Pouring type encoder

Abstract

A pouring type encoder comprises: a shaft sleeve; the housing covers one end of the shaft sleeve; the input shaft extends into the housing through a shaft sleeve, and the input shaft is rotationally connected with the shaft sleeve through a bearing; the circuit board is fixedly arranged in the cover shell, a magnetic induction chip is arranged on the circuit board, the magnetic induction chip protrudes out of the bottom side of the circuit board, and the circuit board and the magnetic induction chip are coated with sealing glue; and the U-shaped magnet is fixedly arranged at the end part of one end, extending into the housing, of the input shaft, and the U-shaped magnet is arranged around the magnetic induction chip. According to the pouring type encoder provided by the utility model, the problem that the magnet exceeds the induction distance of the magnetic induction chip due to the requirement on the thickness of the sealing glue is solved, and the improved magnet structure can provide a more uniform and reliable magnetic field space, so that the magnetic induction chip can output signals with higher resolution.

Description

TECHNICAL FIELD

[0001] The utility model relates to sensor technical field, especially relate to a kind of pouring type encoders. BACKGROUND

[0002] In mining, aviation, dust environment work industry also all need to be precisely controlled mechanical device, necessarily use high-precision encoder to feedback movement information, but in this environment, any industrial product needs to have the requirement of explosion-proof, if using ordinary model encoder in such environment, there is inevitably great security risk.

[0003] To realize the explosion-proof isolation effect, the circuit board in the encoder needs to be sealed with glue, and the sealing thickness is required to be more than 3mm. The existing sensor adopts a circular radial magnet, and the distance that can be sensed by the magnetic induction chip is between 0.5mm and 1.5mm. Therefore, the 3mm pouring sealing thickness requirement and the safety distance requirement between the moving parts have exceeded the distance that can be sensed by the magnetic induction chip.

[0004] Therefore, in view of the deficiencies in the prior art, it is necessary to design a pouring type encoder to solve the above problems. UTILITY MODEL CONTENT

[0005] To overcome the deficiencies in the prior art, the utility model aims to provide a pouring type encoder.

[0006] To achieve the above object and other related objects, the technical scheme provided by the utility model is as follows: a pouring type encoder, comprising:

[0007] a shaft sleeve;

[0008] a cover, which is arranged at one end of the shaft sleeve;

[0009] an input shaft, which extends into the cover through the shaft sleeve, and is rotatably connected with the shaft sleeve through a bearing;

[0010] a circuit board, which is fixedly arranged in the cover, and is provided with a magnetic induction chip, the magnetic induction chip is protruded from the bottom side of the circuit board, and the circuit board and the magnetic induction chip are both coated with sealing glue;

[0011] a U-shaped magnet, which is fixedly arranged at the end of the input shaft extending into the cover, and surrounds the magnetic induction chip.

[0012] The preferred technical scheme is that the magnetic induction chip is protruded from the circuit board by means of an extended pin.

[0013] The U-shaped magnet is composed of a U-shaped seat and two magnets, the bottom of the U-shaped seat is fixed to the end of the input shaft, and the two magnets are fixed to the two side walls of the U-shaped seat and oppositely arranged.

[0014] The U-shaped seat is made of high permeability material.

[0015] In the assembled state, the magnetic induction chip is located between the two magnets.

[0016] Due to the above technical scheme, the pouring type encoder has the following advantages:

[0017] The pouring type encoder provided by the present application solves the problem that the magnet exceeds the magnetic induction chip sensing distance due to the sealing glue thickness requirement, and the improved magnet structure can provide a more uniform and reliable magnetic field space, so that the magnetic induction chip can output a higher resolution signal. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The present application relates to a cross-sectional view of the pouring type encoder.

[0019] Figure 2 The present application relates to a cross-sectional view of the pouring type encoder.

[0020] Figure 3 The present application relates to a cross-sectional view of the pouring type encoder.

[0021] Figure 4 The present application relates to a cross-sectional view of the pouring type encoder. DETAILED DESCRIPTION

[0022] The following is a specific embodiment of the present application, and those skilled in the art can easily understand the other advantages and effects of the present application from the content disclosed in the specification.

[0023] Please refer to Figures 1-4It should be noted that in the description of the utility model, it is necessary to point out that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the utility model product is used, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a specific orientation, structure and operation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" and the like are only used for differentiation in description and cannot be understood as indicating or implying relative importance. The terms "horizontal", "vertical", "overhanging" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0024] In the description of the utility model, it is also necessary to point out that, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication between the two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0025] Embodiment:

[0026] As shown in Figures 1 to 4 According to one general technical concept of the utility model, a pouring type encoder is provided, which comprises:

[0027] The shaft sleeve 1 is provided with a cover 2 at one end of the shaft sleeve 1.

[0028] The cover 2 is provided with a cover 2 at one end of the shaft sleeve 1.

[0029] The input shaft 3 extends into the cover 2 through the shaft sleeve 1, and the input shaft 3 is rotatably connected with the shaft sleeve 1 through the bearing 4.

[0030] The circuit board 5 is fixedly arranged in the cover 2, and the magnetic induction chip 6 is arranged on the circuit board 5, the magnetic induction chip 6 protrudes from the bottom side of the circuit board 5, and the circuit board 5 and the magnetic induction chip 6 are covered with the sealing glue 7.

[0031] The U-shaped magnet 8 is fixedly arranged at one end of the input shaft 3 extending into the cover 2, and the U-shaped magnet 8 surrounds the magnetic induction chip 6.

[0032] As shown in Figures 1 to 4As shown in the utility model of one example embodiment, the magnetic induction chip 6 is arranged on the circuit board 5 by means of the extension of the pin.

[0033] As Figures 1 to 4 As shown in the utility model of one example embodiment, the U-shaped magnet 8 is composed of a U-shaped seat 81 and two magnets 82, the bottom of the U-shaped seat 81 is fixed on the end of the input shaft 3, and the two magnets 82 are fixed on the two side walls of the U-shaped seat 81 and arranged oppositely.

[0034] As Figures 1 to 4 As shown in the utility model of one example embodiment, the U-shaped seat 81 is made of high permeability material.

[0035] As Figures 1 to 4 As shown in the utility model of one example embodiment, in the assembled state, the magnetic induction chip 6 is located between the two magnets 82.

[0036] Therefore, the utility model has the following advantages:

[0037] The utility model discloses a kind of pouring type encoders, solve the problem that magnet exceeds magnetic induction chip induction distance due to seal glue thickness requirement, and after the improved magnet structure, more uniform, reliable magnetic field space can be provided, so that magnetic induction chip can output higher resolution signal.

[0038] The above embodiment is only illustrative of the principle and effect of the utility model, and is not used to limit the utility model. Any person skilled in the art can modify or change the above embodiment without departing from the spirit and scope of the utility model. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the utility model should be covered by the claims of the utility model.

Claims

1. A cast encoder, characterized by, The utility model relates to a magnetic induction sensor, including: a shaft sleeve; a cover shell covering one end of the shaft sleeve; an input shaft extending into the cover shell through the shaft sleeve, the input shaft being rotatably connected with the shaft sleeve through a bearing; a circuit board fixedly arranged in the cover shell, the circuit board being provided with a magnetic induction chip, the magnetic induction chip protruding from the bottom side of the circuit board, the circuit board and the magnetic induction chip being both coated with an encapsulating glue; a U-shaped magnet fixedly arranged at the end of the input shaft extending into the cover shell, the U-shaped magnet surrounding the magnetic induction chip.

2. A cast encoder according to claim 1, wherein: The magnetic induction chip protrudes from the circuit board by means of an extended pin.

3. A cast encoder according to claim 1, wherein: The U-shaped magnet is composed of a U-shaped seat and two magnets, the bottom of the U-shaped seat being fixedly arranged at the end of the input shaft, the two magnets being fixedly arranged on the two side walls of the U-shaped seat and oppositely arranged.

4. A cast encoder according to claim 3, wherein: The U-shaped seat is made of a high-permeability material.

5. A cast encoder according to claim 3, wherein: In the assembled state, the magnetic induction chip is located between the two magnets.

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