Protective net mounting structure of negative pressure fan

Abstract

The utility model discloses a protective net mounting structure of a negative pressure fan, which is characterized in that when the protective net mounting structure is assembled, the local part of a metal strip is aligned with a clamping groove, and the local part of the metal strip is forced to move towards the direction of being clamped into the clamping groove through external force pressing; in the moving process, the local part of the metal strip can force the two ends of the clamping part to be away from each other to open the clamping groove so that the metal strip can be locally clamped in, then the two ends of the clamping part are forced to be close to each other through automatic recovery of the two ends of the clamping part or external force, and the hook-shaped end of the clamping part is matched to limit the metal strip so as to prevent the metal strip from exiting the clamping groove. The multiple positions of the protective net are fixed through the multiple clamping buckles, so that the whole protective net is fixed to the frame body, and compared with a traditional protective net, the overall structure is simple, and installation is very convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to negative pressure fan technical field, especially relate to a protective net mounting structure of negative pressure fan. BACKGROUND

[0002] Such as patent application number 202320879090.0 discloses a frame integral negative pressure fan safety net structure, set up several hook parts on the frame, through the hook part and the hooking groove on the safety net hooking cooperation will safety net fixed on the frame, the hook part can be integral on the frame, also can be through the artificial external force and fix the metal wire on the frame and form the hook part, in order to guarantee the fixed effect of safety net, mostly adopt the hook part of artificial bending and fix safety net, but assembly personnel when assembling safety net, need to bend to the appropriate degree one by one, and the hook part formed by bending is numerous, and the volume of negative pressure fan is bigger, the area of safety net is bigger, and the hook part required is more, there is the problem of complicated assembly. SUMMARY

[0003] The main purpose of the utility model is to provide a protective net mounting structure of negative pressure fan, which aims to optimize the installation structure of the protective net to improve the installation convenience of the protective net.

[0004] To achieve the above object, the utility model provides a protective net mounting structure of negative pressure fan, including frame, pivotable installation in frame fan blade, drive mechanism for driving fan blade pivoting and the protective net of being located in the rear side of frame, the protective net is formed by connecting a plurality of metal strips, the rear side of frame is equipped with a plurality of clamps for connecting with the protective net, the protective net is fixed on the frame through a plurality of clamps.

[0005] The clamp includes a U-shaped clamping part, the end of the clamping part is hook-shaped, a clamping groove is formed between the two ends of the clamping part for partially clamping the metal strip, the two ends of the clamping part can be deformed between the positions of moving away from each other and moving close to each other, and the two ends of the clamping part can be forced to move away from each other for partially clamping the metal strip when the metal strip is pressed in the direction of the clamping groove.

[0006] Preferably, a positioning frame is formed on the inner side of the frame, and a plurality of clamps are arranged at intervals in the positioning frame.

[0007] Preferably, the positioning frame is sheet-shaped, a plurality of positioning holes are arranged at intervals in the positioning frame, and the clamps are detachably fixed in the positioning holes.

[0008] Preferably, the clamping portion is provided with a seat on the side away from the protective net, and a ring-shaped slot is formed at the transition position of the clamping portion and the seat, and an elastic sheet is formed in the ring-shaped slot; the clamping buckle can be pivoted between a position where the elastic sheet elastically abuts against the side wall of the positioning hole and a position where the elastic sheet is away from the side wall of the positioning hole; when the elastic sheet elastically abuts against the side wall of the positioning hole, the clamping buckle is fixed to the positioning frame, and the clamping portion and the seat are respectively located on two sides of the positioning frame.

[0009] Preferably, the clamping buckle is made of plastic.

[0010] Preferably, perforations are further formed at two ends of the clamping portion.

[0011] Preferably, a hollow supporting rod is vertically fixed inside the frame, the fan leaf is pivotally installed on the supporting rod, and a plurality of clamping buckles are spaced apart along the height direction of the supporting rod on the side of the supporting rod away from the fan leaf.

[0012] Preferably, the ends of the supporting rod are formed with outwardly extending connecting pieces, and the connecting pieces respectively abut against the inner top wall and the inner bottom wall of the frame body and are locked by bolts or fixed by welding to fix the supporting rod in the frame body.

[0013] Preferably, the supporting rod is further connected with a reinforcing rod in an inclined manner, and the end of the reinforcing rod away from the supporting rod is fixed to the inner bottom wall of the frame body by welding or locking by bolts.

[0014] Preferably, the positioning frame and the frame body are integrally formed or detachably connected; when being detachably connected, the positioning frame is fixed in the frame body by screws or a buckle structure.

[0015] The utility model discloses a plurality of clamping buckles are arranged at the rear side of the frame body of the negative pressure fan, and the clamping buckles are connected with the protective net formed by a plurality of metal strips to fix the protective net at the rear side of the frame body of the negative pressure fan. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 The frame, the clamping buckle and the protective net are matched;

[0017] Fig. 2 Assembly drawing of the frame and clips;

[0018] Fig. 3 This is a 3D diagram of the clip. Detailed Implementation

[0019] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0020] It should be noted that if any directional indication (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.) is involved in the embodiments of this utility model, the directional indication is only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0021] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0022] This utility model proposes a protective net installation structure for a negative pressure fan.

[0023] In this embodiment of the utility model, such as Figs. 1 to 3 As shown, the protective net installation structure of the negative pressure fan includes a frame 1, a fan blade 2 pivotally mounted on the frame 1, a drive mechanism for driving the fan blade 2 to pivot, and a protective net 4 located on the rear side of the frame 1. The protective net 4 is formed by connecting several metal strips 41. The rear side of the frame 1 is provided with multiple clips for connecting with the protective net 4. The protective net 4 is fixed to the frame 1 by the multiple clips.

[0024] The clamping buckle comprises a U-shaped clamping part 51, the ends of the clamping part 51 are hook-shaped, a clamping groove 52 for partially clamping the metal strip 41 is formed between the two ends of the clamping part 51, the two ends of the clamping part 51 can be deformed between positions away from each other and positions close to each other, and the two ends of the clamping part 51 are forced to move away from each other for partially clamping the metal strip 41 when the metal strip 41 is pressed in the direction of the clamping groove 52.

[0025] Specifically, a positioning frame 11 is formed on the inner side of the frame body 1, and a plurality of clamping buckles are arranged at intervals in the positioning frame 11.

[0026] Specifically, the positioning frame 11 is in the shape of a sheet, a plurality of positioning holes 12 are arranged at intervals in the positioning frame 11, and the clamping buckles are detachably fixed in the positioning holes 12.

[0027] Specifically, a seat part 53 is arranged on the side of the clamping part 51 away from the protective net, an annular groove 54 is formed at the transition position of the clamping part 51 and the seat part 53, an elastic sheet 55 is formed in the annular groove 54, the clamping buckle can be pivoted between a position where the elastic sheet 55 elastically abuts against the side wall of the positioning hole 12 and a position away from the side wall of the positioning hole 12, and the clamping buckle is fixed to the positioning frame 11 when the elastic sheet 55 elastically abuts against the side wall of the positioning hole 12, and the clamping part 51 and the seat part 53 are respectively located on the two sides of the positioning frame 11. It can be understood that, during the pivoting process of the clamping buckle driven by an external force, the position where the elastic sheet 55 contacts the side wall of the positioning hole 12 can be extruded and deformed and kept in elastic abutment against the side wall of the positioning hole 12 after being stressed, thereby achieving a fixing effect similar to an interference fit.

[0028] Specifically, the clamping buckle is a plastic product.

[0029] Specifically, a through hole 56 is further formed at the two ends of the clamping part 51, so that the two ends of the clamping part 51 can be deformed.

[0030] Specifically, a hollow support rod 7 is vertically fixed inside the frame, the fan leaf 2 is pivotally installed on the support rod 7, and a plurality of clamping buckles are arranged at intervals along the height direction of the support rod 7 on the side of the support rod 7 away from the fan leaf 2.

[0031] Specifically, in this embodiment, the driving mechanism comprises a servo motor 3 and a transmission belt, the fan leaf 2 is pivotally installed on the support rod 7 through a belt pulley, and the two ends of the transmission belt are respectively connected with the belt pulley and the rotating end of the servo motor 3.

[0032] Specifically, the two ends of the support rod 7 are formed with outwardly extending connecting pieces (not shown), the two connecting pieces respectively abut against the inner top wall and the inner bottom wall of the frame body 1 and are locked by bolts or fixed by welding to fix the support rod 7 in the frame body 1.

[0033] Specific, the support rod 7 is also inclinedly connected with a reinforcing rod 71, one end of the reinforcing rod 71 away from the support rod 7 is fixed with the inner bottom wall of the frame body 1 through welding or locking through bolts.

[0034] Specific, the positioning frame 11 and the frame body 1 are integrally formed or are detachably connected, when being detachably connected, the positioning frame 11 is fixed in the frame body 1 through screws or through a buckle structure.

[0035] The utility model discloses technical scheme sets up a plurality of clamps in the rear position of the negative pressure fan frame body, and is connected with the protection net formed by a plurality of metal strips to fix the protection net in the rear of the negative pressure fan frame body, and the clamp specifically includes the U-shaped clamping part, and the end of the clamping part is hook-shaped, and the clamping part is formed with the clamping groove that can partially enter the metal strip between two ends, and when assembling, the partial metal strip is aligned with the clamping groove, and the partial metal strip is forced to move to the direction of clamping the clamping groove through external force pressing, and the partial metal strip can force the two ends of the clamping part to be away from each other to open the clamping groove during the movement to make the partial metal strip clamped, and then the two ends of the clamping part are forced to be close to each other through the automatic recovery of the two ends of the clamping part or through external force, and the hook-shaped clamping part end portion is limited to the metal strip to prevent the metal strip from exiting the clamping groove, so that the multiple positions of the protection net are fixed through a plurality of clamps to fix the protection net as a whole in the frame body, and compared with the traditional, the overall structure is simple, and the installation is very convenient.

[0036] The above only for the preferred embodiment of the utility model, and not therefore limit the patent range of the utility model, all in the utility model concept under the utility model, utilize the utility model specification and attached drawing contents make equivalent structure transformation, or direct / indirectly apply in other related technical field all include in the patent protection range of the utility model.

Claims

1. A protective net installation structure for a negative pressure fan, comprising a frame (1), fan blades (2) pivotally mounted on the frame (1), a drive mechanism for driving the fan blades (2) to pivot, and a protective net (4) disposed on the rear side of the frame (1), wherein the protective net (4) is formed by connecting a plurality of metal strips (41), characterized in that: The back side of the frame (1) is provided with a plurality of clamps for connecting with the protective net (4), and the protective net (4) is fixed to the frame (1) through the plurality of clamps. The clamp comprises a U-shaped clamping portion (51), the ends of the clamping portion (51) are hook-shaped, a clamping groove (52) is formed between the two ends of the clamping portion (51) for partially clamping the metal strip (41), and the two ends of the clamping portion (51) can be deformed between the positions of moving away from each other and moving close to each other, and the two ends of the clamping portion (51) are forced to move away from each other for partially clamping the metal strip (41) when the metal strip (41) is pressed in the direction of the clamping groove (52).

2. The protective screen mounting structure for a negative pressure fan according to claim 1, wherein: A positioning frame (11) is formed on the inner side of the frame (1), and the plurality of clamps are arranged at intervals in the positioning frame (11).

3. The screen mounting structure for a negative pressure fan according to claim 2, wherein: The positioning frame (11) is in the shape of a sheet, a plurality of positioning holes (12) are arranged at intervals in the positioning frame (11), and the clamp can be detachably fixed in the positioning hole (12).

4. The screen mounting structure for a negative pressure fan according to claim 3, wherein: A seat portion (53) is arranged on the side of the clamping portion (51) away from the protective net, an annular groove (54) is formed at the transition position of the clamping portion (51) and the seat portion (53), an elastic sheet (55) is formed in the annular groove (54), the clamp can be pivoted between the position of making the elastic sheet (55) elastically abut against the side wall of the positioning hole (12) and the position of moving away from the side wall of the positioning hole (12), the clamp is fixed to the positioning frame (11) when the elastic sheet (55) elastically abuts against the side wall of the positioning hole (12), and the clamping portion (51) and the seat portion (53) are respectively located on the two sides of the positioning frame (11).

5. The screen mounting structure for a negative pressure fan according to claim 1, wherein: The clamp is a plastic product.

6. The screen mounting structure for a negative pressure fan according to claim 1, wherein: Perforations (56) are further formed at the two ends of the clamping portion (51).

7. The screen mounting structure for a negative pressure fan according to claim 1, wherein: A hollow support rod (7) is vertically fixed inside the frame, the fan leaf (2) can be pivotally installed on the support rod (7), and a plurality of clamps are arranged at intervals along the height direction of the support rod (7) on the side of the support rod (7) away from the fan leaf (2).

8. The screen mounting structure for a negative pressure fan according to claim 7, wherein: The ends of the support rod (7) are formed with outwardly extending connecting plates, the two connecting plates respectively abut against the inner top wall and the inner bottom wall of the frame (1) and are locked by bolts or fixed by welding to fix the support rod (7) in the frame (1).

9. The screen mounting structure for a negative pressure fan according to claim 8, wherein: The support rod (7) is further connected with a reinforcing rod (71) at an angle, one end of the reinforcing rod (71) away from the support rod (7) is fixed to the inner bottom wall of the frame (1) by welding or locking by bolts.

10. The screen mounting structure for a negative pressure fan according to claim 2, wherein: The positioning frame (11) and the frame (1) are integrally formed or detachably connected, when being detachably connected, the positioning frame (11) is fixed in the frame (1) by screw locking or a buckle structure.

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