CN210769727U

CN210769727U - Novel special expansion screw of air conditioner

Info

Publication number: CN210769727U
Application number: CN201921721509.XU
Authority: CN
Inventors: 张宝龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-15
Filing date: 2019-10-15
Publication date: 2020-06-16
Anticipated expiration: 2029-10-15

Abstract

The utility model discloses a novel special inflation screw of air conditioner relates to a fastener. The utility model comprises an expansion head, an expansion pipe, a screw rod and a nut, wherein the expansion pipe is sleeved outside the screw rod, the front end of the screw rod is connected with the expansion head, and the rear part of the screw rod is connected with the nut through threads; the expansion bolt is characterized in that an expansion part of the expansion pipe is arranged at the middle front part of the expansion pipe, a plurality of open grooves which are arranged along the axial direction are arranged on the expansion part, and the length of each open groove is 20-50% of the total length of the expansion bolt. Because the expansion head of the utility model is wedge-shaped, the diameter of the outer end is smaller than that of the inner end, the utility model is more convenient to be inserted into the hole of the wall body; because the utility model discloses an expansion pipe's expansion portion sets up at the well front portion of expansion pipe, is provided with the open slot that a plurality of arranged along the axial in the expansion portion, and the length of open slot is 20% ~ 50% of expansion bolts total length.

Description

Novel special expansion screw of air conditioner

Technical Field

The utility model relates to a fastener especially relates to a novel special inflation screw of air conditioner.

Background

The expansion bolts are widely used for fastening walls, guard rails, awnings, air conditioners, signboards and the like with materials such as cement, bricks and the like, the market demand is huge, and the number of the expansion bolts is more than 1000 thousands in domestic years at present.

The existing expansion bolt comprises an expansion head, an expansion pipe, a screw and a nut, wherein the expansion pipe is sleeved outside the screw, the front end of the screw is connected with the expansion head, and the rear part of the screw is connected with the nut through threads; a plurality of open grooves extending along the axial direction of the expansion pipe are uniformly distributed at the front end of the expansion pipe, the rear end of the screw rod and the expansion head respectively extend out of the two ends of the expansion pipe, and the expansion head and the open grooves are positioned on the same side; the expansion head is wedge-shaped, and the diameter of the outer end of the expansion head is larger than that of the inner end of the expansion head. When in use, the nut end of the expansion bolt is outwards integrally plugged into a hole drilled on a wall; and then the nut is locked to expand the expansion part of the expansion pipe so as to be fixed in the wall. Although it can utilize the wedge inclination to make the inflation produce the friction bond stress, reaches fixed effect, when its is applied to the fixed of outer machine of air conditioner, at first, its length is not enough, in addition, because its inflation portion sets up the front end at the expansion pipe, the inflation degree after the inflation is opened is not enough for fixed firmness is not enough, and when external load was great, expansion bolt was easily not hard up, had serious potential safety hazard.

SUMMERY OF THE UTILITY MODEL

Problem to prior art existence, the utility model provides a simple structure, the expansion degree is high, the fixed firmness is strong novel special inflation screw of air conditioner.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a novel expansion screw special for an air conditioner comprises an expansion head, an expansion pipe, a screw rod and a nut, wherein the expansion pipe is sleeved outside the screw rod, the front end of the screw rod is connected with the expansion head, and the rear end of the screw rod is connected with the nut through threads; the expansion bolt is characterized in that an expansion part of the expansion pipe is arranged at the middle front part of the expansion pipe, a plurality of open grooves which are arranged along the axial direction are arranged on the expansion part, and the length of each open groove is 20% -50% of the total length of the expansion bolt.

Further, the length of the open groove is 30% of the total length of the expansion bolt.

Further, the open slots are evenly distributed along the circumference.

Further, the expansion head is wedge-shaped, and the diameter of the outer end of the expansion head is smaller than that of the inner end of the expansion head.

Further, a crease is arranged on the expansion pipe in the middle of the expansion part and perpendicular to the axial direction.

The utility model has the advantages that:

1. because the expansion head of the utility model is wedge-shaped, the diameter of the outer end is smaller than that of the inner end, the novel special expansion screw for the air conditioner is more convenient to be inserted into the hole of the wall body;

2. because the utility model discloses an expansion portion setting of expansion pipe is anterior in the expansion pipe expansion portion is provided with the open slot that a plurality of arranged along the axial, the length of open slot is 20% ~ 50% of expansion bolts total length, just makes the expansion degree after the expansion portion expands and can reach 1000%, and fixed firmness is strong, has avoided current expansion bolts when external load is great, and expansion bolts easily becomes flexible, has the problem of serious potential safety hazard.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the novel special expansion screw for air conditioners before use;

FIG. 2 is a schematic view of the construction of the expansion bolt of FIG. 1 after use;

in the figure: 1-screw rod, 2-nut, 3-expansion pipe, 4-expansion part, 5-expansion head, 6-open slot and 7-crease.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 and 2, the novel expansion screw special for the air conditioner comprises an expansion head 5, an expansion pipe 3, a screw rod 1 and a nut 2, wherein the expansion pipe 3 is sleeved outside the screw rod 1, the front end of the screw rod 1 is connected with the expansion head 5, and the rear part of the screw rod 1 is connected with the nut 2 through threads; the expansion part 4 of the expansion pipe 3 is arranged in the middle front part of the expansion pipe 3, the expansion part 4 is provided with a plurality of open grooves 6 which are arranged along the axial direction, the open grooves 6 are uniformly distributed along the circumference, and the length of the open grooves 6 is 30 percent of the total length of the expansion bolt. Expansion head 5 is the wedge, and the diameter of its outer end is less than the diameter of its inner, is convenient for the utility model discloses a novel special expansion screw of air conditioner inserts in the hole of wall body. And a crease 7 is arranged on the expansion pipe 3 in the middle of the expansion part 4 in a direction perpendicular to the axial direction, so that the expansion of the expansion part 4 is facilitated.

The following describes the single use process of the present invention with reference to the accompanying drawings.

As shown in fig. 1 and 2, when in use, the nut end of the expansion bolt is integrally plugged into a hole drilled on a wall; then the nut 2 is locked to expand the expansion part 4 of the expansion pipe 3, and then the expansion pipe is fixed in the wall. Because its inflation portion 4 sets up in the well anterior of inflation pipe 3 inflation portion 4 is provided with a plurality of along the axially arranged open slot 6, the length of open slot 6 is 30% of expansion bolts total length, just makes the inflation degree after inflation portion 4 expands can reach 1000%, and fixed firmness is strong.

The above description is only for the embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, extension, etc. made within the spirit and principle of the present invention are all included in the protection scope of the present invention.

Claims

1. A novel expansion screw special for an air conditioner comprises an expansion head, an expansion pipe, a screw rod and a nut, wherein the expansion pipe is sleeved outside the screw rod, the front end of the screw rod is connected with the expansion head, and the rear end of the screw rod is connected with the nut through threads; the expansion bolt is characterized in that an expansion part of the expansion pipe is arranged at the middle front part of the expansion pipe, a plurality of open grooves which are arranged along the axial direction are arranged on the expansion part, and the length of each open groove is 20% -50% of the total length of the expansion bolt.

2. The novel expansion screw special for the air conditioner as claimed in claim 1, wherein the length of the open slot is 30% of the total length of the expansion bolt.

3. The novel expansion screw special for the air conditioner as claimed in claim 1, wherein the open slots are uniformly distributed along the circumference.

4. The novel special expansion screw for the air conditioner as claimed in claim 1, wherein the expansion head is wedge-shaped, and the diameter of the outer end of the expansion head is smaller than that of the inner end of the expansion head.

5. The novel expansion screw special for the air conditioner as claimed in claim 1, wherein a crease is arranged on the expansion pipe in the middle of the expansion part perpendicular to the axial direction.