CN218066529U

CN218066529U - Internal fixing mechanism of integrally mounted split type encoder

Info

Publication number: CN218066529U
Application number: CN202221397503.3U
Authority: CN
Inventors: 侯文科; 邓以森
Original assignee: Motong Transmission And Control Shenzhen Co ltd
Current assignee: Motong Transmission And Control Shenzhen Co ltd
Priority date: 2022-06-07
Filing date: 2022-06-07
Publication date: 2022-12-16
Anticipated expiration: 2032-06-07

Abstract

The utility model discloses an internal fixing mechanism of an integrally installed split type encoder, which comprises a pre-assembly arranged inside an encoder main body, wherein the pre-assembly is detachably connected with the encoder main body; one side of the pre-assembly, which is close to the rotating shaft, is provided with a conical groove or a circular groove, and the end part of the groove is respectively provided with a first fixed end and a second fixed end which are in contact connection with the rotating shaft. The utility model discloses a reach the atress equilibrium after special customized prepackage screw locks grating subassembly and encoder main part, not only fixed reliable, relative displacement can not take place, guarantee that the encoder does not produce not hard up dislocation in transportation or end user installation, can obviously simplify encoder spare part structure moreover, reduce the processing cost, and make the fixed more firm reliable between grating subassembly and the encoder main part, the not hard up grating that avoids transportation and installation to lead to collides with even, obviously reduces the defective rate.

Description

Internal fixing mechanism of integrally mounted split type encoder

Technical Field

The utility model relates to an internal fixing spare especially relates to an internally fixed establishment of split type encoder of unit mount.

Background

With the rapid development of industrial 4.0 technology and the progress of "china manufacturing 2025", the demands of automation equipment and production lines on the precision, speed and production efficiency thereof are increasing day by day. The encoder is a feedback unit capable of feeding back position, speed and angle in real time, and is widely applied to the fields of servo motors, 3C, industrial robots, intelligent factories, CNC (computerized numerical control) equipment, automation equipment, non-standard equipment, production lines and the like. In recent years, with miniaturization and rapid delivery of devices, the volume of the encoder is required to be higher.

The existing encoder is mainly structurally divided into an integral encoder and a split encoder, wherein the integral encoder is simple to mount, has low requirements on mounting environment, is larger in size or thickness, is more applied to scenes with low size requirements and insensitive cost, and is often used as a feedback unit or an external displacement and speed measurement scene on a large-flange-size servo motor. Compared with a split encoder, the integral encoder has higher overall cost and shorter service life due to the existence of the bearing.

Split type encoder volume is less, and thickness is thinner, does not have the bearing, for integral encoder, simple structure has prolonged life, and density is high, and is with low costs, nevertheless installs more complicatedly, and is higher to the machining precision and the positioning accuracy requirement of spare part, and the installation environment requires highly, and the installation defective rate is higher, and efficiency is lower.

The installation core of the split encoder is how to quickly and accurately fix the relative position of the grating component and the body component in the split encoder, so that the relative displacement of the grating component and the body component can not occur, the relative position of the grating and the reading head is ensured to be accurate, and the accuracy of the output signal of the encoder is ensured; meanwhile, the structural complexity and the processing cost of the parts are reduced as much as possible, so that the mounting efficiency and the yield are improved. The fixed knot who goes up the inside grating subassembly of common split type encoder and body subassembly in the market at present constructs, mainly has following several:

1. (CN 105371881A) a plurality of positioning blocks are arranged between the grating component and the body component, the side wall of a rotating shaft of the grating component is provided with an annular positioning clamping groove, the side wall of the body component is provided with a plurality of clamping block grooves, and the relative position between the grating component and the body component is fixed through clamping and positioning among the positioning blocks, the annular positioning clamping groove and the clamping block grooves. The fixing structure scheme has a complex structure, a large number of parts and high requirements on the processing precision of the parts, mechanical processing is inevitable to have certain shape and position deviation, and the positioning precision is not easy to guarantee;

2. (CN 108731709A) 2 or more than 2 threaded holes in the radial direction are arranged on the rotating shaft of the grating assembly, the body assembly is provided with corresponding preassembled through holes in the radial direction, the preassembled screws penetrate through the preassembled through holes and then are locked with the rotating shaft of the grating assembly, and the tail parts of the preassembled screws and the surface of the body assembly form friction force to fix the relative position between the grating assembly and the body assembly after the preassembled screws are locked; the scheme has the advantages of simple structure, low requirement on the processing precision of parts, simple installation, unstable fixing mode and easy looseness in the transportation process or the installation process of a terminal user, thereby influencing the positioning precision;

3. (CN 214308807U) the rotating shaft of the grating component is provided with 2 or more than 2 conical grooves or 1 annular groove, the body component is provided with 2 or more than 2 pre-installation screw holes in radial direction, after the pre-installation screws pass through the pre-installation screw holes, the conical or round top of the screws support against the corresponding conical or annular groove on the rotating shaft, thus fixing the relative position between the grating component and the body component; this scheme structure and installation are succinct, but require very high to spare part machining precision, and machining has certain shape and positional deviation unavoidably, and when leading to actual installation, the skew point of expectation of the point of pre-installation screw top and rotation axis contact, grating subassembly atress direction can not reach the anticipated effect to influence the location between grating subassembly and the body subassembly, the yield is difficult for guaranteeing.

SUMMERY OF THE UTILITY MODEL

In order to solve the weak point that above-mentioned technique exists, the utility model provides an internally fixed establishment of split type encoder of unit mount, it is complicated that aim at solves the internally fixed structure of split type encoder, and zero portion machining precision requires highly, is difficult to accurate, reliably fixes a position the grating, requires highly to the environment, and the installation yield hangs down the scheduling problem.

In order to solve the technical problem, the utility model discloses a technical scheme be: an internal fixing mechanism of an integrally installed split encoder comprises a pre-assembly arranged inside an encoder main body, wherein the pre-assembly is detachably connected with the encoder main body;

one side of the pre-assembly, which is close to the rotating shaft, is provided with a conical groove or a circular groove, and the end part of the groove is respectively provided with a first fixed end and a second fixed end which are in contact connection with the rotating shaft.

Preferably, the inside of encoder main part is provided with the holding chamber, is provided with the grating subassembly in the holding chamber, is provided with first installation department, second installation department along radial direction interval in the encoder main part, and the matching has been inserted in the first installation department and has been put the package.

Preferably, one end of the first installation part and one end of the second installation part are respectively communicated with the accommodating cavity, and the other ends of the first installation part and the second installation part are communicated with the outside.

Preferably, the grating assembly comprises a rotating shaft, the rotating shaft is provided with a pre-installation part and a locking part at intervals along the radial direction, the pre-installation part is communicated with the first installation part, and the locking part is communicated with the second installation part.

Preferably, the first mounting portions are through holes, the number of the first mounting portions is at least three, and the pre-assembly is a pre-assembly screw.

Preferably, the subassembly includes the rotatory section in inboard contact section, the outside, and the diameter of contact section is less than the diameter of rotatory section, and the tip card of contact section is arranged in pre-installation portion in, is provided with the external screw thread on the rotatory section, and rotatory section meets with first installation department screw thread.

Preferably, the first installation part comprises a communication section, a connection section and a thread section which are sequentially connected from inside to outside, and the diameters of the communication section, the connection section and the thread section are sequentially increased.

Preferably, the pre-mount portion is an optical axis provided on the rotation shaft.

Preferably, the second installation portion is a through hole, the number of the second installation portion is at least one, and a locking piece is arranged in the locking portion in a matched mode.

Preferably, the encoder main body is provided with at least one fixing hole.

The utility model discloses a pre-installation screw of special customization reaches the atress after with grating subassembly and the locking of encoder main part balanced, and not only fixed reliable can not take place relative displacement, guarantees that the encoder does not produce not hard up dislocation in transportation or end user installation, can obviously simplify encoder spare part structure moreover, reduces the processing cost to make fixed more firm reliable between grating subassembly and the encoder main part, avoid the not hard up grating that leads to with the installation colliding with even, obviously reduce the defective rate.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a partial structural schematic diagram of fig. 1.

Fig. 3 is a sectional view of the structure of fig. 1 before installation.

Fig. 4 is a sectional view of the assembled structure of fig. 1.

Fig. 5 is an exploded schematic view of fig. 3.

In the figure: 1. an encoder main body; 2. pre-assembly; 4. a locking member; 5. a fixing hole; 6. PCBA; 11. a first mounting portion; 12. a second mounting portion; 21. a first fixed end; 22. a second fixed end; 31. a rotating shaft; 32. a pre-assembly part; 33. a locking portion; 34. and (4) moving the grating.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

The internal fixing mechanism of the integrally-installed split encoder shown in fig. 1 comprises a pre-assembly 2 arranged inside an encoder main body, wherein the pre-assembly 2 is detachably connected with the encoder main body;

as shown in fig. 2, a tapered groove or a circular groove is formed on one side of the package 2 close to the rotating shaft 31, and a first fixing end 21 and a second fixing end 22 contacting with the rotating shaft 31 are respectively arranged at the ends of the groove.

At least one part of the preassembly screw is screwed into the first mounting part (radial threaded hole) of the encoder main body, so that the grating assembly is fixedly connected with the encoder main body. The pre-mounting screws have the effects that the grating assembly and the encoder main body are relatively fixed, the position balance is achieved, and relative displacement cannot occur, so that the relative position of the grating and the reading head is accurate, the accuracy of the output signal of the encoder is guaranteed, and all the fixing screws are firstly screwed and then all the pre-mounting screws are loosened until an end user installs the encoder.

The middle of the head of the pre-assembly is provided with a conical groove or a circular groove, namely the head of the pre-assembly is a circle of annular bulge (or annular dentate bulge), one part of the pre-assembly is screwed into a first mounting part (a radial threaded hole) of the encoder main body, the head of the pre-assembly is propped against a rotating shaft of the grating assembly, so that the corresponding position of the rotating shaft of the grating assembly and the annular bulge of the head of the pre-assembly generate fine deformation, and each head of the pre-assembly and the rotating shaft of the grating assembly have 2 fixing points with different heights, namely a first fixing end 21 and a second fixing end 22 (common screws can only generate one fixing point, so that the fixing points can be found at expected positions only when the machining precision of parts is high, the expected stress direction can be reached, and the actual machining is difficult to realize), after the pre-assembly is completely locked, a plurality of fixing points are generated, the whole structure is simple, only the machining precision of the parts is low, the grating assembly and the encoder main body can be fixed very reliably, and the grating assembly and the encoder main body are not easy to loosen in the transportation and the mounting process of end users.

Preferably, the encoder body 1 is provided with a receiving cavity inside, the receiving cavity is provided with a grating assembly inside, the encoder body is provided with a first mounting portion 11 and a second mounting portion 12 at intervals along the radial direction, and the package 2 is inserted into the first mounting portion 11 in a matching manner.

Preferably, one end of each of the first mounting portion 11 and the second mounting portion 12 is communicated with the accommodating cavity, and the other end is communicated with the outside. The first and second mounting

portions

11 and 12 are provided at intervals in the circumferential direction of the encoder body.

As shown in fig. 3, the first mounting portions 11 are through holes, the number of the first mounting portions 11 is at least three, and the pre-assembly 2 is a pre-assembly screw. In order to guarantee that the stability of pre-installation is better, first installation department is equipped with three at least. The number of the second installation parts can be one or more than two, and when the number of the second installation parts is more than two, a first installation part is arranged between two adjacent second installation parts.

Preferably, the package 2 includes an inner contact section and an outer rotation section, the diameter of the contact section is smaller than that of the rotation section, a step is formed at the joint of the contact section and the rotation section, the end of the contact section is clamped in the pre-assembly portion 32, an external thread is arranged on the rotation section, and the rotation section is in threaded connection with the first installation portion 11.

Preferably, the first mounting portion 11 includes a communication section, a connection section, and a threaded section that are sequentially connected from inside to outside, and diameters of the communication section, the connection section, and the threaded section are sequentially increased.

The punishment of being connected of intercommunication section and linkage segment, linkage segment and screw thread section do not forms the step, and the structure of package cooperates with the structure of first installation department, can make the package twist in to first installation department or by when twisting out in the first installation department, and is more stable, and the step of first installation department junction also can play fine limiting displacement, produces the piece when can effectively preventing the mechanism cooperation simultaneously and brings into the encoder sealed chamber.

As shown in fig. 4, the second mounting portion 12 is a through hole, the number of the second mounting portions 12 is at least one, and the locking member 4 is fittingly disposed in the locking portion 33.

Preferably, the locking portion 33 is a fixing threaded hole for fixing the grating assembly, the number of the fixing threaded holes is at least one, the locking member 4 is a fixing screw, and the locking member 4 penetrates through the second mounting portion 12 and is in threaded connection with the locking portion 33. And a second mounting part 12 corresponding to the grating component fixing threaded hole is formed on the encoder main body, so that a locking part can be fixed conveniently. The locking piece 4 is used for fixedly connecting the rotating shaft of the grating assembly with a motor shaft of a user.

As shown in fig. 5, the grating assembly includes a rotating shaft 31, the rotating shaft 31 is provided with a pre-assembly portion 32 and a locking portion 33 at intervals along a radial direction, the pre-assembly portion 32 and the locking portion 33 are provided at intervals along a circumferential direction of the rotating shaft 31, the pre-assembly portion 32 is communicated with the first mounting portion 11, and the locking portion 33 is communicated with the second mounting portion 12. The grating assembly is located partially or entirely inside the encoder body.

Preferably, the pre-mount portion 32 is an optical axis provided on the rotating shaft. The matching position of the rotating shaft of the grating assembly and the pre-assembly is an optical axis.

Preferably, the encoder body 1 is provided with at least one fixing hole 5 for fixing the encoder body.

In addition, the encoder main part still includes PCBA6, and PCBA6 lid is located the tip of holding the chamber and is formed sealed chamber. The grating component is provided with a movable grating 34, the movable grating is arranged on the rotating shaft, and the movable grating and the rotating shaft are coaxially arranged. The moving grating may be a magnetic encoder disk, a capacitive encoder rotor, or an inductive encoder rotor.

The utility model discloses not only confine photoelectric encoder's installation to, also be applicable to non-photoelectric encoder, like magnetic encoder, capacitance encoder etc. if the split type magnetic encoder of integral type installation, or capacitanc encoder, with the aforesaid move the grating become magnetic disc or electric capacity dish (PCB dish, nylon dish etc.) can to this analogizes.

In the specific operation, the method is divided into two steps of encoder preassembly and encoder formal installation.

Pre-assembling an encoder: the grating assembly is placed in the accommodating cavity of the encoder main body, and is fixedly connected with the encoder main body through a pre-assembly (pre-assembly screw). After the pre-installed screws are installed, the PCBA is placed at the corresponding position on the encoder main body and is fixed.

Formally installing an encoder:

the method comprises the following steps: after the encoder main body is fixed to the installation position, all locking pieces (fixing screws) are directly screwed into locking parts (fixing threaded holes) of the rotating shaft, wherein the number of the fixing screws is at least one, and at least one second installation part (through hole) is arranged on the encoder main body correspondingly, so that the fixing screws are conveniently screwed in or dismounted. And after the fixing screws are screwed in, the preassembled screws are all unscrewed, or the preassembled screws are sequentially screwed out and retreated to a set position, and then the installation is finished. (note: it is also possible to install the fixing screw at a predetermined position in the fixing threaded hole of the rotary shaft in advance at the encoder pre-assembly stage and to directly screw it at the final installation stage).

The method 2 comprises the following steps: after the encoder main body is fixed to the installation position, the pre-installed screws closest to the fixing screw holes are removed, the fixing screws are screwed into the fixing screw holes of the rotating shaft, and the rest of the pre-installed screws are removed or the pre-installed screws are unscrewed to the set positions, so that the installation is completed. The number of the fixing screws is at least one, and correspondingly, the encoder main body is provided with at least one through hole. (note: it is also possible to install a fixing screw at a predetermined position in a fixing threaded hole of a rotary shaft in advance at the encoder pre-assembly stage and to directly screw the fixing screw at the final installation stage).

The utility model is not only simple in whole structure, it is low to spare part machining precision requirement, realizes little volume structure, requires lowly to the environment moreover, and the installation is simple, conveniently counterpoints, and installation effectiveness and yield are high, can extensively be applicable to each integrally mounted's split type encoder.

The above embodiments are not intended to limit the present invention, the present invention is not limited to the above examples, and the technical personnel in the technical field are in the technical solution of the present invention, and the changes, modifications, additions or replacements made within the scope of the technical solution of the present invention also all belong to the protection scope of the present invention.

Claims

1. The utility model provides an internal fixation mechanism of split type encoder of unit mount which characterized in that: the encoder comprises a pre-assembly (2) arranged inside an encoder main body, wherein the pre-assembly (2) is detachably connected with the encoder main body (1);

one side of the pre-assembly (2) close to the rotating shaft (31) is provided with a conical groove or a circular groove, and the end part of the groove is respectively provided with a first fixed end (21) and a second fixed end (22) which are in contact connection with the rotating shaft (31).

2. The internal fixation mechanism of an integrally mounted split encoder as claimed in claim 1, wherein: the inside of encoder main part (1) is provided with the holding chamber, the holding intracavity is provided with the grating subassembly, is provided with first installation department (11), second installation department (12) along radial direction interval in the encoder main part, the matching has inserted package (2) in first installation department (11).

3. The internal fixing mechanism of the integrally mounted split encoder as claimed in claim 2, wherein: one ends of the first installation part (11) and the second installation part (12) are respectively communicated with the accommodating cavity, and the other ends of the first installation part and the second installation part are communicated with the outside.

4. The internal fixing mechanism of the integrally mounted split encoder as claimed in claim 2, wherein: the grating assembly comprises a rotating shaft (31), wherein a pre-installation part (32) and a locking part (33) are arranged on the rotating shaft (31) at intervals along the radial direction, the pre-installation part (32) is communicated with the first installation part (11), and the locking part (33) is communicated with the second installation part (12).

5. The internal fixing mechanism of the integrally mounted split encoder as claimed in claim 3, wherein: the first installation part (11) is a through hole, the number of the first installation parts (11) is at least three, and the pre-assembly (2) is a pre-assembly screw.

6. The internal fixing mechanism of the integrally mounted split type encoder according to claim 1, wherein: the pre-assembly (2) comprises an inner contact section and an outer rotating section, the diameter of the contact section is smaller than that of the rotating section, the end portion of the contact section is clamped in the pre-assembly portion (32), an external thread is arranged on the rotating section, and the rotating section is in threaded connection with the first installation portion (11).

7. The internal fixing mechanism of the integrally mounted split type encoder according to claim 5, wherein: first installation department (11) are including intercommunication section, linkage segment, the screw thread section that connects gradually from inside to outside, the diameter of intercommunication section, linkage segment, screw thread section increases in proper order.

8. The internal fixation mechanism of an integrally mounted split encoder as claimed in claim 4, wherein: the pre-assembly portion (32) is an optical axis arranged on the rotating shaft.

9. The internal fixation mechanism of an integrally mounted split encoder as claimed in claim 4, wherein: second installation department (12) are the through-hole, and the quantity of second installation department (12) is one at least, and the matching is provided with retaining member (4) in locking portion (33).

10. The internal fixing mechanism of the integrally mounted split type encoder according to claim 1, wherein: the encoder main body (1) is provided with at least one fixing hole (5), and the number of the fixing holes (5) is at least one.