Half-folded shrinkage type foamed cotton mop head with improved structure and mop

Abstract

The utility model relates to a folding contraction type foam mop head with an improved structure, which comprises a foam wiping object and a support, swinging pieces capable of swinging are hinged to the left side and the right side of the support, and the foam wiping object is restrained on the swinging pieces and can contract or extend along the length direction of the swinging pieces. The swinging piece keeps a horizontal unfolding trend under the action of a first elastic piece; the mop is characterized in that the outer end of the foamed cotton wiping object is detachably locked with the swinging pieces, the swinging pieces on the two sides swing to the vertical direction, and water squeezing is achieved through the fact that the upper end of the foamed cotton wiping object shrinks from top to bottom. The end of the foam wiping object is fixed relative to the swing part, when force is applied to mop the floor in the length direction of the foam wiping object, the two ends of the foam wiping object cannot retract inwards under the action of friction force, and the floor mopping operation is more user-friendly. The utility model further relates to a mop.

Description

Technical Field

[0001] The utility model relates to a folding and retractable foamed cotton mop with an improved structure, wherein the foamed cotton can be glue cotton, sponge, Shu cotton or the like. The utility model also relates to a mop. Background Art

[0002] The applicant applied for a Chinese utility model patent "Foamed Cotton Mop Head and Mop" with the patent number ZL202223240604.2 (publication number CN219557184U), which discloses such a foamed cotton mop, including a mop rod and a foamed cotton mop head. The foamed cotton mop head includes a foamed cotton wiping object, a bracket for connecting with the mop rod. Swingable swing parts are hinged on the left and right sides of the bracket. The foamed cotton wiping object is constrained on the swing parts and can contract or extend along its length direction. When the swing parts on both sides swing to the vertical direction, the lower end of the foamed cotton wiping object contracts from bottom to top, or the upper end of the foamed cotton wiping object contracts from top to bottom to achieve water squeezing. The bracket is fixed at the lower end of the mop rod, and a driving handle capable of moving up and down is arranged on the mop rod. The driving handle is connected with the driving block; A selectable positioning structure capable of unlocking is arranged between the driving handle and the mop rod. The selectable positioning structure can position the driving handle relative to the mop rod at the upper position and the lower position. In the state where the driving handle is positioned at the upper position, the driving block is driven to maintain the upward movement position or the downward movement position. In the state where the driving handle is positioned at the lower position, the driving block is driven to maintain the downward movement position or the upward movement position. The swing part is in a shaft shape, and the foamed cotton wiping object is wound around the outer periphery of the swing part. A notch for placing the bracket therein is provided in the middle of the foamed cotton wiping object. Insertion holes for inserting the swing parts are provided in the foamed cotton wiping objects on both sides of the notch. When the swing parts swing downward relative to the bracket to the vertical direction, the insertion holes of the foamed cotton wiping object folded along the middle are upward, and the two swing parts can be vertically inserted into the insertion holes, and a plug for blocking the foamed cotton wiping object is connected to the outer ends of the swing parts.

[0003] When mopping the floor, the swing parts are kept horizontal under the action of external force, and the foamed cotton wiping object also keeps horizontal. However, since the end of the foamed cotton wiping object is not fixed to the swing part, when mopping the floor with force along the length direction of the foamed cotton, the outer end of the foamed cotton wiping object will contract inward under the action of the ground friction force, resulting in a stuck feeling when mopping the floor and affecting the comfort of mopping the floor.

[0004] Therefore, the aforementioned folding and retractable foamed cotton mop can be further improved. Content of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide a folding and retractable foamed cotton mop with an improved structure that is reasonable in structure and the outer end of the foamed cotton wiping object does not contract inward like the inner end when mopping the floor, aiming at the above-mentioned current situation of the prior art.

[0006] The technical solution adopted by the utility model to solve the above technical problems is: a structurally improved folding and shrinking foam mop head, including a foam wiper and a bracket, the left and right sides of the bracket are hinged with swinging swinging parts, the foam wiper is constrained on the swinging part and can shrink or stretch along its length direction, and the swinging part is maintained with a horizontal expansion tendency by the action of a first elastic part; it is characterized in that the outer end of the foam wiper is detachably locked with the swinging part, the swinging parts on both sides are swung to the vertical direction, and water is squeezed out by shrinking the upper end of the foam wiper from top to bottom.

[0007] In order to facilitate the restraint of the foam wiper on the mounting plate, a plurality of mounting plates are fixed on the foam wiper, and the mounting plates are mounted on the swing member through a guide rail structure, and the mounting plates can slide along the axial direction of the swing member, and the swing member is provided with a locking button for locking the outermost mounting plate. The mounting plate can be made of hard plastic, which is convenient for connecting with the swing member through the guide rail structure. By locking the outermost mounting plate through the locking button, the outer end of the foam wiper is locked with the swing member, and because the mounting plate is made of harder material, it is more convenient to lock with the swing member.

[0008] As a form of foam cotton, further improvement, the above-mentioned foam cotton wiper has a bottom, and the front and rear sides of the bottom have side walls extending upward, the bottom and the two side walls surround a mounting groove for the swinging member to be placed therein, and the top surface of the swinging member reveals the notch of the mounting groove. The overall cross-section of the foam cotton is U-shaped, so that the foam cotton is a semi-enclosed open structure, so that the foam cotton wiper is half-covered on the swinging member, and the combination with the swinging member is more secure. The top surface of the swinging member reveals the notch of the mounting groove, so that the foam cotton wiper does not need to be perforated, that is, the mold does not need to be designed with a core pulling mechanism, the structure of the mold is simplified, and the consumables of the overall foam cotton will also be reduced; furthermore, the structural characteristics of the present foam cotton enable the mold parting surface to be designed above the top of the foam cotton. During the manufacturing process, hot air can be discharged directly from the parting surface, and the exhaust is smoother, without the need to set an additional exhaust hole on the top. The structural characteristics of the foam cotton avoid the accumulation of bubbles at the top of the foam cotton during the manufacturing process, thereby improving the quality of the foam cotton.

[0009] As an improvement, the lock button is constrained in the swing member and can swing, the lock button is provided with a locking part, the outermost mounting plate is provided with a locking slot, the movement of the lock button can make the locking part insert into or out of the locking slot, the locking part inserts into the locking slot to lock the mounting plate relative to the swing member, and the locking part is out of the locking slot to release the mounting plate from the swing member. The locking or not is realized by swinging the lock button, and the locking and unlocking operations are very convenient.

[0010] Preferably, the middle part of the above-mentioned lock button is pivotally connected within the swing member through a pivot and can swing up and down. The locking part is provided at the outer end of the pivot. A spring is provided at the bottom of the locking part located at the inner end of the pivot. This spring keeps the inner end of the lock button in an upward swinging trend. A perforation is formed at the top of the swing member, and a button is installed within the perforation. The button abuts against the inner end of the lock button. The swingable lock button realizes locking and unlocking, so that during operation, only the button needs to be pressed. The setting of the spring enables the locking part of the lock button to automatically snap into the lock groove after the outermost mounting plate is installed.

[0011] For further improvement, the above-mentioned mounting plate is formed within the foam cleaning wipe in an insert molding manner. A part of the mounting plate is exposed outside the mounting groove to form a connecting part, and the connecting part of the mounting plate is connected to the swing member placed within the mounting groove. The mounting plate is formed within the foam cleaning wipe in an insert molding manner, enabling the mounting plate to be firmly fixed on the foam cleaning wipe without using glue, which is more environmentally friendly; the mounting plate is embedded within the foam cleaning wipe to form the framework of the foam cleaning wipe, strengthening the strength of the foam cleaning wipe. A part of the mounting plate is exposed outside the mounting groove to form a connecting part connected to the mounting plate, and the structural design is very reasonable.

[0012] As a preferred form of the guide rail structure, a guide groove is provided on the above-mentioned swing member, and the connecting part is snapped into the guide groove to form a sliding fit; of course, the guide rail structure can also adopt the following method, a guide groove is provided on the connecting part, and a guide block slidably matched with the guide groove is provided on the swing member.

[0013] As another form of foam, the above-mentioned mounting plate is formed within the foam cleaning wipe in an insert molding manner. The swing member is in a shaft shape. A notch for placing a bracket is provided in the middle of the foam cleaning wipe. The foam cleaning wipe surrounds and wraps around the outer periphery of the swing member. Insertion holes for the swing member to be inserted are provided within the foam cleaning wipe on both the left and right sides of the notch. The lock button is rotationally snapped into the outer end of the swing member to limit the outward movement of the outermost mounting plate. A shoulder for limiting the inward movement of the outermost mounting plate is provided on the swing member, and other mounting plates except the outermost one can pass through the shoulder.

[0014] Compared with the prior art, the advantages of this foam mop head are as follows: The outer end of the foam cleaning wipe is detachably locked together with the swing member. In the unfolded state, the end of the foam cleaning wipe is fixed relative to the swing member. When mopping the floor with force along the length direction of the foam cleaning wipe, the two ends of the foam cleaning wipe will not shrink inward under the action of friction, making the mopping operation more user-friendly. The foam cleaning wipe of this mop head is first folded in half and then shrunk or stretched along its length direction to squeeze water. The foam cleaning wipe has a large squeezable amount, and the cross-section of the foam cleaning wipe is small. Therefore, the squeezing force required per unit length is small. After folding in half, the length becomes shorter, and with the same squeezing amount, the water squeezing effect is better and the efficiency is higher.

[0015] The second technical problem to be solved by the utility model is to provide a foam mop that allows smoother and more comfortable mopping operation.

[0016] The technical solution adopted by the utility model to solve the above-mentioned second technical problem is: a mop, comprising a first rod, a second rod and a squeezing frame, characterized in that: it also includes the above-mentioned foam mop head, the bracket is connected to the lower end of the first rod, the squeezing frame is connected to the lower end of the second rod, the swinging member is maintained in a horizontal expansion trend by the action of the first elastic member, the first rod and the second rod are mutually sleeved and can move relative to each other, the downward movement of the squeezing frame relative to the bracket can push the swinging members on both sides to swing downward relative to the bracket and fold in half, and the further downward movement of the squeezing frame can drive the upper end of the folded foam wipe to shrink from top to bottom to achieve squeezing. As a specific setting mode of the squeezing frame, the above-mentioned first rod is sleeved outside the second rod, and a locking member is provided in the bracket. The locking member is maintained in a horizontal position by the action of the second elastic member, and the downward movement of the squeezing frame can drive the locking member to move in the unlocking direction. In order to ensure that the various components act in an orderly manner and do not interfere with each other, the downward movement of the squeezing frame first triggers the locking member to move to the unlocking position, and the further downward movement of the squeezing frame then pushes the swinging member to swing downward relative to the bracket and fold in half. When mopping the floor, the locking member always locks the swinging member in a horizontal position, and the swinging member will not swing passively due to the friction between the wiping material and the floor. Only when the second rod moves downward relative to the first rod, the squeezing rack moves downward to make the locking member move in the unlocking direction, and further downward movement drives the swinging member to fold in half.

[0017] The aforementioned water squeezing rack is driven by the second rod (inner rod), which miniaturizes the water squeezing rack and basically arranges it inside the bracket, making the overall structure more compact and small, reducing the packaging volume; of course, the water squeezing rack can also be driven by the outer rod, that is, the second rod is sleeved outside the first rod, and the water squeezing rack is arranged outside the bracket, similar to a sleeve-type water squeezing rack.

[0018] As a preferred arrangement of the locking member, the middle part of the locking member is hinged in the bracket, the second elastic member acts on the locking member so that the lower end of the locking member has a swinging tendency, the inner end of the swinging member has a stopper, the lower end of the locking member swings outwards against the stopper to prevent the swinging member from swinging downwards relative to the bracket, and the downward movement of the water squeezing rack can push the upper end of the locking member and make the lower end of the locking member swing inwards to disengage from the stopper. The second elastic member can be a spring or a torsion spring. The locking member in this structure can lock and unlock the swinging member by its own swinging, involving few parts, and has a simple structure and is easy to assemble. Of course, other existing locking methods can also be used.

[0019] Compared with the prior art, the advantages of this foamed cotton mop are as follows: when applying force to mop the floor along the length direction of the foamed cotton wiper, the two ends of the foamed cotton wiper will not shrink inward under the action of friction, making the mopping operation more user-friendly; through the relative axial movement of the first rod and the second rod, the downward movement of the water squeezing frame relative to the bracket can push the swinging parts on both sides to swing downward relative to the bracket and fold in half. The foamed cotton wiper is folded in half passively to squeeze out a part of the water first, and then the foamed cotton is squeezed along its length direction (vertically). After folding in half, the length becomes shorter, and with the same extrusion amount, the water squeezing effect is better, that is, to achieve the same squeezing dry effect, greatly shortening the water squeezing stroke, with higher water squeezing efficiency and more labor-saving operation. Description of the Drawings

[0020] Figure 1 Schematic three-dimensional structure diagram of the first embodiment of the mop (swinging part in horizontal state);

[0021] Figure 2 is Figure 1 cross-sectional view of;

[0022] Figure 3 Partial cross-sectional view of the first embodiment of the mop (swinging part in horizontal state, locking part just unlocked);

[0023] Figure 4 Schematic three-dimensional diagram of the mounting plate mounted on the swinging part in the first embodiment of the mop;

[0024] Figure 5 Schematic three-dimensional exploded view of the swinging part in the first embodiment of the mop;

[0025] Figure 6 Schematic three-dimensional structure diagram of the first embodiment of the mop (swinging part just folded into vertical state);

[0026] Figure 7 Schematic three-dimensional structure diagram of the first embodiment of the mop (swinging part in vertical state, foamed cotton wiper in contracted state);

[0027] Figure 8 is Figure 6 cross-sectional view of (removing the folded foamed cotton wiper);

[0028] Figure 9 is Figure 7 cross-sectional view of (removing the folded foamed cotton wiper);

[0029] Figure 10 Schematic three-dimensional diagram of the mop head in the first embodiment of the mop;

[0030] Figure 11 Schematic three-dimensional structure diagram of the foamed cotton wiper in the first embodiment of the mop;

[0031] Figure 12 Exploded perspective view of the mop head in the first embodiment of the mop;

[0032] Figure 13 Perspective view of the second embodiment of the mop (swing member in horizontal state);

[0033] Figure 14 Cross-sectional view of the second embodiment of the mop with the foam cotton wiper removed (swing member in horizontal state);

[0034] Figure 15 Partial exploded perspective view of the mop head part in the second embodiment of the mop. Detailed implementation manners

[0035] The present utility model will be further described in detail below in conjunction with the embodiments with reference to the drawings.

[0036] As Figures 1 to 12 shown, it is the first embodiment of a mop with a folded and shrinkable foam cotton mop head.

[0037] A mop includes a first rod 4a, a second rod 4b and a water squeezing frame 7, and further includes an open-type folded and shrinkable foam cotton mop head. The mop head specifically includes a foam cotton wiper 1 and a bracket 3 for connecting with the first rod 4a. Swingable swing members 2 are hinged on the left and right sides of the bracket 3. The foam cotton wiper 1 is constrained on the swing members 2 and can contract or extend along its length direction. When the swing members 2 on both sides swing to the vertical direction, water is squeezed through the contraction of the foam cotton wiper 1.

[0038] The foam cotton wiper 1 has a bottom 11, and the front and rear sides of the bottom 11 have upwardly extending side walls 12. The bottom 11 and the two side walls 12 enclose an installation groove 1b for the swing member 2 to be placed therein. In the state where the foam cotton wiper 1 is constrained on the swing member 2, the top surface 2a of the swing member 2 exposes the notch of the installation groove 1b. The cross-section of the installation groove 1b is arc-shaped, and the bottom surface of the swing member 2 is arc-shaped and matches the bottom surface of the installation groove 1b.

[0039] A plurality of mounting plates 5 are fixed on the foam cotton wiper 1. The mounting plates 5 are in the shape of thin plates. The mounting plates 5 are installed on the swing members 2 placed in the installation groove 1b through a guide rail structure, and the mounting plates 5 can slide axially along the swing members 2. The mounting plates 5 are formed in the foam cotton wiper 1 by an insert molding method, and a part of the mounting plates 5 is exposed in the installation groove 1b to form a connecting portion 5a. The connecting portion 5a of the mounting plates 5 is connected to the swing members 2 placed in the installation groove 1b.

[0040] The swing member 2 is provided with a guide groove 21, and the connecting portion 5a is snapped into the guide groove 21 to form a sliding fit; the guide groove can be provided on the side of the swing member, as shown in the figure, or can be provided on the bottom of the swing member.

[0041] Alternatively, a guide groove is provided on the connecting portion, and a guide block slidably engaged with the guide groove is provided on the swinging member.

[0042] A locking button 6 for locking the mounting plate at the outermost end on each swinging member 2 is provided. The locking button 6 is constrained within the swinging member 2 and can swing. A locking portion 61 is provided on the locking button 6. A locking groove 5b is formed in the mounting plate 5 at the outermost end. The movement of the locking button 6 can cause the locking portion 61 to insert into or disengage from the locking groove 5b. When the locking portion 61 inserts into the locking groove 5b, the mounting plate 5 is locked relative to the swinging member 2. When the locking portion 61 disengages from the locking groove 5b, the locking of the mounting plate 5 relative to the swinging member 2 is released. The outer end face of the locking portion 61 is an inclined surface or an arc surface. The middle of the locking button 6 is pivotally connected within the swinging member 2 through a pivot 62 and can swing up and down. The locking portion 61 is provided at the outer end of the pivot 62. A spring 63 is provided at the bottom of the locking button 6 at the inner end of the pivot 62. The spring 63 causes the inner end of the locking button 6 to maintain an upward swinging tendency. A through hole 23 is formed at the top of the swinging member 2, and a button 64 is installed in the through hole 23. The button 64 abuts against the inner end of the locking button 6.

[0043] The bracket 3 is connected to the lower end of the first rod 4a, the water squeezing frame 7 is connected to the lower end of the second rod 4b. The swinging member 2 is kept in a tendency of horizontal expansion by the action of the first elastic member 9a. The first rod 4a and the second rod 4b are sleeved with each other and can move relative to each other. The downward movement of the water squeezing frame 7 relative to the bracket 3 can push the swinging members 2 on both sides to swing downward relative to the bracket 3 and fold. Further downward movement of the water squeezing frame 7 can drive the upper end 1c of the folded foam wiping object 1 to contract from top to bottom to achieve water squeezing.

[0044] Specifically, the first rod 4a is sleeved outside the second rod 4b. A locking member 8 is provided within the bracket 3. The locking member 8 is kept in a tendency of locking the swinging member 2 in the horizontal position by the action of the second elastic member 9b. And the downward movement of the water squeezing frame 7 can drive the locking member 8 to move in the unlocking direction. The downward movement of the water squeezing frame 7 first triggers the locking member 8 to move to the unlocking position, and further downward movement of the water squeezing frame 7 then pushes the swinging member 2 to swing downward relative to the bracket 3 and fold.

[0045] The middle of the locking member 8 is hinged within the bracket 3. The second elastic member 9b acts on the locking member 8 to make the lower end of the locking member 8 have a tendency of swinging outward. The inner end of the swinging member 2 has a blocking portion 22. The lower end of the locking member 8 swings outward and abuts above the blocking portion 22 to block the swinging member 2 from swinging downward relative to the bracket 3. The downward movement of the water squeezing frame 7 can push the upper end of the locking member 8 and make the lower end of the locking member 8 swing inward to disengage from the blocking portion 22.

[0046] The working principle and process of this folding foam mop are as follows:

[0047] During cleaning, such as Figure 1As shown, the second rod 4b drives the water squeezing frame 7 to be in the upward movement position. The foam cotton wiper 1 is horizontally unfolded with the swinging member 2 under the action of the first elastic member 9a (torsion spring). Under the action of the second elastic member 9b, the lower end of the locking member 8 swings outwards and abuts above the gear portion 22 to block the swinging member 2 from swinging downwards relative to the bracket 3, ensuring that the swinging member 2 does not swing towards the folding direction during the mopping process. And the inner end of the lock button 6 maintains an upward swinging trend under the action of the spring 63. The locking portion 61 is inserted into the lock groove 5b to realize the locking of the mounting plate 5 relative to the swinging member 2. When applying force to mop along the length direction after the foam cotton wiper 1 is unfolded, the two ends of the foam cotton wiper 1 will not shrink inwards under the action of friction, making the mopping operation more user-friendly and facilitating the cleaning operation.

[0048] When the foam cotton wiper 1 needs to be replaced, swing the swinging member 2 to the folding position. Then, just press the button 64, and the inner end of the lock button 6 swings downwards, and the locking portion 61 disengages from the lock groove 5b to release the locking of the mounting plate 5 relative to the swinging member 2, and the entire foam cotton wiper 1 can be pulled down and removed from the swinging member 2.

[0049] When squeezing water, as Figures 6 to 9 shown, hold the first rod 4a with one hand and push down the second rod 4b with the other hand. The water squeezing frame 7 moves downwards accordingly, pushing the upper end of the locking member 8 and causing the lower end of the locking member 8 to swing inwards and disengage from the gear portion 22. In this stage, the downward movement of the water squeezing frame 7 does not apply a torsion force to the swinging member 2 to make it swing, so that the force for the locking member 8 to lock the swinging member 2 and the force for the water squeezing frame 7 to push the swinging member 2 to swing downwards are independent of each other and do not interfere. When the water squeezing frame 7 moves further downwards, the water squeezing frame 7 can contact the swinging member 2 and drive the swinging member 2 to deflect towards the folding position; when the water squeezing frame 7 moves further downwards, it drives the upper end 3a of the folded foam cotton wiper 3 to contract from top to bottom to squeeze water. Move the mop rod 1 up and down within a certain range, and the upper end 1c of the folded foam cotton wiper 1 repeatedly contracts from top to bottom, and finally completes the water squeezing.

[0050] As Figures 13 to 15 shown, it is the second embodiment of a mop with a folded and shrinkable foam cotton mop head.

[0051] The differences between this embodiment and the first embodiment are as follows: The mounting plate 5 is formed in the foam wiping material 1 by means of inserts. The swinging member 2 is shaft-shaped. The middle part of the foam wiping material 1 has a notch 13 for the bracket 3 to be placed therein. The foam wiping material 1 surrounds and covers the outer periphery of the swinging member 2. Insertion holes 14 for the swinging member 2 to be inserted are provided in the foam wiping material 1 on both the left and right sides of the notch 13. The locking knob 6 is rotatably inserted into the outer end of the swinging member 2 to limit the outward movement of the outermost mounting plate 5. The knob 6 limits the connecting portion 5a. A shoulder 24 for limiting the inward movement of the outermost mounting plate 5 is provided on the swinging member 2. The other mounting plates 5 except the outermost one can pass through the shoulder 24, that is, the inner diameter of the outermost mounting plate 5 is smaller than the outer diameter of the outer circle where the outer peripheral surface of the shoulder 24 is located. Additionally, the inner diameter of the mounting plate 5 is larger than the outer diameter of the outer circle where the outer peripheral surface of the shoulder 24 is located.

[0052] It should be noted that in the description of this embodiment, the orientation or positional relationship indicated by terms such as "front, back", "left, right", "inner, outer", "up, down", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. The terms "mounting", "connecting", "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A folding and retractable foamed cotton mop head with improved structure, comprising a foamed cotton wiper (1) and a bracket (3). Swingable swing members (2) are hinged to the left and right sides of the bracket (3). The foamed cotton wiper (1) is constrained on the swing members (2) and can contract or extend along its length direction. The swing members (2) tend to be horizontally unfolded under the action of a first elastic member (9a); characterized in that: The outer end of the foam swab (1) is detachably locked together with the swing member (2). When the swing members (2) on both sides swing to the vertical direction, water is squeezed out by the upper end (1c) of the foam swab (1) shrinking from top to bottom.

2. The foldable and retractable foamed cotton mop head with improved structure according to claim 1, wherein: Multiple mounting plates (5) are fixed on the foam swab (1). The mounting plates (5) are mounted on the swing member (2) through a guide rail structure. The mounting plates (5) can slide axially along the swing member (2), and a lock button (6) for locking the outermost mounting plate (5) is provided on the swing member (2).

3. The foldable and shrinkable foamed cotton mop head with improved structure according to claim 2, characterized in that: The foam swab (1) has a bottom (11). The front and rear sides of the bottom (11) have upwardly extending side walls (12). The bottom (11) and the two side walls (12) enclose a mounting groove (1b) for the swing member (2) to be placed therein. The top surface (2a) of the swing member (2) exposes the notch of the mounting groove (1b).

4. The foldable and contractible foamed cotton mop head with improved structure according to claim 3, wherein: The lock button (6) is constrained within the swing member (2) and can swing. A locking portion (61) is provided on the lock button (6). A lock groove (5b) is formed in the outermost mounting plate (5). The movement of the lock button (6) can cause the locking portion (61) to insert into or disengage from the lock groove (5b). When the locking portion (61) inserts into the lock groove (5b), the mounting plate (5) is locked relative to the swing member (2). When the locking portion (61) disengages from the lock groove (5b), the locking of the mounting plate (5) relative to the swing member (2) is released.

5. The foldable and retractable foamed cotton mop head with improved structure according to claim 4, characterized in that: The middle of the lock button (6) is pivotally connected within the swing member (2) by a pivot (62) and can swing up and down. The locking portion (61) is provided at the outer end of the pivot (62). A spring (63) is provided at the bottom of the inner end of the lock button (6) located at the inner end of the pivot (62). The spring (63) causes the inner end of the lock button (6) to maintain an upward swing tendency. A through hole (23) is formed in the top of the swing member (2), and a button (64) is installed in the through hole (23). The button (64) abuts against the inner end of the lock button (6).

6. The folded and shrinkable foamed cotton mop head with improved structure according to claim 4, wherein: The mounting plate (5) is formed within the foam swab (1) by an insert molding method. A part of the mounting plate (5) is exposed in the mounting groove (1b) to form a connecting portion (5a). The connecting portion (5a) of the mounting plate (5) is connected to the swing member (2) placed in the mounting groove (1b).

7. The foldable and retractable foamed cotton mop head with improved structure according to claim 6, wherein: A guide groove (21) is provided on the swing member (2). The connecting portion (5a) is snapped into the guide groove (21) to form a sliding fit; alternatively, a guide groove is provided on the connecting portion, and a guide block slidably matched with the guide groove is provided on the swing member.

8. The folded and shrinkable foamed cotton mop head with improved structure according to claim 2, wherein: The mounting plate (5) is formed in the foamed cotton wiper (1) by means of an insert. The swing member (2) is shaft-shaped. The middle part of the foamed cotton wiper (1) has a notch (13) for the bracket (3) to be placed therein. The foamed cotton wiper (1) surrounds and covers the outer periphery of the swing member (2). Insertion holes (14) for the swing member (2) to be inserted are provided in the foamed cotton wiper (1) on both the left and right sides of the notch (13). The lock button (6) is rotationally inserted into the outer end of the swing member (2) to limit the outward movement of the outermost mounting plate (5). A shoulder (24) for limiting the inward movement of the outermost mounting plate (5) is provided on the swing member (2). The other mounting plates (5) except the outermost one can pass through the shoulder (24).

9. A mop, comprising a first rod (4a), a second rod (4b) and a water wringer (7), characterized in that: It further includes the folded and retractable foamed cotton mop head according to any one of claims 1 to 8. The bracket (3) is connected to the lower end of the first rod (4a). The water squeezing frame (7) is connected to the lower end of the second rod (4b). The swing member (2) tends to be horizontally unfolded under the action of the first elastic member (9a). The first rod (4a) and the second rod (4b) are sleeved with each other and can move relative to each other. The downward movement of the water squeezing frame (7) relative to the bracket (3) can push the swing members (2) on both sides to swing downward relative to the bracket (3) for folding. Further downward movement of the water squeezing frame (7) can drive the upper end (1c) of the folded foamed cotton wiper (1) to contract from top to bottom to squeeze water.

10. The mop according to claim 9, characterized in that: The first rod (4a) is sleeved outside the second rod (4b). A locking member (8) is provided in the bracket (3). The locking member (8) tends to lock the swing member (2) in the horizontal position under the action of the second elastic member (9b). And the downward movement of the water squeezing frame (7) can drive the locking member (8) to move in the unlocking direction. The downward movement of the water squeezing frame (7) first triggers the locking member (8) to move to the unlocking position, and further downward movement of the water squeezing frame (7) then pushes the swing member (2) to swing downward relative to the bracket (3) for folding. The middle part of the locking member (8) is hinged in the bracket (3). The second elastic member (9b) acts on the locking member (8) to make the lower end of the locking member (8) tend to swing. The inner end of the swing member (2) has a blocking portion (22). The lower end of the locking member (8) swings outward and abuts above the blocking portion (22) to block the swing member (2) from swinging downward relative to the bracket (3). The downward movement of the water squeezing frame (7) can push the upper end of the locking member (8) to make the lower end of the locking member (8) swing inward and disengage from the blocking portion (22).

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