CN216977928U

CN216977928U - Ultra-thin encoder convenient to installation

Info

Publication number: CN216977928U
Application number: CN202122427086.4U
Authority: CN
Inventors: 罗晓宇; 于兆武
Original assignee: Changchun Shenghao Electronics Co ltd
Current assignee: Changchun Shenghao Electronics Co ltd
Priority date: 2021-10-09
Filing date: 2021-10-09
Publication date: 2022-07-15
Anticipated expiration: 2031-10-09

Abstract

The utility model relates to an ultrathin encoder convenient to install, which comprises a main body, a bearing, a rotating shaft, a magnet holder, a magnet, a connector, a magnetic induction device, a PCBA (printed circuit board assembly) and a rear cover, wherein the main body is provided with a bearing; an upper groove and a lower groove are formed in the inner cavity of the main body, a bearing is installed in each groove, the rotating shaft is installed on the main body through the two bearings, and an inner thread groove is formed in the rotating shaft; the magnet support is T-shaped, a groove for accommodating the magnet and a mounting hole matched with the electric tool are formed in the end part of the T shape, an external thread matched with the internal thread groove is formed in the T-shaped extension part, the magnet support is mounted on the rotating shaft through the external thread and the internal thread groove, and the end face of the T-shaped extension part is positioned in the inner cavity of the adjacent bearing; the connector and the magnetic induction device are electrically connected to one side of the PCBA close to the magnet, and the connector is opposite to the wire outlet groove; the rear cover is fixedly connected with the main body. The encoder has the advantages of small volume, high installation efficiency, convenient elimination of bearing clearance, reduction of manual assembly errors and the like.

Description

Ultra-thin encoder convenient to installation

Technical Field

The utility model relates to the technical field of encoders, in particular to an ultrathin encoder convenient to install.

Background

Magnetic encoders are devices that convert angular or linear displacement into an electrical signal using magnetic resistance or hall effect.

At present, most of magnetic encoders on the market at least comprise a main body, a rotating shaft, a magnet, a tray and two bearings, the two bearings are arranged in parallel along the axial direction of the main body, the rotating shaft penetrates through the two bearings and then is installed on the main body, the other end of the rotating shaft is provided with the tray, and the magnet is assembled on the tray. This structure allows the two bearings and the magnet to be arranged in series in the axial direction of the rotary shaft, i.e., the tray and the magnet are located on one side of the two bearings, and since the tray, the magnet and the two bearings in the above-described magnetic encoder are arranged in series in the axial direction of the rotary shaft, the overall axial dimension of the magnetic encoder is large, which limits the development thereof toward the thinning direction. In addition, the assembly process of the rotating shaft and the tray needs manual assembly, the production efficiency is low, and the error is large.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems that the conventional magnetic encoder is large in overall axial size, slow in manual assembly production efficiency and large in error, the utility model provides the ultrathin encoder which is convenient to install, the height of the encoder can be effectively reduced, the structure is convenient to install, and the production cost is low.

In order to solve the problems, the utility model adopts the following technical scheme:

an ultrathin encoder convenient to mount comprises a main body, a bearing, a rotating shaft, a magnet support, a magnet, a connector, a magnetic induction device, a PCBA and a rear cover, wherein a wire outlet groove is formed in the side wall of the main body;

an upper groove and a lower groove are formed in the inner cavity of the main body, one bearing is installed in each groove, the rotating shaft is installed on the main body through the two bearings, and an inner thread groove is formed in one end, located in the main body, of the rotating shaft;

the magnet support is T-shaped, the end part of the T-shaped magnet support is provided with a groove for accommodating the magnet and a pair of mounting holes matched with an electric tool, the T-shaped extension part is provided with an external thread matched with the internal thread groove, the magnet support fixedly provided with the magnet is mounted on the rotating shaft through the external thread and the internal thread groove, and the end surface of the T-shaped extension part is positioned in the inner cavity of the adjacent bearing;

the PCBA is positioned in the inner cavity of the main body and above the magnet and the magnet support, the connector and the magnetic induction device are electrically connected to one side, close to the magnet, of the PCBA, and the connector is opposite to the wire outlet groove;

the rear cover is fixedly connected with one end, close to the PCBA, of the main body, and is used for sealing the main body and shielding the PCBA.

Compared with the prior art, the utility model has the following beneficial effects:

(1) according to the utility model, the inner thread groove is formed at one end of the rotating shaft, the external thread matched with the inner thread groove is formed on the extending part of the magnet support, so that one part of the magnet support is screwed into the rotating shaft through thread matching, and one part of the magnet support is positioned in the inner cavity of the adjacent bearing, the axial heights of the magnet support and the bearing of the rotating shaft are shortened, the volume of the encoder is reduced, and the thinning development of the encoder is facilitated;

(2) according to the utility model, the end part of the magnet support is provided with the mounting hole matched with the electric tool, the magnet support is fixed on the electric tool, and after the external thread of the magnet support is matched with the internal thread groove of the rotating shaft, the magnet support is screwed into the rotating shaft by using the electric tool, so that on one hand, the clearance of the bearing can be conveniently eliminated, the process of eliminating the clearance of the bearing in the production process is simplified, on the other hand, the production and mounting efficiency of the encoder is improved, the labor cost is saved, and meanwhile, the error of manual assembly is reduced;

(3) the connector is positioned at the bottom of the PCBA, and the connector is opposite to the wire outlet groove on the main body, so that at least one part of the connector is positioned in the mounting cavity formed by the magnet support and the main body, and the mode of placing the connector below the PCBA saves the space occupied by the connector and is beneficial to further shortening the whole axial size of the encoder.

Drawings

FIG. 1 is a cross-sectional view of an ultra-thin encoder of the present invention that facilitates installation;

FIG. 2 is an exploded view of an ultra-thin encoder of the present invention that facilitates installation;

FIG. 3 is an exploded view of a magnetic holder installation process of an ultra-thin encoder according to the present invention;

description of reference numerals: 1. a main body; 2. a bearing; 3. a rotating shaft; 4. a magnet holder; 5. a magnet; 6. a connector; 7. a magnetic induction device; 8. PCBA; 9. a rear cover; 10. an outlet groove; 11. an internal thread groove; 12. an electric tool; 12-1, batch head; 12-2, an electric wrench; 12-3, a positioning column; 13. and (7) installing holes.

Detailed Description

The technical solution of the present invention will be described in detail with reference to the accompanying drawings and preferred embodiments.

As shown in fig. 1-3, the present invention provides an ultra-thin encoder convenient for installation, which includes a main body 1, a bearing 2, a rotating shaft 3, a magnet holder 4, a magnet 5, a connector 6, a magnetic induction device 7, a PCBA (Printed Circuit Board + Assembly, Circuit Board with electronic components soldered thereto) 8, and a rear cover 9, wherein a wire outlet groove 10 for routing the connector 6 is provided on a side wall of the main body 1.

Referring to fig. 1, the inner cavity of the main body 1 is provided with an upper groove and a lower groove, a bearing 2 is installed in each groove, the rotating shaft 3 is installed on the main body 1 through the two bearings 2, and an inner threaded groove 11 is formed at one end of the rotating shaft 3 located in the main body 1.

The magnet holder 4 is T-shaped, the end of the T-shape is provided with a groove for installing and accommodating the magnet 5, and the end of the T-shape is also provided with a pair of installation holes 13 matched with the electric tool 12. The T-shaped extension part is provided with an external thread matched with the internal thread groove 11, the magnet support 4 fixedly provided with the magnet 5 is arranged on the rotating shaft 3 through the external thread and the internal thread groove 11, and the end face of the T-shaped extension part is positioned in the inner cavity of the adjacent bearing 2, namely, at least one part of the T-shaped extension part is positioned in the inner ring cavity of the bearing. When the electric tool is installed, the magnet 5 is fixedly installed in the groove of the magnet support 4, then the positioning column 12-3 on the electric tool 12 is inserted into the installation hole 13 on the magnet support 4, the extending part of the magnet support 4 is positioned above the internal thread groove 11 of the rotating shaft 3, the electric tool is preset with torque, and the electric tool 12 is started to enable the magnet support 4 to be screwed into the internal thread groove 11 on the rotating shaft 3. When the magnet holder 4 is screwed into the rotary shaft 3, the magnet holder 4 and the rotary shaft 3 simultaneously apply pressure to the bearing 2 from both ends, thereby eliminating bearing play. The utility model utilizes the matching of the magnet holder 4 and the rotating shaft 3 to solve the process of eliminating the bearing clearance in the production process, simplifies the production process, simultaneously utilizes the electric tool 12 to install the magnet holder 4 to solve the problem of large error of manual assembly, and greatly improves the production and installation efficiency of the encoder.

The PCBA 8 is positioned in the inner cavity of the main body 1 and above the magnet 5 and the magnet holder 4, the connector 6 and the magnetic induction device 7 are electrically connected to one side, close to the magnet 5, of the PCBA 8, the magnetic induction device 7 is electrically connected to the center of the bottom surface of the PCBA 8 and matched with the magnet 5 below the PCBA, and a certain distance exists between the magnet 5 and the magnetic induction device 7. The connector 6 is opposite to the wire outlet groove 10, at least one part of the connector 6 is positioned in the installation cavity formed by the magnet support 4 and the main body 1, and the occupied space is small.

A rear cover 9 is fixedly connected to an end of the body 1 adjacent the PCBA 8, for example by gluing, for closing the body 1 and shielding the PCBA 8. Optionally, the main body 1 is made of aluminum to reduce the weight of the encoder, and the rear cover 9 is made of a magnetic conductive metal material, such as iron, iron-nickel alloy, iron-cobalt alloy, and the like.

Further, still referring to fig. 1-3, be equipped with the PCBA installation step in the main part 1, PCBA 8 passes through the screw or the sticky fixation on the PCBA installation step, is convenient for PCBA 8's location, keeps predetermined distance between the magnetic induction device 7 that makes PCBA 8 bottom center electricity connect and magnet 5.

Further, referring to fig. 3, the electric tool 12 includes a bit 12-1 and an electric wrench 12-2, the torque of the electric wrench 12-2 is adjustable, the bit 12-1 is fixed at the front end of the electric wrench 12-2, and the bit 12-1 is provided with a positioning post 12-3 inserted into and matched with the mounting hole 13. The magnet support 4 is fixed on the bit 12-1, then the external thread of the magnet support 4 is matched with the internal thread groove 11 of the rotating shaft 3, the electric wrench 12-2 is started, the bit 12-1 drives the magnet support 4 to rotate, and finally the magnet support 4 is screwed into the rotating shaft 3. The electric tool 12 of the present invention can be a hand-held electric tool, and has the advantages of small volume, simple operation, etc.

Optionally, the mounting hole 13 on the magnet holder 4 is shaped as a common circular hole, and the positioning column 12-3 is shaped as a cylinder capable of being inserted into and matched with the circular hole. The shape of the mounting hole 13 and the positioning post 12-3 can also adopt other common shapes as long as the positioning post 12-3 can be inserted into the mounting hole 13, so that the magnet holder 4 is screwed into the rotating shaft 3.

The utility model avoids the difficulty of the tray installation procedure in the original magnetic encoder to the production through the reasonable structure design, avoids the error generated by manual assembly, solves the technical problem of the whole axial increased height of the encoder with the magnet arranged on one side of the bearing by placing the connector below the circuit board, reduces the whole height of the magnetic encoder and is beneficial to the thinning development of the encoder.

The utility model has the following beneficial effects:

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The ultrathin encoder convenient to mount is characterized by comprising a main body (1), a bearing (2), a rotating shaft (3), a magnet support (4), a magnet (5), a connector (6), a magnetic induction device (7), a PCBA (8) and a rear cover (9), wherein a wire outlet groove (10) is formed in the side wall of the main body (1);

an upper groove and a lower groove are formed in the inner cavity of the main body (1), one bearing (2) is installed in each groove, the rotating shaft (3) is installed on the main body (1) through the two bearings (2), and an inner thread groove (11) is formed in one end, located in the main body (1), of the rotating shaft (3);

the magnet support (4) is T-shaped, the end part of the T-shape is provided with a groove for accommodating the magnet (5) and a pair of mounting holes (13) matched with an electric tool (12), the extending part of the T-shape is provided with an external thread matched with the internal thread groove (11), the magnet support (4) fixedly provided with the magnet (5) is mounted on the rotating shaft (3) through the external thread and the internal thread groove (11), and the end surface of the extending part of the T-shape is positioned in the inner cavity of the adjacent bearing (2);

the PCBA (8) is positioned in the inner cavity of the main body (1) and above the magnet (5) and the magnet holder (4), the connector (6) and the magnetic induction device (7) are electrically connected to one side, close to the magnet (5), of the PCBA (8), and the connector (6) is opposite to the wire outlet groove (10);

the rear cover (9) is fixedly connected with one end, close to the PCBA (8), of the main body (1) and used for closing the main body (1) and shielding the PCBA (8).

2. An ultra-thin encoder convenient to mount as claimed in claim 1, characterized in that there is a PCBA mounting step in the main body (1), and the PCBA (8) is fixed on the PCBA mounting step by screws or gluing.

3. The ultra-thin encoder convenient to install as claimed in claim 1, wherein the electric tool (12) comprises a batch head (12-1) and an electric wrench (12-2) with adjustable torque connected with the batch head (12-1), and a positioning column (12-3) in plug-in fit with the installation hole (13) is arranged on the batch head (12-1).

4. Ultra-thin encoder easy to install as claimed in claim 3, characterized in that the mounting hole (13) is a round hole and the positioning column (12-3) is a cylinder.

5. Ultra thin encoder easy to install as claimed in claim 1, characterized in that the back cover (9) is fixed to the body (1) by gluing.

6. Ultra-thin encoder easy to install as claimed in claim 1, characterized in that the material of the main body (1) is aluminum and the material of the back cover (9) is iron.