Window cleaner capable of preventing hands from being pinched

Abstract

The utility model belongs to the technical field of window wipers, and particularly relates to an anti-pinch window wiper. An anti-pinch window cleaner comprises a first cleaner body and a second cleaner body, a safety column is arranged on the end face of one side of the first cleaner body, a handle which extends in the axial direction to be grabbed by a user is arranged on the end face of the other side of the first cleaner body, a button is arranged at the axis position of the handle, the button is connected with a movable rod which extends into the first cleaner body and can move in the axial direction, and the movable rod is connected with the safety column. Linkage rods are arranged on the two sides of the end of the movable rod in a matched mode, each linkage rod is provided with a first elastic piece in a matched mode, and the linkage rods move close to the movable rod under the action of the first elastic pieces so that the ends of the linkage rods can make contact with the safety columns to limit the safety columns to stretch out or retract back; and when the button is pressed, the end part of the movable rod extrudes the linkage rod and moves to deviate from the end part of the movable rod, so that the end part of the linkage rod is not in contact with the safety column, and the safety column can stretch out and draw back freely. The utility model has the advantage that a user can conveniently press the button to control the extension and retraction of the safety column.

Description

Technical Field

[0001] The utility model belongs to the technical field of window cleaners, and in particular relates to a hand-pinching prevention window cleaner. Background Art

[0002] A window cleaner, also known as a glass cleaner, consists of two magnetic wipers attached to the inside and outside of the glass. Moving the inner wiper moves the outer wiper. Because the magnetic attraction between the two wipers is strong, a safety post is typically placed between them to prevent them from pinching your hand when not in use.

[0003] For example, the Chinese patent application number 202123323045.7 discloses a double-sided glass wiper with an anti-pinch function. When using this patent, the user needs to press the buttons on the left and right sides (driving switches) with two fingers at the same time, and then needs to hold the protruding part of the first wiper with the entire palm, and press the first wiper on the glass, so that the safety column retracts and then releases the button (driving switch). When in use, because the palm is in an open state, the user not only needs to take into account the two fingers pressing the button, but also ensure that the palm holds the entire first wiper, which is not conducive to the user's force application and causes some troubles in use. Summary of the Invention

[0004] The utility model aims to provide a hand-pinch-proof window cleaning device which is convenient for a user to press a button to control the extension and retraction of a safety column and to firmly hold the entire cleaning body.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical solution: an anti-pinch window wiper, comprising a first wiping body and a second wiping body that are magnetically attracted to each other, one end face of the first wiping body is provided with an elastically retractable safety column, and the other end face of the first wiping body is provided with an axially extending handle for the user to grasp, a button is provided at the axis of the handle, the button is connected to a movable rod that extends into the interior of the first wiping body and can move along the axial direction, the two sides of the end of the movable rod are matched with linkage rods, the linkage rod is matched with a first elastic member, and the linkage rod moves close to the movable rod under the action of the first elastic member so that its end can contact the safety column to limit the extension or retraction of the safety column; when the button is pressed, the end of the movable rod squeezes the linkage rod and moves away from the end of the movable rod, so that the end of the linkage rod does not contact the safety column, so that the safety column can freely retract and retract.

[0006] When using this solution, the user can directly grasp the entire handle with one hand. When the safety post needs to be retracted, the user can use their thumb to press the button, causing the end of the movable rod to squeeze the linkage rod and move away from the end of the movable rod, so that the end of the linkage rod does not contact the safety post. At this time, the safety post can freely extend and retract. The user can press the entire first wiper on the glass to retract the safety post. At the same time, the user can place the second wiper on the outside of the glass with the other hand so that the first wiper and the second wiper are magnetically attracted to each other on both sides of the glass. After the safety post retracts, the user's thumb releases the button, causing the linkage rod to move closer to the movable rod under the action of the first elastic member. At the same time, the end of the linkage rod will contact the safety post, thereby limiting the extension of the safety post and keeping the safety post in a retracted state. At this time, the user can continue to hold the handle to clean and wipe the glass. When the glass is wiped, the first wiper can be pulled off the glass, and then the button can be pressed with the thumb so that the end of the linkage rod is no longer in contact with the safety column, and the safety column pops out automatically. Then, the button can be released, and the end of the linkage rod will contact the safety column to limit the retraction of the safety column. At this time, the first wiper and the second wiper can be magnetically attracted together without pinching the user's hand.

[0007] The elastically retractable safety column may be any one of the existing safety columns that uses a spring to enable the safety column to pop out and is used for a window cleaner.

[0008] The end of the linkage rod may limit the extension and retraction of the safety column by pressing against the safety column so that the safety column cannot be extended or by causing a large friction force so that the safety column cannot be extended or retracted.

[0009] This solution provides a handle with a button at its axis, allowing the user to control the extension and retraction of the safety column by directly pressing with their thumb while holding the handle. Gripping the handle provides a firm grip, which is more stable than dragging a document, allowing for better force application and facilitating pressing.

[0010] Preferably, a sliding groove extending from the movable rod side to the safety column side is provided in the first wiping body, and the linkage rod is slidably fitted in the sliding groove.

[0011] By providing the sliding groove, the sliding track of the linkage rod can be limited, thereby preventing the linkage rod from deflecting.

[0012] Preferably, the linkage rod is provided with a mating groove extending along its length and opening downward, the mating groove is provided with the first elastic member, the bottom of the slide groove is provided with a stop block extending into the mating groove, one end of the first elastic member abuts against the stop block, and the other end of the first elastic member abuts against the groove wall of the mating groove.

[0013] The first elastic member is restricted by providing a matching groove, so that the telescopic trajectory of the first elastic member is stable; when the linkage rod moves away from the movable rod end, the stop block can press against the first elastic member, causing the first elastic member to contract.

[0014] Preferably, a limit plate is commonly connected between two adjacent safety columns, and the limit plate is located at the upper end of the linkage rod. The end of the linkage rod is provided with an axially extending limit piece. When the safety column retracts, the limit piece contacts the limit plate to limit the extension of the safety column; a laterally opening limit groove is provided between the limit piece and the linkage rod; when the safety column is extended, the limit plate can be snapped into the limit groove to limit the retraction of the safety column.

[0015] When the safety column retracts, the limiting piece will contact the limiting plate to press the limiting plate, so that the limiting plate cannot move and the safety column cannot be extended; when the safety column is extended, the linkage rod moves toward the end side of the linkage rod under the action of the first elastic piece, so that the limiting piece can be stuck into the limiting groove to limit the retraction of the safety column.

[0016] Preferably, the limiting plate is provided with an arc-shaped groove opening toward the limiting groove side, and the circumferential outer wall of the limiting member and the circumferential inner wall of the limiting groove are both arc surfaces adapted to the groove wall of the arc-shaped groove.

[0017] By arranging an arc groove on the limiting plate, and the groove wall of the arc groove can contact and cooperate with the groove wall of the limiting groove and the outer wall of the limiting member, the cooperation effect between the two can be further enhanced.

[0018] Preferably, a conical piece is provided at the end of the movable rod, the diameter of the conical piece gradually increases from bottom to top, and an end of the linkage rod close to the conical piece is provided with a slope adapted to the circumferential outer wall of the conical piece.

[0019] The cooperation between the tapered part and the inclined surface can make the movement of the linkage part more convenient.

[0020] Preferably, an axially extending guide member is provided inside the first wiper, the conical member is provided with a guide hole for inserting the guide member, the guide hole is connected to a radially extending anti-rotation groove, and the guide member is provided with an anti-rotation protrusion extending into the anti-rotation groove.

[0021] The cooperation between the guide member and the guide hole prevents the tapered member from being deflected, and the provision of the anti-rotation groove and the anti-rotation protrusion extending into the anti-rotation groove prevents the button and the movable rod from rotating.

[0022] Preferably, an axially extending guide rod is provided inside the first wiper, the safety column is provided with a placement hole opening to the guide rod side, the guide rod outer sleeve is provided with a second elastic member, the second elastic member extends into the placement hole, and the safety column has a tendency to extend to the outside of the first wiper under the action of the second elastic member.

[0023] The elastic expansion and contraction of the safety column is achieved through the second elastic member, and the spring is guided by the guide rod.

[0024] Preferably, the end of the handle is rotatably connected to a knob, and the knob is connected to a screw extending into the inside of the first wiper. A frame for fixing the magnet is provided in the first wiper, and the screw is threadedly engaged with the frame; the screw is provided with an axial through-hole, and the movable rod passes through the through-hole, and the movable rod and the screw can rotate relative to each other; the lower end of the frame is provided with a downwardly opening cavity, and the linkage rod is slidably arranged in the cavity.

[0025] A knob is provided at the end of the handle, and the user can control the rotation of the screw by turning the knob. The rotation of the screw realizes the lifting and lowering of the frame along the axial direction of the screw, thereby controlling the position of the magnet, thereby controlling the magnetic attraction force between the first rubbing body and the second rubbing body; at the same time, the movable rod is arranged inside the screw, so that the movable rod and the screw are coaxially arranged, and the structure is more compact. The user can adjust the magnetic attraction force and control the extension and retraction of the safety column on one handle; at the same time, the frame is also provided with a cavity, which covers the linkage rod, further making the structure of the device more compact.

[0026] Preferably, an axially open groove is provided at the center of the knob, the button is provided in the groove, the button and the groove can rotate relative to each other, a third elastic member is provided between the button and the bottom of the groove, and the button and the movable rod are reset under the action of the third elastic member.

[0027] The groove prevents the button from being located outside, and the third elastic member can be provided to reset the movable rod, so that the button can be reset and rebound after being pressed.

[0028] The utility model has the advantages that the user can conveniently press the button to control the extension and retraction of the safety column and firmly hold the entire wiping body. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural diagram of the present utility model.

[0030] Figure 2 Schematic diagram of the structure of the first wiping body.

[0031] Figure 3 for Figure 2 sectional view of .

[0032] Figure 4 Schematic diagram of the internal structure of the first wiping body.

[0033] Figure 5 This is a cross-sectional view of the safety column.

[0034] Figure 6 It is a structural diagram of the movable rod, linkage rod and safety column.

[0035] Figure 7 It is a structural diagram of the linkage rod and safety column inside the first wiping body.

[0036] Figure 8 It is a structural diagram of the linkage rod and safety column inside the first wiping body.

[0037] Figure 9 This is a bottom view of the linkage rod and safety column inside the first wiper.

[0038] Figure numbers: 1. First wiper; 11. Handle; 12. Safety column; 13. Safety hole; 14. Guide member; 141. Anti-rotation protrusion; 15. Magnetic block; 16. Stop block; 17. Slide groove; 18. Limit rod; 121. Guide rod; 122. Placement hole; 123. Limit plate; 1231. Arc groove; 2. Second wiper; 3. Button; 31. Movable rod; 32. Third elastic member; 33. Conical member; 331. Anti-rotation groove; 4. Knob; 41. Screw; 5. Linkage rod; 51. First elastic member; 52. Limit member; 521. Limit groove; 6. Frame; 61. Connecting member; 7. Partition. DETAILED DESCRIPTION

[0039] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0040] like Figure 1 and Figure 2 As shown, this embodiment discloses a finger-pinch prevention window wiper, comprising a first wiper 1 and a second wiper 2 that are magnetically attracted to each other, with a partition 7 interposed between the first wiper 1 and the second wiper 2. The first wiper 1 is provided with an axially extending handle 11 for the user to grasp. The first wiper 1 acts on the inside of the glass, and the user can grasp the handle 11 to move the first wiper 1, while the second wiper 2 acts on the outside of the glass. Four safety holes 13 extending through the first wiper 1 are provided on the end surface facing the second wiper 2. Safety posts 12 are telescopically disposed in the safety holes 13. When extended, the safety posts 12 abut the second wiper 2, creating a gap between the first wiper 1 and the second wiper 2 to prevent the user's hand from being pinched.

[0041] like Figures 3 to 9As shown, a button 3 is provided at the axis of the handle 11. The button 3 is equipped with a movable rod 31 that extends into the first wiper 1. The movable rod 31 extends axially and is fixedly connected to the button 3 and the movable rod 31 by screws (not shown). The lower end of the movable rod 31 is provided with a tapered member 33, the diameter of which gradually increases from bottom to top. An axially extending guide member 14 is provided at the bottom of the first wiper 1. The tapered member 33 has a guide hole (not shown) for the guide member 14 to be inserted. The guide hole is connected to an anti-rotation groove 331, which extends radially. The guide member 14 is provided with an anti-rotation protrusion 141 that extends into the anti-rotation groove 331.

[0042] Linkage rods 5 are located on either side of the conical member 33, extending toward the safety post 12. The ends of the linkage rods 5 near the conical member 33 are equipped with inclined surfaces that mate with the conical member 33. Pressing the button 3, which lowers the conical member 33, compresses the linkage rods 5 to the left and right. A chute 17 is located within the first wiper 1 to limit the movement of the linkage rods 5. A stop 16 is located at the bottom of the chute 17. The linkage rods 5 have a downwardly opening mating groove extending along their length. A first elastic member 51 is located within the mating groove. One end of the first elastic member 51 abuts the stop 16, while the other end abuts the wall of the mating groove. When the button 3 is released, the conical member 33 ascends, and the linkage rods 5 on either side, driven by the first elastic member 51, move toward the conical member 33.

[0043] A limit plate 123 is commonly connected between two adjacent safety posts 12 on the same side. The limit plate 123 is located at the upper end of the linkage rod 5. An axially extending limit member 52 is provided at the end of the linkage rod 5 that deviates from the conical member 33. A laterally opening limit groove 521 is provided between the limit member 52 and the linkage rod 5. The limit plate 123 is provided with an arcuate groove 1231 that opens toward the limit groove. The circumferential outer wall of the limit member 52 and the circumferential inner wall of the limit groove 521 are both arcuate surfaces that match the groove wall of the arcuate groove 1231. When the safety post 12 extends, the arcuate groove 1231 of the limit plate 123 can be snapped into the limit groove 521 to limit the retraction of the safety post 12. When the safety post 12 retracts, the outer wall of the limit member 52 contacts the arcuate groove 1231 and presses the limit plate 123 to limit the extension of the safety post 12.

[0044] A guide rod 121 extending axially downward is provided inside the first wiping body 1, and the safety column 12 is provided with a placement hole 122 opening to the side of the guide rod 121. A second elastic member (not shown) is provided on the outer sleeve of the guide rod 121, and the second elastic member extends into the placement hole 122. Under the action of the second elastic member, the safety column 12 has a tendency to extend to the outside of the first wiping body 1.

[0045] like Figure 3 、 Figure 4 、 Figure 7 and Figure 8As shown, a frame 6 is provided within the first wiper 1 to hold the magnets 15. The first wiper 1 passes through a limiting rod 18 of the frame 6. The frame 6 is cross-shaped and has four magnets 15 fixed around its periphery. The upper end of the frame 6 includes a screw-fastened connector 61, which has an axially open internal threaded hole. The end of the handle 11 is rotatably connected to a knob 4, which is connected to a screw 41 that extends into the interior of the first wiper 1. The screw 41 is threadedly engaged with the connector 61. When the knob 4 is rotated, the screw 41 rotates, causing the frame 6 to raise and lower the magnets 15. The center of the knob 4 has an axially open groove, within which a button 3 is located. The button 3 and the groove are rotatable relative to each other. A third elastic member 32 is provided between the button 3 and the bottom of the groove. The button 3 and the movable rod 31 are reset under the action of the third elastic member 32. The screw 41 has an axially extending through-hole, and the movable rod 31 is movably disposed within the through-hole of the screw 41.

[0046] During use, the user grasps the entire handle 11 and presses the button 3 with their thumb, causing the tapered member 33 to descend and squeeze the linkage rods 5 on either side. The linkage rods 5 move left and right, allowing the stopper 52 to move away from the stop plate 123 of the safety post 12, allowing the safety post 12 to freely extend and retract. The user then presses the first wiper 1 against the glass, causing the safety post 12 to retract. The user then releases the button 3, allowing the linkage rod 5 to return to its original position under the action of the first elastic member 51, allowing the stopper 52 to press against the stop plate 123, preventing the safety post 12 from extending. The user then places the second wiper 2 on the outside of the glass, allowing the first and second wipers 1 and 2 to magnetically attract each other. The glass can now be cleaned. During this magnetic attraction, the user can turn the knob 4 to control the magnetic attraction. After cleaning the glass, the user presses the button 3 again, causing the linkage rod 5 to move left and right again, freeing the stopper 52 from pressing against the stop plate 123, allowing the safety post 12 to freely extend and retract. The safety post 12 then pops out under the action of the second elastic member. The user releases the button 3, and the linkage rod 5 is reset, so that the limiting groove 521 blocks the limiting plate 123, and the safety column 12 cannot be retracted. At this time, the first wiping body 1 and the second wiping body 2 can be put together to avoid pinching the hand.

Claims

1. A finger-pinch prevention window wiper, comprising a first wiper and a second wiper that are magnetically attracted to each other, wherein one end surface of the first wiper is provided with an elastically retractable safety post, characterized in that: The other side end face of the first wiping body is provided with a handle extending axially for the user to grasp, and a button is provided at the axis center of the handle, and the button is connected to a movable rod that extends into the interior of the first wiping body and can move along the axial direction, and linkage rods are matched on both sides of the end of the movable rod, and the linkage rod is matched with a first elastic member. Under the action of the first elastic member, the linkage rod moves close to the movable rod so that its end can contact the safety column to limit the extension or retraction of the safety column; when the button is pressed, the end of the movable rod squeezes the linkage rod and moves away from the end of the movable rod, so that the end of the linkage rod does not contact the safety column, so that the safety column can freely extend and retract.

2. The anti-pinch window cleaner according to claim 1, characterized in that: A sliding groove extending from the movable rod side to the safety column side is provided in the first wiping body, and the linkage rod is slidably fitted in the sliding groove.

3. The anti-pinch window cleaner according to claim 2, characterized in that: The linkage rod is provided with a matching groove extending along its length direction and opening downward, the matching groove is provided with the first elastic member, the bottom of the slide groove is provided with a stop block extending into the matching groove, one end of the first elastic member abuts against the stop block, and the other end of the first elastic member abuts against the groove wall of the matching groove.

4. The anti-pinch window cleaner according to claim 1, characterized in that: A limit plate is commonly connected between two adjacent safety posts, and the limit plate is located at the upper end of the linkage rod. The end of the linkage rod is provided with an axially extending limit piece. When the safety post retracts, the limit piece contacts the limit plate to limit the extension of the safety post; a laterally opening limit groove is provided between the limit piece and the linkage rod; when the safety post extends, the limit plate can be snapped into the limit groove to limit the retraction of the safety post.

5. The anti-pinch window cleaner according to claim 4, characterized in that: The limiting plate is provided with an arc-shaped groove opening toward the limiting groove side, and the circumferential outer wall of the limiting member and the circumferential inner wall of the limiting groove are both arc surfaces adapted to the groove wall of the arc-shaped groove.

6. The anti-pinch window cleaner according to claim 1, characterized in that: A conical piece is provided at the end of the movable rod, the diameter of which increases gradually from bottom to top, and an end of the linkage rod close to the conical piece is provided with an inclined surface adapted to the circumferential outer wall of the conical piece.

7. The anti-pinch window cleaner according to claim 6, characterized in that: An axially extending guide member is provided inside the first wiper. The conical member is provided with a guide hole for inserting the guide member. The guide hole is connected to a radially extending anti-rotation groove. The guide member is provided with an anti-rotation protrusion extending into the anti-rotation groove.

8. The anti-pinch window cleaner according to any one of claims 1 to 7, characterized in that: An axially extending guide rod is provided inside the first wiper, and the safety column is provided with a placement hole opening to the guide rod side. A second elastic member is provided on the outer sleeve of the guide rod, and the second elastic member extends into the placement hole. Under the action of the second elastic member, the safety column has a tendency to extend to the outside of the first wiper.

9. The anti-pinch window cleaner according to any one of claims 1 to 7, characterized in that: The end of the handle is rotatably connected to a knob, and the knob is connected to a screw that extends into the inside of the first wiper. A frame for fixing the magnet is provided inside the first wiper, and the screw is threadedly engaged with the frame; the screw is provided with an axially penetrating through-hole, and the movable rod passes through the through-hole, and the movable rod and the screw can rotate relative to each other; the lower end of the frame is provided with a downwardly opening cavity, and the linkage rod is slidably arranged in the cavity.

10. The anti-pinch window cleaner according to claim 9, characterized in that: An axially open groove is provided at the center of the knob, and the button is provided in the groove. The button and the groove can rotate relative to each other. A third elastic member is provided between the button and the bottom of the groove. The button and the movable rod are reset under the action of the third elastic member.

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