CN2749590Y - Improvement of Pre-hook for Dust Collecting Bag of Dust Collector - Google Patents

Abstract

The utility model relates to an improvement that the dust bag of dust collector was colluded in advance, should collude in advance and form by the integrative coiling of the metal strip that possesses suitable flexibility, it has a joint portion to make its one end coiling, can supply the locking on the ring wall edge, extend by joint portion again and coil a torsional spring portion, extend one by torsional spring portion and pull the portion of pulling, and pull the terminal bending type of portion and form a portion of colluding, make this portion of colluding accessible keep elasticity to support on the ring wall edge by the torsion effect of torsional spring portion, when the sack position that supplies the dust bag stretches into the position of colluding along the marginal sliding sleeve of ring wall, must firmly collude the location by its elasticity in advance, in order to facilitate the follow-up fixed of dust bag.

Description

The Improvement of the Pre-hook of the Dust Collecting Bag of the Dust Machine

technical field

The utility model is related to a dust collector, in particular to a dust collecting bag which is installed on the ring wall edge of the exhaust box of the dust collector, and the dust collecting bag which can be slipped on the ring wall edge can be pre-hooked and positioned. Improvement of the pre-hook for subsequent fixing of the dust bag.

Background technique

Generally, medium and large dust collectors mostly have a row of bellows, and one or more sets of collars are arranged on the exhaust box, so that after the pocket part of the dust bag is slid and positioned, it can pass through a ring. However, the dust bag has a considerable weight, and when it slides on the ring, if it is not pre-fixed or supported, it is almost impossible to implement the operation of the ring with the force of a single person , Therefore, someone has invented a pre-fixed structure, such as the patent application of No. 437447 "dust bag positioning structure of dust collector", please refer to Fig. 1, it is in the middle ring body wall of dust collector A plurality of positioning bodies 10 which are integrally bent from a metal plate body are installed at predetermined positions on the edge, and a connecting part 11 is provided on the positioning body 10 to join with the middle ring body, and a turning part 12 and a hook are extended from the connecting part 11 Part 13, after a dust bag is slipped on the middle ring body, it can be hooked and positioned by the hooked part 13.

However, the positioning body 10 is directly bent at a right angle to form the turning portion 12. Although the hook portion 13 can have a suitable elasticity to elastically resist the peripheral wall edge of the middle ring body, the elasticity of this structure is relatively poor, and it is easy to produce Elastic fatigue prevents the dust bag from being effectively and reliably pre-hooked and positioned by the hook part 13, making it difficult to carry out the follow-up fixing operation of the dust bag; secondly, the positioning body is formed by bending a metal plate and needs to be The end of the hook part 13 is processed into a pointed cone to facilitate hooking, so its production is still not very convenient. In addition, its connecting part 11 adopts a fixed connection. When errors occur in the fixed positions of each positioning body 10, That is to say, it is impossible to adjust the displacement to bear the force evenly, and it will cause the dust bag to be skewed, and it must be repositioned and fixed, which is not ideal in use.

Utility model content

The purpose of the utility model is to overcome the improvement of the pre-hanging hook of the dust bag of the dust collector in the prior art.

The utility model provides an improvement of the pre-hanging hook of the dust collection bag of the dust collector. The pre-hanging hook is formed by winding a metal strip with proper flexibility, so that one end is wound to form a joint, which can be used for locking. Fix it on the edge of the ring wall, extend and wrap a torsion spring part from the joint part, extend a trigger part from the torsion spring part, and bend a hook part at the end of the trigger part, so that the hook part can pass through the torsion spring part. The torsion effect of the spring part keeps the elasticity against the edge of the ring wall, so that when the bag opening of the dust bag slides along the edge of the ring wall and extends into the hook part, it must be firmly hooked and positioned by its elasticity in advance, so as to facilitate the collection The dust bag is subsequently fixed.

The pre-hanging hook provided by the utility model can make the integrally connected hook parts play a more reliable hooking force through the continuous ring-shaped torsion spring part itself having better elastic torsion force and fatigue resistance characteristics, and has a better hooking force. Long service life to avoid rapid fatigue.

Description of drawings

Fig. 1 is the appearance schematic diagram of existing positioning body;

Fig. 2 is a schematic diagram of the plane appearance of the dust collector of the present utility model;

Fig. 3 is the combined appearance diagram of the pre-hanging hook of the present invention installed on the edge of the ring wall;

Fig. 4 is a schematic diagram of the exploded state of the third figure of the utility model;

Fig. 5 is a schematic side view of the installation state of the pre-hook of the utility model;

Fig. 6 is a schematic diagram of the sliding sleeve and the hooking state of the dust bag of the present invention;

Fig. 7 is a schematic side view of the pre-hanging hook of the present invention being pulled open.

Detailed ways

First of all, please refer to Figures 2 to 5. The utility model provides an improved preferred embodiment of a pre-hooked dust bag for a dust collector. The dust collector includes a row of air boxes 20, and the air exhaust box 20 is equipped A plurality of collars 30 are provided, and a pressing ring groove 321 is recessed on the ring wall edge 32 near the air exhaust port 31 for the pocket part 41 of the dust bag 40 to be slidably positioned on the collar 30 When the ring wall edge 32 of the ring wall edge 32 is used, a hoop 50 must be used to fasten and lock the dust bag 40 on the tight ring groove 321, and a hooking ring is recessed on the ring wall edge 32 inside the tight ring groove 321. Groove 322, at the same time, a plurality of pre-hanging hooks 60 are installed on the ring wall edge 32 on the inner side of the ring groove 322, so that the dust bag 40 can be pre-hooked by the pre-hanging hooks 60 before being locked by the hoop 50. Locator; where:

The collar 30 is provided with a plurality of screw holes 323 at an appropriate part of the ring wall edge 32 inside the hooking ring groove 322;

The pre-hanging hook 60 is integrally wound by a metal strip with appropriate flexibility, so that one end is wound to form a joint 61, and a U-shaped groove 611 is formed at the two ends of the joint 61, which can be passed through respectively. Pad a washer 612 and an adjusting bolt 613 to limit the penetration, and fix it on the relative screw hole 323 of the ring wall edge 32, and through the proper tightness of the adjusting bolt 613, it can be used as a shaft along the collar 30. To adjust the displacement, the joint part 61 is extended and wound to form a continuous ring-shaped torsion spring part 62, and the torsion spring part 62 extends with a straight pull part 63, which is more at the end of the pull part 63 A hook portion 64 is formed by bending toward the ring wall edge 32 , so that the hook portion 64 can elastically abut against the hook ring groove 322 of the ring wall edge 32 through the torsion force of the torsion spring portion 62 .

The above is an overview of the structure, position and interconnection of each component of the utility model; then, the action of each component of the utility model and the expected effect statement are as follows:

Please refer to Fig. 6, when the pre-hanging hook 60 of the present utility model is used, it is mainly to slide the pocket part 41 of the dust bag 40 inward along the ring wall edge 32 of the collar 30, and then touch the top to open each pre-hanging hook. The hook portion 64 of the hook 60 extends inwardly. At this time, when the user releases the dust bag 40, the pocket portion 41 of the dust bag 40 will be elastically pressed against the hook portion 64 inwardly. The threading hook is positioned at the hook ring groove 322, so as to achieve a firm pre-positioning effect and facilitate the tightening operation of the subsequent hoop 50; The pull part 63 of the pre-hanging hook 60 needs to be elastically pulled outward, so that the hook part 64 can be separated from the bag mouth part 41, and the dust bag 40 can be removed smoothly.

Finally, the advantages of the utility model and the effects that can be achieved are described as follows:

1. The pre-hanging hook 60 of the present utility model utilizes the torsion spring part 62 formed in a continuous ring shape. Because it has better elastic torsion force and fatigue resistance characteristics, it can make the hook part 64 integrally connected through the trigger part 63 play a good role. The more reliable hooking force ensures the pre-hooking effect of the dust bag 40. At the same time, it also has a longer service life, which can avoid fast fatigue and loss of the hooking force.

2. The joint part 61 of the pre-hook 60 of the present invention can adjust the displacement by the tightness of the adjusting bolt 613, so each pre-hook 60 can be stressed evenly, and the dust bag 40 can be prevented from being skewed.

3. The utility model utilizes the elastic abutment between the hook part 64 of the pre-hanging hook 60 and the hook ring groove 322 recessed in the ring wall edge 32, so that the pocket part 41 of the dust bag 40 can be slightly inclined, so as to It is beneficial to the hooking of the hook portion 64 and has a better hooking and positioning effect.

To sum up, the utility model has excellent progressive practicability among similar products. At the same time, the technical data of this type of structure has been searched at home and abroad, and no similar structure has been found in the literature. Therefore, The utility model has already possessed the creation patent requirement.

The above is only a preferred feasible embodiment of the utility model, so all equivalent structural changes made by applying the specification of the utility model and the scope of the patent application should be included in the scope of the patent of the utility model.

Claims (3)

1. An improvement of the pre-hanging hook of the dust bag of the dust collector. The pre-hanging hook is installed at the predetermined position of the ring wall edge of the exhaust box of the dust collector near the outlet air, and is used for the pre-positioning of the dust bag when it is assembled; its Characterized by: The pre-hanging hook is formed by coiling a flexible metal strip integrally, so that one end is coiled to form a joint, which is connected with the edge of the ring wall, and the joint is extended and wound to form a continuous ring. The torsion spring part, and the torsion spring part is extended with a straight pull part, and the end of the pull part is bent toward the edge of the ring wall to form a hook part, so that the hook part passes the torsion effect of the torsion spring part Keep elastic against the edge of the ring wall, so that when the mouth of the dust bag slides along the edge of the ring wall and extends into the position of the hook portion, it can be elastically hooked and positioned in advance by the hook portion. 2. The improvement of the pre-hanging hook of the dust bag of the dust collector as claimed in claim 1, characterized in that, the two ends of the joint part are each wound to form a U-shaped groove, which is adjusted by the limit of the threading and stretching respectively. The bolts are fixed on the edge of the ring wall, and the displacement is adjusted appropriately. 3. The improvement of the pre-hanging hook of the dust bag of the dust collector according to claim 1, characterized in that, the hook part of the pre-hanging hook is a hooking ring that is elastically pressed against the edge of the ring wall and recessed. in the slot.

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