Telescopic handle and scrubber

Abstract

The embodiment of the invention provides a telescopic handle and a scrubber, and relates to the field of electrical equipment. The telescopic handle comprises a handle body, a connecting rod and a telescopic mechanism. Racks are arranged on rod bodies of the connecting rods, and the extension direction of the racks is parallel to the length direction of the connecting rods. The telescopic mechanism comprises a shell and a gear, and the gear is installed on the shell. One end of the connecting rod is connected with the handle, and the rack is meshed with the gear, so that the relative position of the connecting rod and the shell is changed when the gear rolls. A connecting rod and a telescopic mechanism in the telescopic handle are connected through a gear and a rack, so that the distance between the handle and the telescopic mechanism can be adjusted. The telescopic handle can be arranged in the scrubber, so that the length of the scrubber can be adjusted, the gravity center of the scrubber is lowered when the scrubber is vertically placed, the stability of the scrubber is improved, and the scrubber is prevented from toppling over.

Description

Technical Field

[0001] The present disclosure relates to the field of electrical equipment, and in particular to a retractable handle and a floor scrubber. Background Art

[0002] With the advancement of technology, floor scrubbers have more and more functions and have become a common household electrical appliance. Floor scrubbers are placed at a high height when placed vertically, and are easily touched and tipped over at home, causing damage to the floor scrubber. Therefore, the center of gravity of the floor scrubber can be lowered by reducing its height to improve its stability when placed vertically.

[0003] In the related art, a detachable floor scrubber handle is provided to lower the center of gravity of the floor scrubber. However, the removal and installation process of the handle is cumbersome, and the handle and the body need to be stored separately. Summary of the invention

[0004] In view of this, the present disclosure provides a retractable handle and a floor scrubber, which can adjust the length of the floor scrubber.

[0005] Specifically, the following technical solutions are included:

[0006] The disclosed embodiment provides a retractable handle, including a handle, a connecting rod and a retractable mechanism;

[0007] The rod body of the connecting rod is provided with a rack, and the extending direction of the rack is parallel to the length direction of the connecting rod;

[0008] The telescopic mechanism comprises a housing and a gear, wherein the gear is mounted on the housing;

[0009] One end of the connecting rod is connected to the handle, and the rack is meshed with the gear, so that the relative position of the connecting rod and the housing changes when the gear rolls.

[0010] Optionally, the telescopic mechanism further comprises a locking member, wherein the locking member is connected to the housing, the locking member has a first protrusion, a surface of the connecting rod is provided with a slot, and the first protrusion can be inserted into or removed from the slot.

[0011] Optionally, the locking member has a second protrusion, the second protrusion is hinged to the outer surface of the shell, the shell has a through hole, and the first protrusion is located in the through hole.

[0012] Optionally, the telescopic mechanism also includes an elastic member, which is located between the locking member and the outer surface of the shell, and is respectively connected to the first end of the locking member and the outer surface of the shell, the first protrusion is located at the second end of the locking member, the first end is opposite to the second end, and the second protrusion is located between the first end and the second end.

[0013] Optionally, the elastic member is a spring.

[0014] Optionally, the outer surface of the shell has a first groove, and the locking element is located in the first groove.

[0015] Optionally, the shaft of the connecting rod has a second groove, and the rack is located in the second groove.

[0016] Optionally, the gear is a damping gear.

[0017] Optionally, a pole piece is provided on the surface of the connecting rod, and the telescopic mechanism further comprises a spring sheet, and the spring sheet is located in the shell, and when the first protrusion is located in the slot, the pole piece abuts against the spring sheet.

[0018] Optionally, a plurality of corresponding slots and a plurality of pole pieces are provided on the surface of the connecting rod, and when the first protrusion is located in any of the slots, the pole piece corresponding to the slot abuts against the spring piece.

[0019] Optionally, a channel and an installation space are provided in the shell, the channel is communicated with the installation space, the connecting rod can move in the channel, and the gear is located in the installation space.

[0020] Optionally, the shell includes a first body and a second body, the first body and the second body are arranged opposite to each other, and the channel and the installation space are located between the first body and the second body.

[0021] An embodiment of the present disclosure provides a floor scrubber, comprising a body and the above-mentioned retractable handle, wherein the retractable mechanism is located inside the body.

[0022] The beneficial effects of the technical solution provided by the embodiments of the present disclosure include at least:

[0023] In the retractable handle provided in the embodiment of the present disclosure, the connecting rod and the telescopic mechanism are connected through a gear and a rack. When the gear rotates, the connecting rod can be driven by the rack to move closer to or farther from the telescopic mechanism, thereby adjusting the distance between the handle and the telescopic mechanism. The retractable handle can be set in a floor scrubber, thereby adjusting the length of the floor scrubber, lowering the center of gravity of the floor scrubber when the floor scrubber is placed vertically, which is beneficial to improving the stability of the floor scrubber and preventing the floor scrubber from tipping over. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 A schematic diagram of a retractable handle provided for an embodiment of the present disclosure;

[0026] Figure 2 A partial schematic diagram of a retractable handle provided in an embodiment of the present disclosure;

[0027] Figure 3 A schematic diagram of a retractable handle provided for an embodiment of the present disclosure;

[0028] Figure 4 A partial schematic diagram of a retractable handle provided in an embodiment of the present disclosure;

[0029] Figure 5 A partial schematic diagram of a retractable handle provided for implementation of the present disclosure;

[0030] Figure 6 A schematic diagram of a handle and a connecting rod provided for an embodiment of the present disclosure;

[0031] Figure 7 A schematic diagram of a handle and a connecting rod provided for an embodiment of the present disclosure;

[0032] Figure 8 An exploded view of a retractable handle provided for an embodiment of the present disclosure;

[0033] Fig. 9 A schematic diagram of a first body provided in an embodiment of the present disclosure;

[0034] Fig.10 A schematic diagram of a second body and a gear provided in an embodiment of the present disclosure;

[0035] Fig.11 A schematic diagram of a floor scrubber provided for implementation of the present disclosure.

[0036] The reference numerals in the figures represent respectively:

[0037] 1-handle; 2-connecting rod; 21-rack; 22-slot; 23-second groove; 24-pole piece;

[0038] 3- telescopic mechanism; 31- housing; 32- gear; 321- gear shaft; 33- locking member; 331- first protrusion; 332- second protrusion; 333- third protrusion; 35- spring piece; 314- channel; 315- installation space; 316- first plug hole; 317- second plug hole; 301- first body; 302- second body; 36- rotating shaft;

[0039] 4-Body.

[0040] The above drawings show clear embodiments of the present disclosure, which will be described in more detail below. These drawings and text descriptions are not intended to limit the scope of the present disclosure in any way, but to illustrate the concepts of the present disclosure to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0042] Figure 1 Schematic diagram of a retractable handle provided in an embodiment of the present disclosure. Figure 1 As shown, the telescopic handle comprises a handle 1, a connecting rod 2 and a telescopic mechanism 3. The connecting rod 2 is provided with a rack 21, and the extending direction of the rack 21 is parallel to the length direction of the connecting rod 2. The telescopic mechanism 3 comprises a housing 31 and a gear 32, and the gear 32 is mounted on the housing 31. Figure 2 A partial schematic diagram of a retractable handle provided in an embodiment of the present disclosure. Figure 2 As shown, one end of the connecting rod 2 is connected to the handle 1, and the rack 21 is meshed with the gear 32, so that the relative position of the connecting rod 2 and the housing 31 changes when the gear 32 rolls.

[0043] In the telescopic handle provided in the embodiment of the present disclosure, the connecting rod 2 and the telescopic mechanism 3 are connected through the gear 32 and the rack 21, so that the distance between the handle 1 and the telescopic mechanism 3 can be adjusted. The telescopic handle can be set in the floor scrubber, so that the length of the floor scrubber can be adjusted through the telescopic handle. When the floor scrubber is placed vertically, the connecting rod 2 can be retracted into the inside of the floor scrubber, so that the center of gravity of the floor scrubber can be lowered, which is beneficial to improve the stability of the floor scrubber and prevent the floor scrubber from tipping over.

[0044] In order to make the technical solutions and advantages of the present disclosure more clear, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

[0045] like Figure 1 As shown, the telescopic handle provided by the embodiment of the present disclosure includes a handle 1, a connecting rod 2 and a telescopic mechanism 3. One end of the connecting rod 2 is connected to the handle 1, and the other end of the connecting rod 2 is at least partially located in the telescopic mechanism 3. The rod body of the connecting rod 2 is provided with a rack 21, and the extension direction of the rack 21 is parallel to the length direction of the connecting rod 2. Exemplarily, the handle 1 is U-shaped, the connecting rod 2 is cylindrical, the telescopic mechanism 3 is a square box-shaped structure, and the handle 1 and the connecting rod 2 are connected to form a closed ring.

[0046] See also Figure 2 In the telescopic handle provided by the embodiment of the present disclosure, the telescopic mechanism 3 includes a housing 31 and a gear 32, the gear 32 is located in the housing 31, the rack 21 faces the side close to the gear 32, and the gear 32 cooperates with the rack 21. When the connecting rod 2 moves in a direction close to the telescopic mechanism 3 under the action of an external force, the gear 32 rotates counterclockwise, so that the handle 1 and the connecting rod 2 gradually approach the telescopic mechanism 3, reducing the distance between the handle 1 and the telescopic mechanism 3, thereby reducing the length of the telescopic handle. When the connecting rod 2 moves in a direction away from the telescopic mechanism 3 under the action of an external force, the gear 32 rotates clockwise, increasing the distance between the handle 1 and the telescopic mechanism 3, thereby increasing the length of the telescopic handle.

[0047] Figure 3 A schematic diagram of a retractable handle provided in an embodiment of the present disclosure. In some embodiments of the present disclosure, such as Figure 3 As shown, the telescopic mechanism 3 further includes a locking member 33, and the locking member 33 and the handle 1 are respectively located on opposite sides of the connecting rod 2. The locking member 33 is used to lock the connecting rod 2, that is, to lock the relative position of the connecting rod 2 and the telescopic mechanism 3.

[0048] Figure 4 A partial schematic diagram of a retractable handle provided in an embodiment of the present disclosure. Figure 4 The locking member 33 is connected to the housing 31, and the locking member 33 has a first protrusion 331. The surface of the connecting rod 2 is provided with a slot 22, and the first protrusion 331 can be inserted into or removed from the slot 22. When the first protrusion 331 is located outside the slot 22, the connecting rod 2 can move relative to the housing 31, and when the first protrusion 331 is located in the slot 22, the relative position of the connecting rod 2 and the housing 31 is fixed.

[0049] In some embodiments of the present disclosure, Figure 4As shown, the locking member 33 has a second protrusion 332, the second protrusion 332 is hinged to the outer surface of the housing 31, the housing 31 has a through hole 311, and the first protrusion 331 is located in the through hole 311. The locking member 33 is arranged on the outer surface of the housing 31, so that the locking of the connecting rod 2 can be controlled from outside the housing 31. When the locking member 33 rotates with the second protrusion 332 as the hinge axis, the first protrusion 331 can move in the through hole 311, and when the card slot 22 is opposite to the through hole 311, the first protrusion 331 can pass through the through hole 311 and be inserted into the card slot 22 or be pulled out from the card slot 22.

[0050] It should be noted that the locking slot 22 and the rack 21 are respectively located on opposite sides of the connecting rod 2 to avoid mutual interference between the locking member 33 and the gear 32 .

[0051] In some embodiments of the present disclosure, Figure 4 As shown, the telescopic mechanism 3 further includes an elastic member 34, and the elastic member 34 is located between the locking member 33 and the outer surface of the housing 31. The locking member 33 has a first end and a second end opposite to each other, and the two ends of the elastic member 34 are respectively connected to the first end of the locking member 33 and the outer surface of the housing 31, the first protrusion 331 is located at the second end of the locking member 33, and the second protrusion 332 is located between the first end and the second end. The elastic member 34, the first protrusion 331, and the second protrusion 332 are located on a side of the locking member 33 close to the housing 31. The elastic member 34 and the locking member 33 form a lever structure, and the elastic member 34 is in a compressed state, so that the first end of the locking member 33 is tilted, the second end is pressed down, and the first protrusion 331 is against the bottom of the slot 22. When an external force presses the first end of the locking member 33 , the elastic member 34 is further compressed, the first end of the locking member 33 is pressed down, and the second end is tilted, so that the first protrusion 331 is pulled out of the slot 22 , thereby unlocking the connecting rod 2 and enabling the connecting rod 2 to move relative to the telescopic mechanism 3 .

[0052] In some embodiments of the present disclosure, Figure 4 As shown, the outer surface of the housing 31 has a first groove 312, and the locking member 33 is located in the first groove 312. The first groove 312 is used to accommodate the locking member 33 and the elastic member 34 to prevent the locking member 33 and the elastic member 34 from protruding relative to the outer surface of the housing 31.

[0053] Figure 5 A partial schematic diagram of a retractable handle provided for implementation of the present disclosure. In some embodiments of the present disclosure, such as Figure 5As shown, the elastic member 34 is a spring. The locking member 33 has a third protrusion 333 on one side close to the housing 31, and the third protrusion 333 is located at the first end of the locking member 33. The bottom of the first groove 312 has a blind hole 313, and the blind hole 313 is opposite to the third protrusion 333. One end of the spring is sleeved outside the third protrusion 333, and the other end of the spring is located in the blind hole 313, so that the spring is always in a compressed state.

[0054] See also Figure 5 A hinge seat 3121 is provided at the bottom of the first groove 312, and the hinge seat 3121 is located between the blind hole 313 and the through hole 311. The telescopic mechanism 3 also includes a rotating shaft 36, which passes through the second protrusion 332 and the hinge seat 3121, thereby hingedly connecting the locking member 33 to the shell 31.

[0055] Figure 6 Schematic diagram of a handle 1 and a connecting rod 2 provided in an embodiment of the present disclosure. In some embodiments of the present disclosure, such as Figure 5 As shown, a plurality of slots 22 are provided on the surface of the connecting rod 2, and the plurality of slots 22 are located on the same straight line parallel to the length direction of the connecting rod 2. The plurality of slots 22 and the first protrusion 331 can fix the connecting rod 2 and the telescopic mechanism 3 at multiple positions relative to each other, thereby realizing multi-stage adjustment of the length of the retractable handle.

[0056] For example, Figure 6 As shown, the connecting rod 2 has two slots 22, one of which is located at a side close to the handle 1, and the other is located at an end away from the handle 1. When the first protrusion 331 is located in the slot 22 at the side close to the handle 1, the telescopic handle is in a state of being retracted to the shortest, and when the first protrusion 331 is located in the slot 22 at the side away from the handle 1, the telescopic handle is in a state of being fully extended.

[0057] Figure 7 Schematic diagram of a handle 1 and a connecting rod 2 provided in an embodiment of the present disclosure. In some embodiments of the present disclosure, such as Figure 7 As shown, the rod body of the connecting rod 2 has a second groove 23, and the rack 21 is located in the second groove 23. The width of the second groove 23 is greater than the thickness of the gear 32. When the gear 32 cooperates with the rack 21, the gear 32 is partially located in the second groove 23. The second groove 23 can hide the rack 21 arranged on the connecting rod 2, preventing the rack 21 from protruding from the outer surface of the connecting rod 2, thereby reducing the situation where the rack 21 collides with other objects and is damaged.

[0058] In some embodiments of the present disclosure, Figure 7 As shown, a pole piece 24 is provided on the surface of the connecting rod 2, and the pole piece 24 is located at an end away from the handle 1. A button is provided on the handle 1, and the pole piece 32 is electrically connected to the button on the handle 1.

[0059] Figure 8 An exploded view of a retractable handle provided in accordance with an embodiment of the present disclosure. Figure 8 The telescopic mechanism 3 further includes a spring sheet 35, which is located in the housing 31. When the first protrusion 331 is located in the slot 22 away from the handle 1, the pole piece 24 abuts against the spring sheet 35. The pole piece 24 abuts against the spring sheet 35 to electrically connect the connecting rod 2 to the housing 31. Other electrical components in the device are electrically connected to the housing 31, and the buttons on the handle 1 are used to control other electrical components in the device. When the connecting rod 2 is relatively close to the housing 31, the first protrusion 331 is located outside the slot 22 away from the handle 1, and the pole piece 24 is separated from the spring sheet 35, thereby disconnecting the electrical connection between the handle 1 and the housing 31. When the connecting rod 2 is pulled out relative to the housing 31 until the first protrusion 331 is located in the slot 22 away from the handle 1, the pole piece 24 abuts against the spring sheet 35, thereby electrically connecting the handle 1 to the housing 31, so as to facilitate the control of the operation of the device through the handle 1.

[0060] Alternatively, if Figure 8 As shown, the housing 31 has a channel 314 and an installation space 315, the channel 314 is connected to the installation space 315, the connecting rod 2 can move in the channel 314, and the gear 32 is located in the installation space 315. The channel 314 is cylindrical and matches the shape of the connecting rod 2. The connecting rod 2 is matched with the inner wall of the channel 314 through clearance, so that it can move axially in the channel 314. The spring sheet 35 is located in the channel 314 and is located at the end away from the handle 1. The area where the spring sheet 35 is located is concave inward, and the area where the pole piece 24 is located is convex outward, so as to facilitate the spring sheet 35 and the pole piece 24 to fit together. The installation space 315 is located on one side of the channel 314, a part of the gear 32 is located in the installation space 315, and the other part is located in the channel 314, so that it can mesh with the rack 21 in the channel 314.

[0061] In some embodiments of the present disclosure, Figure 8 As shown, the housing 31 includes a first body 301 and a second body 302 , the first body 301 and the second body 302 are arranged opposite to each other, and the channel 314 and the installation space 315 are located between the first body 301 and the second body 302 .

[0062] Fig. 9 Schematic diagram of the first body 301 provided in the embodiment of the present disclosure. Fig. 9 The first body 301 has a first insertion hole 316 in the installation space 315. The first insertion hole 316 is used to install the gear 32. The installation space 315 is cylindrical, and the first insertion hole 316 is coaxially arranged with the installation space 315.

[0063] Fig.10A schematic diagram of a second body 302 and a gear 32 provided in an embodiment of the present disclosure, as shown in FIG. Fig.10 As shown, the installation space 315 of the second body 302 has a second hole 317, and the second hole 317 is opposite to the first hole 316. The gear 32 has a gear shaft 321, one end of the gear shaft 321 is located in the first hole 316, and the other end of the gear shaft 321 is located in the second hole 317. The diameter of the installation space 315 is slightly larger than the outer diameter of the gear 32, so that the gear 32 is axially fixed in the installation space 315.

[0064] Optionally, the gear 32 is a damping gear. The gear 32 is subject to resistance when rotating clockwise or counterclockwise, and can apply resistance to the connecting rod 2 when the connecting rod 2 moves relative to the telescopic mechanism 3, reducing the moving speed of the connecting rod 2, making it easier for the first protrusion 331 of the locking member 33 to be inserted into the slot 22 of the connecting rod 2, avoiding collision between the first protrusion 331 of the locking member 33 and the slot 22 of the connecting rod 2, thereby damaging the telescopic mechanism 3. When the handle 1 is pulled by hand, the damping gear can provide better force feedback, so that the connecting rod 2 can be smoothly adjusted to the required length.

[0065] In some embodiments of the present disclosure, a plurality of pole pieces 24 are provided on the surface of the connecting rod 2, and the plurality of pole pieces 24 correspond to the plurality of slots 22 one by one. When the first protrusion 331 is located in any slot 22, the pole piece 24 corresponding to the slot 22 abuts against the spring piece 35. The plurality of slots 22 allow the connecting rod 2 to have a plurality of adjustable lengths, and at any length, the pole piece 24 can abut against the spring piece 35, so that the handle 1 can be electrically connected to the housing 31, so that other electrical components in the device can be controlled through the handle 1, so that the length of the connecting rod 2 can meet various usage requirements.

[0066] In addition, an embodiment of the present disclosure also provides a floor scrubber. Fig.11 Schematic diagram of a floor scrubber provided in an embodiment of the present disclosure. Fig.11 As shown, the floor scrubber includes a body 4 and the above-mentioned telescopic handle, wherein the telescopic mechanism 3 is located inside the body 4, and the locking member 33 is located outside the outer surface of one side of the body 4, so as to facilitate the adjustment of the telescopic handle. In the floor scrubber provided by the embodiment of the present disclosure, the connecting rod 2 of the telescopic handle and the telescopic mechanism 3 are connected by a gear 32 and a rack 21, so that the distance between the handle 1 and the telescopic mechanism 3 can be adjusted. When the floor scrubber is in use, the connecting rod 2 can be pulled out of the telescopic mechanism 3, thereby increasing the overall length of the floor scrubber for easy cleaning. After the floor scrubber is turned off, the connecting rod 2 can be retracted into the body 4, thereby reducing the length of the floor scrubber and lowering the center of gravity of the floor scrubber when the floor scrubber is placed vertically, which is beneficial to improving the stability of the floor scrubber and preventing the floor scrubber from tipping over.

[0067] It should be noted that the "several" and "at least one" mentioned in this article refer to one or more, and "multiple" and "at least two" refer to two or more. "And / or" describes the association relationship of the associated objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0068] In the description of the present disclosure, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0069] In the present disclosure, unless otherwise expressly specified and limited, a first feature being “above” or “below” a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being “above”, “above”, and “above” a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0070] In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present disclosure.

[0071] In the description of this specification, the description with reference to the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present disclosure.

[0072] The above descriptions are merely embodiments of the present disclosure and are not intended to limit the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A retractable handle, characterized in that: It comprises a handle (1), a connecting rod (2) and a telescopic mechanism (3); The rod body of the connecting rod (2) is provided with a rack (21), and the extension direction of the rack (21) is parallel to the length direction of the connecting rod (2); The telescopic mechanism (3) comprises a housing (31) and a gear (32), wherein the gear (32) is mounted on the housing (31); One end of the connecting rod (2) is connected to the handle (1), and the rack (21) is meshed with the gear (32), so that the relative position of the connecting rod (2) and the housing (31) changes when the gear (32) rolls.

2. The retractable handle according to claim 1, characterized in that: The telescopic mechanism (3) further comprises a locking member (33), wherein the locking member (33) is connected to the housing (31), and the locking member (33) has a first protrusion (331). A slot (22) is provided on the surface of the connecting rod (2), and the first protrusion (331) can be inserted into or removed from the slot (22).

3. The retractable handle according to claim 2, characterized in that: The locking member (33) has a second protrusion (332), the second protrusion (332) is hinged to the outer surface of the shell (31), the shell (31) has a through hole (311), and the first protrusion (331) is located in the through hole (311).

4. The retractable handle according to claim 3, characterized in that: The telescopic mechanism (3) further comprises an elastic member (34), wherein the elastic member (34) is located between the locking member (33) and the outer surface of the shell (31), and is respectively connected to the first end of the locking member (33) and the outer surface of the shell (31); the first protrusion (331) is located at the second end of the locking member (33), the first end is opposite to the second end, and the second protrusion (332) is located between the first end and the second end.

5. The retractable handle according to claim 4, characterized in that: The elastic member (34) is a spring.

6. The retractable handle according to claim 2, characterized in that: The outer surface of the housing (31) has a first groove (312), and the locking element (33) is located in the first groove (312).

7. The retractable handle according to claim 1, characterized in that: The rod body of the connecting rod (2) has a second groove (23), and the rack (21) is located in the second groove (23).

8. The retractable handle according to claim 1, characterized in that: The gear (32) is a damping gear.

9. The retractable handle according to claim 2, characterized in that: A pole piece (24) is provided on the surface of the connecting rod (2), and the telescopic mechanism (3) further comprises a spring piece (35). The spring piece (35) is located in the housing (31), and when the first protrusion (331) is located in the slot (22), the pole piece (24) abuts against the spring piece (35).

10. The retractable handle according to claim 9, characterized in that: The surface of the connecting rod (2) is provided with a plurality of corresponding slots (22) and a plurality of pole pieces (24); when the first protrusion (331) is located in any of the slots (22), the pole piece (24) corresponding to the slot (22) abuts against the spring piece (35).

11. The retractable handle according to any one of claims 1 to 10, characterized in that: The housing (31) has a channel (314) and an installation space (315) therein; the channel (314) is in communication with the installation space (315); the connecting rod (2) is movable in the channel (314); and the gear (32) is located in the installation space (315).

12. The retractable handle according to claim 11, characterized in that: The shell (31) comprises a first body (301) and a second body (302), the first body (301) and the second body (302) are arranged opposite to each other, and the channel (314) and the installation space (315) are located between the first body (301) and the second body (302).

13. A floor scrubber, characterized in that: It comprises a body (4) and a retractable handle according to any one of claims 1 to 12, wherein the retractable mechanism (3) is located inside the body (4).

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