A brake clutch device
By using the design of the mandrel, first working part, slider and spring in the brake clutch device, the rapid response and stable transmission of torque are achieved, and the problems of large size, high power consumption and complex installation in the prior art are solved. , improves safety and service life.
Patent Information
- Application Number
- CN201910937869.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2019-09-30
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2039-09-30
AI Technical Summary
During the production and use of existing brakes and clutches, there are problems such as large size, high power consumption, slow reaction, small torque, complex installation and easy failure, which poses great safety hazards.
The design includes a mandrel, a first working part, a slider, a spring and a brake clutch mechanism, and the torque is transmitted through the contraction and expansion of the spring. It has a simple structure, small size, stable performance, low energy consumption, easy installation, and It can adjust the torque linearly to achieve permanent high torque transmission.
It realizes rapid response, stability and consistency of torque, reduces the possibility of installation errors, improves service life, and maintains high torque transmission, solving safety hazards in the prior art.
Smart Images
Figure CN110645283B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of control groups of machinery, motors or electromechanical equipment, and in particular to a brake clutch device. Background Art
[0002] The current brakes and clutches have been found to have the following problems in production practice: the transmission of torque is mainly achieved by circular friction surfaces or magnetic powder, and the existing devices are large in size, high in power consumption, slow in response, and low in torque. At the same time, many brakes and clutches are also troublesome to assemble, and experienced workers are required to accurately adjust the brake and clutch clearances before tightening the mounting screws. Often due to the lack of experience of workers, the brake and clutch clearances are adjusted incorrectly, resulting in brake and clutch failure. In addition, during the use of the assembled brakes and clutches, the brake and clutch clearances may become smaller due to vibration, loosening of the locking screws, etc., resulting in the brake and clutch plates being inseparable, or the brake and clutch clearances becoming larger, resulting in the brake and clutch plates being unable to engage, and finally the brake and clutch failing. Or when assembling on the machine, due to the axial movement of the assembly shaft itself, the brake and clutch clearances will change with the movement of the assembly shaft. In severe cases, the brake and clutch will fail for the same reasons as mentioned above, which is a serious problem. Therefore, the existing brakes and clutches have relatively large safety hazards due to design defects. Summary of the invention
[0003] The purpose of the present invention is to overcome the defects of the prior art and provide a brake clutch device with extremely simple structure, small size, large torque transmission, stable performance, good consistency, low energy consumption, long service life, linear torque adjustment, fast response, easy installation, not prone to errors, and permanent high torque transmission, so as to obtain a spring-wound brake clutch device.
[0004] In order to achieve the above object, the present invention adopts the following technical scheme:
[0005] A brake clutch device, comprising:
[0006] A mandrel having a power input end and a power output end;
[0007] A first working piece, which is arranged on the power input end of the mandrel and is linked with the mandrel; the first working piece has an outer sleeve facing the power output end, and a placement cavity is left between the outer sleeve and the mandrel;
[0008] A second working piece, the second working piece is arranged on the power output end of the mandrel and rotates idly relative to the mandrel;
[0009] A slider is sleeved on the mandrel and is located in the placement cavity. The slider has the characteristics of idling and axial sliding relative to the mandrel;
[0010] A spring, which is a coil spring, is sleeved on the core shaft and is located in a placement cavity, and the placement cavity allows the spring to rotate freely and expand and contract linearly without deformation, one end of the spring is fixedly connected to the slider, and the other end of the spring is fixedly connected to the second working member;
[0011] The brake clutch mechanism connects the first working piece and the slider to achieve the connection or disconnection of the first working piece and the slider.
[0012] The above solution is further that the first working piece is a sleeve structure, an inner step is provided inside the first working piece, and the inner step leans against the sliding block.
[0013] The above scheme is further that the first working piece and the slider are engaged by a snap-fit, the first working piece is fastened to the core shaft, and a braking clutch mechanism is assembled on the first working piece, the braking clutch mechanism has a buckle and a reset piece, and the slider is provided with a buckle groove, the buckle is inserted into the buckle groove to realize the engagement between the first working piece and the slider, and the reset piece provides auxiliary force for the buckle to exit the buckle groove.
[0014] The above scheme is further that the first working piece and the slider are frictionally engaged by surface contact, the first working piece is tightly connected to the core shaft, and a braking clutch mechanism is arranged on the first working piece. The braking clutch mechanism is a permanent magnet braking clutch structure, which is composed of a permanent magnet and a coil combination, and the slider is a magnetic conductor.
[0015] The above scheme further has the following features: the first working piece is frictionally engaged with the slider, the first working piece is sleeved on the core shaft via a spline structure, and the brake clutch mechanism pushes the first working piece to fit closely against the slider.
[0016] The above solution is further that the buckle is manually driven to be inserted into or withdrawn from the buckle slot.
[0017] The above solution is further that the buckle is electrically driven to be inserted into or withdrawn from the buckle slot.
[0018] The above scheme is further that the buckle is electromagnetically pushed to insert or withdraw from the buckle slot, and the buckle is a magnetic conductor.
[0019] The present invention realizes the braking and clutching effect by tightening the mandrel when the spring contracts or clamping the first working piece and the second working piece when the spring expands. When the first working piece is not connected to the slider, the first working piece and the mandrel rotate freely together, and the slider, the spring and the second working piece do not rotate. When the first working piece and the slider are connected together through the action of the braking and clutching mechanism, the slider will be driven to rotate together, and the rotation of the slider causes the spring to contract in the spiral direction or expand in the opposite direction; when the spring contracts, the mandrel is tightened to clamp the mandrel; and when the spring expands, the first working piece and the second working piece are clamped to rotate together; whether it is contraction and clamping or expansion and clamping, the torque transmission can be completed to achieve the clutch effect. When either the first working piece and the second working piece are fixed, this device will become a brake.
[0020] The present invention breaks the limitation that the radial dimension must be enlarged to increase the torque of the brake and clutch on the market, that is, the torque is proportional to the radial dimension, and proposes the concept that the torque is proportional to the axial dimension, so as to achieve small radial dimension and large torque output. The structure is extremely simple, the volume is small, the torque is large, the performance is stable, the consistency is good, the energy consumption is low, the service life is long, the torque can be linearly adjusted, the response is fast, and the installation is convenient, it is not easy to make mistakes, and the high torque transmission is permanently maintained, so as to obtain a spring-wound brake and clutch device. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Attached Figure 1 It is a structural schematic diagram of the first embodiment of the present invention;
[0022] Attached Figure 2 It is a schematic structural diagram of a second embodiment of the present invention;
[0023] Attached Figure 3 It is a schematic structural diagram of the third embodiment of the present invention;
[0024] Attached Figure 4 Schematic diagram of the structure of four embodiments of the present invention. DETAILED DESCRIPTION
[0025] The concept, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the present invention.
[0026] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0027] See also Figure 1 , 2 , 3, and 4 are schematic diagrams of preferred embodiments of the present invention. The present invention relates to a brake clutch device, which includes a core shaft 1, a first working piece 2, a second working piece 3, a slider 4, a spring 5, and a brake clutch mechanism 6.
[0028] The mandrel 1 has a power input end 11 and a power output end 12, and the mandrel 1 provides a corresponding installation position. The first working piece 2 is arranged on the power input end 11 of the mandrel 1 and is linked to the mandrel 1. External rotation can be transmitted through the first working piece 2 and drive the mandrel 1 to rotate together, or rotation can be transmitted through the mandrel 1 and drive the first working piece 2 to rotate together. The specific method is not limited here. The first working piece 2 has an outer sleeve 21 facing the power output end 12, and a placement cavity is left between the outer sleeve 21 and the mandrel 1. The second working piece 3 is arranged on the power output end 12 of the mandrel 1 and rotates idly relative to the mandrel 1. In this embodiment, the second working piece 3 is further sleeved on the mandrel 1 and limited on the mandrel 1 by a retaining spring to prevent loosening, satisfy the rotation and provide limitation. The slider 4 is sleeved on the mandrel 1 and is located in the placement cavity. The slider 4 has the characteristics of idling and axial sliding relative to the mandrel 1. The spring 5 is a spiral spring. The spring 5 is sleeved on the mandrel 1 and is located in the placement cavity. The placement cavity allows the spring 5 to rotate freely and expand linearly without deformation. One end of the spring 5 is fixedly connected to the slider 4, and the other end of the spring 5 is fixedly connected to the second working piece 3. The brake clutch mechanism 6 connects the first working piece 2 and the slider 4 to achieve the connection or disconnection of the first working piece 2 and the slider 4. When the first working piece 2 and the slider 4 are not connected, the first working piece 2 and the mandrel 1 rotate freely together, and the slider 4, the spring 5 and the second working piece 3 do not rotate. When the first working piece 2 and the slider 4 are connected together through the action of the brake clutch mechanism 6, the first working piece 2 will drive the slider 4 to rotate together, and the rotation of the slider 4 causes the spring 5 to contract in the spiral direction or expand in the opposite direction; when the spring contracts, it tightens the mandrel 1 to achieve the clamping of the mandrel; and when the spring expands, it clamps the first working piece 2 and the second working piece 3. Whether it is contraction and clamping or expansion and clamping, the first working piece 2 and the second working piece 3 can be rotated together to complete the torque transmission and achieve the clutch effect. When either the first working piece 2 or the second working piece 3 is fixed, the device will become a brake. The spring binding can amplify the friction torque, that is, the more spring coils there are, the greater the amplified torque multiple is, thus achieving the transmission of small volume and large torque.
[0029] See also Figure 1 , 2 As shown in Figures 3 and 4, in this embodiment, the first working piece 2 is a sleeve structure, which is convenient for assembly and production. An inner step 22 is provided inside the first working piece 2, and the inner step 22 leans against the slider 4. The inner step 22 provides a working position and even meets the assembly of the brake clutch mechanism 6. In the figure, the core shaft 1 is provided with a corresponding shoulder to cooperate with the spring 5 to hold the operation, and the slider 4 and the second working piece 3 are placed on both sides of the shoulder. The outer sleeve 21 of the first working piece 2 and the shoulder limit the spring 5 to prevent the spring 5 from deforming, ensuring stable and effective operation.
[0030] See also Figure 1 , 2As shown, in this embodiment, the first working piece 2 and the slider 4 are engaged by a snap-fit connection. The first working piece 2 is fastened to the core shaft 1, and a brake clutch mechanism 6 is assembled on the first working piece 2. The brake clutch mechanism 6 has a buckle 61 and a reset member 62. A buckle groove 41 is provided on the slider 4. The buckle 61 is inserted into the buckle groove 41 to achieve engagement between the first working piece 2 and the slider 4, and a transmission connection is obtained, so that the first working piece 2 drives the slider 4 to rotate. The buckle 61 in the figure is axially retracted, and the reset member 62 is preferably a compression spring. The reset member 62 is sleeved on the buckle 61. When the buckle 61 is inserted into the buckle groove 41, the reset member 62 is compressed and stores force. When the buckle 61 exits the buckle groove 41, the reset member 62 gives the buckle 61 an auxiliary force to exit the buckle groove 41, thereby resetting the buckle 61 and effectively supporting the buckle 61 to prevent the buckle 61 from being accidentally inserted into the buckle groove 41. As shown Figure 1 As shown, the buckle 61 is manually driven to be inserted into or withdrawn from the buckle slot 41, and the handle connected to the buckle 61 protrudes from the first working member 2 so as to manually operate the buckle 61 to be inserted or withdrawn. Figure 1 As shown, the buckle 61 is electrically driven to be inserted into or withdrawn from the buckle slot 41. Further preferably, the buckle 61 is electromagnetically driven to be inserted into or withdrawn from the buckle slot 41. The buckle 61 is a magnetic conductor, and a magnetic field is generated by energizing the electromagnetic coil to push the buckle 61 into the buckle slot 41. When the electromagnetic coil is powered off, the buckle 61 is released. Under the action of the reset member 62, the buckle 61 automatically withdraws from the buckle slot 41, thereby separating the first working member 2 from the slider 4.
[0031] See also Figure 3 As shown, in this embodiment, the first working piece 2 and the slider 4 are frictionally engaged by face contact, the first working piece 2 is tightly connected to the core shaft 1, and a brake clutch mechanism 6 is arranged on the first working piece 2. The brake clutch mechanism 6 is a permanent magnetic brake clutch structure, which is composed of a permanent magnet and a coil, and the slider 4 is a magnetic conductor. When the coil is not energized, the permanent magnet adsorbs the slider 4 and presses it against the inner step 22 of the first working piece 2, and friction engagement is obtained, so that the first working piece 2 drives the slider 4 to rotate. When the coil is energized, a magnetic flux in the opposite direction to the permanent magnet is generated and the magnetic flux of the permanent magnet is offset, the slider 4 is released, and the spring 5 pulls the slider 4 back to its original position, so that the first working piece 2 is separated from the slider 4.
[0032] See also Figure 4As shown, in this embodiment, the first working piece 2 and the slider 4 are engaged by surface friction, the first working piece 2 is sleeved with the core shaft 1 through a spline structure, and the brake clutch mechanism 6 produces an axial push to move the first working piece 2, so as to push the first working piece 2 to fit closely to the slider 4. The brake clutch mechanism 6 can be an external manipulator, a power cylinder or a magnetic structure, etc., as long as it can push the first working piece 2 to move. At this time, a reset spring 7 is provided between the first working piece 2 and the core shaft 1. When the brake clutch mechanism 6 cancels the push on the first working piece 2, the reset spring 7 gives the first working piece 2 a reverse movement force, so as to reset the first working piece 2 and effectively support the first working piece 2 to prevent the first working piece 2 from accidentally moving close to the slider 4.
[0033] The present invention utilizes the spring to contract in the spiral direction or expand in the reverse direction to achieve the braking and clutching effect, breaking the limitation that the radial size must be enlarged to increase the torque of the brakes and clutches currently on the market, that is, the torque is proportional to the radial size, and proposes the concept that the torque is proportional to the axial size, so as to achieve small radial size and large torque output. During operation, the first working piece 2 and the second working piece 3 can interchange their roles during the working process, and the torque can be transmitted in both directions. The structure is extremely simple, small in size, large in torque transmission, stable in performance, good in consistency, low in energy consumption, long in service life, can linearly adjust the torque, react quickly, and is easy to install, not prone to errors, and permanently maintains high torque transmission, thereby obtaining a spring-wound braking and clutching device.
[0034] Although the preferred specific embodiments of the present invention are described above in conjunction with the accompanying drawings, the present invention should not be limited to the structures and operations that are exactly the same as the above descriptions and drawings. For those skilled in the art, many equivalent improvements and changes can be made to the above embodiments through logical analysis, reasoning or limited experiments without exceeding the concept and scope of the present invention, but these improvements and changes should all fall within the scope of protection required by the present invention.
Claims
1. A brake clutch device, characterized in that: Included A core shaft (1), the core shaft (1) having a power input end (11) and a power output end (12); a first working piece (2), the first working piece (2) being arranged on the power input end (11) of the core shaft (1) and being linked with the core shaft (1); the first working piece (2) having an outer sleeve (21) facing the power output end (12), and an accommodation cavity being left between the outer sleeve (21) and the core shaft (1); A second working piece (3), the second working piece (3) being arranged on the power output end (12) of the core shaft (1) and idling relative to the core shaft (1); A slider (4), the slider (4) being sleeved on the core shaft (1) and being located in the receiving cavity, the slider (4) having the characteristics of free rotation and axial sliding relative to the core shaft (1); A spring (5), wherein the spring (5) is a coil spring, the spring (5) is sleeved on the core shaft (1) and is located in a placement cavity, the placement cavity allows the spring (5) to rotate freely and to extend and retract linearly without deformation, one end of the spring (5) is fixedly connected to the slider (4), and the other end of the spring (5) is fixedly connected to the second working piece (3); a corresponding shoulder is provided on the core shaft (1) to cooperate with the spring (5) for clamping operation, and the slider (4) and the second working piece (3) are respectively arranged on both side ends of the shoulder, and the outer sleeve (21) of the first working piece (2) and the shoulder restrict the spring (5); A brake clutch mechanism (6) is provided, wherein the brake clutch mechanism (6) connects the first working member (2) and the slider (4) to achieve engagement or disconnection of the first working member (2) and the slider (4).
2. A brake clutch device according to claim 1, characterized in that: The first working piece (2) is a sleeve structure, and an inner step (22) is provided inside the first working piece (2), and the inner step (22) leans against the sliding block (4).
3. A brake clutch device according to claim 1 or 2, characterized in that: The first working piece (2) and the slider (4) are engaged with each other by means of a snap-fit, the first working piece (2) is tightly connected to the core shaft (1), and a brake clutch mechanism (6) is arranged on the first working piece (2), the brake clutch mechanism (6) comprises a buckle (61) and a reset member (62), a buckle groove (41) is arranged on the slider (4), the buckle (61) is inserted into the buckle groove (41) to achieve engagement between the first working piece (2) and the slider (4), and the reset member (62) provides an auxiliary force for the buckle (61) to withdraw from the buckle groove (41).
4. A brake clutch device according to claim 1 or 2, characterized in that: The first working piece (2) and the slider (4) are engaged with each other by surface friction, the first working piece (2) is tightly connected to the core shaft (1), and a braking clutch mechanism (6) is arranged on the first working piece (2). The braking clutch mechanism (6) is a permanent magnet braking clutch structure, which is composed of a permanent magnet and a coil combination structure, and the slider (4) is a magnetic conductor.
5. A brake clutch device according to claim 1 or 2, characterized in that: The first working piece (2) and the slider (4) are frictionally engaged with each other through surface contact, the first working piece (2) is sleeved on the core shaft (1) through a spline structure, and the braking clutch mechanism (6) is used to push the first working piece (2) to fit closely against the slider (4).
6. A brake clutch device according to claim 3, characterized in that: The insertion buckle (61) is manually driven to be inserted into or withdrawn from the buckle slot (41).
7. A brake clutch device according to claim 3, characterized in that: The insert buckle (61) is electrically driven to be inserted into or withdrawn from the buckle slot (41).
8. A brake clutch device according to claim 7, characterized in that: The insert buckle (61) is electromagnetically driven to be inserted into or withdrawn from the buckle slot (41), and the insert buckle (61) is a magnetic conductor.