Hollow encoder

Abstract

The invention discloses a hollow encoder, which comprises an outer shaft, the interior of the outer shaft is a hollow space which is through along the vertical direction, the interior of the outer shaft is provided with an inner rotating shaft, the interior of the inner rotating shaft is a hollow space which is through along the vertical direction, and the inner rotating shaft can rotate and vertically move relative to the outer shaft; a rubber coating chip is arranged on the edge of the bottom of the outer shaft, a brush is arranged on the edge of the bottom of the inner rotating shaft, and in the process that the inner rotating shaft drives the brush to rotate, the brush can make contact with or be disengaged from the rubber coating chip; a switch rubber coating body is arranged below the outer shaft, the interior of the switch rubber coating body is a hollow space which is through in the vertical direction, a switch is arranged on the edge of the top of the switch rubber coating body, and a metal dome covers the upper portion of the switch. The hollow encoder is reasonable in structural design, the rotating shaft of the hollow encoder is the inner shaft, the rotating shaft has the function of a push switch besides the rotating function, and the hollow encoder has multiple functions and is of an inner shaft rotating and push type.

Description

Technical Field

[0001] The present invention relates to the technical field of encoders, and in particular to a hollow encoder. Background Art

[0002] 1. Existing technology:

[0003] A hollow encoder is an encoder with a hollow space (hollow in the center), which is used to leave a hollow space for customers to install light-emitting devices or other pressing function devices. Existing hollow encoders all have external shaft rotation and no pressing function.

[0004] 2. Technical problems to be solved: Traditional hollow encoders have external shaft rotation and cannot be equipped with a push switch function. Summary of the invention

[0005] The purpose of the present invention is to provide a hollow encoder to solve the technical problem that the traditional hollow encoder has an external shaft rotation and cannot be equipped with a push switch function.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the present invention provides a hollow encoder, including an outer shaft, the interior of the outer shaft is a hollow space that penetrates vertically, the interior of the outer shaft is provided with an inner rotating shaft, the interior of the inner rotating shaft is a hollow space that penetrates vertically, and the inner rotating shaft can rotate and move vertically relative to the outer shaft; a rubber-coated code sheet is provided at the bottom edge of the outer shaft, and a brush is provided at the bottom edge of the inner rotating shaft, and in the process of the inner rotating shaft driving the brush to rotate, the brush can contact and disengage from the rubber-coated code sheet; a switch rubber-coated body is provided below the outer shaft, the interior of the switch rubber-coated body is a hollow space that penetrates vertically, a switch is provided at the top edge of the switch rubber-coated body, and a pot piece is covered above the switch, the center of the pot piece is arched upward, and when the inner rotating shaft is pressed downward, the bottom of the inner rotating shaft can press the center of the pot piece so that the pot piece contacts the switch downward.

[0007] Furthermore, an annular groove is provided on 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, and a plurality of the rubber-coated code sheets are arranged in the annular groove; a rotating disk is sleeved on the bottom edge of the inner rotating shaft, and the rotating disk is rotatably assembled in the annular groove, and a plurality of the brushes are provided on the top edge of the rotating disk, and the plurality of the brushes can respectively contact and disengage with a plurality of the rubber-coated code sheets.

[0008] Furthermore, a plurality of pillars are provided on the top edge of the rotating disk, and the plurality of pillars are sequentially distributed along the circumferential direction of the rotating disk; brush claws and circular holes are provided at both ends of the brush, and the brush is inserted into the pillars through the circular holes and riveted together; the brush can contact and disengage with a plurality of the rubber-coated code sheets through the brush claws, and the brush claw of one brush is adjacent to the circular hole of another brush.

[0009] Furthermore, the bottom edge of the inner rotating shaft is provided with a plurality of protrusions, and the plurality of protrusions are distributed in sequence along the circumferential direction of the inner rotating shaft; the bottom edge of the rotating disk is provided with a plurality of second grooves, and the plurality of second grooves are distributed in sequence along the circumferential direction of the rotating disk; the plurality of protrusions are respectively inserted upward into the plurality of second grooves, so that the inner rotating shaft can drive the rotating disk to rotate together.

[0010] Furthermore, a plurality of positioning grooves are provided on the bottom edge of the rotating disk, and the plurality of positioning grooves are distributed in sequence along the circumferential direction of the rotating disk, and a plurality of the positioning grooves are located on the outside of a plurality of the second grooves; a positioning spring sheet is provided under the rotating disk, and the positioning spring sheet is sleeved on the bottom edge of the inner rotating shaft, and the positioning spring sheet is higher than the lower end surface of the inner rotating shaft, and a positioning bud is provided on the edge of the positioning spring sheet, and the positioning spring sheet is fixedly connected to the bottom edge of the annular groove; when the inner rotating shaft rotates, the positioning bud can contact and disengage with the plurality of positioning grooves.

[0011] Furthermore, the bottom edge of the annular groove is provided with first positioning columns on both sides, the two ends of the positioning spring sheet are provided with holes for the spring sheet, and the other two ends of the positioning spring sheet are provided with positioning points, and the first positioning columns on both sides are respectively passed downward through the holes of the spring sheet at both ends to fix the positioning spring sheet on the first positioning columns of the annular groove.

[0012] Furthermore, a plurality of first positioning holes are provided on the bottom edge of the annular groove, a plurality of second positioning columns are provided on the top edge of the switch rubber-coated body, and the switch rubber-coated body is assembled with the first positioning holes of the outer shaft through the second positioning columns; assembly grooves are respectively provided on both sides of the top edge of the switch rubber-coated body, and the assembly grooves on both sides cooperate with the first positioning columns on both sides to fix the holes of the spring sheets at both ends; the outer shaft is made of hardware sheets by injection molding, and the annular groove of the outer shaft and the switch rubber-coated body are assembled and fixed together through four clamping feet on the bracket.

[0013] 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 is located above the lower cylindrical surface, the outer diameter of the upper cylindrical surface is smaller than the outer diameter of the lower cylindrical surface, and 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 a plurality of hole convex ribs, the upper cylindrical surface is in cooperation with the plurality of the hole convex ribs, and the lower cylindrical surface is in cooperation with the hole cylindrical surface, so that the inner rotating shaft can rotate inside the outer shaft and move up and down within a certain space.

[0014] Furthermore, a switch pressing gasket is provided between the inner rotating shaft and the switch rubber-coated body, the lower end surface of the inner rotating shaft abuts against the upper end surface of the switch pressing gasket, and the edge of the switch pressing gasket is fixedly connected to the switch rubber-coated body; a small boss is provided on the bottom edge of the switch pressing gasket, and when the inner rotating shaft presses down the switch pressing gasket, the small boss presses the pot piece downward to contact the switch.

[0015] Furthermore, the edge of the switch pressing gasket is provided with a plurality of snap positions, and the top edge of the switch rubber-coated body is provided with a plurality of third grooves, and the switch pressing gasket is respectively inserted into the plurality of third grooves of the switch rubber-coated body and fixed through the plurality of snap positions; fourth grooves on which the switch is assembled are respectively provided on both sides of the top edge of the switch rubber-coated body, and the pot piece is fixed through the fourth groove; small bosses are respectively provided on the bottom edges on both sides of the switch pressing gasket, and the small bosses on both sides can be respectively pressed on the center of the pot piece on both sides to produce a pressing action.

[0016] In summary, the technical solution of the present invention has the following beneficial effects: the structural design of the present invention is reasonable, (1) by including an outer shaft, the interior of the outer shaft is a hollow space that penetrates vertically, the interior of the outer shaft is provided with an inner rotating shaft, the interior of the inner rotating shaft is a hollow space that penetrates vertically, and the inner rotating shaft can rotate and move vertically relative to the outer shaft; thus, a new hollow encoder structure is provided, and its rotation mode is the rotation of the inner shaft, and it has a push switch function, integrating the two functions into one. (2) A rubber-coated code piece is provided at the bottom edge of the outer shaft, and a brush is provided at the bottom edge of the inner rotating shaft. In the process of the inner rotating shaft driving the brush to rotate, the brush can contact and disengage with the rubber-coated code piece; thus, in the process of the inner rotating shaft rotating, the inner rotating shaft drives the brush to continuously contact and disengage with the rubber-coated code piece. At this time, the brush and the rubber-coated code piece generate an on-off signal (that is, the on-off signal of the incremental encoder). (3) A switch rubber-coated body is provided below the outer shaft, and the interior of the switch rubber-coated body is a hollow space that runs vertically. A switch is provided on the top edge of the switch rubber-coated body, and a pot piece is covered above the switch. The center of the pot piece is arched upward, and when the inner shaft is pressed downward, the bottom of the inner shaft can press the center of the pot piece, so that the pot piece contacts downward with the switch; thus, when the inner shaft is pressed downward, the bottom of the inner shaft will press the center of the pot piece, and then the pot piece contacts downward with the switch in the switch rubber-coated body, and a switch on-off circuit is formed on the switch rubber-coated body. From this analysis, it can be seen that the present invention provides a different hollow encoder, whose rotating shaft is the inner shaft, and the rotating shaft has a pressing switch function in addition to the rotating function, and is a multifunctional hollow encoder with both inner shaft rotation and pressing type. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the explosion structure of the present invention;

[0018] Figure 2 yes Figure 1 A partial enlarged view of the upper side;

[0019] Figure 3 yes Figure 1 A partial enlarged view of the lower side;

[0020] Figure 4 It is a schematic diagram of the explosion structure of the present invention when it is inverted;

[0021] Figure 5 yes Figure 4 A partial enlarged view of the upper side;

[0022] Figure 6 yes Figure 4 A partial enlarged view of the lower side;

[0023] Figure 7 It is a cross-sectional structural schematic diagram of the present invention;

[0024] Description of the reference numerals: bracket (1), outer shaft (2), brush (3), rotating disk (4), positioning spring (5), inner rotating shaft (6), switch pressing pad (7), pot piece (8), switch rubber-coated body (9); foot (11); hardware piece (21), annular groove (22), hole convex rib (23), rubber-coated code piece (24), hole cylindrical surface (25), first positioning column (26), first positioning hole (27); brush claw (31), round hole ( 32); column (41), second groove (42), positioning groove (43); hole of spring piece (51), positioning bud point (52); convex block (61), lower cylindrical surface (62), upper cylindrical surface (63), lower end surface (64); upper end surface (71), latch (72), small boss (73); center (81), second positioning column (91), third groove (92), fourth groove (93), switch (94), assembly groove (95). DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention, but this does not constitute a limitation on the protection scope of the present invention.

[0026] In the present invention, for a clearer description, the following explanation is made: the observer faces the attached Figure 1 For observation, the observer's upper side is set as upper, and the observer's lower side is set as lower. It should be noted that the terms "front end", "rear end", "left side", "right side", "middle", "upper side", "lower side" and the like in the text indicate directions or positional relationships based on directions or positional relationships set in the accompanying drawings, which are only for the convenience of clearly describing the present invention, and do not indicate or imply that the structure or component referred to must have a specific direction or be constructed in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", and "fourth" are only used for the purpose of clarifying or simplifying the description, and cannot be understood as indicating or implying relative importance or quantity.

[0027] See also Figures 1 to 7The present embodiment provides a hollow encoder, including an outer shaft 2, the interior of the outer shaft 2 is a hollow space that penetrates vertically, an inner rotating shaft 6 is provided inside the outer shaft 2, the interior of the inner rotating shaft 6 is a hollow space that penetrates vertically, and the inner rotating shaft 6 can rotate and move vertically relative to the outer shaft 2; a rubber-coated code sheet 24 is provided at the bottom edge of the outer shaft 2, and a brush 3 is provided at the bottom edge of the inner rotating shaft 6. In the process of the inner rotating shaft 6 driving the brush 3 to rotate, the brush 3 can contact and disengage from the rubber-coated code sheet 24; a switch rubber-coated body 9 is provided below the outer shaft 2, the interior of the switch rubber-coated body 9 is a hollow space that penetrates vertically, and a switch 94 is provided at the top edge of the switch rubber-coated body 9, and a pot piece 8 is covered above the switch 94, and the center 81 of the pot piece 8 is arched upward. When the inner rotating shaft 6 is pressed downward, the bottom of the inner rotating shaft 6 can press the center 81 of the pot piece 8, so that the pot piece 8 contacts the switch 94 downward. Function: (1) The outer shaft includes an outer shaft, the interior of the outer shaft is a hollow space that runs vertically, and the interior of the outer shaft is provided with an inner rotating shaft, the interior of the inner rotating shaft is a hollow space that runs vertically, and the inner rotating shaft can rotate relative to the outer shaft and move vertically; thus providing a new hollow encoder structure, which rotates in the form of inner shaft rotation and has a push switch function, integrating the two functions into one. (2) The bottom edge of the outer shaft is provided with a rubber-coated code piece, and the bottom edge of the inner rotating shaft is provided with a brush. During the process of the inner rotating shaft driving the brush to rotate, the brush can contact and disengage with the rubber-coated code piece; thus, during the process of the inner rotating shaft rotating, the inner rotating shaft drives the brush to continuously contact and disengage with the rubber-coated code piece, and at this time, the brush and the rubber-coated code piece generate an on-off signal (i.e., the on-off signal of the incremental encoder). (3) A switch rubber-coated body is provided below the outer shaft, and the interior of the switch rubber-coated body is a hollow space that runs vertically. A switch is provided on the top edge of the switch rubber-coated body, and a pot piece is covered above the switch. The center of the pot piece is arched upward, and when the inner shaft is pressed downward, the bottom of the inner shaft can press the center of the pot piece, so that the pot piece contacts downward with the switch; thus, when the inner shaft is pressed downward, the bottom of the inner shaft will press the center of the pot piece, and then the pot piece contacts downward with the switch in the switch rubber-coated body, and a switch on-off circuit is formed on the switch rubber-coated body. From this analysis, it can be seen that the present invention provides a different hollow encoder, whose rotating shaft is the inner shaft, and the rotating shaft has a pressing switch function in addition to the rotating function, and is a multifunctional hollow encoder with both inner shaft rotation and pressing type.

[0028] Specifically, the bottom edge of the outer shaft 2 is provided with an annular groove 22, 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, and a plurality of rubber-coated code chips 24 are arranged in the annular groove 22; the bottom edge of the inner shaft 6 is sleeved with a rotating disk 4, the rotating disk 4 is rotatably assembled in the annular groove 22, and a plurality of brushes 3 are arranged on the top edge of the rotating disk 4, and the plurality of brushes 3 can contact and disengage with a plurality of rubber-coated code chips 24 respectively. Function: Through the setting of the annular groove 22, the inner shaft 6 can drive a plurality of brushes 3 to contact and disengage with a plurality of rubber-coated code chips 24 respectively through the rotating disk 4, thereby facilitating the brush and the rubber-coated code chip to generate an on-off signal (i.e., an on-off signal of an incremental encoder).

[0029] Specifically, the top edge of the rotating disk 4 is provided with a plurality of pillars 41, and the plurality of pillars 41 are sequentially distributed along the circumferential direction of the rotating disk 4; brush claws 31 and circular holes 32 are respectively provided at the two ends of the brush 3, and the brush 3 is inserted into the pillars 41 through the circular holes 32 and riveted together, and the brush 3 can contact and disengage with a plurality of rubber-coated code chips 24 through the brush claws 31, and the brush claw 31 of one brush 3 is adjacent to the circular hole 32 of another brush 3. Function: With such a configuration, the circular hole 32 of the brush 3 has a good fixing ability, and the brush claw 31 has a good ability to contact the rubber-coated code chip 24, and the brush 3 has good elasticity and is evenly and reasonably distributed; the rubber-coated code chip 24 contacts with a plurality of (such as three) brush claws 31 of the brush 3, and when the brush claw 31 rotates, the on-off signal generated with the code chip 24 is the on-off signal of the incremental encoder.

[0030] Specifically, the bottom edge of the inner rotating shaft 6 is provided with a plurality of protrusions 61, which are sequentially distributed 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 sequentially distributed along the circumferential direction of the rotating disk 4. The plurality of protrusions 61 are respectively inserted upward into the plurality of second grooves 42, so that the inner rotating shaft 6 can drive the rotating disk 4 to rotate together. Function: The inner rotating shaft 6 is a rotating shaft with a pressing function, which is inserted into the second groove 42 of the rotating disk 4 through the protrusion 61, and drives the rotating disk 4 to rotate together. The brush 3 is inserted into the column 41 of the rotating disk 5 through the circular hole 32 thereon, and is riveted together, and rotates with the rotating disk 4 and the inner rotating shaft 6. The three parts of the inner rotating shaft 6, the rotating disk 4, and the brush 3 together constitute the rotating part of the product.

[0031] Specifically, the bottom edge of the rotating disk 4 is provided with a plurality of positioning grooves 43, which are sequentially distributed along the circumferential direction of the rotating disk 4, and the plurality of positioning grooves 43 are located outside the plurality of second grooves 42; a positioning spring piece 5 is provided below the rotating disk 4, the positioning spring piece 5 is sleeved on the bottom edge of the inner rotating shaft 6, the positioning spring piece 5 is higher than the lower end surface 64 of the inner rotating shaft 6, a positioning rib 52 is provided on the edge of the positioning spring piece 5, and the positioning spring piece 5 is fixedly connected to the bottom edge of the annular groove 22; when the inner rotating shaft 6 rotates, the positioning rib 52 can contact and disengage with the plurality of positioning grooves 43. Function: The positioning rib 52 is continuously contacted and disengaged with the positioning grooves 43 on the rotating disk 4, so as to produce a one-by-one positioning feel during rotation.

[0032] Specifically, 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 sheet 5 are provided with spring sheet holes 51, and the other two ends of the positioning spring sheet 5 are provided with positioning buds 52, and the first positioning posts 26 on both sides respectively pass downward through the spring sheet holes 51 at both ends, so that the positioning spring sheet 5 is fixed on the first positioning posts 26 of the annular groove 22. Function: The positioning spring sheet 5 is fixed on the first positioning post 26 of the outer shaft 2 through the spring sheet holes 51 (i.e., positioning holes) thereon, thereby realizing the fixing of the positioning spring sheet 5, and the setting of the two positioning buds 52 can achieve a better hand feeling of positioning one gear at a time during rotation.

[0033] Specifically, the bottom edge of the annular groove 22 is provided with a plurality of first positioning holes 27, and the top edge of the switch rubber-coated body 9 is provided with a plurality of second positioning columns 91, and the switch rubber-coated body 9 is assembled with the first positioning hole 27 of the outer shaft 2 through the second positioning columns 91; the top edge of the switch rubber-coated body 9 is provided with assembly grooves 95 on both sides, and the assembly grooves 95 on both sides respectively cooperate with the first positioning columns 26 on both sides to fix the holes 51 of the springs at both ends; the outer shaft 2 is made of a metal sheet 21 by injection molding, and the annular groove 22 of the outer shaft 2 and the switch rubber-coated body 9 are assembled and fixed together through the four clamping feet 11 on the bracket 1. Function: The first positioning column 26 is used to insert the hole 51 of the spring of the positioning spring 5, and the first positioning hole 27 is assembled with the second positioning column 91, and through the four clamping feet 11 on the bracket 1, the outer shaft 2 is assembled with the switch rubber-coated body 9 and the positioning spring 5 to be fixed.

[0034] Specifically, the outer wall of the inner 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, and the convex block 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 a plurality of hole convex ribs 23, the upper cylindrical surface 63 is in contact with the plurality of hole convex ribs 23, and the lower cylindrical surface 62 is in contact with the hole cylindrical surface 25, so that the inner shaft 6 can rotate inside the outer shaft 2 and move up and down in a certain space. Function: the hole convex ribs 23 are used to be inserted into the upper cylindrical surface 63 of the inner shaft 6, and the hole cylindrical surface 25 is used to be inserted into the lower cylindrical surface 62 of the inner shaft 6. The inner rotating shaft 6 penetrates into the cylindrical body of the outer shaft 2 through the upper cylindrical surface 63 and the lower cylindrical surface 62 and cooperates with the hole rib 23 and the hole cylindrical surface 25 respectively, and can rotate and move up and down in the hole within a certain space (pressing space).

[0035] Specifically, a switch pressing gasket 7 is provided between the inner rotating shaft 6 and the switch rubber-coated body 9, the lower end face 64 of the inner rotating shaft 6 abuts against the upper end face 71 of the switch pressing gasket 7, and the edge of the switch pressing gasket 7 is fixedly connected to the switch rubber-coated body 9; a small boss 73 is provided at the bottom edge of the switch pressing gasket 7, and when the inner rotating shaft 6 presses down the switch pressing gasket 7, the small boss 73 will press the pot piece 8 downward to contact the switch 94. Function: The inner rotating shaft 6 presses on the upper end face 71 of the switch pressing gasket 7 through its lower end face 64 (realizing the upward support of the switch pressing gasket 7 to the inner rotating shaft 6), and presses on the center 81 of the pot piece 8 through the small boss 73 on the switch pressing gasket 7, generating a pressing action, and when the inner rotating shaft 6 is pressed down, the pot piece 8 will be pressed downward to contact the switch 94 in the switch rubber-coated body 9, and a switch on-off circuit is formed on the switch rubber-coated body 9. The inner shaft 6, the switch pressing gasket 7 and the pot piece 8 together constitute the pressing part of the product.

[0036] Specifically, a plurality of snap-in positions 72 are provided on the edge of the switch pressing gasket 7, and a plurality of third grooves 92 are provided on the top edge of the switch rubber-coated body 9. The switch pressing gasket 7 is respectively inserted into the plurality of third grooves 92 of the switch rubber-coated body 9 and fixed through the plurality of snap-in positions 72; fourth grooves 93 equipped with switches 94 are respectively provided on both sides of the top edge of the switch rubber-coated body 9, and the pot piece 8 is fixed through the fourth grooves 93; small bosses 73 are respectively provided on the bottom edges on both sides of the switch pressing gasket 7, and the small bosses 73 on both sides can be pressed on the center 81 of the pot piece 8 on both sides respectively to produce a pressing action. Function: The pot piece 8 is fixed by the fourth groove 93 on the switch rubber-coated body 9, and the switch pressing gasket 7 is inserted into the third groove 92 of the switch rubber-coated body 9 and fixed by the locking position 72 (because the upper part of the switch rubber-coated body 9 is the annular groove 22, the bottom edge of the annular groove 22 forms a limit for the locking position 72 of the third groove 92), thereby realizing the assembly and fixation of the switch pressing gasket 7 and the pot piece 8 on the switch rubber-coated body 9; and the setting of the two small bosses 73, the pot piece 8, and the switch 94 can better realize the formation of a switch on-off circuit on the switch rubber-coated body 9.

[0037] The product of the present invention is a new type of hollow encoder (i.e. a hollow encoder with inner shaft rotation and pressing function), which realizes inner rotating shaft and has pressing function. Similar hollow potentiometers and switches with inner rotating and pressing functions also belong to the same category of this technology. The traditional hollow encoder has outer shaft rotation, inner shaft fixed, and hollow space; while the new hollow encoder has inner shaft rotation, inner shaft pressing, outer shaft fixed, and hollow space.

[0038] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A hollow encoder, comprising an outer shaft (2), characterized in that: The interior of the outer shaft (2) is a hollow space that penetrates vertically. An inner rotating shaft (6) is provided inside the outer shaft (2). The interior of the inner rotating shaft (6) is a hollow space that penetrates vertically. The inner rotating shaft (6) can rotate and move vertically relative to the outer shaft (2). A rubber-coated code sheet (24) is provided at the bottom edge of the outer shaft (2). A brush (3) is provided at the bottom edge of the inner rotating shaft (6). When the brush (3) is driven by the inner rotating shaft (6) to rotate, the brush (3) can contact and disengage from the rubber-coated code sheet (24). A switch rubber-coated body (9) is provided below the outer shaft (2), the interior of the switch rubber-coated body (9) is a hollow space that penetrates vertically, a switch (94) is provided on the top edge of the switch rubber-coated body (9), and a pot piece (8) is covered above the switch (94), the center (81) of the pot piece (8) is arched upward, and when the inner rotating shaft (6) is pressed downward, the bottom of the inner rotating shaft (6) can press the center (81) of the pot piece (8) to make the pot piece (8) contact with the switch (94) downward.

2. According to claim 1, a hollow encoder is characterized in that: The bottom edge of the outer shaft (2) is provided with an annular groove (22), the inner diameter of which 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), and a plurality of the rubber-coated code sheets (24) are arranged in the annular groove (22); the bottom edge of the inner rotating shaft (6) is sleeved with a rotating disk (4), the rotating disk (4) is rotatably assembled in the annular groove (22), and a plurality of the brushes (3) are provided on the top edge of the rotating disk (4), and the plurality of the brushes (3) can respectively contact and disengage with a plurality of the rubber-coated code sheets (24).

3. A hollow encoder according to claim 2, characterized in that: The top edge of the rotating disk (4) is provided with a plurality of pillars (41), and the plurality of pillars (41) are sequentially distributed along the circumferential direction of the rotating disk (4); the two ends of the brush (3) are respectively provided with brush claws (31) and circular holes (32); the brush (3) is inserted into the pillars (41) through the circular holes (32) and riveted together; the brush (3) can contact and separate from the plurality of rubber-coated code sheets (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).

4. A hollow encoder according to claim 2, characterized in that: The bottom edge of the inner rotating shaft (6) is provided with a plurality of protrusions (61), and the plurality of protrusions (61) are sequentially distributed 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), and the plurality of second grooves (42) are sequentially distributed along the circumferential direction of the rotating disk (4). The plurality of protrusions (61) are respectively inserted upward into the plurality of second grooves (42), so that the inner rotating shaft (6) can drive the rotating disk (4) to rotate together.

5. A hollow encoder according to claim 4, characterized in that: The bottom edge of the rotating disk (4) is provided with a plurality of positioning grooves (43), the plurality of positioning grooves (43) are sequentially distributed along the circumferential direction of the rotating disk (4), and the plurality of positioning grooves (43) are located outside the plurality of second grooves (42); a positioning spring sheet (5) is provided below the rotating disk (4), the positioning spring sheet (5) is sleeved on the bottom edge of the inner rotating shaft (6), the positioning spring sheet (5) is higher than the lower end surface (64) of the inner rotating shaft (6), a positioning bud point (52) is provided on the edge of the positioning spring sheet (5), and the positioning spring sheet (5) is fixedly connected to the bottom edge of the annular groove (22); when the inner rotating shaft (6) rotates, the positioning bud point (52) can contact and disengage with the plurality of positioning grooves (43).

6. A hollow encoder according to claim 5, characterized in that: The bottom edge of the annular groove (22) is provided with first positioning columns (26) on both sides, and the two ends of the positioning spring sheet (5) are provided with spring sheet holes (51), and the other two ends of the positioning spring sheet (5) are provided with positioning points (52), and the first positioning columns (26) on both sides respectively pass downward through the spring sheet holes (51) at the two ends, so that the positioning spring sheet (5) is fixed on the first positioning columns (26) of the annular groove (22).

7. A hollow encoder according to claim 6, characterized in that: The bottom edge of the annular groove (22) is provided with a plurality of first positioning holes (27), and the top edge of the switch encapsulated body (9) is provided with a plurality of second positioning columns (91), and the switch encapsulated body (9) is assembled with the first positioning holes (27) of the outer shaft (2) through the second positioning columns (91); the two sides of the top edge of the switch encapsulated body (9) are respectively provided with assembly grooves (95), and the assembly grooves (95) on both sides respectively cooperate with the first positioning columns (26) on both sides to fix the holes (51) of the spring sheets at both ends; the outer shaft (2) is formed by injection molding of a metal sheet (21), and the annular groove (22) of the outer shaft (2) and the switch encapsulated body (9) are assembled and fixed together through four clamping feet (11) on the bracket (1).

8. A hollow encoder according to any one of claims 4 to 7, 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), and the convex block (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 a plurality of hole convex ribs (23), the upper cylindrical surface (63) is in contact with the plurality of hole convex ribs (23), and the lower cylindrical surface (62) is in contact with the hole cylindrical surface (25), so that the inner rotating shaft (6) can rotate inside the outer shaft (2) and move up and down within a certain space.

9. A hollow encoder according to any one of claims 2 to 7, characterized in that: A switch pressing gasket (7) is provided between the inner rotating shaft (6) and the switch rubber-coated body (9); the lower end surface (64) of the inner rotating shaft (6) abuts against the upper end surface (71) of the switch pressing gasket (7); the edge of the switch pressing gasket (7) is fixedly connected to the switch rubber-coated body (9); a small boss (73) is provided on the bottom edge of the switch pressing gasket (7); when the inner rotating shaft (6) presses down the switch pressing gasket (7), the small boss (73) presses the pot piece (8) downward to contact the switch (94).

10. A hollow encoder according to claim 9, characterized in that: The edge of the switch pressing gasket (7) is provided with a plurality of latching positions (72), and the top edge of the switch encapsulated body (9) is provided with a plurality of third grooves (92), and the switch pressing gasket (7) is respectively inserted into the plurality of third grooves (92) of the switch encapsulated body (9) through the plurality of latching positions (72) to be fixed; fourth grooves (93) equipped with the switch (94) are respectively provided on both sides of the top edge of the switch encapsulated body (9), and the pot piece (8) is fixed through the fourth grooves (93); small bosses (73) are respectively provided on the bottom edges of both sides of the switch pressing gasket (7), and the small bosses (73) on both sides can be pressed on the center (81) of the pot piece (8) on both sides to generate a pressing action.

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