Rotating speed sensor mounting structure

Abstract

The utility model provides a rotation speed sensor mounting structure, which comprises a rotation speed sensor body and a mounting seat, a sleeve is fixed in the mounting seat in a penetrating manner, the top of the sleeve is provided with a caulking groove, the sleeve is provided with an accommodating groove on the bottom wall of the caulking groove, the lower half part of the sleeve is internally provided with a thread groove, and the thread groove is provided with a thread. A threaded part is arranged in the middle of the rotating speed sensor body, and the rotating speed sensor body is in threaded connection with the threaded groove through the threaded part; two groups of annular flanges are fixedly mounted on the surface of the rotating speed sensor body, a rotating pipe is arranged on the outer side of the rotating speed sensor body in a sleeving manner, two groups of friction strips are fixedly mounted on the circumferential surface of the rotating pipe, four groups of elastic steel sheets are fixedly mounted in the rotating speed sensor body, and the elastic steel sheets are clamped on the two sides of the friction strips in pairs. The mounting structure has the advantages of being convenient to mount and stable in mounting effect.

Description

Technical Field

[0001] The utility model relates to the field of rotation speed sensors, in particular to a rotation speed sensor installation structure. Background Art

[0002] The speed sensor is a sensor that converts the speed of a rotating object into an electrical output. The speed sensor is an indirect measuring device and can be manufactured by mechanical, electrical, magnetic, optical and hybrid methods. Generally, speed sensors are installed on automobile accessories such as the gearbox clutch housing to detect the speed.

[0003] A Chinese patent with application date: 2020-09-03 and announcement number: CN214011274U discloses a speed sensor mounting structure and an engine, which cleverly realizes the precise control of the air gap of the speed sensor. The nut threaded with the speed sensor is pressed by a clamping mechanism to bring it closer to the speed sensor seat. A gasket is installed between the nut and the speed sensor seat. At this time, the air gap of the speed sensor is the thickness of the gasket. The speed sensor mounting structure proposed in the utility model accurately determines the air gap of the speed sensor through the thickness of the gasket, avoids the error caused by manually rotating the air gap of the speed sensor, and avoids the disadvantage of the cumulative error of the press-mounted sensor.

[0004] In this technical solution, the speed sensor is installed on the speed sensor seat by threaded connection, and the air gap of the speed sensor is adjusted by screwing. However, in actual use, under the action of bumps and vibrations, the speed sensor is easily loosened, thereby changing the air gap, which can be further improved. Summary of the invention

[0005] In order to solve the problems existing in the background technology, the utility model proposes a rotation speed sensor installation structure.

[0006] A speed sensor mounting structure comprises a speed sensor body and a mounting seat, wherein a sleeve is fixedly passed through the mounting seat, a embedding groove is provided at the top of the sleeve, a receiving groove is provided on the bottom wall of the embedding groove, a threaded groove is provided in the lower half of the sleeve, a threaded portion is provided in the middle of the speed sensor body, and the speed sensor body is threadedly connected to the threaded groove through the threaded portion; two groups of annular flanges are fixedly mounted on the surface of the speed sensor body, a rotating tube is sleeved on the outer side of the speed sensor body, two groups of friction strips are fixedly mounted on the circumferential surface of the rotating tube, and four groups of elastic steel sheets are fixedly mounted inside the speed sensor body, and the elastic steel sheets are clamped on both sides of the friction strips in pairs.

[0007] Based on the above, two sets of first mounting grooves are provided on the side wall of the receiving groove of the sleeve. An insertion opening is provided on the bottom wall of the embedding groove of the sleeve, and the insertion opening is communicated with the first mounting groove. Second mounting grooves are provided on the left and right side walls of the sleeve in the first mounting groove. Partition plates are fixedly mounted on the left and right side walls of the first mounting groove, and the partition plates are used to separate the first mounting groove from the second mounting groove. The top end of the elastic steel sheet is arc-shaped, and the elastic steel sheet is fixed on the surface of the partition plate through its arc-shaped end. The friction strip passes through the insertion opening and is inserted between the two elastic steel sheets.

[0008] Based on the above, teeth are arranged in an array along the length direction on both sides of the friction strip. The cross section of the teeth is an isosceles triangle. A plurality of convex strips are fixedly mounted on the opposite sides of the two elastic steel sheets on the same side, and the convex strips are abutted between two adjacent teeth.

[0009] Based on the above, a sliding groove is provided through the surface of the partition plate. The first mounting groove and the second mounting groove are communicated through the sliding groove. A sliding piece is fixedly mounted on the side of the bottom end of the elastic steel sheet close to the partition plate, and the sliding piece is inserted into the sliding groove. A blocking member is arranged in the second mounting groove, and the blocking member abuts against the free end of the sliding piece.

[0010] Based on the above, the blocking member includes a lug fixedly mounted on the side of the partition plate away from the elastic steel sheet. A sliding rod is slidably connected through the center of the lug. A trapezoidal block is fixedly mounted at the bottom end of the sliding rod. The side of the trapezoidal block facing the sliding piece is an inclined surface, and the sliding piece abuts against the inclined surface of the trapezoidal block. A fixing ring is fixedly mounted on the surface of the upper half of the sliding rod, and a spring is fixedly mounted between the fixing ring and the lug. The spring is sleeved outside the sliding rod. A through hole is provided on the bottom wall of the embedding groove of the sleeve, and the through hole is communicated with the second mounting groove. The sliding rod is slidably connected through the through hole. A pressing ring is fixedly mounted on the circumferential surface of the rotation speed sensor body, and the pressing ring abuts against the top of the sliding rod.

[0011] Based on the above, the free end of the sliding piece is an arc-shaped surface.

[0012] Based on the above, the top end of the sliding rod is hemispherical, and the diameter of the pressing ring is equal to the inner diameter of the embedding groove.

[0013] The utility model has substantial characteristics and progress compared with the prior art. Specifically, the rotating tube and the friction strip of the utility model can rotate relative to the rotation speed sensor body and move up and down following the rotation speed sensor body. When the rotation speed sensor body is threadedly connected inside the sleeve, the two elastic steel sheets clamp on both sides of the friction strip, and the convex strips are stuck between two adjacent teeth, thereby inhibiting the up and down movement of the friction strip, and further preventing the connection between the rotation speed sensor body and the sleeve from loosening under the action of vibration. It has the advantages of convenient installation and stable installation effect. Description of the Drawings

[0014] Figure 1 It is a three-dimensional structure schematic diagram of the present utility model.

[0015] Figure 2 It is a three-dimensional sectional structure schematic diagram of the present utility model.

[0016] Figure 3 It is a three-dimensional sectional structure schematic diagram of the sleeve of the present utility model.

[0017] Figure 4 It is a three-dimensional structure schematic diagram of the rotation speed sensor body of the present utility model.

[0018] Figure 5 It is a three-dimensional structure schematic diagram of the friction strip and the elastic steel sheet of the present utility model.

[0019] Explanation of reference numerals: 1, rotation speed sensor body; 2, mounting seat; 3, sleeve; 4, rotating tube; 5, friction strip; 6, elastic steel sheet; 7, lug; 8, sliding rod; 9, trapezoidal block; 10, fixing ring; 11, spring; 101, threaded portion; 102, annular flange; 103, pressing ring; 301, embedding groove; 302, accommodating groove; 303, threaded groove; 304, first mounting groove; 305, socket; 306, second mounting groove; 307, partition; 308, through hole; 309, sliding groove; 501, engaging teeth; 601, rib; 602, sliding piece. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0021] As Figures 1 - 5 shown, a rotation speed sensor mounting structure includes a rotation speed sensor body 1 and a mounting seat 2. A sleeve 3 is fixedly penetrated inside the mounting seat 2. An embedding groove 301 is opened at the top of the sleeve 3. A accommodating groove 302 is opened at the bottom wall of the sleeve 3 located in the embedding groove 301. A threaded groove 303 is opened in the lower half of the sleeve 3. A threaded portion 101 is provided in the middle of the rotation speed sensor body 1. The rotation speed sensor body 1 is threadedly connected to the threaded groove 303 through the threaded portion 101. Two groups of annular flanges 102 are fixedly installed on the surface of the rotation speed sensor body 1. A rotating tube 4 is sleeved outside the rotation speed sensor body 1. The outer diameter of the annular flange 102 is equal to the outer diameter of the rotating tube 4, and the outer diameter of the rotating tube 4 is equal to the aperture of the accommodating groove 302. Two groups of friction strips 5 are fixedly installed on the circumferential surface of the rotating tube 4. Four groups of elastic steel sheets 6 are fixedly installed inside the rotation speed sensor body 1. The elastic steel sheets 6 are clamped on both sides of the friction strip 5 in pairs.

[0022] When the rotation speed sensor body 1 is installed inside the sleeve 3 by screwing, the friction strip 5 is inserted between the two elastic steel sheets 6. The two elastic steel sheets 6 inhibit the assembly of the rotating tube 4 and the friction strip 5 from rotating synchronously with the rotation speed sensor body 1, so that the rotating tube 4 and the friction strip 5 only move downward following the rotation speed sensor body 1. Thus, as the rotation speed sensor body 1 is screwed, the friction strip 5 gradually moves downward. Due to the elasticity of the elastic steel sheets 6, the two elastic steel sheets 6 closely adhere to the surface of the friction strip 5. Through the frictional force of the elastic steel sheets 6 on the friction strip 5, the up and down movement of the friction strip 5 is inhibited. Thereby, the connection between the rotation speed sensor body 1 and the sleeve 3 is prevented from loosening under the action of vibration.

[0023] In use, two groups of first mounting grooves 304 are provided on the side wall of the receiving groove 302 of the sleeve 3, and a socket 305 is provided on the bottom wall of the embedding groove 301 of the sleeve 3. The socket 305 communicates with the first mounting grooves 304; second mounting grooves 306 are provided on the left and right side walls of the first mounting grooves 304 of the sleeve 3, and partition plates 307 are fixedly installed on the left and right side walls of the first mounting grooves 304. The partition plates 307 are used to separate the first mounting grooves 304 from the second mounting grooves 306. The top end of the elastic steel sheet 6 is arc-shaped, and the elastic steel sheet 6 is fixed on the surface of the partition plate 307 through its arc-shaped end. The friction strip 5 passes through the socket 305 and is inserted between the two elastic steel sheets 6. Thus, the distance between the top ends of the two elastic steel sheets 6 is relatively large, facilitating the insertion of the friction strip 5 therein.

[0024] Specifically, teeth 501 are arranged in an array along the length direction on both sides of the friction strip 5. The cross-section of the teeth 501 is an isosceles triangle, and a plurality of ridges 601 are fixedly installed on the opposite sides of the two elastic steel sheets 6 on the same side. The ridges 601 abut between two adjacent teeth 501. Thus, when the friction strip 5 is inserted between the two elastic steel sheets 6, the ridges 601 will be stuck between two adjacent teeth 501, further inhibiting the up and down movement of the friction strip 5 relative to the elastic steel sheets 6.

[0025] In reality, a sliding groove 309 is provided through the surface of the partition plate 307. The first mounting grooves 304 and the second mounting grooves 306 communicate through the sliding groove 309. A sliding piece 602 is fixedly installed on the side of the bottom end of the elastic steel sheet 6 close to the partition plate 307. The sliding piece 602 is inserted into the sliding groove 309, and a blocking member is arranged in the second mounting groove 306. The blocking member abuts on the free end of the sliding piece 602. Through the blocking action of the blocking member on the sliding piece 602, the bottom end of the elastic steel sheet 6 is inhibited from approaching the partition plate 307, thereby ensuring the clamping force of the bottom end of the elastic steel sheet 6 on the friction strip 5.

[0026] The blocking member includes a lug 7 fixedly installed on the side of the partition plate 307 away from the elastic steel sheet 6. A slide rod 8 is slidably connected through the center of the lug 7. A trapezoidal block 9 is fixedly installed at the bottom end of the slide rod 8. The trapezoidal block 9 is slidably connected in the second installation groove 306. The side of the trapezoidal block 9 facing the sliding piece 602 is an inclined surface. The sliding piece 602 abuts against the inclined surface of the trapezoidal block 9. The free end of the sliding piece 602 is an arc surface. Thus, when the trapezoidal block 9 moves up and down, the sliding piece 602 can be pushed to move along the sliding groove 309.

[0027] A fixing ring 10 is fixedly installed on the surface of the upper half of the slide rod 8. A spring 11 is fixedly installed between the fixing ring 10 and the lug 7. The spring 11 is sleeved outside the slide rod 8. Due to the elasticity of the spring 11, the slide rod 8 and the trapezoidal block 9 have a tendency to move upward. A through hole 308 is opened at the bottom wall of the embedding groove 301 of the sleeve 3. The through hole 308 is communicated with the second installation groove 306. The slide rod 8 is slidably connected through the through hole 308. A pressing ring 103 is fixedly installed on the circumferential surface of the rotation speed sensor body 1. The pressing ring 103 abuts against the top of the slide rod 8. The top end of the slide rod 8 is hemispherical. The diameter of the pressing ring 103 is equal to the inner diameter of the embedding groove 301. Thus, by screwing the rotation speed sensor body 1, the pressing ring 103 rotates and inserts into the embedding groove 301, and pushes the slide rod 8 downward, driving the trapezoidal block 9 to move downward. The trapezoidal block 9 pushes the sliding piece 602 through its inclined surface, so that the bottom end of the elastic steel sheet 6 approaches the friction strip 5, thereby increasing the force of the convex strip 601 clamping on both sides of the friction strip 5 and further inhibiting the up and down movement of the friction strip 5.

[0028] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A rotational speed sensor mounting structure, characterized in that: It includes a rotational speed sensor body and a mounting base. A sleeve is fixedly penetrated through the interior of the mounting base. An embedding groove is formed at the top of the sleeve. A receiving groove is formed at the bottom wall of the embedding groove of the sleeve. A threaded groove is formed in the lower half of the sleeve. A threaded portion is provided in the middle of the rotational speed sensor body. The rotational speed sensor body is threadedly connected to the threaded groove through the threaded portion; Two groups of annular flanges are fixedly installed on the surface of the rotational speed sensor body. A rotating tube is sleeved outside the rotational speed sensor body. Two groups of friction strips are fixedly installed on the circumferential surface of the rotating tube. Four groups of elastic steel sheets are fixedly installed inside the rotational speed sensor body. The elastic steel sheets are clamped on both sides of the friction strips in pairs.

2. The rotational speed sensor mounting structure according to claim 1, characterized in that: Two groups of mounting grooves 1 are formed in the side wall of the receiving groove of the sleeve. An insertion opening is formed at the bottom wall of the embedding groove of the sleeve. The insertion opening communicates with the mounting groove 1; Two groups of mounting grooves 2 are formed on the left and right side walls of the sleeve in the mounting groove 1. Partition plates are fixedly installed on the left and right side walls of the mounting groove 1. The partition plates are used to separate the mounting groove 1 from the mounting groove 2; The top end of the elastic steel sheet is arc-shaped. The elastic steel sheet is fixed on the surface of the partition plate through its arc-shaped end. The friction strip passes through the insertion opening and is inserted between the two groups of elastic steel sheets.

3. The rotational speed sensor mounting structure according to claim 2, characterized in that: A plurality of teeth are arranged in an array along the length direction on both sides of the friction strip. The cross-section of the tooth is an isosceles triangle. A plurality of protrusions are fixedly installed on the opposite side of the two groups of elastic steel sheets on the same side. The protrusions abut between two adjacent teeth.

4. The rotational speed sensor mounting structure according to claim 2, wherein: A sliding groove is formed through the surface of the partition plate. The mounting groove 1 and the mounting groove 2 are communicated through the sliding groove. A sliding piece is fixedly installed on the side of the bottom end of the elastic steel sheet close to the partition plate. The sliding piece is inserted into the sliding groove. A blocking member is arranged in the mounting groove 2. The blocking member abuts against the free end of the sliding piece.

5. The rotational speed sensor mounting structure according to claim 4, wherein: The blocking member includes a lug fixedly installed on the side of the partition plate away from the elastic steel sheet. A sliding rod is slidably connected through the center of the lug. A trapezoidal block is fixedly installed at the bottom end of the sliding rod. The side of the trapezoidal block facing the sliding piece is an inclined surface. The sliding piece abuts against the inclined surface of the trapezoidal block. A fixing ring is fixedly installed on the surface of the upper half of the sliding rod. A spring is fixedly installed between the fixing ring and the lug. The spring is sleeved outside the sliding rod. A through hole is formed at the bottom wall of the embedding groove of the sleeve. The through hole communicates with the mounting groove 2. The sliding rod is slidably connected through the through hole. A pressing ring is fixedly installed on the circumferential surface of the rotational speed sensor body. The pressing ring abuts against the top of the sliding rod.

6. The rotational speed sensor mounting structure according to claim 5, characterized in that: The free end of the sliding piece is an arc-shaped surface.

7. The rotational speed sensor mounting structure according to claim 5, wherein: The top end of the sliding rod is hemispherical. The diameter of the pressing ring is equal to the inner diameter of the embedding groove.

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