Hand wheel encoder integrated with high-precision grating disc

Abstract

The utility model discloses a hand wheel encoder integrated with a high-precision grating disc, which belongs to the technical field of hand wheel encoders, and is characterized in that the hand wheel encoder comprises a damping assembly, the top of the damping assembly is bolted with a protection assembly, the inside of the protection assembly is fixedly connected with an encoder body, and the protection assembly comprises a metal shell. The metal shell is connected to the top of the damping assembly in a bolted mode, the interior of the metal shell is fixedly connected with a plastic shell, a buffer cavity is formed between the opposite sides of the metal shell and the plastic shell, the bottom of the metal shell is fixedly connected with a connecting plate, and the top of the metal shell is fixedly connected with a mounting plate. External dust particles are prevented from entering the encoder, meanwhile, a moisture-proof function is achieved, external water vapor is prevented from entering the encoder, the service life of the encoder is prolonged, damage to the encoder caused by vibration and impact in a working environment is reduced by arranging the damping assembly, and therefore encoder precision reduction caused by impact is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of hand-crank wheel encoders, in particular to a hand-crank wheel encoder with an integrated high-precision grating disk. Background Art

[0002] A hand-cranked wheel encoder with an integrated high-precision grating disk is a precision measuring device that converts mechanical rotational motion into digital signals. It mainly consists of a hand-cranked wheel, a high-precision grating disk, a photoelectric detection system, a signal processing circuit and other key components. It is widely used in fields requiring precise manual control and position measurement.

[0003] Currently, linear grating rulers are used on machine tools to measure the travel distance of machine tool worktables. Linear grating rulers are measurement feedback devices that work based on the optical principle of grating. They are installed on one side of the guide rail, taking up a lot of space and making it inconvenient to arrange. They are also easily scratched and damaged. Due to the length of the ruler body, they can easily go too far, causing damage to the grating ruler. The grating reading head and ruler body are easily affected by moisture, causing reading deviations. After long-term use, they are prone to inaccurate readings. The installation time is too long and requires professional installation.

[0004] The existing patent (Announcement No.: CN209698616U) provides a hand-cranked wheel encoder, which has dust-proof and waterproof functions, ensures the working stability of the grating measurement component and increases the service life.

[0005] Existing patents have provided solutions to the above problems, but in industrial environments or dusty places, fine dust particles can easily enter the encoder. If the dust adheres to the grating disk or photoelectric detection system, the measurement error will increase. At the same time, the operation of the machine equipment will generate a lot of vibration and impact. The encoder usually needs to be used in these environments, so it must have good shock absorption performance to ensure its normal operation and accuracy.

[0006] Therefore, a hand-cranked wheel encoder with integrated high-precision grating disk is proposed. Utility Model Content

[0007] The purpose of this utility model is to provide a hand-cranked wheel encoder with an integrated high-precision grating disk, which can solve the problem that in industrial environments or dusty places, fine dust particles can easily enter the interior of the encoder. If the dust adheres to the grating disk or the photoelectric detection system, it will cause increased measurement errors. At the same time, the operation of the machine equipment will generate a lot of vibration and impact. The encoder usually needs to be used in these environments, so it must have good shock absorption performance to ensure its normal operation and accuracy.

[0008] To achieve the above object, the present invention provides the following technical solution: a hand-cranked wheel encoder integrated with a high-precision grating disk, comprising a shock-absorbing assembly, a protective assembly being bolted to the top of the shock-absorbing assembly, and an encoder body being fixedly connected to the interior of the protective assembly;

[0009] The protective component includes a metal shell, which is bolted to the top of the shock-absorbing component. A plastic shell is fixedly connected to the inside of the metal shell. A buffer cavity is provided between the opposite sides of the metal shell and the plastic shell. A connecting plate is fixedly connected to the bottom of the metal shell, and a mounting plate is fixedly connected to the top of the metal shell.

[0010] Preferably, the shock-absorbing assembly includes a mounting seat, a shock-absorbing spring is fixedly connected to the top of the mounting seat, and a positioning plate used in conjunction with the connecting plate is fixedly connected to the top of the shock-absorbing spring.

[0011] Preferably, a rubber sleeve is fixedly connected to the surface of the shock-absorbing spring, an anti-collision block is fixedly connected to the top of the mounting seat, and the side of the anti-collision block close to the positioning plate is fixedly connected to the positioning plate.

[0012] Preferably, the top of the mounting seat is fixedly connected to a limiting sleeve, and the interior of the mounting seat is movably connected to a mounting bolt.

[0013] Preferably, the top bolt of the mounting plate is connected with a cover plate, the interior of the cover plate is fixedly connected with a sealing joint, and the sealing joint is plugged into the interior of the mounting plate.

[0014] Preferably, the cover plate is movably connected to the interior of the cover plate with a connecting bolt, which passes through the cover plate and extends to the interior of the mounting plate.

[0015] Preferably, a sealing member used in conjunction with the encoder body is fixedly connected to the interior of the sealing joint, and the side of the sealing member close to the encoder body is in close contact with the encoder body.

[0016] Preferably, a sealing groove is provided inside the sealing joint, a sealing ring is fixedly connected inside the sealing groove, and the side of the sealing ring close to the mounting plate is in close contact with the inner wall of the mounting plate.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. This application implements protection for the encoder by providing a protective component to prevent external dust particles from entering the encoder. It also has a moisture-proof function to prevent external water vapor from entering the encoder, thereby increasing the service life of the encoder.

[0019] 2. This application reduces the damage to the encoder caused by vibration and impact in the working environment by providing a shock-absorbing component, thereby avoiding the reduction in encoder accuracy caused by impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is the overall structure diagram of the hand-cranked wheel encoder with integrated high-precision grating disk of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the protective component of the utility model;

[0022] Figure 3 This is a schematic structural diagram of the shock absorbing assembly of the utility model;

[0023] Figure 4 This is a schematic diagram of the connection of the cover plate of the utility model;

[0024] Figure 5 This is a schematic structural diagram of the sealing joint of the utility model.

[0025] In the figure, 1. shock-absorbing assembly; 101. mounting seat; 102. shock-absorbing spring; 103. positioning plate; 2. protective assembly; 201. metal shell; 202. plastic shell; 203. buffer chamber; 204. connecting plate; 205. mounting plate; 3. encoder body; 4. rubber sleeve; 5. anti-collision block; 6. limit sleeve; 7. mounting bolt; 8. cover plate; 9. sealing joint; 10. connecting bolt; 11. seal; 12. sealing groove; 13. sealing ring. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] See also Figure 1-5 , this utility model provides a technical solution:

[0028] A hand-cranked wheel encoder with an integrated high-precision grating disk includes a shock-absorbing component 1, a protective component 2 is bolted to the top of the shock-absorbing component 1, and an encoder body 3 is fixedly connected to the interior of the protective component 2;

[0029] The protective component 2 includes a metal shell 201, which is bolted to the top of the shock absorbing component 1. The inside of the metal shell 201 is fixedly connected to the plastic shell 202. A buffer cavity 203 is provided between the opposite sides of the metal shell 201 and the plastic shell 202. The bottom of the metal shell 201 is fixedly connected to a connecting plate 204, and the top of the metal shell 201 is fixedly connected to a mounting plate 205.

[0030] In this embodiment: the protective component 2 is fixed by the shock-absorbing component 1, and the shock-absorbing component 1 is used to prevent vibration and impact in the working environment from affecting the detection accuracy of the encoder body 3, and then the encoder body 3 is fixed by the protective component 2, and the protective component 2 is used to prevent fine dust particles in the outside air from entering the encoder body 3, the working position of the metal shell 201 is fixed by the shock-absorbing component 1, and then the plastic shell 202 is fixed by the metal shell 201, and then the metal shell 201 and the plastic shell 202 are combined to form a buffer cavity 203, thereby further reducing the impact of external shocks on the internal encoder, and then the mounting plate 205 and the connecting plate 204 are fixed by the metal shell 201, so as to facilitate the connection of other equipment.

[0031] Specifically, such as Figure 3 As shown, the shock absorbing assembly 1 includes a mounting seat 101 , a shock absorbing spring 102 is fixedly connected to the top of the mounting seat 101 , and a positioning plate 103 used in conjunction with the connecting plate 204 is fixedly connected to the top of the shock absorbing spring 102 .

[0032] Specifically, such as Figure 3 As shown, a rubber sleeve 4 is fixedly connected to the surface of the shock-absorbing spring 102 , an anti-collision block 5 is fixedly connected to the top of the mounting seat 101 , and the side of the anti-collision block 5 close to the positioning plate 103 is fixedly connected to the positioning plate 103 .

[0033] Specifically, such as Figure 3 As shown, the top of the mounting seat 101 is fixedly connected to the limiting sleeve 6, and the interior of the mounting seat 101 is movably connected to the mounting bolt 7.

[0034] In this embodiment: the rubber sleeve 4 is fixed by the shock-absorbing spring 102, and then the rubber sleeve 4 cooperates with the shock-absorbing spring 102. During the vibration process, the rubber sleeve 4 is deformed during the expansion and contraction movement of the shock-absorbing spring 102, and the vibration energy is converted into heat energy and dissipated. Then, the anti-collision block 5 is fixed by the mounting seat 101 and the positioning plate 103, so that the anti-collision block 5 cooperates with each other to prevent the mounting seat 101 and the positioning plate 103 from colliding with each other. Then, the limiting sleeve 6 is fixed by the mounting seat 101, and the positioning plate 103 is prevented from leaving the working range by the limiting sleeve 6. Then, the working position of the mounting bolt 7 is fixed by the mounting seat 101, and the mounting bolt 7 cooperates with the mounting seat 101 to fix the mounting seat 101.

[0035] Specifically, such as Figure 4 As shown, the top bolt of the mounting plate 205 is connected with a cover plate 8 , the interior of the cover plate 8 is fixedly connected with a sealing joint 9 , and the sealing joint 9 is plugged into the interior of the mounting plate 205 .

[0036] Specifically, such as Figure 4 As shown, the cover plate 8 is movably connected to a connecting bolt 10 , which passes through the cover plate 8 and extends to the interior of the mounting plate 205 .

[0037] In this embodiment: the cover plate 8 is fixed by the mounting plate 205, and the sealing joint 9 is fixed by the cover plate 8, and then the sealing joint 9 is used to prevent water vapor from entering the encoder body 3, and then the working position of the connecting bolt 10 is fixed by the cover plate 8, and the cover plate 8 is fixed by the connecting bolt 10 and the mounting plate 205.

[0038] Specifically, such as Figure 5 As shown, a sealing member 11 used in conjunction with the encoder body 3 is fixedly connected to the interior of the sealing joint 9 , and the side of the sealing member 11 close to the encoder body 3 is in close contact with the encoder body 3 .

[0039] Specifically, such as Figure 5 As shown, a sealing groove 12 is provided inside the sealing joint 9 , and a sealing ring 13 is fixedly connected inside the sealing groove 12 . The side of the sealing ring 13 close to the mounting plate 205 is in close contact with the inner wall of the mounting plate 205 .

[0040] In this embodiment: the seal 11 is fixed by the sealing joint 9, and then the seal 11 is used to prevent water vapor and fine dust from entering the encoder body 3, and then the sealing groove 12 opened in the sealing joint 9 is used to fix the sealing ring 13, and the sealing ring 13 is used to improve the connection sealing effect.

[0041] Working principle: During the operation of the encoder with integrated high-precision grating disk, first fix the mounting seat 101 in the working position through the mounting bolt 7, then insert the encoder body 3 into the plastic shell 202, and pass the output end through the sealing joint 9, so as to prevent external dust from entering the interior of the encoder body 3 through the seal 11, and connect the cover plate 8 to the mounting plate 205 through the connecting bolt 10, so as to insert the sealing joint 9 into the mounting plate 205. At this time, the sealing ring 13 fixed in the sealing joint 9 is in close contact with the inner wall of the mounting plate 205, thereby cooperating with the seal 11 to prevent dust and water vapor from entering the interior of the encoder, and then during the operation of the equipment, when the equipment vibrates, the vibration is first transmitted through the shock-absorbing spring 102. During this process, the shock-absorbing spring 102 stretches and contracts, and causes the rubber sleeve 4 to deform in this process, thereby cooperating with the shock-absorbing spring 102 to convert the vibration energy into heat energy and dissipate it, thereby reducing the impact of vibration on the accuracy of the encoder body 3.

[0042] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A hand-cranked wheel encoder with an integrated high-precision grating disk, comprising a shock-absorbing assembly (1), characterized in that: The top of the shock absorbing component (1) is bolted with a protective component (2), and the interior of the protective component (2) is fixedly connected with an encoder body (3); The protective component (2) comprises a metal shell (201), the metal shell (201) is bolted to the top of the shock absorbing component (1), a plastic shell (202) is fixedly connected to the interior of the metal shell (201), a buffer cavity (203) is provided between opposite sides of the metal shell (201) and the plastic shell (202), a connecting plate (204) is fixedly connected to the bottom of the metal shell (201), and a mounting plate (205) is fixedly connected to the top of the metal shell (201).

2. The hand-cranked wheel encoder with integrated high-precision grating disk according to claim 1, characterized in that: The shock absorbing assembly (1) comprises a mounting seat (101), a shock absorbing spring (102) is fixedly connected to the top of the mounting seat (101), and a positioning plate (103) used in conjunction with a connecting plate (204) is fixedly connected to the top of the shock absorbing spring (102).

3. The hand-cranked wheel encoder integrated with a high-precision grating disk according to claim 2, characterized in that: The surface of the shock-absorbing spring (102) is fixedly connected to a rubber sleeve (4), the top of the mounting seat (101) is fixedly connected to an anti-collision block (5), and the side of the anti-collision block (5) close to the positioning plate (103) is fixedly connected to the positioning plate (103).

4. The hand-cranked wheel encoder integrated with a high-precision grating disk according to claim 3, characterized in that: The top of the mounting seat (101) is fixedly connected to a limiting sleeve (6), and the interior of the mounting seat (101) is movably connected to a mounting bolt (7).

5. The hand-cranked wheel encoder integrated with a high-precision grating disk according to claim 1, characterized in that: The top bolt of the mounting plate (205) is connected to a cover plate (8), the interior of the cover plate (8) is fixedly connected to a sealing joint (9), and the sealing joint (9) is plugged into the interior of the mounting plate (205).

6. The hand-cranked wheel encoder integrated with a high-precision grating disk according to claim 5, characterized in that: The cover plate (8) is movably connected to a connecting bolt (10) inside, and the connecting bolt (10) passes through the cover plate (8) and extends to the inside of the mounting plate (205).

7. The hand-cranked wheel encoder integrated with a high-precision grating disk according to claim 5, characterized in that: A sealing member (11) used in conjunction with the encoder body (3) is fixedly connected to the interior of the sealing joint (9), and the side of the sealing member (11) close to the encoder body (3) is in close contact with the encoder body (3).

8. The hand-cranked wheel encoder integrated with a high-precision grating disk according to claim 7, characterized in that: A sealing groove (12) is provided inside the sealing joint (9), and a sealing ring (13) is fixedly connected inside the sealing groove (12). The side of the sealing ring (13) close to the mounting plate (205) is in close contact with the inner wall of the mounting plate (205).

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