Driving mechanism of temperature adjusting device

Abstract

The utility model belongs to the technical field of driving devices, and particularly relates to a driving mechanism of a temperature adjusting device, which comprises a motor and a power shaft, a valve core is arranged at the left end of the power shaft, a threaded hole is arranged in a rotating part of the motor, the right end of the power shaft is arranged in the rotating part, and an external thread matched with the threaded hole is arranged at the right end of the power shaft. And a limiting structure for limiting the circumferential rotation of the power shaft is arranged between the motor and the power shaft. A circumferential limiting structure does not need to be arranged between the valve element and the valve body, and the valve element is convenient to install.

Description

Technical Field:

[0001] The utility model belongs to the technical field of driving devices, and particularly refers to a driving mechanism of a temperature regulating device. Background Art:

[0002] The Chinese utility model patent (publication number CN215445164U, application date July 23, 2021, publication date January 7, 2022) discloses a temperature regulating valve, which includes a valve body and a temperature sensor. The features are as follows: a cold water inlet channel, a hot water inlet channel and a water outlet channel are arranged in the valve body; a mixing chamber is arranged in the valve body; the water outlet channel is communicated with the mixing chamber; the temperature sensor is used for detecting the temperature of the water flowing through the water outlet channel; a rotary driving source is arranged in the valve body; the output end of the rotary driving source is connected with a power shaft through a speed reducing device; the end of the power shaft is connected with a valve core; the rotary driving source can drive the power shaft to rotate so that the valve core reciprocates along the axis direction of the power shaft, and the on-off between the mixing chamber and the cold water inlet channel or the hot water inlet channel is controlled by the valve core. A threaded groove is arranged on the valve core, and the power shaft is in threaded connection with the threaded groove. A positioning member is arranged in the valve body, and the positioning member is used for circumferentially positioning the valve core. The positioning member includes several positioning blocks, and several positioning blocks are all arranged on the inner wall of the valve body. Several positioning grooves corresponding to the several positioning blocks are arranged on the outer side wall of the valve core, and several positioning grooves are all arranged along the axis direction of the power shaft. Several positioning blocks can slide along several positioning grooves respectively, and the cooperation between several positioning blocks and several positioning grooves circumferentially positions the valve core.

[0003] The disadvantage of the above temperature regulating valve is that when installing the valve core, it is necessary to align the positioning blocks arranged on the inner wall of the valve body with the positioning grooves arranged on the outer side wall of the valve core before the valve core can be installed. Since the positioning blocks are arranged on the inner wall of the valve body and the valve body is relatively deep, it is not convenient to align the positioning blocks and the positioning grooves, and the installation of the valve core is inconvenient. Summary of the Invention:

[0004] The purpose of the utility model is to provide a motor of a temperature regulating device, in which there is no need to set a circumferential limiting structure between the valve core and the valve body, and the installation of the valve core is convenient.

[0005] The utility model is realized as follows:

[0006] A driving mechanism of a temperature regulating device includes a motor and a power shaft. A valve core is arranged at the left end of the power shaft. A threaded hole is arranged in the rotating part of the motor. The right end of the power shaft is arranged in the rotating part and is provided with an external thread adapted to the threaded hole. A limiting structure for restricting the circumferential rotation of the power shaft is arranged between the motor and the power shaft.

[0007] In the drive mechanism of the above-mentioned temperature adjustment device, a fixed sleeve is installed at the left end of the motor. The fixed sleeve is sleeved outside the power shaft. The limiting structure includes a limiting block arranged on the power shaft and a limiting long groove arranged inside the fixed sleeve. The limiting block is slidably arranged in the limiting long groove along the axial direction of the power shaft.

[0008] In the drive mechanism of the above-mentioned temperature adjustment device, a limiting convex edge for abutting and limiting the limiting block is arranged on the left side of the limiting long groove. The limiting block is limited between the limiting convex edge and the motor.

[0009] In the drive mechanism of the above-mentioned temperature adjustment device, the left end of the fixed sleeve extends into the valve body, and a first sealing ring sleeved outside the fixed sleeve is arranged between the fixed sleeve and the valve body. A second sealing ring sleeved outside the power shaft is arranged between the power shaft and the limiting convex edge.

[0010] In the drive mechanism of the above-mentioned temperature adjustment device, an installation convex edge is arranged at the right end of the fixed sleeve. The installation convex edge is arranged between the valve body and the motor. An installation ear one is arranged at the right end of the valve body, an installation ear two is arranged on the installation convex edge, and an installation ear three is arranged at the left end of the motor. The installation ear one, the installation ear two and the installation ear three are connected by fasteners.

[0011] In the drive mechanism of the above-mentioned temperature adjustment device, the fastener can be a screw. The rod part of the screw passes through the installation ear three, the installation ear two and is screwed to the installation ear one.

[0012] In the drive mechanism of the above-mentioned temperature adjustment device, the fastener can also be a bolt and a nut. The rod part of the bolt passes through the installation ear one, the installation ear two, the installation ear three in sequence and is screwed to the nut.

[0013] In the drive mechanism of the above-mentioned temperature adjustment device, an installation shaft is arranged at the left end of the power shaft. The valve core is sleeved on the installation shaft and is fixed by a screw. The diameter of the installation shaft is smaller than the diameter of the power shaft.

[0014] In the drive mechanism of the above-mentioned temperature adjustment device, the installation shaft, the limiting block and the power shaft are of an integral structure.

[0015] In the drive mechanism of the above-mentioned temperature adjustment device, the fixing method of the valve core and the installation shaft: the screw is screwed to the valve core, and the lower end of the screw extends into the installation shaft. The valve core is axially and circumferentially limited on the installation shaft by the screw.

[0016] In the drive mechanism of the above-mentioned temperature adjustment device, the limiting structure can also be: an end cover is arranged at the right end of the motor. The limiting structure includes a convex block arranged on the end cover and a sliding groove arranged on the power shaft. The convex block is slidably arranged in the sliding groove along the axial direction of the power shaft. The power shaft and the valve core are of an integral structure.

[0017] In the drive mechanism of the above-mentioned temperature regulating device, a controller is further included. An on-power homing device is provided between the motor and the power shaft. The on-power homing device includes a magnetic steel arranged on the power shaft, and a magnetic induction sensor for sensing the change of the magnetic property of the magnetic steel is arranged on the motor. The controller receives the signal of the magnetic induction sensor and controls the motor.

[0018] In the drive mechanism of the above-mentioned temperature regulating device, the threaded hole is a through hole penetrating the rotating part. The magnetic steel is arranged on the right side of the external thread. An end cover is provided at the right end of the motor, and the magnetic induction sensor is arranged inside the end cover.

[0019] In the drive mechanism of the above-mentioned temperature regulating device, the magnetic induction sensor is a Hall sensor, a magneto-electric induction sensor, a magnetoresistive sensor or a reed switch.

[0020] In the drive mechanism of the above-mentioned temperature regulating device, the rotating part can be the rotor shaft of the motor.

[0021] In the drive mechanism of the above-mentioned temperature regulating device, the rotating part can also be the rotor of the motor, and no rotor shaft is provided inside the motor.

[0022] The prominent advantages of the present utility model compared with the prior art are as follows:

[0023] 1. The right end of the power shaft of the present utility model is threadedly connected to the rotating part of the motor, and a limiting structure for restricting the circumferential rotation of the power shaft is provided between the motor and the power shaft, so that the power shaft moves axially relative to the motor, and then drives the valve core to move axially. There is no need to set a circumferential limiting structure between the valve core and the valve body. When installing the valve core, only need to insert the valve core into the valve body, and the valve core is convenient to install; the power shaft of the present utility model is arranged inside the motor to form an integral structure with the motor, and through the circumferential limiting structure, the rotational motion of the motor rotating part is converted into the linear motion of the power shaft, making full use of the high-precision speed control ability of the stepping motor, and realizing the most direct and accurate temperature control effect of the stepping motor on the temperature regulating device;

[0024] 2. An on-power homing device is provided between the motor and the power shaft of the present utility model. Each time the motor is powered on, the power shaft will reset, which is convenient for the controller to accurately control the movement of the power shaft. Description of the drawings:

[0025] Figure 1 is the perspective view of the present utility model;

[0026] Figure 2 is the sectional view of the present utility model;

[0027] Figure 3 is the perspective view of the power shaft and the valve core of the present utility model.

[0028] Reference numerals: 1, motor; 2, power shaft; 3, valve core; 4, threaded hole; 5, external thread; 6, fixed sleeve; 7, limit block; 8, limit long groove; 9, limit convex edge; 10, valve body; 11, seal ring I; 12, seal ring II; 13, mounting convex edge; 14, mounting ear I; 15, mounting ear II; 16, mounting ear III; 17, mounting shaft; 18, magnetic steel; 19, magnetic induction sensor; 20, end cover; 21, rotating part. Detailed implementation manners:

[0029] The following further describes the present utility model with specific embodiments. Refer to Figure 1 —3:

[0030] A driving mechanism of a temperature regulating device includes a motor 1 and a power shaft 2. A valve core 3 is provided at the left end of the power shaft 2. A threaded hole 4 is provided in a rotating part 21 of the motor 1. The right end of the power shaft 2 is arranged in the rotating part 21 and is provided with an external thread 5 adapted to the threaded hole 4. A limiting structure for restricting the circumferential rotation of the power shaft 2 is provided between the motor 1 and the power shaft 2.

[0031] Furthermore, the motor 1 is a servo motor or a stepper motor. In this embodiment, the motor 1 is a stepper motor.

[0032] The working principle of the present utility model: As Figures 1-3 shown, due to the existence of the limiting structure, the power shaft 2 cannot rotate circumferentially. When the rotating part 21 of the motor 1 rotates, the power shaft 2 axially moves relative to the motor 1, and then drives the valve core 3 to axially move.

[0033] The right end of the power shaft 2 of the present utility model is threadedly connected to the rotating part 21 of the motor 1, and a limiting structure for restricting the circumferential rotation of the power shaft 2 is provided between the motor 1 and the power shaft 2, so that the power shaft 2 axially moves relative to the motor 1, and then drives the valve core 3 to axially move. There is no need to set a circumferential limiting structure between the valve core 3 and the valve body 10. When installing the valve core 3, only need to insert the valve core 3 into the valve body 10, and the valve core installation is convenient.

[0034] The present utility model sets the power shaft 2 into the motor 1 to form an integral structure, and through the circumferential limiting structure, converts the rotational motion of the rotating part 21 of the motor 1 into the linear motion of the power shaft 2, makes full use of the high-precision speed control ability of the stepper motor, and realizes the most direct and accurate temperature control effect of the stepper motor on the temperature regulating device.

[0035] Limiting structure: As Figure 2 、 3As shown in the figure, a fixed sleeve 6 is installed at the left end of the motor 1. The fixed sleeve 6 is sleeved outside the power shaft 2. The limiting structure includes a limiting block 7 arranged on the power shaft 2 and a limiting long groove 8 arranged inside the fixed sleeve 6. The limiting block 7 is slidably arranged in the limiting long groove 8 along the axial direction of the power shaft 2.

[0036] In order to limit the movement of the power shaft 2, a limiting convex edge 9 for abutting and limiting with the limiting block 7 is arranged on the left side of the limiting long groove 8. The limiting block 7 is limited between the limiting convex edge 9 and the motor 1.

[0037] Since the depth of the fixed sleeve 6 is relatively shallow and the limiting long groove 8 can be directly seen from the right side, the limiting block 7 is easy to align with the limiting long groove 8, which is convenient for installation.

[0038] In order to prevent liquid leakage, the left end of the fixed sleeve 6 extends into the valve body 10, and a first sealing ring 11 sleeved outside the fixed sleeve 6 is arranged between the fixed sleeve 6 and the valve body 10. A second sealing ring 12 sleeved outside the power shaft 2 is arranged between the power shaft 2 and the limiting convex edge 9.

[0039] Installation structure of the fixed sleeve 6 and the motor 1: An installation convex edge 13 is arranged at the right end of the fixed sleeve 6. The installation convex edge 13 is arranged between the valve body 10 and the motor 1. An installation ear 14 is arranged at the right end of the valve body 10. An installation ear 15 is arranged on the installation convex edge 13. An installation ear 16 is arranged at the left end of the motor 1. The installation ear 14, the installation ear 15 and the installation ear 16 are connected by fasteners.

[0040] Installation structure of the valve core 3: An installation shaft 17 is arranged at the left end of the power shaft 2. The valve core 3 is sleeved on the installation shaft 17 and fixed by screws. The diameter of the installation shaft 17 is smaller than that of the power shaft 2. The valve core 3 and the installation shaft 17 are of a split structure, so that the valve core 3 does not affect the installation of the fixed sleeve 6.

[0041] Fixing method of the valve core 3 and the installation shaft 17: The screw is threadedly connected with the valve core 3, and the lower end of the screw extends into the installation shaft 17. The valve core 3 is axially and circumferentially limited on the installation shaft 17 by the screw.

[0042] Furthermore, the installation shaft 17, the limiting block 7 and the power shaft 2 are of an integral structure.

[0043] Installation process of the present utility model: On the basis of the overall structure formed by the power shaft 2 and the motor 1, first, the fixed sleeve 6 is sleeved from the left end of the power shaft 2, then the valve core 3 is sleeved on the installation shaft 17, and finally the fixed sleeve 6 and the valve core 3 are installed into the valve body 10.

[0044] Furthermore, it further includes a controller. There is a power-on homing device between the motor 1 and the power shaft 2. The power-on homing device includes a permanent magnet 18 arranged on the power shaft 2, and a magnetic induction sensor 19 for sensing the magnetic change of the permanent magnet 18 is arranged on the motor 1. The controller receives the signal of the magnetic induction sensor 19 and controls the motor 1. In this embodiment, there are two relatively arranged permanent magnets 18.

[0045] When the motor 1 is powered on again, the motor 1 controls the rotating member 21 to reverse until the permanent magnet 18 is directly opposite to the magnetic induction sensor 19, indicating that the power shaft 2 has been reset. The magnetic induction sensor 19 transmits a signal to the controller, and the controller controls the motor 1 to stop reversing. Each time the motor 1 of the present utility model is powered on, the power shaft 2 will be reset, which is convenient for the controller to accurately control the movement of the power shaft 2.

[0046] Installation structure of the magnetic induction sensor 19 of the permanent magnet 18: The threaded hole 4 is a through hole penetrating the rotating member 21. The permanent magnet 18 is arranged on the right side of the external thread 5. There is an end cover 20 at the right end of the motor 1, and the magnetic induction sensor 19 is arranged inside the end cover 20. In this embodiment, the magnetic induction sensor 19 is arranged above the power shaft 2.

[0047] Preferably, the magnetic induction sensor 19 is a Hall sensor, a magneto-inductive sensor, a magnetoresistive sensor or a reed switch. In this embodiment, the magnetic induction sensor 19 is a Hall sensor.

[0048] Furthermore, the rotating member 21 is the rotor shaft of the motor 1, which is convenient for machining the threaded hole 4. In this embodiment, the structure of the motor 1 is the same as that of a common stepping motor, including a stator, a rotor and a rotor shaft. The rotating member 21 is the rotor shaft, and the threaded hole 4 is arranged inside the rotor shaft, that is, the rotor shaft is of a hollow structure and the inner hole is provided with an internal thread.

[0049] The above embodiments are only one of the preferred embodiments of the present utility model, and do not limit the scope of implementation of the present utility model. Therefore, all equivalent changes made according to the shape, structure and principle of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A driving mechanism for a temperature regulating device, comprising a motor (1) and a power shaft (2), wherein a valve core (3) is provided at the left end of the power shaft (2), and it is characterized in that: A threaded hole (4) is provided in the rotating member (21) of the motor (1). The right end of the power shaft (2) is arranged inside the rotating member (21), and an external thread (5) adapted to the threaded hole (4) is provided at the right end. A limiting structure for restricting the circumferential rotation of the power shaft (2) is provided between the motor (1) and the power shaft (2).

2. The drive mechanism of a temperature adjustment device according to claim 1, characterized in that: A fixed sleeve (6) is installed at the left end of the motor (1). The fixed sleeve (6) is sleeved outside the power shaft (2). The limiting structure includes a limiting block (7) arranged on the power shaft (2) and a limiting long groove (8) arranged inside the fixed sleeve (6). The limiting block (7) is slid axially along the power shaft (2) inside the limiting long groove (8).

3. The drive mechanism of a temperature adjustment device according to claim 2, characterized in that: A limiting convex edge (9) for abutting and limiting the limiting block (7) is provided on the left side of the limiting long groove (8). The limiting block (7) is limited between the limiting convex edge (9) and the motor (1).

4. The drive mechanism of a temperature adjustment device according to claim 2, characterized in that: The left end of the fixed sleeve (6) extends into the valve body (10), and a first sealing ring (11) sleeved outside the fixed sleeve (6) is provided between the fixed sleeve (6) and the valve body (10). A second sealing ring (12) sleeved outside the power shaft (2) is provided between the power shaft (2) and the limiting convex edge (9).

5. The drive mechanism of a temperature adjustment device according to claim 4, characterized in that: An installation convex edge (13) is provided at the right end of the fixed sleeve (6). The installation convex edge (13) is arranged between the valve body (10) and the motor (1). An installation ear one (14) is provided at the right end of the valve body (10). An installation ear two (15) is provided on the installation convex edge (13). An installation ear three (16) is provided at the left end of the motor (1). The installation ear one (14), the installation ear two (15) and the installation ear three (16) are connected by fasteners.

6. The drive mechanism of a temperature adjustment device according to claim 2, characterized in that: An installation shaft (17) is provided at the left end of the power shaft (2). The valve core (3) is sleeved on the installation shaft (17) and fixed by screws. The diameter of the installation shaft (17) is smaller than the diameter of the power shaft (2).

7. The drive mechanism of a temperature adjustment device according to claim 1, characterized in that: It further includes a controller. An on - power return - to - zero device is provided between the motor (1) and the power shaft (2). The on - power return - to - zero device includes a magnet (18) arranged on the power shaft (2), and a magnetic induction sensor (19) for sensing the magnetic change of the magnet (18) is provided on the motor (1). The controller receives the signal of the magnetic induction sensor (19) and controls the motor (1).

8. The drive mechanism of a temperature adjustment device according to claim 7, characterized in that: The threaded hole (4) is a through - hole penetrating the rotating member (21). The magnet (18) is arranged on the right side of the external thread (5). A end cover (20) is provided at the right end of the motor (1). The magnetic induction sensor (19) is arranged inside the end cover (20).

9. The drive mechanism of a temperature adjustment device according to claim 7, characterized in that: The magnetic induction sensor (19) is a Hall sensor, a magneto - electric induction sensor, a magnetoresistive sensor or a reed switch.

10. The drive mechanism of a temperature adjustment device according to claim 1, characterized in that: The rotating member (21) is the rotor shaft of the motor (1).

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