Encoder and motor
By designing positioning holes and tapered limits on the fixed brackets of the encoder circuit board bracket and the code disk assembly, the cumbersome installation problem of existing encoders is solved, and a more efficient installation process is achieved.
Patent Information
- Application Number
- CN202421238262.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-05-31
AI Technical Summary
The existing split encoder connects the circuit board bracket and the code disc through screws, and the screws are easily dropped, resulting in cumbersome installation and inefficient efficiency.
The positioning hole is provided at the bottom of the circuit board bracket, and the fixed bracket of the code disk assembly is provided with a conical limiting part, and the conical limiting part is inserted into the positioning hole, and the code disk assembly is fixed by being tightened to each other with the inner wall of the positioning hole.
Reduce dependence on screws, more convenient installation, and improve the installation efficiency of the encoder.
Smart Images
Figure CN222602211U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of encoders, in particular to an encoder and a motor. Background Art
[0002] At present, encoders are mostly installed on the shaft system to detect the position, speed, angular velocity and other information of the shaft system. Encoders are divided into split encoders and integral encoders. Split encoders generally include circuit boards, circuit board brackets, code discs and screws.
[0003] However, the existing split encoder connects the circuit board bracket to the code disc by screws. Since the screws are relatively small, they are easy to fall off when installing the existing split encoder, and need to be picked up repeatedly for installation, resulting in cumbersome installation of the existing split encoder and low efficiency in installing the split encoder. Utility Model Content
[0004] The main purpose of the utility model is to provide an encoder, aiming to solve the problem that the existing split encoder uses screws to connect the circuit board bracket and the code disk, the screws are easy to fall off, and need to be picked up repeatedly for installation, resulting in cumbersome installation of the existing split encoder and low efficiency in installing the split encoder.
[0005] To achieve the above object, the encoder proposed by the utility model includes:
[0006] Circuit board motherboard;
[0007] A circuit board bracket, wherein a positioning hole is provided at the bottom of the circuit board bracket, and the circuit board mainboard is mounted on the circuit board bracket; and
[0008] A code disc assembly is connected to the circuit board bracket, the code disc assembly includes a fixed bracket and a code disc body, the code disc body is installed on the fixed bracket, the fixed bracket includes a head, a tail and a conical limiting portion, the outer diameter of the conical limiting portion is gradually reduced from the head to the tail, the conical limiting portion is inserted into the positioning hole, and the head is located in the circuit board bracket.
[0009] Optionally, the diameter of the positioning hole is wider at the top and narrower at the bottom, and the outer wall of the conical limiting portion abuts against the inner wall of the positioning hole.
[0010] Optionally, the circuit board bracket encloses a fixed cavity, the code disc body is installed on the edge of the head, and the code disc body and the head are located in the fixed cavity.
[0011] Optionally, the encoder further includes a locking piece, which is sleeved on the conical limiting portion and abuts against the bottom of the circuit board bracket.
[0012] Optionally, the locking member is a retaining spring, the conical limiting portion is provided with a retaining groove, and the retaining spring is clamped in the retaining groove.
[0013] Optionally, a mounting groove is provided inside the conical limiting portion and the tail portion, and a motor shaft of the motor is mounted in the mounting groove.
[0014] Optionally, the encoder includes a circuit board mainboard, and the circuit board mainboard is mounted on the circuit board bracket.
[0015] The utility model also proposes a motor, which includes a motor component and the encoder, the encoder is connected to the motor component, the motor component includes a motor shaft and an end cover, the motor shaft is rotatably connected to the end cover, and the motor shaft is inserted into the fixed bracket, and the end cover is connected to the circuit board bracket.
[0016] Optionally, a plug hole is provided on the side of the tail portion, and the motor further comprises a first fastener, which passes through the plug hole and is connected to the motor shaft.
[0017] Optionally, a through hole is provided at the bottom of the circuit board bracket, and the motor further includes a second fastener, which passes through the through hole and is connected to the end cover.
[0018] The technical solution of the utility model adopts a positioning hole provided at the bottom of the circuit board bracket, and a fixed bracket on the code disk assembly is provided with a conical limiting portion, the outer diameter of the conical limiting portion is gradually reduced from the head to the tail, and the conical limiting portion is inserted into the positioning hole, so that the conical limiting portion and the inner wall of the positioning hole are pressed against each other, so that the code disk assembly is fixed on the circuit board bracket, and it can be installed without using screws, which is more convenient to install and the efficiency of installing the split encoder is high. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.
[0020] Figure 1 A cross-sectional view of an embodiment of an encoder of the utility model;
[0021] Figure 2 It is a cross-sectional view of an embodiment of the motor when the second fastener on the encoder of the utility model is not screwed into the threaded hole of the end cover;
[0022] Figure 3It is a cross-sectional view of an embodiment of the motor when the second fastener on the encoder of the utility model has been screwed into the threaded hole of the end cover;
[0023] Figure 4 It is a three-dimensional structural schematic diagram of an embodiment of the motor of the utility model.
[0024] Description of Figure Numbers:
[0025] Label name Label name 20 Encoder 2211 Mounting slot 21 Circuit board bracket 222 Conical stopper 210 Positioning hole 2220 Card slot 211 Fixed cavity 2221 Card position piece 213 Through Hole 223 Circuit board motherboard 23 Code disc components 100 Motor 2201 Code disc body 10 Motor shaft 22 Fixed bracket 11 End caps 220 head 12 First fastener 221 Tail 13 Second fastener 2210 Jack
[0026] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0028] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0029] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0030] In addition, in the present utility model, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text is to include three parallel solutions. Taking "A and / or B as an example", it includes solution A, or solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.
[0031] The utility model provides an encoder 20. Figures 1 to 4 , Figure 1 A cross-sectional view of an embodiment of an encoder 20 of the present utility model; Figure 2 It is a cross-sectional view of an embodiment of the motor 100 when the second fastener 13 on the encoder 20 of the utility model is not screwed into the threaded hole 110 of the end cover 11; Figure 3 The second fastener 13 on the encoder 20 of the utility model has been screwed into the threaded hole 110 of the end cover 11, and the cross-sectional view of an embodiment of the motor 100; Figure 4 It is a three-dimensional structural diagram of an embodiment of a motor 100 of the present utility model.
[0032] In the embodiment of the present utility model, Figure 1 As shown, the encoder 20 proposed by the utility model includes:
[0033] Circuit board main board 223;
[0034] A circuit board bracket 21, wherein a positioning hole 210 is provided at the bottom of the circuit board bracket 21, and the circuit board main board 223 is mounted on the circuit board bracket 21; and
[0035] A code disc assembly 23, which is connected to the circuit board bracket 21. The code disc assembly 23 includes a fixed bracket 22 and a code disc body 2201. The code disc body 2201 is installed on the fixed bracket 22. The fixed bracket 22 includes a head 220, a tail 221 and a conical limiting portion 222. The outer diameter of the conical limiting portion 222 is gradually reduced from the head to the tail 221. The conical limiting portion 222 is inserted into the positioning hole 210, and the head 220 is located in the circuit board bracket 21.
[0036] The code disc 22 of the existing encoder 20 is a straight cylindrical structure, and the code disc 22 needs to be fixed to the circuit board bracket 21 by screws. In addition, since the encoder 20 is generally small in size, the screws required are also small in size, which causes the screws to fall off easily when assembling the encoder 20, which is not conducive to installing the code disc 22 on the circuit board, and the installation efficiency is low.
[0037] The technical solution of the utility model adopts a positioning hole 210 provided at the bottom of the circuit board bracket 21, and the fixed bracket 22 on the code disk assembly 23 is provided with a conical limiting portion 222, the outer diameter of the conical limiting portion 222 is gradually reduced from the head to the tail 221, and the conical limiting portion 222 is inserted into the positioning hole 210, so that the code disk assembly 23 is fixed on the circuit board bracket 21 by the conical limiting portion 222 and the inner wall of the positioning hole 210 being pressed against each other.
[0038] Because the encoder 20 of the utility model can be fixed by the conical limiting portion 222 and the inner wall of the positioning hole 210 being pressed against each other when the code disc assembly 23 and the circuit board bracket 21 are assembled together, the use of screws for fixing is reduced, the installation is more convenient, and the installation efficiency of the encoder 20 is high.
[0039] In one embodiment, the code disk body 2201 may be a magnetic grating disk or an optical grating disk.
[0040] The conical limiting portion 222 may be provided with a convex point, and the inner wall of the positioning hole 210 may be provided with a groove corresponding to the convex point, and the convex point is fixed in the groove, so that the conical limiting portion 222 is not easy to rotate in the positioning hole 210.
[0041] In addition, in the actual application of the split encoder 20, the various components of the encoder 20 are usually placed separately and packaged independently. When the encoder 20 is assembled with the motor 100 product, the scattered parts of the encoder 20 need to be reassembled one by one in order. However, due to the assembly in storage or transportation and in a non-dust-free environment, dust is easily attached to the various parts of the encoder 20, which will affect the normal use or accurate detection of the encoder 20, especially the photoelectric encoder 20 that is sensitive to dust.
[0042] The utility model is provided with a positioning hole 210 at the bottom of the circuit board bracket 21, and the outer diameter of the conical limiting portion 222 of the code disk 22 is gradually reduced from the head to the tail 221, so that the circuit board bracket 21 and the code disk assembly 23 are fixed together by the conical positioning hole and the conical limiting portion 222. Because the fixing bracket 22 is fixed to the circuit board bracket 21 in advance by a tight pressing method, the axial hole connecting the inside of the encoder 20 with the outside is blocked by a sealing plug. In this way, the scattered components can be assembled into an integral encoder 20 in advance for packaging and sales, reducing dust adhesion to the code disk body 2201 or the circuit board bracket 21, greatly reducing the occurrence of dust contamination of the key components of the encoder 20, and ensuring the normal use or accurate detection of the encoder 20.
[0043] When in use, there is no need to disassemble the assembled encoder 20 , and the assembled encoder 20 can be directly installed on the motor shaft 10 to complete the installation of the motor 100 , thereby improving the installation efficiency of the motor 100 .
[0044] Furthermore, the tapered limiting portion 222 has an outer shape that is wider at the top and narrower at the bottom, the positioning hole 210 is adapted to the code disk 22 , the diameter of the positioning hole 210 is wider at the top and narrower at the bottom, and the outer wall of the tapered limiting portion 222 abuts against the inner wall of the positioning hole 210 .
[0045] In one embodiment, the conical limiting portion 222 is installed in the positioning hole 210 , and the inner wall of the positioning hole 210 and the outer wall of the conical limiting portion 222 are pressed against each other.
[0046] In order to facilitate the installation of the code disc 22 to the circuit board bracket 21 , the circuit board bracket 21 encloses a fixed cavity 211 , the code disc body 2201 is installed on the edge of the head 220 , and the code disc body 2201 and the head 220 are located in the fixed cavity 211 .
[0047] In one embodiment, the code disk 22 can be placed into the fixing cavity 211 by lifting the head 220 , and external force can be applied to the head 220 so as to install the conical limiting portion 222 on the fixing bracket 22 into the positioning hole 210 .
[0048] In order to prevent the fixing bracket 22 mounted on the circuit board bracket 21 from loosening, the encoder 20 further includes a locking member 2221 . The locking member 2221 is sleeved on the conical limiting portion 222 and abuts against the bottom of the circuit board bracket 21 .
[0049] In one embodiment, the fixed bracket 22 is sleeved with a locking piece 2221, and the bottom of the circuit board bracket 21 abuts against the locking piece 2221. Utilizing the elastic effect of the locking piece 2221, the locking piece 2221 can prevent the circuit board bracket 21 from sliding downward. The locking piece 2221 limits the fixed bracket 22, and the fixed bracket 22 is not easy to move in the positioning hole 210.
[0050] The locking member 2221 is a retaining spring, the conical limiting portion 222 is provided with a retaining groove 2220 , and the retaining spring is engaged with the retaining groove 2220 .
[0051] In one embodiment, the conical limiting portion 222 of the fixing bracket 22 is fixed to the positioning hole 210 of the circuit board bracket 21 by pressing, so that the fixing bracket 22 is fixed to the circuit board bracket 21. Then, the clamping spring is clamped in the clamping groove 2220, so that the circuit board bracket 21 and the fixing bracket 22 are fixed by the elastic effect and limiting effect of the clamping spring, thereby reducing the loosening of the code disk 22 or the circuit board bracket 21.
[0052] In order to facilitate the installation of the encoder 20 on the motor 100 , a mounting groove 2211 is provided inside the conical limiting portion 222 and the tail portion 221 , and the motor shaft 10 of the motor 100 is installed in the mounting groove 2211 .
[0053] In one embodiment, the retaining spring is installed in the installation slot 2211 , and the retaining spring is not easily displaced by being pressed down by the bottom of the circuit board bracket 21 .
[0054] like Figure 1 As shown, the encoder 20 includes a circuit board main board 223 , and the circuit board main board 223 is installed on the circuit board bracket 21 .
[0055] In one embodiment, the circuit board main board 223 is mounted on the top of the circuit board bracket 21. The circuit board main board 223 is mounted on the circuit board bracket 21 by two screws.
[0056] like Figures 1 to 3 As shown, the utility model also proposes a motor 100, which includes a motor 100 component and the encoder 20, the encoder 20 is connected to the motor 100 component, the motor 100 component includes a motor shaft 10 and an end cover 11, the motor shaft 10 is rotatably connected to the end cover 11, and the motor shaft 10 is inserted into the fixed bracket 22, and the end cover 11 is connected to the circuit board bracket 21.
[0057] In order to connect the code disc assembly 23 to the motor shaft 10 , a plug hole 2210 is provided on the side of the tail portion 221 . The motor 100 further includes a first fastener 12 , which passes through the plug hole 2210 and is connected to the motor shaft 10 .
[0058] In one embodiment, the first fastener 12 is a screw. The first fastener 12 passes through the insertion hole 2210 and is connected to the motor shaft 10 , and the code disc assembly 23 is installed on the motor shaft 10 through the first fastener 12 .
[0059] In order to install the encoder 20 on the motor 100 , a through hole 213 is provided at the bottom of the circuit board bracket 21 . The motor 100 further includes a second fastener 13 , which passes through the through hole 213 and is connected to the end cover 11 .
[0060] In one embodiment, the second fastener 13 is a screw. In order to ensure that the encoder 20 is not easily detached from the motor 100, the circuit board bracket 21 is provided with a through hole 213, and the second fastener 13 passes through the through hole 213 and is screwed into the threaded hole of the end cover 11, so that the encoder 20 is connected to the end cover 11 of the motor 100.
[0061] like Figure 2 As shown, after the encoder 20 is assembled, the locking member 2221 can be removed, and then the encoder 20 is installed as a whole on the motor shaft 10 of the motor 100. Tighten the first fastener 12, and then use two second fasteners 13 to penetrate the through hole 213 of the circuit board bracket 21, and then screw into the threaded hole 110 of the end cover 11 of the motor 100. Figure 2 and Figure 3 As shown, during the screwing process of the second fastener 13, the circuit board bracket 21 is subjected to downward pressure, which causes the circuit board bracket 21 to separate from the fixing bracket 22, so as to ensure that the code disk assembly 23 can rotate with the motor shaft 10. The circuit board bracket 21 contacts the upper surface of the end cover 11, locking the second fastener 13, and finally completing the assembly operation of installing the encoder 20 on the motor 100.
[0062] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.
Claims
1. An encoder, characterized in that: include: Circuit board motherboard; A circuit board bracket, wherein a positioning hole is provided at the bottom of the circuit board bracket, and the circuit board mainboard is mounted on the circuit board bracket; and A code disc assembly is connected to the circuit board bracket, the code disc assembly includes a fixed bracket and a code disc body, the code disc body is installed on the fixed bracket, the fixed bracket includes a head, a tail and a conical limiting portion, the outer diameter of the conical limiting portion is gradually reduced from the head to the tail, the conical limiting portion is inserted into the positioning hole, and the head is located in the circuit board bracket.
2. The encoder according to claim 1, characterized in that The diameter of the positioning hole is wide at the top and narrow at the bottom, and the outer wall of the tapered limiting portion abuts against the inner wall of the positioning hole.
3. The encoder according to claim 2, characterized in that The circuit board bracket encloses a fixed cavity, the code disc body is installed on the edge of the head, and the code disc body and the head are located in the fixed cavity.
4. The encoder according to claim 1, characterized in that The encoder further comprises a locking piece, which is sleeved on the conical limiting portion and abuts against the bottom of the circuit board bracket.
5. The encoder according to claim 4, characterized in that The clamping member is a clamping spring, the conical limiting portion is provided with a clamping groove, and the clamping spring is clamped in the clamping groove.
6. An encoder as claimed in any one of claims 2 to 5, characterized in that The interior of the conical limiting portion and the tail portion are provided with mounting grooves, and the motor shaft of the motor is mounted in the mounting grooves.
7. An encoder as claimed in any one of claims 2 to 5, characterized in that The circuit board main board is connected to the circuit board bracket and is located above the code disc assembly.
8. A motor, characterized in that: The motor includes a motor assembly and an encoder as described in any one of claims 1 to 7, wherein the encoder is connected to the motor assembly, and the motor assembly includes a motor shaft and an end cover, wherein the motor shaft is rotatably connected to the end cover, and the motor shaft is inserted into the fixed bracket, and the end cover is connected to the circuit board bracket.
9. The motor according to claim 8, characterized in that A plug hole is provided on the side of the tail portion, and the motor further comprises a first fastener, which passes through the plug hole and is connected to the motor shaft.
10. The motor according to claim 8, characterized in that A through hole is provided at the bottom of the circuit board bracket, and the motor further comprises a second fastener, which passes through the through hole and is connected to the end cover.