Anti-pinch mechanism of magnetic window cleaner

Abstract

The utility model discloses an anti-pinch mechanism of magnetic window cleaner, including the first window cleaning body, the first window cleaning body is equipped with safety post, first elastic piece, limit arm, second elastic piece and operating portion, safety post can move between extension position and retraction position, safety post has the trend of moving towards the extension position under the action of first elastic piece, the limit arm is equipped with the second elastic piece, and the operating portion is equipped with the second elastic piece. The safety column is internally provided with a limiting groove and an avoiding channel which is located beside the limiting groove and extends in the telescopic direction of the safety column, the limiting arm can reciprocate between a first position and a second position in the first window cleaning body, and the limiting arm can be driven to move towards the first position through the operation part. The limiting arm tends to move towards the second position under the action of the second elastic piece, the limiting arm is provided with a limiting part capable of moving in the limiting groove and the avoiding channel in a reciprocating mode, limiting of the safety column is more stable, the safety column is not prone to being damaged, in addition, after the first window cleaning body is used, the safety column can be rapidly locked in the extending state, and the safety column is not prone to being damaged. Therefore, the problem of hand clamping is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning tools, in particular to a hand-pinching prevention mechanism of a magnetic window cleaner. Background Art

[0002] The window cleaner comprises a first window cleaner and a second window cleaner which can be attracted to each other across the glass. The first window cleaner and the second window cleaner are respectively provided with magnetic components. The magnetic components have strong suction force, so the first window cleaner and the second window cleaner are easy to pinch hands.

[0003] To this end, technicians have designed an adjustable magnetic window wiper with an anti-pinch mechanism, see Chinese patent (CN209826540U), which includes a first window wiper body and a second window wiper body with two magnetic forces counteracting each other. The wiping surface of the first window wiper body is provided with four retractable safety columns, and each safety column is provided with a spring; every two safety columns form a group and are fixed by a crossbeam, and each crossbeam is provided with a swinging drive rod; the free end of each drive rod can be moved to the back of the crossbeam and counteract each other; the ends are respectively engaged with both sides of the same gear, and the two drive rods move synchronously towards each other when the gear rotates forward or reversely; it also includes a shift rod and a connecting plate, the shift rod is fixed to the connecting plate, and the connecting plate is provided with a spur rack for driving the gear to rotate.

[0004] However, the above-mentioned window cleaner adopts a gear rack transmission method to drive the driving rod to swing, so as to limit the safety column, which has poor stability and is easy to be damaged. Specifically, the gear rack linkage structure is complicated and prone to wear. In addition, when it falls or collides and vibrates, it will also cause damage to the gear rack linkage structure, or cause the driving rod to directly lose connection or jump off (that is, the driving rod and the gear are disengaged). In addition, such a long linkage itself is unstable. In addition, after the first window cleaner is used, the driving rod needs to be manually reset to limit the safety column to the extended state. If the user forgets to reset the driving rod, the safety column is in a retractable state, which can easily cause fingers to be pinched. Summary of the invention

[0005] The purpose of the utility model is to provide a finger-pinching prevention mechanism for a magnetic window cleaner. Compared with the prior art, the position limiting mechanism of the safety column of the utility model is more stable and less prone to damage. In addition, after the first window cleaner is used (after being removed from the glass window), the safety column is quickly locked in an extended state under the action of the first elastic member and the second elastic member, thereby effectively solving the finger-pinching problem.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions: a hand-pinching prevention mechanism of a magnetic window wiper, comprising a first window-wiping body, the first window-wiping body is provided with a safety column and a first elastic member, the safety column can move between an extended position and a retracted position relative to the first window-wiping body, the safety column has a tendency to move toward the extended position under the action of the first elastic member, a limiting groove and an avoidance channel located beside the limiting groove and extending along the extension direction of the safety column are provided in the safety column, the first window-wiping body is also provided with a limiting arm, a second elastic member and an operating part, the limiting arm can reciprocate between a first position and a second position in the first window-wiping body relative to the first window-wiping body, the limiting arm can be driven to move toward the first position by the operating part, the limiting arm has a tendency to move toward the second position under the action of the second elastic member, and the limiting arm is provided with a limiting part that can reciprocate in the limiting groove and the avoidance channel;

[0007] When the limiting arm is driven to move to the first position by the operating part, the limiting part moves from the limiting groove to the avoidance channel. At this time, the safety column is in an unlocked state, and the safety column can move to the retracted position under the action of external pressure; when the safety column is in the extended position, the force applied to the operating part is cancelled, and the limiting arm is reset under the action of the second elastic member, so that the limiting part moves from the avoidance channel to the limiting groove and cooperates with the limiting groove, thereby locking the safety column in the extended position.

[0008] Furthermore, the limit groove is arranged on the side of the avoidance channel facing the operating part, the limit groove is connected to the inner side of the avoidance channel, the limit groove and the avoidance channel cooperate to form an "L" shape, and the limit groove is provided with a limit step that cooperates with the limit part.

[0009] Furthermore, the safety posts are provided in two groups and are symmetrically arranged on both sides of the first window wiping body, the limiting arms are provided with limiting portions corresponding to the safety posts one by one, and the upper ends of the two groups of safety posts are respectively provided with first elastic members.

[0010] Furthermore, a limiting column for limiting the limiting arm is provided in the first window-wiping body, and the limiting arm moved to the first position is limited by the limiting column.

[0011] Furthermore, second elastic members are respectively provided on both sides of the limiting arm, abutment portions for abutting the second elastic members are provided in the first window wiping body, and guide posts for guiding the second elastic members are provided on the abutment portions and / or the limiting arm.

[0012] Furthermore, the first wiping window is provided with a frame portion extending along the extension direction of the safety column at a position corresponding to the safety column, the frame portion is located inside the first wiping window, and a guide groove cooperating with the guide of the safety column is provided inside the frame portion.

[0013] Furthermore, two groups of first elastic members are respectively provided at both ends of each of the safety posts, and accommodating grooves for accommodating part of the first elastic members are provided on the safety posts and / or the first wiper window body.

[0014] Furthermore, the operating part is a push button, and the push button is connected to the limiting arm through a connecting part. The first wiper window body is provided with a push button groove and an avoidance groove for movement of the connecting part.

[0015] Furthermore, the safety column is restricted from being separated from the first wiping window by the avoiding passage and the inner end surface of the limiting groove cooperating with the limiting portion.

[0016] Furthermore, it also includes a second window wiping body that is magnetically matched with the first window wiping body, and the safety column of the first window wiping body is locked in the extended position so that a space is left between the first window wiping body and the second window wiping body.

[0017] In summary, the utility model has the following beneficial effects:

[0018] Compared with the prior art, the anti-pinch mechanism of the magnetic window cleaner of the utility model is more stable and less prone to damage in limiting the safety column. In addition, after the first window cleaner is used (after being removed from the glass window), the safety column is quickly locked in the extended state under the action of the first elastic member and the second elastic member, thereby effectively solving the problem of pinching the hand. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of a first wiping window and a second wiping window of the utility model.

[0020] Figure 2 It is a schematic diagram of the internal structure of the first window cleaning body of the utility model.

[0021] Figure 3 It is a structural schematic diagram of the safety column of the utility model.

[0022] Figure 4 It is a structural schematic diagram when the limiting part of the utility model is located in the locking groove.

[0023] Figure 5 It is a structural schematic diagram of the second elastic member of the utility model.

[0024] Figure 6 It is a cross-sectional view of the utility model.

[0025] In the figure: 10, the first window wiping body; 11, the limiting column; 12, the frame part; 13, the abutting part; 14, the push button; 15, the push button groove; 16, the limiting rib; 20, the safety column; 21, the limiting groove; 211, the limiting step; 22, the avoidance passage; 30, the first elastic member; 40, the limiting arm; 41, the limiting part; 50, the second elastic member; 60, the operating part; 70, the second window wiping body. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the accompanying drawings.

[0027] like Figure 1-6 As shown, a hand-pinch prevention mechanism of a magnetic window wiper comprises a first window-wiping body 10, wherein the first window-wiping body 10 is provided with a safety column 20 and a first elastic member 30, wherein the safety column 20 can move between an extended position and a retracted position relative to the first window-wiping body 10, and the safety column 20 has a tendency to move toward the extended position under the action of the first elastic member 30, wherein a limiting groove 21 and an avoidance channel 22 located beside the limiting groove 21 and extending along the extension direction of the safety column 20 are provided in the safety column 20, and the first window-wiping body 10 is further provided with a limiting arm 40, a second elastic member 50 and an operating member 51. The operating part 60, the limit arm 40 can reciprocate between the first position and the second position in the first wiping window body 10 relative to the first wiping window body 10, the limit arm 40 can be driven to move toward the first position through the operating part 60, and the limit arm 40 has a tendency to move toward the second position under the action of the second elastic member 50, and the limit arm 40 is provided with a limit part 41 that can reciprocate in the limit groove 21 and the avoidance channel 22, and the avoidance channel 22 and the inner end surface of the limit groove 21 cooperate with the limit part 41 to limit the safety column 20 from being separated from the first wiping window body 10.

[0028] When the limiting arm 40 is driven to move to the first position through the operating part 60, the limiting part 41 moves from the limiting groove 21 to the avoidance channel 22. At this time, the safety column 20 is in an unlocked state. The safety column 20 can move to the retracted position under the action of external pressure. Specifically, when the safety column 20 is in the unlocked state, the first window wiping body 10 and the second window wiping body 70 can start working. For example, the first window wiping body 10 is placed on the inner side of the glass window, and the second window wiping body 70 is placed on the outer side of the glass window. The first window wiping body 10 and the second window wiping body 70 are attracted to both sides of the glass window through the internal magnetic suction component. The outer end face of the safety column 20 is retracted into the first window wiping body 10 due to the pressure of the glass window.

[0029] After the first window wiping body 10 and the second window wiping body 70 complete the window wiping work, they are removed. At this time, the pressure on the outer end surface of the safety column 20 disappears, and the safety column 20 moves to the extended position under the elastic force of the first elastic member 30. When the safety column 20 is in the extended position, if the force applied to the operating part 60 is cancelled, the limiting arm 40 is reset under the action of the second elastic member 50, so that the limiting part 41 moves from the avoidance channel 22 to the limiting groove 21 and cooperates with the limiting groove 21, thereby locking the safety column 20 in the extended position.

[0030] When the safety column 20 is in the retracted position, the outer end surface of the safety column 20 is flush with the window wiping surface of the first wiping window body 10. When the safety column 20 is in the extended position, the outer end surface of the safety column 20 protrudes from the window wiping surface of the first wiping window body 10, thereby leaving space to avoid pinching hands when the first wiping window body 10 and the second wiping window body 70 are attracted.

[0031] The limiting groove 21 is arranged on the side of the avoidance channel 22 facing the operating part 60, and the limiting groove 21 is connected to the inner side of the avoidance channel 22. The limiting groove 21 and the avoidance channel 22 cooperate to form an "L" shape. The limiting groove 21 is provided with a limiting step 211 that cooperates with the limiting part 41. That is, when the limiting arm 40 is in the second position, the limiting part 41 is in the limiting groove 21. At this time, the limiting part 41 cooperates with the limiting step 211 to lock the safety column 20 in the extended position.

[0032] The safety posts 20 are provided in two groups and are symmetrically arranged on both sides of the first wiping window 10, the limiting arms 40 are provided with limiting parts 41 corresponding to the safety posts 20, and the upper ends of the two groups of safety posts 20 are respectively provided with first elastic members 30. The safety posts 20 of the utility model are similar to a gourd-shaped structure, and through the design of the shape of the safety posts 20, they have a good pressure bearing capacity. When the first wiping window 10 and the second wiping window 70 are in the suction state, the safety posts 20 can separate the first wiping window 10 and the second wiping window 70 more stably.

[0033] A limiting column 11 for limiting the limiting arm 40 is provided in the first wipe window body 10, and the limiting arm 40 moved to the first position is limited by the limiting column 11. In the utility model, an arc-shaped groove is provided on the side of the limiting arm 40 corresponding to the limiting column 11, and the limiting column 11 and the groove surface of the arc-shaped groove are limited to limit the limiting arm 40 located at the first position to prevent it from continuing to move away from the second position, thereby causing the safety column 20 and the inner limiting portion 41 located at the safety column 20 to be damaged by excessive pressure.

[0034] Second elastic members 50 are respectively provided on both sides of the limit arm 40. By providing two groups of second elastic members 50, the limit arm 40 can be driven to reset more smoothly and quickly. An abutment portion 13 for abutting the second elastic member 50 is provided in the first window wiping body 10, and a guide column for guiding the second elastic member 50 is provided on the abutment portion 13 and / or the limit arm 40.

[0035] In the utility model, the first window wiping body 10 includes a lower shell and an upper shell detachably mounted on the lower shell, a cavity is formed in the upper shell and the lower shell, the safety column 20, the first elastic member 30, the limiting arm 40, and the second elastic member 50 are accommodated in the cavity, and the abutment portion 13 is fixedly connected to the upper shell.

[0036] The position of the first wiping window 10 corresponding to the safety column 20 is provided with a frame portion 12 extending along the telescopic direction of the safety column 20. The frame portion 12 is located in the first wiping window 10, and a guide groove cooperating with the safety column 20 is provided in the frame portion 12. The frame portion 12 is integrally formed in the first wiping window 10. The setting of the frame portion 12 can guide and limit the safety portion to prevent displacement and jamming during its reciprocating telescopic process.

[0037] Two groups of first elastic members 30 are respectively provided at both ends of each of the safety columns 20. The safety columns 20 and / or the first window wiping body 10 are provided with receiving grooves for receiving part of the first elastic members 30. The provision of the receiving grooves prevents the first elastic members 30 from shifting during compression and resetting.

[0038] The operating part 60 is a push button 14, and the push button 14 is connected to the limiting arm 40 through a connecting part. The first window cleaning body 10 is provided with a push button 14 groove and an avoidance groove for the connecting part to move.

[0039] A limiting rib 16 is formed in the upper shell of the first window body 10, and the limiting arm 40 is limited in the vertical direction by the limiting rib 16, that is, the upper end of the limiting arm 40 is limited to prevent it from falling out of the safety column 20, and the lower end position of the limiting arm 40 can be limited by a limiting step 211 or the upper end surface of the frame body 12.

[0040] The magnetic window cleaner of the present invention further comprises a second window cleaner 70 magnetically matched with the first window cleaner 10 , and a space is left between the first window cleaner 10 and the second window cleaner 70 by locking the safety column 20 of the first window cleaner 10 in the extended position.

[0041] In summary, the utility model has the following beneficial effects:

[0042] Compared with the prior art, the anti-pinch mechanism of the magnetic window cleaner of the utility model is more stable and less prone to damage in limiting the safety column 20. In addition, after the first window cleaning body 10 is used (after being removed from the glass window), under the action of the first elastic member 30 and the second elastic member 50, the safety column 20 is quickly locked in the extended state, thereby effectively solving the problem of pinching the hand.

[0043] The above description is only a preferred embodiment of the present utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A hand-pinch prevention mechanism of a magnetic window cleaner, comprising a first window cleaner (10), the first window cleaner (10) being provided with a safety column (20) and a first elastic member (30), the safety column (20) being movable between an extended position and a retracted position relative to the first window cleaner (10), the safety column (20) having a tendency to move toward the extended position under the action of the first elastic member (30), characterized in that: A limit groove (21) and an avoidance channel (22) located beside the limit groove (21) and extending along the extension and contraction direction of the safety column (20) are provided in the safety column (20); the first window wiping body (10) is also provided with a limit arm (40), a second elastic member (50) and an operating portion (60); the limit arm (40) can reciprocate between a first position and a second position in the first window wiping body (10) relative to the first window wiping body (10); the limit arm (40) can be driven to move toward the first position by the operating portion (60); the limit arm (40) has a tendency to move toward the second position under the action of the second elastic member (50); the limit arm (40) is provided with a limit portion (41) that can reciprocate in the limit groove (21) and the avoidance channel (22); When the limiting arm (40) is driven to move to the first position by the operating part (60), the limiting part (41) moves from the limiting groove (21) into the avoidance channel (22), and the safety column (20) is in an unlocked state at this time. The safety column (20) can move toward the retracted position under the action of external pressure; when the safety column (20) is in the extended position, the force applied to the operating part (60) is cancelled, and the limiting arm (40) is reset under the action of the second elastic member (50), so that the limiting part (41) moves from the avoidance channel (22) into the limiting groove (21) and cooperates with the limiting groove (21) to lock the safety column (20) in the extended position.

2. The anti-pinch mechanism of a magnetic window cleaner according to claim 1, characterized in that: The limiting groove (21) is arranged on a side of the avoidance channel (22) facing the operating portion (60), the limiting groove (21) is communicated with the inner side of the avoidance channel (22), the limiting groove (21) and the avoidance channel (22) cooperate to form an "L" shape, and the limiting groove (21) is provided with a limiting step (211) that cooperates with the limiting portion (41) to limit.

3. The anti-pinch mechanism of a magnetic window cleaner according to claim 1, characterized in that: The safety columns (20) are provided in two groups and are symmetrically arranged on both sides of the first window cleaning body (10); the limiting arms (40) are provided with limiting portions (41) corresponding one to one with the safety columns (20); and the upper ends of the two groups of safety columns (20) are respectively provided with first elastic members (30).

4. The anti-pinch mechanism of a magnetic window cleaner according to claim 3, characterized in that: A limiting column (11) for limiting the position of the limiting arm (40) is provided in the first wiper window body (10), and the limiting arm (40) moved to the first position is limited by the limiting column (11).

5. The anti-pinch mechanism of a magnetic window cleaner according to claim 3, characterized in that: Second elastic members (50) are respectively provided on both sides of the limiting arm (40); a contact portion (13) for contacting the second elastic member (50) is provided in the first window wiping body (10); and a guide column for guiding the second elastic member (50) is provided on the contact portion (13) and / or the limiting arm (40).

6. The anti-pinch mechanism of a magnetic window cleaner according to claim 3, characterized in that: A frame portion (12) extending along the telescopic direction of the safety column (20) is provided at a position of the first wiping window (10) corresponding to the safety column (20); the frame portion (12) is located inside the first wiping window (10); and a guide groove is provided inside the frame portion (12) to cooperate with the safety column (20) for guiding.

7. The anti-pinch mechanism of a magnetic window cleaner according to claim 3, characterized in that: Two groups of first elastic members (30) are respectively provided at both ends of each safety column (20), and a receiving groove for receiving part of the first elastic member (30) is provided on the safety column (20) or / and the first window cleaning body (10).

8. The anti-pinch mechanism of a magnetic window cleaner according to claim 1, characterized in that: The operating part (60) is a push button (14), and the push button (14) is connected to the limiting arm (40) through a connecting part. The first window cleaning body (10) is provided with a push button groove (15) and an avoidance groove for movement of the connecting part.

9. The anti-pinch mechanism of a magnetic window cleaner according to claim 1, characterized in that: The safety column (20) is restricted from being separated from the first window wiping body (10) by means of the avoiding passage (22) and the inner end surface of the limiting groove (21) and the limiting portion (41).

10. The anti-pinch mechanism of a magnetic window cleaner according to any one of claims 1 to 9, characterized in that: It also includes a second window wiping body (70) magnetically matched with the first window wiping body (10), and a space is left between the first window wiping body (10) and the second window wiping body (70) by locking the safety column (20) of the first window wiping body (10) in an extended position.

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