Novel Hall type phase sensor

Abstract

The utility model relates to the technical field of automobile engine fittings, and discloses a novel Hall type phase sensor, which comprises a magnet bin, a power connection head and a screw fixing head, the power connection head and the screw fixing head are arranged on the peripheral wall of the magnet bin, and the screw fixing head is provided with a vertically-through circular through hole. The inner circumferential wall of the circular through hole is provided with a concave annular space for installing a rotating sleeve, the inner circumferential wall of the rotating sleeve is provided with a vertical moving groove, the outer circumferential wall of the rotating sleeve is provided with a threaded head with a moving block and installed in the rotating sleeve in a penetrating mode, a transmission ring is arranged in the outer circumferential wall of the magnet bin, and the rotating sleeve is in transmission connection with the transmission ring through a transmission belt. A transmission vertical rod is arranged in the peripheral wall of the magnet bin, the transmission vertical rod is in transmission connection with the threaded cross rod, a linkage piece in threaded fit with the threaded cross rod is arranged outside the magnet bin, and the linkage piece can be installed on a vehicle power connection head screw in a matched mode.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile engine accessories, in particular to a novel Hall-type phase sensor. Background Art

[0002] During the operation of the engine, there is a Hall-type phase sensor, which is used to detect the engine valve timing phase. During the actual operation of the engine, the sensor for detecting the engine valve timing phase requires a small change in the air gap between the probe and the signal. The back magnet material used in the existing Hall-type phase sensor is SmCo, which has a strong surface magnetism. Under the same air gap change, the magnetic flux change ΔB is relatively large. When the change in ΔB between the teeth of the same signal wheel exceeds the threshold, a signal loss problem will occur.

[0003] At the same time, Hall-type phase sensors are usually installed in the narrow space of the engine compartment. Except for long-handled tools such as screwdrivers that can easily enter the engine compartment, other tools with larger diameters and that need to be opened, such as tweezers and wrenches, are difficult to stretch and use in the engine compartment. When installing and disassembling the Hall-type phase sensor, an external power plug needs to be installed horizontally with a lock. Due to the space limitation of the engine compartment, the horizontal electrical installation of the sensor is very difficult. Summary of the invention

[0004] In order to solve the problems mentioned in the above background technology, the utility model provides a novel Hall-type phase sensor.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A novel Hall-type phase sensor comprises a magnet bin, an electrical connection head and a screw fixing head, wherein the electrical connection head and the screw fixing head are installed on the outer peripheral wall of the magnet bin, the screw fixing head has a circular through hole running through from top to bottom, the inner peripheral wall of the circular through hole has a concave annular space for installing a rotating sleeve, the inner peripheral wall of the rotating sleeve has a vertical moving groove, the outer peripheral wall has a threaded head with a moving block passing through and installed in the rotating sleeve, a transmission ring is arranged inside the outer peripheral wall of the magnet bin, and the rotating sleeve and the transmission ring are connected by a transmission belt;

[0007] A transmission vertical rod is arranged inside the outer peripheral wall of the magnet bin, and the transmission vertical rod is transmission-connected with the threaded cross bar. A linkage piece that matches with the threaded cross bar is arranged outside the magnet bin, and the linkage piece can be installed in conjunction with the vehicle connector screw.

[0008] Preferably, the interior of the magnet bin is hollow and is installed with a special-shaped magnet, the back magnet material of the special-shaped magnet is NdFeB, and the surface of the special-shaped magnet has a special-shaped groove for limiting the installation of the Hall chip so that the Hall chip can be in the zero magnetic field of the special-shaped magnet.

[0009] Preferably, the vertical position of the rotating sleeve is restricted from disengaging from the screw fixing head and can rotate freely axially within the circular perforation. The belt moving block can only move vertically within the vertical moving groove, and the top of the vertical moving groove has a blocking portion to prevent the belt moving block from moving upward.

[0010] Preferably, the transmission vertical rod is installed in a vertical cavity within the outer peripheral wall of the magnet chamber and communicating with the chamber provided in the transmission ring. Bevel gears and spur gears are respectively installed at both ends of the transmission vertical rod. The spur gear installed at the lower end meshes with the teeth provided on the inner ring of the transmission ring, and the bevel gear installed at the upper end meshes with the bevel gear at the end of the threaded cross bar to complete the transmission.

[0011] Preferably, an assisting cylinder is provided outside the magnet chamber. The outer peripheral wall of the assisting cylinder has a limiting protruding groove opening towards the electrical connection head, and the threaded cross bar is arranged within the assisting cylinder.

[0012] Preferably, the linkage member includes a wrapping ring arranged within the assisting cylinder and a connecting plate connected to the wrapping ring and arranged outside the assisting cylinder. The wrapping ring surrounds the threaded cross bar within the assisting cylinder and is in threaded cooperation with the threaded cross bar.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] With the present utility model, when the user installs the screw fixing head using a screwdriver, the vehicle electrical connection head can be synchronously driven to be pulled towards the direction close to the magnet chamber until the docking installation is completed through the transmission of the rotating sleeve, transmission belt, transmission ring, transmission vertical rod, and threaded cross bar, which is convenient, fast, and the installation is stable and firm. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is a schematic structural diagram of a novel Hall type phase sensor according to the present utility model;

[0017] Figure 2 It is a schematic diagram of the cooperation of the internal transmission structure of the magnet chamber and the screw fixing head according to the present utility model;

[0018] Figure 3 It is a schematic structural diagram of a novel Hall type phase sensor in another viewing state according to the present utility model;

[0019] Figure 4 For Figure 3 the enlarged structural diagram at A in

[0020] In the figure: 1. Magnet chamber; 11. Special-shaped magnet; 12. Hall chip; 13. Transmission ring; 14. Transmission belt; 15. Transmission vertical rod; 16. Threaded cross bar; 2. Power connection head; 3. Screw fixing head; 301. Vertical movement groove; 31. Rotating sleeve; 32. Belt moving block; 33. Threaded head; 4. Assistance cylinder; 401. Limit protruding groove; 5. Linkage part; 51. Wrapping ring; 52. Connecting plate; 600. Vehicle power connection head. Specific implementation mode

[0021] To make the purposes, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. 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. Embodiment 1

[0022] Refer to Figures 1-4 , a new type of Hall phase sensor, including a magnet chamber 1, a power connection head 2 and a screw fixing head 3. The power connection head 2 and the screw fixing head 3 are installed on the outer peripheral wall of the magnet chamber 1. A threaded head 33 is installed in the screw fixing head 3. The user can use a screwdriver to screw the threaded head 33 into the engine for installation, thereby installing and fixing the magnet chamber 1.

[0023] The inside of the magnet chamber 1 is hollow and a special-shaped magnet 11 is installed. The surface of the special-shaped magnet 11 has a special-shaped groove for restricting the installation of the Hall chip 12, so that the Hall chip 12 can be located at the zero magnetic field of the special-shaped magnet 11. When the ferromagnetic target wheel rotates, the rotation of the gear disturbs the magnetic field at the induction point. The Hall chip 12 gives a corresponding output according to the change of the magnetic field. The Hall chip 12 is electrically connected to the power connection head 2. After the power connection head 2 is electrically connected by docking with the vehicle power connection head 600, the output signal of the Hall chip 12 can be transmitted to the engine control system of the vehicle.

[0024] The back magnet material used for the special-shaped magnet 11 is NdFeB, and the surface magnetic intensity is less than that of SmCo. In the case of the same air gap change, the magnetic flux change amount ΔB is relatively small. Therefore, it can cope with a larger magnetic flux change between the teeth of the signal wheel, and also supports a larger air gap change amount, avoiding the problems of signal interference or loss of the camshaft phase sensor in the engine system. Embodiment 2

[0025] Refer to Figures 1-4The difference between this embodiment and embodiment 1 is that the screw fixing head 3 has a circular through-hole running through the upper and lower parts, and the inner peripheral wall of the circular through-hole has a concave annular space for installing the rotating sleeve 31. The vertical position of the rotating sleeve 31 is restricted and cannot be separated from the screw fixing head 3, and can freely rotate axially in the circular through-hole. The inner peripheral wall of the rotating sleeve 31 has a vertical movement groove 301, and the outer peripheral wall has a threaded head 33 with a shift block 32 installed in the rotating sleeve 31. The shift block 32 can only move vertically in the vertical movement groove 301, so that the threaded head 33 can drive the rotating sleeve 31 to rotate axially when being driven by a screwdriver. Preferably, the top of the vertical movement groove 301 has a blocking part for preventing the shift block 32 from moving upward, so as to prevent the threaded head 33 with a special structure of the shift block 32 from being lost after disassembly.

[0026] A transmission ring 13 is arranged inside the outer peripheral wall of the magnet warehouse 1, and the rotating sleeve 31 is connected to the transmission ring 13 through a transmission belt 14, so that the transmission ring 13 can rotate axially synchronously with the rotating sleeve 31. The outer peripheral wall of the magnet warehouse 1 also has a vertical chamber connected to the chamber provided with the transmission ring 13 to install a transmission vertical rod 15, and a helical gear and a flat gear are respectively installed at both ends of the transmission vertical rod 15. The flat gear installed at the lower end meshes with the teeth provided on the inner ring of the transmission ring 13, so that the transmission vertical rod 15 can rotate axially synchronously with the transmission ring 13, and the helical gear installed at the upper end meshes with the helical gear at the end of the threaded cross rod 16 to complete the transmission. The threaded cross rod 16 extends toward the setting direction of the electrical head 2 and is arranged in an auxiliary cylinder 4 fixed to the outside of the magnet warehouse 1. Embodiment 3

[0027] Reference Figures 1-4 The difference between this embodiment and embodiments 1 and 2 is that the outer wall of the assisting cylinder 4 has a limited protruding groove 401 open to the power connection head 2, so that the linkage member 5 arranged in the assisting cylinder 4 can be partially protruded and connected with the vehicle power connection head 600, and the linkage member 5 includes a wrapping ring 51 arranged in the assisting cylinder 4 and a connecting plate 52 connected to the wrapping ring 51 and arranged outside the assisting cylinder 4. The wrapping ring 51 surrounds the threaded cross bar 16 in the assisting cylinder 4 and is threadedly matched with the threaded cross bar 16, so that the threaded cross bar 16 can drive the linkage member 5 to move horizontally when the threaded cross bar 16 rotates axially.

[0028] When installing, the vehicle power connector 600 only needs to be sleeved on the edge of the power connector 2. The user uses screws to install the connecting plate 52 on the vehicle power connector 600. After that, when the user uses a screwdriver to rotate the threaded head 33, the linkage part 5 will move toward the magnet bin 1 under the various levels of transmission of the rotating sleeve 31, the transmission belt 14, the transmission ring 13, the transmission vertical rod 15 and the threaded cross rod 16, so as to pull the vehicle power connector 600 in the direction close to the magnet bin 1 until the docking installation is completed. It is convenient and fast, and the installation is stable and firm.

[0029] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0030] In the present utility model, unless otherwise clearly specified and defined, terms such as "arranged", "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0031] The control mode of the present utility model is automatically controlled by a controller. The control circuit of the controller can be realized by simple programming by those skilled in the art. The provision of power also belongs to the common knowledge in the art. And the present utility model is mainly used to protect mechanical devices, so the control mode and circuit connection of the present utility model will not be explained in detail.

[0032] The above is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent substitutions or changes, and should be covered by the protection scope of the present utility model.

Claims

1. A novel Hall-type phase sensor, comprising a magnet chamber (1), an electrical connection head (2) and a screw fixing head (3), wherein the electrical connection head (2) and the screw fixing head (3) are mounted on the outer peripheral wall of the magnet chamber (1), characterized in that: The screw fixing head (3) has a circular through hole extending upward and downward, the inner peripheral wall of the circular through hole has a concave annular space for mounting a rotating sleeve (31), the inner peripheral wall of the rotating sleeve (31) has a vertical moving groove (301), the outer peripheral wall has a threaded head (33) with a moving block (32) which penetrates and is mounted in the rotating sleeve (31), the outer peripheral wall of the magnet bin (1) is provided with a transmission ring (13), and the rotating sleeve (31) and the transmission ring (13) are connected to each other by a transmission belt (14); A transmission vertical rod (15) is arranged inside the outer peripheral wall of the magnet bin (1), and the transmission vertical rod (15) is transmission-connected to the threaded cross rod (16). A linkage member (5) threadably matched with the threaded cross rod (16) is arranged outside the magnet bin (1), and the linkage member (5) can be screw-matched with the vehicle connecting head (600) for installation.

2. A novel Hall-type phase sensor according to claim 1, characterized in that: The magnet bin (1) is hollow inside and is installed with a special-shaped magnet (11). The special-shaped magnet (11) uses a back magnet material of NdFeB. The surface of the special-shaped magnet (11) has a mounting groove for limiting the installation of a Hall chip (12), so that the Hall chip (12) can be located at the zero magnetic field of the special-shaped magnet (11).

3. A novel Hall-type phase sensor according to claim 1, characterized in that: The vertical position of the rotating sleeve (31) is restricted so as to be unable to detach from the screw fixing head (3), and is able to freely rotate axially in the circular through hole; the belt shifting block (32) can only move vertically in the vertical moving groove (301), and the top of the vertical moving groove (301) has a blocking portion that prevents the belt shifting block (32) from moving upward.

4. A novel Hall-type phase sensor according to claim 1, characterized in that: The transmission vertical rod (15) is installed in a vertical chamber in the outer peripheral wall of the magnet bin (1) and is connected to the chamber provided in the transmission ring (13). A helical gear and a flat gear are respectively installed at both ends of the transmission vertical rod (15). The flat gear installed at the lower end meshes with the teeth provided on the inner ring of the transmission ring (13), and the helical gear installed at the upper end meshes with the helical gear at the end of the threaded cross rod (16) to complete the transmission.

5. A novel Hall-type phase sensor according to claim 1, characterized in that: An assisting cylinder (4) is arranged outside the magnet bin (1); the outer peripheral wall of the assisting cylinder (4) has a limiting protruding groove (401) open to the electrical connector (2); and the threaded cross bar (16) is arranged inside the assisting cylinder (4).

6. A novel Hall-type phase sensor according to claim 5, characterized in that: The linkage member (5) comprises a wrapping ring (51) disposed in the assisting cylinder (4) and a connecting plate (52) connected to the wrapping ring (51) and disposed outside the assisting cylinder (4); the wrapping ring (51) surrounds the threaded cross bar (16) in the assisting cylinder (4) and is threadably engaged with the threaded cross bar (16).

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