Connecting piece and negative pressure fan frame with same

Abstract

According to the technical scheme, connecting pieces are arranged at the upper end and the lower end of a stand column of a negative pressure fan, each connecting piece comprises a fixing plate and a positioning portion, a through hole is formed in the surface of each fixing plate, and each positioning portion is formed in the corresponding through hole formed in the corresponding fixing plate. The positioning part is hollow, an internal thread groove used for fastening a screw rod or a bolt is formed in the positioning part, the internal thread groove is communicated with the through hole, during specific use, the external screw rod or bolt is directly in threaded connection through the internal thread groove, and then the stand column is fixed in a frame body of the negative pressure fan; due to the arrangement of the internal thread groove, a nut is omitted, raw material consumption is further saved, meanwhile, only a bolt or a screw needs to be installed during assembly, assembly is rapid and convenient, and the connecting structure has the advantages of being high in assembly speed and small in part material consumption.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical parts, in particular to a connecting piece and a negative pressure fan frame having the connecting piece. Background Art

[0002] As a common ventilation equipment, negative pressure fans are widely used in many fields such as industry, agriculture and civil use. During the installation process of negative pressure fans, columns need to be set between the frames. The columns are used to install impeller components. In the existing technology, the columns are fixed to the frames by screws and nuts. However, in the centralized production of negative pressure fans, this fixed connection method is slow to assemble, and the screws and nuts need to be connected at the same time. In addition, each column requires a large number of screws and nuts, which results in a large amount of consumed parts and materials. The column installation process of the existing negative pressure fan has the technical defects of slow assembly speed and large consumption of parts and materials, which need to be solved. Utility Model Content

[0003] The main purpose of the utility model is to provide a connecting piece and a negative pressure fan frame having the same, aiming to solve the technical defects of the negative pressure fan in the prior art, such as slow column assembly speed and large consumption of component materials.

[0004] To achieve the above objectives, the present invention provides a connector, comprising:

[0005] A fixing plate, wherein a through hole is formed on a surface of the fixing plate;

[0006] The positioning portion is formed at the through hole opened in the fixing plate. The positioning portion is hollow and has an internal thread groove formed inside for cooperating with a fastening screw or bolt for installation. The internal thread groove is connected to the through hole.

[0007] Furthermore, the positioning portion is integrally stamped and formed on the fixing plate.

[0008] Furthermore, at least two positioning portions are provided, and the positioning portions are evenly distributed in pairs on both sides of the fixing plate for stamping.

[0009] Furthermore, a column is installed on the connecting member, and the positioning portion is formed on the same side of the fixing plate and is located on the side where the column is installed.

[0010] Furthermore, a column is installed on the connecting member, and the positioning portion is formed on the same side of the fixing plate and is located on the opposite side of the column installation.

[0011] Furthermore, the positioning portion is further provided with a raised portion at the forming portion of the fixing plate for accommodating a portion of the screw or bolt, the raised portion is hollow, and the positioning portion is located at the end of the raised portion.

[0012] Furthermore, the shape of the raised portion formed in the direction of extending from one end of the fixing plate to the positioning portion is a hole-like structure with a gradually decreasing diameter.

[0013] Furthermore, the through hole includes a first hole position located on the fixing plate and a second hole position located on the positioning portion, and an external screw or bolt is inserted into and installed through the first hole position or the second hole position, and is spirally fixed by the internal thread groove on the positioning portion.

[0014] The present utility model also proposes a negative pressure fan frame with the above-mentioned connecting member, including a connecting member and a sealed molded frame, a column is arranged between the frames, the connecting member is fixedly connected to the frame, and the upper and lower ends of the column are installed on the connecting member and fixedly connected between the frames through the connecting member.

[0015] Furthermore, the frame is provided with a through hole or an abutment groove at a position perpendicular to the first hole position and the second hole position.

[0016] The technical solution of the present invention is to provide connecting pieces at the upper and lower ends of the column of the negative pressure fan, and the connecting piece includes a fixing plate and a positioning part. A through hole is provided on the surface of the fixing plate, and the positioning part is formed at the through hole provided in the fixing plate. The positioning part is hollow and an internal thread groove for tightening the screw or bolt is formed inside. The internal thread groove is connected with the aforementioned through hole. During specific use, the external screw or bolt is directly threadedly connected through the internal thread groove, thereby fixing the column between the frames of the negative pressure fan. The connecting piece of the present invention is suitable for a variety of equipment that utilizes threaded connections, a typical example of which is to be set on the negative pressure fan to install the column. The setting of the internal thread groove not only eliminates the need for nuts, thereby saving raw material consumption, but also only requires the installation of bolts or screws during assembly, and the assembly is fast and convenient. The present invention has the beneficial technical effects of fast assembly speed and low consumption of component materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the three-dimensional structure of the connector Figure 1 ;

[0018] Figure 2 Schematic diagram of the three-dimensional structure of the connector Figure 2 ;

[0019] Figure 3 Schematic diagram of the plane structure of the connector;

[0020] Figure 4 This is a schematic diagram of a first embodiment of a connector being installed on a column;

[0021] Figure 5 Schematic diagram of a first embodiment of a negative pressure fan frame;

[0022] Figure 6This is a schematic diagram of a second embodiment of a connector being installed on a column;

[0023] Figure 7 Schematic diagram of a second embodiment of a negative pressure fan frame.

[0024] The above drawings include the following reference numerals:

[0025] 1. Connector; 11. Fixing plate; 111. Through hole; 111A. First hole position; 111B. Second hole position; 12. Positioning portion; 121. Internal thread groove; 122. Raised portion; 2. Column; 3. Negative pressure fan frame; 31. Frame; 32. Abutment groove. DETAILED DESCRIPTION

[0026] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...), then the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0028] In addition, if there are descriptions involving "first" or "second" in the embodiments of the present invention, the descriptions of "first" or "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0029] The utility model provides a connecting piece 1.

[0030] In the embodiment of the present utility model, Figures 1 to 7As shown, the connector 1 includes a fixing plate 11 and a positioning portion 12. A through hole 111 is provided on the surface of the fixing plate 11. The positioning portion 12 is formed at the through hole 111 provided on the fixing plate 11. The positioning portion 12 is hollow and has an internal thread groove 121 formed inside for cooperating with a fastening screw or bolt for installation. The internal thread groove 121 is connected to the through hole 111.

[0031] In an embodiment of the present invention, the positioning portion 12 is integrally stamped and formed on the fixing plate 11. The advantage of stamping is that the structure is stable and the mold structure produced is consistent. The structure obtained by integral stamping is suitable for the fastening characteristics required by the connecting piece.

[0032] Specifically, in order to better connect with the external frame, at least two positioning parts 12 are provided, and the positioning parts 12 are evenly distributed in pairs on both sides of the fixing plate 11 for stamping. Figure 4 and Figure 6 In the embodiment shown, there are two positioning parts 12, one on the left and one on the right side of the fixing plate 11, with an external column 2 welded in the middle. This structural form of setting the positioning part 12 will improve the fixing effect of the connecting plate on the external column 2.

[0033] In some preferred embodiments of the present invention, a column 2 is mounted on the connector 1, and the positioning portion 12 is formed on the same side of the fixing plate 11 and is located on the side where the column 2 is mounted. Figure 4 and Figure 5 As shown, the positioning portion 12 and the column 2 are on the same side. When installing external bolts or screws, the bolts or screws extend from the opposite side of the column 2 into the internal thread groove 121 for fixation.

[0034] In some other embodiments of the present invention, a column 2 is installed on the connector 1, and the positioning portion 12 is formed on the same side of the fixing plate 11 and on the opposite side of the column 2. Figure 6 and Figure 7 As shown, the positioning portion 12 is on the opposite side of the column 2 . When installing external bolts or screws, the bolts or screws extend into the internal thread groove 121 from the same side of the column 2 for fixation.

[0035] In the embodiment of the present invention, the positioning portion 12 is further provided with a raised portion 122 for accommodating part of the screw or bolt at the molding of the fixing plate 11. The raised portion 122 is hollow, and the positioning portion 12 is located at the end of the raised portion 122. Figure 5 As shown, the raised portion 122 wraps around the portion of the bolt shown in the figure, thereby providing a certain degree of protection for the bolt.

[0036] Preferably, the protrusion 122 is formed in a hole-like structure with a gradually decreasing diameter in a direction extending from one end of the fixing plate 11 to the positioning portion 12. This structure has stronger stability due to the two-side edge structure generated by the shrinking diameter.

[0037] Specifically, the through hole 111 includes a first hole position 111A located on the fixing plate 11 and a second hole position 111B located on the positioning portion 12. The external screw or bolt is inserted into the first hole position 111A or the second hole position 111B for installation, and is spirally fixed by the internal thread groove 121 on the positioning portion 12. For detailed description of this part, please refer to the subsequent negative pressure fan frame 3 part.

[0038] The present invention also provides a negative pressure fan frame 3 having a connecting member 1, such as Figure 5 and Figure 7 As shown, this negative pressure fan frame 3 with a connector 1 includes the connector 1 and a sealed frame 31. A column 2 is provided between the frame 31. The connector 1 is fixedly connected to the frame 31, and the upper and lower ends of the column 2 are mounted on the connector 1 and fixedly connected to the frame 31 through the connector 1. The structure of the connector 1 in this negative pressure fan frame 3 refers to the above-mentioned embodiment. Since the negative pressure fan frame 3 adopts all the technical solutions of all the above-mentioned embodiments of the connector 1, it has at least all the beneficial effects brought about by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

[0039] Furthermore, in order to better assemble the connector 1, the frame 31 is provided with a through hole or abutment groove 32 at a position perpendicular to the first hole position 111A and the second hole position 111B, such as Figure 5 In the first embodiment of the present invention shown, the column 2 is installed on the same side of the connecting member 1, and a through hole (not shown) is provided at the position of the upper frame corresponding to the first hole 111A and the second hole 111B. The external bolt passes through the through hole and extends into the first hole 111A, and then extends from the second hole 111B and is screwed into the internal thread groove 121. Figure 7 In the second embodiment of the present invention shown, the column 2 is installed on the opposite side of the connecting member 1, and an abutment groove 32 is provided at a position corresponding to the positioning portion 12. The positioning portion 12 is embedded in the abutment groove 32. The external bolt passes through the first hole 111A and abuts against the second hole 111B. At the same time, the bolt is fixed to the internal thread groove 121.

[0040] The above are only preferred embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the utility model concept, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A connector, characterized in that: include: A fixing plate, wherein a through hole is formed on a surface of the fixing plate; The positioning portion is formed at the through hole opened in the fixing plate. The positioning portion is hollow and has an internal thread groove formed inside for cooperating with a fastening screw or bolt for installation. The internal thread groove is connected to the through hole.

2. The connector according to claim 1, wherein: The positioning portion is integrally stamped and formed on the fixing plate.

3. The connector according to claim 2, wherein: At least two positioning parts are provided, and the positioning parts are evenly distributed in pairs on both sides of the fixing plate and are stamped and formed.

4. The connector according to claim 3, wherein: A column is installed on the connecting piece, and the positioning portion is formed on the same side of the fixing plate and is located on the side where the column is installed.

5. The connector according to claim 3, wherein: A column is installed on the connecting piece, and the positioning portion is formed on the same side of the fixing plate and is located on the opposite side of the column installation.

6. The connector according to claim 1, wherein: The positioning portion is further provided with a raised portion for accommodating a portion of the screw or bolt at the forming portion of the fixing plate. The raised portion is hollow, and the positioning portion is located at the end of the raised portion.

7. The connector according to claim 6, wherein: The shape of the raised portion formed in the direction of extending from one end of the fixing plate to the positioning portion is a hole-like structure with a gradually decreasing diameter.

8. The connector according to any one of claims 1 to 7, wherein: The through hole includes a first hole position located on the fixing plate and a second hole position located on the positioning portion. An external screw or bolt is inserted into the first hole position or the second hole position for installation and is screwed fixed by the internal thread groove on the positioning portion.

9. A negative pressure fan frame, comprising a connector and a sealed frame, wherein columns are provided between the frames, characterized in that: The connecting member is the connecting member described in claim 8, which is fixedly connected to the frame, and the column is installed on the connecting member and fixedly connected between the frames through the connecting member.

10. The negative pressure fan frame according to claim 9, characterized in that: The frame is provided with a through hole or an abutting groove at a position perpendicular to the first hole position and the second hole position.

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