Anti-loose installation structure of motor rotation angle sensor

Abstract

The utility model discloses an anti-loose installation structure of a motor rotation angle sensor, and belongs to the technical field of sensor installation, the anti-loose installation structure comprises a sensor shell and screws distributed on the sensor shell in an annular array mode and used for fixedly connecting the sensor shell with a motor; the anti-loose mounting structure further comprises a mounting box arranged at the position, corresponding to the screw, of the sensor shell, and a first elastic piece and a second elastic piece which are symmetrically arranged in the mounting box and move close to or away from each other. According to the anti-loose mounting structure of the motor rotation angle sensor, the first elastic piece, the second elastic piece, the air bag and the inflation assembly are arranged, when the head of a screw extrudes the first elastic piece, the pressure between the first elastic piece and the second elastic piece is gradually increased, and therefore the contact force between the screw and the rotation angle sensor shell is continuously increased; therefore, friction force of threaded connection is increased, and looseness of the screw due to vibration or external force is reduced.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of sensor installation, and particularly relates to a loosening-preventing installation structure of a motor rotation angle sensor. BACKGROUND

[0002] The motor rotation angle sensor, as a kind of key detection equipment, plays a vital role in the fields of industrial automation, automobile manufacturing, aerospace, etc. It monitors the rotation angle of the motor to provide accurate position feedback for the control system, thereby ensuring the stable operation and accurate control of the equipment.

[0003] The traditional installation method of the motor rotation angle sensor usually relies on screws for direct fixation. Although this method can provide sufficient connection force under static conditions, the screws are prone to loosening due to the vibration generated during the operation of the motor or the interference of other external forces, thereby weakening the fastening effect. This loosening not only may cause a slight shift of the position of the sensor, but also may cause measurement errors, thereby seriously affecting the measurement accuracy and overall stability of the sensor.

[0004] Therefore, the application provides a loosening-preventing installation structure of a motor rotation angle sensor to solve the above problems. CONTENT OF THE UTILITY MODEL

[0005] The application provides a loosening-preventing installation structure of a motor rotation angle sensor, which aims to solve the problems that the installation of the existing motor rotation angle sensor usually relies on screws for direct fixation, is prone to loosening due to the vibration generated during the operation of the motor or the interference of other external forces, and thereby affects the measurement accuracy and stability.

[0006] To achieve the above-mentioned purpose, the application provides the following technical solution: a loosening-preventing installation structure of a motor rotation angle sensor, comprising a sensor shell and screws arranged in a ring array on the sensor shell for fixed connection of the sensor shell and a motor.

[0007] The loosening-preventing installation structure further comprises a mounting box arranged on the sensor shell at a position corresponding to the screw and first and second elastic sheets symmetrically arranged in the mounting box and moving close to or away from each other, the first and second elastic sheets being fixedly connected at the side edges close to each other, for making the head of the screw in contact with the top end of the first elastic sheet and being pressed close to the second elastic sheet when the screw is tightened.

[0008] The bottom end of the second elastic sheet is fixedly provided with an air bag fixed to the bottom end inside the mounting box, an inflation assembly is arranged between the first elastic sheet and the second elastic sheet for inflating the air bag and pressing the second elastic sheet to move close to the first elastic sheet, the screw is longitudinally penetrated in the mounting box top end, the first elastic sheet and the second elastic sheet, the air bag in sequence and is screwed with the mounting box inside bottom end; when the screw head presses the first elastic sheet and moves close to the second elastic sheet, the pressure between the first elastic sheet and the second elastic sheet is increased, and with the gradual increase of the pressure between the first elastic sheet and the second elastic sheet, the contact force between the screw and the corner sensor shell is also continuously increased, thereby increasing the friction of the threaded connection, reducing the loosening of the screw due to vibration or external force, and when the screw is tightened and the first elastic sheet is compressed, the inflation assembly is activated, the air bag is inflated, the inflated air bag presses the second elastic sheet, additional thrust is increased, thereby further increasing the contact pressure between the second elastic sheet and the first elastic sheet. The increase of this pressure further strengthens the friction between the screw and the thread, which helps to prevent loosening.

[0009] Preferably, in order to facilitate the installation of the mounting box, the sensor shell is provided with a receiving groove corresponding to the position of the mounting box, and the mounting box is fixedly connected in the receiving groove. The design of the receiving groove enables the mounting box to be closely attached to the sensor shell without occupying additional space, thereby maintaining the compactness of the structure.

[0010] Preferably, in order to ensure the stability of the movement of the first elastic sheet and the second elastic sheet, a guide rod is fixedly arranged in the mounting box, and one side of the first elastic sheet and the second elastic sheet is slidably connected to the guide rod. The guide rod provides a stable path for the movement of the first elastic sheet and the second elastic sheet, preventing the deviation or deformation of the first elastic sheet and the second elastic sheet during the pressing process, thereby improving the overall stability.

[0011] Preferably, in order to realize elastic deformation, the first elastic sheet and the second elastic sheet are both in a horn-shaped structure, and the larger opening side of the first elastic sheet and the second elastic sheet is fixedly connected. The horn-shaped structure enables the first elastic sheet and the second elastic sheet to more effectively utilize the elasticity of the material when being pressed, generating greater deformation and elastic force, thereby enhancing the fastening effect.

[0012] Preferably, in order to facilitate the synchronous extrusion of the second elastic sheet when the screw head extrudes the first elastic sheet and inflates the air bag, the inflation assembly comprises a cylinder arranged between the first elastic sheet and the second elastic sheet and fixedly connected to the inner side of the second elastic sheet, a piston longitudinally moving in the cylinder, a push rod longitudinally penetrating the top end of the cylinder and fixedly connected to the inner side of the piston and the first elastic sheet at both ends, and an air pipe penetrating the bottom end of the cylinder and the second elastic sheet in turn and communicating with the inside of the air bag and the bottom end of the cylinder at both ends; through the cooperation of the push rod, the piston, the cylinder and the air pipe, the air bag can be inflated while the screw head extrudes the first elastic sheet, so that the air bag is inflated and the second elastic sheet is synchronously extruded, thereby realizing the double clamping and fastening of the screw and improving the anti-loose performance.

[0013] Preferably, in order to ensure that the screw is screwed into the mounting box and contacts the top end of the first elastic sheet, the diameter of the end of the first elastic sheet away from the second elastic sheet is greater than the diameter of the head of the screw; this design ensures that the screw can smoothly contact the top end of the first elastic sheet when it is screwed into the mounting box, thereby reducing the problem of insufficient fastening force or loosening caused by poor contact.

[0014] The anti-loose mounting structure of the motor angle sensor can increase the contact force between the screw and the outer shell of the angle sensor by setting the first elastic sheet and the second elastic sheet, so that the pressure between the first elastic sheet and the second elastic sheet increases when the screw head extrudes the first elastic sheet and approaches the second elastic sheet, and the contact force between the screw and the outer shell of the angle sensor also increases as the pressure between the first elastic sheet and the second elastic sheet gradually increases, thereby increasing the friction of the threaded connection and reducing the loosening of the screw due to vibration or external force.

[0015] The anti-loose mounting structure of the motor angle sensor can further increase the contact pressure between the second elastic sheet and the first elastic sheet by setting the air bag and the inflation assembly, so that the friction between the screw and the thread is further strengthened, which helps to prevent loosening. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is an application structure diagram of an anti-loose mounting structure of a motor angle sensor;

[0017] Figure 2 It is a structure diagram of an anti-loose mounting structure of a motor angle sensor;

[0018] Figure 3 It is a structure diagram of a mounting box in an anti-loose mounting structure of a motor angle sensor;

[0019] Figure 4 It is an exploded view of a mounting box in an anti-loose mounting structure of a motor angle sensor;

[0020] Figure 5 This is a schematic diagram of the structure of the first spring, the second spring, and the air bladder in an anti-loosening installation structure for a motor angle sensor;

[0021] Figure 6 This is a schematic diagram of the inflation component in an anti-loosening installation structure for a motor angle sensor.

[0022] In the picture:

[0023] 1. Sensor housing; 11. Receiving slot;

[0024] 2. Screws;

[0025] 3. Mounting box; 31. Guide rod;

[0026] 4. First shrapnel;

[0027] 5. Second shrapnel;

[0028] 6. Airbags;

[0029] 7. Inflation assembly; 71. Air cylinder; 72. Piston; 73. Push rod; 74. Air tube. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] This embodiment provides an anti-loosening installation structure for a motor rotation angle sensor, such as... Figures 1-6 As shown, the anti-loosening installation structure includes a sensor housing 1 and screws 2 arranged in a ring array on the sensor housing 1 for fixing the sensor housing 1 to the motor; the anti-loosening installation structure also includes a mounting box 3 set on the sensor housing 1 at the position corresponding to the screw 2, and a first spring 4 and a second spring 5 symmetrically arranged in the mounting box 3 and movable closer or further away. The edges of the first spring 4 and the second spring 5 that are close to each other are fixedly connected, so that when the screw 2 is tightened, its head contacts the top of the first spring 4 and is squeezed towards the second spring 5; the bottom end of the second spring 5 is fixedly provided with an airbag 6 fixed to the bottom end of the mounting box 3, and an inflation component 7 is provided between the first spring 4 and the second spring 5 for inflating the airbag 6 and squeezing the second spring 5 towards the first spring 4. The screw 2 passes longitudinally through the top end of the mounting box 3, the first spring 4 and the second spring 5, and the airbag 6, and is screwed to the bottom end of the mounting box 3.

[0032] In order to facilitate the installation of the box 3, the sensor shell 1 is provided with a receiving groove 11 corresponding to the position of the box 3, and the box 3 is fixedly connected in the receiving groove 11. The design of the receiving groove 11 enables the box 3 to be closely attached to the sensor shell 1 without occupying additional space, thereby maintaining the compactness of the structure.

[0033] In use, before installation, the first elastic sheet 4 and the second elastic sheet 5 are in a relatively relaxed state, and the air bag 6 is not inflated. When the screw 2 starts to be tightened, the head of the screw 2 first contacts the top end of the first elastic sheet 4. As the screw 2 continues to be tightened, the first elastic sheet 4 is extruded and starts to move downward and close to the second elastic sheet 5. During this process, the pressure between the first elastic sheet 4 and the second elastic sheet 5 gradually increases, thereby providing additional tightening force for the connection between the screw 2 and the sensor shell 1. At the same time, as the first elastic sheet 4 moves close to the second elastic sheet 5, the inflation assembly 7 also inflates the air bag 6 at the same time. The air bag 6 expands as the gas is filled, further extruding the second elastic sheet 5. When the second elastic sheet 5 is extruded, the contact pressure between the first elastic sheet 4 and the second elastic sheet 5 further increases. After the box 3 is fixed on the motor, the tightening of the screw 2 is paused. At this time, the contact force between the screw 2 and the sensor shell 1 can be increased through the pressure between the first elastic sheet 4 and the second elastic sheet 5, thereby strengthening the friction between the screw 2 and the screw thread.

[0034] Specifically, the inflation assembly 7 includes a gas cylinder 71 arranged between the first elastic sheet 4 and the second elastic sheet 5 and fixedly connected to the inner side of the second elastic sheet 5, a piston 72 longitudinally moving in the gas cylinder 71, a push rod 73 longitudinally penetrating the top end of the gas cylinder 71 and fixedly connected to the inner side of the piston 72 and the first elastic sheet 4 at both ends, and a gas pipe 74 sequentially penetrating the bottom end of the gas cylinder 71 and the second elastic sheet 5 and communicating with the inside of the air bag 6 at both ends.

[0035] When the head of the screw 2 extrudes the first elastic sheet 4 to move close to the second elastic sheet 5, the first elastic sheet 4 will synchronously drive the push rod 73 connected thereto to move, and with the movement of the push rod 73, the piston 72 connected with the push rod 73 can move in the air cylinder 71 to the end close to the air pipe 74, at this time, the gas in the air cylinder 71 will be compressed and transmitted to the air bag 6 through the air pipe 74, and the air bag 6 will gradually expand with the filling of the gas and exert an additional pushing force on the second elastic sheet 5, so that the second elastic sheet 5 moves close to the first elastic sheet 4, thereby further increasing the pressure between the second elastic sheet 5 and the first elastic sheet 4, and thereby strengthening the friction between the screw 2 and the thread, when it is necessary to disassemble the screw 2, the screw 2 can be rotated in the opposite direction to gradually loosen, and with the loosening of the screw 2, the pressure between the first elastic sheet 4 and the second elastic sheet 5 gradually decreases, and the first elastic sheet 4 and the second elastic sheet 5 move towards each other, at this time, the push rod 73 pushes the piston 72 to move away from the end of the air pipe 74, and the gas in the air bag 6 is gradually released into the air cylinder 71, thereby returning to the initial state.

[0036] Further, the mounting box 3 is fixedly provided with a guide rod 31, and one side of the first elastic sheet 4 and the second elastic sheet 5 are slidably connected to the guide rod 31; when the head of the screw 2 extrudes the first elastic sheet 4 to move close to the second elastic sheet 5 and the air bag 6 expands to extrude the second elastic sheet 5 to move close to the first elastic sheet 4, through the guiding action of the guide rod 31, the first elastic sheet 4 and the second elastic sheet 5 will stably slide along the guide rod 31 and will not deviate.

[0037] In addition, in order to realize elastic deformation, the first elastic sheet 4 and the second elastic sheet 5 are both in a horn-shaped structure, and one side of the first elastic sheet 4 and the second elastic sheet 5 with a larger opening is fixedly connected; the horn-shaped structure enables the first elastic sheet 4 and the second elastic sheet 5 to more effectively utilize the elasticity of the material when being extruded, to generate greater deformation and elastic force, thereby enhancing the fastening effect.

[0038] It can be understood that, in order to ensure that the screw 2 is screwed into the mounting box 3 and comes into contact with the top end of the first elastic sheet 4, the diameter of the end of the first elastic sheet 4 away from the second elastic sheet 5 is greater than the diameter of the head of the screw 2; this design enables the head of the screw 2 to come into contact with the top end of the first elastic sheet 4 with a larger diameter when being screwed into the mounting box 3, so that even if there is a slight positional deviation during installation, effective contact between the two can be ensured, and the problem of insufficient fastening force or loosening caused by poor contact is reduced.

[0039] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can make equivalent replacement or change according to the technical solution and concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A non-loosening mounting structure for a motor rotation angle sensor, comprising a sensor housing (1) and screws (2) arranged in a ring array on the sensor housing (1) for fixing the sensor housing (1) to the motor; Its features are: The anti-loosening installation structure also includes a mounting box (3) located on the sensor housing (1) at the position corresponding to the screw (2), and a first spring (4) and a second spring (5) symmetrically arranged in the mounting box (3) and movable closer to or further away from each other. The edges of the first spring (4) and the second spring (5) that are close to each other are fixedly connected, so that when the screw (2) is tightened, its head contacts the top of the first spring (4) and is pressed towards the second spring (5). The bottom end of the second spring (5) is fixedly provided with an airbag (6) fixed inside the bottom end of the mounting box (3). An inflation component (7) is provided between the first spring (4) and the second spring (5) for inflating the airbag (6) and squeezing the second spring (5) closer to the first spring (4). The screw (2) passes through the top of the mounting box (3), the first spring (4), the second spring (5), and the airbag (6) in sequence and is screwed to the bottom end inside the mounting box (3).

2. The anti-loosening installation structure of the motor angle sensor according to claim 1, characterized in that: The sensor housing (1) has a receiving groove (11) at the position corresponding to the mounting box (3), and the mounting box (3) is fixedly connected in the receiving groove (11).

3. The anti-loosening installation structure for the motor angle sensor according to claim 2, characterized in that: A guide rod (31) is fixedly installed inside the mounting box (3), and one side of the first spring (4) and the second spring (5) are slidably connected to the guide rod (31).

4. The anti-loosening installation structure of the motor angle sensor according to claim 3, characterized in that: The first spring (4) and the second spring (5) are both horn-shaped structures, and the larger opening side of the first spring (4) and the second spring (5) are fixedly connected.

5. The anti-loosening installation structure of the motor angle sensor according to claim 4, characterized in that: The inflation assembly (7) includes an air cylinder (71) disposed between the first spring (4) and the second spring (5) and fixedly connected to the inner side of the second spring (5), a piston (72) that moves longitudinally within the air cylinder (71), a push rod (73) that extends longitudinally through the top of the air cylinder (71) and is fixedly connected at both ends to the piston (72) and the inner side of the first spring (4) respectively, and an air tube (74) that extends sequentially through the bottom of the air cylinder (71) and the second spring (5) and is connected at both ends to the bottom of the air cylinder (71) and the inside of the air bag (6) respectively.

6. The anti-loosening installation structure of the motor angle sensor according to claim 1, characterized in that: The diameter of the end of the first spring (4) away from the second spring (5) is larger than the diameter of the head of the screw (2).

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