An electromagnetic clutch mechanism with a function of engaging or disengaging when manually and electrically transmitting motion and actions on a coaxial line

Abstract

The invention provides an electromagnetic clutch mechanism that realizes the functions of engagement or disengagement when manual and electric transmission of motion and actions are carried out on a coaxial line. The electromagnetic clutch includes a housing, a friction pair element I, an electromagnet, a spring, a transmission shaft, a friction pair element II, a push sleeve, steel balls, a manual transmission sleeve, an end cover, and a positioning pin. When electric transmission is required, the electromagnet is energized, the friction pair element I disengages, and the connecting end of the rotary disk I can rotate freely. When the electromagnet is de-energized, the friction pair element I recombines for braking. When manual transmission is required, the electromagnet is de-energized, the manual transmission sleeve is rotated, relative movement occurs between the manual transmission sleeve and the transmission shaft, the steel balls and the push sleeve are pushed to move, so that the friction pair element II disengages, the manual transmission sleeve is continuously rotated, the transmission shaft and the friction pair element I are driven to rotate together through the positioning pin, and the connecting end of the rotary disk I can be driven to rotate manually. This structure is suitable for use in environments such as strong impact vibration, high and low temperatures, etc.

Description

Technical Field

[0001] The present invention relates to the technical field of clutches, and particularly to an electromagnetic clutch mechanism that realizes the functions of engagement or separation when manually and electrically transmitting motion and actions on the same axis. Background Art

[0002] Currently, the electromagnetic clutches on the market only use the electromagnetic force generated by the exciting coil current to manipulate the engaging element to engage or disengage the clutch, so as to realize the functions of transmitting motion and braking. The implementation method is relatively single. In the face of environments such as strong shock vibration, high and low temperatures where the exciting coil is not suitable for use, such clutches will fail.

[0003] Therefore, it is necessary to develop a clutch structure that is not affected by strong shock vibration, high and low temperatures, etc. Summary of the Invention

[0004] The purpose of the present invention is to provide an electromagnetic clutch mechanism that realizes the functions of engagement or separation when manually and electrically transmitting motion and actions on the same axis, so as to solve the problems existing in the prior art.

[0005] The technical solution adopted to achieve the purpose of the present invention is as follows: An electromagnetic clutch mechanism that realizes the functions of engagement or separation when manually and electrically transmitting motion and actions on the same axis includes a housing, a friction pair element I, an electromagnet, a spring, a transmission shaft, a friction pair element II, a push sleeve, steel balls, a manual transmission sleeve, an end cover, and a positioning pin.

[0006] The housing is of a rotary body structure, and a chamber for installing the friction pair element I, the electromagnet, the spring, and the transmission shaft is provided on one side.

[0007] The friction pair element I includes a rotary disk I and a friction disk I. Both the rotary disk I and the friction disk I are of rotary body structures. The rotary disk I is installed on the housing through a bearing I. One end of the friction disk I extends into the inner cavity of the electromagnet with a smaller aperture. The inner hole of the friction disk I is a spline hole and is sleeved on the transmission shaft and can rotate with the transmission shaft. There is a gap between the end face of the friction disk I and the end face of the electromagnet.

[0008] The electromagnet is of a cylindrical structure. A coil is installed inside the electromagnet. The central through hole is a circular hole. One end of the electromagnet extends into the chamber of the housing, and the other end is fixedly connected to the end cover.

[0009] The spring is placed in the central inner hole of the electromagnet and is sleeved on the transmission shaft. The two ends of the spring are respectively abutted against the friction disk I and the rotary disk II.

[0010] The transmission shaft is of a cylindrical structure and includes a shaft section I and a shaft section II. The shaft section I is a spline shaft, and the shaft section II is a cylindrical shaft. A positioning hole is provided at one end of the shaft section II away from the shaft section I.

[0011] Shaft section Ⅰ of the transmission shaft extends into the inner hole of the electromagnet. A friction disc Ⅰ, a spring, a rotary disc Ⅱ, and a push sleeve are sleeved on shaft section Ⅰ of the transmission shaft.

[0012] Shaft section Ⅱ of the transmission shaft is located inside the end cover, and a steel ball and a manual transmission sleeve are sequentially sleeved on it.

[0013] The friction pair element Ⅱ includes a rotary disc Ⅱ and a friction disc Ⅱ. Both the rotary disc Ⅱ and the friction disc Ⅱ are of rotary body structure. The friction disc Ⅱ is fixed on the end cover. One end of the rotary disc Ⅱ is located in the chamber of the end cover, and the other end extends into the inner cavity of the electromagnet with a smaller aperture. The inner hole of the rotary disc Ⅱ is a spline through-hole and is sleeved on the transmission shaft and can rotate with the transmission shaft.

[0014] The push sleeve is of cylindrical structure. The push sleeve passes through the circular through-hole of the end cover. One end abuts against the rotary disc Ⅱ, and the other end face abuts against the steel ball. The inner hole of the push sleeve is a spline through-hole and is sleeved on the transmission shaft.

[0015] The steel ball is placed between the push sleeve and the manual transmission sleeve, and both ends of the steel ball are respectively abutted by the push sleeve and the manual transmission sleeve.

[0016] The manual transmission sleeve is of rotary body structure, and the manual transmission sleeve is installed on the end cover through bearing Ⅱ.

[0017] The inner hole of the manual transmission sleeve is a round hole and is sleeved on the transmission shaft. A waist-shaped through-hole is provided on the outer wall of the manual transmission sleeve located outside the end cover, and the positioning pin is installed in the inner cavities of the waist-shaped through-hole of the manual transmission sleeve and the positioning hole of the transmission shaft.

[0018] The end cover is of rotary body structure, and is provided with a circular through-hole penetrating through its two ends. A chamber Ⅰ for installing the friction pair element Ⅱ is provided on one side, and a chamber Ⅱ for installing the manual transmission sleeve is provided on the other side. Chamber Ⅰ and chamber Ⅱ are communicated through the circular through-hole.

[0019] The positioning pin is installed in the inner cavities of the waist-shaped through-hole of the manual transmission sleeve and the positioning hole of the transmission shaft.

[0020] In the initial state, both the friction pair element Ⅰ and the friction pair element Ⅱ are in the engaged state.

[0021] When electric drive is required, the electromagnet is energized, the friction disc Ⅰ is attracted by the electromagnet, the friction disc Ⅰ and the rotary disc Ⅰ are separated, the friction pair element Ⅰ is disengaged, and the connecting end of the rotary disc Ⅰ can be freely rotated by the motor drive; when braking is required, the electromagnet is de-energized, the friction disc Ⅰ is again engaged with the rotary disc Ⅰ under the action of the spring, and the connecting end of the rotary disc Ⅰ is braked.

[0022] When manual transmission is required, the electromagnet is in a power-off state. Rotate the manual transmission sleeve. Since there are waist-shaped through holes on the outer wall of the manual transmission sleeve, relative movement occurs between the manual transmission sleeve and the transmission shaft, pushing the steel balls and the push sleeve to move, separating the second rotating disk and the friction disk II, disengaging the friction pair element II. Continue to rotate the manual transmission sleeve, and the edge of the waist-shaped through hole of the manual transmission sleeve contacts the positioning pin, driving the transmission shaft and the friction pair element I to rotate together through the positioning pin. The connecting end of the first rotating disk can be freely rotated manually. When braking is required, release the manual transmission sleeve. Under the action of the spring, the second rotating disk and the friction disk II are engaged to brake the connecting end of the first rotating disk, and at the same time, the push sleeve and the steel balls automatically return to their original positions.

[0023] Furthermore, the series structure formed by the friction pair element I, the electromagnet, the spring, the friction pair element II, the push sleeve, the steel balls, and the manual transmission sleeve through the transmission shaft is installed in the housing and the end cover to form a functional whole.

[0024] Furthermore, the transmission shaft has a structural form including a first shaft section and a second shaft section. The first shaft section is a spline shaft, the second shaft section is a cylindrical shaft, and a positioning hole is provided at one end of the second shaft section away from the first shaft section.

[0025] Furthermore, the friction disk I and the second rotating disk are connected to the transmission shaft by a spline connection structure.

[0026] Furthermore, the friction disk II is fixedly connected to the end cover.

[0027] Furthermore, the spring is placed in the inner hole of the center of the electromagnet and sleeved on the transmission shaft, and both ends of the spring are tightly abutted against the friction disk I and the second rotating disk respectively.

[0028] Furthermore, one end of the electromagnet extends into the chamber of the housing and is fixed to the housing and the end cover by a number of screws.

[0029] The technical effect of the present invention is beyond doubt: on the basis of maintaining the functions of the traditional electromagnetic clutch, it adds the function of manually operating the friction pair element to engage or disengage the clutch under the condition of power-off, realizing the functions of transmitting motion and braking. It can be used in environments such as strong impact vibration, high and low temperatures, and solves the defects existing in the electromagnetic clutches on the market. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic structural diagram of the electromagnetic clutch mechanism.

[0031] In the figure: housing 1, friction pair element I 2, electromagnet 3, spring 4, transmission shaft 5, friction pair element II 6, push sleeve 7, steel balls 8, manual transmission sleeve 9, end cover 10, bearing I 11, bearing II 12, and positioning pin 13. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] The present invention will be further described below in conjunction with embodiments, but it should not be understood that the above-mentioned subject matter scope of the present invention is limited to the following embodiments. Without departing from the above-mentioned technical idea of the present invention, various substitutions and changes made according to ordinary technical knowledge and conventional means in the art should be included within the protection scope of the present invention.

[0033] Refer to Figure 1 , this embodiment discloses an electromagnetic clutch mechanism that realizes the functions of engagement or separation when manually and electrically transmitting motion and actions on a coaxial line, including a housing 1, a friction pair element I 2, an electromagnet 3, a spring 4, a transmission shaft 5, a friction pair element II 6, a push sleeve 7, steel balls 8, a manual transmission sleeve 9, an end cover 10, a bearing I 11, a bearing II 12, and a positioning pin 13.

[0034] The housing 1 is of a rotary body structure, and a chamber for installing the friction pair element I 2, the electromagnet 3, the spring 4, and the transmission shaft 5 is provided on one side.

[0035] The friction pair element I 2 includes a rotary disc I and a friction disc I. Both the rotary disc I and the friction disc I are of rotary body structures. The rotary disc I is installed on the housing 1 through the bearing I 11. One end of the friction disc I extends into the inner cavity with a smaller aperture of the electromagnet 3. The inner hole of the friction disc I is a spline hole and is sleeved on the transmission shaft 5 and can rotate with the transmission shaft 5. There is a gap between the end face of the friction disc I and the end face of the electromagnet 3.

[0036] The electromagnet 3 is of a cylindrical structure. A coil is installed inside the electromagnet 3. The central through hole is a circular hole. One end of the electromagnet 3 extends into the chamber of the housing 1, and the other end is fixedly connected to the end cover 10.

[0037] The spring 4 is placed in the central inner hole of the electromagnet 3 and is sleeved on the transmission shaft 5. The two ends of the spring 4 are respectively abutted against the friction disc I and the rotary disc II.

[0038] The transmission shaft 5 is of a cylindrical structure and includes a shaft section I and a shaft section II. The shaft section I is a spline shaft, and the shaft section II is a cylindrical shaft. A positioning hole is provided at one end of the shaft section II away from the shaft section I.

[0039] The shaft section I of the transmission shaft 5 extends into the central inner hole of the electromagnet 3. The shaft section I of the transmission shaft 5 is sleeved with a friction disc I, a spring 4, a rotary disc II, and a push sleeve 7.

[0040] The shaft section II of the transmission shaft 5 is located inside the end cover 10 and is successively sleeved with steel balls 8 and a manual transmission sleeve 9.

[0041] The friction pair element II 6 includes a rotary disk II and a friction disk II. Both the rotary disk II and the friction disk II are of rotary body structures. The friction disk II is fixed on the end cover 10. One end of the rotary disk II is located in the chamber of the end cover 10, and the other end extends into the inner cavity with a smaller aperture of the electromagnet 3. The inner hole of the rotary disk II is a spline through-hole and is sleeved on the transmission shaft 5, and can rotate with the transmission shaft 5.

[0042] The push sleeve 7 is of a cylindrical structure. The push sleeve passes through the circular through-hole of the end cover 10. One end abuts tightly against the rotary disk II, and the other end face abuts tightly against the steel ball 8. The inner hole of the push sleeve is a spline through-hole and is sleeved on the transmission shaft 5.

[0043] The steel ball 8 is placed between the push sleeve 7 and the manual transmission sleeve 9, and both ends of the steel ball 8 are respectively abutted tightly by the push sleeve 7 and the manual transmission sleeve 9.

[0044] The manual transmission sleeve 9 is of a rotary body structure, and the manual transmission sleeve 9 is installed on the end cover 10 through the bearing II 12.

[0045] The inner hole of the manual transmission sleeve 9 is a round hole and is sleeved on the transmission shaft 5. A waist-shaped through-hole is provided on the outer wall of the manual transmission sleeve 9 located outside the end cover 10, and the positioning pin 13 is installed in the inner cavities of the waist-shaped through-hole of the manual transmission sleeve 9 and the positioning hole of the transmission shaft 5.

[0046] The end cover 10 is of a rotary body structure, and is provided with a circular through-hole penetrating through both ends thereof. A chamber I for installing the friction pair element II 6 is provided on one side, and a chamber II for installing the manual transmission sleeve 9 is provided on the other side. The chamber I and the chamber II are communicated through the circular through-hole.

[0047] The positioning pin 13 is installed in the inner cavities of the waist-shaped through-hole of the manual transmission sleeve 9 and the positioning hole of the transmission shaft 5.

[0048] In the initial state, both the friction pair element I 2 and the friction pair element II 6 are in the engaged state.

[0049] When electric drive is required, the electromagnet 3 is powered on, the friction disk I is attracted by the electromagnet 3, the friction disk I and the rotary disk I are separated, the friction pair element I 2 is disengaged, and the connecting end of the rotary disk I can be freely rotated by the motor drive; when braking is required, the electromagnet 3 is powered off, and the friction disk I is engaged with the rotary disk I again under the action of the spring 4 to brake the connecting end of the rotary disk I;

[0050] When manual transmission is required, the electromagnet 3 is in a power-off state. Rotate the manual transmission sleeve 9. Since there are waist-shaped through holes on the outer wall of the manual transmission sleeve 9, relative movement occurs between the manual transmission sleeve 9 and the transmission shaft 5, pushing the steel balls 8 and the push sleeve 7 to move, separating the rotary disk II and the friction disk II, disengaging the friction pair element II 6. Continuing to rotate the manual transmission sleeve 9, the edge of the waist-shaped through hole of the manual transmission sleeve 9 contacts the positioning pin 13, driving the transmission shaft 5 and the friction pair element I 2 to rotate together through the positioning pin 13, and the connecting end of the rotary disk I can be freely rotated manually; when braking is required, loosen the manual transmission sleeve 9, and under the action of the spring 4, the rotary disk II and the friction disk II are engaged to brake the connecting end of the rotary disk I, and at the same time, the push sleeve 7 and the steel balls 8 automatically return to their original positions.

[0051] It should be noted that through a new mechanical transmission structure, the present invention adopts technologies such as optimizing the magnetic circuit and high-density power winding design. On the basis of maintaining the functions of traditional electromagnetic clutches, it realizes the manual operation of engaging elements under the condition of no power supply, enabling the clutch to engage or disengage, and realizing the functions of transmitting motion and braking. It is suitable for use in environments such as strong shock vibration, high and low temperatures.

[0052] Embodiment 2:

[0053] The main structure of this embodiment is the same as that of Embodiment 1. Further, the series structure formed by the friction pair element I, the electromagnet, the spring, the friction pair element II, the push sleeve, the steel balls, and the manual transmission sleeve through the transmission shaft is installed in the housing and the end cover to form a functional whole.

[0054] Embodiment 3:

[0055] The main structure of this embodiment is the same as that of Embodiment 1. Further, the transmission shaft includes a structural form of shaft section I and shaft section II. Shaft section I is a spline shaft, and shaft section II is a cylindrical shaft. A positioning hole is provided at one end of shaft section II away from shaft section I.

[0056] Embodiment 4:

[0057] The main structure of this embodiment is the same as that of Embodiment 1. Further, the friction disk I, the rotary disk II and the transmission shaft adopt a spline connection structure.

[0058] Embodiment 5:

[0059] The main structure of this embodiment is the same as that of Embodiment 1. Further, the friction disk II and the end cover adopt a fixed connection structure.

[0060] Embodiment 6:

[0061] The main structure of this embodiment is the same as that of Embodiment 1. Further, the spring is placed in the central inner hole of the electromagnet and sleeved on the transmission shaft, and both ends of the spring are tightly abutted against the friction disk I and the rotary disk II respectively.

[0062] Embodiment 7:

[0063] The main structure of this embodiment is the same as that of Embodiment 1. Further, the structure in which one end of the electromagnet extends into the chamber of the housing is fixed to the housing and the end cover by a plurality of screws.

Claims

1. An electromagnetic clutch mechanism that has an engagement or disengagement function when achieving manual and electric transmission of motion and actions on a coaxial line, characterized in that: It includes a housing (1), a friction pair element I (2), an electromagnet (3), a spring (4), a transmission shaft (5), a friction pair element II (6), a push sleeve (7), steel balls (8), a manual transmission sleeve (9), an end cover (10) and a positioning pin (13); The housing (1) is of a rotary body structure, and a chamber for installing the friction pair element I (2), the electromagnet (3), the spring (4) and the transmission shaft (5) is provided on one side; The friction pair element I (2) includes a rotary disk I and a friction disk I. Both the rotary disk I and the friction disk I are of rotary body structures. The rotary disk I is installed on the housing (1) through a bearing I (11). One end of the friction disk I extends into the inner cavity with a smaller aperture of the electromagnet (3). The inner hole of the friction disk I is a spline hole and is sleeved on the transmission shaft (5) and can rotate with the transmission shaft (5). There is a gap between the end face of the friction disk I and the end face of the electromagnet (3); The electromagnet (3) is of a cylindrical structure. A coil is installed inside the electromagnet (3). The central through hole is a circular hole. One end of the electromagnet (3) extends into the chamber of the housing (1), and the other end is fixedly connected to the end cover (10); The spring (4) is placed in the central inner hole of the electromagnet (3) and is sleeved on the transmission shaft (5). Both ends of the spring (4) are tightly abutted against the friction disk I and the rotary disk II respectively; The transmission shaft (5) is of a cylindrical structure and includes a shaft section I and a shaft section II. The shaft section I is a spline shaft, and the shaft section II is a cylindrical shaft. A positioning hole is provided at one end of the shaft section II away from the shaft section I; The shaft section I of the transmission shaft (5) extends into the central inner hole of the electromagnet (3). The shaft section I of the transmission shaft (5) is sleeved with a friction disk I, a spring (4), a rotary disk II and a push sleeve (7); The shaft section II of the transmission shaft (5) is located inside the end cover (10) and is sequentially sleeved with steel balls (8) and a manual transmission sleeve (9); The friction pair element II (6) includes a rotary disk II and a friction disk II. Both the rotary disk II and the friction disk II are of rotary body structures. The friction disk II is fixed on the end cover (10). One end of the rotary disk II is located inside the chamber of the end cover (10), and the other end extends into the inner cavity with a smaller aperture of the electromagnet (3). The inner hole of the rotary disk II is a spline through hole and is sleeved on the transmission shaft (5) and can rotate with the transmission shaft (5); The push sleeve (7) is of a cylindrical structure. The push sleeve passes through the circular through hole of the end cover (10). One end is tightly abutted against the rotary disk II, and the other end face is tightly abutted against the steel balls (8). The inner hole of the push sleeve is a spline through hole and is sleeved on the transmission shaft (5); The steel balls (8) are placed between the push sleeve (7) and the manual transmission sleeve (9). Both ends of the steel balls (8) are tightly abutted against by the push sleeve (7) and the manual transmission sleeve (9) respectively; The manual transmission sleeve (9) is of a rotary body structure. The manual transmission sleeve (9) is installed on the end cover (10) through a bearing II (12); The inner hole of the manual transmission sleeve (9) is a circular hole and is sleeved on the transmission shaft (5). A waist-shaped through hole is provided on the outer wall of the manual transmission sleeve (9) located outside the end cover (10). The positioning pin (13) is installed in the inner cavities of the waist-shaped through hole of the manual transmission sleeve (9) and the positioning hole of the transmission shaft (5); The end cover (10) is of a rotary body structure, with a circular through-hole penetrating both ends thereof. A chamber I for installing the friction pair element II (6) is provided on one side, and a chamber II for installing the manual transmission sleeve (9) is provided on the other side. Chamber I and chamber II are communicated through the circular through-hole; The positioning pin (13) is installed in the inner cavities of the kidney-shaped through-hole of the manual transmission sleeve (9) and the positioning hole of the transmission shaft (5); In the initial state, both the friction pair element I (2) and the friction pair element II (6) are in the engaged state; When electric drive is required, the electromagnet (3) is energized, the friction disc I is attracted by the electromagnet (3), the friction disc I and the rotary disc I are separated, the friction pair element I (2) is disengaged, and the connecting end of the rotary disc I can be freely rotated by the motor. When braking is required, the electromagnet (3) is de-energized, and the friction disc I is engaged with the rotary disc I again under the action of the spring (4) to brake the connecting end of the rotary disc I; When manual drive is required, the electromagnet (3) is in the de-energized state. Rotate the manual transmission sleeve (9). Since a kidney-shaped through-hole is provided on the outer wall of the manual transmission sleeve (9), relative movement occurs between the manual transmission sleeve (9) and the transmission shaft (5), pushing the steel ball (8) and the push sleeve (7) to move so that the rotary disc II and the friction disc II are separated, and the friction pair element II (6) is disengaged. Continue to rotate the manual transmission sleeve (9), and the edge of the kidney-shaped through-hole of the manual transmission sleeve (9) contacts the positioning pin (13), driving the transmission shaft (5) and the friction pair element I (2) to rotate together through the positioning pin (13), and the connecting end of the rotary disc I can be freely rotated manually. When braking is required, loosen the manual transmission sleeve (9), and the rotary disc II and the friction disc II are engaged under the action of the spring (4) to brake the connecting end of the rotary disc I. At the same time, the push sleeve (7) and the steel ball (8) automatically return to their original positions.

2. An electromagnetic clutch mechanism for achieving the engagement or disengagement function when manually and electrically transmitting motion and actions on a coaxial line according to claim 1, characterized in that: The series structure formed by the friction pair element I (2), the electromagnet (3), the spring (4), the friction pair element II (6), the push sleeve (7), the steel ball (8), the manual transmission sleeve (9) and the transmission shaft (5) is installed in the housing (1) and the end cover (10) to form a functional whole.

3. An electromagnetic clutch mechanism for achieving the functions of engaging or disengaging during the manual and electric transmission of motion and actions on a coaxial line according to claim 1, characterized in that: The transmission shaft (5) has a structural form including a shaft section I and a shaft section II. The shaft section I is a spline shaft, the shaft section II is a cylindrical shaft, and a positioning hole is provided at one end of the shaft section II far from the shaft section I.

4. An electromagnetic clutch mechanism according to claim 1, which has a function of engaging or disengaging when manually and electrically transmitting motion and actions on a coaxial line, characterized in that: The friction disc I, the rotary disc II and the transmission shaft (5) adopt a spline connection structure.

5. An electromagnetic clutch mechanism for achieving the engagement or disengagement function during the manual and electric transmission of motion and actions on a coaxial line according to claim 1, characterized in that: The friction disc II and the end cover (10) adopt a fixed connection structure.

6. An electromagnetic clutch mechanism for realizing the engagement or disengagement function when manually and electrically transmitting motion and actions on a coaxial line according to claim 1, characterized in that: The spring (4) is placed in the central inner hole of the electromagnet (3) and sleeved on the transmission shaft (5). Both ends of the spring (4) are in tight contact with the friction disc I and the rotary disc II respectively.

7. An electromagnetic clutch mechanism for realizing the functions of engaging or disengaging during the manual and electric transmission of motion and actions on a coaxial line according to claim 1, characterized in that: One end of the electromagnet (3) extends into the chamber of the housing (1), and is fixed to the housing (1) and the end cover (10) by a plurality of screws.

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