CN209247038U - Encoder - Google Patents

Abstract

The utility model provides a kind of encoder, including main part, gasket and shell, the outer wall of the main part has flange, the flange protrudes from the surface of the outer wall and around the outer wall, and size of the periphery of the flange apart from the encoder axle center is greater than size of the root edge of the shell apart from the encoder axle center；The gasket is installed to the upper surface of the flange；The shell is placed on outside the main part along the axial direction of the encoder, and the root edge of the shell is connected on the surface of the gasket, and the shell is fixedly connected by the fastener being axially arranged along the encoder with the main part；The utility model passes through the fixed form that shell is fixed in main body by the fastener being axially arranged, simple and reasonable, assembles and easy to maintain quick；And shell is axially crimped on gasket by fastener and realizes sealing, sealing means are reliable and practical, improve sealing protection effect.

Description

Encoder

Technical field

The utility model relates to field power electronic equipment fields, more specifically to a kind of encoder.

Background technique

Encoder be it is a kind of signal or data are worked out, being converted to can be used to communicates, the signal shape of transimission and storage The equipment of formula, encoder have high-precision, and large range measuring, reaction is fast, Digital output feature.

Currently, encoder in the market is varied, but all there is certain shortcomings.Specifically, existing coding Device assembling fixed form is broadly divided into three classes:

The first kind is that multiple threaded holes are arranged in encoder shell side, presses encoder main body by adding a screw outside Portion fixes shell and main part stress.The fixed form be easy to cause casing deformation, thus influence encoder stability and Reliability.

Second class is to make structural member that certain deformation occur by way of extruding, and shell is fixed on main part with this. But the fixed form is needed by special equipment, and assembly operation is inconvenient, and follow-up maintenance disassembly is difficult, and practicability is insufficient.

Third class is that directly shell is adhesive on main part by the way of gluing bonding.The fixed form is equally deposited The problem of needing by special equipment, assembly operation is inconvenient, and follow-up maintenance disassembly is difficult.

In addition, existing encoder is mainly by the way that groove is arranged on main part side wall, by recessed to internal sealing Slot is embedded in O-ring, and outer casing inner wall friction and Extrusion O-ring is sealed when assembling, and this sealing means have the precision of components Higher requirement, and friction and Extrusion can be such that O-ring unbalance stress deforms.Through encoder encoder axis and encoder shell it Between concentricity will receive the thickness effect of sealing ring, sealing effect is bad, and the sealing protection grade of decoder internal is not high, shadow Ring the encoder service life.

Utility model content

The utility model embodiment is inconvenient, difficult in maintenance for the fixed form assembling of above-mentioned existing encoder and influences Encoder accuracy, practicability are insufficient and existing sealing means are unreliable, the ineffective these problems of sealing protection, provide one kind New encoder.

The technical solution that the utility model embodiment solves above-mentioned technical problem is to provide a kind of encoder, including main body The outer wall of portion, gasket and shell, the main part has flange, and the flange protrudes from the surface of the outer wall and surround The outer wall, and size of the periphery of the flange apart from the encoder axle center is greater than the root edge of the shell apart from the volume The size in code device axle center；The gasket is installed to the upper surface of the flange；Axial direction set of the shell along the encoder In outside the main part, the root edge of the shell is connected on the surface of the gasket, and the shell passes through along the volume The fastener that code device is axially arranged is fixedly connected with the main part.

Preferably, there is groove, the groove is around the outer wall, and the groove is located on the outer wall of the main part It is disposed adjacent above the flange and with the flange.

Preferably, axial direction of the upper surface of the flange perpendicular to the encoder.

Preferably, the encoder further includes oil sealing and encoder axis, and the oil sealing installation is on the housing；The volume Code device axis passes through the axis hole of the oil sealing, and passes through oil sealing adjust automatically axle center.

Preferably, there is the first socket section on the shell, there is the second socket section, and described first on the main part The shape and size for being socketed the inner wall of section are matched with the shape and size of the outer wall of the second socket section；The shell is with first The mode that the inner wall of socket section is affixed on the outer wall of the second socket section is placed on outside the main part.

Preferably, the flange is located at the bottom of the second socket section.

Preferably, the inner wall of the shell is in step, and the first socket section is located at the lower section of step surface.

Preferably, the fastener is screw, has first be axially arranged along the encoder solid on the shell Determine hole, there is the second fixation hole corresponding with first fixation hole on the main part, and the fastener passes through described the One fixation hole is fixed to second fixation hole.

Preferably, first fixed hole position is in the top surface of the shell, and second fixed hole position is in the main part Top surface.

Preferably, the outer wall of the main part has one or more axially position slots, the inner wall of the shell have with The corresponding one or more axial raised lines of the axially position slot.

The encoder of the utility model embodiment, which has the advantages that, is consolidated shell by the fastener being axially arranged The fixed form being scheduled in main body, it is simple and reasonable, it assembles and easy to maintain quick；And it is by fastener that shell is axial It is crimped on gasket and realizes sealing, sealing means are reliable and practical, improve sealing protection effect.

In addition, the utility model embodiment, which also sets up oil sealing, is arranged encoder axis, and can be complete by axial fixed form It totally disappeared except out-of-alignment influences between encoder axis and shell, further increase sealing protection effect.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of decoder internal section provided by the embodiment of the utility model；

Fig. 2 is the structural schematic diagram of encoder entirety section provided by the embodiment of the utility model.

Specific embodiment

In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain The utility model is not used to limit the utility model.

As shown in Figure 1, being the structural schematic diagram of decoder internal section provided by the embodiment of the utility model, the encoder It can be applied to power electronic equipment field, in particular in the encoder of high-protection level.Encoder packet in the present embodiment Main part 1, gasket 3 and shell 2, the generally cylindricality of main part 1, and the outer wall of the main part 1 are included with flange 12, flange 12 protrude from the surface of 1 outer wall of main part and surround 1 outer wall of main part, and the ruler in the outer peripheral surface range encoder axle center of flange 12 The size in the very little bottom margin range encoder axle center greater than shell 2, the i.e. maximum outer peripheral diameter of flange 12 are greater than shell 2 most Big outer peripheral diameter.Gasket 3 (rubber material can be used to be made) is mounted on 12 upper surface of flange of main part 1；Shell 2 is along coding The axial direction of device is placed on outside main part 1, and the bottom of shell 2 is connected on the surface of gasket 3, and shell 2 passes through along encoder axis It is fixedly connected to the fastener 4 of setting with main part 1, and is fallen into the bottom squeeze of shell 2 in gasket 3 by fastener 4, Realize the sealing between shell 2 and main body 1.The depth that the bottom squeeze of shell 2 falls into gasket 3 can be carried out by fastener 4 Adjustment.

Relative to existing encoder by the way that groove and O-ring cooperation is arranged in main part side wall, the present embodiment uses sealing Pad 3 is arranged in 12 upper surface of flange, and sealing structure is more reasonable, and when assembling is not in because 3 unbalance stress of gasket deforms Situation, and gasket 3 in axial depression and can tilt prominent 2 side wall of shell when assembling fastening, to the gap of junction into Row is fully sealed, and improves sealing effect.

Specifically, above-mentioned shell 2 can socket-connect in the following manner with main part 1: have the first socket section on shell 2 21, there is on main part 1 second socket section 11, and the shape and size of the inner wall of the first socket section 21 and the second socket section 11 The shape and size of outer wall match；Shell 2 is in such a way that the inner wall of the first socket section 21 is affixed on the outer wall of the second socket section 11 It is placed on outside main part 1；It is arranged cooperation by the first socket section 21 and the second socket section 11, shell 2 and main part 1 can be carried out just The coaxial positioning of step.

Above-mentioned encoder is matched by the first socket section 21 of setting and the shape and size of the second socket section 11, Yi Jiyou Shell 2 is fixed on main part 1 by the fastener 4 being axially arranged, and is different from existing encoder needs and is passed through by special equipment It is squeezed and deformed the fixed form with gluing, simple and reasonable, assembling and the maintenance all relatively convenients of the utility model encoder Fast, practicability is high.

Particularly, the flange 12 in aforementioned body portion 1 is located at the bottom of the second socket section 11, and the upper surface of flange 12 is hung down Directly in the axial direction of encoder, i.e. shell 2 is connect by the way that gasket 3 is vertical with flange 12, guarantees that shell 2 is coaxially set with main part 1 It sets.

Specifically, the inner wall of shell 2 is in step, and the first socket section 21 is located at the lower section of step surface, and shell 2 can be by interior The step of wall limits the depth capacity that bottom squeeze falls into gasket 3, to shell 2 can be carried out limit on encoder axial direction Position avoids 2 bottom transition of shell from squeezing gasket 3 and causes its ageing failure, extends the service life of gasket 3.

In addition, having groove on the outer wall of main part 1, the groove is around 1 outer wall of main part, and the groove is located at flange 12 Top is simultaneously disposed adjacent with flange 12, which can limit the gasket 3 being set on flange 12, in gasket 3 Between through-hole match with groove recess portion diameter, gasket 3 can be directly arranged into being positioned in groove by elastic deformation, tied Structure advantages of simple, it is quick and easy for installation and not high to the requirement on machining accuracy of each component, save man power and material.

As shown in connection with fig. 2, above-mentioned encoder further includes oil sealing 6 and encoder axis 5, and oil sealing 6 is mounted on shell 2；Coding The axis hole that device axis 5 passes through oil sealing 6 is fixed on main part 1, and encoder axis 5 and main part 1 are coaxial；And due to high-protection type Encoder has higher requirement for the concentricity of shell 2 and main part 1 and encoder axis 5, elastic and close by using having The good oil sealing 6 of sealing property eliminates out-of-alignment shadow between encoder axis 5 and shell 2 by the deformation adjust automatically axle center of oil sealing 6 It rings, is used cooperatively in conjunction with above-mentioned gasket 3, keeps sealing means relatively reliable practical, improve sealing protection effect, the utility model Encoder can reach high-protection level.

In addition, fastener 4 can be screw, there is the first fixation hole being axially arranged along encoder, main part 1 on shell 2 It is upper that there is the second fixation hole corresponding with the first fixation hole, and fastener 4 passes through the first fixation hole and is fixed by screwing to Second fixation hole；And the first fixed hole position is in the top surface of shell 2, and the second fixed hole position is in the top surface of main part 1.

Particularly, it can preferably be positioned in direction of rotation for convenience of shell 2, that is, above-mentioned first positioning hole and second is facilitated to determine Position hole accurate contraposition, the outer wall of main part 1 have one or more axially position slots, and the inner wall of shell 2 has axially fixed with this The corresponding one or more axial raised lines 22 of position slot, particular number can be determined according to actual use situation.

The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not It is confined to this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in Change or replacement, should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should It is subject to the protection scope in claims.

Claims (10)

1. a kind of encoder, which is characterized in that including main part, gasket and shell, the outer wall of the main part has convex Edge, the flange protrudes from the surface of the outer wall and around the outer wall, and the periphery of the flange is apart from the encoder The size in axle center is greater than size of the root edge of the shell apart from the encoder axle center；The gasket is installed to the flange Upper surface；The shell is placed on outside the main part along the axial direction of the encoder, and the root edge of the shell is connected to described On the surface of gasket, and the shell connects by the way that the fastener being axially arranged along the encoder and the main part are fixed It connects.

2. encoder according to claim 1, which is characterized in that there is groove on the outer wall of the main part, it is described recessed Grooved ring is around the outer wall, and the groove is located above the flange and is disposed adjacent with the flange.

3. encoder according to claim 1, which is characterized in that the upper surface of the flange is perpendicular to the encoder It is axial.

4. encoder according to claim 1, which is characterized in that the encoder further includes oil sealing and encoder axis, institute State oil sealing installation on the housing；The encoder axis passes through the axis hole of the oil sealing, and passes through the oil sealing adjust automatically Axle center.

5. encoder described in any one of -4 according to claim 1, which is characterized in that have the first socket on the shell Section, there is the second socket section, and the shape and size of the inner wall of the first socket section and described second set on the main part Connect the shape and size matching of the outer wall of section；The shell is affixed on the outer wall of the second socket section with the inner wall of the first socket section Mode be placed on outside the main part.

6. encoder according to claim 5, which is characterized in that the flange is located at the bottom of the second socket section.

7. encoder according to claim 6, which is characterized in that the inner wall of the shell is in step, and described first Socket section is located at the lower section of step surface.

8. encoder according to claim 1, which is characterized in that the fastener is screw, has edge on the shell The first fixation hole of the encoder being axially arranged has on the main part corresponding with first fixation hole second solid Determine hole, and the fastener passes through first fixation hole and is fixed to second fixation hole.

9. encoder according to claim 8, which is characterized in that first fixed hole position in the top surface of the shell, Second fixed hole position is in the top surface of the main part.

10. encoder according to claim 1, which is characterized in that the outer wall of the main part has one or more axis To locating slot, the inner wall of the shell has one or more axial raised lines corresponding with the axially position slot.