CN211117041U

CN211117041U - Pre-assembled fastening assembly and compressor

Info

Publication number: CN211117041U
Application number: CN201921298295.XU
Authority: CN
Inventors: 杨磊; 康乐; 魏爱国; 赵润鹏; 黄娟; 李羲龙; 李文东
Original assignee: Qingdao Economic And Technology Development District Haier Water Heater Co ltd; Haier Smart Home Co Ltd; Qingdao Haier New Energy Electric Appliance Co Ltd
Current assignee: Qingdao Economic And Technology Development District Haier Water Heater Co ltd; Haier Smart Home Co Ltd; Qingdao Haier New Energy Electric Appliance Co Ltd
Priority date: 2019-08-12
Filing date: 2019-08-12
Publication date: 2020-07-28
Anticipated expiration: 2029-08-12

Abstract

The utility model discloses a pre-installation fastening components and compressor belongs to compressor assembly technical field. The utility model provides a pre-installation fastening components includes that first waiting fastener and fastener, fastener are including the second limit structure, connection structure and the first limit structure that connect gradually. The connecting structure of the fastener can be assembled in advance in a first connecting hole in a first to-be-fastened piece, the movement of the fastener in the axis direction can be limited by the matching of the first limiting structure and the second limiting structure, and the connecting structure is limited in the first connecting hole, so that the fastener is prevented from falling off from the first to-be-fastened piece. Compared with a first to-be-fastened part and a fastening part which are designed in a split mode in the prior art, the pre-assembled fastening assembly can reduce the storage cost, avoid the fastening part from being lost before assembly, improve the assembly efficiency of later-stage assembly and avoid the phenomenon that the fastening part accidentally drops in the later-stage assembly process.

Description

Pre-assembled fastening assembly and compressor

Technical Field

The utility model relates to a compressor assembly technical field especially relates to a pre-installation fastening components and compressor.

Background

The compressor is a driven fluid machine for lifting low-pressure gas into high-pressure gas, and is an important component of a refrigeration system. As shown in fig. 1, the conventional compressor includes a compressor housing 10 and a terminal box cover 20, a positioning bolt 40 is disposed on the compressor housing 10, and the terminal box cover 20 is mounted on the positioning bolt 40 by a fastening nut 30, so that the compressor housing 10 and the terminal box cover 20 are connected. As shown in fig. 2 to 5, the method for fastening the terminal cover 20 to the compressor housing 10 includes first placing the terminal cover 20 above the compressor housing 10 so that the connection holes of the terminal cover 20 are aligned with the positioning bolts 40; then, moving the junction box cover 20 downwards to enable the positioning bolt 40 to penetrate through the connecting hole in the junction box cover 20, and continuously moving downwards until the junction box cover 20 is abutted to the compressor shell 10; finally, the fastening nut 30 is screwed into the part of the positioning bolt 40 protruding out of the junction box cover 20, and the assembly of the junction box cover 20 and the compressor shell 10 is completed after the fastening nut 30 is fastened in place.

In the fastening method, the fastening nut 30 and the junction box cover 20 are designed in a split mode, and no assembly relation exists between the fastening nut 30 and the junction box cover, so that the fastening nut 30 and the junction box cover are required to be stored separately, the storage cost is increased, and the fastening nut 30 is easy to lose before assembly due to the small size of the fastening nut 30, so that the normal operation of assembly is influenced. In addition, the fastening nut 30 and the terminal box cover 20 of the split design need to be assembled one by one when being assembled with the compressor housing 10, so that the fastening nut 30 is easy to drop off during the assembly process, and the assembly efficiency is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pre-installation fastening components, this pre-installation fastening components can assemble in advance, and the storage cost is lower, is difficult for losing, and is difficult for dropping when later stage assembly, and assembly efficiency is higher.

Another object of the utility model is to provide a compressor, this compressor assembly efficiency is high, and the storage is with low costs.

To achieve the purpose, the utility model adopts the following technical proposal:

a preassembled fastening assembly comprising:

the first fastener to be fastened is provided with a first connecting hole;

the fastener comprises a first limiting structure, a connecting structure and a second limiting structure which are sequentially connected, the first limiting structure is configured to pass through the first connecting hole so that the connecting structure is located in the first connecting hole, and the second limiting structure and the first limiting structure are matched to limit the movement of the fastener in the axis direction of the fastener.

Preferably, the preassembled fastening assembly further comprises:

and the second fastener is provided with a second connecting hole along the axis direction of the fastener, and the second fastener penetrates through the second connecting hole.

Preferably, the second connecting hole is a threaded hole, the second fastener to be fastened is a stud, and the stud is in threaded connection with the threaded hole.

Preferably, the connecting structure is rotatably connected in the first connecting hole, so that the fastener is configured to be capable of moving relative to the second fastener when rotated alone.

Preferably, the first limiting structure is a stud, and the first connecting hole is a threaded hole.

Preferably, the first limiting structure is a spline column, and the first connecting hole is a spline hole.

Preferably, the second limiting structure is a limiting ring, and the size of the limiting ring is larger than that of the first connecting hole.

Preferably, the second limiting structure is a plurality of bumps arranged along the circumferential direction of the connecting structure.

Preferably, the fastener further comprises:

the grabbing structure is arranged on the second limiting structure and is positioned on two sides of the second limiting structure together with the connecting structure.

Preferably, the gripping structure, the second limiting structure, the connecting structure and the first limiting structure are integrally formed.

A compressor comprises the preassembled fastening assembly, and the first to-be-fastened piece is a junction box cover.

The utility model has the advantages that:

the utility model provides a pre-installation fastening components, this pre-installation fastening components include that first waiting fastener and fastener, fastener are including the second limit structure, connection structure and the first limit structure that connect gradually. The connecting structure of the fastener can be guided into the first connecting hole of the first fastener to be fastened through the first limiting structure, the fastener and the first fastener to be fastened are assembled in advance, the movement of the fastener in the axis direction can be limited by the aid of the first limiting structure and the second limiting structure, the connecting structure is limited in the first connecting hole, and therefore the fastener is prevented from falling off from the first fastener to be fastened. Compared with a first to-be-fastened part and a fastening part which are designed in a split mode in the prior art, the pre-assembled fastening assembly can reduce the storage cost, avoid the fastening part from being lost before assembly, improve the assembly efficiency of later-stage assembly and avoid the phenomenon that the fastening part accidentally drops in the later-stage assembly process.

Drawings

FIG. 1 is an assembly view of a compressor housing, a junction box cover, a fastening nut and a positioning bolt of a prior art compressor;

FIG. 2 is a first state diagram of a prior art compressor assembly process;

FIG. 3 is a second state diagram of a prior art compressor assembly process;

FIG. 4 is a third prior art state diagram during assembly of a compressor;

FIG. 5 is a fourth prior art state diagram during assembly of a compressor;

FIG. 6 is a schematic structural view of the fastener and the first fastener to be fastened provided by the present invention before assembly;

FIG. 7 is a sectional view taken in the direction B-B in FIG. 6;

FIG. 8 is a schematic structural view of a fastener provided by the present invention;

FIG. 9 is a cross-sectional view taken in the direction of C-C in FIG. 8;

fig. 10 is a schematic structural view of the fastener and the first fastener to be fastened as provided by the present invention;

FIG. 11 is a state view of the fastener and first fastener-requiring member of the present invention after assembly;

fig. 12 is a schematic structural diagram of a compressor provided by the present invention;

fig. 13 is a sectional view taken in the direction of a-a in fig. 12.

In the figure:

10. a compressor housing; 20. a junction box cover; 30. positioning the bolt; 40. fastening a nut;

1. a compressor housing; 2. a first member to be fastened; 201. a first connection hole;

3. a fastener; 301. a first limit structure; 302. a second limit structure; 303. a connecting structure; 304. a second connection hole; 305. a gripping structure;

4. and a second fastener to be fastened.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The embodiment provides a preassembled fastening assembly, as shown in fig. 6 and 7, the preassembled fastening assembly comprises a first fastener 2 and a fastener 3, the first fastener 2 and the fastener 3 can be assembled in advance, so that the warehousing cost is reduced, the loss of the fastener 3 with small volume is avoided, the later-stage assembling efficiency with other parts is improved, and the probability that the fastener 3 falls off in the later-stage assembling process is reduced. Specifically, as shown in fig. 7, the first member to be fastened 2 is provided with a first connection hole 201 for connection with the fastener 3. As shown in fig. 8 and 9, the fastener 3 includes a first stopper structure 301, a connecting structure 303, and a second stopper structure 302, which are connected in this order. The first limiting structure 301 has a first state of passing through the first connection hole 201 and a second state of limiting, and when the first limiting structure 301 is in the first state, the first limiting structure 301 is configured to pass through the first connection hole 201 to enable the connection structure 303 to enter the first connection hole 201, so as to achieve pre-installation of the first fastener 2 and the fastener 3. When the first limiting structure 301 is in the second state, the second limiting structure 302 and the first limiting structure 301 are matched to limit the movement of the fastening member 3 in the axial direction thereof, so that the connecting structure 303 is always located in the first connecting hole 201, and the fastening member 3 is prevented from falling off from the first fastening member 2 to be fastened.

When fastener 3 and first fastener 2 are assembled in advance, it is also possible to connect with second fastener 4, thereby fixing first fastener 2 to second fastener 4, and keeping the relative positions of first fastener 2 and second fastener 4 fixed. The second fastener 4 may be a separate structure or a partial structure on an external device. Specifically, as shown in fig. 9, the fastener 3 is provided with a second connecting hole 304 in the axial direction, and the second member to be fastened 4 can be disposed through the second connecting hole 304, thereby achieving the connection of the fastener 3 and the second member to be fastened 4. By utilizing the connection of the fastening piece 3 and the second fastener 4 to be fastened, the purpose of fixedly connecting the first fastener 2 to be fastened and the second fastener 4 to be fastened can be achieved, and the application range of the preassembled fastening assembly is widened.

Optionally, in this embodiment, as shown in fig. 9, the second connecting hole 304 is a threaded hole, the second to-be-fastened piece 4 is a stud, and by adopting the matching of the stud and the threaded hole, the connecting strength between the fastening piece 3 and the second to-be-fastened piece 4 can be improved, and the phenomenon of slipping is prevented. Of course, in other embodiments, the second connecting hole 304 may also be set as an unthreaded hole, the second fastener 4 to be fastened is set as a spring structure, the spring structure is compressed and disposed in the unthreaded hole, and the fastening member 3 and the second fastener 4 to be fastened are connected by using stress generated by elastic deformation of the spring structure.

Further, the size of the connecting structure 303 on the fastening member 3 is set to be smaller than that of the first connecting hole 201, so that the fastening member 3 can rotate in the first connecting hole 201, and when the fastening member 3 and the second to-be-fastened member 4 are assembled in the later period, the fastening member 3 can be moved along the axis direction of the second to-be-fastened member 4 by rotating the fastening member 3 alone, and the increase of the assembling difficulty caused by the need of rotating the fastening member 3 and the first to-be-fastened member 2 at the same time is avoided. Optionally, the depth of the first connection hole 201 is smaller than the length of the connection structure 303 in the axial direction.

Alternatively, as shown in fig. 10 and 11, the first connecting hole 201 is a threaded hole, and the first limiting structure 301 is a stud protruding from the bottom of the connecting structure 303. By adopting the matching of the stud and the threaded hole, the pre-assembly of the fastener 3 and the first fastener 2 to be fastened can be quickly and accurately realized. In addition, the effect of anticreep can be played through the cooperation that adopts double-screw bolt and screw hole to can avoid in transportation, storage process fastener 3 and the first fastener 2 of treating break away from, and can avoid waiting at later stage fastener 3 and second when fastener 4 threaded connection, fastener 3 slips in following first connecting hole 201.

The concrete reason that the anti-falling function can be achieved by adopting the matching of the stud and the threaded hole is as follows: after the first limit structure 301 of the fastener 3 passes through the first connection hole 201, if the fastener 3 continues to rotate along the original rotation direction, the fastener 3 cannot be unscrewed from the first connection hole 201 due to the existence of the second limit structure 302 and the fixed rotation direction of the screw thread on the stud and the threaded hole; when the fastening member 3 rotates reversely, because the connecting structure 303 of the fastening member 3 is rotatably connected in the first connecting hole 201, and the depth of the first connecting hole 201 is smaller than the length of the connecting structure 303 along the axial direction, because of gravity, the upper surface of the first fastening member 2 contacts with the second limiting structure 302 of the fastening member 3, and a certain distance is formed between the lower surface of the first fastening member 2 and the first limiting structure 301, at this time, if the fastening member 3 is only rotated reversely in the horizontal plane, the fastening member 3 cannot be unscrewed from the first connecting hole 201, an acting force must be applied to the fastening member 3, and the first limiting structure 301 is again abutted against the first fastening member 2 to be unscrewed. Preferably, the rotation direction of the fastening member 3 when being screwed with the first member to be fastened 2 is the same as the rotation direction of the fastening member 3 when being screwed with the second member to be fastened 4, so that the anti-drop effect is further improved.

Of course, in other embodiments, the first limiting structure 301 may also be configured as a spline cylinder, the first connection hole 201 is a spline hole, and the spline cylinder can rotate to a first position passing through the spline hole and a second position unable to pass through the spline hole. Specifically, as the plurality of key grooves are formed in the spline column along the circumferential direction, and the plurality of key grooves are also formed in the spline hole along the circumferential direction, when the key grooves of the spline hole and the key grooves of the spline column are arranged in a staggered mode, the first position is set, and the spline column can smoothly pass through the spline hole; and be above-mentioned second position when the keyway of splined hole and the keyway of spline post set up relatively, the spline post can't pass through the splined hole to have limiting displacement.

In the present embodiment, as shown in fig. 6 and 11, the second position-limiting structure 302 is a position-limiting ring, the cross-sectional shape of the position-limiting ring is circular, and the outer diameter of the position-limiting ring is larger than the diameter of the first connecting hole 201, so that the movement of the fastening member 3 in the axial direction can be limited. Of course, the cross-sectional shape of the stop collar may be other than circular, for example, it may be regular, such as square, oval, or triangular, or irregular, such as flower-shaped. In other embodiments, instead of using a stop collar, a plurality of projections may be used as the second stop structure 302, and the plurality of projections are arranged along the circumference of the connecting structure 303 to reduce the weight and material consumption of the fastening member 3. The number of the projections is not limited, and preferably not less than two, and is uniformly distributed along the circumferential direction of the connection structure 303.

In this embodiment, the first limiting structure 301 passes through the first connection hole 201 from top to bottom, so that the first limiting structure 301 is located at the lower side of the first connection hole 201, and the second limiting structure 302 is located at the upper side of the first connection hole 201, but in other embodiments, the first limiting structure 301 may also pass through the first connection hole 201 from bottom to top, so that the first limiting structure 301 is located at the upper side of the first connection hole 201, and the second limiting structure 302 is located at the lower side of the first connection hole 201.

Further, in order to facilitate the operator to screw the fastener 3, as shown in fig. 8 and 9, the fastener 3 further includes a gripping structure 305, and the gripping structure 305 is disposed on the second limit structure 302 and located at both sides of the second limit structure 302 together with the connecting structure 303. Optionally, the cross-sectional shape of the gripping structure 305 is polygonal to facilitate gripping by an operator's hand or gripping device to screw the fastener 3. Further optionally, the gripping structure 305, the second retention structure 302, the connecting structure 303 and the first retention structure 301 are integrally formed to improve the structural strength of the fastener 3. Of course, in other embodiments, the gripping structure 305, the second stop structure 302, the connecting structure 303, and the first stop structure 301 may be manufactured separately and then welded.

The present embodiment further provides a compressor including the preassembled fastening assembly, as shown in fig. 12 and 13, the compressor further includes a compressor housing 1 and a terminal box cover, wherein the terminal box cover is the first fastener 2, and the positioning bolt protruding from the compressor housing 1 is the second fastener 4. Through adopting above-mentioned pre-installation fastening components, the terminal box lid of this compressor can with fastener 3 after assembling in advance, on the positioning bolt of reassembling on compressor housing 1 to not only can reduce the storage cost that terminal box lid and fastener 3 separately stored, avoid the less fastener 3 of volume to lose and the accident drops, can also improve the assembly efficiency of whole compressor.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A preassembled fastener assembly comprising:

the first fastener (2) to be fastened is provided with a first connecting hole (201);

the fastener (3), the fastener (3) includes first limit structure (301), connection structure (303) and second limit structure (302) that connect gradually, first limit structure (301) is configured to be able to pass through first connecting hole (201), so that connection structure (303) is located in first connecting hole (201), second limit structure (302) and first limit structure (301) cooperate and are used for restricting the removal of fastener (3) in its axial direction.

2. The preassembled fastener assembly of claim 1 further comprising:

and the fastener (3) is provided with a second connecting hole (304) along the axis direction of the fastener (4), and the second fastener (4) is arranged through the second connecting hole (304).

3. The preassembled fastening assembly of claim 2,

the second connecting hole (304) is a threaded hole, the second fastener (4) is a stud, and the stud is in threaded connection with the threaded hole.

4. The preassembled fastening assembly of claim 3,

the connecting structure (303) is rotatably connected in the first connecting hole (201) so that the fastener (3) can move relative to the second fastener (4) when being configured to rotate independently.

5. The preassembled fastening assembly of claim 1,

the first limiting structure (301) is a stud, and the first connecting hole (201) is a threaded hole.

6. The preassembled fastening assembly of claim 1,

first limit structure (301) are the spline post, first connecting hole (201) are the splined hole.

7. The preassembled fastening assembly of claim 1,

the second limiting structure (302) is a limiting ring, and the size of the limiting ring is larger than that of the first connecting hole (201).

8. The preassembled fastening assembly of claim 1 wherein the fastener (3) further comprises:

a gripping structure (305), wherein the gripping structure (305) is arranged on the second limiting structure (302) and is positioned at two sides of the second limiting structure (302) together with the connecting structure (303).

9. The preassembled fastening assembly of claim 8,

the gripping structure (305), the second limiting structure (302), the connecting structure (303) and the first limiting structure (301) are integrally formed.

10. A compressor, comprising a pre-assembled fastening assembly according to any of claims 1-9, the first component (2) to be fastened being a terminal box cover.