Hall sensing clamping structure

Abstract

A Hall sensing clamping structure disclosed by the present invention comprises a valve body and a clamping piece, the clamping piece comprises a clamping seat, a first holding arm and a second holding arm, the first holding arm and the second holding arm are both integrally connected with the clamping seat, and a clamping space is formed among the first holding arm, the second holding arm and the clamping seat. The first holding arm and the second holding arm can be elastically deformed; part of the valve body is clamped into the clamping space, and the first holding arm and the second holding arm elastically abut against the valve body; and the first holding arm and the second holding arm are clamped and fixed with the valve body. The device is reasonable in design, simple and reliable in structure and convenient to disassemble and assemble.

Description

Technical Field

[0001] The present invention relates to the technical field of flow detection, and more specifically, to a Hall induction clamping structure. Background Art

[0002] Some valve bodies have the function of flow detection, which is achieved through the mutual induction between the rotor inside the valve body and the Hall sensor. The blades of the rotor are magnetic, and the Hall sensor is fixed to the outside of the valve body. When the fluid flows through the valve body, it will drive the rotor to rotate, and the blades of the rotor will produce rotational alternating induction relative to the Hall sensor, thereby obtaining the flow information in the valve body. In the current related products, the assembly structure of the Hall sensor and the valve body needs to be improved. Summary of the invention

[0003] The object of the present invention is to solve the above problems and to provide a Hall-effect sensing card connection structure, which has reasonable design, simple and reliable structure and convenient assembly and disassembly.

[0004] The above technical purpose of the present invention is achieved through the following technical solutions: a Hall-sensing clamping structure, including a valve body and a clamping part, the clamping part includes a clamping seat, a first arm and a second arm, the first arm and the second arm are integrally connected to the clamping seat, a clamping space is formed between the first arm, the second arm and the clamping seat, the first arm and the second arm can be elastically deformed; part of the valve body is clamped into the clamping space, the first arm, the second arm are elastically abutted against the valve body; the first arm, the second arm are clamped and fixed to the valve body.

[0005] In this solution, the clamping part and the valve body are connected by a combination of a snap and an arm type, which is easy to install, can maintain the stability of the connection structure, and is tight and not easy to fall off. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 This is a schematic diagram of the structure of a Hall-sensing snap-in structure in this embodiment;

[0007] Figure 2 is a cross-sectional view of a Hall-sensing clamping structure in this embodiment;

[0008] Figure 3 Schematic diagram of the structure of the valve body in this embodiment;

[0009] Figure 4 is a cross-sectional view of the valve body in this embodiment;

[0010] Figure 5 The structure of the clamping member in this embodiment is schematically shown in FIG. Figure 1 ;

[0011] Figure 6The structure of the clamping member in this embodiment is schematically shown in FIG. Figure 2 .

[0012] Figure numerals: 1. clamping part; 2. clamping seat; 21. third limiting surface; 3. first arm; 31. first limiting surface; 32. first clamping part; 320. first clamping hole; 4. second arm; 41. second limiting surface; 42. second clamping part; 420. second clamping hole; 5. clamping space; 6. valve body; 61. third clamping part; 610. first clamping protrusion; 611. first clamping surface; 612. first transition surface; 62. fourth clamping part; 620. second clamping protrusion; 621. second clamping surface; 622. second transition surface; 63. annular protrusion; 7. first section; 8. second section. DETAILED DESCRIPTION

[0013] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0014] This embodiment discloses a Hall-effect sensing card connection structure. Figure 1-6 As shown, it plays the role of connecting the Hall sensor device with the valve body 6; the clamping member 1 includes a clamping seat 2, a first arm 3 and a second arm 4. The Hall sensor device is installed in the clamping seat 2, and generates mutual induction with the magnetic rotor in the valve body 6 to realize parameter detection in the valve body 6. The clamping seat 2 is connected with the first arm 3 and the second arm 4. The two arms and the clamping seat 2 are integrally injection molded, and the arms have a certain elasticity and can produce elastic deformation. The clamping seat 2 is connected to the valve body 6 through the first arm 3 and the second arm 4.

[0015] The first arm 3 has a first clamping portion 32, the second arm 4 has a second clamping portion 42, and a third clamping portion 61 and a fourth clamping portion 62 are formed outside the valve body 6. During installation, the first clamping portion 32 is clamped with the third clamping portion 61, and the second clamping portion 42 is clamped with the fourth clamping portion 62, thereby forming at least two clamping points between the valve body 6 and the clamping member 1. The clamping member 1 can maintain stable clamping between the clamping member 1 and the valve body 6 by combining embracing and clamping, and can facilitate the disassembly of the clamping member 1 and the valve body 6.

[0016] Reference Figure 2As shown, a clamping structure is formed between the clamping seat 2 and the arm. A first clamping hole 320 is provided at the first arm 3 as the first clamping portion 32; a second clamping hole 420 is provided at the second arm 4 as the second clamping portion 42. A first clamping protrusion 610 and a second clamping protrusion 620 are formed on the periphery of the valve body 6, and the first clamping protrusion 610 and the second clamping protrusion 620 are used as the third clamping portion 61 and the fourth clamping portion 62 of the periphery of the valve body 6.

[0017] When the clamping seat 2 is installed, the first clamping protrusion 610 can be clamped into the first clamping hole 320; the second clamping protrusion 620 can be clamped into the second clamping hole 420, forming two sets of clamping structures between the clamping component 1 and the valve body 6, which can keep the clamping component 1 and the valve body 6 fixed.

[0018] The first clamping protrusion 610 and the second clamping protrusion 620 are symmetrically distributed, which can limit the position of the clamping component 1 from two directions, and can limit the radial displacement movement of the clamping component 1, thereby realizing the axial and radial movement restriction of the clamping component 1 and the valve body 6, and maintaining the stable connection between the Hall sensor and the valve body 6.

[0019] Reference Figure 5 , 6 As shown, along the circumferential direction of the valve body 6, the surfaces of the first clamping protrusion 610 and the second clamping protrusion 620 are both formed with arc-shaped transition surfaces, a first transition surface 612 is formed on the first clamping protrusion 610, and a second transition surface 622 is formed on the second clamping protrusion 620. At the transition surface, the protrusion heights of the first clamping protrusion 610 and the second clamping protrusion 620 gradually decrease toward the clamping seat 2, and the first arm 3 and the second arm 4 can be expanded and guided by the guiding arc surface, so that when the clamping member 1 is clamped with the valve body 6, the action is smoother.

[0020] Reference Figure 3 As shown, the first clamping protrusion 610 includes a first clamping surface 611, and the first clamping surface 611 is facing away from the clamping seat 2; the second clamping protrusion 620 includes a second clamping surface 621, and the second clamping surface 621 is facing away from the clamping seat 2; the first clamping surface 611 and the second clamping surface 621 are in opposite directions and are symmetrical. When the first clamping protrusion 610 is clamped into the first clamping hole 320, the first clamping surface 611 can abut against the inner circumference of the first clamping hole 320; when the second clamping protrusion 620 is clamped into the second clamping hole 420, the second clamping surface 621 can abut against the inner circumference of the second clamping hole 420, forming two pressing limit points in the circumferential direction, thereby maintaining the clamping stability between the clamping member 1 and the valve body 6, and realizing circumferential rotation limit.

[0021] Along the axial direction of the valve body 6, the first clamping protrusion 610 and the second clamping protrusion 620 outside the valve body 6 both have a certain axial width, and the first clamping hole 320 and the second clamping hole 420 also have a certain axial width. The axial width of the first clamping protrusion 610 is adapted to the axial width of the first clamping hole 320, and the first clamping protrusion 610 is clamped into the first clamping hole 320, which can achieve axial limitation of the clamping member 1 and the valve body 6. The axial width of the second clamping protrusion 620 is adapted to the axial width of the second clamping hole 420, and the second clamping protrusion 620 is clamped into the second clamping hole 420, which can achieve axial limitation of the clamping member 1 and the valve body 6. Through mutual clamping, the clamping member 1 and the valve body 6 can be limited, and the axial and radial displacements can be effectively limited.

[0022] The clamping seat 2, the first arm 3 and the second arm 4 are integrally connected, and a semi-annular clamping space 5 is formed between the clamping seat 2, the first arm 3 and the second arm 4, and the clamping space 5 has a bayonet. The outer periphery of the valve body 6 is at least partially embedded in the clamping space 5, and a certain clamping and fixing effect is achieved through the elastic pressure between the arm and the outer periphery of the valve body 6.

[0023] In order to maintain the installation stability of the clamping member 1, the shape contours of the clamping seat 2, the first arm 3 and the second arm 4 are all adapted to the corresponding positions of the valve body 6. Among them, the first arm 3 has a first limit surface 31, the shape of the first limit surface 31 is adapted to the shape of the valve body 6, and the first limit surface 31 is against the valve body 6; the second arm 4 has a second limit surface 41, the shape of the second limit surface 41 is adapted to the shape of the valve body 6, and the second limit surface 41 is against the valve body 6.

[0024] In addition, the clamping seat 2 also abuts against the valve body 6, and the clamping seat 2 has a third limit surface 21, the shape of the third limit surface 21 is adapted to the shape of the valve body 6, and the third limit surface 21 abuts against the valve body 6. When the clamping member 1 is connected to the valve body 6, three abutting positions are formed on the periphery of the valve body 6 by the clamping seat 2, the first arm 3 and the second arm 4.

[0025] Specifically, part of the outer circumference of the valve body 6 is roughly in an arc shape. The first limiting surface 31, the second limiting surface 41 and the third limiting surface 21 are all in an arc shape adapted to the valve body 6, and the connection stability between the two arms and the valve body 6 can be improved by pressing the arc surfaces against each other.

[0026] When the clamping part 1 is connected to the valve body 6, the arc of the valve body 6 is inserted into the clamping space 5, and the clamping part 1 and the valve body 6 are fixed through a smooth fitting surface, which can improve the stability of clamping and also play a coaxial centering role during environmental protection clamping.

[0027] In order to ensure that the clamping component 1 can stably clamp the valve body 6, the ends of the first arm 3 and the second arm 4 must pass over the center of the valve body 6, so that the arc of the valve body 6 embraced by the first arm 3, the second arm 4 and the clamping seat 2 exceeds 180°, thereby improving the connection stability between the clamping component 1 and the valve body 6.

[0028] For the clamping seat 2, the diameter of the third limiting surface 21 of the clamping seat 2 is slightly larger than the diameter of the outer circular arc surface of the valve body 6, so that the valve body 6 can fit against the third limiting surface 21, so that the third limiting surface 21 and the surface of the valve body 6 can press against each other, forming a stable pressing state.

[0029] The first arm 3 and the second arm 4 can produce a certain elastic deformation, and can press against the arc surface outside the valve body 6 through the elastic deformation of the arm. The diameter of the first limit surface 31 and the second limit surface 41 is slightly smaller than the diameter of the outer arc surface of the valve body 6. When the clamping member 1 is clamped and assembled with the valve body 6, the first arm 3 and the second arm 4 will produce elastic deformation, so that the first arm 3 and the second arm 4 can produce a small expansion, and the first limit surface 31 and the second limit surface 41 can also form a certain expansion, so that the first limit surface 31 and the second limit surface 41 can also press against the surface of the valve body 6 stably.

[0030] Reference Figure 4 As shown, both the first arm 3 and the second arm 4 can adopt a two-stage structure, and the first arm 3 and the second arm 4 are symmetrical structures. Taking the first arm 3 as an example, the first arm 3 includes a first section 7 and a second section 8, wherein the first section 7 is closer to the clamping seat 2, is directly connected to the clamping seat 2, and mainly provides elastic force; the second section 8 is farther away from the clamping seat 2, forms a suspended state, and mainly plays a role of elastically pressing against the valve body 6.

[0031] The first limiting surface 31 of the first arm 3 is located on the side of the second section 8 facing the clamping space 5, that is, when the first arm 3 is engaged with the valve body 6, it is mainly elastically pressed by the first section 7 of the first arm 3 and the valve body 6, and the two arms form a clamp-like structure, which is clamped outside the valve body 6.

[0032] Among them, the first section 7 is mainly used to provide elastic force and a small amount of displacement to compensate for the dimensional tolerance between the clamping member 1 and the valve body 6, so that the clamping member 1 can be more smoothly engaged with the valve body 6. The first section 7 is generally connected in an arc shape, gradually narrowing toward the second section 8, and an arc-shaped depression is formed on the side of the first section 7 facing the clamping space 5. When the clamping member 1 and the valve body 6 are engaged, a gap is formed between the arc-shaped depression and the arc convex surface of the valve body 6, and the first section 7 can generate a small elasticity at the position of the gap, thereby compensating for the dimensional tolerance between the arm and the valve body 6.

[0033] In order to improve the axial stability between the clamping member 1 and the valve body 6, axial limiting can be performed between the clamping member 1 and the valve body 6. A first axial abutment portion is provided on the outer periphery of the valve body 6, and the clamping member 1 includes a second axial abutment portion 11, and the first axial abutment portion and the second axial abutment portion abut against each other to achieve axial limiting.

[0034] Reference Figure 1 , 5 As shown, the first axial abutment portion can be an annular protrusion 63, which is integrally connected to the outer periphery of the valve body 6. The end face of the clamp 1 facing the annular protrusion serves as the second axial abutment portion. During installation, the end face of the clamp 1 axially abuts against the annular protrusion, which plays a role in axially limiting the clamp 1. Alternatively, an annular groove can be formed on the outer periphery of the valve body 6, and an annular protrusion can be provided on the side of the arm facing the clamping space 5. When the clamp 1 is installed, the matching of the annular protrusion and the annular groove can also achieve axial limiting of the clamp 1.

[0035] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A Hall-effect sensing card connection structure, characterized in that: The invention comprises a valve body (6) and a clamping member (1), wherein the clamping member (1) comprises a clamping seat (2), a first arm (3) and a second arm (4), wherein the first arm (3) and the second arm (4) are integrally connected to the clamping seat (2), a clamping space (5) is formed between the first arm (3), the second arm (4) and the clamping seat (2), and the first arm (3) and the second arm (4) are elastically deformable; a portion of the valve body (6) is clamped into the clamping space (5), and the first arm (3), the second arm (4) and the valve body (6) are elastically abutted against each other; and the first arm (3), the second arm (4) and the valve body (6) are clamped and fixed.

2. The Hall-effect sensing card connection structure according to claim 1, characterized in that: The first arm (3) comprises a first limiting surface (31), the shape of which is adapted to the shape of the valve body (6), and the first limiting surface (31) abuts against the valve body (6); the second arm (4) comprises a second limiting surface (41), the shape of which is adapted to the shape of the valve body (6), and the second limiting surface (41) abuts against the valve body (6).

3. The Hall-effect sensing card connection structure according to claim 1, characterized in that: The clamping seat (2) comprises a third limiting surface (21), the shape of the third limiting surface (21) is adapted to the shape of the valve body (6), and the third limiting surface (21) abuts against the valve body (6).

4. The Hall-effect sensing card connection structure according to claim 1, characterized in that: The first arm (3) includes a first clamping portion (32), the second arm (4) includes a second clamping portion (42), and the valve body (6) is provided with a third clamping portion (61) and a fourth clamping portion (62); the first clamping portion (32) is clamped with the third clamping portion (61), and the second clamping portion (42) is clamped with the fourth clamping portion (62).

5. The Hall-effect sensing card connection structure according to claim 4, characterized in that: The first clamping portion (32) is a first clamping hole (320), the third clamping portion (61) is a first clamping protrusion (610), and the first clamping protrusion (610) is clamped into the first clamping hole (320); the second clamping portion (42) is a second clamping hole (420), the fourth clamping portion (62) is a second clamping protrusion (620), and the second clamping protrusion (620) is clamped into the second clamping hole (420).

6. The Hall-effect sensing card connection structure according to claim 5, characterized in that: The first clamping protrusion (610) includes a first clamping surface (611), and the second clamping protrusion (620) includes a second clamping surface (621); the first clamping surface (611) and the second clamping surface (621) are both facing away from the clamping seat (2); the first clamping surface (611) abuts against the inner circumference of the first clamping hole (320), and the second clamping surface (621) abuts against the inner circumference of the second clamping hole (420).

7. The Hall-effect sensing card connection structure according to claim 5, characterized in that: The protruding heights of the first clamping protrusion (610) and the second clamping protrusion (620) gradually decrease towards the clamping seat (2).

8. The Hall-effect sensing card connection structure according to claim 5, characterized in that: The axial width of the first clamping protrusion (610) is adapted to the axial width of the first clamping hole (320); and the axial width of the second clamping protrusion (620) is adapted to the axial width of the second clamping hole (420).

9. The Hall-effect sensing card connection structure according to claim 1, characterized in that: The outer periphery of the valve body (6) is provided with a first axial abutment portion, and the clamping member (1) includes a second axial abutment portion, and the first axial abutment portion abuts against the second axial abutment portion to achieve axial limiting.

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