Encoder

Abstract

The utility model relates to an encoder, comprising a bottom cover; the signal terminal is embedded in the plane, facing the signal brush, of the bottom cover, and the signal terminal is flush with the plane, facing the signal brush, of the bottom cover; the signal brush is connected with the rotor, and the signal brush is in contact fit with the signal terminal; the rotor is rotationally connected with the middle frame and is used for being connected with an external rotating shaft for transmission; the middle frame is connected with the bottom cover; and the upper cover is connected with the bottom cover. According to the encoder, the signal terminal is embedded in the bottom cover, so that the signal terminal is flush with the plane, facing the signal brush, of the bottom cover, subsequent grinding and polishing procedures are facilitated, the signal brush is prevented from being abraded, the service life of the encoder is prolonged, and the stability of conductive signals is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mouse accessories, in particular to an encoder. Background Art

[0002] An encoder is a mechanical rotating electrical signal generating device. It is an electronic component that directly converts the angular displacement of the rotation into a digital signal.

[0003] The signal terminal of the existing encoder is generally set in the groove of the plastic bottom shell. There is a step between the signal terminal and the groove. When the rotor drives the signal brush to slide on the bottom shell, the step between the signal terminal and the groove will cause the signal brush to jitter and wear severely, resulting in a short service life of the encoder and unstable conductive signal. Utility Model Content

[0004] In view of the technical problems existing in the prior art, the purpose of the utility model is to provide an encoder to solve the problem that there is a step between the signal terminal and the groove of the existing encoder. When the rotor drives the signal brush to slide on the bottom shell, the step between the signal terminal and the groove will cause the signal brush to jitter and wear severely, resulting in a short service life of the encoder and unstable conductive signal.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An encoder comprises: a bottom cover; a signal terminal, the signal terminal is embedded in the plane of the bottom cover facing the signal brush, and the signal terminal is arranged flush with the plane of the bottom cover facing the signal brush; a signal brush, the signal brush is connected to a rotor, and the signal brush is in contact with the signal terminal; a rotor, the rotor is rotatably connected to a middle frame, and the rotor is used to connect with an external rotating shaft for transmission; a middle frame, the middle frame is connected to the bottom cover; and an upper cover, the upper cover is connected to the bottom cover.

[0007] As a preferred embodiment, the rotor is provided with a connecting hole for connecting to the external rotating shaft for transmission, and a flexible transmission member is connected in the connecting hole, and the transmission member is used for connecting to the external rotating shaft for transmission.

[0008] As a preferred embodiment, a limiting boss is provided on the outer surface of the transmission member, a limiting groove is provided on the hole wall of the connecting hole, and the limiting boss is inserted into the limiting groove.

[0009] As a preferred embodiment, the positioning piece is connected to the middle frame, a convex block is provided on the positioning piece, and a rib is provided on the rotor, and the convex block and the rib cooperate to produce a beating feeling.

[0010] As a preferred embodiment, a positioning column is provided on the middle frame, a positioning hole is provided on the positioning sheet, and the positioning column cooperates with the positioning hole to fix the positioning sheet.

[0011] As a preferred embodiment, the signal brush is riveted to the rotor.

[0012] As a preferred embodiment, a guide boss is provided on the bottom cover, and a rivet foot is provided on the upper cover, and the rivet foot is engaged with the guide boss to fix the bottom cover and the upper cover.

[0013] In general, the utility model has the following advantages:

[0014] 1. The encoder of the utility model embeds the signal terminal in the bottom cover so that the signal terminal is flush with the plane of the bottom cover facing the signal brush, thereby facilitating subsequent grinding and polishing processes, avoiding wear of the signal brush, and increasing the service life of the encoder and the stability of the conductive signal.

[0015] 2. The encoder of the utility model is provided with a flexible transmission member on the connection hole connecting the rotor and the external shaft. The flexible transmission member can be more tightly combined with the external shaft to eliminate the noise of rotation, vibration and shaking. At the same time, the flexible transmission member has good elasticity and scalability, and can support the external shaft to achieve tilt and swing within 3° when tightly combined. Avoid the following problems with existing encoders: existing encoders are all plastic, and it is difficult to control the size. They are either loose or tight, resulting in a high production defect rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 An exploded diagram of an encoder.

[0017] Figure 2 This is a three-dimensional diagram of the assembly of the rotor and the rotating parts.

[0018] Figure 3 This is a stereoscopic diagram of the assembly of the signal terminal and the bottom cover.

[0019] Figure 4 This is a three-dimensional image of the middle frame.

[0020] Figure 5 This is a three-dimensional diagram of the assembly of the bottom cover and the middle frame.

[0021] Figure 6 A three-dimensional diagram of the rotor.

[0022] Figure 7 This is a three-dimensional diagram of the assembly of the bottom cover, middle frame and rotor.

[0023] Figure 8 This is a stereogram of the positioning film.

[0024] Fig. 9 This is a three-dimensional diagram of the assembly of the bottom cover, middle frame, rotor and positioning plate.

[0025] Fig.10 A stereogram of an encoder.

[0026] Fig.11This is another perspective view of an encoder.

[0027] Among them, 1 is the bottom cover, 2 is the signal terminal, 3 is the signal brush, 4 is the transmission rubber sleeve, 5 is the rotor, 6 is the middle frame, 7 is the positioning piece, 8 is the upper cover, 13 is the connecting hole, 14 is the limiting groove, 15 is the limiting boss, 16 is the positioning column, 17 is the rib, 18 is the positioning hole, 19 is the rivet foot, and 20 is the guide boss. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below in conjunction with specific implementation methods.

[0029] like Figure 1-11 As shown, an encoder provided in this embodiment includes: a bottom cover 1; a signal terminal 2, the signal terminal 2 is embedded in the plane of the bottom cover 1 facing the signal brush 3, and the signal terminal 2 is arranged flush with the plane of the bottom cover 1 facing the signal brush 3; a signal brush 3, the signal brush 3 is connected to the rotor 5, and the signal brush 3 is in contact with the signal terminal 2; a rotor 5, the rotor 5 is rotatably connected to the middle frame 6, and the rotor 5 is used to connect and transmit with an external shaft; a middle frame 6, the middle frame 6 is connected to the bottom cover 1; an upper cover 8, and the upper cover 8 is connected to the bottom cover 1. Exemplarily, the bottom cover 1 is a plastic bottom cover 1 of an existing encoder, and the difference is that in the bottom cover 1 of the encoder provided in this embodiment, the signal terminal 2 is embedded in the plane of the bottom cover 1 facing the signal brush 3, and the signal terminal 2 is arranged flush with the plane of the bottom cover 1 facing the signal brush 3, so that operations such as grinding and polishing can be supported to improve the flatness of the signal terminal 2 and the plastic surface, reduce friction, and improve the service life and signal stability of the encoder. Other components of the encoder provided in this embodiment can be consistent with the component structure of the existing encoder.

[0030] like Figure 2 As shown, in some embodiments, the rotor 5 is provided with a connection hole 13 connected to the external rotating shaft for transmission, and a flexible transmission member is connected in the connection hole 13, and the transmission member is used to connect and transmit with the external rotating shaft. Exemplarily, the structure of the transmission member is a cylindrical transmission rubber sleeve 4, and the transmission rubber sleeve 4 is made of flexible silicone material. During use, the external rotating shaft is inserted into the transmission rubber sleeve 4, and then the transmission rubber sleeve 4 transmits the torsional force to the rotor 5 to rotate. The flexible transmission rubber sleeve 4 can be more tightly combined with the external rotating shaft to eliminate the noise of rotation, vibration and shaking. At the same time, the flexible transmission rubber sleeve 4 has good elasticity and scalability, and can support the external rotating shaft to achieve tilting and swinging within 3° when tightly combined. Solve the problem that the products on the market are all plastic and integrated, and the size is difficult to control. The connection between the external rotating shaft and the rotor 5 is loose or tight, resulting in a high production defect rate.

[0031] The encoder provided in this embodiment can provide a good user experience, more stable signal output and longer practical life when the operator rolls the encoder through the external rotating shaft.

[0032] In some embodiments, a limiting boss 15 is provided on the outer surface of the transmission member, and a limiting groove 14 is provided on the hole wall of the connecting hole 13, and the limiting boss 15 is inserted into the limiting groove 14. Exemplarily, the limiting boss 15 is a square structure, and the limiting groove 14 is a rectangular groove. After the limiting boss 15 is inserted into the limiting groove 14, a fit similar to that between a shaft and a key block is formed, so that the transmission member receives the force of the external shaft and transmits it to the rotor 5.

[0033] The principle of the encoder's encoding function: the external shaft is inserted into the transmission rubber sleeve and rotated. The transmission rubber sleeve 4 drives the rotor 5 to rotate 360° forward or reverse. The rotor 5 drives the signal brush 3 to rotate. The brush of the signal brush 3 contacts the signal terminal 2 to realize the repeated on and off of the electrical signal, thereby realizing the encoder function.

[0034] In some embodiments, the positioning piece 7 is connected to the middle frame 6, and a convex block is provided on the positioning piece 7, and a rib 17 is provided on the rotor 5. The convex block and the rib 17 cooperate to produce a beating feeling. With the positioning piece 7 arranged in this way, the rotor 5 will have a repeated beating feeling up and down when rotating. 24 ribs 17 are evenly arranged along the circumference of the rotor 5, so that there are 24 beatings in 360°. The beating is caused by the upper cover 8 pressing the positioning piece 7. The top of the positioning piece 7 is provided with a semicircular convex block. The convex block interacts with the 24 ribs 17 arranged on the rotor 5 to produce an up and down vibration, thereby producing a hand feeling.

[0035] like Figure 4-5 As shown, in some embodiments, the middle frame 6 is provided with a positioning column 16, and the positioning sheet 7 is provided with a positioning hole 18, and the positioning column 16 cooperates with the positioning hole 18 to fix the positioning sheet 7. The positioning sheet 7 and the middle frame 6 are conveniently assembled by setting the positioning sheet 7 in this way.

[0036] like Figure 1 As shown, in some embodiments, the signal brush 3 is riveted to the rotor 5. Through such an assembly method, the overall structure is made compact.

[0037] like Figure 10-11 As shown, in some embodiments, the bottom cover 1 is provided with a guide boss 20, and the upper cover 8 is provided with a rivet foot 19, and the rivet foot 19 is engaged with the guide boss 20 to fix the bottom cover 1 and the upper cover 8. The bottom cover 1 and the upper cover 8 are convenient to assemble.

[0038] The encoder assembly method of this embodiment is as follows:

[0039] 1. The bottom cover 1 is embedded with the signal terminal 2, and then the plastic middle frame 6 is assembled to form a semi-enclosed base semi-finished product;

[0040] 2. Rivet the signal brush 3 onto the rotor 5, and install the transmission rubber sleeve 4 into the connecting hole 13 of the rotor 5. The limiting boss 15 of the transmission rubber sleeve 4 and the limiting groove 14 of the rotor 5 cooperate to form a semi-finished product of the rotor 5.

[0041] 3. Assemble the semi-finished rotor 5 into the semi-finished base, and then assemble the two circular holes of the positioning sheet 7 with the two positioning columns 16 of the middle frame 6. Finally, position the guide boss 20 provided by the bottom cover 1 and the guide groove formed by the two rivet feet 19 of the upper cover 8. The upper cover 8 is riveted through the middle frame 6. The four rivet feet 19 are riveted through the external mold to firmly wrap the middle frame 6 and the bottom cover 1. The assembly is completed.

[0042] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited by the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principle of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. An encoder, characterized in that: include: Bottom cover; The signal terminal is embedded in the plane of the bottom cover facing the signal brush, and the signal terminal is flush with the plane of the bottom cover facing the signal brush; A signal brush, the signal brush is connected to the rotor, and the signal brush contacts and cooperates with the signal terminal; The rotor is rotatably connected to the middle frame and is used to connect to the external shaft for transmission; A middle frame, wherein the middle frame is connected with the bottom cover; An upper cover is connected with the bottom cover.

2. An encoder according to claim 1, characterized in that: The rotor is provided with a connecting hole for connecting with an external rotating shaft for transmission. A flexible transmission member is connected in the connecting hole. The transmission member is used for connecting with the external rotating shaft for transmission.

3. An encoder according to claim 2, characterized in that: A limiting boss is arranged on the outer surface of the transmission part, a limiting groove is arranged on the hole wall of the connecting hole, and the limiting boss is inserted into the limiting groove.

4. An encoder according to claim 1, characterized in that: It also includes a positioning piece, which is connected to the middle frame, and is provided with a convex block. The rotor is provided with a rib, and the convex block and the rib cooperate to produce a beating feeling.

5. An encoder according to claim 1, characterized in that: The middle frame is provided with a positioning column, the positioning sheet is provided with a positioning hole, and the positioning column cooperates with the positioning hole to fix the positioning sheet.

6. An encoder according to claim 1, characterized in that: The signal brush is riveted to the rotor.

7. An encoder according to claim 1, characterized in that: The bottom cover is provided with a guide boss, and the upper cover is provided with a rivet foot, which is clamped with the guide boss to fix the bottom cover and the upper cover.

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