Encoder and reflective grating code disc assembly thereof

Abstract

The utility model relates to an encoder and a reflective grating code disc assembly thereof, because a grating disc and a support gasket are coaxially bonded together and then are installed on a shaft connecting sleeve with a connector, the strength of the grating disc is enhanced and the grating disc is prevented from being deformed; and the shaft connecting sleeve and the supporting gasket can be formed by machining small-size blanks, so that the machining cutting output of parts is small, the machining time is shortened, and the machining cost is low. In addition, the vertical positions of the grating disc and the supporting gasket can be adjusted according to the requirements of forward installation and reverse installation of the grating disc and the stator assembly of the encoder, and the requirements of forward installation and reverse installation of the grating disc and the stator assembly are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to an encoder and a reflection grating code disc assembly belong to encoder technical field. BACKGROUND

[0002] Among the current photoelectric encoder product types, the reflection type products have been applied more and more widely. The reflection grating assembly as the core component in the encoder is also applied in batches in the products. The very thin grating disc is generally bonded on the metal flange disc, and the metal flange disc also has a shaft sleeve connected with the motor shaft. In the current encoder, the metal flange disc for bonding the grating disc and the shaft sleeve for connecting the motor shaft are manufactured by machining in an integrated structure. Such a structure needs to perform a large amount of cutting on a relatively large metal blank, and the material to be removed is relatively large, the processing time is relatively long, and the cost is relatively high. SUMMARY

[0003] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the utility model is to provide an encoder and a reflection grating code disc assembly thereof, which has a relatively low processing cost.

[0004] To achieve the above-mentioned purpose, the utility model provides a reflection grating code disc assembly of an encoder, which comprises a shaft connecting sleeve for connecting a motor shaft, a support gasket, a grating disc and a compression ring. The grating disc and the support gasket are coaxially bonded together. The upper end of the shaft connecting sleeve has a connecting head, the support gasket and the grating disc are sleeved on the connecting head, the root of the connecting head has a stop surface, and the compression ring presses the support gasket and the grating disc towards the stop surface.

[0005] Preferably, the compression ring is fixed with the connecting head by bonding, riveting or interference fit.

[0006] Preferably, the compression ring is fixed with the connecting head by bonding, and an adhesive is filled between the inner hole of the compression ring and the outer sidewall of the connecting head.

[0007] Preferably, the grating disc is bonded on the upper surface of the support gasket, and the lower end surface of the compression ring is bonded on the upper surface of the grating disc.

[0008] Preferably, the grating disc is bonded on the lower surface of the support gasket, and the lower end surface of the compression ring is bonded on the upper surface of the support gasket.

[0009] Preferably, the middle part of the shaft connecting sleeve has an annular limiting platform, and the stop surface is the upper surface of the annular limiting platform.

[0010] Preferably, the sidewall of the shaft connecting sleeve is further provided with a screw hole for installing a jacking screw.

[0011] Corresponding to the reflective grating disc assembly of the encoder, the utility model also provides a kind of encoder, including the reflective grating disc assembly of the encoder of above-mentioned technical scheme and stator subassembly.

[0012] Preferably, the grating disc is bonded to the upper surface of the support pad, and the stator subassembly is located above the grating disc.

[0013] Preferably, the grating disc is bonded to the lower surface of the support pad, and the stator subassembly is located below the grating disc.

[0014] As described above, the reflective grating disc assembly of the encoder has the following beneficial effects: the reflective grating disc assembly of the encoder of the utility model is bonded coaxially with the support pad together and then installed on the shaft connecting sleeve with the connector, so that the strength of the grating disc is strengthened to prevent deformation, the shaft connecting sleeve and the support pad can be machined from small-sized blank, the machining cutting amount of the parts is small, the machining time is shortened, the processing cost is low, and the rotational inertia is low. In addition, the upper and lower positions of the grating disc and the support pad can be adjusted according to the needs of the normal installation and reverse installation of the encoder grating disc and the stator subassembly, to meet the needs of the normal installation and reverse installation of the grating disc and the stator subassembly.

[0015] The encoder of the utility model includes the above-mentioned reflective grating disc assembly, and of course has the above-mentioned beneficial effects, which will not be described here. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The structure schematic view of the reflective grating disc assembly of the encoder of the utility model is shown, the grating disc is bonded to the upper surface of the support pad, and is used for the normal installation of the grating disc and the stator subassembly.

[0017] Figure 2 The structure schematic view of the reflective grating disc assembly of the encoder of the utility model is shown, the grating disc is bonded to the upper surface of the support pad, and is used for the normal installation of the grating disc and the stator subassembly.

[0018] Figure 3 The structure schematic view of the shaft connecting sleeve is shown.

[0019] Figure 4 The structure schematic view of the normal installation of the grating disc and the stator subassembly of the encoder is shown.

[0020] Figure 5 The structure schematic view of the reverse installation of the grating disc and the stator subassembly of the encoder is shown.

[0021] ELEMENT NUMBER EXPLANATION

[0022] 1 shaft connecting sleeve

[0023] 2 support washer

[0024] 3 grating disc

[0025] 4 compression ring

[0026] 5 connector

[0027] 6 stop face

[0028] 7 annular limiting platform

[0029] 8 screw hole

[0030] 9 stator assembly

[0031] 10-1 code disc assembly

[0032] 10-2 code disc assembly DETAILED DESCRIPTION

[0033] The implementation of the present application is described below by specific embodiments, and other advantages and effects of the present application can be easily understood by those skilled in the art from the content disclosed in the present specification.

[0034] It should be understood that the structures, proportions, sizes, etc. shown in the drawings attached to the present specification are only used to cooperate with the content disclosed in the present specification for understanding and reading by those skilled in the art, and are not used to limit the limiting conditions of the implementation of the present application, and therefore do not have technical substantive significance. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects and purposes that can be produced by the present application, should still fall within the scope of the technical content disclosed by the present application. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and the like cited in the present specification are only for the convenience of clear understanding of the description, and are not used to limit the scope of the implementation of the present application. The change or adjustment of the relative relationship, without substantially changing the technical content, is also considered as the implementation of the present application.

[0035] As shown in Figure 1 and Figure 2 The present application provides a reflective grating code disc assembly of an encoder, which comprises a shaft connecting sleeve 1 for connecting a motor shaft, a support washer 2, a grating disc 3, and a compression ring 4. The grating disc 3 and the support washer 2 are coaxially bonded together. The upper end of the shaft connecting sleeve 1 has a connector 5, the support washer 2 and the grating disc 3 are sleeved on the connector 5, the root of the connector 5 has a stop face 6, and the compression ring 4 presses the support washer 2 and the grating disc 3 towards the stop face 6.

[0036] The utility model discloses a kind of reflective grating code disc components of encoder, since the grating disc 3 is bonded together coaxially with support gasket 2 then is installed on the shaft connecting sleeve 1 with connector 5, in this way, both strengthen the intensity of grating disc 3 and prevent its deformation, the peel strength between grating disc 3 and support gasket 2 can be increased by adopting ring 4 to press support gasket 2 and grating disc 3 tightly.

[0037] To strengthen the connecting strength between support gasket 2, grating disc 3 and shaft connecting sleeve 1, adhesive can be applied on stop surface 6 to bond support gasket 2 and grating disc 3 assembly on stop surface 6.

[0038] The reflective grating code disc component of the utility model can be applied to application scenarios with small structure size. For this case, the thickness of the compression ring 4 is small. To facilitate the fixation of the compression ring 4 on the connector 5, the compression ring 4 can be fixed on the connector 5 by adhesion, riveting or interference fit. To strengthen the connecting strength between the compression ring 4 and the connector 5, adhesive can be filled between the inner hole of the compression ring 4 and the outer wall of the connector 5 to strengthen the connecting strength between the compression ring 4 and the connector 5 when the compression ring 4 is fixed on the connector 5 by adhesion.

[0039] When selecting adhesive, the working conditions of the encoder, such as temperature range, humidity, chemical environment and required mechanical strength, need to be considered. Polyurethane adhesive, acrylic adhesive, instant adhesive, silicone adhesive, etc. can be used as adhesive to bond the compression ring 4, support gasket 2, grating disc 3 and shaft connecting sleeve 1.

[0040] The reflective grating code disc component of the utility model can adapt to the needs of the grating disc 3 and the stator assembly 9 being installed in the correct direction and being installed in the reverse direction, for example, Figure 1The code disc assembly 10-1 shown is a structure schematic view of the grating disc 3 of the encoder and the stator assembly 9 in positive assembly, the grating disc 3 is bonded on the upper surface of the support pad 2, the lower end surface of the compression ring 4 is bonded on the upper surface of the grating disc 3, and the stator assembly 9 is located above the grating disc 3.

[0041] As shown in the figure, Figure 2 The code disc assembly 10-2 shown is a structure schematic view of the grating disc 3 of the encoder and the stator assembly 9 in reverse assembly, the grating disc 3 is bonded on the lower surface of the support pad 2, the lower end surface of the compression ring 4 is bonded on the upper surface of the support pad 2, and the stator assembly 9 is located below the grating disc 3.

[0042] The grating disc 3 of the encoder and the stator assembly 9 in positive assembly and reverse assembly are selected according to different application scenarios, and the reflective grating code disc assembly of the encoder can select the grating disc 3 and the stator assembly 9 in positive assembly or reverse assembly according to actual application scenarios.

[0043] As a preferred embodiment, as shown in the figure, Figure 3 The shaft connecting sleeve 1 has an annular limiting table 7 in the middle, and the stop surface 6 is the upper surface of the annular limiting table 7. In order to facilitate the fixation of the shaft connecting sleeve 1 and the motor shaft, screw holes 8 for installing jacking screws are further arranged on the side wall of the shaft connecting sleeve 1. After the shaft connecting sleeve 1 is sleeved on the motor shaft, the shaft connecting sleeve 1 can be fixed on the motor shaft through the jacking screws.

[0044] Corresponding to the reflective grating code disc assembly of the encoder, the utility model also provides a kind of encoder, including the reflective grating code disc assembly of the encoder and the stator assembly 9 described in the above technical solutions.

[0045] As shown in the figure, Figure 4 It is the encoder of the grating disc 3 and the stator assembly 9 in positive assembly, the grating disc 3 is bonded on the upper surface of the support pad 2, and the stator assembly 9 is located above the grating disc 3.

[0046] As shown in the figure, Figure 5 It is the encoder of the grating disc 3 and the stator assembly 9 in reverse assembly, the grating disc 3 is bonded on the lower surface of the support pad 2, and the stator assembly 9 is located below the grating disc 3.

[0047] Based on the technical scheme of the above embodiment, the encoder and the reflective grating disc assembly thereof of the utility model, since the grating disc 3 is bonded together coaxially with the support gasket 2 and then is installed on the shaft connecting sleeve 1 with the connector 5, in this way, the strength of the grating disc 3 is strengthened to prevent its deformation, the support gasket 2 and the grating disc 3 are pressed tightly by the pressing ring 4 to increase the peeling strength between the grating disc 3 and the support gasket 2.Moreover, the shaft connecting sleeve 1 and the support gasket 2 are all manufactured by integral processing with large size and large specification and are adjusted to be separately processed with small size and small specification, the shaft connecting sleeve 1 and the support gasket 2 can all be processed from blank materials with small size, the machining cutting amount of the parts is small, the structure of the parts is also small, the rotational inertia is low, the processing time is shortened, and the processing cost is low.In addition, the up-down position of the grating disc 3 and the support gasket 2 can be adjusted according to the need of the normal installation and reverse installation of the encoder grating disc 3 and the stator assembly 9, and the need of the normal installation and reverse installation of the grating disc 3 and the stator assembly 9 can be met.

[0048] In summary, the utility model effectively overcomes the various shortcomings in the prior art and has high industrial utilization value.

[0049] The above embodiment only exemplarily illustrates the principle and effect of the utility model, and is not used for limiting the utility model. Any person skilled in the art can modify or change the above embodiment without departing from the spirit and scope of the utility model. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the utility model should be covered by the claims of the utility model.

Claims

1. A reflective grating code disk assembly for an encoder, characterized in that, The application relates to a shaft connecting sleeve for connecting a motor shaft, a supporting washer, a grating disc and a compression ring; the grating disc and the supporting washer are coaxially bonded together; the upper end of the shaft connecting sleeve is provided with a connecting head, the supporting washer and the grating disc are sleeved on the connecting head, the root of the connecting head is provided with a stop surface, and the compression ring is used for pressing the supporting washer and the grating disc towards the stop surface.

2. The encoder's reflective grating code disc assembly of claim 1, wherein: The compression ring is fixed with the connecting head by means of bonding, riveting or interference fit.

3. The encoder's reflective grating code disc assembly of claim 1, wherein: The compression ring is fixed with the connecting head by means of bonding, and adhesive is filled between the inner hole of the compression ring and the outer side wall of the connecting head.

4. The encoder's reflective grating code disc assembly of claim 1, wherein: The grating disc is bonded on the upper surface of the supporting washer, and the lower end surface of the compression ring is bonded on the upper surface of the grating disc.

5. The encoder's reflective grating code disk assembly of claim 1, wherein: The grating disc is bonded on the lower surface of the supporting washer, and the lower end surface of the compression ring is bonded on the upper surface of the supporting washer.

6. The encoder's reflective grating code disc assembly of claim 1, wherein: The middle part of the shaft connecting sleeve is provided with an annular limiting table, and the stop surface is the upper surface of the annular limiting table.

7. The encoder's reflective grating code disk assembly of claim 1, wherein: The sidewall of the shaft connecting sleeve is further provided with a screw hole for mounting a jacking screw.

8. An encoder, characterized by The application relates to a reflective grating disc assembly and a stator assembly comprising the encoder of claim 1.

9. The encoder of claim 8, wherein: The grating disc is bonded on the upper surface of the supporting washer, and the stator assembly is located above the grating disc.

10. The encoder of claim 8, wherein: The grating disc is bonded on the lower surface of the supporting washer, and the stator assembly is located below the grating disc.

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