Rotary encoder

Abstract

The utility model relates to the technical field of encoders, and particularly discloses a rotary encoder, comprising a rotor, the circumferential surface of which is provided with a plurality of clamping grooves; the code disc base is provided with a rotating groove for accommodating the rotor, and the side surface of the rotating groove is provided with an interference mounting groove and a gap mounting groove; the positioning elastic sheet is mounted in the interference mounting groove in an interference fit manner, and is elastically propped against the circumferential surface of the rotor; and the sound production elastic sheet is installed in the gap installation groove in a clearance fit manner and elastically abuts against the circumferential surface of the rotor. The rotary encoder provided by the utility model not only can effectively solve the problem that the existing rotary encoder cannot give consideration to the two advantages of large sound and small clearance, but also is beneficial to the manufacture of large-size encoders due to the hollow structural design.

Description

Technical Field

[0001] The utility model relates to the technical field of encoders, in particular to a rotary encoder. Background Art

[0002] The rotary encoder generally includes a code disc base and a rotor rotatably mounted on the code disc base. In order to enhance the user's feeling when twisting the rotor, a plurality of slots are arranged in the circumferential direction of the rotor, and a spring sheet abutting against the slots is arranged on the code disc base.

[0003] When the rotor is rotated, the shrapnel is inserted into different slots in turn as the rotor slides, which not only provides the user with a click feeling, but also makes a clicking sound, providing rotation prompts from the sense of touch and hearing respectively.

[0004] It should be noted that when the spring piece is installed and fixed more firmly (the spring piece cannot shake relative to the base of the code disc), the spring piece can firmly hold the card slot, thereby preventing the rotor from rotating in a virtual position; however, since the spring piece cannot shake relative to the base of the code disc, the sound made by the spring piece when it hits the rotor is relatively small;

[0005] On the contrary, when the spring piece is installed loosely (the spring piece can shake slightly relative to the code disc base to a certain extent), the spring piece can shake relative to the code disc base, so the sound it makes when hitting the rotor is louder; however, the spring piece will shake itself, so the rotor that abuts against the spring piece will also have a certain rotational virtual position.

[0006] Therefore, it is necessary to improve the existing encoder to solve the problem that it cannot take into account both the advantages of louder sound and smaller virtual position.

[0007] The above information disclosed in this Background section is included only for enhancement of understanding of the background of the present disclosure and therefore it may contain information that does not form the prior art that is currently known to a person of ordinary skill in the art. Utility Model Content

[0008] One purpose of the utility model is to provide a rotary encoder, which can effectively solve the problem that the existing rotary encoder cannot have both the advantages of loud noise and small virtual position.

[0009] In order to achieve the above purpose, the utility model provides a rotary encoder, comprising:

[0010] A rotor, wherein a plurality of slots are provided on the circumferential surface of the rotor;

[0011] A code disc base, wherein the code disc base is provided with a rotation groove for accommodating the rotor, and the side positions of the rotation groove are provided with an interference mounting groove and a clearance mounting groove;

[0012] A positioning spring piece, which is installed in the interference installation groove by interference fit and elastically abuts against the circumferential surface of the rotor;

[0013] A sound-generating spring piece is installed in the gap installation groove with a clearance fit and elastically abuts against the circumferential surface of the rotor.

[0014] Optionally, the positioning spring piece and the sound-generating spring piece have the same shape and size.

[0015] Optionally, a size of the interference mounting groove is smaller than a size of the clearance mounting groove.

[0016] Optionally, the positioning spring piece and the sound-generating spring piece each include two straight portions and an arc-shaped portion connecting the two straight portions;

[0017] The arc-shaped portion protrudes toward the rotor and abuts against the circumferential surface of the rotor.

[0018] Optionally, both the interference mounting groove and the clearance mounting groove are provided with a spring chip notch connected to the rotation groove.

[0019] Optionally, the positioning spring piece and the sound-generating spring piece are symmetrically arranged with respect to the rotor.

[0020] Optionally, a disc is provided at the bottom of the rotating groove, and a plurality of brushes for elastically abutting against the disc are provided at the bottom of the rotor.

[0021] Optionally, the bottom of the disc is connected with a pin which passes downward through the code disc base.

[0022] Optionally, both the rotor and the code disc base are hollow annular structures.

[0023] Optionally, also include:

[0024] The annular cover plate comprises a cover plate body located above the rotor, and rivet feet connected to the edge of the cover plate body and riveted to the code disc base.

[0025] The beneficial effects of the utility model are: providing a rotary encoder, when the rotor is rotated: on the one hand, the positioning spring piece is installed in the interference installation groove due to interference fit, and will not shake relative to the code disk base, so that the slot on the rotor can be elastically clamped to avoid the rotor from rotating in a virtual position; on the other hand, the sounding spring piece is installed in the clearance installation groove due to clearance fit, and will shake to a certain extent relative to the code disk base, so that a loud clicking sound can be emitted.

[0026] Therefore, the rotary encoder provided by the utility model can effectively solve the problem that the existing rotary encoder cannot have both the advantages of loud noise and small virtual position. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] 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 these drawings without paying creative labor.

[0028] Figure 1 A schematic diagram of the structure of a rotary encoder provided in an embodiment;

[0029] Figure 2 An exploded schematic diagram of a rotary encoder provided in an embodiment;

[0030] Figure 3 A schematic diagram of the top of a code disc base provided in an embodiment;

[0031] Figure 4 A bottom schematic diagram of a rotor provided in an embodiment.

[0032] In the figure:

[0033] 1. rotor; 101. slot; 102. brush; 1021. bract;

[0034] 2. Code disk base; 201. Rotation slot; 202. Interference installation slot; 203. Clearance installation slot; 204. Disc; 205. Pin; 206. Shrapnel notch;

[0035] 3. annular cover plate; 301. cover plate body; 302. rivet foot;

[0036] 4a, sound-generating spring; 4b, positioning spring; 401, straight portion; 402, arc-shaped portion. DETAILED DESCRIPTION

[0037] The reference to "embodiment" in the present invention means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present invention. The word "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or association with other embodiments. In principle, in the present invention, as long as there is no technical contradiction or conflict, the various technical features mentioned in each embodiment can be combined in any way to form a corresponding implementable technical solution.

[0038] Unless otherwise defined, the technical terms used in this document have the same meanings as those generally understood by those skilled in the art to which the present invention belongs; the use of relevant terms in this document is only for describing specific embodiments and is not intended to limit the present invention.

[0039] In the description of the present invention, the term "and / or" is an expression used to describe the logical relationship between objects, indicating that three relationships may exist, for example, A and / or B, which means: A exists, B exists, and A and B exist at the same time. In addition, the character " / " in this article generally indicates that the objects before and after are in a logical relationship of "or".

[0040] In the present invention, terms such as “first” and “second” are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship of quantity, priority or sequence between these entities or operations.

[0041] Without further restrictions, in the present invention, the words "include", "comprises", "has" or other similar expressions used in sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those limited elements, but also other elements not explicitly listed, or also include elements inherent to such process, method or product.

[0042] Similar to the understanding in the Examination Guidelines, in the present invention, expressions such as "greater than", "less than", "exceed" and the like are understood to exclude the number itself; expressions such as "above", "below", "within" and the like are understood to include the number itself. In addition, in the description of the embodiments of the present invention, "multiple" means more than two (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups", "multiple times", etc., unless otherwise clearly and specifically limited.

[0043] In the description of the embodiments of the present invention, the space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present invention or facilitating the reader's understanding, and do not indicate or imply that the referred device or component must have a specific position, a specific orientation, or be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0044] Unless otherwise expressly specified or limited, in the description of the embodiments of the present utility model, the terms "install", "connect", "connect", "fix", "set" and the like used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated setting; it can be a mechanical connection, an electrical connection, or a communication 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. For those skilled in the technical field of the present utility model, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to the specific circumstances.

[0045] See also Figure 1 and Figure 2 The utility model provides a rotary encoder, including a rotor 1, a code disc base 2, an annular cover plate 3, a positioning spring piece 4b, and a sounding spring piece 4a.

[0046] Both the rotor 1 and the code disc base 2 are hollow annular structures. Furthermore, the circumferential surface of the rotor 1 is provided with a plurality of slots 101; the code disc base 2 is provided with a rotation slot 201 for accommodating the rotor 1, and the side position of the rotation slot 201 is provided with an interference mounting slot 202 and a clearance mounting slot 203. The annular cover plate 3 includes a cover plate body 301 located above the rotor 1, and a rivet foot 302 connected to the edge position of the cover plate body 301 and riveted to the code disc base 2. After the rotor 1 is placed in the rotation slot 201, the annular cover plate 3 is covered, and the rivet foot 302 is bent and riveted, so that the rotor 1 can be confined in the rotation slot 201 to prevent the rotor 1 from escaping from the rotation slot 201.

[0047] See also Figure 3 The bottom of the rotating tank 201 is provided with a disk 204, see Figure 4 , a plurality of brushes 102 for elastically abutting against the disc 204 are provided at the bottom of the rotor 1. The bottom of the disc 204 is connected with a pin 205 which passes downward through the code disc base 2. When the rotor 1 is rotated, the rotor 1 can drive the brush 102 to slide on the disc 204, and then detect the changed electrical signal at the pin 205. It should be noted that the cooperation between the brush 102 and the disc 204 to generate the changed electrical signal is not the focus of the utility model, so it will not be described in detail. Optionally, the brush 102 is provided with a bud point 1021 protruding toward the disc 204, so as to reduce the friction resistance between the disc 204 and improve the smoothness of rotation.

[0048] The positioning spring piece 4b is installed in the interference installation groove 202 with interference fit, and elastically abuts against the circumferential surface of the rotor 1; the sounding spring piece 4a is installed in the clearance installation groove 203 with clearance fit, and elastically abuts against the circumferential surface of the rotor 1.

[0049] The rotary encoder provided in this embodiment rotates the rotor 1: on the one hand, the positioning spring piece 4b is installed in the interference installation groove 202 with an interference fit, and will not shake relative to the code disc base 2. Therefore, it can elastically clamp the slot 101 on the rotor 1 to prevent the rotor 1 from rotating in a virtual position; on the other hand, the sounding spring piece 4a is installed in the clearance installation groove 203 with a clearance fit, and will shake to a certain extent relative to the code disc base 2. Therefore, a loud clicking sound can be emitted.

[0050] Therefore, the rotary encoder provided by the utility model can effectively solve the problem that the existing rotary encoder cannot have both the advantages of loud noise and small virtual position.

[0051] In this embodiment, the positioning spring piece 4 b and the sounding spring piece 4 a have the same shape and size, and the size of the interference installation groove 202 is smaller than the size of the clearance installation groove 203 .

[0052] The positioning spring piece 4b and the sounding spring piece 4a have the same shape and size, which can reduce the types of materials and reduce the material management cost. Optionally, the length dimension of the interference installation groove 202 is smaller than the length dimension of the gap installation groove 203, and / or the width dimension of the interference installation groove 202 is smaller than the width dimension of the gap installation groove 203.

[0053] The size of the interference installation groove 202 is designed to be slightly smaller than the size of the clearance installation groove 203 , so that the positioning spring piece 4 b can be installed in the interference installation groove 202 with an interference fit, and the sounding spring piece 4 a can be installed in the clearance installation groove 203 with a clearance fit.

[0054] Optionally, the positioning spring piece 4b and the sounding spring piece 4a each include two straight portions 401 and an arc portion 402 connecting the two straight portions 401 ; wherein the arc portion 402 protrudes toward the rotor 1 and abuts against the circumferential surface of the rotor 1 .

[0055] Correspondingly, both the interference installation groove 202 and the clearance installation groove 203 are provided with a spring notch 206 connected to the rotation groove 201. The arc portion 402 of the positioning spring piece 4b protrudes through the spring notch 206 of the interference installation groove 202 to elastically abut against the rotor 1, and the arc portion 402 of the sounding spring piece 4a protrudes through the spring notch 206 of the clearance installation groove 203 to elastically abut against the rotor 1.

[0056] In this embodiment, the positioning spring piece 4b and the sound-generating spring piece 4a are symmetrically arranged with respect to the rotor 1 to ensure that the left and right sides of the rotor 1 are evenly subjected to elastic force as much as possible.

[0057] In summary, the rotary encoder provided in this embodiment has the following advantages:

[0058] ① The positioning spring piece 4b is installed in the interference installation groove 202 with an interference fit, and can elastically clamp the slot 101 on the rotor 1 to prevent the rotor 1 from rotating in a virtual position; the sound-generating spring piece 4a is installed in the clearance installation groove 203 with a clearance fit, and can shake to a certain extent relative to the code disc base 2, and then make a loud clicking sound when hitting the rotor 1; thereby, both the advantages of louder sound and smaller virtual position can be taken into account;

[0059] ②The hollow structure design is conducive to the production of large-sized encoders.

[0060] Finally, it should be noted that although the above embodiments have been described in the specification and drawings of this application, this does not limit the scope of patent protection of this application. All technical solutions generated by replacing or modifying equivalent structures or equivalent processes based on the essential concept of this application using the contents recorded in the specification and drawings of this application, as well as directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are included in the scope of patent protection of this application.

Claims

1. A rotary encoder, characterized in that: include: A rotor (1), wherein a circumferential surface of the rotor (1) is provided with a plurality of slots (101); A code disc base (2), the code disc base (2) being provided with a rotation groove (201) for accommodating the rotor (1), and an interference mounting groove (202) and a clearance mounting groove (203) being provided on the side of the rotation groove (201); A positioning spring piece (4b), the positioning spring piece (4b) being installed in the interference installation groove (202) by interference fit, and elastically abutting against the circumferential surface of the rotor (1); A sound-generating spring piece (4a), the sound-generating spring piece (4a) is installed in the gap installation groove (203) with a clearance fit, and elastically abuts against the circumferential surface of the rotor (1).

2. The rotary encoder according to claim 1, characterized in that: The positioning spring piece (4b) and the sound-generating spring piece (4a) have the same shape and size.

3. The rotary encoder according to claim 2, characterized in that: The size of the interference installation groove (202) is smaller than the size of the clearance installation groove (203).

4. The rotary encoder according to claim 2, characterized in that: The positioning spring piece (4b) and the sound-generating spring piece (4a) both comprise two straight portions (401) and an arc-shaped portion (402) connecting the two straight portions (401); The arc-shaped portion (402) protrudes toward the rotor (1) and abuts against a circumferential surface of the rotor (1).

5. The rotary encoder according to claim 1, characterized in that: Both the interference installation groove (202) and the clearance installation groove (203) are provided with a spring notch (206) connected to the rotation groove (201).

6. The rotary encoder according to claim 1, characterized in that: The positioning spring piece (4b) and the sound-generating spring piece (4a) are symmetrically arranged with respect to the rotor (1).

7. The rotary encoder according to claim 1, characterized in that: A disc (204) is provided at the bottom of the rotating groove (201), and a plurality of brushes (102) for elastically abutting against the disc (204) are provided at the bottom of the rotor (1).

8. The rotary encoder according to claim 7, characterized in that: The bottom of the disc (204) is connected to a pin (205) that passes downward through the code disc base (2).

9. The rotary encoder according to claim 1, characterized in that: Both the rotor (1) and the code disc base (2) are hollow annular structures.

10. The rotary encoder according to claim 9, characterized in that: Also includes: An annular cover plate (3), the annular cover plate (3) comprising a cover plate body (301) located above the rotor (1), and a rivet foot (302) connected to an edge of the cover plate body (301) and riveted to the code disc base (2).

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