affects the efficiency and convenience of assembly. In addition, its height difference adjustment method is realized by setting multiple installation platforms with different heights on the two installation surfaces, and each platform individually supports the circuit board, and the platform height constitutes the installation height difference. But this way causes the support structure to be scattered in multiple points, and the overall stability is limited.

[0006] Therefore, it is still necessary to provide an encoder support with strong structure universality, high positioning concentricity, convenient assembly and strong overall stability. Utility model content

[0007] The technical problem to be solved by the utility model is to overcome the deficiencies in the prior art, provide an encoder support that adapts to different shaft lengths, the support has two optional installation surfaces, can realize the adaptation to different shaft length motors by turning over the support body, at the same time, the support has a connecting piece suitable for the PCBA board, improves the installation positioning precision, and the assembly method is simple, thereby improving the installation efficiency and reducing the risk of misinstallation, further, the support constitutes a continuous support base surface through the overall height difference of the two support parts, realizes the adjustment of the encoder height position in the overall surface support mode, which is different from the support mode of setting multiple height platforms, thereby improving the structural stability, in addition, the connecting piece used by the support needs to realize the concentric cooperation with the PCBA board, avoids the accumulation of installation errors caused by the external circle cooperation, thereby helps to ensure the performance precision of the encoder during operation, furthermore, the support needs to realize the independent fixed installation of the PCBA board and the support body in the structural design, further enhances the system stability and reliability.

[0008] The utility model discloses a technical scheme that solves its technical problem is adopted: a kind of encoder support for different shaft length, including support main body, the support main body is oppositely provided with first mounting surface and second mounting surface, the first mounting surface and second mounting surface are all provided with the connecting piece for installing PCBA board;The support main body is provided with first support part around first mounting surface, and is provided with second support part around second mounting surface;The vertical height between first mounting surface and second support part bottom surface is X, the vertical height between second mounting surface and first support part bottom surface is Y, and X and Y are not equal.

[0009] The connecting piece includes limiting protrusion, mounting through hole and connecting surface, and the limiting protrusions are oppositely arranged to cooperate with the corresponding opening structure of the PCBA board for positioning.

[0010] Further, the first support part and the second support part are different in height, thereby forming different vertical heights of the first mounting surface and the second mounting surface relative to the respective end surfaces.

[0011] Further, the first support part and the second support part are both non-continuous annular structures, and are arranged at intervals along the circumferences of the respective corresponding mounting surfaces.

[0012] Further, the support main body has a ring-like structure, and a boss is oppositely arranged on the outer side of the support main body in the radial direction.

[0013] The utility model has the advantages that:

[0014] By arranging the first mounting surface and the second mounting surface oppositely on the support main body, the PCBA board can be installed by flipping the support to select different mounting surfaces, thereby adapting to motors with different shaft lengths and improving the versatility and adaptability of the support.

[0015] The utility model has a double-mounting surface structure design, which makes the support installation direction more flexible, can select a suitable mounting surface according to the actual space conditions, improves the compatibility of the assembly space, and meets the requirements of more equipment structures.

[0016] The utility model is provided with connecting pieces on the two mounting surfaces, which include oppositely arranged limiting protrusions, mounting through holes and support parts, can accurately position and stably install the PCBA board, improve the installation positioning precision, effectively improve the concentricity positioning precision between the encoder and the motor shaft, and guarantee the signal accuracy and system performance stability during product operation.

[0017] The utility model discloses a relative distribution's limiting protrusion, installation through -hole and support part are set up on the mounting surface, do not need to rely on the specific structure cooperation of PCBA board side, can realize effective positioning and fixed, thereby simplifying the connection cooperation condition, make the assembly more convenient.

[0018] The utility model discloses a first support part and second support part of different heights are arranged, make the overall support base surface height of the rear mounting surface of turnover support change, differ from the height difference mode of the partial platform of multiple groups of splicing in prior art, possess the advantages of strong structure integrity, high structural stability. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the overhead structure schematic diagram of the utility model;

[0020] Figure 2 It is the overhead structure schematic diagram of the utility model Figure 1 It is the section structure schematic diagram of the utility model along A-A direction;

[0021] Figure 3 It is the first mounting surface angle three -dimensional structure schematic diagram of the utility model;

[0022] Figure 4 It is the second mounting surface angle three -dimensional structure schematic diagram of the utility model;

[0023] In the drawing, 1 is support body;2 is first mounting surface;3 is second mounting surface;4 is connecting piece;41 is limiting protrusion;42 is installation through -hole;5 is first support part;6 is second support part;7 is boss;71 is through -hole. DETAILED DESCRIPTION

[0024] Now the utility model is further explained in conjunction with the drawings. These drawings are all simplified schematic diagrams and only show the basic structure of the utility model in a schematic way, therefore it only shows the structure related to the utility model.

[0025] As Figure 1 And Figure 2 The utility model provides a kind of encoder support for different shaft length, including support body 1. Support body 1 is annular structure as a whole, center is provided with the center hole for motor shaft to pass through.

[0026] The two ends of the support body 1 are respectively provided with a first mounting surface 2 and a second mounting surface 3, and the two mounting surfaces are oppositely arranged and used for selecting one of them for fixing the PCBA board according to different installation requirements. The first support part 5 is arranged around the peripheral area of the first mounting surface 2, and the second support part 6 is arranged around the peripheral area of the second mounting surface 3, and the two support parts respectively extend outward in the axial direction from the corresponding mounting surface to form a support base surface during installation. The axial height of the first support part 5 and the second support part 6 is different. Specifically, as shown in Figure 2 The vertical height formed by extending from the first mounting surface 2 in the axial direction to the bottom surface of the second support part 6 is denoted as X, and the vertical height formed by extending from the second mounting surface 3 in the axial direction to the bottom surface of the first support part 5 is denoted as Y. Since the heights of the two support parts are different, X and Y are not equal, so that the installation height of the encoder is changed to adapt to motors with different shaft lengths.

[0027] In order to more clearly understand the structure and use mode of the utility model, the following will be described in combination with Figure 3 and Figure 4 two typical installation states, specifically including embodiment one and embodiment two.

[0028] Embodiment one

[0029] As shown in Figure 3 , in this embodiment, the support body 1 is installed in a normal manner, that is, the first mounting surface 2 faces upward, and the second mounting surface 3 faces downward. At this time, the first support part 5 around the first mounting surface 2 serves as the upper edge of the support, and the second support part 6 serves as the contact surface of the support bottom and the motor. Since the vertical height X from the first mounting surface 2 to the bottom surface of the second support part 6 is greater than Y, this installation state is suitable for the scene where the motor shaft length is relatively long. By lifting the encoder outward of the motor, the long shaft extension is effectively avoided, and the encoder and the motor shaft are kept in good coaxial connection.

[0030] During specific installation, the first mounting surface 2 is provided with a connecting piece 4, each connecting piece 4 includes a limiting protrusion 41, a mounting through hole 42, and a connecting surface arranged between adjacent mounting through holes. The limiting protrusion 41 is a cylindrical boss structure, which is distributed in the circumferential area of the mounting surface 2, and the number is two, which are arranged in axial symmetry. The mounting through hole 42 is a hole structure, which is arranged in the adjacent area of the limiting protrusion 41, and there are a total of four, which are used for cooperating with the fasteners such as screws. Between the two adjacent mounting through holes 42 without limiting protrusions, an arc-shaped connecting surface is arranged, which extends along the circumference of the mounting surface, and the connecting surface is in the same plane as the mounting surface.

[0031] During installation, the PCBA board has an opening structure on its edge to align with the limiting protrusion 41 for initial precise positioning. At the same time, it is supported by the arc-shaped connecting surface, and then the bolt is inserted through the mounting through hole 42 to lock it to the PCBA board, thus completing precise positioning and fixation.

[0032] In addition, two bosses 7 are radially symmetrically arranged on the outer side of the support body 1. Each boss 7 is a semi-cylindrical block that extends radially from the outer wall of the support body and is structurally integrally formed with the support body. The inside of the boss 7 is provided with a through hole 71 along its axial direction. The through hole 71 penetrates the entire thickness of the boss and extends to the inner side of the support body 1, which facilitates the connection and fixation with the equipment end cover, shell or support base by fasteners such as bolts passing through the boss during installation.

[0033] Example 2

[0034] like Figure 4 As shown, in this embodiment, the bracket body 1 is installed in an inverted manner, with the second mounting surface 3 facing upwards and the first mounting surface 2 facing downwards. At this time, the second support part 6 is located at the upper edge, and the first support part 5 serves as the mounting base surface where the bottom of the bracket contacts the motor end face. Since the vertical height Y from the second mounting surface 3 to the bottom surface of the first support part 5 is less than X, this embodiment is suitable for scenarios where the motor output shaft is relatively short. By lowering the encoder towards the side closer to the motor, the overall installation height of the encoder is effectively shortened, improving structural compactness and installation compatibility.

[0035] In this inverted state, the second mounting surface 3 serves as the PCBA board mounting area, and its structure is identical to that of the first mounting surface 2. It also features matching limiting protrusions, mounting through holes, and connecting surfaces to ensure that the PCBA board can be mounted on the bracket without any discrepancies even when flipped. Through this symmetrical structural design, the bracket maintains equivalent positioning accuracy and connection stability even after flipping, enhancing the overall structure's versatility and adaptability.

[0036] In addition, such as Figure 3 and Figure 4 As shown, both the first support portion 5 and the second support portion 6 are discontinuous annular structures, spaced circumferentially along their respective mounting surfaces, and do not form corresponding openings on the same axial projection. Specifically, each support portion has a larger interval and a smaller interval, with the larger interval of the first support portion 5 corresponding to the smaller interval of the second support portion 6, and vice versa, forming a staggered arrangement. This arrangement avoids interference problems during assembly of a completely closed annular support structure, improving the compatibility and operability of the installation space; furthermore, the staggered arrangement helps to disperse stress concentration caused by structural symmetry, enhancing the structural balance and support stability of the bracket when it is flipped for use.

[0037] The above-mentioned embodiments only illustrate the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. An encoder bracket adaptable to different shaft lengths, comprising a bracket body, characterized in that: The bracket body has a first mounting surface and a second mounting surface arranged opposite to each other. Both the first mounting surface and the second mounting surface are provided with connectors for mounting PCBA boards. The bracket body has a first support portion around the first mounting surface and a second support portion around the second mounting surface. The vertical height between the bottom surface of the first mounting surface and the second support portion is X, and the vertical height between the bottom surface of the second mounting surface and the first support portion is Y, and X and Y are not equal.

2. The encoder bracket adaptable to different shaft lengths according to claim 1, characterized in that: The connector includes a limiting protrusion, a mounting through hole, and a connecting surface. The limiting protrusion is positioned opposite to each other and is used to cooperate with the corresponding opening structure of the PCBA board for positioning. The mounting through hole is positioned opposite to each other and cooperates with bolts to fix the PCBA board to the mounting surface. The connecting surface is located between adjacent mounting through holes without limiting protrusions and extends circumferentially along the mounting surface to form an arc-shaped support area.

3. The encoder bracket adaptable to different shaft lengths according to claim 1, characterized in that: The first support and the second support have different heights.

4. An encoder bracket adaptable to different shaft lengths according to claim 3, characterized in that: Both the first support and the second support are non-continuous annular structures, and are arranged at circumferential intervals along their respective mounting surfaces, with the first support and the second support being staggered in position.

5. An encoder bracket adaptable to different shaft lengths according to claim 1, characterized in that: The main body of the support is in the form of a ring structure, and a boss extends radially on the outer side of the main body of the support, and a through hole is provided through the boss in the vertical direction.

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