Mechanism capable of achieving multi-working-mode or gear switching and with self-locking function

Abstract

The utility model provides a self-locking mechanism capable of realizing multi-working mode or gear switching. The self-locking mechanism comprises a zipper combination, a cam combination and a handle combination, protruding structures are arranged on the outer circle of the cam combination, the arc lengths of the protruding structures are different, the protruding structures are arranged at different circumferential positions of the cam combination, the handle combination is arranged above the cam combination, when the operating handle drives the cylindrical structure to be lifted, the starting clamping block is separated from the clamping groove, and the operating handle can be rotated to drive the cylindrical structure to rotate. The cam combination is further driven to rotate; the zipper assembly comprises a clamping ring and a zipper, and when the head clamping block is clamped in different notches, the cam assembly rotates to different positions, so that the switch assembly is in different opening and closing states, and different working modes or gears are controlled.

Description

Technical Field

[0001] The utility model belongs to the field of precision mechanism design of aerospace products, and in particular relates to a mechanism which realizes multi-working modes or gear switching and has self-locking function. Background Art

[0002] A product currently used in a certain aerospace industry requires the ability to switch between multiple working modes, and also has self-locking and anti-misoperation functions. However, the existing product has too few gear positions and cannot meet existing needs.

[0003] Disadvantages: 1. Existing similar products have few gears and cannot meet the needs;

[0004] 2. Existing similar products do not have the function of preventing misoperation;

[0005] 3. Existing similar products do not have self-locking function.

[0006] In view of this situation, it is urgent to develop a mechanism combination that can realize multiple working modes or gear switching and has self-locking function to meet the functional and performance requirements of the product. Utility Model Content

[0007] The utility model proposes a mechanism that realizes multi-working modes or gear switching and has a self-locking function, which solves the problems of the existing products having few gears, no anti-misoperation function and no self-locking function.

[0008] The utility model proposes a self-locking mechanism for realizing multi-working mode or gear switching, comprising: a zipper assembly, a cam assembly and a handle assembly;

[0009] The cam assembly includes N cam pieces, which are annular structures, and a convex structure is arranged on the outer circle. The arc lengths of the convex structures are different and they are arranged at different circumferential positions of the cam assembly. When the cam piece rotates, the outer contour trajectory of the cam piece controls the opening and closing of different switches of the switch assembly, thereby controlling the switching of different working modes or gears. N is an integer greater than 2.

[0010] The handle assembly is arranged above the cam assembly, and the handle assembly includes a slot ring and a rotating handle; the slot ring is fixed on the operating table, and a slot is arranged on the slot ring; one end of the rotating handle is a cylindrical structure sleeved in the cam assembly and connected with the cam assembly key, and the other end is an operating handle; a starting block is arranged at one end of the cylindrical structure close to the operating handle, and when the starting block is stuck in the slot, the operating handle is restricted from rotating; when the operating handle drives the cylindrical structure to be lifted, the starting block is disengaged from the slot, and the rotatable operating handle drives the cylindrical structure to rotate, thereby driving the cam assembly to rotate;

[0011] The zipper assembly includes a clamp ring and a zipper, and the zipper includes a head clamp block;

[0012] The clamping ring is fixed above the cam assembly and rotates with the cam assembly; N notches are provided on the clamping ring;

[0013] When the head clamping block is clamped in different notches, the cam assembly rotates to different positions, so that the switch assembly is in different open and closed states, thereby controlling different working modes or gears.

[0014] Optionally, the zipper includes: a drawstring and a spring;

[0015] The spring is a torsion spring. The head block is rotatably arranged around the rotation axis. One end is connected to a pull rope. By pulling the pull rope, the head block is driven to rotate around the day. One end is lifted to separate the head block from the notch. The other end of the head block is connected to one end of the torsion spring. As one end of the head block is lifted, the other end presses down the torsion spring.

[0016] When the pull rope is released, the head clamping block 5 rotates and resets under the elastic force of the torsion spring and is clamped into the notch.

[0017] Optional, the value of N is 5.

[0018] Optionally, the operating handle is hexagonal.

[0019] Optionally, six sides are designed with curves.

[0020] Optionally, the start block is vertically fixed on the outer circumferential surface of the cylindrical structure.

[0021] Optionally, the start card block is integrally formed with the cylindrical structure.

[0022] Optionally, the rotating handle material is selected from 0Cr17Ni4Cu4Nb martensitic precipitation hardening stainless steel.

[0023] The utility model proposes a mechanism which can realize switching of multiple working modes or gears and has self-locking function. The design of the cam mechanism can realize switching of multiple working modes or gears and meet the needs of aerospace products for more working modes. The card fastener and the card ring on the zipper cooperate to realize the functions of self-locking and resetting, thereby improving product reliability and ensuring the safety of operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Schematic diagram of a self-locking mechanism for realizing multiple working modes or gear switching provided by the utility model Figure 1 ;

[0025] Figure 2 Schematic diagram of a self-locking mechanism for realizing multiple working modes or gear switching provided by the utility model Figure 2 ;

[0026] Figure 3 Schematic diagram of a self-locking mechanism for realizing multiple working modes or gear switching provided by the utility model Figure 3 ;

[0027] Figure 4 A schematic diagram of the handle assembly structure provided by the utility model;

[0028] Figure 5 A schematic diagram of the cam structure provided by the utility model;

[0029] Figure 6 A schematic diagram of the cam assembly structure provided by the utility model;

[0030] Figure 7 The zipper assembly structure provided by the utility model is schematically shown Figure 1 ;

[0031] Figure 8 A schematic diagram of the clamp ring structure provided by the utility model;

[0032] Fig. 9 The zipper assembly structure provided by the utility model is schematically shown Figure 2 ;

[0033] Fig.10 Schematic diagram of switch combination structure;

[0034] Description of reference numerals:

[0035] 1-handle, 2-slot ring, 3-clamp ring, 4-pull rope, 5-head block, 6-spring;

[0036] 11-support rod, 12-spring sheet, 13-round contact, 14-flat contact, 15-cam sheet. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] The following is an explanation of the mechanism for realizing multiple working modes or gear switching and having self-locking provided by the present invention in conjunction with the accompanying drawings.

[0039] like Figure 1-10 As shown, the utility model provides a mechanism for realizing multi-working modes or gear switching and having self-locking function, comprising: a zipper assembly, a cam assembly and a handle assembly.

[0040] The working principle of this mechanism is: the handle combination controls the rotation of the cam combination, the zipper combination controls the self-locking of the cam combination, and the cam combination controls the switching of different working modes or gears.

[0041] The handle assembly is the operating control mechanism for personnel.

[0042] The specific working principle is as follows: when the handle 1 is manually turned, the cam assembly is driven to rotate, thereby switching the working mode of different gears. The slot ring 2 of the handle assembly is designed with a slot that cooperates with the block, thereby limiting the free rotation of the handle 1, ensuring that the handle will not start the working mode due to misoperation when not working. When using the handle, just lift the handle 1 lightly to separate the block from the slot and switch to the required gear.

[0043] The cam assembly is a control mechanism, which is composed of 5 cam pieces.

[0044] The specific working principle is: there is a protruding structural part on the cam, and its outer contour trajectory is not on the same circle when it rotates, thereby achieving different degrees of displacement. In mechanical principles, this displacement can be used as the displacement of various switches to achieve the closing and opening of the switches, and achieve switching between multiple gears or multiple working modes.

[0045] The zipper combination is a safety control mechanism designed to prevent the handle from rotating freely due to accidental contact in the working mode. The working mode or gear switching is restricted by limiting the rotation of the cam combination.

[0046] The specific working principle is: the zipper assembly cooperates with the notch on the collar 3. When working, the head block 5 below the zipper assembly is inserted into the notch on the collar 3. At this time, the collar 3 cannot rotate, thereby limiting the rotation of the cam mechanism connected thereto, and realizing the restriction on the switching of the working mode or gear. When it is necessary to switch the working mode or gear, just pull the pull cord 4 lightly, and the head block 5 on the zipper assembly will be separated from the notch on the collar 3. At this time, turn the handle, and the cam mechanism and the collar 3 will rotate synchronously. To the next working mode or gear, release the pull cord 4. Since the spring 6 is installed in the head block, under the action of the spring force, the head block 5 of the zipper assembly automatically resets and cooperates with the notch on the collar 3 again, locking the collar 3, thereby limiting the rotation of the cam, and achieving the purpose of self-locking.

[0047] Exemplarily, the spring 6 is a torsion spring, and the head block 5 is rotatably arranged around the rotation axis, with one end connected to the pull rope 4. By pulling the pull rope 4, one end of the head block 5 is lifted, and the other end of the head block 5 is connected to one end of the torsion spring. As one end of the head block 5 is lifted, the other end presses down the torsion spring. Therefore, when the pull rope 4 is loosened, the head block 5 rotates and resets under the elastic force of the torsion spring.

[0048] The rotating handle is made of 0Cr17Ni4Cu4Nb martensitic precipitation hardening stainless steel, which has high strength, corrosion resistance, oxidation resistance and weldability, and is rainproof and moisture-proof.

[0049] The rotating handle is designed to be a hexagonal structure with six sides designed with curves to facilitate manual operation.

[0050] For example, the cam assembly in the mechanism provided by the present invention contacts and cooperates with the switch assembly of an aviation product. The aviation product may be any product with multiple working modes.

[0051] like Fig.10 As shown, the switch assembly is a structure of the cam assembly. When the cam piece 15 on the cam assembly rotates, when the protruding position rotates to contact the support rod 11, the support rod 11 is lifted up, driving the support rod 11 to move. The displacement of the support rod 11 drives the spring piece 12 connected to the round contact 13 to elastically deform, and the round contact 13 contacts the flat contact 14, and the switch is turned on. When the protruding position rotates to leave the support rod 11, the support rod 11 loses the thrust of the cam piece 15. At this time, due to the elastic deformation of the spring piece 12, it has a preload force to restore the original state. Under the preload force of the spring piece 12, the round contact is driven to return to the initial position, so that the round contact is separated from the flat contact, and the switch is turned off. This principle can be used to control the on and off of the circuit to achieve the opening and closing of the working mode.

[0052] The above is only a specific embodiment of the utility model, and the utility model is described in detail. The undetailed part is conventional technology. However, the protection scope of the utility model is not limited to this. Any changes or replacements that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. The protection scope of the utility model shall be based on the protection scope of the claims.

Claims

1. A self-locking mechanism for realizing multi-working mode or gear switching, characterized in that: include: Zipper combination, cam combination and handle combination; The cam assembly includes N cam pieces, which are annular structures, and a convex structure is arranged on the outer circle. The arc lengths of the convex structures are different and they are arranged at different circumferential positions of the cam assembly. When the cam piece rotates, the outer contour trajectory of the cam piece controls the opening and closing of different switches of the switch assembly, thereby controlling the switching of different working modes or gears. N is an integer greater than 2. The handle assembly is arranged above the cam assembly, and the handle assembly includes a slot ring and a rotating handle; the slot ring is fixed on the operating table, and a slot is arranged on the slot ring; one end of the rotating handle is a cylindrical structure sleeved in the cam assembly and connected with the cam assembly key, and the other end is an operating handle; a starting block is arranged at one end of the cylindrical structure close to the operating handle, and when the starting block is stuck in the slot, the operating handle is restricted from rotating; when the operating handle drives the cylindrical structure to be lifted, the starting block is disengaged from the slot, and the rotatable operating handle drives the cylindrical structure to rotate, thereby driving the cam assembly to rotate; The zipper assembly includes a clamp ring and a zipper, and the zipper includes a head clamp block; The clamping ring is fixed above the cam assembly and rotates with the cam assembly; N notches are provided on the clamping ring; When the head clamping block is clamped in different notches, the cam assembly rotates to different positions, so that the switch assembly is in different open and closed states, thereby controlling different working modes or gears.

2. The mechanism according to claim 1, characterized in that: Zipper includes: draw cords and springs; The spring is a torsion spring. The head block is rotatably arranged around the rotation axis. One end is connected to a pull rope. By pulling the pull rope, the head block is driven to rotate around the day. One end is lifted to separate the head block from the notch. The other end of the head block is connected to one end of the torsion spring. As one end of the head block is lifted, the other end presses down the torsion spring. When the pull rope is released, the head clamping block (5) rotates and resets under the elastic force of the torsion spring and is clamped into the notch.

3. The mechanism according to claim 1, characterized in that: The value of N is 5.

4. The mechanism according to claim 1, characterized in that: The operating handle is hexagonal.

5. The mechanism according to claim 1, characterized in that: The six sides are designed with curves.

6. The mechanism according to claim 1, characterized in that: The starting block is vertically fixed on the outer circumferential surface of the cylindrical structure.

7. The mechanism according to claim 1, characterized in that: The starting card block is integrally formed with the cylindrical structure.

8. The mechanism according to claim 1, characterized in that The rotating handle material is 0Cr17Ni4Cu4Nb martensitic precipitation hardening stainless steel.

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