Permalloy sensor shielding case

Abstract

The utility model discloses a permalloy sensor shielding case, which relates to the technical field of permalloy sensors, and comprises an upper cover body, an outer shell is arranged at the lower end of the upper cover body, a bottom plate is arranged at the lower end of the outer shell, a sensing part is arranged at the upper end of the bottom plate, a placing ring is fixedly arranged at the upper end of the bottom plate, and the placing ring is fixedly arranged at the lower end of the outer shell. The inner wall of the outer shell is fixedly provided with an inner shielding ring, the inner wall of the upper cover body is fixedly provided with an inner shielding bucket, the upper inner wall of the upper cover body is fixedly provided with an inner shielding cover, and the lower end of the inner shielding cover is fixedly connected with the upper end of the inner shielding bucket. According to the permalloy sensor shielding case provided by the utility model, the shell adopts a split type design, only installation and connection are needed during use, the use is relatively convenient, the shielding structure is provided with two layers, the shielding effect is better, the two sides and the upper end of the sensor can be reinforced, and the stability of the sensor placed in the case is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of Permalloy sensors, in particular to a Permalloy sensor shielding cover. Background Art

[0002] Permalloy sensor is a sensor that can measure the size and direction of magnetic field by utilizing the anisotropic magnetoresistance effect of ferromagnetic material Permalloy. This sensor has the advantages of small size, low power consumption, high sensitivity, strong anti-interference ability, high reliability, and easy installation. It shows great superiority in measuring weak magnetic fields and geomagnetic navigation based on weak magnetic fields, digital intelligent compass, position measurement, counterfeit banknote identification, etc.

[0003] However, the prior art still has the following problems:

[0004] First, most of the existing permalloy sensor shields are integrated single-layer shielding structures, which are troublesome to use and have limited shielding capabilities. If a split double-layer shielding structure can be designed, it will be easy to install and use, and have a stronger shielding capability. In addition, the sensor is usually placed in the shielding cover and cannot be fixed.

[0005] Secondly, the Permalloy sensor shielding cover of the prior art is usually inconvenient to reinforce both sides of the sensor. Since the sensor needs to be limited when used in the shielding cover, if the position of the sensor is fixed and unstable, when the sensor contacts the shielding structure, the shielding effect of the shielding cover will be reduced.

[0006] In view of the above problems, the inventor proposes a Permalloy sensor shielding cover to solve the above problems. Utility Model Content

[0007] In order to solve the problems that the integrated single-layer shielding structure is troublesome to use, has limited shielding ability and is inconvenient to reinforce both sides of the sensor; the purpose of the utility model is to provide a Permalloy sensor shielding cover.

[0008] In order to solve the above technical problems, the utility model adopts the following technical scheme: a permalloy sensor shielding cover, comprising an upper cover body, an outer shell body is provided at the lower end of the upper cover body, a bottom plate is provided at the lower end of the outer shell body, a sensor is provided at the upper end of the bottom plate, a placement ring is fixedly provided at the upper end of the bottom plate, and the sensor is located in the placement ring, an inner shielding ring is fixedly provided at the inner wall of the outer shell body, an inner shielding bucket is fixedly provided at the inner wall of the upper cover body, an inner shielding cover is fixedly provided at the upper inner wall of the upper cover body, the lower end of the inner shielding cover is fixedly connected to the upper end of the inner shielding bucket, and the lower end of the inner shielding bucket is movably fitted with the upper end of the inner shielding ring, a connecting column is fixedly provided at the lower end of the connecting column, an indirect disk is fixedly provided at the lower end of the indirect disk, a plurality of first spring shock absorbers are fixedly provided, six first spring shock absorbers are provided, and the six first spring shock absorbers are distributed in a ring array, and a contact disk is fixedly provided at the lower ends of the plurality of first spring shock absorbers, and the contact disk is made of soft material.

[0009] Preferably, reinforcement tubes are fixedly provided on the inner walls on both sides of the inner shielding ring, a moving column is movably inserted at the inner end of the reinforcement tube, a contact block is fixedly provided at one end of the moving column, the contact block is made of soft material, a moving disk is fixedly provided at the other end of the moving column, the two reinforcement tubes are distributed in a mirror image, the outer surface of the moving disk is in contact with the inner wall of the reinforcement tube, and the moving disk and the inner wall of one side of the reinforcement tube are jointly fixedly connected with a second spring shock absorber.

[0010] Preferably, a snap ring is fixedly provided at the lower end of the upper cover body, and an annular groove for cooperating with the snap ring is opened at the upper end of the outer shell, multiple fixing grooves are opened on the outer surfaces of the snap ring and the outer shell, and plugs are movably inserted into the fixing grooves at two corresponding positions, and six plug posts distributed in a circular array are fixedly provided at the lower end of the outer shell, and six column grooves for cooperating with the plug posts are opened at the upper end of the bottom plate, and the outer surface of the plug posts is fitted with the inner wall of the column groove, and after the plug posts are inserted, the bottom plate and the outer shell are fixed with bolts.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The utility model uses an upper cover body, and under the action of the outer shell and the bottom plate therein, the upper cover body, the outer shell and the bottom plate constitute the outer shell of the shielding cover as the shielding outer layer. The sensor is the sensor body, and the inner shielding ring, the inner shielding bucket and the inner shielding cover constitute the shielding inner layer structure. The design of the double-layer shielding structure makes the shielding effect better. The elastic force of the first spring shock absorber provided at the lower end of the inner shielding cover makes the contact plate contact the upper end of the outer surface of the sensor to generate a downward thrust, so that the sensor is firmly fixed in the shielding cover, the shielding effect is good and the sensor is placed more stably. The outer shell and the upper cover are connected and installed by inserting the snap ring into the annular groove and then inserting the plug into the fixing groove. The outer shell and the bottom plate are connected and installed by the cooperation of the plug column and the column groove. The outer shell adopts a split design, and only needs to be installed and connected when in use, which is more convenient to use. In addition, the shielding structure is provided with two layers, so as to achieve a better shielding effect.

[0013] 2. The utility model uses a reinforcement tube, in which the contact block and the second spring shock absorber are used, so that the contact block contacts the outer surface of the sensor. At this time, the moving column is inserted into the reinforcement tube, and the moving column drives the moving plate to move, thereby generating a displacement. The elastic force of the second spring shock absorber causes the contact block to generate a thrust toward the sensor, so that the two sides of the sensor can be reinforced to improve the stability of the sensor placed in the shielding cover. The two sides and the upper end of the sensor can be reinforced to achieve the effect of improving the stability of the sensor placed in the cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a schematic diagram of the structure of the utility model.

[0016] Figure 2 This is an exploded view of the structure of the utility model.

[0017] Figure 3 This is an exploded view of the connecting column and its connecting structure of the utility model.

[0018] Figure 4 This is a schematic diagram of the internal structure of the reinforcement pipe of the utility model.

[0019] In the figure: 1. upper cover body; 11. outer shell body; 12. bottom plate; 2. snap ring; 21. annular groove; 22. fixing groove; 23. plug; 24. plug column; 25. column groove; 3. sensor; 31. placement ring; 4. inner shielding ring; 41. inner shielding bucket; 42. inner shielding cover; 5. connecting column; 51. indirect disk; 52. first spring shock absorber; 53. contact disk; 6. reinforcement tube; 61. moving column; 62. contact block; 63. moving disk; 64. second spring shock absorber. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Embodiment 1: Figure 1-3 As shown, the utility model provides a permalloy sensor shielding cover, including an upper cover body 1, an outer shell 11 is provided at the lower end of the upper cover body 1, a bottom plate 12 is provided at the lower end of the outer shell 11, a sensor 3 is provided at the upper end of the bottom plate 12, an inner shielding ring 4 is fixedly provided on the inner wall of the outer shell 11, an inner shielding bucket 41 is fixedly provided on the inner wall of the upper cover body 1, an inner shielding cover 42 is fixedly provided on the upper inner wall of the upper cover body 1, a connecting column 5 is fixedly provided on the lower end of the inner shielding cover 42, an indirect disk 51 is fixedly provided on the lower end of the connecting column 5, a plurality of first spring shock absorbers 52 are fixedly provided on the lower end of the indirect disk 51, and a plurality of first spring shock absorbers 53 are fixedly provided on the lower end of the indirect disk 51. 2 is jointly fixed with a contact plate 53, the upper cover body 1, the outer shell body 11 and the bottom plate 12 constitute the outer shell of the shielding cover as the shielding outer layer, the sensor 3 is the sensor body, the inner shielding ring 4 and the inner shielding bucket 41 and the inner shielding cover 42 constitute the shielding inner layer structure, the design of the double-layer shielding structure makes the shielding effect better, and the elastic force of the first spring shock absorber 52 provided at the lower end of the indirect plate 51 connected by the connecting column 5 makes the contact plate 53 contact the upper end of the outer surface of the sensor 3, generating a downward thrust, so that the sensor is firmly fixed in the shielding cover, the shielding effect is good and the sensor is placed more stably.

[0022] A snap ring 2 is fixedly provided at the lower end of the upper cover body 1, and an annular groove 21 for cooperating with the snap ring 2 is provided at the upper end of the outer shell 11. The outer surfaces of the snap ring 2 and the outer shell 11 are provided with multiple fixing grooves 22, and plugs 23 are movably inserted into two corresponding fixing grooves 22.

[0023] By adopting the above technical solution, the connection and installation of the outer shell 11 and the upper cover 1 are facilitated.

[0024] Six plug posts 24 distributed in a circular array are fixedly provided at the lower end of the outer shell 11 , and six column grooves 25 for cooperating with the plug posts 24 are opened at the upper end of the bottom plate 12 .

[0025] By adopting the above technical solution, the connection and installation of the outer shell 11 and the bottom plate 12 are facilitated.

[0026] A placement ring 31 is fixedly provided on the upper end of the bottom plate 12 , and the sensor 3 is located in the placement ring 31 .

[0027] By adopting the above technical solution, it is convenient to limit the position of the sensor 3.

[0028] There are six first spring dampers 52 , and the six first spring dampers 52 are distributed in a ring array.

[0029] By adopting the above technical solution, the resilience of the contact plate contact sensor is improved.

[0030] The lower end of the inner shielding cover 42 is fixedly connected to the upper end of the inner shielding bucket 41 , and the lower end of the inner shielding bucket 41 is movably fitted to the upper end of the inner shielding ring 4 .

[0031] By adopting the above technical solution, the connectivity of the inner shielding layer is improved, and the sealing performance of the inner shielding layer is good.

[0032] Embodiment 2: Figure 4 As shown, the inner walls of both sides of the inner shielding ring 4 are fixed with reinforcement tubes 6, and a moving column 61 is movably inserted at the inner end of the reinforcement tube 6, and a contact block 62 is fixedly provided at one end of the moving column 61, and a moving disk 63 is fixedly provided at the other end of the moving column 61. The moving disk 63 and the inner wall of one side of the reinforcement tube 6 are jointly and fixedly connected with a second spring shock absorber 64. The side reinforcement is achieved through the reinforcement tube 6, and the contact block 62 contacts the outer surface of the sensor. At this time, the moving column 61 is inserted into the reinforcement tube 6, and the moving column 61 drives the moving disk 63 to move, generating displacement, so that the elastic force of the second spring shock absorber 64 makes the contact block 62 generate a thrust in the direction of the sensor, so that the two sides of the sensor can be reinforced, and the stability of the sensor placed in the shielding cover is improved.

[0033] By adopting the above technical solution, both sides of the placed sensor can be reinforced to further improve the stability of the sensor.

[0034] The two reinforcement tubes 6 are distributed in a mirror image, and the outer surface of the movable plate 63 is in contact with the inner wall of the reinforcement tube 6 .

[0035] By adopting the above technical solution, the side support effect of the shield is improved.

[0036] Working principle: the upper cover body 1, the outer shell body 11 and the bottom plate 12 constitute the outer shell of the shielding cover, which serves as the shielding outer layer. The sensor 3 is the sensor body. The inner shielding ring 4, the inner shielding bucket 41 and the inner shielding cover 42 constitute the shielding inner layer structure. The design of the double-layer shielding structure makes the shielding effect better. The elastic force of the first spring shock absorber 52 provided at the lower end of the indirect disk 51 connected by the connecting column 5 makes the contact disk 53 contact the upper end of the outer surface of the sensor 3. When the contact disk 53 contacts the upper end of the outer surface of the sensor 3, a downward thrust is generated, so that the sensor is firmly fixed in the shielding cover, the shielding effect is good and the sensor is placed more stably. The ring 2 is inserted into the annular groove 21, and then the plug 2 is inserted into the annular groove 21. 3 is inserted into the fixing groove 22 to complete the connection and installation of the outer shell 11 and the upper cover 1. The connection and installation of the outer shell 11 and the bottom plate 12 are realized by the cooperation of the plug column 24 and the column groove 25. The placement ring 31 is convenient for limiting the sensor 3. The side reinforcement is through the reinforcement tube 6. The contact block 62 contacts the outer surface of the sensor. At this time, the moving column 61 is inserted into the reinforcement tube 6. The moving column 61 drives the moving plate 63 to move and generate displacement, so that the elastic force of the second spring shock absorber 64 causes the contact block 62 to generate a thrust in the direction of the sensor, so that the two sides of the sensor can be reinforced, and the stability of the sensor placed in the shielding cover is improved.

[0037] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A Permalloy sensor shield, comprising an upper cover (1), characterized in that: An outer shell (11) is provided at the lower end of the upper cover body (1), a bottom plate (12) is provided at the lower end of the outer shell (11), a sensor (3) is provided at the upper end of the bottom plate (12), an inner shielding ring (4) is fixedly provided on the inner wall of the outer shell (11), an inner shielding bucket (41) is fixedly provided on the inner wall of the upper cover body (1), an inner shielding cover (42) is fixedly provided on the upper inner wall of the upper cover body (1), a connecting column (5) is fixedly provided on the lower end of the inner shielding cover (42), an indirect disk (51) is fixedly provided on the lower end of the connecting column (5), a plurality of first spring shock absorbers (52) are fixedly provided on the lower end of the plurality of first spring shock absorbers (52), and a contact disk (53) is fixedly provided on the lower ends of the plurality of first spring shock absorbers (52).

2. A Permalloy sensor shield as claimed in claim 1, characterized in that: Reinforcement tubes (6) are fixedly provided on the inner walls of both sides of the inner shielding ring (4); a movable column (61) is movably inserted at the inner end of the reinforcement tube (6); a contact block (62) is fixedly provided at one end of the movable column (61); a movable disk (63) is fixedly provided at the other end of the movable column (61); and a second spring shock absorber (64) is fixedly connected to the movable disk (63) and the inner wall of one side of the reinforcement tube (6).

3. A Permalloy sensor shield as claimed in claim 1, characterized in that: A snap ring (2) is fixedly provided at the lower end of the upper cover body (1), an annular groove (21) for use with the snap ring (2) is provided at the upper end of the outer shell (11), a plurality of fixing grooves (22) are provided on the outer surfaces of the snap ring (2) and the outer shell (11), and plugs (23) are movably inserted into two fixing grooves (22) at corresponding positions.

4. A Permalloy sensor shield as claimed in claim 1, characterized in that: The lower end of the outer shell (11) is fixedly provided with six insertion posts (24) distributed in a ring array, and the upper end of the bottom plate (12) is provided with six post grooves (25) used in conjunction with the insertion posts (24).

5. A Permalloy sensor shield as claimed in claim 1, characterized in that: A placement ring (31) is fixedly provided on the upper end of the bottom plate (12), and the sensor (3) is located inside the placement ring (31).

6. A Permalloy sensor shield as claimed in claim 1, characterized in that: There are six first spring shock absorbers (52), and the six first spring shock absorbers (52) are distributed in a ring array.

7. A Permalloy sensor shield as claimed in claim 1, characterized in that: The lower end of the inner shielding cover (42) is fixedly connected to the upper end of the inner shielding bucket (41), and the lower end of the inner shielding bucket (41) is movably fitted to the upper end of the inner shielding ring (4).

8. A Permalloy sensor shield as claimed in claim 2, characterized in that: The two reinforcement tubes (6) are distributed in a mirror-image manner, and the outer surface of the movable plate (63) fits the inner wall of the reinforcement tube (6).

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