An encoder with a positioning tool

Abstract

The utility model discloses an encoder with positioning tooling, which comprises an encoder body and a positioning pin matched with the encoder body, wherein the encoder body comprises a shell composed of a cover and a bottom plate, and a connecting sleeve arranged in the shell; the connecting sleeve is provided with at least three positioning channels and at least three fixing channels on the peripheral portion; the cover is provided with a plurality of butt channels matched with the positioning channels and the fixing channels; the positioning pin is designed as at least three, and is matched with the positioning channels and the butt channels respectively, and each positioning pin is conical at the butt end of the positioning channel; when positioning, the at least three positioning pins enter into the positioning channels through the butt channels; when moving, the connecting sleeve is affected by the cooperation between the positioning channels and the conical part of the positioning pin, and moves upward; the positioning of the connecting sleeve and the motor shaft is completed by the at least three positioning pins.

Description

Technical Field

[0001] This utility model relates to the field of encoders, specifically an encoder with a positioning fixture. Background Technology

[0002] An encoder is a device that encodes signals (such as bit streams) or data and converts them into a signal form that can be used for communication, transmission, and storage.

[0003] An encoder converts angular displacement or linear displacement into electrical signals; the former is called a code disk, and the latter is called a code ruler.

[0004] Encoders can be divided into two types according to their readout method: contact and non-contact. According to their working principle, encoders can be divided into two types: incremental and absolute.

[0005] An incremental encoder converts displacement into a periodic electrical signal, then converts this electrical signal into counting pulses, using the number of pulses to represent the magnitude of the displacement.

[0006] Each position of an absolute encoder corresponds to a specific digital code, so its reading depends only on the start and end positions of the measurement, and not on the intermediate process of the measurement.

[0007] Currently, during the transportation of encoders, the encoder's code disk and connecting sleeve are generally pressed into a predetermined position using extrusion components to prevent the code disk from rotating during transportation. However, when the encoder is installed after it has been transported to its destination, the connecting sleeve inside the encoder needs to be connected to the motor shaft. Since the positions of the code disk and connecting sleeve have been changed during the initial transportation, the relative positions of the connecting sleeve, code disk, and motor shaft need to be repositioned, which is quite time-consuming. Therefore, it is necessary to design an encoder with a positioning fixture to facilitate the positioning of the relative positions of the connecting sleeve and the motor shaft during encoder installation, thereby facilitating the connection between the connecting sleeve and the motor shaft. Utility Model Content

[0008] Purpose of the utility model: To provide an encoder with a positioning fixture to solve the above-mentioned problems existing in the prior art.

[0009] Technical solution: An encoder with positioning fixture, comprising: The encoder body, and the positioning pin adapted to the encoder body; The encoder body includes a housing consisting of a cover and a base plate, and a connecting sleeve disposed within the housing; The connecting sleeve has at least three positioning channels and at least three fixing channels on its periphery; The cover has multiple docking channels that are compatible with the positioning channel and the fixing channel; The positioning pins are designed to be at least three in number and are adapted to the positioning channel and the docking channel respectively. The docking end of each positioning pin with the positioning channel is tapered. During positioning, at least three positioning pins enter the positioning channel through the docking channel. During movement, the connecting sleeve moves upward due to the interaction between the positioning channel and the tapered part of the positioning pins. The height position of the connecting sleeve is positioned by at least three positioning pins. At the same time, the position of the connecting sleeve and the motor shaft is positioned by at least three positioning pins making low contact with the motor shaft. Finally, the fixing is completed by fixing bolts.

[0010] This invention utilizes positioning and fixing channels on the periphery of the connecting sleeve and a mating channel on the housing. Positioning pins are used to position the connecting sleeve and the motor shaft. During positioning, the motor shaft is inserted into the connecting sleeve, and then the positioning pin is inserted into the positioning channel via the mating channel. As the positioning pin moves, the connecting sleeve moves upward due to the interaction between the positioning channel and the tapered portion of the positioning pin. Positioning of the connecting sleeve is achieved through at least three positioning pins. As the positioning pins continue to advance, they press against the motor shaft, completing the positional positioning of the connecting sleeve and the motor shaft. Finally, the fixing bolts are tightened, and the connection between the fixing bolts and the motor shaft is completed, securing the connecting sleeve to the motor shaft. This method simultaneously achieves both the height positioning of the connecting sleeve and the positioning of the connecting sleeve and the motor shaft. In a further embodiment, a sensor is provided on the base plate.

[0011] In a further embodiment, a fixing bolt is adapted to the fixing channel, and the fixing channel has a thread adapted to the fixing bolt. By designing the fixing bolt, the motor shaft and the connecting sleeve are fixed. During fixing, the motor shaft is inserted into the connecting sleeve, and then the connecting sleeve is positioned to a predetermined position by the cooperation of the positioning pin and the housing. Then, the fixing bolt is screwed into the fixing channel and gradually abuts against the motor shaft to complete the fixing of the motor shaft and the connecting sleeve.

[0012] In a further embodiment, the connecting sleeve is provided with a code disk.

[0013] In a further embodiment, the base plate has a shaft slot, and the connecting sleeve is fitted with a motor shaft. The motor shaft enters the connecting sleeve through the shaft slot and abuts against the fixing bolt.

[0014] In a further embodiment, the top of the cover has a transport slot, and a transport extrusion member is adapted to the transport slot. The transport extrusion member abuts against the connecting sleeve through the transport slot, extruding the connecting sleeve to a predetermined position. The transport extrusion member and the transport slot have mutually compatible threaded grooves, so that the transport extrusion member can be connected to the cover and extruding the connecting sleeve to a predetermined position (or the threaded groove can be omitted, and the extrusion transport member can be designed as a piston, achieving this working condition through friction). During assembly, the center of the code disk has a slot, and the code disk is fitted onto the connecting sleeve and connected to the connecting sleeve. This design is mainly to facilitate the initial transportation of the encoder. The housing has a stepped groove that fits the connecting sleeve. When the connecting sleeve is squeezed by the transport extrusion component, the connecting sleeve and the stepped groove are fixed to each other. During operation, the connecting sleeve is lifted to disengage from the fixed position and is fixed to the motor shaft. The motor shaft drives the connecting sleeve to rotate, which in turn drives the encoder to rotate.

[0015] Beneficial Effects: This utility model discloses an encoder with a positioning fixture. The invention utilizes a positioning channel and a fixing channel on the periphery of the connecting sleeve, and a docking channel on the housing. Positioning pins are used to position the connecting sleeve and the motor shaft. During positioning, the motor shaft is inserted into the connecting sleeve, and then the positioning pin is inserted into the positioning channel via the docking channel. As the positioning pin moves, the connecting sleeve moves upward due to the interaction between the positioning channel and the tapered portion of the positioning pin. Positioning of the connecting sleeve is achieved through at least three positioning pins. As the positioning pins continue to advance, they abut against the motor shaft, completing the positional positioning of the connecting sleeve and the motor shaft. Finally, the fixing bolts are tightened, and the connection between the fixing bolts and the motor shaft completes the fixation of the connecting sleeve and the motor shaft. This method allows for simultaneous positioning of the connecting sleeve's height and the connection between the connecting sleeve and the motor shaft. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is an exploded structural diagram of the part of this utility model.

[0018] Figure 3 This is a schematic diagram of the positioning pin and positioning connecting sleeve of this utility model.

[0019] Figure 4 This is a schematic diagram of the mating state of the fixing bolt and fixing channel of this utility model.

[0020] The attached figures are labeled as follows: 1. Encoder body; 11. Housing; 111. Docking channel; 12. Code disk; 13. Connecting sleeve; 131. Fixing channel; 132. Positioning channel; 14. Sensor; 15. Base plate; 2. Transport extrusion parts; 3. Positioning pins; 4. Motor shaft; 5. Fixing bolts. Detailed Implementation

[0021] This application relates to an encoder with a positioning fixture, which is mainly used to solve the positioning and installation problem of bearingless encoders. Encoders are divided into bearing and bearingless encoders. Bearing encoders are easier to position, but their accuracy is limited by the bearing. Bearingless encoders are directly connected to the motor and rely on the motor's rotational accuracy, eliminating losses from intermediate links. However, this requires relatively precise installation and positioning with the motor. The following detailed explanation uses specific implementation methods.

[0022] An encoder with a positioning fixture, comprising: Encoder body 1, and positioning pin 3 adapted to the encoder body 1; The encoder body 1 includes a housing consisting of a cover 11 and a base plate 15, and a connecting sleeve 13 disposed within the housing; The connecting sleeve 13 has at least three positioning channels 132 and at least three fixing channels 131 on its periphery; The cover 11 has multiple docking channels 111 that are adapted to the positioning channel 132 and the fixing channel 131; At least three positioning pins 3 are designed, and each is adapted to the positioning channel 132 and the docking channel 111 respectively. The docking end of each positioning pin 3 with the positioning channel 132 is tapered. This invention utilizes a positioning channel 132 and a fixing channel 131 on the periphery of the connecting sleeve 13, and a docking channel 111 on the housing 11. The connecting sleeve 13 and the motor shaft 4 are positioned using positioning pins 3. During positioning, the motor shaft 4 is inserted into the connecting sleeve 13, and then the positioning pin 3 is inserted into the positioning channel 132 through the docking channel 111. When the positioning pin 3 moves, the connecting sleeve 13 moves upward due to the interaction between the positioning channel 132 and the tapered part of the positioning pin 3. The positioning of the connecting sleeve 13 is completed by at least three positioning pins 3. As the positioning pins 3 continue to enter, they abut against the motor shaft 4, completing the position positioning of the connecting sleeve 13 and the motor shaft 4. Then, the fixing bolt 5 is tightened, and the fixing bolt 5 and the motor shaft 4 are fixed through the low contact of the motor shaft 4. In this way, the height position positioning of the connecting sleeve 13 and the axial positioning of the connecting sleeve 13 and the motor shaft 4 can be completed simultaneously.

[0023] The base plate 15 is equipped with a sensor 14.

[0024] The fixing channel 131 is equipped with a fixing bolt 5, and the fixing channel 131 has a thread that matches the fixing bolt 5. By designing the fixing bolt 5, the motor shaft 4 and the connecting sleeve 13 are fixed. During fixing, the motor shaft 4 is inserted into the connecting sleeve 13, and then the connecting sleeve 13 is positioned to a predetermined position by the cooperation of the positioning pin 3 and the housing. Then, the fixing bolt 5 is screwed into the fixing channel 131 and gradually abuts against the motor shaft 4 to complete the fixing of the motor shaft 4 and the connecting sleeve 13.

[0025] The connecting sleeve 13 is equipped with a code disk 12.

[0026] The base plate 15 has a shaft groove, and the connecting sleeve 13 is fitted with a motor shaft 4. The motor shaft 4 enters the connecting sleeve 13 through the shaft groove and abuts against the fixing bolt 5.

[0027] The top of the cover 11 has a transport slot, and a transport extrusion member 2 is adapted to the transport slot. The transport extrusion member 2 abuts against the connecting sleeve 13 through the transport slot, and extrudes the connecting sleeve 13 to a predetermined position. The transport extrusion member 2 and the transport slot have mutually compatible threaded grooves, so that the transport extrusion member 2 can be connected to the cover 11 and extrudes the connecting sleeve 13 to a predetermined position (or the threaded groove can be omitted, and the extrusion transport member can be designed as a piston type, and this working condition can be achieved by friction). During assembly, the center of the code disk 12 has a slot, and the code disk 12 is fitted on the connecting sleeve 13 and connected to the connecting sleeve 13. This design is mainly to facilitate the initial transportation of the encoder. The housing 11 has a stepped groove that fits the connecting sleeve 13. When the connecting sleeve 13 is squeezed by the transport extrusion member 2, the connecting sleeve 13 and the stepped groove are fixed to each other. During operation, the connecting sleeve 13 is lifted to disengage from the fixed position and is fixed to the motor shaft 4. The motor shaft 4 drives the connecting sleeve 13 to rotate, which in turn drives the encoder 12 to rotate.

[0028] Working principle description: During operation, the motor shaft 4 is inserted into the connecting sleeve 13, and the positioning pin 3 is inserted into the positioning channel 132 through the docking channel 111. When the positioning pin 3 moves, the connecting sleeve 13 is affected by the engagement between the positioning channel 132 and the tapered part of the positioning pin 3, and moves upward. The positioning of the connecting sleeve 13 is completed by at least three positioning pins 3. As the positioning pin 3 continues to enter, it abuts against the motor shaft 4, completing the positioning of the connecting sleeve 13 and the motor shaft 4. Then the fixing bolt 5 is tightened. Through the low contact between the fixing bolt 5 and the motor shaft 4, the fixing of the connecting sleeve 13 and the motor shaft 4 is completed. Use bolt tightening tools when tightening bolt 5.

[0029] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and all such equivalent transformations fall within the protection scope of the present invention.

Claims

1. An encoder with a positioning fixture, comprising: Encoder body (1), and positioning pin (3) adapted to the encoder body (1). The encoder body (1) includes a housing consisting of a cover (11) and a base plate (15), and a connecting sleeve (13) disposed within the housing. The characteristic feature is that the connecting sleeve (13) has at least three positioning channels (132) and at least three fixing channels (131) around its periphery, and each fixing channel (131) is equipped with a fixing bolt (5). The cover (11) has multiple docking channels (111) that are adapted to the positioning channel (132) and the fixing channel (131). At least three positioning pins (3) are designed, and each is adapted to the positioning channel (132) and the docking channel (111) respectively. The docking end of each positioning pin (3) with the positioning channel (132) is tapered.

2. The encoder with positioning fixture according to claim 1, characterized in that: A sensor (14) is provided on the base plate (15).

3. An encoder with a positioning fixture according to claim 1, characterized in that: The fixed channel (131) has threads that are compatible with the fixed bolt (5).

4. An encoder with a positioning fixture according to claim 1, characterized in that: The connecting sleeve (13) is provided with a code disk (12).

5. An encoder with a positioning fixture according to claim 3, characterized in that: The base plate (15) has a shaft slot, and the connecting sleeve (13) is fitted with a motor shaft (4). The motor shaft (4) enters the connecting sleeve (13) through the shaft slot and abuts against the fixing bolt (5).

6. An encoder with a positioning fixture according to claim 3, characterized in that: The top of the cover (11) has a transport slot, and a transport extrusion member (2) is adapted to the transport slot. The transport extrusion member (2) abuts against the connecting sleeve (13) through the transport slot, and extrudes the connecting sleeve (13) to a predetermined position.

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