CN216842890U - One-way torque-changing rotary damper - Google Patents
One-way torque-changing rotary damper Download PDFInfo
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- CN216842890U CN216842890U CN202220508595.1U CN202220508595U CN216842890U CN 216842890 U CN216842890 U CN 216842890U CN 202220508595 U CN202220508595 U CN 202220508595U CN 216842890 U CN216842890 U CN 216842890U
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Abstract
The utility model relates to the technical field of rotary dampers, and provides a one-way torque-variable rotary damper, which comprises a shell, wherein a screw rod and a nut are arranged on the shell, a first guide plate is fixedly arranged on the nut, the first guide plate is arranged on the shell in a sliding manner, a plurality of guide rods are vertically arranged on the first guide plate, and the guide rods are arranged in parallel with the screw rod; the guide rod is sleeved with a spring, the spring is located on one side of the first guide plate, and the first guide plate compresses the spring after sliding along the guide rod. Through the technical scheme, the problems that multi-circle rotation synchronous variable damping cannot be realized, damping force is small and the influence of ambient temperature is large in the prior art are solved.
Description
Technical Field
The utility model relates to a rotary damper technical field, it is specific, relate to one-way change moment of torsion rotary damper.
Background
Currently, the rotary dampers on the market are various, including torsion spring type rotary dampers, rotary dampers using damping oil as a medium, and fixed value dampers designed by using friction force. As for the torsion spring type damper, it is difficult to realize multi-turn damping variation and large torque control in a limited space; the rotary damper using damping oil as a medium is generally small in torque and greatly influenced by ambient temperature, and is mainly suitable for buffering and decelerating small parts. While a fixed-value damper designed by using friction force cannot provide a variable damping effect with large torque. The existing rotary damper can not realize multi-turn rotation synchronous variable damping, has small damping force and is greatly influenced by the environmental temperature.
SUMMERY OF THE UTILITY MODEL
The utility model provides a rotatory damper of one-way variable torque has solved unable realization multiturn rotatory synchronous variable damping in the correlation technique, damping force is less and influenced big problem by ambient temperature.
The technical scheme of the utility model as follows:
the guide device comprises a shell, wherein a screw rod and a nut are arranged on the shell, a first guide plate is fixedly arranged on the nut, the first guide plate is arranged on the shell in a sliding manner, a plurality of guide rods are vertically arranged on the first guide plate, and the guide rods are arranged in parallel with the screw rod; the guide rod is sleeved with a spring, the spring is located on one side of the first guide plate, and the first guide plate compresses the spring after sliding along the guide rod.
The spring is arranged between the first guide plate and the second guide plate, one end of the guide rod is perpendicularly connected with the second guide plate, the second guide plate is arranged on the shell in a sliding mode, and the spring is located between the first guide plate and the second guide plate.
The buffer mechanism comprises a wearing plate which is coaxially and rotatably arranged with the screw rod, the wearing plate is arranged on one side, away from the first guide plate, of the second guide plate, and a friction plate is further arranged on one side, facing the wearing plate, of the shell.
The wear plate is characterized in that a sliding groove is formed in the screw rod, a sliding shaft is sleeved on the screw rod and coaxially rotates with the screw rod through a sliding key, and the wear plate is coaxially connected with the sliding shaft.
The second guide plate is sleeved outside the sliding shaft, and two ends of the second guide plate are limited by a wear plate and an elastic check ring respectively.
The sliding shaft and the wearing plate are both provided with screw holes and connected through bolts.
The two ends of the screw rod are rotatably arranged on the shell through bearings, the screw rod is hollow, and the two ends of the screw rod are flat-mouth structures.
The shell is made of aluminum alloy.
The first guide plate and the second guide plate are provided with notches, and the notches are clamped outside the shell.
The utility model discloses a theory of operation and beneficial effect do:
1. in the utility model, the external power source drives the screw rod to rotate, the first guide plate moves towards the second guide plate to compress the spring, then under the pressure action of the spring, the second guide plate moves towards the direction away from the first guide plate and extrudes the wearing plate, and the sliding shaft rotates to drive the wearing plate to rotate, namely the wearing plate rotates and moves towards the friction plate, so that the friction resistance is generated between the friction plate and the wearing plate, the screw nut pair continuously rotates, the positive pressure between the wearing plate and the friction plate is gradually increased, and meanwhile, the wearing plate also synchronously rotates, so that the generated friction torque is larger and larger; when the spring reaches the maximum compression amount, the damping force generated by the screw-nut pair is also maximum at the moment. Then the screw rod rotates reversely under the action of external power, the friction resistance between the friction plate and the wearing plate is reduced and even disappears finally, and the torque is correspondingly changed accordingly.
The damper can realize multi-turn rotation in a small space and provide large variable damping, and has the characteristics of small influence of environmental temperature, high reliability and the like. The rotary damper acts on an external part, and can better realize the effect that the speed of the part is reduced from high speed to low speed or even to zero. Meanwhile, the final spring is in the maximum elastic force state, namely the damping force is maximum, so that impact can be avoided in the process of rapid change of the component speed.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the internal structure of the housing of the present invention;
FIG. 3 is a schematic sectional view of the present invention;
FIG. 4 is a schematic view of the housing structure of the present invention;
FIG. 5 is a schematic view of the structure of the screw rod and the sliding shaft of the present invention;
FIG. 6 is a schematic view of the sliding shaft structure of the present invention;
fig. 7 is a schematic diagram of a second guide plate structure of the present invention;
figure 8 is a schematic view of the wear plate structure of the present invention;
fig. 9 is a schematic structural view of the elastic retainer ring of the present invention;
fig. 10 is a schematic structural view of the flange shaft sleeve of the present invention;
in the figure: 1-shell, 2-screw rod, 3-nut, 4-first guide plate, 5-guide rod, 6-spring, 7-second guide plate, 8-buffer mechanism, 9-wearing plate, 10-friction plate, 11-chute, 12-sliding shaft, 13-sliding key, 14-flange shaft sleeve, 15-elastic retainer ring and 16-notch.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive work, are related to the scope of the present invention.
As shown in fig. 1 to 10, the utility model provides a one-way torque-variable rotary damper, which comprises a housing 1, wherein a screw rod 2 and a nut 3 are arranged on the housing 1, a first guide plate 4 is fixedly arranged on the nut 3, the first guide plate 4 is slidably arranged on the housing 1, a plurality of guide rods 5 are vertically arranged on the first guide plate 4, and the guide rods 5 are arranged in parallel with the screw rod 2; the guide rod 5 is sleeved with a spring 6, the spring 6 is located on one side of the first guide plate 4, and the first guide plate 4 compresses the spring 6 after sliding along the guide rod 5.
In this embodiment, the screw rod 2 on the housing 1 can rotate along with external power, the nut 3 matched with the screw rod 2 limits the circumferential rotation of the nut through the first guide plate 4, and only can axially move along with the rotation of the screw rod 2, and the first guide plate 4 only can axially move because the first guide plate 4 is arranged on the guide rod 5, so that the nut 3 drives the first guide plate 4 to axially move. When moving, the compression spring 6 generates resistance. The nut 3 has a T-shaped axial cross section and is screwed to the first guide plate 4 by means of the flange.
Further, still include second deflector 7, the one end and the perpendicular connection of second deflector 7 of guide bar 5, second deflector 7 slides and sets up on casing 1, and spring 6 is located between first deflector 4 and the second deflector 7, still is provided with buffer gear 8 between second deflector 7 and the casing 1.
In this embodiment, the second guide plate 7 and the first guide plate 4 are disposed in parallel, are both perpendicular to the screw rod 2, and both can slide along the housing 1. The spring 6 is positioned between the first guide plate 4 and the second guide plate 7, when the first guide plate 4 moves to compress the spring 6, the other end of the spring 6 compresses the second guide plate 7 to move in a direction away from the first guide plate 4, and the second guide plate 7 presses the buffer mechanism 8.
Further, the buffer mechanism 8 comprises a wearing plate 9 which is coaxially and rotatably arranged with the screw rod 2, the wearing plate 9 is arranged on one side of the second guide plate 7 far away from the first guide plate 4, and a friction plate 10 is further arranged on one side of the shell 1 facing the wearing plate 9.
In this embodiment, the wear plate 9 and the friction plate 10 are both annular, the second guide plate 7 presses the wear plate 9, and the wear plate 9 and the friction plate 10 contact and rub to generate a friction force, thereby increasing the damping torque. The friction plate 10 is made of a non-metal wear-resistant material and is fixed on the damper shell 1 through a positioning hole by an inner hexagonal socket head cap screw.
Furthermore, a sliding groove 11 is arranged on the screw rod 2, a sliding shaft 12 is sleeved on the screw rod 2, the sliding shaft 12 and the screw rod 2 rotate coaxially through a sliding key 13, and the wearing plate 9 and the sliding shaft 12 are coaxially connected.
In this embodiment, the screw rod 2 is provided with a sliding slot 11 along the axial direction, the sliding shaft 12 is provided with a sliding key 13 matched with the sliding slot 11, so that the sliding shaft 12 can rotate synchronously with the screw rod 2, and the wear plate 9 is fixedly connected with the sliding shaft 12 and rotates synchronously with the screw rod 2. When the screw rod 2 rotates, the rotation of the sliding shaft 12 and the axial movement of the second guide plate 7 sleeved outside the sliding shaft 12 are not interfered with each other, so that the second guide plate 7 can move to extrude the wearing plate 9, the wearing plate 9 can rotate to contact the friction plate 10, and the friction force is increased.
Further, the second guide plate 7 is sleeved outside the sliding shaft 12, and two ends of the second guide plate 7 are limited by the abrasion plate 9 and the elastic retainer ring 15 respectively.
In this embodiment, the two ends of the second guide plate 7 are blocked by the wear plate 9 and the circlip 15 to limit the axial displacement, so that the positions of the second guide plate 7 and the slide shaft 12 are relatively fixed.
Further, screw holes are formed in the sliding shaft 12 and the wear plate 9, and the sliding shaft 12 is connected with the wear plate 9 through bolts.
In this embodiment, the thickness of the position of the abrasion plate 9 close to the center of the circle is smaller than the thickness of the edge, and the screw hole is arranged at the thinner position close to the center, so that a space can be provided for the end of the bolt, and the bolt head is prevented from extending out to influence the contact between the abrasion plate 9 and the friction plate 10. The wearing plate 9 is in threaded connection with the sliding shaft 12 through bolts, so that the wearing plate 9 and the sliding shaft 12 rotate synchronously and can be conveniently disassembled and assembled.
Further, the two ends of the screw rod 2 are rotatably arranged on the shell 1 through bearings, the screw rod 2 is hollow inside, and the two ends of the screw rod are flat-mouth structures.
In the embodiment, the screw rod 2 is hollow, the weight of the screw rod is greatly reduced under the condition of ensuring the strength, and the flat opening is convenient for a subsequent wrench to install and debug the damper.
Further, the shell 1 is made of aluminum alloy.
In the embodiment, the damper shell 1 is made of high-strength aluminum alloy, bears main load, and has a hollow structure in the middle, so that the self weight is greatly reduced under the condition of ensuring the strength; and bearing holes are formed in the two ends of the screw rod 2 for mounting the nuts 3 of the screw rod.
Further, the first guide plate 4 and the second guide plate 7 are both provided with notches 16, and the notches 16 are clamped outside the shell 1.
In this embodiment, the notches 16 at the upper ends of the first guide plate 4 and the second guide plate 7 are used for clamping the upper plate of the housing 1, and the housing 1 serves as a guide rail along which the first guide plate 4 and the second guide plate 7 slide, thereby ensuring the stability of the whole device.
An external power source drives the screw rod 2 to rotate, the first guide plate 4 moves towards the second guide plate 7 to compress the spring 6, then under the pressure action of the spring 6, the second guide plate 7 moves towards the direction far away from the first guide plate 4 and extrudes the wearing plate 9, meanwhile, the sliding shaft 12 rotates to drive the wearing plate 9 to rotate, namely, the wearing plate 9 rotates and moves towards the friction plate 10, so that friction resistance is generated between the friction plate 10 and the wearing plate 9, the screw rod 2 and the nut 3 rotate continuously, the positive pressure between the wearing plate 9 and the friction plate 10 is gradually increased, and meanwhile, the wearing plate 9 also rotates synchronously, so that the generated friction torque is larger and larger; when the spring 6 reaches the maximum compression amount, the damping force generated by the screw rod 2 and the nut 3 pair is also maximum. Then the screw rod 2 rotates reversely under the action of external power, the friction resistance between the friction plate 10 and the wearing plate 9 is reduced and even disappears finally, and the moment changes correspondingly.
The damper can realize multi-turn rotation in a small space and provide large variable damping, and has the characteristics of small influence of environmental temperature, high reliability and the like. The rotary damper acts on an external part, and can better realize the effect that the speed of the part is reduced from high speed to low speed or even to zero. Meanwhile, the final spring 6 is in the maximum elastic force state, namely the maximum damping force, so that impact can be avoided in the process of rapid change of the component speed.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The unidirectional torque-variable rotary damper comprises a shell (1) and is characterized in that a screw rod (2) and a nut (3) are arranged on the shell (1), a first guide plate (4) is fixedly arranged on the nut (3), the first guide plate (4) is arranged on the shell (1) in a sliding manner,
a plurality of guide rods (5) are vertically arranged on the first guide plate (4), and the guide rods (5) are parallel to the screw rod (2);
the guide rod (5) is sleeved with a spring (6), the spring (6) is located on one side of the first guide plate (4), and the guide rod (5) slides and then compresses the spring (6) along the first guide plate (4).
2. A unidirectional torque conversion rotary damper according to claim 1, characterized by further comprising a second guide plate (7), one end of said guide rod (5) is perpendicularly connected with said second guide plate (7), said second guide plate (7) is slidably disposed on said housing (1), and said spring (6) is located between said first guide plate (4) and said second guide plate (7).
3. A unidirectional torque conversion rotary damper according to claim 2, characterized in that a damping mechanism (8) is further arranged between the second guide plate (7) and the housing (1), the damping mechanism (8) comprises a wear plate (9) which is coaxially and rotatably arranged with the screw (2), the wear plate (9) is arranged on the side of the second guide plate (7) away from the first guide plate (4), and a friction plate (10) is further arranged on the side of the housing (1) facing the wear plate (9).
4. A unidirectional torque-changing rotary damper according to claim 3, characterized in that the screw rod (2) is provided with a sliding groove (11), the screw rod (2) is sleeved with a sliding shaft (12), the sliding shaft (12) rotates coaxially with the screw rod (2) through a sliding key (13), and the wearing plate (9) is coaxially connected with the sliding shaft (12).
5. The rotational damper with unidirectional torque conversion according to claim 4, characterized in that the second guide plate (7) is sleeved outside the sliding shaft (12), and two ends of the second guide plate (7) are respectively limited by a wear plate (9) and a circlip (15).
6. A unidirectional torque-conversion rotary damper according to claim 4, characterized in that the sliding shaft (12) and the wear plate (9) are provided with screw holes, and the sliding shaft (12) and the wear plate (9) are connected by bolts.
7. The rotational damper with one-way torque change according to claim 1, wherein the two ends of the screw rod (2) are rotatably arranged on the housing (1) through bearings, the screw rod (2) is hollow inside, and the two ends are both flat-mouth structures.
8. The rotational damper with unidirectional torque variation according to claim 1, characterized in that the housing (1) is made of aluminum alloy.
9. A unidirectional torque conversion rotary damper according to claim 2, characterized in that the first guide plate (4) and the second guide plate (7) are provided with notches (16), and the notches (16) are clamped outside the housing (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220508595.1U CN216842890U (en) | 2022-03-09 | 2022-03-09 | One-way torque-changing rotary damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220508595.1U CN216842890U (en) | 2022-03-09 | 2022-03-09 | One-way torque-changing rotary damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216842890U true CN216842890U (en) | 2022-06-28 |
Family
ID=82093904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220508595.1U Active CN216842890U (en) | 2022-03-09 | 2022-03-09 | One-way torque-changing rotary damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216842890U (en) |
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2022
- 2022-03-09 CN CN202220508595.1U patent/CN216842890U/en active Active
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