Encoder positioning structure of shell-free sleeve shaft motor

Abstract

The utility model discloses an encoder positioning structure of a non-shell sleeve shaft motor, which comprises a motor assembly, a motor assembly, an encoder assembly and an encoder assembly, and is characterized in that the motor assembly comprises a stator and a rotating shaft; the positioning cover comprises a shaft sleeve hole and an end face, and after the rotating shaft is sleeved with the positioning cover through the shaft sleeve hole, the positioning cover and the stator are closed in a covering mode; the circuit board is fixed on the end surface; the receiver is connected with the circuit board; and the code disc is arranged on the part, extending out after penetrating through the end face, of the rotating shaft. The beneficial effects of the utility model are that: 1, the positioning cover made of metal material is additionally arranged between the end cover and the stator, and the circuit board is fixed on the high-strength positioning cover, so that the circuit board is not easy to deform and damage in the use process; secondly, the positioning cover is provided with the positioning hole, so that the positioning cover is more accurate to mount; thirdly, the interference of the flat cable in the interior is effectively avoided; and fourthly, the circuit board, the receiver and the coded disc are positioned on the outer side end surface of the positioning cover, and the rotor and the stator are positioned in the positioning cover, so that a very effective isolation effect is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of encoder especially relates to an encoder positioning structure of casingless sleeve shaft motor. BACKGROUND

[0002] Encoder is the device that signal (such as bit stream) or data are arranged, converted into the signal form available to communication, transmission and storage. Encoder converts angular displacement or linear displacement into electrical signal, the former is called code disc, and the latter is called code ruler. Rotary encoder is a kind of photoelectric rotary measuring device, which directly converts the angular displacement to be measured into digital signal (high-speed pulse signal).

[0003] The current sleeve type encoder is installed on the shell, and the thickness of the shell cannot be too thick due to the process requirements of shell installation, so plastic material is generally used, and therefore when the circuit board is positioned and installed on the shell, the shell is deformed after being subjected to frequent stress due to its low strength, thereby causing damage to the circuit board. If you want to improve the strength of the shell, you can use a higher strength metal (aluminum) material to make the shell, but the thickness of the shell cannot be too thick due to the disassembly method, so it is difficult to manufacture and the cost is high. SUMMARY

[0004] The utility model aims at overcoming the insufficient of prior art, provide a kind of encoder positioning structure of casingless sleeve shaft motor.

[0005] To solve the above technical problems, the utility model provides the following technical scheme: a kind of encoder positioning structure of casingless sleeve shaft motor, including motor assembly, including stator;Positioning cover, including shaft hole and end face, the shaft hole is sleeved into body shaft, the positioning cover is located between the opposite side of the end face and the stator Cover;Circuit board, the circuit board is fixed on the end face;Receiver, connected with the circuit board;Code disc, is sleeved on the body shaft, and the code disc is located on the part of body shaft and extends out after passing through the end face, and the receiver is used to receive signal through the grating gap on the code disc.

[0006] Preferably, the positioning cover further includes a first mounting hole and a positioning hole;The first mounting hole is aligned with the second mounting hole on the stator, and is fixed by embedding a first mounting pin;The hole diameter of the positioning hole is smaller than that of the first mounting hole, for separate positioning between the positioning cover and the stator.

[0007] Preferably, it includes body, and the body includes mounting seat;At least one first mounting pin passes through the first mounting hole, the second mounting hole in sequence and is fixed and installed with the mounting seat;At least one first mounting pin only passes through the second mounting hole and is fixed and installed with the mounting seat.

[0008] Preferably, the positioning cover further comprises a notch; the notch is used for the wire arranged in the positioning cover to pass out after the positioning cover is combined with the stator cover.

[0009] Preferably, the positioning cover further comprises a baffle; the baffle is arranged on the end face and extends upwards to form a wire slot, and the wire arranged in the positioning cover can be arranged in the wire slot after passing out.

[0010] Preferably, the motor assembly comprises a rotor and a shaft sleeve; the stator is sleeved on the periphery of the rotor, the shaft sleeve is sleeved on the body rotating shaft, and the shaft hole passes through the shaft sleeve.

[0011] Preferably, the motor assembly further comprises an end cover; the end cover is combined with the end face of the positioning cover, and the end cover and the positioning cover are fixedly connected through a second mounting pin.

[0012] Preferably, the motor assembly further comprises a cover shell; the body further comprises a third mounting hole, and the cover shell is fixedly connected between the body through the third mounting hole; the motor assembly, the positioning cover, the circuit board, the receiver and the code disc are covered in the cover shell.

[0013] The utility model discloses the beneficial effects of the utility model: first, through the positioning cover of metal material between the end cover and the stator, the circuit board is fixed on the positioning cover of high strength, and deformation damage does not easily occur in the use process, second, the positioning hole is arranged on the positioning cover, and the installation of the positioning cover is more accurate, third, the notch and the baffle are arranged, and the wire arranged in the positioning cover passes out and is arranged, when the motor rotates, effectively avoid the interference of the wire in the interior, fourth, the circuit board, the receiver and the code disc are arranged on the outer side end face of the positioning cover, and the rotor and the stator are arranged in the positioning cover, and the isolation effect is very effective. DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the whole structure schematic view of the encoder positioning structure of the shellless shaft motor of the utility model;

[0015] Figure 2 It is the explosion structure schematic view of the encoder positioning structure of the shellless shaft motor of the utility model;

[0016] Figure 3 It is the position structure schematic view of the code disc of the utility model;

[0017] Figure 4 It is the structure schematic view of the body rotating shaft of the utility model;

[0018] Figure 5 It is the structure schematic view of the rotor and the shaft sleeve assembly on the body rotating shaft of the utility model;

[0019] Figure 6 The overall structure schematic view of the positioning cover is described in the utility model;

[0020] Figure 7 The structure schematic view of the second mounting hole in the stator is described in the utility model;

[0021] Figure 8 The position structure schematic view of the receiver is described in the utility model;

[0022] Figure 9 The schematic view under the overhead perspective of the positioning cover is described in the utility model;

[0023] Figure 10 The structure schematic view of the end cover and the cover shell is described in the utility model. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the utility model embodiment clearer, the technical scheme in the utility model embodiment will be described clearly and completely below by combining the drawings in the utility model embodiment. The described embodiment is a part of the utility model, not all of the embodiments.

[0025] Embodiment 1

[0026] The existing shaft sleeve type encoder generally installs the circuit board on the shell. Due to the process requirement of the shell installation, the thickness cannot be too thick, so when the plastic material is generally used for processing and manufacturing, the process requirement is relatively low. Therefore, after the circuit board is positioned and installed on the shell, in the process of disassembly and assembly, the shell is prone to deformation due to its low strength after frequent stress, thereby causing damage to the circuit board. If the circuit board still needs to be installed on the shell, the strength of the shell needs to be improved, for example, a shell made of a metal (aluminum) material with higher strength can be used. However, the disassembly and assembly mode of the shell leads to that the thickness cannot be too thick, so it is difficult to manufacture a thin shell made of a metal material, and the cost is relatively high.

[0027] Reference Figures 1-10The embodiment provides a new encoder positioning structure, the positioning cover 200 is added to mount the circuit board 300, and the positioning receiver 400 and the code disc 500 are isolated from the internal structure of the motor, the positioning cover 200 is arranged on one side of the motor assembly 100 to cover the motor assembly 100, the circuit board 300 is arranged on the positioning cover 200, the code disc 500 is arranged outside the positioning cover 200, the receiver 400 is arranged below the positioning cover 200, and information is read through a grating gap between the receiver 400 and the code disc 500, so that the encoder is formed, and it is understood that the receiver 400 is electrically connected with the circuit board 300, and the encoder converts angular displacement or linear displacement into an electrical signal.

[0028] It should be noted that the embodiment aims to provide a positioning structure, and the working principle of the encoder, for example, how to realize signal reading, signal conversion, control of the circuit board 300, connection and layout of a circuit and the like, all belong to mature prior art, and can be realized by referring to the prior art by those skilled in the art, and also belong to non-essential technical features of the embodiment, and therefore are not described in detail.

[0029] Further, the motor assembly 100 in the embodiment comprises a stator 101, a body rotating shaft 603, a rotor 103 and a shaft sleeve 104, the stator 101 is sleeved on the rotor 103, the body rotating shaft 603 is connected with the rotor 103, the shaft sleeve 104 is sleeved on the body rotating shaft 603, and the shaft hole 201 is sleeved on the shaft sleeve 104, and the rotation output of the body rotating shaft 603 can be realized after being electrified. It should be noted that the embodiment is a sleeve shaft motor, so the body rotating shaft 603 is actually an output shaft of the machine, and the rotating shaft of the motor is shared as one shaft, the shaft sleeve 104 is preferably adopted to increase the stability of connection, and it is understood that the shaft sleeve 104 can also be removed to realize the scheme.

[0030] The positioning cover 200 comprises the shaft hole 201 and an end face 202, the positioning cover 200 is covered between the stator 101 after the shaft hole 201 is sleeved into the body rotating shaft 603, the circuit board 300 is fixed on the end face 202, the receiver 400 is connected with the circuit board 300, the code disc 500 is arranged on a part of the body rotating shaft 603 extending out after penetrating through the end face 202, and the receiver 400 can receive signals through the grating gap on the code disc 500.

[0031] In this embodiment, to realize accurate installation of the positioning cover 200 and the stator 101, two parts are included, the positioning cover 200 is provided with a first mounting hole 203 and a positioning hole 204, wherein the first mounting hole 203 is aligned with the second mounting hole 101a on the stator 101, and is embedded and fixed by the first mounting pin 101b; the diameter of the positioning hole 204 is smaller than that of the first mounting hole 203, and is used for separate positioning between the positioning cover 200 and the stator 101.

[0032] It should be noted that the positioning hole 204 is only used for positioning between the stator 101, so a small hole diameter can be used for positioning, so that small hole diameter positioning is more accurate, and in this embodiment, 2-3 positioning holes 204 can be used, and the first mounting hole 203 is a larger hole diameter provided on the four corners of the positioning cover 200.

[0033] Further, the positioning structure further includes a machine body 600, and the machine body 600 is provided with a mounting seat 601. In this embodiment, the first mounting pin 101b is 4, including two parts, one is that the first mounting pin 101b passes through the first mounting hole 203, the second mounting hole 101a in sequence and is fixedly installed in cooperation with the mounting seat 601, which is used for installation between the positioning cover 200, the stator 101 and the machine body 600. Because it involves the installation of three parts, it needs a large hole diameter for strength support. The second is that the first mounting pin 101b only passes through the second mounting hole 101a and is fixedly installed in cooperation with the mounting seat 601, that is, it does not pass through the positioning cover 200, and is only used for installation between the stator 101 and the machine body 600. In this embodiment, the first mounting pin 101b is provided as 4, of which 2 are used for installation between the positioning cover 200, the stator 101 and the machine body 600, and the other 2 are used for installation between the stator 101 and the machine body 600. The hierarchical installation and positioning mode first ensures the stability of the stator 101 and the machine body 600, and then ensures the stability between the three after the positioning cover 200 is added, so that the installation is more stable.

[0034] Further, in the existing sleeve structure, there is no positioning cover 200, so after the circuit board 300 is installed on the shell, when the shell is closed, all the wires S are located inside, which will interfere with the rotation of the motor assembly 100, the receiver 400 and the encoder disc 500, and even directly touch the encoder disc 500, the rotor 103 and the machine body shaft 603. In this embodiment, the positioning cover 200 is provided, and the circuit board 300, the receiver 400 and the encoder disc 500 are isolated from the rotor 103 and the stator 101 through the positioning cover 200, so that the encoder and the motor assembly do not interfere with each other, and the structure is simple and effective.

[0035] But for the internal wire S, the embodiment is provided with a notch 205 and a baffle 206 on the positioning cover 200, wherein the notch 205 is used to pull out the wire S in the positioning cover 200 after the positioning cover 200 is combined with the stator 101. The baffle 206 is arranged on the end surface 202 and extends upward to form a wire slot, and the wire S in the positioning cover 200 can be arranged in the wire slot after being pulled out.

[0036] In a popular way, after the positioning cover 200 is combined, the wire S in the positioning cover 200 is pulled out by the notch 205 and arranged in the wire slot, so that the wire S does not interfere with and damage the motor inside and the receiver 400 and the encoder disc 500 after being taken out.

[0037] As a preferred embodiment of the present embodiment, an end cover 700 and a cover shell 800 are provided, wherein the end cover 700 is combined with the end surface 202 side of the positioning cover 200, and the end cover 700 and the positioning cover 200 are fixed and installed through the second mounting pin 701. The machine body 600 further includes a third mounting hole 602, and the cover shell 800 is fixed and installed between the machine body 600 through the third mounting hole 602. The motor assembly 100, the positioning cover 200, the circuit board 300, the receiver 400 and the encoder disc 500 are all covered in the cover shell 800. It is not difficult to understand that the cover shell 800 should also include other elements of the covered motor components, which are irrelevant to the core scheme of the present embodiment, i.e., the positioning structure, and therefore are not described in detail here.

[0038] The present embodiment adds the positioning cover 200 made of metal material between the end cover 700 and the stator 101, the circuit board 300 is fixed on the high-strength positioning cover 200, and is not easy to deform and damage during use; secondly, the positioning hole 204 is arranged on the positioning cover 200, which makes the installation of the positioning cover 200 more accurate; thirdly, the notch 205 and the baffle 206 are arranged to pull out and arrange the wire S in the positioning cover 200, which effectively avoids the interference of the wire S in the motor during rotation; fourthly, the circuit board 300, the receiver 400 and the encoder disc 500 are arranged on the outer end surface of the positioning cover 200, and the rotor 103 and the stator 101 are arranged in the positioning cover 200, which has a very effective isolation effect.

[0039] Embodiment 2

[0040] Based on the positioning structure of the encoder of the shell-less motor proposed in the above embodiment, the present embodiment proposes a mounting method of the encoder of the shell-less motor, which specifically includes the following steps:

[0041] Step 1: First, the motor assembly 100 and the machine body 600 are installed, including being installed by cooperating with the mounting seat 601 through at least one first mounting pin 101b only penetrating through the second mounting hole 101a. This step is the first stage of the hierarchical installation, which ensures the stable installation of the stator 101 and the machine body 600.

[0042] Step 2: After the positioning cover 200 is positioned by the shaft hole 201 passing through the body shaft 603, the first mounting hole 203 is aligned with the second mounting hole 101a, and the separate positioning between the positioning cover 200 and the stator 101 is realized by using the positioning hole 204. This step is only the positioning of the positioning cover 200 and the stator 101, and does not involve the body 600, so it requires a small hole diameter and a low depth;

[0043] Step 3: After the positioning of the positioning cover 200 and the stator 101 is completed, at least one first mounting pin 101b is sequentially inserted through the first mounting hole 203, the second mounting hole 101a, and then is mounted in cooperation with the mounting seat 601. This step is the second level of the staged installation, which ensures the stable installation between the positioning cover 200, the stator 101 and the body 600. On the basis of the first level of stability, the second level of installation will be more stable;

[0044] Step 4: The code disc 500 is sleeved on the body shaft 603 of the leakage end surface 202. This step is the isolated installation of the code disc 500, which is installed outside the end surface 202 and has an isolation effect;

[0045] Step 5: The circuit board 300 is fixed on the end surface 202, and the code disc 500 is located between the circuit board 300 and the end surface 202 and cooperates with the receiver 400;

[0046] Step 6: The end cover 700 is positioned to cover the positioning cover 200 on one side of the end surface 202;

[0047] Step 7: The cover shell 800 is installed in cooperation with the body 600.

[0048] Based on the above steps, the installation of the positioning structure of the encoder in the embodiment is completed.

[0049] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit the protection scope of the present application. For ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description and ideas, and it is not necessary or possible to exhaust all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principles of the technical solutions of the present application should be covered in the protection scope of the claims of the present application.

Claims

1. An encoder positioning structure for a shaft motor without a casing, characterized by: The motor assembly (100) comprises a stator (101); The positioning cover (200) comprises a shaft hole (201) and an end face (202), the shaft hole (201) is sleeved on the fuselage rotating shaft (603), and the positioning cover (200) is located between the end face (202) and the stator (101) on the opposite side to cover; The circuit board (300) is fixed on the end face (202); The receiver (400) is connected with the circuit board (300); The code disc (500) is sleeved on the fuselage rotating shaft (603), and the code disc (500) is located on the part of the fuselage rotating shaft (603) extending out after passing through the end face (202), and the receiver (400) is used for receiving signals through the grating gap on the code disc (500). The positioning cover (200) further comprises a first mounting hole (203) and a positioning hole (204); 2. The encoder positioning structure for a non-can motor according to claim 1, characterized in that: The first mounting hole (203) is aligned with the second mounting hole (101a) on the stator (101), and is embedded and fixed by the first mounting pin (101b); The positioning hole (204) has a smaller aperture than the first mounting hole (203), and is used for separate positioning between the positioning cover (200) and the stator (101). The motor assembly (100) comprises a stator (101); 3. The encoder positioning structure for a non-can motor according to claim 2, wherein: At least one first mounting pin (101b) passes through the first mounting hole (203), the second mounting hole (101a) and the mounting seat (601) in sequence and is fixed and installed in cooperation with the mounting seat (601); At least one first mounting pin (101b) passes through the second mounting hole (101a) and is fixed and installed in cooperation with the mounting seat (601). The positioning cover (200) further comprises a notch (205); 4. The encoder positioning structure of a non-can type shaft motor according to any one of claims 1 to 3, characterized in that: The notch (205) is used for the wire (S) in the positioning cover (200) to pass out after the positioning cover (200) and the stator (101) are covered. The positioning cover (200) further comprises a baffle (206); 5. The encoder positioning structure for a non-can motor as set forth in claim 4, characterized in that: The baffle (206) is arranged on the end face (202) and extends upward to form a wire slot, and the wire (S) in the positioning cover (200) can be arranged in the wire slot after passing out. The motor assembly (100) comprises a rotor (103) and a shaft sleeve (104); 6. The encoder positioning structure for a non-can motor as set forth in any of claims 1-3 or 5, characterized in that: The stator (101) is sleeved on the periphery of the rotor (103), the shaft sleeve (104) is sleeved on the fuselage rotating shaft (603), and the shaft hole (201) passes through the shaft sleeve (104). Further comprising an end cover (700); 7. The encoder positioning structure for a non-can motor as set forth in claim 6, wherein: The end cover (700) covers the end face (202) of the positioning cover (200) on the side, and the end cover (700) and the positioning cover (200) are fixed and installed by the second mounting pin (701). Further comprising a cover (800); 8. The encoder positioning structure for a non-can motor as set forth in claim 3, wherein: ​ The fuselage (600) further comprises a third mounting hole (602), the cover (800) is mounted and fixed between the third mounting hole (602) and the fuselage (600), and the motor assembly (100), the positioning cover (200), the circuit board (300), the receiver (400) and the code disc (500) are covered in the cover (800).

Images