Assembly Structure of Impurity Collection Box for Vaporization Chamber of Steam Electric Iron

Abstract

The present invention discloses an assembly structure of an impurity collection box for a vaporization chamber of a steam iron, belonging to the steam iron. The plug connection structure in the prior art has poor reliability. The present invention provides a circular hole on the rear cover, with a locking groove and a channel provided on the wall of the circular hole. An operable tail cover and a locking spring are provided on the impurity collection box. The tail cover is telescopically arranged relative to the impurity collection box, and a locking block is provided on the tail cover. The locking spring applies a backward elastic force to the tail cover to urge the locking block to be located in the locking groove to lock the impurity collection box. Press the tail cover forward to make the locking block disengage from the locking groove, and rotate the tail cover to make the locking block correspond to the channel to take out the impurity collection box from the circular hole.

Description

[0001] This invention is a divisional application of the invention patent application with the application date of November 21, 2016, application number 201611050076.0, and title "Assembly Structure of Impurity Collection Box for Vaporization Chamber of Steam Electric Iron". Technical Field

[0002] This invention belongs to steam electric irons, and specifically relates to an assembly structure of an impurity collection box for the vaporization chamber of a steam electric iron. Background Art

[0003] In order to remove calcareous debris or water scale particles from the evaporation chamber, the patent document with the publication number CN1084593A opens a descaling hole leading to the rear of the iron in the evaporation chamber, and this hole is plugged with a replaceable closure. In contrast, the plug disclosed in the patent document with the publication number CN103061098A has better operability, and such a plug is also introduced in the patent document with the publication number CN103061097A. This plug is locked or unlocked on the outer shell by rotating a tongue piece, and the connection structure has poor reliability. Since the steam generated during use can scald the user, it is necessary to ensure reliable assembly of the plug. However, after repeated use, the components constituting the plug will become loose (such as the tongue piece); when the iron is placed upright using the rear cover during use, it will cause an obstacle. Summary of the Invention

[0004] The purpose of this invention is to overcome the defect of poor reliability of the plug connection structure in the prior art, and provide an assembly structure of an impurity collection box for the vaporization chamber of a steam electric iron different from the prior art, ensuring its convenient operation and using elasticity to ensure reliable assembly of the impurity collection box.

[0005] To achieve the above purpose, the assembly structure of the impurity collection box for the vaporization chamber of the steam electric iron of this invention includes a rear cover, a conduit extending backward and upward and communicating with the vaporization chamber, and an impurity collection box assembled on the rear cover and cooperating with the rear end of the conduit. The impurity collection box has a scale collection box extending into the conduit. Its characteristics are: there is a round hole corresponding to the conduit on the rear cover, a locking groove facing forward and a channel beside the locking groove are provided on the wall of the round hole. The impurity collection box has an operable tail cover and a locking spring. The tail cover is configured to move back and forth on the impurity collection box and a locking block is provided on the tail cover. The locking spring applies a backward elastic force to the tail cover to prompt the locking block to be located in the locking groove to lock the impurity collection box. Press the tail cover forward to make the locking block disengage from the locking groove, and rotate the tail cover to make the locking block correspond to the channel to take out the impurity collection box from the round hole.

[0006] As a preferred technical means: The channel is formed by longitudinal ribs provided on the wall of the round hole, and the locking groove is formed by longitudinal ribs and circumferential ribs provided on the wall of the round hole.

[0007] As a preferred technical means: The circumferential rib is annular and has a notch corresponding to the channel, and the longitudinal rib is located in front of the circumferential rib.

[0008] As a preferred technical means: Limiting ribs for restricting the lock block within the range corresponding to the locking groove and the channel are provided on the wall of the round hole.

[0009] As a preferred technical means: The impurity collection box includes a cylindrical fixed seat, snap legs are provided on the fixed seat, a card slot is provided on the tail cover, the tail cover is sleeved on the fixed seat, and the snap legs are located within the card slot to achieve the front-back movement configuration of the tail cover.

[0010] As a preferred technical means: The locking spring is a spiral compression spring supported at both ends on the fixed seat and the tail cover.

[0011] As a preferred technical means: A positioning flange is provided on the outer wall of the fixed seat, a positioning wall is provided at the inner end of the round hole, and when the lock block is located in the locking groove to lock the impurity collection box, the positioning flange contacts the positioning wall by the elastic force of the locking spring.

[0012] As a preferred technical means: The scale collection box is made of an elastic material and has a turned-out edge. The rear end of the scale collection box is located within the fixed seat, and the turned-out edge is snap-connected to the front end of the fixed seat.

[0013] As a preferred technical means: A sealing ring that contacts the inner wall of the conduit is formed at the front end of the scale collection box.

[0014] As a preferred technical means: A gripping portion is provided on the tail cover.

[0015] In the present invention, a round hole is provided on the rear cover, a locking groove and a channel are provided on the wall of the round hole, an operable tail cover and a locking spring are provided on the impurity collection box, the tail cover is telescopically configured relative to the impurity collection box, a lock block is provided on the tail cover, the locking spring applies a backward elastic force to the tail cover to urge the lock block to be located in the locking groove to lock the impurity collection box, and by pressing the tail cover forward to make the lock block disengage from the locking groove and rotating the tail cover to make the lock block correspond to the channel, the impurity collection box can be taken out from the round hole.

[0016] With the structure of the present invention, the impurity collection box can be simply and conveniently taken out from the steam iron to pour out impurities, and can be easily installed into the steam iron. Especially in the locked state, the locking spring's elastic force prompts the locking block to be located in the locking groove to lock the impurity collection box. After repeated use, the impurity collection box can still be reliably assembled and prevent steam leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is an exploded schematic view of the assembly structure of the impurity collection box in the vaporization cavity of the steam iron of the present invention;

[0018] Figure 2 is a schematic view of the impurity collection box of the present invention;

[0019] Figure 3 is a schematic view of the cooperation between the impurity collection box and the conduit of the present invention;

[0020] Figure 4 is a partial cross-sectional schematic view of the assembly of the impurity collection box and the rear cover of the present invention;

[0021] Figure 5 is Figure 4 the schematic cross-sectional structure view in the A-A direction of;

[0022] Figure 6 is Figure 5 the schematic view when the tail cover shown can be taken out after rotating an angle;

[0023] Figure 7 is the cross-sectional schematic view of the round hole on the rear cover of the present invention;

[0024] Figure 8 is a partial three-dimensional schematic view of the rear cover of the present invention;

[0025] 01 - Rear cover: 11 - Round hole, 12 - Locking groove, 13 - Channel, 14 - Longitudinal rib, 15 - Circumferential rib, 16 - Limiting rib, 17 - Positioning wall, 18 - Wall of the round hole;

[0026] 02 - Vaporization cavity;

[0027] 03 - Conduit;

[0028] 04 - Impurity collection box: 41 - Scale collection box, 42 - Tail cover, 43 - Locking spring, 44 - Locking block, 45 - Fixed seat, 46 - Buckle foot, 47 - Card slot, 48 - Positioning flange, 49 - Flanged edge, 410 - Sealing ring, 411 - Pinching part;

[0029] 100 - Steam iron. DETAILED DESCRIPTION OF THE INVENTION

[0030] The present invention will be further described below in conjunction with the accompanying drawings of the specification.

[0031] As Figure 1-8 shown, the assembly structure of the impurity collection box of the steam electric iron of the present invention is located at Figure 1 the rear of the steam electric iron 100 shown, and it includes a rear cover 01, a conduit 03 extending backward and upward and communicating with the vaporization chamber 02 (see Figure 2 ), and an impurity collection box 04 assembled on the rear cover 01 and cooperating with the rear end of the conduit (see Figure 2-4 ). The impurity collection box 04 has a scale collection box 41 extending into the conduit 03 (see Figure 3 ). Therefore, during use, the entire electric iron can be placed upright through the rear cover 01, and impurities such as scale generated in the vaporization chamber can enter the scale collection box through the conduit and be temporarily stored in the scale collection box. The entire impurity collection box can be removed to pour out the impurities such as scale in the scale collection box. There is a circular hole 11 corresponding to the conduit on the rear cover 01 (see Figure 7-8 ). A locking groove 12 facing forward and a channel 13 located beside the locking groove are provided on the wall 18 of the circular hole. The impurity collection box 04 has an operable tail cover 42 and a locking spring 43. The tail cover 42 is configured to move back and forth on the impurity collection box and a locking block 44 is provided on the tail cover 42. Specifically, the tail cover 42 is in a sleeve shape, the locking block 44 is located on the outer surface of the tail cover, and the locking spring 43 applies a backward elastic force to the tail cover to urge the locking block 44 to be located in the locking groove 12 to lock the impurity collection box. Press the tail cover 42 forward to make the locking block 44 disengage from the locking groove 12, and rotate the tail cover 42 to make the locking block 44 correspond to the channel 13 to remove the impurity collection box from the circular hole.

[0032] Specifically, see Figure 7-8 , the channel 13 is surrounded by longitudinal ribs 14 provided on the wall 18 of the circular hole, and the locking groove 12 is surrounded by the longitudinal ribs 14 and circumferential ribs 15 provided on the wall 18 of the circular hole. The circumferential rib 15 is in a circular ring shape and is provided with a notch corresponding to the channel. The longitudinal rib is located in front of the circumferential rib. When installing the impurity collection box, the circular circumferential rib positions the impurity collection box and guides the impurity collection box when rotating the impurity collection box, so it is beneficial for the locking block to be aligned with the channel.

[0033] See Figure 7-8 , a limiting rib 16 that restricts the locking block 44 within the corresponding locking groove and channel range is provided on the wall 18 of the circular hole. As shown in the figure, this positioning rib shares the longitudinal rib 14 that forms the locking groove 12 and the channel 13. When installing or removing the impurity collection box, it is not easy to rotate the impurity collection box too much.

[0034] The impurity collection box 04 includes a cylindrical fixing seat 45. The fixing seat 45 is provided with buckle feet 46, and the end cover 42 is provided with a clamping groove 47. The end cover 42 is sleeved on the fixing seat 45 and the buckle feet 46 are located in the clamping groove 47 to realize the front-back movement configuration of the end cover. The locking spring 43 is a helical compression spring supported at both ends on the fixing seat and the end cover (see Figure 3-4 ). Therefore, in the assembled locked state, pressing the end cover can make it move forward, and it will reset backward under the elastic force of the locking spring.

[0035] To ensure that the impurity collection box is installed in place, a positioning flange 48 is provided on the outer wall of the fixing seat 45, and a positioning wall 17 is provided at the inner end of the round hole 11. When the lock block is located in the locking groove and locks the impurity collection box, the positioning flange 48 contacts the positioning wall 17 by the elastic force of the locking spring (see Figure 4 ). Accordingly, while locking the impurity collection box, the locking spring can also maintain the cooperation between the components of the impurity collection box and between the impurity collection box and the rear cover and the conduit.

[0036] The dirt collection box 41 is made of an elastic material and has an outwardly turned edge 49. The rear end of the dirt collection box 41 is located inside the fixing seat 45, and the outwardly turned edge 49 is snap-connected with the front end of the fixing seat 45 through the cooperation of a ring groove and a ring flange.

[0037] A sealing ring 410 that contacts the inner wall of the conduit is formed at the front end of the dirt collection box 41 (see Figure 3 ).

[0038] The end cover 42 is provided with a gripping portion 411 (see Figure 1 ).

[0039] When the impurity collection box 04 is to be installed into the electric iron, the lock block 44 faces the channel 13 and the impurity collection box 04 is placed into the round hole 11 until the positioning flange 48 contacts the positioning wall 17 and the end cover 42 is further pushed into the iron, so that the lock block 44 crosses the locking groove 12. Then, the end cover 42 is rotated to make the lock block 44 deviate from the channel 13 and correspond to the locking groove 12, and then the end cover 42 is released. The end cover 42 will move backward under the action of the locking spring 43 until the lock block 44 is located in the locking groove 12, that is, the impurity collection box 04 is installed into the electric iron and locked (see Figure 4-5 ).

[0040] When the impurity collection box is to be taken out of the electric iron, first push the end cover 42 inward into the iron to make the end cover move inward and the lock block 44 disengage from the locking groove 12. Then, rotate the end cover 42 in the reverse direction to make the lock block deviate from the locking groove 12 and correspond to the channel 13 (see Figure 6 ), and then pinch the gripping portion 411 of the end cover 42 to take out the entire impurity collection box.

Claims

1. Assembly structure of impurity collection box for vaporization chamber of steam electric iron, including a rear cover (01), a conduit (03) extending backward and upward and communicating with the vaporization chamber (02), and an impurity collection box (04) assembled on the rear cover and cooperating with the rear end of the conduit. The impurity collection box (04) has a scale collection box (41) extending into the conduit. Characterized in that: The rear cover (01) has a round hole (11) corresponding to the conduit. On the wall (18) of the round hole, there is a locking groove (12) facing forward and a channel (13) beside the locking groove. The impurity collection box (04) has an operable tail cover (42) and a locking spring (43). The tail cover (42) is configured to move back and forth on the impurity collection box and a locking block (44) is provided on the tail cover. The locking spring (43) applies a backward elastic force to the tail cover (42) to urge the locking block (44) to be located in the locking groove (12) to lock the impurity collection box (04). Press the tail cover forward to make the locking block (44) disengage from the locking groove (12), and rotate the tail cover (42) to make the locking block (44) correspond to the channel (13) to take out the impurity collection box (04) from the round hole (11). The impurity collection box (04) includes a cylindrical fixed seat (45). On the fixed seat (45), there are snap legs (46). On the tail cover (42), there is a card slot (47). The tail cover (42) is sleeved on the fixed seat (45) and the snap legs (46) are located in the card slot (47) to realize the back-and-forth movement configuration of the tail cover. The scale collection box (41) is made of elastic material and has an outward-turned edge (49). The rear end of the scale collection box (41) is located inside the fixed seat, and the outward-turned edge (49) is clamped with the front end of the fixed seat (45). The tail cover (42) is provided with a gripping part (411).

2. The assembly structure of the impurity collection box for the vaporization chamber of the steam electric iron according to claim 1, Characterized in that: The channel (13) is surrounded by longitudinal ribs (14) provided on the wall of the round hole, and the locking groove (12) is surrounded by longitudinal ribs and circumferential ribs (15) provided on the wall of the round hole.

3. The assembly structure of the impurity collection box for the vaporization chamber of the steam electric iron according to claim 2, Characterized in that: The circumferential rib (15) is annular and has a notch corresponding to the channel (13), and the longitudinal rib (14) is located in front of the circumferential rib.

4. The assembly structure of the impurity collection box for the vaporization chamber of the steam electric iron according to claim 1, Characterized in that: On the wall (18) of the round hole, there are limit ribs (16) that limit the locking block (44) within the range corresponding to the locking groove and the channel.

5. The assembly structure of the impurity collection box for the vaporization chamber of the steam electric iron according to claim 1, Characterized in that: The locking spring (43) is a helical compression spring supported at both ends on the fixed seat (45) and the end cap (42).

6. The assembly structure of the impurity collection box of the steam electric iron vaporization cavity according to claim 1, characterized in that: A sealing ring (410) contacting the inner wall of the conduit is formed at the front end of the scale collection box (41).

Images