Encoder

Abstract

The utility model discloses an encoder, which comprises an outer shaft, the inside of the outer shaft is a hollow space penetrating along the vertical direction, the inside of the outer shaft is provided with an inner rotating shaft, and the inner rotating shaft can rotate and vertically move relative to the outer shaft; an annular groove is formed in the edge of the bottom of the outer shaft, the inner diameter of the annular groove is larger than that of the cylindrical body of the outer shaft, the annular groove is located below the cylindrical body of the outer shaft, a plurality of rubber coating chips are arranged on the inner top face of the annular groove, and the outer circumferential face of the bottom end of the inner rotating shaft is sleeved with a rotating disc. And the rotating disc is rotationally assembled in the annular groove, a plurality of brushes are arranged on the edge of the top of the rotating disc, and in the process that the inner rotating shaft drives the brushes to rotate, the brushes can make contact with or be disengaged from the rubber coating chips correspondingly. According to the utility model, the structural design is reasonable, the rotating shaft is the inner shaft, and the rotating shaft has the function of a push switch besides the rotating function.

Description

Technical Field

[0001] This utility model relates to the field of encoder technology, and in particular to an encoder. Background Technology

[0002] 1. Current technological status:

[0003] A hollow encoder is an encoder with a hollow space (a hollow center) to allow customers to install lighting devices or other pressing functions. Existing hollow encoders all have an outer rotating shaft and do not have a pressing function.

[0004] 2. Technical problem to be solved: Traditional encoders have an external rotating shaft and cannot be equipped with a push-button switch function. Utility Model Content

[0005] The purpose of this invention is to provide an encoder that solves the technical problem that traditional encoders, which have an outer shaft rotation, cannot be equipped with a push-button switch function.

[0006] To achieve the above objectives, the present invention provides an encoder, including an outer shaft, the interior of which is a vertically penetrating hollow space. An inner rotating shaft is provided inside the outer shaft, which can rotate relative to the outer shaft and move vertically. An annular groove is provided at the bottom edge of the outer shaft, the inner diameter of which is larger than the inner diameter of the cylindrical body of the outer shaft. The annular groove is located below the cylindrical body of the outer shaft. Several rubber-coated code pieces are provided on the inner top surface of the annular groove. A rotating disk is fitted onto the outer circumference of the bottom end of the inner rotating shaft. The rotating disk is rotatably assembled in the annular groove. Several brushes are provided on the top edge of the rotating disk. During the rotation of the brushes driven by the inner rotating shaft, the brushes can contact and disengage from the rubber-coated chips respectively. A switch rubber-coated body is provided below the outer shaft. A switch is provided on the switch rubber-coated body. A dome switch is covered on the top of the switch. The center of the dome switch is arched upward. When the inner rotating shaft is pressed down, the bottom end of the inner rotating shaft can press the center of the dome switch so that the dome switch contacts the switch downward.

[0007] Furthermore, the top edge of the rotating disk is provided with a plurality of pillars, which are distributed sequentially along the circumference of the rotating disk; the two ends of the brush are respectively provided with brush claws and round holes, the brush is fitted onto the pillars through the round holes and riveted together, the brush can contact and detach from a plurality of rubber-coated chips through the brush claws, and the brush claws of one brush are adjacent to the round holes of another brush.

[0008] Furthermore, the bottom edge of the inner rotating shaft is provided with a plurality of protrusions, which are distributed sequentially along the circumference of the inner rotating shaft. The bottom edge of the rotating disk is provided with a plurality of second grooves, which are distributed sequentially along the circumference of the rotating disk. The plurality of protrusions are respectively fitted into the plurality of second grooves, so that the inner rotating shaft can drive the rotating disk to rotate together, and the protrusions can move up and down relative to the second grooves.

[0009] Furthermore, the bottom edge of the rotating disk is provided with a plurality of positioning grooves, which are distributed sequentially along the circumference of the rotating disk, and are located outside the plurality of second grooves; a positioning spring is provided below the rotating disk, the middle of the positioning spring is through the top and bottom, the bottom end of the inner rotating shaft passes through the middle of the positioning spring, the edge of the positioning spring is provided with positioning points, the positioning spring is fixedly connected to the bottom edge of the annular groove, and the rotating disk is limited by the upper and lower limits formed by the positioning spring and the annular groove; when the inner rotating shaft rotates, the positioning points can contact and disengage from the plurality of positioning grooves.

[0010] Furthermore, the bottom edge of the annular groove is provided with first positioning posts on both sides, the two ends of the positioning spring are provided with spring hole, and the other two ends of the positioning spring are provided with positioning points. The first positioning posts on both sides pass downward through the spring hole at both ends so that the positioning spring is fixed on the first positioning post of the annular groove. The positioning spring is a metal spring, and the positioning point is a stamped point on the metal spring or a plastic point coated with rubber on the metal spring.

[0011] Furthermore, the bottom edge of the annular groove is provided with a plurality of first positioning holes, and the top edge of the switch body is provided with a plurality of second positioning posts. The switch body is assembled with the first positioning holes of the outer shaft through the second positioning posts. The top edge of the switch body is provided with assembly grooves on both sides, and the assembly grooves on both sides cooperate with the first positioning posts on both sides to fix the holes of the spring pieces at both ends. The outer shaft is made of metal sheet by injection molding and the annular groove of the outer shaft and the switch body are assembled and fixed together by four clips on the bracket.

[0012] Furthermore, the outer wall of the inner rotating shaft is provided with a lower cylindrical surface and an upper cylindrical surface, the upper cylindrical surface being located above the lower cylindrical surface, and the outer diameter of the upper cylindrical surface being smaller than the outer diameter of the lower cylindrical surface. The protrusion is located on the lower cylindrical surface. The lower inner wall of the cylindrical body of the outer shaft is provided with a hole cylindrical surface, and the upper inner wall of the cylindrical body of the outer shaft is provided with several hole protrusions. The upper cylindrical surface is in contact with several hole protrusions, and the lower cylindrical surface is in contact with the hole cylindrical surface, so that the inner rotating shaft can rotate and move up and down within a certain space inside the outer shaft.

[0013] In a preferred embodiment, the switch is located on the top edge of the switch body, and a switch pressing pad is provided between the inner rotating shaft and the switch body. The bottom end face of the inner rotating shaft has a lower end face, and the upper end face of the switch pressing pad is divided into an inner ring and an outer ring by an annular cutting groove. The lower end face of the inner rotating shaft abuts against the inner ring of the upper end face of the switch pressing pad, and the edge of the switch pressing pad is fixedly connected to the switch body. A small protrusion is provided below the inner ring of the upper end face of the switch pressing pad. When the inner rotating shaft presses down on the switch pressing pad, the small protrusion will press the dome switch downwards to contact the switch.

[0014] Furthermore, the edge of the switch pressing pad is provided with several locking positions, and the top edge of the switch encapsulated body is provided with several third grooves. The switch pressing pad is fixed by being fitted into several of the third grooves of the switch encapsulated body through the locking positions. The top edge of the switch encapsulated body is provided with fourth grooves on both sides for mounting the switch, and the dome switch is fixed through the fourth grooves. The inner ring of the upper end face of the switch pressing pad is provided with small protrusions on both sides below the inner ring. The small protrusions on both sides can press on the center of the dome switch on both sides to produce a pressing action.

[0015] In another preferred embodiment, the switch body has a groove for placing a dome switch in the middle, the switch is located at the bottom of the groove, the dome switch is located at the top of the groove, and the bottom end face of the inner rotating shaft has a downward conical protrusion with a pressing point in the middle, which can press the dome switch downward to contact the switch.

[0016] In summary, the technical solution of this utility model has the following beneficial effects: The structure of this utility model is reasonable. (1) It includes an outer shaft, the interior of which is a hollow space that runs vertically through the shaft. The interior of the outer shaft is provided with an inner rotating shaft, which can rotate relative to the outer shaft and move vertically. This provides a new encoder structure, which rotates by rotating the inner shaft and has a push-button switch function, integrating the two functions into one. (2) An annular groove is provided at the bottom edge of the outer shaft. The inner diameter of the annular groove is larger than the inner diameter of the cylindrical body of the outer shaft. The annular groove is located below the cylindrical body of the outer shaft. Several rubber-coated code pieces are provided on the inner top surface of the annular groove. A rotating disk is fitted on the outer circumference of the bottom end of the inner rotating shaft. The rotating disk is mounted in the annular groove. Several brushes are provided on the top edge of the rotating disk. During the rotation of the inner rotating shaft, the brushes can contact and disengage from the rubber-coated code pieces respectively. Thus, during the rotation of the inner rotating shaft, the inner rotating shaft drives the brushes to continuously contact and disengage from the rubber-coated code pieces. At this time, the brushes and the rubber-coated code pieces generate an on / off signal (that is, the on / off signal of the incremental encoder). (3) A switch-coated body is located below the outer shaft, and a switch is mounted on the switch-coated body. A dome switch is covered above the switch, and the center of the dome switch is arched upwards. When the inner rotating shaft is pressed down, the bottom end of the inner rotating shaft can press the center of the dome switch, so that the dome switch contacts the switch downwards. Thus, when the inner rotating shaft is pressed down, the bottom of the inner rotating shaft will press the center of the dome switch, and then the dome switch contacts the switch in the switch-coated body, forming a switch on / off circuit on the switch-coated body. From this analysis, it can be seen that this utility model provides a different kind of encoder, whose rotating shaft is an inner shaft, and the rotating shaft has both a rotation function and a push-button switch function, making it a multi-functional inner shaft rotation and push-button type encoder. Attached Figure Description

[0017] Figure 1 This is an exploded structural diagram of Embodiment 1 of this utility model;

[0018] Figure 2 yes Figure 1 A magnified view of the upper part;

[0019] Figure 3 yes Figure 1 A magnified view of the lower part;

[0020] Figure 4 This is a schematic diagram of the exploded structure when Embodiment 1 of this utility model is inverted;

[0021] Figure 5 yes Figure 4 A magnified view of the upper part;

[0022] Figure 6 yes Figure 4 A magnified view of the lower part;

[0023] Figure 7 This is a cross-sectional structural schematic diagram of Embodiment 1 of this utility model;

[0024] Figure 8 This is an exploded structural diagram of Embodiment 2 of this utility model;

[0025] Figure 9 This is a three-dimensional structural diagram of the switch-coated body according to Embodiment 2 of this utility model;

[0026] Figure 10 This is a schematic diagram of the exploded structure when the present invention is inverted in Embodiment 2;

[0027] Figure 11 This is a cross-sectional structural diagram of Embodiment 2 of this utility model;

[0028] Explanation of reference numerals in the attached drawings: bracket (1), outer shaft (2), brush (3), rotating disk (4), positioning spring (5), inner rotating shaft (6), switch pressing pad (7), dome switch (8), switch body with rubber coating (9); locking foot (11); hardware sheet (21), annular groove (22), hole protrusion (23), rubber-coated clip (24), hole cylindrical surface (25), first positioning post (26), first positioning hole (27); brush claw (31), round hole ( 32); Column (41), second groove (42), positioning groove (43); spring hole (51), positioning point (52); protrusion (61), lower cylindrical surface (62), upper cylindrical surface (63), lower end face (64); upper end face (71), locking position (72), small boss (73); center (81), second positioning post (91), third groove (92), fourth groove (93), switch (94), assembly slot (95). Stamping point (521), plastic point (522), pressing point (65), dome switch placement groove (96). Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model, but this does not constitute a limitation on the scope of protection of the present utility model.

[0030] In this utility model, for clearer description, the following explanation is provided: The observer faces the attached... Figure 1When observing, the observer above is designated as "up" and the observer below as "down." It should be noted that the terms "front end," "rear end," "left side," "right side," "middle," "above," and "below," etc., used in this document to indicate orientation or positional relationships are based on the accompanying drawings and are solely for the purpose of clearly describing this utility model. They do not indicate or imply that the structure or component referred to must have a specific orientation or be constructed in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," and "fourth" are used only for the purpose of clarity or simplification of description and should not be construed as indicating or implying relative importance or quantity.

[0031] See Figures 1 to 11This embodiment provides an encoder, including an outer shaft 2. The interior of the outer shaft 2 is a hollow space extending vertically. An inner rotating shaft 6 is provided inside the outer shaft 2, which can rotate relative to the outer shaft 2 and move vertically. An annular groove 22 is provided on the bottom edge of the outer shaft 2. The inner diameter of the annular groove 22 is larger than the inner diameter of the cylindrical body of the outer shaft 2. The annular groove 22 is located below the cylindrical body of the outer shaft 2. A plurality of rubber-coated code pieces 24 are provided on the inner top surface of the annular groove 22. A rotating disk 4 is fitted on the outer circumference of the bottom end of the inner rotating shaft 6. The rotating disk 4 is rotatably assembled. Inside the annular groove 22, the top edge of the rotating disk 4 is provided with several brushes 3. During the rotation of the brushes 3 driven by the inner rotating shaft 6, the brushes 3 can contact and disengage from the rubber-coated code pieces 24 respectively. The outer shaft 2 is provided with a switch rubber-coated body 9 below it. The switch rubber-coated body 9 is provided with a switch 94. The switch 94 is covered with a dome switch 8. The center 81 of the dome switch 8 is arched upward. When the inner rotating shaft 6 is pressed down, the bottom end of the inner rotating shaft 6 can press the center 81 of the dome switch 8 so that the dome switch 8 contacts the switch 94 downward. Function: (1) By including an outer shaft, the interior of the outer shaft is a hollow space that runs vertically through it. The interior of the outer shaft is provided with an inner rotating shaft, which can rotate relative to the outer shaft and move vertically. This provides a new encoder structure, which rotates by the inner shaft and has a push-button switch function, integrating the two functions into one. (2) An annular groove is provided at the bottom edge of the outer shaft. The inner diameter of the annular groove is larger than the inner diameter of the cylindrical body of the outer shaft. The annular groove is located below the cylindrical body of the outer shaft. Several rubber-coated code pieces are provided on the inner top surface of the annular groove. A rotating disk is fitted on the outer circumference of the bottom end of the inner rotating shaft. The rotating disk is mounted in the annular groove. Several brushes are provided on the top edge of the rotating disk. During the rotation of the inner rotating shaft, the brushes can contact and disengage from the rubber-coated code pieces respectively. Thus, during the rotation of the inner rotating shaft, the inner rotating shaft drives the brushes to continuously contact and disengage from the rubber-coated code pieces. At this time, the brushes and the rubber-coated code pieces generate an on / off signal (that is, the on / off signal of the incremental encoder). (3) A switch-coated body is located below the outer shaft, and a switch is mounted on the switch-coated body. A dome switch is covered above the switch, and the center of the dome switch is arched upwards. When the inner rotating shaft is pressed down, the bottom end of the inner rotating shaft can press the center of the dome switch, so that the dome switch contacts the switch downwards. Thus, when the inner rotating shaft is pressed down, the bottom of the inner rotating shaft will press the center of the dome switch, and then the dome switch contacts the switch in the switch-coated body, forming a switch on / off circuit on the switch-coated body. From this analysis, it can be seen that this utility model provides a different kind of encoder, whose rotating shaft is an inner shaft, and the rotating shaft has both a rotation function and a push-button switch function, making it a multi-functional inner shaft rotation and push-button type encoder.

[0032] Specifically, the top edge of the rotating disk 4 is provided with several pillars 41, which are distributed sequentially along the circumference of the rotating disk 4. Each end of the brush 3 is provided with a brush claw 31 and a circular hole 32. The brush 3 is fitted onto the pillar 41 through the circular hole 32 and riveted together. The brush 3 can contact and detach from several rubber-coated code pieces 24 through the brush claws 31. The brush claw 31 of one brush 3 is adjacent to the circular hole 32 of another brush 3. Function: This arrangement provides good fixing ability for the circular hole 32 of the brush 3, while the brush claws 31 have good contact ability with the rubber-coated code pieces 24. The brush 3 has good elasticity and is evenly and reasonably distributed. The rubber-coated code piece 24 contacts several (e.g., three) brush claws 31 of the brush 3. When the brush claws 31 rotate, they generate an on / off signal with the code piece 24, which is the on / off signal of the incremental encoder. In practice, the brush 3 is fitted onto the column 41 of the rotating disk 5 through its round hole 32 and riveted together, rotating together with the rotating disk 4 and the inner rotating shaft 6. The inner rotating shaft 6, the rotating disk 4, and the brush 3 together constitute the rotating part of the product.

[0033] Specifically, the bottom edge of the inner rotating shaft 6 is provided with several protrusions 61, which are distributed sequentially along the circumference of the inner rotating shaft 6. The bottom edge of the rotating disk 4 is provided with several second grooves 42, which are distributed sequentially along the circumference of the rotating disk 4. The protrusions 61 are respectively fitted into the second grooves 42, so that the inner rotating shaft 6 can drive the rotating disk 4 to rotate together, and the protrusions 61 can move up and down relative to the second grooves 42. Function: The inner rotating shaft 6 is a rotating shaft with a pressing function. It is fitted into the second grooves 42 of the rotating disk 4 through the protrusions 61. When the inner rotating shaft rotates, it will drive the rotating disk 4 to rotate together. When the inner rotating shaft is pressed down, the protrusions 61 can move downward relative to the second grooves 42, while the rotating disk 4 can remain stationary in the up and down direction, thereby realizing the pressing and rotating functions of the inner rotating shaft at the same time.

[0034] Specifically, the bottom edge of the rotating disk 4 is provided with a number of positioning grooves 43, which are distributed sequentially along the circumference of the rotating disk 4. The positioning grooves 43 are located outside the number of second grooves 42. A positioning spring piece 5 is provided below the rotating disk 4. The middle part of the positioning spring piece 5 is vertically continuous. The bottom end of the inner rotating shaft 6 passes through the middle part of the positioning spring piece 5. The edge of the positioning spring piece 5 is provided with positioning points 52. The positioning spring piece 5 is fixedly connected to the bottom edge of the annular groove 22. The rotating disk 4 is limited by the upper and lower limits formed by the positioning spring piece 5 and the annular groove 22. When the inner rotating shaft 6 rotates, the positioning points 52 can contact and disengage from the positioning grooves 43. Function: The positioning point 52 continuously contacts and disengages from the positioning groove 43 on the rotating disk 4, creating a tactile feel of positioning at each step during rotation; moreover, the rotating disk 4 and the positioning spring 5 remain relatively stationary in the vertical direction, which also facilitates the rotation and pressing function of the inner rotating shaft 6. The inner rotating shaft 6 passes through the middle of the positioning spring 5 and presses against the dome switch 8 (or indirectly presses against the dome switch 8 through the switch pressing pad 7 mentioned below).

[0035] Specifically, the bottom edge of the annular groove 22 has two first positioning posts 26 on each side. The two ends of the positioning spring 5 have spring holes 51, and the other two ends have positioning points 52. The first positioning posts 26 on both sides pass downwards through the spring holes 51 at both ends, so that the positioning spring 5 is fixed on the first positioning posts 26 of the annular groove 22. The positioning spring 5 is a metal spring, and the positioning points 52 are either stamped points 521 on the metal spring or plastic points 522 coated with rubber on the metal spring. Function: The positioning spring 5 is fixed to the first positioning post 26 of the outer shaft 2 through its spring holes 51 (i.e., positioning holes), thus fixing the positioning spring 5. The two positioning points 52 provide a better tactile feel during rotation. The stamped points 521 and plastic points 522 can be selected according to actual needs and are not restricted here.

[0036] Specifically, the bottom edge of the annular groove 22 is provided with several first positioning holes 27, and the top edge of the switch-coated body 9 is provided with several second positioning posts 91. The switch-coated body 9 is assembled with the first positioning holes 27 of the outer shaft 2 through the second positioning posts 91. Assembly grooves 95 are provided on both sides of the top edge of the switch-coated body 9. The assembly grooves 95 on both sides cooperate with the first positioning posts 26 on both sides to fix the holes 51 of the spring pieces at both ends. The outer shaft 2 is formed by injection molding of a metal sheet 21. The annular groove 22 of the outer shaft 2 and the switch-coated body 9 are assembled and fixed together through four locking feet 11 on the bracket 1. Function: The first positioning posts 26 are used to fit into the holes 51 of the positioning spring pieces 5. The first positioning holes 27 are assembled with the second positioning posts 91, and the four locking feet 11 on the bracket 1 are used to fix the outer shaft 2, the switch-coated body 9, and the positioning spring pieces 5 together.

[0037] Specifically, the outer wall of the inner rotating shaft 6 has a lower cylindrical surface 62 and an upper cylindrical surface 63. The upper cylindrical surface 63 is located above the lower cylindrical surface 62, and the outer diameter of the upper cylindrical surface 63 is smaller than the outer diameter of the lower cylindrical surface 62. The protrusion 61 is located on the lower cylindrical surface 62. The lower inner wall of the cylindrical body of the outer shaft 2 has a perforated cylindrical surface 25, and the upper inner wall of the cylindrical body of the outer shaft 2 has several perforated ribs 23. The upper cylindrical surface 63 is in contact with the perforated ribs 23, and the lower cylindrical surface 62 is in contact with the perforated cylindrical surface 25, allowing the inner rotating shaft 6 to rotate and move up and down within a certain space inside the outer shaft 2. Function: The perforated ribs 23 are used to fit into the upper cylindrical surface 63 of the inner rotating shaft 6, and the perforated cylindrical surface 25 is used to fit into the lower cylindrical surface 62 of the inner rotating shaft 6. The inner rotating shaft 6 passes through the upper cylindrical surface 63 and the lower cylindrical surface 62 into the interior of the cylindrical body of the outer shaft 2, respectively cooperating with the hole protrusion 23 and the hole cylindrical surface 25, so that the inner rotating shaft 6 can rotate and move up and down within a certain space (pressing space) in the hole.

[0038] In Example 1, a switch 94 is provided on the top edge of the switch body 9. A switch pressing pad 7 is provided between the inner rotating shaft 6 and the switch body 9. The bottom end face of the inner rotating shaft 6 is provided with a lower end face 64. The upper end face 71 of the switch pressing pad 7 is divided into an inner ring and an outer ring by an annular cutting groove. The lower end face 64 of the inner rotating shaft 6 abuts against the inner ring of the upper end face 71 of the switch pressing pad 7. The edge of the switch pressing pad 7 is fixedly connected to the switch body 9. A small protrusion 73 is provided below the inner ring of the upper end face 71 of the switch pressing pad 7. When the inner rotating shaft 6 presses down on the switch pressing pad 7, the small protrusion 73 will press the dome switch 8 down to contact the switch 94. Function: The annular cutting groove allows the inner ring to press down, while the outer ring serves as a fixed part. The inner rotating shaft 6 presses against the inner ring of the upper end face 71 of the switch pressing pad 7 via its lower end face 64 (achieving upward support of the inner rotating shaft 6 by the switch pressing pad 7). The inner rotating shaft presses against the center 81 of the dome switch 8 via the small protrusion 73 on the switch pressing pad 7, generating a pressing action. When the inner rotating shaft 6 presses down, it pushes the dome switch 8 downward to contact the switch 94 in the switch body 9, forming a switch on / off circuit on the switch body 9. The inner rotating shaft 6, the switch pressing pad 7, and the dome switch 8 together constitute the pressing part of the product. Preferably, the interior of the inner rotating shaft 6, the switch pressing pad 7, and the switch body 9 is a hollow space that runs vertically through the body, with the middle of the switch body 9 passing through the middle of the switch pressing pad 7 and the middle of the inner rotating shaft 6 sequentially.

[0039] Specifically, the edge of the switch pressing pad 7 is provided with several locking positions 72, and the top edge of the switch encapsulated body 9 is provided with several third grooves 92. The switch pressing pad 7 is fixed by being fitted into several third grooves 92 of the switch encapsulated body 9 through several locking positions 72. The top edge of the switch encapsulated body 9 is provided with fourth grooves 93 on both sides, and the dome switch 8 is fixed by the fourth grooves 93. The inner ring of the upper end face 71 of the switch pressing pad 7 is provided with small protrusions 73 on both sides below. The small protrusions 73 on both sides can press on the center 81 of the dome switch 8 on both sides to produce a pressing action. Function: The dome switch 8 is fixed by the fourth groove 93 on the switch body 9, and the switch pressing pad 7 is fixed by fitting into the third groove 92 of the switch body 9 through the locking position 72 (since the top of the switch body 9 is an annular groove 22, the bottom edge of the annular groove 22 limits the locking position 72 of the third groove 92), thereby realizing the assembly and fixation of the switch pressing pad 7 and the dome switch 8 on the switch body 9; and the setting of the two small protrusions 73, the dome switch 8, and the switch 94 can better realize the formation of a switch on / off circuit on the switch body 9.

[0040] In Example 2, the switch body 9 has a dome slot 96 in the middle, the switch 94 is located at the bottom of the dome slot 96, and the dome 8 is located at the top of the dome slot 96. The bottom end face of the inner shaft 6 has a downwardly conical pressing point 65 in the middle, which can press the dome 8 downwards to contact the switch 94. Function: The dome slot structure in the center provides a more uniform and consistent pressing feel. Preferably, the interior of the inner shaft 6 is a hollow space that extends upwards and is closed at the bottom.

[0041] This utility model product is a novel encoder (i.e., a hollow encoder with an inner shaft rotation and a pressing function), realizing an inner rotating shaft and a pressing function. Similar hollow potentiometers and switches with inner rotation and pressing functions also fall within the same scope of this technology. Traditional hollow encoders have an outer shaft that rotates while the inner shaft is fixed, creating a hollow space; while this novel encoder has an inner shaft that rotates and presses, while the outer shaft is fixed, creating a hollow space.

[0042] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.

Claims

1. An encoder comprising an outer shaft (2), characterized in that: The outer shaft (2) has a hollow space running vertically through it. An inner rotating shaft (6) is located inside the outer shaft (2), allowing it to rotate relative to the outer shaft (2) and move vertically. An annular groove (22) is located at the bottom edge of the outer shaft (2). The inner diameter of the annular groove (22) is larger than the inner diameter of the cylindrical body of the outer shaft (2). The annular groove (22) is located below the cylindrical body of the outer shaft (2). Several rubber-coated clips (24) are located on the inner top surface of the annular groove (22). A rotating disk (4) is fitted onto the outer circumference of the bottom end of the inner rotating shaft (6). The rotating disk (4) is rotatably mounted within the annular groove (22). The top edge of the disc (4) is provided with several brushes (3). During the rotation of the brushes (3) driven by the inner rotating shaft (6), the brushes (3) can contact and detach from the rubber-coated chips (24) respectively. The outer shaft (2) is provided with a switch rubber-coated body (9) below it. The switch rubber-coated body (9) is provided with a switch (94). The switch (94) is covered with a dome switch (8). The center (81) of the dome switch (8) is arched upward. When the inner rotating shaft (6) is pressed down, the bottom end of the inner rotating shaft (6) can press the center (81) of the dome switch (8) so that the dome switch (8) contacts the switch (94) downward.

2. The encoder according to claim 1, characterized in that: The top edge of the rotating disk (4) is provided with several pillars (41), and the several pillars (41) are distributed sequentially along the circumference of the rotating disk (4); the two ends of the brush (3) are respectively provided with brush claws (31) and round holes (32). The brush (3) is fitted onto the pillars (41) through the round holes (32) and riveted together. The brush (3) can contact and detach from several rubber-coated chips (24) through the brush claws (31). The brush claws (31) of one brush (3) are adjacent to the round holes (32) of another brush (3).

3. The encoder according to claim 1, characterized in that: The bottom edge of the inner rotating shaft (6) is provided with a plurality of protrusions (61), which are distributed sequentially along the circumferential direction of the inner rotating shaft (6). The bottom edge of the rotating disk (4) is provided with a plurality of second grooves (42), which are distributed sequentially along the circumferential direction of the rotating disk (4). The plurality of protrusions (61) are respectively inserted into the plurality of second grooves (42) so that the inner rotating shaft (6) can drive the rotating disk (4) to rotate together, and the protrusions (61) can move up and down relative to the second grooves (42).

4. The encoder according to claim 3, characterized in that: The bottom edge of the rotating disk (4) is provided with a plurality of positioning grooves (43), which are distributed sequentially along the circumference of the rotating disk (4). The plurality of positioning grooves (43) are located outside the plurality of second grooves (42). A positioning spring (5) is provided below the rotating disk (4). The middle part of the positioning spring (5) is vertically continuous. The bottom end of the inner rotating shaft (6) passes through the middle part of the positioning spring (5). The edge of the positioning spring (5) is provided with positioning points (52). The positioning spring (5) is fixedly connected to the bottom edge of the annular groove (22). The rotating disk (4) is limited vertically by the positioning spring (5) and the annular groove (22). When the inner rotating shaft (6) rotates, the positioning points (52) can contact and disengage from the plurality of positioning grooves (43).

5. An encoder according to claim 4, characterized in that: The bottom edge of the annular groove (22) is provided with first positioning posts (26) on both sides. The two ends of the positioning spring (5) are provided with spring hole (51) and the other two ends of the positioning spring (5) are provided with positioning points (52). The first positioning posts (26) on both sides pass downward through the spring hole (51) at both ends so that the positioning spring (5) is fixed on the first positioning post (26) of the annular groove (22). The positioning spring (5) is a metal spring and the positioning point (52) is a stamped point (521) on the metal spring or a plastic point (522) coated with rubber on the metal spring.

6. The encoder according to claim 5, characterized in that: The bottom edge of the annular groove (22) is provided with several first positioning holes (27), and the top edge of the switch body (9) is provided with several second positioning posts (91). The switch body (9) is assembled with the first positioning holes (27) of the outer shaft (2) through the second positioning posts (91). The top edge of the switch body (9) is provided with assembly grooves (95) on both sides. The assembly grooves (95) on both sides cooperate with the first positioning posts (26) on both sides to fix the holes (51) of the spring pieces at both ends. The outer shaft (2) is made of metal sheet (21) by injection molding. The annular groove (22) of the outer shaft (2) and the switch body (9) are assembled and fixed together by four clips (11) on the bracket (1).

7. An encoder according to any one of claims 3 to 6, characterized in that: The outer wall of the inner rotating shaft (6) is provided with a lower cylindrical surface (62) and an upper cylindrical surface (63). The upper cylindrical surface (63) is located above the lower cylindrical surface (62). The outer diameter of the upper cylindrical surface (63) is smaller than the outer diameter of the lower cylindrical surface (62). The protrusion (61) is located on the lower cylindrical surface (62). The lower inner wall of the cylindrical body of the outer shaft (2) is provided with a hole cylindrical surface (25). The upper inner wall of the cylindrical body of the outer shaft (2) is provided with several hole protrusions (23). The upper cylindrical surface (63) is in contact with several hole protrusions (23). The lower cylindrical surface (62) is in contact with the hole cylindrical surface (25), so that the inner rotating shaft (6) can rotate and move up and down within a certain space inside the outer shaft (2).

8. An encoder according to any one of claims 1 to 6, characterized in that: The top edge of the switch body (9) is provided with the switch (94). A switch pressing pad (7) is provided between the inner rotating shaft (6) and the switch body (9). The bottom end face of the inner rotating shaft (6) is provided with a lower end face (64). The upper end face (71) of the switch pressing pad (7) is divided into an inner ring and an outer ring by an annular cutting groove. The lower end face (64) of the inner rotating shaft (6) abuts against the inner ring of the upper end face (71) of the switch pressing pad (7). The edge of the switch pressing pad (7) is fixedly connected to the switch body (9). A small boss (73) is provided below the inner ring of the upper end face (71) of the switch pressing pad (7). When the inner rotating shaft (6) presses down on the switch pressing pad (7), the small boss (73) will press the dome switch (8) down to contact the switch (94).

9. An encoder according to claim 8, characterized in that: The edge of the switch pressing pad (7) is provided with several locking positions (72), and the top edge of the switch body (9) is provided with several third grooves (92). The switch pressing pad (7) is fixed by being fitted into several third grooves (92) of the switch body (9) through several locking positions (72). The top edge of the switch body (9) is provided with fourth grooves (93) on both sides for mounting the switch (94). The dome switch (8) is fixed by the fourth grooves (93). The inner ring of the upper end face (71) of the switch pressing pad (7) is provided with small protrusions (73) on both sides. The small protrusions (73) on both sides can press on the center (81) of the dome switch (8) on both sides to produce a pressing action.

10. An encoder according to any one of claims 1 to 6, characterized in that: The switch body (9) has a dome slot (96) in the middle. The switch (94) is located at the bottom of the dome slot (96). The dome slot (8) is located at the top of the dome slot (96). The bottom end face of the inner rotating shaft (6) has a downward conical protrusion with a pressing point (65). The pressing point (65) can press the dome slot (8) downward to contact the switch (94).

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