Connecting piece, mounting part, motor and encoder

Abstract

The utility model discloses a connecting piece, mounting part, motor and encoder, the connecting piece is cylindrical, the two ends of the cylindrical connecting piece are provided with openings to respectively form a first connecting position and a second connecting position, the first connecting position is used for connecting a rotating shaft body of the motor, and the second connecting position is used for connecting the rotating shaft body of the motor. And the second connecting position is used for connecting a to-be-sensed unit of the motor. According to the utility model, the rotating shaft body and the to-be-sensed unit are connected and fixed through the connecting piece, and the existing assembly structures such as a magnetic steel support are omitted, so that not only is the installation simplicity of the to-be-sensed unit improved, but also the production cost can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor equipment technical field, especially a connecting piece, mounting part, motor and encoder. BACKGROUND

[0002] The encoder is a kind of sensing equipment that converts rotary displacement into a series of digital pulse signals to realize position measurement;Encoder is widely used in the field of electromechanical control, engineering control with its high measurement accuracy.

[0003] At present, motor code disc is usually fixed by magnetic steel sleeve on motor rotating shaft through magnetic steel support, and magnetic steel support is locked on motor rotating shaft through the structure such as side top wire, which has the defects such as inconvenient installation and complex operation. UTILITY MODEL CONTENTS

[0004] The utility model embodiment provides a connecting piece, mounting part, motor and encoder, to solve the problems of complex installation process, high cost of existing encoder.

[0005] Firstly, the utility model embodiment provides a connecting piece, the connecting piece is cylindrical connecting piece, and the both ends of the cylindrical connecting piece are open to form first connection site and second connection site respectively, wherein the first connection site is used to connect the rotating shaft body of motor, and the second connection site is used to connect the unit to be sensed of motor.

[0006] Further, the inner wall of the first connection site is provided with a plurality of first protrusions and / or first grooves.

[0007] Further, the second connection site covers the front end face and at least part of the side face of the unit to be sensed.

[0008] Further, the material of the connecting piece is any one of plastic, epoxy glue or metal.

[0009] Secondly, the utility model embodiment provides a mounting part, comprising:

[0010] Rotating shaft body;

[0011] Unit to be sensed, set to the rear end of the rotating shaft body, used to cooperate with the sensing unit of encoder to obtain motor position information;

[0012] Wherein, the unit to be sensed and the rotating shaft body are integrally formed or detachably connected by the connecting piece as any one of the above.

[0013] Further, the rotating shaft body and the unit to be sensed have a gap in an axial direction, and the connecting piece is arranged to contact the rear end surface of the rotating shaft body and the front end surface of the unit to be sensed.

[0014] Further, the rear end surface of the rotating shaft body is provided with a second protrusion matched with the first recess, or a second recess matched with the first protrusion.

[0015] Further, the unit to be sensed comprises at least one of a magnetic steel, an optical code disc or an inductive metal block code disc.

[0016] In a third aspect, the utility model discloses an encoder, comprising the mounting component of any one of the above.

[0017] In a fourth aspect, the utility model discloses a motor, comprising the mounting component of any one of the above.

[0018] The utility model discloses a connecting piece, mounting component, motor and encoder, the connecting piece is cylindrical connecting piece, the both ends of cylindrical connecting piece are provided with the opening to form first connecting position and second connecting position respectively, wherein, first connecting position is used to connect the rotating shaft body of motor, and second connecting position is used to connect the unit to be sensed of motor. The utility model discloses a connecting piece to connect and fix the rotating shaft body and the unit to be sensed, and the existing magnetic steel support and other assembly structures are saved, so that not only improve the installation simplicity of the unit to be sensed, but also can reduce production cost. ACCURATE DRAWINGS

[0019] In order to more clearly illustrate the technical scheme of the utility model embodiment, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0020] Figure 1 The structure schematic view of the connecting piece provided by the embodiment of the utility model is shown in the figure.

[0021] Figure 2 The structure schematic view of the connecting piece provided by the embodiment of the utility model is shown in the figure.

[0022] Figure 3 The structure schematic view of the mounting component provided by the embodiment of the utility model is shown in the figure.

[0023] Figure 4 The structure schematic view of the mounting component provided by the embodiment of the utility model is shown in the figure.

[0024] Figure 5 A cross-sectional view of a mounting component is provided for embodiments of the present application. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application.

[0026] It should be understood that the terms "comprising" and "including" as used in the specification and the appended claims indicate the presence of the described features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0027] It should also be understood that the terms used in the present application specification are only for the purpose of describing particular embodiments and are not intended to limit the present application. As used in the present application specification and the appended claims, the singular forms "a", "an" and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0028] It should be further understood that the term "and / or" as used in the present application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.

[0029] Please see the following Figure 1 and Figure 2 The embodiments of the present application provide a connecting piece 13, characterized in that the connecting piece 13 is a cylindrical connecting piece, and the two ends of the cylindrical connecting piece are open to form a first connecting position 131 and a second connecting position 132, respectively, wherein the first connecting position 131 is used to connect a rotating shaft body 11 of a motor, and the second connecting position 132 is used to connect a to-be-sensed unit 12 of the motor.

[0030] The embodiments connect and fix the rotating shaft body 11 and the to-be-sensed unit 12 through the connecting piece 13, and the existing magnetic steel support and other assembly structures are omitted, so that the installation simplicity of the to-be-sensed unit 12 is improved, and the production cost is reduced.

[0031] In an embodiment, the inner wall of the first connecting position 131 is provided with a plurality of first protrusions and / or first grooves.

[0032] In addition, the second connecting position 132 covers the front end surface and at least part of the side surface of the unit to be sensed 12.

[0033] In the embodiment, the connecting member 13 is fixedly connected to the shaft body 11 and the unit to be sensed 12 through the protrusion and / or the groove arranged on the inner wall of the first connecting position 131, and the second connecting position 132 is arranged to cover the front end surface and at least part of the side surface of the unit to be sensed 12, so as to improve the connection stability between the connecting member 13 and the unit to be sensed 12.

[0034] In specific embodiments, the material of the connecting member 13 is any one of plastic, epoxy glue or metal. In other words, the material of the connecting member 13 can be determined according to the actual scene requirement, for example, when an integrated structure is required, the connecting member 13 can be made of plastic or epoxy glue, and when a detachable structure is required, the connecting member 13 can be made of metal.

[0035] In combination Figures 3 to 5 , the utility model discloses an installation component 1, comprising:

[0036] The shaft body 11;

[0037] The unit to be sensed 12 is arranged at the rear end of the shaft body 11 and is used for cooperating with a sensing unit of an encoder to obtain motor position information.

[0038] The unit to be sensed 12 is fixedly connected to the shaft body 11 through the connecting member 13.

[0039] In the embodiment, the installation component 1 comprises the shaft body 11, the unit to be sensed 12 and the connecting member 13 arranged between the shaft body 11 and the unit to be sensed 12. In the embodiment, the shaft body 11 and the unit to be sensed 12 are fixedly connected through the connecting member 13, and the existing magnetic steel holder and other assembly structures are omitted. Therefore, the installation simplicity of the unit to be sensed 12 is improved, and the production cost is reduced. In addition, the unit to be sensed 12 is isolated from the shaft body 11 through the connecting member 13. Therefore, the magnetic field influence of other structures on the unit to be sensed 12 is reduced or even avoided, and the magnetic field uniformity of the unit to be sensed 12 is improved.

[0040] In an embodiment, the shaft body 11 and the unit to be sensed 12 have a gap in the axial direction, so that the connecting member 13 enters and respectively contacts the rear end surface of the shaft body 11 and the front end surface of the unit to be sensed 12.

[0041] The embodiment sets a gap between the rotating shaft body 11 and the unit to be sensed 12, so that the connecting piece 13 enters and connects and fixes the rotating shaft body 11 and the unit to be sensed 12, thus not only simplifying the installation process, but also further reducing the influence of the magnetic field on the unit to be sensed 12 through the set gap, and further improving the magnetic field uniformity of the unit to be sensed 12.

[0042] In an actual application scenario, the connecting piece 13 is a plastic section formed by injection molding;

[0043] Alternatively, the connecting piece 13 is an epoxy section formed by glue filling.

[0044] The embodiment adopts a plastic section formed by injection molding or an epoxy section formed by glue filling as the connecting piece 13, so that the rotating shaft body 11 and the unit to be sensed 12 become an integrated structure, so that it can be ensured that the connecting piece 13 will not produce magnetism and will not conduct magnetism, thereby producing a magnetic isolation effect, avoiding the destruction of the magnetic field uniformity of the unit to be sensed 12. Here, the plastic section refers to a plastic material composed of synthetic resin and other auxiliary substances, which can be processed into a shape by heating, and is widely used in various scenes; the epoxy section refers to epoxy resin, which is a high molecular compound prepared by the reaction of an epoxy group with a phenolic resin or an amide resin, which has excellent mechanical properties, chemical resistance and high temperature stability.

[0045] In another embodiment, the rear end surface of the rotating shaft body 11 is provided with a first mounting position, the front end surface of the unit to be sensed 12 is provided with a second mounting position, and the connecting piece 13 is detachably mounted between the rotating shaft body 11 and the unit to be sensed 12 through the first mounting position and the second mounting position.

[0046] The connecting piece 13 in the embodiment is detachably installed between the shaft body 11 and the unit 12 to be sensed based on the first mounting position and the second mounting position, so that the shaft body 11 and the unit 12 to be sensed are in a non-integrated structure. For example, the rear end surface of the shaft body 11 is provided with a first thread as the first mounting position, and the front end surface of the unit 12 to be sensed is provided with a second thread as the second mounting position. Correspondingly, the first connecting position and the second connecting position of the connecting piece are also provided with threads respectively. In this way, when the connecting piece 13 is inserted into the gap between the shaft body 11 and the unit 12 to be sensed, the shaft body 11 and the unit 12 to be sensed can be connected and fixed by screwing respectively. For another example, the rear end surface of the shaft body 11 is provided with a first mounting clamping groove as the first mounting position, and the front end surface of the unit 12 to be sensed is provided with a second mounting clamping groove as the second mounting position. When the connecting piece 13 is inserted into the gap between the shaft body 11 and the unit 12 to be sensed, the shaft body 11 and the unit 12 to be sensed can be connected and fixed by buckling respectively. For another example, the rear end surface of the shaft body 11 is provided with a first bonding position as the first mounting position, and the front end surface of the unit 12 to be sensed is provided with a second bonding position as the second mounting position. When the connecting piece 13 is inserted into the gap between the shaft body 11 and the unit 12 to be sensed, the shaft body 11 and the unit 12 to be sensed can be connected and fixed by bonding respectively.

[0047] In combination Figure 3 In an embodiment, the rear end surface of the shaft body 11 is provided with a second protrusion matched with the first groove, or a second groove matched with the first protrusion.

[0048] In the embodiment, the protrusion or the groove is arranged on the rear end surface of the shaft body 11, and the outer surface of the protrusion or the inner surface of the groove is completely covered by the injection molding material during the injection molding process, so as to achieve the effect of connecting and fixing the shaft body 11 and the plastic segment formed by injection molding.

[0049] Further, the side wall of the second protrusion or the second groove is provided with at least one clamping groove. By arranging the clamping groove, the injection molding material flows into the clamping groove during the injection molding process, so as to further improve the fixing performance of the connecting piece 13 and the shaft body 11, thereby improving the stability of the whole installation component 1. In actual application scenarios, in order to improve the connection stability, multiple clamping grooves can be arranged on the side wall of the second protrusion or the second groove of the shaft body 12, and the depths and widths of the clamping grooves can be different. Of course, structures capable of playing a stabilizing role, such as protrusions of different shapes, etc., can also be arranged on the side of the second protrusion or the second groove.

[0050] In addition, the plastic segment formed by injection molding covers the front end surface and at least part of the side surface of the unit 12 to be sensed.

[0051] The plastic section formed by injection molding covers not only the protrusion 111 of the shaft body 11, but also the front end surface of the to-be-sensed unit 12. In order to ensure the connection and fixing effect, the plastic section formed by injection molding covers part of the side surface of the to-be-sensed unit 12. Of course, in some cases, the plastic section formed by injection molding can completely cover the side surface of the to-be-sensed unit 12, but it is necessary to ensure that the rear end surface of the to-be-sensed unit 12 is not covered, so as to avoid affecting the sensing function of the to-be-sensed unit 12.

[0052] In an embodiment, the to-be-sensed unit 12 includes at least one of a magnetic steel, an optical code disc or an inductive metal block code disc. That is, the rear end of the shaft body 11 is provided with at least one of a magnetic steel, an optical code disc or an inductive metal block code disc. The material of the magnetic steel can be any one of neodymium iron boron, ferrite or samarium cobalt. The optical code disc, i.e. the photoelectric code disc, is made of optical glass and has many concentric code channels engraved thereon, and each code channel has light-transmitting and non-light-transmitting parts arranged in a certain rule. The inductive metal block code disc is a metal code disc with an inductive function.

[0053] The utility model embodiment further provides a motor, including installation component 1 as described above.

[0054] The utility model embodiment further provides an encoder, including installation component 1 as described above.

[0055] The embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same and similar parts of each embodiment can be referred to each other. For the system disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple, and the related parts can be referred to the method part. It should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, the present application can be improved and modified, and these improvements and modifications also fall within the protection scope of the claims of the present application.

[0056] It is further noted that the terminology "first", "second" and the like used in the specification are merely used for differentiating one entity or action from another, and do not necessarily imply any actual physical or logical relationship or order between such entities or actions. Moreover, the use of the term "including", "containing" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or apparatus that comprises a list of elements is not required to comprise only those elements but can include other elements not expressly listed or inherent to such process, method, article or apparatus. An element preceded by "comprises a..." does not, without further constraints, preclude the existence of additional identical elements in the process, method, article or apparatus that comprises the stated element.

Claims

1. A connection, characterized in that The connecting piece is a cylindrical connecting piece, both ends of which are open to form a first connecting position and a second connecting position respectively, wherein the first connecting position is used to connect the rotating shaft body of the motor, and the second connecting position is used to connect the unit to be sensed of the motor.

2. The connection of claim 1, wherein The inner wall of the first connecting position is provided with a plurality of first protrusions and / or first grooves.

3. The connection of claim 1, wherein The second connecting position covers the front end surface and at least part of the side surface of the unit to be sensed.

4. The connection of claim 1, wherein The material of the connecting piece is any one of plastic, epoxy glue or metal.

5. A mounting member characterized by comprising: Comprise: a rotating shaft body; a unit to be sensed arranged at the rear end of the rotating shaft body, used to cooperate with a sensing unit of an encoder to obtain motor position information; wherein the unit to be sensed and the rotating shaft body are integrally formed and connected or detachably connected by the connecting piece according to any one of claims 1-4.

6. The mounting member of claim 5, wherein The rotating shaft body and the unit to be sensed have a gap in the axial direction, for the connecting piece to enter and make the connecting piece contact the rear end surface of the rotating shaft body and the front end surface of the unit to be sensed respectively.

7. The mounting member according to claim 5, employing the connector according to claim 2, characterized in that The rear end surface of the rotating shaft body is provided with second protrusions matched with the first grooves, or second grooves matched with the first protrusions.

8. The mounting member according to any one of claims 5 to 7, characterized by The unit to be sensed comprises at least one of a magnetic steel, an optical code disc or an inductive metal block code disc.

9. An encoder, comprising: Comprise the mounting component according to any one of claims 5-8.

10. An electric machine characterized by Comprise the mounting component according to any one of claims 5-8.

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