阅读说明：本技术 偏心调节结构及具有其的压缩机 (Eccentric adjusting structure and compressor with same ) 是由 魏会军 李雪峰 康小丽 单彩侠 刘韵 陈肖汕 陈江嘉 于 2019-09-20 设计创作，主要内容包括：本发明提供了一种偏心调节结构及具有其的压缩机,偏心调节结构,包括：驱动轴；偏心衬套,驱动轴穿设在偏心衬套上；限位件,限位件的一端与驱动轴连接,限位件的另一端与偏心衬套连接,限位件设置在驱动轴和偏心衬套之间,以通过限位件限制驱动轴与偏心衬套的相对转动范围。通过本发明提供的技术方案,能够解决现有技术中的压缩机的可靠性较低的技术问题。(The invention provides an eccentric adjusting structure and a compressor with the same, wherein the eccentric adjusting structure comprises: a drive shaft; the driving shaft penetrates through the eccentric bushing; the locating part, the one end and the drive shaft of locating part are connected, and the other end and the eccentric bush of locating part are connected, and the locating part sets up between drive shaft and eccentric bush to through the relative rotation range of locating part restriction drive shaft and eccentric bush. Through the technical scheme provided by the invention, the technical problem of low reliability of the compressor in the prior art can be solved.)

1. An eccentric adjustment structure, comprising:

a drive shaft (80);

an eccentric bushing (130), the drive shaft (80) being threaded on the eccentric bushing (130);

one end of the limiting piece (180) is connected with the driving shaft (80), the other end of the limiting piece (180) is connected with the eccentric bushing (130), and the limiting piece (180) is arranged between the driving shaft (80) and the eccentric bushing (130) so as to limit the relative rotation range of the driving shaft (80) and the eccentric bushing (130) through the limiting piece (180).

2. The eccentric adjustment structure according to claim 1, characterized in that the limiting member (180) is a strip structure, the limiting member (180) is made of a flexible material, one end of the strip structure is connected with the driving shaft (80), and the other end of the strip structure is connected with the eccentric bushing (130) to limit the relative position between the driving shaft (80) and the eccentric bushing (130) through the strip structure.

3. The eccentric adjustment structure according to claim 2, characterized in that the eccentric adjustment structure further comprises:

and the fastening assembly is used for fixing the limiting piece (180), so that one end of the limiting piece (180) is fixed on the driving shaft (80) through the fastening assembly, and the other end of the limiting piece (180) is fixed on the eccentric bushing (130).

4. The eccentric adjustment structure according to claim 3, wherein the driving shaft (80) is provided with a first mounting hole, the eccentric bushing (130) is provided with a second mounting hole, the first mounting hole is disposed opposite to the second mounting hole, one end of the bar-shaped structure is disposed in the first mounting hole, the other end of the bar-shaped structure is disposed in the second mounting hole, and the fastening assembly comprises:

and two fasteners (190), wherein one fastener (190) is inserted into the first mounting hole to fix one end of the strip-shaped structure, and the other fastener (190) is inserted into the second mounting hole to fix the other end of the strip-shaped structure.

5. The eccentric adjustment structure according to claim 1, characterized in that the stopper (180) is a nylon rope, one end of which is provided on the driving shaft (80) and the other end of which is provided on the eccentric bushing (130).

6. The eccentric adjustment structure according to claim 1, wherein a first mounting groove (200) is provided on the driving shaft (80), a notch of the first mounting groove (200) is provided toward the eccentric bushing (130), and one end of the stopper (180) is provided at a groove bottom of the first mounting groove (200).

7. The eccentric adjustment structure according to claim 1, wherein the limiting member (180) is made of an elastic material, one end of the limiting member (180) is inserted into the driving shaft (80), and the other end of the limiting member (180) is inserted into the eccentric bushing (130), so as to limit the relative rotation range of the driving shaft (80) and the eccentric bushing (130) under the elastic action of the limiting member (180).

8. The eccentric adjustment structure according to claim 7, wherein the limiting member (180) is a torsion spring, one end of the torsion spring is inserted on the driving shaft (80), and the other end of the torsion spring is inserted on the eccentric bushing (130), so as to limit the relative rotation range of the driving shaft (80) and the eccentric bushing (130) under the action of the torsion spring.

9. The eccentric adjusting structure of claim 8, further comprising a limiting structure (210), wherein the limiting structure (210) penetrates through the torsion spring and is inserted on the driving shaft (80) so as to limit the torsion spring through the limiting structure (210).

10. The eccentric adjustment structure according to claim 8, wherein a second mounting groove (220) is provided on the driving shaft (80), a notch of the second mounting groove (220) is provided toward the eccentric bushing (130), at least a portion of the torsion spring is disposed in the second mounting groove (220), and one end of the torsion spring is inserted on a sidewall of the second mounting groove (220).

11. A compressor, characterized in that it comprises an eccentric adjustment structure, which is as claimed in any one of claims 1 to 10.

Technical Field

The invention relates to the technical field of compressors, in particular to an eccentric adjusting structure and a compressor with the same.

Background

At present, the air conditioning system for the vehicle can change along with road conditions to a certain extent, so that the requirement on the running reliability of a compressor is high. When the compressor operates in a low-temperature environment, the refrigerant in the compressor is easy to change into a liquid state, and the phenomenon of liquid impact caused by starting air suction and liquid entrainment is avoided. In addition, due to the limitation of the existing machining process, the wall thickness of the vortex body fluctuates in a small range, so that the meshing precision of the side wall surface of the wrap tooth is influenced, and further the radial sealing performance of the compressor is poor.

In the prior art, a structure capable of changing the revolving radius of the movable scroll is generally adopted, and the actual eccentricity of a main shaft of a driving shaft is adjusted in time, so that the side wall surfaces of two scroll wrap teeth keep reasonable contact stress. When the suction gas takes liquid, the radial clearance of the compression cavity can be instantly enlarged, the action of abnormal load is relieved, the fragmentation caused by overlarge stress of the wrap teeth of the vortex body is avoided, the eccentric amount can quickly return to the normal value after the abnormal load is eliminated, and the reliable and stable operation of the compressor is ensured.

An eccentric bush is generally provided as an intermediate member between the eccentric shaft of the drive shaft and the bearing of the hub of the orbiting scroll, and is used to change the running radius of the orbiting scroll at a proper timing. The rotating angle range of the eccentric pin sleeve is limited, so that the abnormity caused by excessive change of the eccentric amount is avoided, the center of the movable disc is self-adaptively close to or far away from the center of the fixed disc in a reasonable range according to the actual condition, and the flexible adjustment of the radial clearance of the wrap of the vortex body is realized.

However, with the existing eccentric adjustment structure, when the scroll compressor is started and the main shaft of the drive shaft rotates, the main shaft of the drive shaft and the bush weight block collide and define the eccentric bush rotation range in a line contact manner. The contact area of the main shaft and the bush of the driving shaft is small, the linear contact areas are mutually extruded when the driving shaft rotates at a high speed, the material deformation is easily generated, the clamping is caused, the timely adjustment function of the eccentric amount of the main shaft of the driving shaft is failed, and the running reliability of the compressor is reduced.

Disclosure of Invention

The invention mainly aims to provide an eccentric adjusting structure and a compressor with the same, so as to solve the technical problem that the compressor in the prior art is low in reliability.

In order to achieve the above object, according to one aspect of the present invention, there is provided an eccentric adjustment structure including: a drive shaft; the driving shaft penetrates through the eccentric bushing; the locating part, the one end and the drive shaft of locating part are connected, and the other end and the eccentric bush of locating part are connected, and the locating part sets up between drive shaft and eccentric bush to through the relative rotation range of locating part restriction drive shaft and eccentric bush.

Furthermore, the limiting part is of a strip-shaped structure, the limiting part is made of a flexible material, one end of the strip-shaped structure is connected with the driving shaft, and the other end of the strip-shaped structure is connected with the eccentric bushing so as to limit the relative position between the driving shaft and the eccentric bushing through the strip-shaped structure.

Further, the eccentric adjustment structure further includes: and the fastening assembly is used for fixing the limiting part so as to fix one end of the limiting part on the driving shaft and fix the other end of the limiting part on the eccentric bushing.

Further, be provided with first mounting hole in the drive shaft, be provided with the second mounting hole on the eccentric bush, first mounting hole sets up with the second mounting hole relatively, and the one end setting of strip structure is in first mounting hole, and the other end setting of strip structure is in the second mounting hole, and fastening components includes: and one fastener is inserted in the first mounting hole to fix one end of the strip-shaped structure, and the other fastener is inserted in the second mounting hole to fix the other end of the strip-shaped structure.

Furthermore, the locating part is nylon rope, and the one end setting of nylon rope is on the drive shaft, and the other end of nylon rope sets up on the eccentric bush.

Further, be provided with first mounting groove on the drive shaft, the notch of first mounting groove sets up towards eccentric bush, and the one end setting of locating part is at the tank bottom of first mounting groove.

Furthermore, the limiting piece is made of elastic materials, one end of the limiting piece is inserted on the driving shaft, and the other end of the limiting piece is inserted on the eccentric bushing, so that the relative rotation range of the driving shaft and the eccentric bushing is limited under the elastic action of the limiting piece.

Furthermore, the limiting part is a torsion spring, one end of the torsion spring is inserted into the driving shaft, and the other end of the torsion spring is inserted into the eccentric bushing, so that the relative rotation range of the driving shaft and the eccentric bushing is limited under the action of the torsion spring.

Further, eccentric adjustment structure still includes limit structure, and limit structure passes and inserts after the torsional spring and establish on the drive shaft to carry out spacingly through limit structure to the torsional spring.

Further, be provided with the second mounting groove on the drive shaft, the notch of second mounting groove sets up towards eccentric bush, and at least part setting of torsional spring is in the second mounting groove, and the one end of torsional spring is inserted and is established on the lateral wall of second mounting groove.

According to another aspect of the present invention, there is provided a compressor including an eccentric adjustment structure, the eccentric adjustment structure being the eccentric adjustment structure provided above.

By applying the technical scheme of the invention, the limiting piece is arranged between the driving shaft and the eccentric bushing, and one end of the limiting piece is connected with the driving shaft, and the other end of the limiting piece is connected with the eccentric bushing. Like this, when the relative rotation takes place for the eccentric bush at the drive shaft, the locating part will restrict the relative rotation scope of drive shaft, avoid the relative eccentric bush of drive shaft to take place rotation on a large scale, and then reduced the possibility of bumping between drive shaft and the eccentric bush, perhaps reduced the impact when bumping between the two, thereby avoided producing the dead circumstances of card that leads to because of the collision, make the main shaft of drive shaft can adjust the eccentric volume in good time, thereby improved the operational reliability of compressor. Therefore, the technical problem of low reliability of the compressor in the prior art can be solved through the technical scheme provided by the invention.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic diagram illustrating an eccentric adjustment structure provided in accordance with an embodiment of the present invention;

FIG. 2 is a schematic structural diagram illustrating an eccentric adjustment structure provided according to a second embodiment of the present invention;

fig. 3 shows a structural schematic of a compressor provided according to a third embodiment of the present invention.

Wherein the figures include the following reference numerals:

10. a nose cover; 20. a fixed scroll; 30. a movable scroll; 40. a support; 50. a main bearing; 60. shaft sealing; 70. a housing; 80. a drive shaft; 90. a motor rotor; 100. a motor stator; 110. an air suction port; 120. a secondary bearing; 130. an eccentric bushing; 140. a radial bearing; 150. an anti-rotation mechanism; 160. a vent valve assembly; 170. exhaust gas oil content; 180. a limiting member; 190. a fastener; 200. a first mounting groove; 210. a limiting structure; 220. and a second mounting groove.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1, a first embodiment of the present invention provides an eccentric adjustment structure, which includes: a drive shaft 80, an eccentric bushing 130, and a limit stop 180. The driving shaft 80 is inserted into the eccentric bushing 130, one end of the limiting member 180 is connected to the driving shaft 80, the other end of the limiting member 180 is connected to the eccentric bushing 130, and the limiting member 180 is disposed between the driving shaft 80 and the eccentric bushing 130 to limit the relative rotation range between the driving shaft 80 and the eccentric bushing 130 through the limiting member 180.

With the eccentric adjustment structure provided in this embodiment, during the relative rotation of the driving shaft 80 with respect to the eccentric bushing 130, the limiting member 180 will limit the relative rotation range of the driving shaft 80. Thus, the driving shaft 80 can be prevented from rotating in a relatively large range, the possibility of collision between the driving shaft 80 and the eccentric bushing 130 can be reduced, or the collision force between the driving shaft 80 and the eccentric bushing can be reduced, so that the locking condition caused by deformation due to collision is avoided, the eccentric amount of the main shaft of the driving shaft 80 can be timely adjusted, and the operation reliability of the compressor can be improved.

Specifically, the limiting member 180 in this embodiment may be a strip structure, and the limiting member 180 is made of a flexible material, one end of the strip structure is connected to the driving shaft 80, and the other end of the strip structure is connected to the eccentric bushing 130, so as to limit the relative position between the driving shaft 80 and the eccentric bushing 130 through the strip structure. By adopting the flexible strip-shaped structure, the eccentricity of the main shaft of the driving shaft 80 can be adjusted in time, the phenomenon that the driving shaft 80 collides with the eccentric bushing 130 and is blocked due to the overlarge rotating range is avoided, the relative rotating range of the main shaft of the driving shaft 80 is convenient to limit, and the reliability of the compressor is improved better.

In this embodiment, the eccentric adjustment structure further includes a fastening assembly for fixing the limiting member 180, so that one end of the limiting member 180 is fixed on the driving shaft 80 and the other end of the limiting member 180 is fixed on the eccentric bushing 130 by the fastening assembly. With this arrangement, one end of the limiting member 180 can be stably connected to the driving shaft 80 and the other end of the limiting member 180 can be stably connected to the eccentric bushing 130 by the fastening action of the fastening member. In the rotation process of the driving shaft 80 relative to the eccentric bushing 130, the phenomenon that the limiting part 180 is separated from at least one of the driving shaft 80 and the eccentric bushing 130 is avoided, so that the limiting part 180 can play a stable limiting role, the eccentric amount of the main shaft of the driving shaft 80 can be adjusted timely, and the blocking condition caused by deformation due to collision is avoided.

In order to fix the limiting member 180 better, the driving shaft 80 in this embodiment is provided with a first mounting hole, the eccentric bushing 130 is provided with a second mounting hole, the first mounting hole is disposed opposite to the second mounting hole, one end of the strip-shaped structure is disposed in the first mounting hole, and the other end of the strip-shaped structure is disposed in the second mounting hole. The fastening assembly includes two fasteners 190, one fastener 190 being inserted into the first mounting hole to secure one end of the strip structure, and the other fastener 190 being inserted into the second mounting hole to secure the other end of the strip structure. By adopting the arrangement, the stability of the whole structure can be improved, so that one end of the strip-shaped structure is stably connected with the driving shaft 80, the other end of the strip-shaped structure is stably connected with the eccentric bushing 130, the phenomenon that the limiting part 180 is separated due to relative rotation between the driving shaft 80 and the eccentric bushing 130 is avoided, and the limiting part 180 can play a role in stable limiting.

Specifically, the limiting member 180 in this embodiment is a nylon rope, one end of the nylon rope is disposed on the driving shaft 80, and the other end of the nylon rope is disposed on the eccentric bushing 130. By adopting the arrangement, the nylon rope can limit the relative rotation range of the driving shaft 80 relative to the eccentric bushing 130, so that a better limiting effect is achieved, the eccentric amount of the main shaft of the driving shaft 80 can be adjusted in time, and the running reliability of the compressor is improved. Simultaneously, the nylon rope's intensity is high, can not appear easily by the condition of breaking, therefore can play stable limiting displacement.

In the present embodiment, the driving shaft 80 is provided with a first mounting groove 200, a notch of the first mounting groove 200 is disposed toward the eccentric bushing 130, and one end of the limiting member 180 is disposed at a bottom of the first mounting groove 200. With such an arrangement, the first mounting groove 200 can facilitate mounting of the limiting member 180. Specifically, first mounting groove 200 includes sectorial portion and arc groove limit, and the arc groove limit is located the periphery of sectorial portion to pass through the arc groove limit, the sectorial portion specifically is the sector groove structure.

With the structure of the eccentric bushing 130 according to the present embodiment, when the driving shaft 80 stops as the scroll compressor stops, the eccentric bushing 130 continues to rotate in the rotational direction due to the inertial force, and the nylon cord can limit the rotation of the eccentric bushing 130 within the design range due to the inertial force, and prevent the eccentric bushing 130 from being in metal collision contact with the driving shaft 80, thereby reducing abnormal noise.

As shown in fig. 2, an eccentric adjustment structure is provided in the second embodiment of the present invention, and the difference between the eccentric adjustment structure in the second embodiment and the eccentric adjustment structure in the first embodiment is that the structure of the limiting member 180 is different. In the embodiment, the limiting member 180 is made of an elastic material, one end of the limiting member 180 is inserted into the driving shaft 80, and the other end of the limiting member 180 is inserted into the eccentric bushing 130, so as to limit the relative rotation range of the driving shaft 80 and the eccentric bushing 130 under the elastic action of the limiting member 180. With the arrangement, the elastic limiting part 180 can limit the relative rotation range of the driving shaft 80 and the eccentric bushing 130, so that the phenomenon of collision caused by overlarge rotation of the driving shaft 80 relative to the eccentric bushing 130 or the phenomenon of deformation and clamping caused by overlarge collision force is avoided, and the eccentric amount of the main shaft of the driving shaft 80 can be conveniently adjusted in time.

Specifically, the limiting member 180 in this embodiment is a torsion spring, one end of which is inserted into the driving shaft 80, and the other end of which is inserted into the eccentric bushing 130, so as to limit the relative rotation range between the driving shaft 80 and the eccentric bushing 130 under the action of the torsion spring. By adopting the arrangement, the rotation range of the driving shaft 80 can be better limited under the action of the torsion spring, so that the phenomenon of collision between the driving shaft 80 and the eccentric bushing 130 or jamming caused by collision is avoided, the eccentric amount of the main shaft of the driving shaft 80 can be better adjusted in time, and the working reliability of the compressor is better improved.

In order to improve the limiting stability of the torsion spring, the eccentric adjusting structure in this embodiment further includes a limiting structure 210, and the limiting structure 210 is inserted into the driving shaft 80 after passing through the torsion spring, so as to limit the torsion spring through the limiting structure 210. Specifically, limit structure 210 is the spacing pin, and the spacing pin passes and inserts behind the centre bore of torsional spring and establish on drive shaft 80 to the motion of torsional spring has been restricted through the spacing pin, thereby can carry out stable injecing through the torsional spring to the relative rotation between drive shaft 80 and the eccentric bush 130 better, has improved the holistic stability of device.

In the present embodiment, a second mounting groove 220 is provided on the driving shaft 80, a notch of the second mounting groove 220 is provided toward the eccentric bush 130, at least a portion of a torsion spring is disposed in the second mounting groove 220, and one end of the torsion spring is inserted on a sidewall of the second mounting groove 220. With such an arrangement, the torsion spring can be mounted better. The second mounting groove 220 is a sector groove, and a small section of arc-shaped groove is formed along the circumferential direction of the sector groove. A rectangular groove may be formed in the eccentric bushing 130, and the other end of the spring is inserted into the rectangular groove.

By adopting the eccentric adjusting structure provided by the embodiment, when the driving shaft 80 stops along with the stop of the scroll compressor, the eccentric bushing 130 continues to rotate in the rotating direction due to the inertia force, and the two extending sections of the spring can play a role of buffering and braking on the eccentric bushing 130 due to the rotation of the inertia force so as to avoid the collision contact between the eccentric bushing 130 and the driving shaft 80 when the eccentric amount adjusting angle is limited, thereby achieving the purpose of reducing abnormal noise.

In both the first and second embodiments, the drive shaft 80 includes a main shaft segment and an eccentric shaft segment. The main shaft section is connected with the eccentric shaft section, and the first limiting structure is arranged on the main shaft section. The eccentric bushing 130 includes a main body portion and a counterweight portion, the counterweight portion is disposed on the main body portion, the counterweight portion is provided with a second limiting structure, and the eccentric shaft section is disposed on the main body portion in a penetrating manner. Specifically, the eccentric bushing 130 is provided with an inner hole in clearance fit with the eccentric shaft of the driving shaft 80, and the center of the inner hole deviates from the center of the outer circular surface of the eccentric bushing 130.

As shown in fig. 3, according to a third embodiment of the present invention, there is provided a compressor including an eccentric adjustment structure, which is the eccentric adjustment structure provided in the first or second embodiment.

The compressor in the present embodiment is a scroll refrigeration compressor, and includes a head cover 10, a fixed scroll 20, an orbiting scroll 30, a bracket 40, a main bearing 50, a shaft seal 60, a casing 70, a drive shaft 80, a motor rotor 90, a motor stator 100, an intake port 110, a sub-bearing 120, an eccentric bush 130, a radial bearing 140, a rotation prevention mechanism 150, an exhaust valve assembly 160, exhaust oil 170, and the like.

Specifically, the main shaft portion of the drive shaft 80 in this embodiment is supported by the main bearing 50 and the sub bearing 120, and is rotated by the motor rotor 90. The eccentric bushing 130 is sleeved on the driving shaft 80 of the driving shaft 80, and the outer circle shaft section of the eccentric bushing 130 is inserted into the bearing seat of the hub at the back of the movable scroll 30. During the operation of the driving shaft 80, the orbiting scroll 30 is driven by the eccentric shaft of the driving shaft 80 to perform a non-self-rotation orbiting translation within the limit of the self-rotation preventing mechanism 150. The wraps of the fixed scroll 20 and the movable scroll 30 are engaged with each other to form crescent closed volume chambers with increasing pressure from outside to inside, and the closed volume chambers are correspondingly expanded or reduced under the continuous driving of the motor rotor 90, so that the purposes of suction, compression and exhaust of gaseous refrigerants are realized, and the refrigeration cycle is completed.

The eccentric bush 130 rotates within a small range about the main shaft eccentric shaft while rotating with the driving shaft 80 to adjust the eccentricity amount. When the rotation of the driving shaft 80 is started or the rotation of the driving shaft 80 is finished, the eccentric bushing 130 and the driving shaft 80 are in contact at the extreme angle position of the eccentricity adjustment due to the inertia, and the two parts are pressed against each other due to the force when the two parts are in contact. The eccentric bushing 130 with the balance block before the use of the present patent is in line contact with the driving shaft 80 at the rotation angle limit position, the contact area is small, the contact stress is large, the contact positions of the two parts are easy to deform, the phenomenon of blocking easily occurs due to mutual occlusion, and the eccentric amount of the eccentric bushing 130 is a fixed value under the condition of subsequent other working conditions or abnormal loads, so that the eccentric amount adjusting function fails.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects: the phenomenon that the eccentric bushing is blocked due to serious deformation of the contact surface can be avoided through the limiting action of the limiting piece; the problem of abnormal noise generated by the inertia effect of the eccentric bushing when the scroll compressor is started or stopped is solved; the eccentric amount can be automatically adjusted conveniently, the requirements on processing and assembly are reduced, and the interchangeability of parts is good.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.