Volute spiral spring bearing assembly

Abstract

The utility model discloses a volute spiral spring bearing assembly which is characterized in that a central stand column is arranged on a bearing disc, and a first slot is formed in the peripheral surface of the central stand column; the rotating ring body is arranged on the bearing disc and connected to the outer portion of the center stand column in a sleeving mode. A second slot is formed in the inner circumferential surface of the rotating ring body; a one-way stop structure used for limiting the rotating ring body to rotate in the first one-way rotating direction and allowing the rotating ring body to rotate in the second one-way rotating direction is arranged between the rotating ring body and the bearing disc; the plurality of plug-in ring bodies are mutually sleeved inside and outside and are assembled in the first accommodating space; every two adjacent plug-in ring bodies are matched in a plug-in mode in the first direction, and the adjacent rotating ring body and plug-in ring body are matched in a plug-in mode in the first direction. And a third slot is formed in the inner circumferential surface of each insertion ring body. Compared with the prior art, the volute spiral spring can be borne and contracted, the volute spiral spring is effectively prevented from loosening and freely moving, the contraction elastic force of the volute spiral spring can be adjusted, and the bearing requirements of volute spiral springs with different outer diameters can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of scroll spring processing devices, and particularly relates to a scroll spring bearing assembly. Background Art

[0002] As Figure 1 shown in the figure, a flat scroll spring 7 in the prior art is made of a steel strip. After the scroll spring 7 is processed and formed, it has strong elasticity. During the transfer and transportation process, in order to prevent the scroll spring 7 from freely moving loose under its own elastic force, it is generally fixed by tying with a cable tie. The cable tie is inserted between several winding coils of the scroll spring 7 and locked. If the cable tie is tied loosely, the scroll spring 7 is still likely to move loose, and the effect cannot be achieved. If the cable tie is tied too tightly, the coils of the scroll spring 7 are gathered and pressed together, which is extremely likely to cause irreversible deformation of the scroll spring 7 and affect the performance of the scroll spring 7. Summary of the Utility Model

[0003] In view of the above technical problems, the object of the present utility model is to propose a scroll spring bearing assembly, which can bear the scroll spring, can contract the scroll spring, effectively prevent the scroll spring from freely moving loose, can adjust the elastic force of the scroll spring contraction to effectively protect the scroll spring, and can adapt to the bearing requirements of scroll springs with different outer diameter sizes, and has strong practicability.

[0004] The technical solution of the present utility model is realized as follows: A scroll spring bearing assembly includes a bearing plate, a central column, a rotating ring body, and a plugging ring body;

[0005] The central column is arranged on the bearing plate and has a mating central axis extending in a first direction; a first slot extending in the first direction is provided on the outer peripheral surface of the central column and is used for plugging the first end of the scroll spring.

[0006] The rotating ring body is arranged on the bearing plate and sleeved outside the central column; a first accommodating space for accommodating the scroll spring is formed between the rotating ring body and the central column; a second slot extending in the first direction is provided on the inner peripheral surface of the rotating ring body and is used for plugging the second end of the scroll spring.

[0007] The rotating ring body has a first one-way rotation direction and a second one-way rotation direction around the mating central axis;

[0008] A one-way stop structure for restricting the rotating ring body from rotating in the first one-way rotation direction and allowing it to rotate in the second one-way rotation direction is provided between the rotating ring body and the bearing plate;

[0009] A plurality of the plugging ring bodies are sleeved with each other inside and outside and assembled in the first accommodating space; the adjacent two plugging ring bodies and between the adjacent rotating ring body and the plugging ring body are plugged and matched along the first direction; a second accommodating space for accommodating the scroll spring is formed between the innermost plugging ring body and the central column; a third slot for plugging with the second end of the scroll spring is provided on the inner circumferential surface of each plugging ring body.

[0010] Further, the bearing disc has an annular inner circumferential surface; the rotating ring body is arranged in the space enclosed by the annular inner circumferential surface; the one-way stopping structure includes a ratchet groove, a ratchet pawl, and an elastic member; a plurality of the ratchet grooves are arranged at intervals on the annular inner circumferential surface; the ratchet pawl is rotatably connected to the rotating ring body and has a stopping end that cooperates with the ratchet groove; the elastic member is arranged between the rotating ring body and the ratchet pawl and has an elastic acting force that drives the stopping member to move towards the inner circumferential surface of the bearing disc.

[0011] Further, the elastic member is a spring piece; the spring piece is plugged and matched with the rotating ring body along the first direction; the elastic end of the spring piece is arranged in cooperation with the ratchet pawl.

[0012] Further, a plugging protrusion is provided on the outer circumferential surface of each plugging ring body; the plugging protrusion of the outermost plugging ring body is plugged and matched with the second slot along the first direction; and the plugging protrusions of the adjacent plugging ring bodies and the third slot are plugged and matched along the first direction.

[0013] Further, the bearing assembly includes a cover body; the cover body is threadedly connected to the bearing disc and has a covering state of covering the first accommodating space; in the covering state, the cover body cooperates with each plugging ring body to limit the movement of the plugging ring body along the first direction.

[0014] Further, an observation window is provided on the cover body corresponding to the first accommodating space.

[0015] Due to the application of the above technical solutions, the utility model has the following advantages compared with the prior art:

[0016] 1. By the combined use of the rotating ring body and the one-way stopping structure in the utility model, the scroll spring is accommodated and carried inside the rotating ring body, and the two ends of the scroll spring are respectively plugged and fixed to the rotating ring body and the central column. By driving the rotating body to rotate along the second one-way rotation direction, the scroll spring can be driven to contract, and the contraction force of the scroll spring can be adjusted. Through the combined use of the one-way stopping structure, the movement of the rotating ring body towards the first one-way rotation direction can be restricted, so that the rotating ring body and the scroll spring can be fixed at a preset position. The combination of the above methods can carry the scroll spring, can contract the scroll spring, effectively prevent the scroll spring from loosening and moving freely, and can adjust the elastic force of the scroll spring during contraction, so as to effectively protect the scroll spring, and has strong practicability.

[0017] 2. By using a number of plug-in ring bodies in cooperation, by increasing or decreasing the number of plug-in ring bodies, the load-bearing requirements and contraction requirements of scroll springs with different outer diameter sizes can be met. The assembly between the several plug-in ring bodies and between the outermost plug-in ring body and the rotating ring body is carried out by plugging, making the disassembly, replacement and assembly of each plug-in ring body convenient, effectively meeting the assembly requirements of scroll springs with different outer diameter sizes.

[0018] 3. By using the cover body in cooperation, the scroll spring located in the first accommodation space or the second accommodation space can be protected effectively. At the same time, when the cover body is in the closed state, it can limit the movement of each plug-in ring body to prevent the plug-in ring body from detaching, with strong practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The technical solution of the present utility model will be further described below in conjunction with the drawings:

[0020] Figure 1 is a schematic structural diagram of a scroll spring in the prior art;

[0021] Figure 2 is a three-dimensional structural diagram of the overall structure of the present utility model;

[0022] Figure 3 is Figure 2 a schematic cross-sectional view structure diagram;

[0023] Figure 4 is Figure 2 an exploded view;

[0024] Figure 5 is a schematic top view structure diagram of the scroll spring located in the second accommodation space;

[0025] Figure 6 is Figure 5 an enlarged view at A in;

[0026] Figure 7 is a three-dimensional structural diagram of the rotating ring body, ratchet pawl and elastic piece of the present utility model;

[0027] Figure 8 is a three-dimensional structural diagram of the bearing plate of the present utility model;

[0028] Figure 9 is a schematic top view structure diagram of the scroll spring located in the first accommodation space

[0029] Wherein: 1. Carrier plate; 11. Annular inner peripheral surface; 12. Ratchet groove; 13. Central column; 14. First slot; 2. Rotating ring body; 21. Second slot; 22. First accommodating space; 23. Insertion channel; 3. Ratchet pawl; 4. Elastic member; 5. Insertion ring body; 51. Insertion protrusion; 52. Third slot; 53. Second accommodating space; 6. Cover body; 61. Observation window; 7. Volute spring; 71. Insertion and fixing section; 8. Retaining piece. Detailed implementation manner

[0030] The following elaborates on the preferred embodiments of the present utility model in conjunction with the accompanying drawings, so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making the protection scope of the present utility model more clearly defined.

[0031] As Figure 2-9 Shown is a volute spring carrier assembly according to this embodiment, which is applicable to the carrier of the volute spring 7. The volute spring 7 in this embodiment is a conventional component of the prior art, and both ends of the volute spring 7 are formed with insertion and fixing sections 71 by bending. The carrier assembly includes components such as a carrier plate 1, a central column 13, a rotating ring body 2, and an insertion ring body 5. The central column 13 is coaxially arranged on the carrier plate 1 and has a mating central axis extending in the first direction. The first direction in this embodiment is defined as the up and down direction. The bottom of the above-mentioned central column 13 is fixedly connected to the carrier plate 1, and the top forms a free end. A first slot 14 extending in the first direction and used for inserting the first end of the volute spring 7 is machined on the outer peripheral surface of the central column 13. The upper end of the first slot 14 forms a socket so that the insertion and fixing section 71 of the first end of the volute spring 7 can be inserted into the first slot 14. According to actual needs, a plurality of the first slots 14 can be arranged along the circumferential direction of the central column 13.

[0032] The above-mentioned rotating ring body 2 is installed on the bearing disc 1 and sleeved outside the central column 13, and the rotating ring body 2 and the central column 13 are coaxially arranged. A first accommodating space 22 for accommodating the scroll spring 7 is formed between the rotating ring body 2 and the central column 13. Specifically, an assembly concave cavity is formed on the bearing disc 1. The side wall of the assembly concave cavity forms the annular inner peripheral surface 11 of the bearing disc 1. The aforementioned central column 13 and the rotating ring body 2 are arranged in the assembly concave cavity. The outer peripheral surface of the rotating ring body 2 is connected with the annular inner peripheral surface 11 in a clearance fit manner, so that the rotating ring body 2 can rotate around the mating central axis relative to the central column 13 and the bearing disc 1. A retaining piece 8 is installed on the bearing disc 1 above the rotating ring body 2 by screws. Through the blocking of the retaining piece 8, the rotating ring body 2 can be restricted from moving out of the assembly concave cavity. A second slot 21 extending in the first direction and used for inserting the second end of the scroll spring 7 is machined on the inner peripheral surface of the rotating ring body 2. The inserted and fixed section 71 of the first end of the scroll spring 7 is inserted into the second slot 21. Through the above structural design, the rotating ring body 2 has a first one-way rotation direction and a second one-way rotation direction around the mating central axis. The above-mentioned first one-way rotation direction and the second one-way rotation direction are two opposite directions. For example, the first one-way rotation direction is clockwise and the second one-way rotation direction is counterclockwise. A one-way stop structure for restricting the rotating ring body 2 from rotating in the first one-way rotation direction and allowing it to rotate in the second one-way rotation direction is arranged between the rotating ring body 2 and the bearing disc 1. When the scroll spring 7 is assembled into the first accommodating space 22, its first end can be inserted into the first slot 14 and its second end can be inserted into the second slot 21.

[0033] In this embodiment, several plugging ring bodies 5 are sleeved with each other inside and outside and assembled in the first accommodation space 22. The above-mentioned plugging ring bodies 5 are coaxially arranged and connected with a clearance fit. The adjacent two plugging ring bodies 5 and the adjacent rotating ring body 2 and plugging ring body 5 are plugged and matched along the first direction. Specifically, a third slot 52 for plugging with the second end of the scroll spring 7 is machined on the inner circumferential surface of each plugging ring body 5. A plugging protrusion 51 is machined on the outer circumferential surface of each plugging ring body 5. Among them, the plugging protrusion 51 of the outermost plugging ring body 5 is plugged and matched with the second slot 21 along the first direction. And the plugging protrusion 51 and the third slot 52 of the adjacent plugging ring bodies 5 are plugged and matched along the first direction. Through the above structural design, after the plugging and assembling are completed, a limiting fit is formed between the plugging ring bodies 5 and between the plugging ring body 5 and the rotating ring body 2. When the rotating ring body 2 rotates, each plugging ring body 5 can rotate synchronously. After the assembly is completed, a second accommodation space 53 for accommodating the scroll spring 7 is formed between the innermost plugging ring body 5 and the central column 13. By increasing or decreasing the number of plugging ring bodies 5, the size of the second accommodation space 53 can be changed, so as to accommodate scroll springs 7 with different outer diameters. When the scroll spring 7 is assembled into the second accommodation space 53, its first end can be inserted into the first slot 14, and its second end can be inserted into the third slot 52.

[0034] In this embodiment, the aforementioned one-way stop structure includes a ratchet groove 12, a ratchet pawl 3, and an elastic member 4. Several ratchet grooves 12 are formed at intervals on the annular inner circumferential surface 11. The ratchet pawl 3 is rotatably connected to the rotating ring body 2 and has a stop end that cooperates with the ratchet groove 12. The structures and functions of the above-mentioned ratchet pawl 3 and ratchet groove 12 are all prior arts. When the rotating ring body 2 rotates in the first one-way rotation direction, the ratchet pawl 3 is engaged in the ratchet groove 12 to limit the continuous rotation of the rotating ring body 2. The aforementioned elastic member 4 is installed between the rotating ring body 2 and the ratchet pawl 3 and has an elastic acting force that drives the stop member to move towards the inner circumferential surface of the carrier plate 1. In this embodiment, limited by the space size of the overall structure, the elastic member 4 is preferably a spring piece. The spring piece is a conventional structure of the prior art and is formed by bending. It has a fixed section and an elastic end bent from one end of the fixed section. A plugging channel 23 extending in the first direction is machined at a predetermined position of the rotating ring body 2. The spring piece is plugged and matched with the plugging channel 23 along the first direction. After the assembly is completed, the elastic end of the spring piece cooperates with the ratchet pawl 3 to provide elastic force to the ratchet pawl 3. By pulling out the spring piece from the rotating ring body 2, the ratchet pawl 3 can be separated from the ratchet groove 12, so that the rotating ring body 2 can rotate freely.

[0035] The bearing component in this embodiment includes a cover body 6. The cover body 6 is threadedly connected to the bearing plate 1 and has a covering state for covering the first accommodation space 22. When the cover body 6 is in the covering state, the cover body 6 cooperates with each plugging ring body 5 to restrict the movement of the plugging ring body 5 in the first direction. At the same time, in this covering state, the cover body 6 can cover the second accommodation space 53, so as to be able to cover the scroll spring 7 located in the first accommodation space 22 or the scroll spring 7 in the second accommodation space 53 for protection. An observation window 61 is machined on the above-mentioned cover body 6 corresponding to the first accommodation space 22. Through this observation window 61, the storage condition of the scroll spring 7 located in the first accommodation space 22 can be observed, and at the same time, the storage condition of the scroll spring 7 located in the first accommodation space 22 can also be observed.

[0036] During specific use, when the plugging ring body 5 is not adopted, the scroll spring 7 is assembled into the first accommodation space 22. The first end of the scroll spring 7 is inserted into the first slot 14, and the second end is inserted into the second slot 21 to fix both ends of the scroll spring 7. The rotating ring body 2 is driven to rotate in the second one-way rotation direction, so as to drive the second end of the scroll spring 7 to move, thereby driving the scroll spring 7 to contract and adjusting the contraction force of the scroll spring 7. The pawl 3 is engaged into the corresponding ratchet tooth groove 12 to restrict the rotating ring body 2 from moving in the first one-way rotation direction, so as to be able to fix the rotating ring body 2 and the scroll spring 7 at a preset position to prevent the scroll spring 7 from loosening and freely moving. The elastic piece is pulled out, and the pawl 3 is toggled to disengage from the ratchet tooth groove 12, so that the rotating ring body 2 can rotate in the first one-way rotation direction, thereby being able to switch the scroll spring 7 from the contracted state to the loose state, so as to facilitate taking out the scroll spring 7 from the first accommodation space 22. In the above manner, the scroll spring 7 can be carried, the scroll spring 7 can be contracted, effectively preventing the scroll spring 7 from loosening and freely moving, and the elastic force of the contraction of the scroll spring 7 can be adjusted to effectively protect the scroll spring 7, with strong practicability.

[0037] When it is necessary to use the plug-in ring body 5, a certain number of plug-in ring bodies 5 are inserted into the first accommodation space 22 in sequence. The outer plug-in ring body 5 is inserted into the second slot 21 through the plug-in protrusion 51, and the adjacent two plug-in ring bodies 5 are inserted and cooperated with each other through the plug-in protrusion 51 and the third slot 52. The scroll spring 7 is assembled into the second accommodation space 53 formed by the innermost plug-in ring body 5. The first end of the scroll spring 7 is inserted into the first slot 14, and the second end is inserted into the third slot 52 to fix both ends of the scroll spring 7. The rotating ring body 2 is driven to rotate along the second one-way rotation direction so as to drive each plug-in ring body 5 to rotate accordingly, and then drive the second end of the scroll spring 7 to move, thereby driving the scroll spring 7 to contract. The remaining operation methods are the same as the foregoing content and will not be elaborated here. By increasing or decreasing the number of plug-in ring bodies 5, the load-bearing requirements and contraction requirements of the scroll spring 7 with different outer diameters can be met. The several plug-in ring bodies 5 and between the outermost plug-in ring body 5 and the rotating ring body 2 are assembled by plugging, making the disassembly and replacement of each plug-in ring body 5 convenient and effectively meeting the assembly requirements of the scroll spring 7 with different outer diameters.

[0038] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification of the present invention, or directly or indirectly applied to other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A scroll spring bearing assembly, comprising a bearing plate, a central column, a rotating ring body, and a plug-in ring body; characterized in that: The central column is arranged on the carrier plate and has a matching central axis extending along a first direction; a first slot extending along the first direction and used for plugging with the first end of the spiral spring is arranged on the outer peripheral surface of the central column; The rotating ring body is arranged on the carrier plate and sleeved on the outside of the central column; a first accommodation space for accommodating the spiral spring is formed between the rotating ring body and the central column; a second slot extending along the first direction and used for plugging with the second end of the spiral spring is provided on the inner circumference of the rotating ring body; The rotating ring body has a first unidirectional rotation direction and a second unidirectional rotation direction rotating around the matching central axis; A one-way stop structure is provided between the rotating ring body and the carrier plate for limiting the rotating ring body from rotating in a first one-way rotation direction and allowing the rotating ring body to rotate in a second one-way rotation direction; Several of the plug-in ring bodies are internally and externally socketed with each other and assembled in the first accommodating space; two adjacent plug-in ring bodies and adjacent rotating ring bodies and plug-in ring bodies are plugged together along the first direction; a second accommodating space for accommodating a spiral spring is formed between the innermost plug-in ring body and the central column; a third slot for plugging with the second end of the spiral spring is provided on the inner circumferential surface of each of the plug-in ring bodies.

2. The scroll spring bearing assembly according to claim 1, characterized in that: The supporting plate has an annular inner circumference; the rotating ring body is arranged in the space formed by the annular inner circumference; the one-way stopping structure includes a ratchet groove, a pawl, and an elastic member; a plurality of the ratchet grooves are arranged at intervals on the annular inner circumference; the pawl is rotatably connected to the rotating ring body and has a stopping end that matches the ratchet groove; the elastic member is arranged between the rotating ring body and the pawl, and has an elastic force that drives the stopping member to move toward the inner circumference of the supporting plate.

3. The scroll spring bearing assembly according to claim 2, characterized in that: The elastic member is a spring sheet; the spring sheet is plug-fitted with the rotating ring body along a first direction; and the elastic end of the spring sheet is matched with the pawl.

4. The scroll spring bearing assembly according to claim 1, characterized in that: An inserting protrusion is provided on the outer peripheral surface of each inserting ring body; the inserting protrusion of the outermost inserting ring body is inserted and matched with the second slot along the first direction; and the inserting protrusion of the adjacent inserting ring body is inserted and matched with the third slot along the first direction.

5. The scroll spring bearing assembly according to claim 1, characterized in that: The bearing assembly includes a cover body; the cover body is threadedly connected to the bearing plate and has a covering state of covering the first accommodating space; in the covering state, the cover body cooperates with each plug-in ring body to limit the movement of the plug-in ring body along the first direction.

6. The scroll spring bearing assembly according to claim 5, characterized in that: An observation window is provided on the cover body corresponding to the first accommodating space.

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